globals.hpp revision 8673:964fb44d9669
160484Sobrien/* 260484Sobrien * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. 360484Sobrien * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 460484Sobrien * 560484Sobrien * This code is free software; you can redistribute it and/or modify it 660484Sobrien * under the terms of the GNU General Public License version 2 only, as 760484Sobrien * published by the Free Software Foundation. 860484Sobrien * 960484Sobrien * This code is distributed in the hope that it will be useful, but WITHOUT 1060484Sobrien * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1160484Sobrien * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1260484Sobrien * version 2 for more details (a copy is included in the LICENSE file that 1360484Sobrien * accompanied this code). 1460484Sobrien * 1560484Sobrien * You should have received a copy of the GNU General Public License version 1660484Sobrien * 2 along with this work; if not, write to the Free Software Foundation, 1760484Sobrien * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1860484Sobrien * 1960484Sobrien * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2060484Sobrien * or visit www.oracle.com if you need additional information or have any 2160484Sobrien * questions. 2260484Sobrien * 2360484Sobrien */ 2460484Sobrien 2560484Sobrien#ifndef SHARE_VM_RUNTIME_GLOBALS_HPP 2660484Sobrien#define SHARE_VM_RUNTIME_GLOBALS_HPP 2760484Sobrien 2860484Sobrien#include "utilities/debug.hpp" 2960484Sobrien 3060484Sobrien// use this for flags that are true per default in the tiered build 3160484Sobrien// but false in non-tiered builds, and vice versa 3260484Sobrien#ifdef TIERED 3360484Sobrien#define trueInTiered true 3460484Sobrien#define falseInTiered false 3560484Sobrien#else 3660484Sobrien#define trueInTiered false 3760484Sobrien#define falseInTiered true 3860484Sobrien#endif 3960484Sobrien 4060484Sobrien#ifdef TARGET_ARCH_x86 4160484Sobrien# include "globals_x86.hpp" 4260484Sobrien#endif 4360484Sobrien#ifdef TARGET_ARCH_sparc 4460484Sobrien# include "globals_sparc.hpp" 4560484Sobrien#endif 4660484Sobrien#ifdef TARGET_ARCH_zero 4760484Sobrien# include "globals_zero.hpp" 4860484Sobrien#endif 4960484Sobrien#ifdef TARGET_ARCH_arm 5060484Sobrien# include "globals_arm.hpp" 5160484Sobrien#endif 5260484Sobrien#ifdef TARGET_ARCH_ppc 5360484Sobrien# include "globals_ppc.hpp" 5460484Sobrien#endif 5560484Sobrien#ifdef TARGET_ARCH_aarch64 5660484Sobrien# include "globals_aarch64.hpp" 5760484Sobrien#endif 5860484Sobrien#ifdef TARGET_OS_FAMILY_linux 5960484Sobrien# include "globals_linux.hpp" 6060484Sobrien#endif 6160484Sobrien#ifdef TARGET_OS_FAMILY_solaris 6260484Sobrien# include "globals_solaris.hpp" 6360484Sobrien#endif 6460484Sobrien#ifdef TARGET_OS_FAMILY_windows 6560484Sobrien# include "globals_windows.hpp" 6660484Sobrien#endif 6760484Sobrien#ifdef TARGET_OS_FAMILY_aix 6860484Sobrien# include "globals_aix.hpp" 6960484Sobrien#endif 7060484Sobrien#ifdef TARGET_OS_FAMILY_bsd 7160484Sobrien# include "globals_bsd.hpp" 7260484Sobrien#endif 7360484Sobrien#ifdef TARGET_OS_ARCH_linux_x86 7460484Sobrien# include "globals_linux_x86.hpp" 7560484Sobrien#endif 7660484Sobrien#ifdef TARGET_OS_ARCH_linux_sparc 7760484Sobrien# include "globals_linux_sparc.hpp" 7860484Sobrien#endif 7960484Sobrien#ifdef TARGET_OS_ARCH_linux_zero 8060484Sobrien# include "globals_linux_zero.hpp" 8160484Sobrien#endif 8260484Sobrien#ifdef TARGET_OS_ARCH_solaris_x86 8360484Sobrien# include "globals_solaris_x86.hpp" 8460484Sobrien#endif 8560484Sobrien#ifdef TARGET_OS_ARCH_solaris_sparc 8660484Sobrien# include "globals_solaris_sparc.hpp" 8760484Sobrien#endif 8860484Sobrien#ifdef TARGET_OS_ARCH_windows_x86 8960484Sobrien# include "globals_windows_x86.hpp" 9060484Sobrien#endif 9160484Sobrien#ifdef TARGET_OS_ARCH_linux_arm 9260484Sobrien# include "globals_linux_arm.hpp" 9360484Sobrien#endif 9460484Sobrien#ifdef TARGET_OS_ARCH_linux_ppc 9560484Sobrien# include "globals_linux_ppc.hpp" 9660484Sobrien#endif 9760484Sobrien#ifdef TARGET_OS_ARCH_linux_aarch64 9860484Sobrien# include "globals_linux_aarch64.hpp" 9960484Sobrien#endif 10060484Sobrien#ifdef TARGET_OS_ARCH_aix_ppc 10160484Sobrien# include "globals_aix_ppc.hpp" 10260484Sobrien#endif 10360484Sobrien#ifdef TARGET_OS_ARCH_bsd_x86 10460484Sobrien# include "globals_bsd_x86.hpp" 10560484Sobrien#endif 10660484Sobrien#ifdef TARGET_OS_ARCH_bsd_zero 10760484Sobrien# include "globals_bsd_zero.hpp" 10860484Sobrien#endif 10960484Sobrien#ifdef COMPILER1 11060484Sobrien#ifdef TARGET_ARCH_x86 11160484Sobrien# include "c1_globals_x86.hpp" 11260484Sobrien#endif 11360484Sobrien#ifdef TARGET_ARCH_sparc 11460484Sobrien# include "c1_globals_sparc.hpp" 11560484Sobrien#endif 11660484Sobrien#ifdef TARGET_ARCH_arm 11760484Sobrien# include "c1_globals_arm.hpp" 11860484Sobrien#endif 11960484Sobrien#ifdef TARGET_ARCH_aarch64 12060484Sobrien# include "c1_globals_aarch64.hpp" 12160484Sobrien#endif 12260484Sobrien#ifdef TARGET_OS_FAMILY_linux 12360484Sobrien# include "c1_globals_linux.hpp" 12460484Sobrien#endif 12560484Sobrien#ifdef TARGET_OS_FAMILY_solaris 12660484Sobrien# include "c1_globals_solaris.hpp" 12760484Sobrien#endif 12860484Sobrien#ifdef TARGET_OS_FAMILY_windows 12960484Sobrien# include "c1_globals_windows.hpp" 13060484Sobrien#endif 13160484Sobrien#ifdef TARGET_OS_FAMILY_aix 13260484Sobrien# include "c1_globals_aix.hpp" 13360484Sobrien#endif 13460484Sobrien#ifdef TARGET_OS_FAMILY_bsd 13560484Sobrien# include "c1_globals_bsd.hpp" 13660484Sobrien#endif 13760484Sobrien#ifdef TARGET_ARCH_ppc 13860484Sobrien# include "c1_globals_ppc.hpp" 13960484Sobrien#endif 14060484Sobrien#endif 14160484Sobrien#ifdef COMPILER2 14260484Sobrien#ifdef TARGET_ARCH_x86 14360484Sobrien# include "c2_globals_x86.hpp" 14460484Sobrien#endif 14560484Sobrien#ifdef TARGET_ARCH_sparc 14660484Sobrien# include "c2_globals_sparc.hpp" 14760484Sobrien#endif 14860484Sobrien#ifdef TARGET_ARCH_arm 14960484Sobrien# include "c2_globals_arm.hpp" 15060484Sobrien#endif 15160484Sobrien#ifdef TARGET_ARCH_ppc 15260484Sobrien# include "c2_globals_ppc.hpp" 15360484Sobrien#endif 15460484Sobrien#ifdef TARGET_ARCH_aarch64 15560484Sobrien# include "c2_globals_aarch64.hpp" 15660484Sobrien#endif 15760484Sobrien#ifdef TARGET_OS_FAMILY_linux 15860484Sobrien# include "c2_globals_linux.hpp" 15960484Sobrien#endif 16060484Sobrien#ifdef TARGET_OS_FAMILY_solaris 16160484Sobrien# include "c2_globals_solaris.hpp" 16260484Sobrien#endif 16360484Sobrien#ifdef TARGET_OS_FAMILY_windows 16460484Sobrien# include "c2_globals_windows.hpp" 16560484Sobrien#endif 16660484Sobrien#ifdef TARGET_OS_FAMILY_aix 16760484Sobrien# include "c2_globals_aix.hpp" 16860484Sobrien#endif 16960484Sobrien#ifdef TARGET_OS_FAMILY_bsd 17060484Sobrien# include "c2_globals_bsd.hpp" 17160484Sobrien#endif 17260484Sobrien#endif 17360484Sobrien#ifdef SHARK 17460484Sobrien#ifdef TARGET_ARCH_zero 17560484Sobrien# include "shark_globals_zero.hpp" 17660484Sobrien#endif 17760484Sobrien#endif 17860484Sobrien 17960484Sobrien#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) 18060484Sobriendefine_pd_global(bool, BackgroundCompilation, false); 18160484Sobriendefine_pd_global(bool, UseTLAB, false); 18260484Sobriendefine_pd_global(bool, CICompileOSR, false); 18360484Sobriendefine_pd_global(bool, UseTypeProfile, false); 18460484Sobriendefine_pd_global(bool, UseOnStackReplacement, false); 18560484Sobriendefine_pd_global(bool, InlineIntrinsics, false); 18660484Sobriendefine_pd_global(bool, PreferInterpreterNativeStubs, true); 18760484Sobriendefine_pd_global(bool, ProfileInterpreter, false); 18860484Sobriendefine_pd_global(bool, ProfileTraps, false); 18960484Sobriendefine_pd_global(bool, TieredCompilation, false); 19060484Sobrien 19160484Sobriendefine_pd_global(intx, CompileThreshold, 0); 19260484Sobrien 19360484Sobriendefine_pd_global(intx, OnStackReplacePercentage, 0); 19460484Sobriendefine_pd_global(bool, ResizeTLAB, false); 19560484Sobriendefine_pd_global(intx, FreqInlineSize, 0); 19660484Sobriendefine_pd_global(size_t, NewSizeThreadIncrease, 4*K); 19760484Sobriendefine_pd_global(intx, InlineClassNatives, true); 19860484Sobriendefine_pd_global(intx, InlineUnsafeOps, true); 19960484Sobriendefine_pd_global(intx, InitialCodeCacheSize, 160*K); 20060484Sobriendefine_pd_global(intx, ReservedCodeCacheSize, 32*M); 20160484Sobriendefine_pd_global(intx, NonProfiledCodeHeapSize, 0); 20260484Sobriendefine_pd_global(intx, ProfiledCodeHeapSize, 0); 20360484Sobriendefine_pd_global(intx, NonNMethodCodeHeapSize, 32*M); 20460484Sobrien 20560484Sobriendefine_pd_global(intx, CodeCacheExpansionSize, 32*K); 20660484Sobriendefine_pd_global(intx, CodeCacheMinBlockLength, 1); 20760484Sobriendefine_pd_global(intx, CodeCacheMinimumUseSpace, 200*K); 20860484Sobriendefine_pd_global(size_t, MetaspaceSize, ScaleForWordSize(4*M)); 20960484Sobriendefine_pd_global(bool, NeverActAsServerClassMachine, true); 21060484Sobriendefine_pd_global(uint64_t,MaxRAM, 1ULL*G); 21160484Sobrien#define CI_COMPILER_COUNT 0 21260484Sobrien#else 21360484Sobrien 21460484Sobrien#ifdef COMPILER2 21560484Sobrien#define CI_COMPILER_COUNT 2 21660484Sobrien#else 21760484Sobrien#define CI_COMPILER_COUNT 1 21860484Sobrien#endif // COMPILER2 21960484Sobrien 22060484Sobrien#endif // no compilers 22160484Sobrien 22260484Sobrien// string type aliases used only in this file 22360484Sobrientypedef const char* ccstr; 22460484Sobrientypedef const char* ccstrlist; // represents string arguments which accumulate 22560484Sobrien 22660484Sobrienstruct Flag { 22760484Sobrien enum Flags { 22860484Sobrien // value origin 22960484Sobrien DEFAULT = 0, 23060484Sobrien COMMAND_LINE = 1, 23160484Sobrien ENVIRON_VAR = 2, 23260484Sobrien CONFIG_FILE = 3, 23360484Sobrien MANAGEMENT = 4, 23460484Sobrien ERGONOMIC = 5, 23560484Sobrien ATTACH_ON_DEMAND = 6, 23660484Sobrien INTERNAL = 7, 23760484Sobrien 23860484Sobrien LAST_VALUE_ORIGIN = INTERNAL, 23960484Sobrien VALUE_ORIGIN_BITS = 4, 24060484Sobrien VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS), 24160484Sobrien 24260484Sobrien // flag kind 24360484Sobrien KIND_PRODUCT = 1 << 4, 24460484Sobrien KIND_MANAGEABLE = 1 << 5, 24560484Sobrien KIND_DIAGNOSTIC = 1 << 6, 24660484Sobrien KIND_EXPERIMENTAL = 1 << 7, 24760484Sobrien KIND_NOT_PRODUCT = 1 << 8, 24860484Sobrien KIND_DEVELOP = 1 << 9, 24960484Sobrien KIND_PLATFORM_DEPENDENT = 1 << 10, 25060484Sobrien KIND_READ_WRITE = 1 << 11, 25160484Sobrien KIND_C1 = 1 << 12, 25260484Sobrien KIND_C2 = 1 << 13, 25360484Sobrien KIND_ARCH = 1 << 14, 25460484Sobrien KIND_SHARK = 1 << 15, 25560484Sobrien KIND_LP64_PRODUCT = 1 << 16, 25660484Sobrien KIND_COMMERCIAL = 1 << 17, 25760484Sobrien 25860484Sobrien KIND_MASK = ~VALUE_ORIGIN_MASK 25960484Sobrien }; 26060484Sobrien 26160484Sobrien enum Error { 26260484Sobrien // no error 26360484Sobrien SUCCESS = 0, 26460484Sobrien // flag name is missing 26560484Sobrien MISSING_NAME, 26660484Sobrien // flag value is missing 26760484Sobrien MISSING_VALUE, 26860484Sobrien // error parsing the textual form of the value 26960484Sobrien WRONG_FORMAT, 27060484Sobrien // flag is not writeable 27160484Sobrien NON_WRITABLE, 27260484Sobrien // flag value is outside of its bounds 27360484Sobrien OUT_OF_BOUNDS, 27460484Sobrien // flag value violates its constraint 27560484Sobrien VIOLATES_CONSTRAINT, 27660484Sobrien // there is no flag with the given name 27760484Sobrien INVALID_FLAG, 27860484Sobrien // other, unspecified error related to setting the flag 27960484Sobrien ERR_OTHER 28060484Sobrien }; 28160484Sobrien 28260484Sobrien const char* _type; 28360484Sobrien const char* _name; 28460484Sobrien void* _addr; 28560484Sobrien NOT_PRODUCT(const char* _doc;) 28660484Sobrien Flags _flags; 28760484Sobrien 28860484Sobrien // points to all Flags static array 28960484Sobrien static Flag* flags; 29060484Sobrien 29160484Sobrien // number of flags 29260484Sobrien static size_t numFlags; 29360484Sobrien 29460484Sobrien static Flag* find_flag(const char* name) { return find_flag(name, strlen(name), true, true); }; 29560484Sobrien static Flag* find_flag(const char* name, size_t length, bool allow_locked = false, bool return_flag = false); 29660484Sobrien static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false); 29760484Sobrien 29860484Sobrien void check_writable(); 29960484Sobrien 30060484Sobrien bool is_bool() const; 30160484Sobrien bool get_bool() const; 30260484Sobrien void set_bool(bool value); 30360484Sobrien 30460484Sobrien bool is_int() const; 30560484Sobrien int get_int() const; 30660484Sobrien void set_int(int value); 30760484Sobrien 30860484Sobrien bool is_uint() const; 30960484Sobrien uint get_uint() const; 31060484Sobrien void set_uint(uint value); 31160484Sobrien 31260484Sobrien bool is_intx() const; 31360484Sobrien intx get_intx() const; 31460484Sobrien void set_intx(intx value); 31560484Sobrien 31660484Sobrien bool is_uintx() const; 31760484Sobrien uintx get_uintx() const; 31860484Sobrien void set_uintx(uintx value); 31960484Sobrien 32060484Sobrien bool is_uint64_t() const; 32160484Sobrien uint64_t get_uint64_t() const; 32260484Sobrien void set_uint64_t(uint64_t value); 32360484Sobrien 32460484Sobrien bool is_size_t() const; 32560484Sobrien size_t get_size_t() const; 32660484Sobrien void set_size_t(size_t value); 32760484Sobrien 32860484Sobrien bool is_double() const; 32960484Sobrien double get_double() const; 33060484Sobrien void set_double(double value); 33160484Sobrien 33260484Sobrien bool is_ccstr() const; 33360484Sobrien bool ccstr_accumulates() const; 33460484Sobrien ccstr get_ccstr() const; 33560484Sobrien void set_ccstr(ccstr value); 33660484Sobrien 33760484Sobrien Flags get_origin(); 33860484Sobrien void set_origin(Flags origin); 33960484Sobrien 34060484Sobrien bool is_default(); 34160484Sobrien bool is_ergonomic(); 34260484Sobrien bool is_command_line(); 34360484Sobrien 34460484Sobrien bool is_product() const; 34560484Sobrien bool is_manageable() const; 34660484Sobrien bool is_diagnostic() const; 34760484Sobrien bool is_experimental() const; 34860484Sobrien bool is_notproduct() const; 34960484Sobrien bool is_develop() const; 35060484Sobrien bool is_read_write() const; 35160484Sobrien bool is_commercial() const; 35260484Sobrien 35360484Sobrien bool is_constant_in_binary() const; 35460484Sobrien 35560484Sobrien bool is_unlocker() const; 35660484Sobrien bool is_unlocked() const; 35760484Sobrien bool is_writeable() const; 35860484Sobrien bool is_external() const; 35960484Sobrien 36060484Sobrien bool is_unlocker_ext() const; 36160484Sobrien bool is_unlocked_ext() const; 36260484Sobrien bool is_writeable_ext() const; 36360484Sobrien bool is_external_ext() const; 36460484Sobrien 36560484Sobrien void unlock_diagnostic(); 36660484Sobrien 36760484Sobrien void get_locked_message(char*, int) const; 36860484Sobrien void get_locked_message_ext(char*, int) const; 36960484Sobrien 37060484Sobrien // printRanges will print out flags type, name and range values as expected by -XX:+PrintFlagsRanges 37160484Sobrien void print_on(outputStream* st, bool withComments = false, bool printRanges = false); 37260484Sobrien void print_kind(outputStream* st); 37360484Sobrien void print_as_flag(outputStream* st); 37460484Sobrien 37560484Sobrien static const char* flag_error_str(Flag::Error error) { 37660484Sobrien switch (error) { 37760484Sobrien case Flag::MISSING_NAME: return "MISSING_NAME"; 37860484Sobrien case Flag::MISSING_VALUE: return "MISSING_VALUE"; 37960484Sobrien case Flag::NON_WRITABLE: return "NON_WRITABLE"; 38060484Sobrien case Flag::OUT_OF_BOUNDS: return "OUT_OF_BOUNDS"; 38160484Sobrien case Flag::VIOLATES_CONSTRAINT: return "VIOLATES_CONSTRAINT"; 38260484Sobrien case Flag::INVALID_FLAG: return "INVALID_FLAG"; 38360484Sobrien case Flag::ERR_OTHER: return "ERR_OTHER"; 38460484Sobrien case Flag::SUCCESS: return "SUCCESS"; 38560484Sobrien default: return "NULL"; 38660484Sobrien } 38760484Sobrien } 38860484Sobrien}; 38960484Sobrien 39060484Sobrien// debug flags control various aspects of the VM and are global accessible 39160484Sobrien 39260484Sobrien// use FlagSetting to temporarily change some debug flag 39360484Sobrien// e.g. FlagSetting fs(DebugThisAndThat, true); 39460484Sobrien// restored to previous value upon leaving scope 39560484Sobrienclass FlagSetting { 39660484Sobrien bool val; 39760484Sobrien bool* flag; 39860484Sobrien public: 39960484Sobrien FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 40060484Sobrien ~FlagSetting() { *flag = val; } 40160484Sobrien}; 40260484Sobrien 40360484Sobrien 40460484Sobrienclass CounterSetting { 40560484Sobrien intx* counter; 40660484Sobrien public: 40760484Sobrien CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 40860484Sobrien ~CounterSetting() { (*counter)--; } 40960484Sobrien}; 41060484Sobrien 41189857Sobrienclass IntFlagSetting { 41260484Sobrien int val; 41360484Sobrien int* flag; 41460484Sobrien public: 41560484Sobrien IntFlagSetting(int& fl, int newValue) { flag = &fl; val = fl; fl = newValue; } 41660484Sobrien ~IntFlagSetting() { *flag = val; } 41760484Sobrien}; 41860484Sobrien 41960484Sobrienclass UIntFlagSetting { 42060484Sobrien uint val; 42160484Sobrien uint* flag; 42260484Sobrien public: 42360484Sobrien UIntFlagSetting(uint& fl, uint newValue) { flag = &fl; val = fl; fl = newValue; } 42460484Sobrien ~UIntFlagSetting() { *flag = val; } 42560484Sobrien}; 42660484Sobrien 42760484Sobrienclass UIntXFlagSetting { 42860484Sobrien uintx val; 42960484Sobrien uintx* flag; 43060484Sobrien public: 43160484Sobrien UIntXFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; } 43260484Sobrien ~UIntXFlagSetting() { *flag = val; } 43360484Sobrien}; 43460484Sobrien 43560484Sobrienclass DoubleFlagSetting { 43660484Sobrien double val; 43760484Sobrien double* flag; 43860484Sobrien public: 43960484Sobrien DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 44060484Sobrien ~DoubleFlagSetting() { *flag = val; } 44160484Sobrien}; 44260484Sobrien 44360484Sobrienclass SizeTFlagSetting { 44460484Sobrien size_t val; 44560484Sobrien size_t* flag; 44660484Sobrien public: 44760484Sobrien SizeTFlagSetting(size_t& fl, size_t newValue) { flag = &fl; val = fl; fl = newValue; } 44860484Sobrien ~SizeTFlagSetting() { *flag = val; } 44960484Sobrien}; 45060484Sobrien 45160484Sobrien 45260484Sobrienclass CommandLineFlags { 45360484Sobrien static bool _finished_initializing; 45460484Sobrienpublic: 45560484Sobrien static Flag::Error boolAt(const char* name, size_t len, bool* value, bool allow_locked = false, bool return_flag = false); 45660484Sobrien static Flag::Error boolAt(const char* name, bool* value, bool allow_locked = false, bool return_flag = false) { return boolAt(name, strlen(name), value, allow_locked, return_flag); } 45760484Sobrien static Flag::Error boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin); 45860484Sobrien static Flag::Error boolAtPut(const char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); } 45960484Sobrien 46060484Sobrien static Flag::Error intAt(const char* name, size_t len, int* value, bool allow_locked = false, bool return_flag = false); 46189857Sobrien static Flag::Error intAt(const char* name, int* value, bool allow_locked = false, bool return_flag = false) { return intAt(name, strlen(name), value, allow_locked, return_flag); } 46289857Sobrien static Flag::Error intAtPut(const char* name, size_t len, int* value, Flag::Flags origin); 46389857Sobrien static Flag::Error intAtPut(const char* name, int* value, Flag::Flags origin) { return intAtPut(name, strlen(name), value, origin); } 46460484Sobrien 46589857Sobrien static Flag::Error uintAt(const char* name, size_t len, uint* value, bool allow_locked = false, bool return_flag = false); 46660484Sobrien static Flag::Error uintAt(const char* name, uint* value, bool allow_locked = false, bool return_flag = false) { return uintAt(name, strlen(name), value, allow_locked, return_flag); } 46760484Sobrien static Flag::Error uintAtPut(const char* name, size_t len, uint* value, Flag::Flags origin); 46860484Sobrien static Flag::Error uintAtPut(const char* name, uint* value, Flag::Flags origin) { return uintAtPut(name, strlen(name), value, origin); } 46960484Sobrien 47060484Sobrien static Flag::Error intxAt(const char* name, size_t len, intx* value, bool allow_locked = false, bool return_flag = false); 47160484Sobrien static Flag::Error intxAt(const char* name, intx* value, bool allow_locked = false, bool return_flag = false) { return intxAt(name, strlen(name), value, allow_locked, return_flag); } 47260484Sobrien static Flag::Error intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin); 47360484Sobrien static Flag::Error intxAtPut(const char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); } 47460484Sobrien 47560484Sobrien static Flag::Error uintxAt(const char* name, size_t len, uintx* value, bool allow_locked = false, bool return_flag = false); 47660484Sobrien static Flag::Error uintxAt(const char* name, uintx* value, bool allow_locked = false, bool return_flag = false) { return uintxAt(name, strlen(name), value, allow_locked, return_flag); } 47760484Sobrien static Flag::Error uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin); 47860484Sobrien static Flag::Error uintxAtPut(const char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); } 47960484Sobrien 48060484Sobrien static Flag::Error size_tAt(const char* name, size_t len, size_t* value, bool allow_locked = false, bool return_flag = false); 48160484Sobrien static Flag::Error size_tAt(const char* name, size_t* value, bool allow_locked = false, bool return_flag = false) { return size_tAt(name, strlen(name), value, allow_locked, return_flag); } 48260484Sobrien static Flag::Error size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin); 48360484Sobrien static Flag::Error size_tAtPut(const char* name, size_t* value, Flag::Flags origin) { return size_tAtPut(name, strlen(name), value, origin); } 48460484Sobrien 48560484Sobrien static Flag::Error uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked = false, bool return_flag = false); 48660484Sobrien static Flag::Error uint64_tAt(const char* name, uint64_t* value, bool allow_locked = false, bool return_flag = false) { return uint64_tAt(name, strlen(name), value, allow_locked, return_flag); } 48760484Sobrien static Flag::Error uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin); 48860484Sobrien static Flag::Error uint64_tAtPut(const char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 48960484Sobrien 49060484Sobrien static Flag::Error doubleAt(const char* name, size_t len, double* value, bool allow_locked = false, bool return_flag = false); 49160484Sobrien static Flag::Error doubleAt(const char* name, double* value, bool allow_locked = false, bool return_flag = false) { return doubleAt(name, strlen(name), value, allow_locked, return_flag); } 49260484Sobrien static Flag::Error doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin); 49360484Sobrien static Flag::Error doubleAtPut(const char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); } 49460484Sobrien 49560484Sobrien static Flag::Error ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked = false, bool return_flag = false); 49660484Sobrien static Flag::Error ccstrAt(const char* name, ccstr* value, bool allow_locked = false, bool return_flag = false) { return ccstrAt(name, strlen(name), value, allow_locked, return_flag); } 49760484Sobrien // Contract: Flag will make private copy of the incoming value. 49860484Sobrien // Outgoing value is always malloc-ed, and caller MUST call free. 49960484Sobrien static Flag::Error ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin); 50060484Sobrien static Flag::Error ccstrAtPut(const char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); } 50160484Sobrien 50260484Sobrien // Returns false if name is not a command line flag. 50360484Sobrien static bool wasSetOnCmdline(const char* name, bool* value); 50460484Sobrien static void printSetFlags(outputStream* out); 50560484Sobrien 50660484Sobrien // printRanges will print out flags type, name and range values as expected by -XX:+PrintFlagsRanges 50760484Sobrien static void printFlags(outputStream* out, bool withComments, bool printRanges = false); 50860484Sobrien 50960484Sobrien // Returns true if all flags have their final values set (ready for ranges and constraint check) 51060484Sobrien static bool finishedInitializing() { return _finished_initializing; } 51160484Sobrien 51260484Sobrien // Check the final values of all flags for ranges and constraints 51360484Sobrien static bool check_all_ranges_and_constraints(); 51460484Sobrien 51560484Sobrien static void verify() PRODUCT_RETURN; 51660484Sobrien}; 51760484Sobrien 51860484Sobrien// use this for flags that are true by default in the debug version but 51960484Sobrien// false in the optimized version, and vice versa 52060484Sobrien#ifdef ASSERT 52160484Sobrien#define trueInDebug true 52260484Sobrien#define falseInDebug false 52360484Sobrien#else 52460484Sobrien#define trueInDebug false 52560484Sobrien#define falseInDebug true 52660484Sobrien#endif 52760484Sobrien 52860484Sobrien// use this for flags that are true per default in the product build 52960484Sobrien// but false in development builds, and vice versa 53060484Sobrien#ifdef PRODUCT 53160484Sobrien#define trueInProduct true 53260484Sobrien#define falseInProduct false 53360484Sobrien#else 53460484Sobrien#define trueInProduct false 53560484Sobrien#define falseInProduct true 53660484Sobrien#endif 53760484Sobrien 53860484Sobrien#ifdef JAVASE_EMBEDDED 53960484Sobrien#define falseInEmbedded false 54060484Sobrien#else 54160484Sobrien#define falseInEmbedded true 54260484Sobrien#endif 54360484Sobrien 54460484Sobrien// develop flags are settable / visible only during development and are constant in the PRODUCT version 54560484Sobrien// product flags are always settable / visible 54660484Sobrien// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 54760484Sobrien 54860484Sobrien// A flag must be declared with one of the following types: 54960484Sobrien// bool, intx, uintx, size_t, ccstr, double, or uint64_t. 55060484Sobrien// The type "ccstr" is an alias for "const char*" and is used 55160484Sobrien// only in this file, because the macrology requires single-token type names. 55260484Sobrien 55360484Sobrien// Note: Diagnostic options not meant for VM tuning or for product modes. 55460484Sobrien// They are to be used for VM quality assurance or field diagnosis 55560484Sobrien// of VM bugs. They are hidden so that users will not be encouraged to 55660484Sobrien// try them as if they were VM ordinary execution options. However, they 55760484Sobrien// are available in the product version of the VM. Under instruction 55860484Sobrien// from support engineers, VM customers can turn them on to collect 55960484Sobrien// diagnostic information about VM problems. To use a VM diagnostic 56060484Sobrien// option, you must first specify +UnlockDiagnosticVMOptions. 56160484Sobrien// (This master switch also affects the behavior of -Xprintflags.) 56260484Sobrien// 56360484Sobrien// experimental flags are in support of features that are not 56460484Sobrien// part of the officially supported product, but are available 56560484Sobrien// for experimenting with. They could, for example, be performance 56660484Sobrien// features that may not have undergone full or rigorous QA, but which may 56760484Sobrien// help performance in some cases and released for experimentation 56860484Sobrien// by the community of users and developers. This flag also allows one to 56960484Sobrien// be able to build a fully supported product that nonetheless also 57060484Sobrien// ships with some unsupported, lightly tested, experimental features. 57160484Sobrien// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 57260484Sobrien// UnlockExperimentalVMOptions flag, which allows the control and 57360484Sobrien// modification of the experimental flags. 57460484Sobrien// 57560484Sobrien// Nota bene: neither diagnostic nor experimental options should be used casually, 57660484Sobrien// and they are not supported on production loads, except under explicit 57760484Sobrien// direction from support engineers. 57860484Sobrien// 57960484Sobrien// manageable flags are writeable external product flags. 58060484Sobrien// They are dynamically writeable through the JDK management interface 58160484Sobrien// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 58260484Sobrien// These flags are external exported interface (see CCC). The list of 58360484Sobrien// manageable flags can be queried programmatically through the management 58460484Sobrien// interface. 58560484Sobrien// 58660484Sobrien// A flag can be made as "manageable" only if 58760484Sobrien// - the flag is defined in a CCC as an external exported interface. 58860484Sobrien// - the VM implementation supports dynamic setting of the flag. 58960484Sobrien// This implies that the VM must *always* query the flag variable 59060484Sobrien// and not reuse state related to the flag state at any given time. 59160484Sobrien// - you want the flag to be queried programmatically by the customers. 59260484Sobrien// 59360484Sobrien// product_rw flags are writeable internal product flags. 59460484Sobrien// They are like "manageable" flags but for internal/private use. 59560484Sobrien// The list of product_rw flags are internal/private flags which 59660484Sobrien// may be changed/removed in a future release. It can be set 59760484Sobrien// through the management interface to get/set value 59860484Sobrien// when the name of flag is supplied. 59960484Sobrien// 60060484Sobrien// A flag can be made as "product_rw" only if 60160484Sobrien// - the VM implementation supports dynamic setting of the flag. 60260484Sobrien// This implies that the VM must *always* query the flag variable 60360484Sobrien// and not reuse state related to the flag state at any given time. 60460484Sobrien// 60560484Sobrien// Note that when there is a need to support develop flags to be writeable, 60660484Sobrien// it can be done in the same way as product_rw. 60760484Sobrien// 60860484Sobrien// range is a macro that will expand to min and max arguments for range 60960484Sobrien// checking code if provided - see commandLineFlagRangeList.hpp 61060484Sobrien// 61160484Sobrien// constraint is a macro that will expand to custom function call 61260484Sobrien// for constraint checking if provided - see commandLineFlagConstraintList.hpp 61360484Sobrien// 61460484Sobrien 61560484Sobrien#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product, range, constraint) \ 61660484Sobrien \ 61760484Sobrien lp64_product(bool, UseCompressedOops, false, \ 61860484Sobrien "Use 32-bit object references in 64-bit VM. " \ 61960484Sobrien "lp64_product means flag is always constant in 32 bit VM") \ 62060484Sobrien \ 62160484Sobrien lp64_product(bool, UseCompressedClassPointers, false, \ 62260484Sobrien "Use 32-bit class pointers in 64-bit VM. " \ 62360484Sobrien "lp64_product means flag is always constant in 32 bit VM") \ 62460484Sobrien \ 62560484Sobrien notproduct(bool, CheckCompressedOops, true, \ 62660484Sobrien "Generate checks in encoding/decoding code in debug VM") \ 62760484Sobrien \ 62860484Sobrien product_pd(size_t, HeapBaseMinAddress, \ 62960484Sobrien "OS specific low limit for heap base address") \ 63060484Sobrien \ 63160484Sobrien product(uintx, HeapSearchSteps, 3 PPC64_ONLY(+17), \ 63260484Sobrien "Heap allocation steps through preferred address regions to find" \ 63360484Sobrien " where it can allocate the heap. Number of steps to take per " \ 63460484Sobrien "region.") \ 63560484Sobrien range(1, max_uintx) \ 63660484Sobrien \ 63760484Sobrien diagnostic(bool, PrintCompressedOopsMode, false, \ 63860484Sobrien "Print compressed oops base address and encoding mode") \ 63960484Sobrien \ 64060484Sobrien lp64_product(intx, ObjectAlignmentInBytes, 8, \ 64160484Sobrien "Default object alignment in bytes, 8 is minimum") \ 64260484Sobrien range(8, 256) \ 64360484Sobrien constraint(ObjectAlignmentInBytesConstraintFunc) \ 64460484Sobrien \ 64560484Sobrien product(bool, AssumeMP, false, \ 64660484Sobrien "Instruct the VM to assume multiple processors are available") \ 64760484Sobrien \ 64860484Sobrien /* UseMembar is theoretically a temp flag used for memory barrier */ \ 64960484Sobrien /* removal testing. It was supposed to be removed before FCS but has */ \ 65060484Sobrien /* been re-added (see 6401008) */ \ 65160484Sobrien product_pd(bool, UseMembar, \ 65260484Sobrien "(Unstable) Issues membars on thread state transitions") \ 65360484Sobrien \ 65460484Sobrien develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ 65560484Sobrien "Clean the chunk pool asynchronously") \ 65660484Sobrien \ 65760484Sobrien experimental(bool, AlwaysSafeConstructors, false, \ 65860484Sobrien "Force safe construction, as if all fields are final.") \ 65960484Sobrien \ 66060484Sobrien /* Temporary: See 6948537 */ \ 66160484Sobrien experimental(bool, UseMemSetInBOT, true, \ 66260484Sobrien "(Unstable) uses memset in BOT updates in GC code") \ 66360484Sobrien \ 66460484Sobrien diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 66560484Sobrien "Enable normal processing of flags relating to field diagnostics")\ 66660484Sobrien \ 66760484Sobrien experimental(bool, UnlockExperimentalVMOptions, false, \ 66860484Sobrien "Enable normal processing of flags relating to experimental " \ 66960484Sobrien "features") \ 67060484Sobrien \ 67160484Sobrien product(bool, JavaMonitorsInStackTrace, true, \ 67260484Sobrien "Print information about Java monitor locks when the stacks are" \ 67360484Sobrien "dumped") \ 67460484Sobrien \ 67560484Sobrien product_pd(bool, UseLargePages, \ 67660484Sobrien "Use large page memory") \ 67760484Sobrien \ 67860484Sobrien product_pd(bool, UseLargePagesIndividualAllocation, \ 67960484Sobrien "Allocate large pages individually for better affinity") \ 68060484Sobrien \ 68160484Sobrien develop(bool, LargePagesIndividualAllocationInjectError, false, \ 68260484Sobrien "Fail large pages individual allocation") \ 68360484Sobrien \ 68460484Sobrien product(bool, UseLargePagesInMetaspace, false, \ 68560484Sobrien "Use large page memory in metaspace. " \ 68660484Sobrien "Only used if UseLargePages is enabled.") \ 68760484Sobrien \ 68860484Sobrien develop(bool, TracePageSizes, false, \ 68960484Sobrien "Trace page size selection and usage") \ 69060484Sobrien \ 69160484Sobrien product(bool, UseNUMA, false, \ 69260484Sobrien "Use NUMA if available") \ 69360484Sobrien \ 69460484Sobrien product(bool, UseNUMAInterleaving, false, \ 69560484Sobrien "Interleave memory across NUMA nodes if available") \ 69660484Sobrien \ 69760484Sobrien product(size_t, NUMAInterleaveGranularity, 2*M, \ 69860484Sobrien "Granularity to use for NUMA interleaving on Windows OS") \ 69960484Sobrien \ 70060484Sobrien product(bool, ForceNUMA, false, \ 70160484Sobrien "Force NUMA optimizations on single-node/UMA systems") \ 70260484Sobrien \ 70360484Sobrien product(uintx, NUMAChunkResizeWeight, 20, \ 70460484Sobrien "Percentage (0-100) used to weight the current sample when " \ 70560484Sobrien "computing exponentially decaying average for " \ 70660484Sobrien "AdaptiveNUMAChunkSizing") \ 70760484Sobrien range(0, 100) \ 70860484Sobrien \ 70960484Sobrien product(size_t, NUMASpaceResizeRate, 1*G, \ 71060484Sobrien "Do not reallocate more than this amount per collection") \ 71160484Sobrien \ 71260484Sobrien product(bool, UseAdaptiveNUMAChunkSizing, true, \ 71360484Sobrien "Enable adaptive chunk sizing for NUMA") \ 71460484Sobrien \ 71560484Sobrien product(bool, NUMAStats, false, \ 71660484Sobrien "Print NUMA stats in detailed heap information") \ 71760484Sobrien \ 71860484Sobrien product(uintx, NUMAPageScanRate, 256, \ 71960484Sobrien "Maximum number of pages to include in the page scan procedure") \ 72060484Sobrien \ 72160484Sobrien product_pd(bool, NeedsDeoptSuspend, \ 72260484Sobrien "True for register window machines (sparc/ia64)") \ 72360484Sobrien \ 72460484Sobrien product(intx, UseSSE, 99, \ 72560484Sobrien "Highest supported SSE instructions set on x86/x64") \ 72660484Sobrien \ 72760484Sobrien product(bool, UseAES, false, \ 72860484Sobrien "Control whether AES instructions can be used on x86/x64") \ 72960484Sobrien \ 73060484Sobrien product(bool, UseSHA, false, \ 73160484Sobrien "Control whether SHA instructions can be used on SPARC") \ 73260484Sobrien \ 73360484Sobrien product(bool, UseGHASHIntrinsics, false, \ 73460484Sobrien "Use intrinsics for GHASH versions of crypto") \ 73560484Sobrien \ 73660484Sobrien product(size_t, LargePageSizeInBytes, 0, \ 73760484Sobrien "Large page size (0 to let VM choose the page size)") \ 73860484Sobrien \ 73960484Sobrien product(size_t, LargePageHeapSizeThreshold, 128*M, \ 74060484Sobrien "Use large pages if maximum heap is at least this big") \ 74160484Sobrien \ 74260484Sobrien product(bool, ForceTimeHighResolution, false, \ 74360484Sobrien "Using high time resolution (for Win32 only)") \ 74460484Sobrien \ 74560484Sobrien develop(bool, TraceItables, false, \ 74660484Sobrien "Trace initialization and use of itables") \ 74760484Sobrien \ 74860484Sobrien develop(bool, TracePcPatching, false, \ 74960484Sobrien "Trace usage of frame::patch_pc") \ 75060484Sobrien \ 75160484Sobrien develop(bool, TraceJumps, false, \ 75260484Sobrien "Trace assembly jumps in thread ring buffer") \ 75360484Sobrien \ 75460484Sobrien develop(bool, TraceRelocator, false, \ 75560484Sobrien "Trace the bytecode relocator") \ 75660484Sobrien \ 75760484Sobrien develop(bool, TraceLongCompiles, false, \ 75860484Sobrien "Print out every time compilation is longer than " \ 75960484Sobrien "a given threshold") \ 76060484Sobrien \ 76160484Sobrien develop(bool, SafepointALot, false, \ 76260484Sobrien "Generate a lot of safepoints. This works with " \ 76360484Sobrien "GuaranteedSafepointInterval") \ 76460484Sobrien \ 76560484Sobrien product_pd(bool, BackgroundCompilation, \ 76660484Sobrien "A thread requesting compilation is not blocked during " \ 76760484Sobrien "compilation") \ 76860484Sobrien \ 76960484Sobrien product(bool, PrintVMQWaitTime, false, \ 77060484Sobrien "Print out the waiting time in VM operation queue") \ 77160484Sobrien \ 77260484Sobrien develop(bool, TraceOopMapGeneration, false, \ 77360484Sobrien "Show OopMapGeneration") \ 77460484Sobrien \ 77560484Sobrien product(bool, MethodFlushing, true, \ 77660484Sobrien "Reclamation of zombie and not-entrant methods") \ 77760484Sobrien \ 77860484Sobrien develop(bool, VerifyStack, false, \ 77960484Sobrien "Verify stack of each thread when it is entering a runtime call") \ 78060484Sobrien \ 78160484Sobrien diagnostic(bool, ForceUnreachable, false, \ 78260484Sobrien "Make all non code cache addresses to be unreachable by " \ 78360484Sobrien "forcing use of 64bit literal fixups") \ 78460484Sobrien \ 78560484Sobrien notproduct(bool, StressDerivedPointers, false, \ 78660484Sobrien "Force scavenge when a derived pointer is detected on stack " \ 78760484Sobrien "after rtm call") \ 78860484Sobrien \ 78960484Sobrien develop(bool, TraceDerivedPointers, false, \ 79060484Sobrien "Trace traversal of derived pointers on stack") \ 79160484Sobrien \ 79260484Sobrien notproduct(bool, TraceCodeBlobStacks, false, \ 79360484Sobrien "Trace stack-walk of codeblobs") \ 79460484Sobrien \ 79560484Sobrien product(bool, PrintJNIResolving, false, \ 79660484Sobrien "Used to implement -v:jni") \ 79760484Sobrien \ 79860484Sobrien notproduct(bool, PrintRewrites, false, \ 79960484Sobrien "Print methods that are being rewritten") \ 80060484Sobrien \ 80160484Sobrien product(bool, UseInlineCaches, true, \ 80260484Sobrien "Use Inline Caches for virtual calls ") \ 80360484Sobrien \ 80460484Sobrien develop(bool, InlineArrayCopy, true, \ 80560484Sobrien "Inline arraycopy native that is known to be part of " \ 80660484Sobrien "base library DLL") \ 80760484Sobrien \ 80860484Sobrien develop(bool, InlineObjectHash, true, \ 80960484Sobrien "Inline Object::hashCode() native that is known to be part " \ 81060484Sobrien "of base library DLL") \ 81160484Sobrien \ 81260484Sobrien develop(bool, InlineNatives, true, \ 81360484Sobrien "Inline natives that are known to be part of base library DLL") \ 81460484Sobrien \ 81560484Sobrien develop(bool, InlineMathNatives, true, \ 81660484Sobrien "Inline SinD, CosD, etc.") \ 81760484Sobrien \ 81860484Sobrien develop(bool, InlineClassNatives, true, \ 81960484Sobrien "Inline Class.isInstance, etc") \ 82060484Sobrien \ 82160484Sobrien develop(bool, InlineThreadNatives, true, \ 82260484Sobrien "Inline Thread.currentThread, etc") \ 82360484Sobrien \ 82460484Sobrien develop(bool, InlineUnsafeOps, true, \ 82560484Sobrien "Inline memory ops (native methods) from sun.misc.Unsafe") \ 82660484Sobrien \ 82760484Sobrien product(bool, CriticalJNINatives, true, \ 82860484Sobrien "Check for critical JNI entry points") \ 82960484Sobrien \ 83060484Sobrien notproduct(bool, StressCriticalJNINatives, false, \ 83160484Sobrien "Exercise register saving code in critical natives") \ 83260484Sobrien \ 83360484Sobrien product(bool, UseSSE42Intrinsics, false, \ 83460484Sobrien "SSE4.2 versions of intrinsics") \ 83560484Sobrien \ 83660484Sobrien product(bool, UseAESIntrinsics, false, \ 83760484Sobrien "Use intrinsics for AES versions of crypto") \ 83860484Sobrien \ 83960484Sobrien product(bool, UseSHA1Intrinsics, false, \ 84060484Sobrien "Use intrinsics for SHA-1 crypto hash function") \ 84160484Sobrien \ 84260484Sobrien product(bool, UseSHA256Intrinsics, false, \ 84360484Sobrien "Use intrinsics for SHA-224 and SHA-256 crypto hash functions") \ 84460484Sobrien \ 84560484Sobrien product(bool, UseSHA512Intrinsics, false, \ 84660484Sobrien "Use intrinsics for SHA-384 and SHA-512 crypto hash functions") \ 84760484Sobrien \ 84860484Sobrien product(bool, UseCRC32Intrinsics, false, \ 84960484Sobrien "use intrinsics for java.util.zip.CRC32") \ 85060484Sobrien \ 85160484Sobrien product(bool, UseCRC32CIntrinsics, false, \ 85260484Sobrien "use intrinsics for java.util.zip.CRC32C") \ 85360484Sobrien \ 85460484Sobrien develop(bool, TraceCallFixup, false, \ 85560484Sobrien "Trace all call fixups") \ 85660484Sobrien \ 85760484Sobrien develop(bool, DeoptimizeALot, false, \ 85860484Sobrien "Deoptimize at every exit from the runtime system") \ 85960484Sobrien \ 86060484Sobrien notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 86160484Sobrien "A comma separated list of bcis to deoptimize at") \ 86260484Sobrien \ 86360484Sobrien product(bool, DeoptimizeRandom, false, \ 86460484Sobrien "Deoptimize random frames on random exit from the runtime system")\ 86560484Sobrien \ 86660484Sobrien notproduct(bool, ZombieALot, false, \ 86760484Sobrien "Create zombies (non-entrant) at exit from the runtime system") \ 86860484Sobrien \ 86960484Sobrien product(bool, UnlinkSymbolsALot, false, \ 87060484Sobrien "Unlink unreferenced symbols from the symbol table at safepoints")\ 87160484Sobrien \ 87260484Sobrien notproduct(bool, WalkStackALot, false, \ 87360484Sobrien "Trace stack (no print) at every exit from the runtime system") \ 87460484Sobrien \ 87560484Sobrien product(bool, Debugging, false, \ 87660484Sobrien "Set when executing debug methods in debug.cpp " \ 87760484Sobrien "(to prevent triggering assertions)") \ 87860484Sobrien \ 87960484Sobrien notproduct(bool, StrictSafepointChecks, trueInDebug, \ 88060484Sobrien "Enable strict checks that safepoints cannot happen for threads " \ 88160484Sobrien "that use No_Safepoint_Verifier") \ 88260484Sobrien \ 88360484Sobrien notproduct(bool, VerifyLastFrame, false, \ 88460484Sobrien "Verify oops on last frame on entry to VM") \ 88560484Sobrien \ 88660484Sobrien develop(bool, TraceHandleAllocation, false, \ 88760484Sobrien "Print out warnings when suspiciously many handles are allocated")\ 88860484Sobrien \ 88960484Sobrien product(bool, FailOverToOldVerifier, true, \ 89060484Sobrien "Fail over to old verifier when split verifier fails") \ 89160484Sobrien \ 89260484Sobrien develop(bool, ShowSafepointMsgs, false, \ 89360484Sobrien "Show message about safepoint synchronization") \ 89460484Sobrien \ 89560484Sobrien product(bool, SafepointTimeout, false, \ 89660484Sobrien "Time out and warn or fail after SafepointTimeoutDelay " \ 89760484Sobrien "milliseconds if failed to reach safepoint") \ 89860484Sobrien \ 89960484Sobrien develop(bool, DieOnSafepointTimeout, false, \ 90060484Sobrien "Die upon failure to reach safepoint (see SafepointTimeout)") \ 90160484Sobrien \ 90260484Sobrien /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 90360484Sobrien /* typically, at most a few retries are needed */ \ 90460484Sobrien product(intx, SuspendRetryCount, 50, \ 90560484Sobrien "Maximum retry count for an external suspend request") \ 90660484Sobrien \ 90760484Sobrien product(intx, SuspendRetryDelay, 5, \ 90860484Sobrien "Milliseconds to delay per retry (* current_retry_count)") \ 90960484Sobrien \ 91060484Sobrien product(bool, AssertOnSuspendWaitFailure, false, \ 91160484Sobrien "Assert/Guarantee on external suspend wait failure") \ 91260484Sobrien \ 91360484Sobrien product(bool, TraceSuspendWaitFailures, false, \ 91460484Sobrien "Trace external suspend wait failures") \ 91560484Sobrien \ 91660484Sobrien product(bool, MaxFDLimit, true, \ 91760484Sobrien "Bump the number of file descriptors to maximum in Solaris") \ 91860484Sobrien \ 91960484Sobrien diagnostic(bool, LogEvents, true, \ 92060484Sobrien "Enable the various ring buffer event logs") \ 92160484Sobrien \ 92260484Sobrien diagnostic(uintx, LogEventsBufferEntries, 10, \ 92360484Sobrien "Number of ring buffer event logs") \ 92460484Sobrien range(1, NOT_LP64(1*K) LP64_ONLY(1*M)) \ 92560484Sobrien \ 92660484Sobrien product(bool, BytecodeVerificationRemote, true, \ 92760484Sobrien "Enable the Java bytecode verifier for remote classes") \ 92860484Sobrien \ 92960484Sobrien product(bool, BytecodeVerificationLocal, false, \ 93060484Sobrien "Enable the Java bytecode verifier for local classes") \ 93160484Sobrien \ 93260484Sobrien develop(bool, ForceFloatExceptions, trueInDebug, \ 93360484Sobrien "Force exceptions on FP stack under/overflow") \ 93460484Sobrien \ 93560484Sobrien develop(bool, VerifyStackAtCalls, false, \ 93660484Sobrien "Verify that the stack pointer is unchanged after calls") \ 93760484Sobrien \ 93860484Sobrien develop(bool, TraceJavaAssertions, false, \ 93960484Sobrien "Trace java language assertions") \ 94060484Sobrien \ 94160484Sobrien notproduct(bool, CheckAssertionStatusDirectives, false, \ 94260484Sobrien "Temporary - see javaClasses.cpp") \ 94360484Sobrien \ 94460484Sobrien notproduct(bool, PrintMallocFree, false, \ 94560484Sobrien "Trace calls to C heap malloc/free allocation") \ 94660484Sobrien \ 94760484Sobrien product(bool, PrintOopAddress, false, \ 94860484Sobrien "Always print the location of the oop") \ 94960484Sobrien \ 95060484Sobrien notproduct(bool, VerifyCodeCache, false, \ 95160484Sobrien "Verify code cache on memory allocation/deallocation") \ 95260484Sobrien \ 95360484Sobrien develop(bool, ZapDeadCompiledLocals, false, \ 95460484Sobrien "Zap dead locals in compiler frames") \ 95560484Sobrien \ 95660484Sobrien notproduct(bool, ZapDeadLocalsOld, false, \ 95760484Sobrien "Zap dead locals (old version, zaps all frames when " \ 95860484Sobrien "entering the VM") \ 95960484Sobrien \ 96060484Sobrien notproduct(bool, CheckOopishValues, false, \ 96160484Sobrien "Warn if value contains oop (requires ZapDeadLocals)") \ 96260484Sobrien \ 96360484Sobrien develop(bool, UseMallocOnly, false, \ 96460484Sobrien "Use only malloc/free for allocation (no resource area/arena)") \ 96560484Sobrien \ 96660484Sobrien develop(bool, PrintMalloc, false, \ 96760484Sobrien "Print all malloc/free calls") \ 96860484Sobrien \ 96960484Sobrien develop(bool, PrintMallocStatistics, false, \ 97060484Sobrien "Print malloc/free statistics") \ 97160484Sobrien \ 97260484Sobrien develop(bool, ZapResourceArea, trueInDebug, \ 97360484Sobrien "Zap freed resource/arena space with 0xABABABAB") \ 97460484Sobrien \ 97560484Sobrien notproduct(bool, ZapVMHandleArea, trueInDebug, \ 97660484Sobrien "Zap freed VM handle space with 0xBCBCBCBC") \ 97760484Sobrien \ 97860484Sobrien develop(bool, ZapJNIHandleArea, trueInDebug, \ 97960484Sobrien "Zap freed JNI handle space with 0xFEFEFEFE") \ 98060484Sobrien \ 98160484Sobrien notproduct(bool, ZapStackSegments, trueInDebug, \ 98260484Sobrien "Zap allocated/freed stack segments with 0xFADFADED") \ 98360484Sobrien \ 98460484Sobrien develop(bool, ZapUnusedHeapArea, trueInDebug, \ 98560484Sobrien "Zap unused heap space with 0xBAADBABE") \ 98660484Sobrien \ 98760484Sobrien develop(bool, TraceZapUnusedHeapArea, false, \ 98860484Sobrien "Trace zapping of unused heap space") \ 98960484Sobrien \ 99060484Sobrien develop(bool, CheckZapUnusedHeapArea, false, \ 99160484Sobrien "Check zapping of unused heap space") \ 99260484Sobrien \ 99360484Sobrien develop(bool, ZapFillerObjects, trueInDebug, \ 99460484Sobrien "Zap filler objects with 0xDEAFBABE") \ 99560484Sobrien \ 99660484Sobrien develop(bool, PrintVMMessages, true, \ 99760484Sobrien "Print VM messages on console") \ 99860484Sobrien \ 99960484Sobrien product(bool, PrintGCApplicationConcurrentTime, false, \ 100060484Sobrien "Print the time the application has been running") \ 100160484Sobrien \ 100260484Sobrien product(bool, PrintGCApplicationStoppedTime, false, \ 100360484Sobrien "Print the time the application has been stopped") \ 100460484Sobrien \ 100560484Sobrien diagnostic(bool, VerboseVerification, false, \ 100660484Sobrien "Display detailed verification details") \ 100760484Sobrien \ 100860484Sobrien notproduct(uintx, ErrorHandlerTest, 0, \ 100960484Sobrien "If > 0, provokes an error after VM initialization; the value " \ 101060484Sobrien "determines which error to provoke. See test_error_handler() " \ 101160484Sobrien "in debug.cpp.") \ 101260484Sobrien \ 101360484Sobrien notproduct(uintx, TestCrashInErrorHandler, 0, \ 101460484Sobrien "If > 0, provokes an error inside VM error handler (a secondary " \ 101560484Sobrien "crash). see test_error_handler() in debug.cpp.") \ 101660484Sobrien \ 101760484Sobrien notproduct(bool, TestSafeFetchInErrorHandler, false, \ 101860484Sobrien "If true, tests SafeFetch inside error handler.") \ 101960484Sobrien \ 102060484Sobrien develop(bool, Verbose, false, \ 102160484Sobrien "Print additional debugging information from other modes") \ 102260484Sobrien \ 102360484Sobrien develop(bool, PrintMiscellaneous, false, \ 102460484Sobrien "Print uncategorized debugging information (requires +Verbose)") \ 102560484Sobrien \ 102660484Sobrien develop(bool, WizardMode, false, \ 102760484Sobrien "Print much more debugging information") \ 102860484Sobrien \ 102960484Sobrien product(bool, ShowMessageBoxOnError, false, \ 103060484Sobrien "Keep process alive on VM fatal error") \ 103160484Sobrien \ 103260484Sobrien product(bool, CreateCoredumpOnCrash, true, \ 103360484Sobrien "Create core/mini dump on VM fatal error") \ 103460484Sobrien \ 103560484Sobrien product(uintx, ErrorLogTimeout, 2 * 60, \ 103660484Sobrien "Timeout, in seconds, to limit the time spent on writing an " \ 103760484Sobrien "error log in case of a crash.") \ 103860484Sobrien \ 103960484Sobrien product_pd(bool, UseOSErrorReporting, \ 104060484Sobrien "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 104160484Sobrien \ 104260484Sobrien product(bool, SuppressFatalErrorMessage, false, \ 104360484Sobrien "Report NO fatal error message (avoid deadlock)") \ 104460484Sobrien \ 104560484Sobrien product(ccstrlist, OnError, "", \ 104660484Sobrien "Run user-defined commands on fatal error; see VMError.cpp " \ 104760484Sobrien "for examples") \ 104860484Sobrien \ 104960484Sobrien product(ccstrlist, OnOutOfMemoryError, "", \ 105060484Sobrien "Run user-defined commands on first java.lang.OutOfMemoryError") \ 105160484Sobrien \ 105260484Sobrien manageable(bool, HeapDumpBeforeFullGC, false, \ 105360484Sobrien "Dump heap to file before any major stop-the-world GC") \ 105460484Sobrien \ 105560484Sobrien manageable(bool, HeapDumpAfterFullGC, false, \ 105660484Sobrien "Dump heap to file after any major stop-the-world GC") \ 105760484Sobrien \ 105860484Sobrien manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 105960484Sobrien "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 106060484Sobrien \ 106160484Sobrien manageable(ccstr, HeapDumpPath, NULL, \ 106260484Sobrien "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \ 106360484Sobrien "directory) of the dump file (defaults to java_pid<pid>.hprof " \ 106460484Sobrien "in the working directory)") \ 106560484Sobrien \ 106660484Sobrien develop(size_t, SegmentedHeapDumpThreshold, 2*G, \ 106760484Sobrien "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 106860484Sobrien "when the heap usage is larger than this") \ 106960484Sobrien \ 107060484Sobrien develop(size_t, HeapDumpSegmentSize, 1*G, \ 107160484Sobrien "Approximate segment size when generating a segmented heap dump") \ 107260484Sobrien \ 107360484Sobrien develop(bool, BreakAtWarning, false, \ 107460484Sobrien "Execute breakpoint upon encountering VM warning") \ 107560484Sobrien \ 107660484Sobrien develop(bool, TraceVMOperation, false, \ 107760484Sobrien "Trace VM operations") \ 107860484Sobrien \ 107960484Sobrien develop(bool, UseFakeTimers, false, \ 108060484Sobrien "Tell whether the VM should use system time or a fake timer") \ 108160484Sobrien \ 108260484Sobrien product(ccstr, NativeMemoryTracking, "off", \ 108360484Sobrien "Native memory tracking options") \ 108460484Sobrien \ 108560484Sobrien diagnostic(bool, PrintNMTStatistics, false, \ 108660484Sobrien "Print native memory tracking summary data if it is on") \ 108760484Sobrien \ 108860484Sobrien diagnostic(bool, LogCompilation, false, \ 108960484Sobrien "Log compilation activity in detail to LogFile") \ 109060484Sobrien \ 109160484Sobrien product(bool, PrintCompilation, false, \ 109260484Sobrien "Print compilations") \ 109360484Sobrien \ 109460484Sobrien diagnostic(bool, TraceNMethodInstalls, false, \ 109560484Sobrien "Trace nmethod installation") \ 109660484Sobrien \ 109760484Sobrien diagnostic(intx, ScavengeRootsInCode, 2, \ 109860484Sobrien "0: do not allow scavengable oops in the code cache; " \ 109960484Sobrien "1: allow scavenging from the code cache; " \ 110060484Sobrien "2: emit as many constants as the compiler can see") \ 110160484Sobrien range(0, 2) \ 110260484Sobrien \ 110360484Sobrien product(bool, AlwaysRestoreFPU, false, \ 110460484Sobrien "Restore the FPU control word after every JNI call (expensive)") \ 110560484Sobrien \ 110660484Sobrien product(bool, MemoryMapImage, false, \ 110760484Sobrien "Memory map entire runtime image") \ 110860484Sobrien \ 110960484Sobrien diagnostic(bool, PrintCompilation2, false, \ 111060484Sobrien "Print additional statistics per compilation") \ 111160484Sobrien \ 111260484Sobrien diagnostic(bool, PrintAdapterHandlers, false, \ 111360484Sobrien "Print code generated for i2c/c2i adapters") \ 111460484Sobrien \ 111560484Sobrien diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 111660484Sobrien "Verify that i2c/c2i adapters are called properly") \ 111760484Sobrien \ 111860484Sobrien develop(bool, VerifyAdapterSharing, false, \ 111960484Sobrien "Verify that the code for shared adapters is the equivalent") \ 112060484Sobrien \ 112160484Sobrien diagnostic(bool, PrintAssembly, false, \ 112260484Sobrien "Print assembly code (using external disassembler.so)") \ 112360484Sobrien \ 112460484Sobrien diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 112560484Sobrien "Print options string passed to disassembler.so") \ 112660484Sobrien \ 112760484Sobrien diagnostic(bool, PrintNMethods, false, \ 112860484Sobrien "Print assembly code for nmethods when generated") \ 112960484Sobrien \ 113060484Sobrien diagnostic(bool, PrintNativeNMethods, false, \ 113160484Sobrien "Print assembly code for native nmethods when generated") \ 113260484Sobrien \ 113360484Sobrien develop(bool, PrintDebugInfo, false, \ 113460484Sobrien "Print debug information for all nmethods when generated") \ 113560484Sobrien \ 113660484Sobrien develop(bool, PrintRelocations, false, \ 113760484Sobrien "Print relocation information for all nmethods when generated") \ 113860484Sobrien \ 113960484Sobrien develop(bool, PrintDependencies, false, \ 114060484Sobrien "Print dependency information for all nmethods when generated") \ 114160484Sobrien \ 114260484Sobrien develop(bool, PrintExceptionHandlers, false, \ 114360484Sobrien "Print exception handler tables for all nmethods when generated") \ 114460484Sobrien \ 114560484Sobrien develop(bool, StressCompiledExceptionHandlers, false, \ 114660484Sobrien "Exercise compiled exception handlers") \ 114760484Sobrien \ 114860484Sobrien develop(bool, InterceptOSException, false, \ 114960484Sobrien "Start debugger when an implicit OS (e.g. NULL) " \ 115060484Sobrien "exception happens") \ 115160484Sobrien \ 115260484Sobrien product(bool, PrintCodeCache, false, \ 115360484Sobrien "Print the code cache memory usage when exiting") \ 115460484Sobrien \ 115560484Sobrien develop(bool, PrintCodeCache2, false, \ 115660484Sobrien "Print detailed usage information on the code cache when exiting")\ 115760484Sobrien \ 115860484Sobrien product(bool, PrintCodeCacheOnCompilation, false, \ 115960484Sobrien "Print the code cache memory usage each time a method is " \ 116060484Sobrien "compiled") \ 116160484Sobrien \ 116260484Sobrien diagnostic(bool, PrintStubCode, false, \ 116360484Sobrien "Print generated stub code") \ 116460484Sobrien \ 116560484Sobrien product(bool, StackTraceInThrowable, true, \ 116660484Sobrien "Collect backtrace in throwable when exception happens") \ 116760484Sobrien \ 116860484Sobrien product(bool, OmitStackTraceInFastThrow, true, \ 116960484Sobrien "Omit backtraces for some 'hot' exceptions in optimized code") \ 117060484Sobrien \ 117160484Sobrien product(bool, ProfilerPrintByteCodeStatistics, false, \ 117260484Sobrien "Print bytecode statistics when dumping profiler output") \ 117360484Sobrien \ 117460484Sobrien product(bool, ProfilerRecordPC, false, \ 117560484Sobrien "Collect ticks for each 16 byte interval of compiled code") \ 117660484Sobrien \ 117760484Sobrien product(bool, ProfileVM, false, \ 117860484Sobrien "Profile ticks that fall within VM (either in the VM Thread " \ 117960484Sobrien "or VM code called through stubs)") \ 118060484Sobrien \ 118160484Sobrien product(bool, ProfileIntervals, false, \ 118260484Sobrien "Print profiles for each interval (see ProfileIntervalsTicks)") \ 118360484Sobrien \ 118460484Sobrien notproduct(bool, ProfilerCheckIntervals, false, \ 118560484Sobrien "Collect and print information on spacing of profiler ticks") \ 118660484Sobrien \ 118760484Sobrien product(bool, PrintWarnings, true, \ 118860484Sobrien "Print JVM warnings to output stream") \ 118960484Sobrien \ 119060484Sobrien notproduct(uintx, WarnOnStalledSpinLock, 0, \ 119160484Sobrien "Print warnings for stalled SpinLocks") \ 119260484Sobrien \ 119360484Sobrien product(bool, RegisterFinalizersAtInit, true, \ 119460484Sobrien "Register finalizable objects at end of Object.<init> or " \ 119560484Sobrien "after allocation") \ 119660484Sobrien \ 119760484Sobrien develop(bool, RegisterReferences, true, \ 119860484Sobrien "Tell whether the VM should register soft/weak/final/phantom " \ 119960484Sobrien "references") \ 120060484Sobrien \ 120160484Sobrien develop(bool, IgnoreRewrites, false, \ 120260484Sobrien "Suppress rewrites of bytecodes in the oopmap generator. " \ 120360484Sobrien "This is unsafe!") \ 120460484Sobrien \ 120560484Sobrien develop(bool, PrintCodeCacheExtension, false, \ 120660484Sobrien "Print extension of code cache") \ 120760484Sobrien \ 120860484Sobrien develop(bool, UsePrivilegedStack, true, \ 120960484Sobrien "Enable the security JVM functions") \ 121060484Sobrien \ 121160484Sobrien develop(bool, ProtectionDomainVerification, true, \ 121260484Sobrien "Verify protection domain before resolution in system dictionary")\ 121360484Sobrien \ 121460484Sobrien product(bool, ClassUnloading, true, \ 121560484Sobrien "Do unloading of classes") \ 121660484Sobrien \ 121760484Sobrien product(bool, ClassUnloadingWithConcurrentMark, true, \ 121860484Sobrien "Do unloading of classes with a concurrent marking cycle") \ 121960484Sobrien \ 122060484Sobrien develop(bool, DisableStartThread, false, \ 122160484Sobrien "Disable starting of additional Java threads " \ 122260484Sobrien "(for debugging only)") \ 122360484Sobrien \ 122460484Sobrien develop(bool, MemProfiling, false, \ 122560484Sobrien "Write memory usage profiling to log file") \ 122660484Sobrien \ 122760484Sobrien notproduct(bool, PrintSystemDictionaryAtExit, false, \ 122860484Sobrien "Print the system dictionary at exit") \ 122960484Sobrien \ 123060484Sobrien experimental(intx, PredictedLoadedClassCount, 0, \ 123160484Sobrien "Experimental: Tune loaded class cache starting size") \ 123260484Sobrien \ 123360484Sobrien diagnostic(bool, UnsyncloadClass, false, \ 123460484Sobrien "Unstable: VM calls loadClass unsynchronized. Custom " \ 123560484Sobrien "class loader must call VM synchronized for findClass " \ 123660484Sobrien "and defineClass.") \ 123760484Sobrien \ 123860484Sobrien product(bool, AlwaysLockClassLoader, false, \ 123960484Sobrien "Require the VM to acquire the class loader lock before calling " \ 124060484Sobrien "loadClass() even for class loaders registering " \ 124160484Sobrien "as parallel capable") \ 124260484Sobrien \ 124360484Sobrien product(bool, AllowParallelDefineClass, false, \ 124460484Sobrien "Allow parallel defineClass requests for class loaders " \ 124560484Sobrien "registering as parallel capable") \ 124660484Sobrien \ 124760484Sobrien product(bool, MustCallLoadClassInternal, false, \ 124860484Sobrien "Call loadClassInternal() rather than loadClass()") \ 124960484Sobrien \ 125060484Sobrien product_pd(bool, DontYieldALot, \ 125160484Sobrien "Throw away obvious excess yield calls") \ 125260484Sobrien \ 125360484Sobrien product_pd(bool, ConvertSleepToYield, \ 125460484Sobrien "Convert sleep(0) to thread yield " \ 125560484Sobrien "(may be off for Solaris to improve GUI)") \ 125660484Sobrien \ 125760484Sobrien product(bool, ConvertYieldToSleep, false, \ 125860484Sobrien "Convert yield to a sleep of MinSleepInterval to simulate Win32 " \ 125960484Sobrien "behavior") \ 126060484Sobrien \ 126160484Sobrien develop(bool, UseDetachedThreads, true, \ 126260484Sobrien "Use detached threads that are recycled upon termination " \ 126360484Sobrien "(for Solaris only)") \ 126460484Sobrien \ 126560484Sobrien product(bool, UseLWPSynchronization, true, \ 126660484Sobrien "Use LWP-based instead of libthread-based synchronization " \ 126760484Sobrien "(SPARC only)") \ 126860484Sobrien \ 126960484Sobrien experimental(ccstr, SyncKnobs, NULL, \ 127060484Sobrien "(Unstable) Various monitor synchronization tunables") \ 127160484Sobrien \ 127260484Sobrien experimental(intx, EmitSync, 0, \ 127360484Sobrien "(Unsafe, Unstable) " \ 127460484Sobrien "Control emission of inline sync fast-path code") \ 127560484Sobrien \ 127660484Sobrien product(intx, MonitorBound, 0, "Bound Monitor population") \ 127760484Sobrien \ 127860484Sobrien product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ 127960484Sobrien \ 128060484Sobrien experimental(intx, SyncFlags, 0, "(Unsafe, Unstable) " \ 128160484Sobrien "Experimental Sync flags") \ 128260484Sobrien \ 128360484Sobrien experimental(intx, SyncVerbose, 0, "(Unstable)") \ 128460484Sobrien \ 128560484Sobrien experimental(intx, ClearFPUAtPark, 0, "(Unsafe, Unstable)") \ 128660484Sobrien \ 128760484Sobrien experimental(intx, hashCode, 5, \ 128860484Sobrien "(Unstable) select hashCode generation algorithm") \ 128960484Sobrien \ 129060484Sobrien experimental(intx, WorkAroundNPTLTimedWaitHang, 1, \ 129160484Sobrien "(Unstable, Linux-specific) " \ 129260484Sobrien "avoid NPTL-FUTEX hang pthread_cond_timedwait") \ 129360484Sobrien \ 129460484Sobrien product(bool, FilterSpuriousWakeups, true, \ 129560484Sobrien "When true prevents OS-level spurious, or premature, wakeups " \ 129660484Sobrien "from Object.wait (Ignored for Windows)") \ 129760484Sobrien \ 129860484Sobrien experimental(intx, NativeMonitorTimeout, -1, "(Unstable)") \ 129960484Sobrien \ 130060484Sobrien experimental(intx, NativeMonitorFlags, 0, "(Unstable)") \ 130160484Sobrien \ 130260484Sobrien experimental(intx, NativeMonitorSpinLimit, 20, "(Unstable)") \ 130360484Sobrien \ 130460484Sobrien develop(bool, UsePthreads, false, \ 130560484Sobrien "Use pthread-based instead of libthread-based synchronization " \ 130660484Sobrien "(SPARC only)") \ 130760484Sobrien \ 130860484Sobrien product(bool, ReduceSignalUsage, false, \ 130960484Sobrien "Reduce the use of OS signals in Java and/or the VM") \ 131060484Sobrien \ 131160484Sobrien develop_pd(bool, ShareVtableStubs, \ 131260484Sobrien "Share vtable stubs (smaller code but worse branch prediction") \ 131360484Sobrien \ 131460484Sobrien develop(bool, LoadLineNumberTables, true, \ 131560484Sobrien "Tell whether the class file parser loads line number tables") \ 131660484Sobrien \ 131760484Sobrien develop(bool, LoadLocalVariableTables, true, \ 131860484Sobrien "Tell whether the class file parser loads local variable tables") \ 131960484Sobrien \ 132060484Sobrien develop(bool, LoadLocalVariableTypeTables, true, \ 132160484Sobrien "Tell whether the class file parser loads local variable type" \ 132260484Sobrien "tables") \ 132360484Sobrien \ 132460484Sobrien product(bool, AllowUserSignalHandlers, false, \ 132560484Sobrien "Do not complain if the application installs signal handlers " \ 132660484Sobrien "(Solaris & Linux only)") \ 132760484Sobrien \ 132860484Sobrien product(bool, UseSignalChaining, true, \ 132960484Sobrien "Use signal-chaining to invoke signal handlers installed " \ 133060484Sobrien "by the application (Solaris & Linux only)") \ 133160484Sobrien \ 133260484Sobrien product(bool, UseAltSigs, false, \ 133360484Sobrien "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 133460484Sobrien "internal signals (Solaris only)") \ 133560484Sobrien \ 133660484Sobrien product(bool, AllowJNIEnvProxy, false, \ 133760484Sobrien "Allow JNIEnv proxies for jdbx") \ 133860484Sobrien \ 133960484Sobrien product(bool, JNIDetachReleasesMonitors, true, \ 134060484Sobrien "JNI DetachCurrentThread releases monitors owned by thread") \ 134160484Sobrien \ 134260484Sobrien product(bool, RestoreMXCSROnJNICalls, false, \ 134360484Sobrien "Restore MXCSR when returning from JNI calls") \ 134460484Sobrien \ 134560484Sobrien product(bool, CheckJNICalls, false, \ 134660484Sobrien "Verify all arguments to JNI calls") \ 134760484Sobrien \ 134860484Sobrien product(bool, CheckEndorsedAndExtDirs, false, \ 134960484Sobrien "Verify the endorsed and extension directories are not used") \ 135060484Sobrien \ 135160484Sobrien product(bool, UseFastJNIAccessors, true, \ 135260484Sobrien "Use optimized versions of Get<Primitive>Field") \ 135360484Sobrien \ 135460484Sobrien product(intx, MaxJNILocalCapacity, 65536, \ 135560484Sobrien "Maximum allowable local JNI handle capacity to " \ 135660484Sobrien "EnsureLocalCapacity() and PushLocalFrame(), " \ 135760484Sobrien "where <= 0 is unlimited, default: 65536") \ 135860484Sobrien \ 135960484Sobrien product(bool, EagerXrunInit, false, \ 136060484Sobrien "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 136160484Sobrien "but not all -Xrun libraries may support the state of the VM " \ 136260484Sobrien "at this time") \ 136360484Sobrien \ 136460484Sobrien product(bool, PreserveAllAnnotations, false, \ 136560484Sobrien "Preserve RuntimeInvisibleAnnotations as well " \ 136660484Sobrien "as RuntimeVisibleAnnotations") \ 136760484Sobrien \ 136860484Sobrien develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 136960484Sobrien "Number of OutOfMemoryErrors preallocated with backtrace") \ 137060484Sobrien \ 137160484Sobrien product(bool, UseXMMForArrayCopy, false, \ 137260484Sobrien "Use SSE2 MOVQ instruction for Arraycopy") \ 137360484Sobrien \ 137460484Sobrien product(intx, FieldsAllocationStyle, 1, \ 137560484Sobrien "0 - type based with oops first, " \ 137660484Sobrien "1 - with oops last, " \ 137760484Sobrien "2 - oops in super and sub classes are together") \ 137860484Sobrien range(0, 2) \ 137960484Sobrien \ 138060484Sobrien product(bool, CompactFields, true, \ 138160484Sobrien "Allocate nonstatic fields in gaps between previous fields") \ 138260484Sobrien \ 138360484Sobrien notproduct(bool, PrintFieldLayout, false, \ 138460484Sobrien "Print field layout for each class") \ 138560484Sobrien \ 138660484Sobrien /* Need to limit the extent of the padding to reasonable size. */\ 138760484Sobrien /* 8K is well beyond the reasonable HW cache line size, even with */\ 138860484Sobrien /* aggressive prefetching, while still leaving the room for segregating */\ 138960484Sobrien /* among the distinct pages. */\ 139060484Sobrien product(intx, ContendedPaddingWidth, 128, \ 139160484Sobrien "How many bytes to pad the fields/classes marked @Contended with")\ 139260484Sobrien range(0, 8192) \ 139360484Sobrien constraint(ContendedPaddingWidthConstraintFunc) \ 139460484Sobrien \ 139560484Sobrien product(bool, EnableContended, true, \ 139660484Sobrien "Enable @Contended annotation support") \ 139760484Sobrien \ 139860484Sobrien product(bool, RestrictContended, true, \ 139960484Sobrien "Restrict @Contended to trusted classes") \ 140060484Sobrien \ 140160484Sobrien product(bool, UseBiasedLocking, true, \ 140260484Sobrien "Enable biased locking in JVM") \ 140360484Sobrien \ 140460484Sobrien product(intx, BiasedLockingStartupDelay, 4000, \ 140560484Sobrien "Number of milliseconds to wait before enabling biased locking") \ 140660484Sobrien \ 140760484Sobrien diagnostic(bool, PrintBiasedLockingStatistics, false, \ 140860484Sobrien "Print statistics of biased locking in JVM") \ 140960484Sobrien \ 141060484Sobrien product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 141160484Sobrien "Threshold of number of revocations per type to try to " \ 141260484Sobrien "rebias all objects in the heap of that type") \ 141360484Sobrien \ 141460484Sobrien product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 141560484Sobrien "Threshold of number of revocations per type to permanently " \ 141660484Sobrien "revoke biases of all objects in the heap of that type") \ 141760484Sobrien \ 141860484Sobrien product(intx, BiasedLockingDecayTime, 25000, \ 141960484Sobrien "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 142060484Sobrien "type after previous bulk rebias") \ 142160484Sobrien \ 142260484Sobrien /* tracing */ \ 142360484Sobrien \ 142460484Sobrien notproduct(bool, TraceRuntimeCalls, false, \ 142560484Sobrien "Trace run-time calls") \ 142660484Sobrien \ 142760484Sobrien develop(bool, TraceJNICalls, false, \ 142860484Sobrien "Trace JNI calls") \ 142960484Sobrien \ 143060484Sobrien develop(bool, StressRewriter, false, \ 143160484Sobrien "Stress linktime bytecode rewriting") \ 143260484Sobrien \ 143360484Sobrien notproduct(bool, TraceJVMCalls, false, \ 143460484Sobrien "Trace JVM calls") \ 143560484Sobrien \ 143660484Sobrien product(ccstr, TraceJVMTI, NULL, \ 143760484Sobrien "Trace flags for JVMTI functions and events") \ 143860484Sobrien \ 143960484Sobrien /* This option can change an EMCP method into an obsolete method. */ \ 144060484Sobrien /* This can affect tests that except specific methods to be EMCP. */ \ 144160484Sobrien /* This option should be used with caution. */ \ 144260484Sobrien product(bool, StressLdcRewrite, false, \ 144360484Sobrien "Force ldc -> ldc_w rewrite during RedefineClasses") \ 144460484Sobrien \ 144560484Sobrien product(intx, TraceRedefineClasses, 0, \ 144660484Sobrien "Trace level for JVMTI RedefineClasses") \ 144760484Sobrien \ 144860484Sobrien /* change to false by default sometime after Mustang */ \ 144960484Sobrien product(bool, VerifyMergedCPBytecodes, true, \ 145060484Sobrien "Verify bytecodes after RedefineClasses constant pool merging") \ 145160484Sobrien \ 145260484Sobrien develop(bool, TraceJNIHandleAllocation, false, \ 145360484Sobrien "Trace allocation/deallocation of JNI handle blocks") \ 145460484Sobrien \ 145560484Sobrien develop(bool, TraceBytecodes, false, \ 145660484Sobrien "Trace bytecode execution") \ 145760484Sobrien \ 145860484Sobrien develop(bool, TraceClassInitialization, false, \ 145960484Sobrien "Trace class initialization") \ 146060484Sobrien \ 146160484Sobrien product(bool, TraceExceptions, false, \ 146260484Sobrien "Trace exceptions") \ 146360484Sobrien \ 146460484Sobrien develop(bool, TraceICs, false, \ 146560484Sobrien "Trace inline cache changes") \ 146660484Sobrien \ 146760484Sobrien notproduct(bool, TraceInvocationCounterOverflow, false, \ 146860484Sobrien "Trace method invocation counter overflow") \ 146960484Sobrien \ 147060484Sobrien develop(bool, TraceInlineCacheClearing, false, \ 147160484Sobrien "Trace clearing of inline caches in nmethods") \ 147260484Sobrien \ 147360484Sobrien develop(bool, TraceDependencies, false, \ 147460484Sobrien "Trace dependencies") \ 147560484Sobrien \ 147660484Sobrien develop(bool, VerifyDependencies, trueInDebug, \ 147760484Sobrien "Exercise and verify the compilation dependency mechanism") \ 147860484Sobrien \ 147960484Sobrien develop(bool, TraceNewOopMapGeneration, false, \ 148060484Sobrien "Trace OopMapGeneration") \ 148160484Sobrien \ 148260484Sobrien develop(bool, TraceNewOopMapGenerationDetailed, false, \ 148360484Sobrien "Trace OopMapGeneration: print detailed cell states") \ 148460484Sobrien \ 148560484Sobrien develop(bool, TimeOopMap, false, \ 148660484Sobrien "Time calls to GenerateOopMap::compute_map() in sum") \ 148760484Sobrien \ 148860484Sobrien develop(bool, TimeOopMap2, false, \ 148960484Sobrien "Time calls to GenerateOopMap::compute_map() individually") \ 149060484Sobrien \ 149160484Sobrien develop(bool, TraceMonitorMismatch, false, \ 149260484Sobrien "Trace monitor matching failures during OopMapGeneration") \ 149360484Sobrien \ 149460484Sobrien develop(bool, TraceOopMapRewrites, false, \ 149560484Sobrien "Trace rewriting of method oops during oop map generation") \ 149660484Sobrien \ 149760484Sobrien develop(bool, TraceSafepoint, false, \ 149860484Sobrien "Trace safepoint operations") \ 149960484Sobrien \ 150060484Sobrien develop(bool, TraceICBuffer, false, \ 150160484Sobrien "Trace usage of IC buffer") \ 150260484Sobrien \ 150360484Sobrien develop(bool, TraceCompiledIC, false, \ 150460484Sobrien "Trace changes of compiled IC") \ 150560484Sobrien \ 150660484Sobrien notproduct(bool, TraceZapDeadLocals, false, \ 150760484Sobrien "Trace zapping dead locals") \ 150860484Sobrien \ 150960484Sobrien develop(bool, TraceStartupTime, false, \ 151060484Sobrien "Trace setup time") \ 151160484Sobrien \ 151260484Sobrien develop(bool, TraceProtectionDomainVerification, false, \ 151360484Sobrien "Trace protection domain verification") \ 151460484Sobrien \ 151560484Sobrien develop(bool, TraceClearedExceptions, false, \ 151660484Sobrien "Print when an exception is forcibly cleared") \ 151760484Sobrien \ 151860484Sobrien product(bool, TraceClassResolution, false, \ 151960484Sobrien "Trace all constant pool resolutions (for debugging)") \ 152060484Sobrien \ 152160484Sobrien product(bool, TraceBiasedLocking, false, \ 152260484Sobrien "Trace biased locking in JVM") \ 152360484Sobrien \ 152460484Sobrien product(bool, TraceMonitorInflation, false, \ 152560484Sobrien "Trace monitor inflation in JVM") \ 152660484Sobrien \ 152760484Sobrien /* gc */ \ 152860484Sobrien \ 152960484Sobrien product(bool, UseSerialGC, false, \ 153060484Sobrien "Use the Serial garbage collector") \ 153160484Sobrien \ 153260484Sobrien product(bool, UseG1GC, false, \ 153360484Sobrien "Use the Garbage-First garbage collector") \ 153460484Sobrien \ 153560484Sobrien product(bool, UseParallelGC, false, \ 153660484Sobrien "Use the Parallel Scavenge garbage collector") \ 153760484Sobrien \ 153860484Sobrien product(bool, UseParallelOldGC, false, \ 153960484Sobrien "Use the Parallel Old garbage collector") \ 154060484Sobrien \ 154160484Sobrien product(uintx, HeapMaximumCompactionInterval, 20, \ 154260484Sobrien "How often should we maximally compact the heap (not allowing " \ 154360484Sobrien "any dead space)") \ 154460484Sobrien \ 154560484Sobrien product(uintx, HeapFirstMaximumCompactionCount, 3, \ 154660484Sobrien "The collection count for the first maximum compaction") \ 154760484Sobrien \ 154860484Sobrien product(bool, UseMaximumCompactionOnSystemGC, true, \ 154960484Sobrien "Use maximum compaction in the Parallel Old garbage collector " \ 155060484Sobrien "for a system GC") \ 155160484Sobrien \ 155260484Sobrien product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 155360484Sobrien "The mean used by the parallel compact dead wood " \ 155460484Sobrien "limiter (a number between 0-100)") \ 155560484Sobrien range(0, 100) \ 155660484Sobrien \ 155760484Sobrien product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 155860484Sobrien "The standard deviation used by the parallel compact dead wood " \ 155960484Sobrien "limiter (a number between 0-100)") \ 156060484Sobrien range(0, 100) \ 156160484Sobrien \ 156260484Sobrien product(uint, ParallelGCThreads, 0, \ 156360484Sobrien "Number of parallel threads parallel gc will use") \ 156460484Sobrien \ 156560484Sobrien product(bool, UseDynamicNumberOfGCThreads, false, \ 156660484Sobrien "Dynamically choose the number of parallel threads " \ 156760484Sobrien "parallel gc will use") \ 156860484Sobrien \ 156960484Sobrien diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 157060484Sobrien "Force dynamic selection of the number of " \ 157160484Sobrien "parallel threads parallel gc will use to aid debugging") \ 157260484Sobrien \ 157360484Sobrien product(size_t, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 157460484Sobrien "Size of heap (bytes) per GC thread used in calculating the " \ 157560484Sobrien "number of GC threads") \ 157660484Sobrien range((uintx)os::vm_page_size(), max_uintx) \ 157760484Sobrien \ 157860484Sobrien product(bool, TraceDynamicGCThreads, false, \ 157960484Sobrien "Trace the dynamic GC thread usage") \ 158060484Sobrien \ 158160484Sobrien develop(bool, ParallelOldGCSplitALot, false, \ 158260484Sobrien "Provoke splitting (copying data from a young gen space to " \ 158360484Sobrien "multiple destination spaces)") \ 158460484Sobrien \ 158560484Sobrien develop(uintx, ParallelOldGCSplitInterval, 3, \ 158660484Sobrien "How often to provoke splitting a young gen space") \ 158760484Sobrien range(0, max_uintx) \ 158860484Sobrien \ 158960484Sobrien product(uint, ConcGCThreads, 0, \ 159060484Sobrien "Number of threads concurrent gc will use") \ 159160484Sobrien \ 159260484Sobrien product(size_t, YoungPLABSize, 4096, \ 159360484Sobrien "Size of young gen promotion LAB's (in HeapWords)") \ 159460484Sobrien \ 159560484Sobrien product(size_t, OldPLABSize, 1024, \ 159660484Sobrien "Size of old gen promotion LAB's (in HeapWords), or Number \ 159760484Sobrien of blocks to attempt to claim when refilling CMS LAB's") \ 159860484Sobrien \ 159960484Sobrien product(uintx, GCTaskTimeStampEntries, 200, \ 160060484Sobrien "Number of time stamp entries per gc worker thread") \ 160160484Sobrien range(1, max_uintx) \ 160260484Sobrien \ 160360484Sobrien product(bool, AlwaysTenure, false, \ 160460484Sobrien "Always tenure objects in eden (ParallelGC only)") \ 160560484Sobrien \ 160660484Sobrien product(bool, NeverTenure, false, \ 160760484Sobrien "Never tenure objects in eden, may tenure on overflow " \ 160860484Sobrien "(ParallelGC only)") \ 160960484Sobrien \ 161060484Sobrien product(bool, ScavengeBeforeFullGC, true, \ 161160484Sobrien "Scavenge youngest generation before each full GC.") \ 161260484Sobrien \ 161360484Sobrien develop(bool, ScavengeWithObjectsInToSpace, false, \ 161460484Sobrien "Allow scavenges to occur when to-space contains objects") \ 161560484Sobrien \ 161660484Sobrien product(bool, UseConcMarkSweepGC, false, \ 161760484Sobrien "Use Concurrent Mark-Sweep GC in the old generation") \ 161860484Sobrien \ 161960484Sobrien product(bool, ExplicitGCInvokesConcurrent, false, \ 162060484Sobrien "A System.gc() request invokes a concurrent collection; " \ 162160484Sobrien "(effective only when using concurrent collectors)") \ 162260484Sobrien \ 162360484Sobrien product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 162460484Sobrien "A System.gc() request invokes a concurrent collection and " \ 162560484Sobrien "also unloads classes during such a concurrent gc cycle " \ 162660484Sobrien "(effective only when UseConcMarkSweepGC)") \ 162760484Sobrien \ 162860484Sobrien product(bool, GCLockerInvokesConcurrent, false, \ 162960484Sobrien "The exit of a JNI critical section necessitating a scavenge, " \ 163060484Sobrien "also kicks off a background concurrent collection") \ 163160484Sobrien \ 163260484Sobrien product(uintx, GCLockerEdenExpansionPercent, 5, \ 163360484Sobrien "How much the GC can expand the eden by while the GC locker " \ 163460484Sobrien "is active (as a percentage)") \ 163560484Sobrien range(0, 100) \ 163660484Sobrien \ 163760484Sobrien diagnostic(uintx, GCLockerRetryAllocationCount, 2, \ 163860484Sobrien "Number of times to retry allocations when " \ 163960484Sobrien "blocked by the GC locker") \ 164060484Sobrien \ 164160484Sobrien develop(bool, UseCMSAdaptiveFreeLists, true, \ 164260484Sobrien "Use adaptive free lists in the CMS generation") \ 164360484Sobrien \ 164460484Sobrien develop(bool, UseAsyncConcMarkSweepGC, true, \ 164560484Sobrien "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 164660484Sobrien \ 164760484Sobrien product(bool, UseCMSBestFit, true, \ 164860484Sobrien "Use CMS best fit allocation strategy") \ 164960484Sobrien \ 165060484Sobrien product(bool, UseParNewGC, false, \ 165160484Sobrien "Use parallel threads in the new generation") \ 165260484Sobrien \ 165360484Sobrien product(bool, PrintTaskqueue, false, \ 165460484Sobrien "Print taskqueue statistics for parallel collectors") \ 165560484Sobrien \ 165660484Sobrien product(bool, PrintTerminationStats, false, \ 165760484Sobrien "Print termination statistics for parallel collectors") \ 165860484Sobrien \ 165960484Sobrien product(uintx, ParallelGCBufferWastePct, 10, \ 166060484Sobrien "Wasted fraction of parallel allocation buffer") \ 166160484Sobrien range(0, 100) \ 166260484Sobrien \ 166360484Sobrien product(uintx, TargetPLABWastePct, 10, \ 166460484Sobrien "Target wasted space in last buffer as percent of overall " \ 166560484Sobrien "allocation") \ 166660484Sobrien range(1, 100) \ 166760484Sobrien \ 166860484Sobrien product(uintx, PLABWeight, 75, \ 166960484Sobrien "Percentage (0-100) used to weight the current sample when " \ 167060484Sobrien "computing exponentially decaying average for ResizePLAB") \ 167160484Sobrien range(0, 100) \ 167260484Sobrien \ 167360484Sobrien product(bool, ResizePLAB, true, \ 167460484Sobrien "Dynamically resize (survivor space) promotion LAB's") \ 167560484Sobrien \ 167660484Sobrien product(bool, PrintPLAB, false, \ 167760484Sobrien "Print (survivor space) promotion LAB's sizing decisions") \ 167860484Sobrien \ 167960484Sobrien product(intx, ParGCArrayScanChunk, 50, \ 168060484Sobrien "Scan a subset of object array and push remainder, if array is " \ 168160484Sobrien "bigger than this") \ 168260484Sobrien range(1, max_intx) \ 168360484Sobrien \ 168460484Sobrien product(bool, ParGCUseLocalOverflow, false, \ 168560484Sobrien "Instead of a global overflow list, use local overflow stacks") \ 168660484Sobrien \ 168760484Sobrien product(bool, ParGCTrimOverflow, true, \ 168860484Sobrien "Eagerly trim the local overflow lists " \ 168960484Sobrien "(when ParGCUseLocalOverflow)") \ 169060484Sobrien \ 169160484Sobrien notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 169260484Sobrien "Simulate work queue overflow in ParNew") \ 169360484Sobrien \ 169460484Sobrien notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 169560484Sobrien "An `interval' counter that determines how frequently " \ 169660484Sobrien "we simulate overflow; a smaller number increases frequency") \ 169760484Sobrien \ 169860484Sobrien product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 169960484Sobrien "The desired number of objects to claim from the overflow list") \ 170060484Sobrien \ 170160484Sobrien diagnostic(uintx, ParGCStridesPerThread, 2, \ 170260484Sobrien "The number of strides per worker thread that we divide up the " \ 170360484Sobrien "card table scanning work into") \ 170460484Sobrien range(1, max_uintx) \ 170560484Sobrien \ 170660484Sobrien diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 170760484Sobrien "The number of cards in each chunk of the parallel chunks used " \ 170860484Sobrien "during card table scanning") \ 170960484Sobrien range(1, max_intx) \ 171060484Sobrien \ 171160484Sobrien product(uintx, OldPLABWeight, 50, \ 171260484Sobrien "Percentage (0-100) used to weight the current sample when " \ 171360484Sobrien "computing exponentially decaying average for resizing " \ 171460484Sobrien "OldPLABSize") \ 171560484Sobrien range(0, 100) \ 171660484Sobrien \ 171760484Sobrien product(bool, ResizeOldPLAB, true, \ 171860484Sobrien "Dynamically resize (old gen) promotion LAB's") \ 171960484Sobrien \ 172060484Sobrien product(bool, PrintOldPLAB, false, \ 172160484Sobrien "Print (old gen) promotion LAB's sizing decisions") \ 172260484Sobrien \ 172360484Sobrien product(size_t, CMSOldPLABMax, 1024, \ 172460484Sobrien "Maximum size of CMS gen promotion LAB caches per worker " \ 172560484Sobrien "per block size") \ 172660484Sobrien range(1, max_uintx) \ 172760484Sobrien \ 172860484Sobrien product(size_t, CMSOldPLABMin, 16, \ 172960484Sobrien "Minimum size of CMS gen promotion LAB caches per worker " \ 173060484Sobrien "per block size") \ 173160484Sobrien range(1, max_uintx) \ 173260484Sobrien constraint(CMSOldPLABMinConstraintFunc) \ 173360484Sobrien \ 173460484Sobrien product(uintx, CMSOldPLABNumRefills, 4, \ 173560484Sobrien "Nominal number of refills of CMS gen promotion LAB cache " \ 173660484Sobrien "per worker per block size") \ 173760484Sobrien range(1, max_uintx) \ 173860484Sobrien \ 173960484Sobrien product(bool, CMSOldPLABResizeQuicker, false, \ 174060484Sobrien "React on-the-fly during a scavenge to a sudden " \ 174160484Sobrien "change in block demand rate") \ 174260484Sobrien \ 174360484Sobrien product(uintx, CMSOldPLABToleranceFactor, 4, \ 174460484Sobrien "The tolerance of the phase-change detector for on-the-fly " \ 174560484Sobrien "PLAB resizing during a scavenge") \ 174660484Sobrien range(1, max_uintx) \ 174760484Sobrien \ 174860484Sobrien product(uintx, CMSOldPLABReactivityFactor, 2, \ 174960484Sobrien "The gain in the feedback loop for on-the-fly PLAB resizing " \ 175060484Sobrien "during a scavenge") \ 175160484Sobrien \ 175260484Sobrien product(bool, AlwaysPreTouch, false, \ 175360484Sobrien "Force all freshly committed pages to be pre-touched") \ 175460484Sobrien \ 175560484Sobrien product_pd(size_t, CMSYoungGenPerWorker, \ 175660484Sobrien "The maximum size of young gen chosen by default per GC worker " \ 175760484Sobrien "thread available") \ 175860484Sobrien range(1, max_uintx) \ 175960484Sobrien \ 176060484Sobrien product(uintx, CMSIncrementalSafetyFactor, 10, \ 176160484Sobrien "Percentage (0-100) used to add conservatism when computing the " \ 176260484Sobrien "duty cycle") \ 176360484Sobrien range(0, 100) \ 176460484Sobrien \ 176560484Sobrien product(uintx, CMSExpAvgFactor, 50, \ 176660484Sobrien "Percentage (0-100) used to weight the current sample when " \ 176760484Sobrien "computing exponential averages for CMS statistics") \ 176860484Sobrien range(0, 100) \ 176960484Sobrien \ 177060484Sobrien product(uintx, CMS_FLSWeight, 75, \ 177160484Sobrien "Percentage (0-100) used to weight the current sample when " \ 177260484Sobrien "computing exponentially decaying averages for CMS FLS " \ 177360484Sobrien "statistics") \ 177460484Sobrien range(0, 100) \ 177560484Sobrien \ 177660484Sobrien product(uintx, CMS_FLSPadding, 1, \ 177760484Sobrien "The multiple of deviation from mean to use for buffering " \ 177860484Sobrien "against volatility in free list demand") \ 177960484Sobrien \ 178060484Sobrien product(uintx, FLSCoalescePolicy, 2, \ 178160484Sobrien "CMS: aggressiveness level for coalescing, increasing " \ 178260484Sobrien "from 0 to 4") \ 178360484Sobrien range(0, 4) \ 178460484Sobrien \ 178560484Sobrien product(bool, FLSAlwaysCoalesceLarge, false, \ 178660484Sobrien "CMS: larger free blocks are always available for coalescing") \ 178760484Sobrien \ 178860484Sobrien product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 178960484Sobrien "CMS: the smaller the percentage the greater the coalescing " \ 179060484Sobrien "force") \ 179160484Sobrien \ 179260484Sobrien product(double, CMSSmallCoalSurplusPercent, 1.05, \ 179360484Sobrien "CMS: the factor by which to inflate estimated demand of small " \ 179460484Sobrien "block sizes to prevent coalescing with an adjoining block") \ 179560484Sobrien \ 179660484Sobrien product(double, CMSLargeCoalSurplusPercent, 0.95, \ 179760484Sobrien "CMS: the factor by which to inflate estimated demand of large " \ 179860484Sobrien "block sizes to prevent coalescing with an adjoining block") \ 179960484Sobrien \ 180060484Sobrien product(double, CMSSmallSplitSurplusPercent, 1.10, \ 180160484Sobrien "CMS: the factor by which to inflate estimated demand of small " \ 180260484Sobrien "block sizes to prevent splitting to supply demand for smaller " \ 180360484Sobrien "blocks") \ 180460484Sobrien \ 180560484Sobrien product(double, CMSLargeSplitSurplusPercent, 1.00, \ 180660484Sobrien "CMS: the factor by which to inflate estimated demand of large " \ 180760484Sobrien "block sizes to prevent splitting to supply demand for smaller " \ 180860484Sobrien "blocks") \ 180960484Sobrien \ 181060484Sobrien product(bool, CMSExtrapolateSweep, false, \ 181160484Sobrien "CMS: cushion for block demand during sweep") \ 181260484Sobrien \ 181360484Sobrien product(uintx, CMS_SweepWeight, 75, \ 181460484Sobrien "Percentage (0-100) used to weight the current sample when " \ 181560484Sobrien "computing exponentially decaying average for inter-sweep " \ 181660484Sobrien "duration") \ 181760484Sobrien range(0, 100) \ 181860484Sobrien \ 181960484Sobrien product(uintx, CMS_SweepPadding, 1, \ 182060484Sobrien "The multiple of deviation from mean to use for buffering " \ 182160484Sobrien "against volatility in inter-sweep duration") \ 182260484Sobrien \ 182360484Sobrien product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 182460484Sobrien "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 182560484Sobrien "duration exceeds this threshold in milliseconds") \ 182660484Sobrien \ 182760484Sobrien product(bool, CMSClassUnloadingEnabled, true, \ 182860484Sobrien "Whether class unloading enabled when using CMS GC") \ 182960484Sobrien \ 183060484Sobrien product(uintx, CMSClassUnloadingMaxInterval, 0, \ 183160484Sobrien "When CMS class unloading is enabled, the maximum CMS cycle " \ 183260484Sobrien "count for which classes may not be unloaded") \ 183360484Sobrien \ 183460484Sobrien develop(intx, CMSDictionaryChoice, 0, \ 183560484Sobrien "Use BinaryTreeDictionary as default in the CMS generation") \ 183660484Sobrien \ 183760484Sobrien product(uintx, CMSIndexedFreeListReplenish, 4, \ 183860484Sobrien "Replenish an indexed free list with this number of chunks") \ 183960484Sobrien \ 184060484Sobrien product(bool, CMSReplenishIntermediate, true, \ 184160484Sobrien "Replenish all intermediate free-list caches") \ 184260484Sobrien \ 184360484Sobrien product(bool, CMSSplitIndexedFreeListBlocks, true, \ 184460484Sobrien "When satisfying batched demand, split blocks from the " \ 184560484Sobrien "IndexedFreeList whose size is a multiple of requested size") \ 184660484Sobrien \ 184760484Sobrien product(bool, CMSLoopWarn, false, \ 184860484Sobrien "Warn in case of excessive CMS looping") \ 184960484Sobrien \ 185060484Sobrien develop(bool, CMSOverflowEarlyRestoration, false, \ 185160484Sobrien "Restore preserved marks early") \ 185260484Sobrien \ 185360484Sobrien product(size_t, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 185460484Sobrien "Size of marking stack") \ 185560484Sobrien \ 185660484Sobrien product(size_t, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 185760484Sobrien "Maximum size of marking stack") \ 185889857Sobrien range(1, (max_jint - 1)) \ 185960484Sobrien \ 186060484Sobrien notproduct(bool, CMSMarkStackOverflowALot, false, \ 186160484Sobrien "Simulate frequent marking stack / work queue overflow") \ 186260484Sobrien \ 186360484Sobrien notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 186460484Sobrien "An \"interval\" counter that determines how frequently " \ 186560484Sobrien "to simulate overflow; a smaller number increases frequency") \ 186660484Sobrien \ 186760484Sobrien product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 186860484Sobrien "Maximum number of abortable preclean iterations, if > 0") \ 186960484Sobrien \ 187060484Sobrien product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 187160484Sobrien "Maximum time in abortable preclean (in milliseconds)") \ 187260484Sobrien \ 187360484Sobrien product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 187460484Sobrien "Nominal minimum work per abortable preclean iteration") \ 187560484Sobrien \ 187660484Sobrien manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 187760484Sobrien "Time that we sleep between iterations when not given " \ 187860484Sobrien "enough work per iteration") \ 187960484Sobrien \ 188060484Sobrien product(size_t, CMSRescanMultiple, 32, \ 188160484Sobrien "Size (in cards) of CMS parallel rescan task") \ 188260484Sobrien range(1, max_uintx) \ 188360484Sobrien \ 188460484Sobrien product(size_t, CMSConcMarkMultiple, 32, \ 188560484Sobrien "Size (in cards) of CMS concurrent MT marking task") \ 188660484Sobrien range(1, max_uintx) \ 188760484Sobrien \ 188860484Sobrien product(bool, CMSAbortSemantics, false, \ 188960484Sobrien "Whether abort-on-overflow semantics is implemented") \ 189060484Sobrien \ 189160484Sobrien product(bool, CMSParallelInitialMarkEnabled, true, \ 189260484Sobrien "Use the parallel initial mark.") \ 189360484Sobrien \ 189460484Sobrien product(bool, CMSParallelRemarkEnabled, true, \ 189560484Sobrien "Whether parallel remark enabled (only if ParNewGC)") \ 189660484Sobrien \ 189760484Sobrien product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 189860484Sobrien "Whether parallel remark of survivor space " \ 189960484Sobrien "enabled (effective only if CMSParallelRemarkEnabled)") \ 190060484Sobrien \ 190160484Sobrien product(bool, CMSPLABRecordAlways, true, \ 190260484Sobrien "Always record survivor space PLAB boundaries (effective only " \ 190360484Sobrien "if CMSParallelSurvivorRemarkEnabled)") \ 190460484Sobrien \ 190560484Sobrien product(bool, CMSEdenChunksRecordAlways, true, \ 190660484Sobrien "Always record eden chunks used for the parallel initial mark " \ 190760484Sobrien "or remark of eden") \ 190860484Sobrien \ 190960484Sobrien product(bool, CMSPrintEdenSurvivorChunks, false, \ 191060484Sobrien "Print the eden and the survivor chunks used for the parallel " \ 191160484Sobrien "initial mark or remark of the eden/survivor spaces") \ 191260484Sobrien \ 191360484Sobrien product(bool, CMSConcurrentMTEnabled, true, \ 191460484Sobrien "Whether multi-threaded concurrent work enabled " \ 191560484Sobrien "(effective only if ParNewGC)") \ 191660484Sobrien \ 191760484Sobrien product(bool, CMSPrecleaningEnabled, true, \ 191860484Sobrien "Whether concurrent precleaning enabled") \ 191960484Sobrien \ 192060484Sobrien product(uintx, CMSPrecleanIter, 3, \ 192160484Sobrien "Maximum number of precleaning iteration passes") \ 192260484Sobrien range(0, 9) \ 192360484Sobrien \ 192460484Sobrien product(uintx, CMSPrecleanDenominator, 3, \ 192560484Sobrien "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ 192660484Sobrien "ratio") \ 192760484Sobrien range(1, max_uintx) \ 192860484Sobrien constraint(CMSPrecleanDenominatorConstraintFunc) \ 192960484Sobrien \ 193060484Sobrien product(uintx, CMSPrecleanNumerator, 2, \ 193160484Sobrien "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ 193260484Sobrien "ratio") \ 193360484Sobrien range(0, max_uintx-1) \ 193460484Sobrien constraint(CMSPrecleanNumeratorConstraintFunc) \ 193560484Sobrien \ 193660484Sobrien product(bool, CMSPrecleanRefLists1, true, \ 193760484Sobrien "Preclean ref lists during (initial) preclean phase") \ 193860484Sobrien \ 193960484Sobrien product(bool, CMSPrecleanRefLists2, false, \ 194060484Sobrien "Preclean ref lists during abortable preclean phase") \ 194160484Sobrien \ 194260484Sobrien product(bool, CMSPrecleanSurvivors1, false, \ 194360484Sobrien "Preclean survivors during (initial) preclean phase") \ 194460484Sobrien \ 194560484Sobrien product(bool, CMSPrecleanSurvivors2, true, \ 194660484Sobrien "Preclean survivors during abortable preclean phase") \ 194760484Sobrien \ 194860484Sobrien product(uintx, CMSPrecleanThreshold, 1000, \ 194960484Sobrien "Do not iterate again if number of dirty cards is less than this")\ 195060484Sobrien range(100, max_uintx) \ 195160484Sobrien \ 195260484Sobrien product(bool, CMSCleanOnEnter, true, \ 195360484Sobrien "Clean-on-enter optimization for reducing number of dirty cards") \ 195460484Sobrien \ 195560484Sobrien product(uintx, CMSRemarkVerifyVariant, 1, \ 195660484Sobrien "Choose variant (1,2) of verification following remark") \ 195760484Sobrien range(1, 2) \ 195860484Sobrien \ 195960484Sobrien product(size_t, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 196060484Sobrien "If Eden size is below this, do not try to schedule remark") \ 196160484Sobrien \ 196260484Sobrien product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 196360484Sobrien "The Eden occupancy percentage (0-100) at which " \ 196460484Sobrien "to try and schedule remark pause") \ 196560484Sobrien range(0, 100) \ 196660484Sobrien \ 196760484Sobrien product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 196860484Sobrien "Start sampling eden top at least before young gen " \ 196960484Sobrien "occupancy reaches 1/<ratio> of the size at which " \ 197060484Sobrien "we plan to schedule remark") \ 197160484Sobrien range(1, max_uintx) \ 197260484Sobrien \ 197360484Sobrien product(uintx, CMSSamplingGrain, 16*K, \ 197460484Sobrien "The minimum distance between eden samples for CMS (see above)") \ 197560484Sobrien range(1, max_uintx) \ 197660484Sobrien \ 197760484Sobrien product(bool, CMSScavengeBeforeRemark, false, \ 197860484Sobrien "Attempt scavenge before the CMS remark step") \ 197960484Sobrien \ 198060484Sobrien develop(bool, CMSTraceSweeper, false, \ 198160484Sobrien "Trace some actions of the CMS sweeper") \ 198260484Sobrien \ 198360484Sobrien product(uintx, CMSWorkQueueDrainThreshold, 10, \ 198460484Sobrien "Don't drain below this size per parallel worker/thief") \ 198560484Sobrien \ 198660484Sobrien manageable(intx, CMSWaitDuration, 2000, \ 198760484Sobrien "Time in milliseconds that CMS thread waits for young GC") \ 198860484Sobrien \ 198960484Sobrien develop(uintx, CMSCheckInterval, 1000, \ 199060484Sobrien "Interval in milliseconds that CMS thread checks if it " \ 199160484Sobrien "should start a collection cycle") \ 199260484Sobrien \ 199360484Sobrien product(bool, CMSYield, true, \ 199460484Sobrien "Yield between steps of CMS") \ 199560484Sobrien \ 199660484Sobrien product(size_t, CMSBitMapYieldQuantum, 10*M, \ 199760484Sobrien "Bitmap operations should process at most this many bits " \ 199860484Sobrien "between yields") \ 199960484Sobrien range(1, max_uintx) \ 200060484Sobrien \ 200160484Sobrien product(bool, CMSDumpAtPromotionFailure, false, \ 200260484Sobrien "Dump useful information about the state of the CMS old " \ 200360484Sobrien "generation upon a promotion failure") \ 200460484Sobrien \ 200560484Sobrien product(bool, CMSPrintChunksInDump, false, \ 200660484Sobrien "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 200760484Sobrien "more detailed information about the free chunks") \ 200860484Sobrien \ 200960484Sobrien product(bool, CMSPrintObjectsInDump, false, \ 201060484Sobrien "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 201160484Sobrien "more detailed information about the allocated objects") \ 201260484Sobrien \ 201360484Sobrien diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 201460484Sobrien "Verify that all references across the FLS boundary " \ 201560484Sobrien "are to valid objects") \ 201660484Sobrien \ 201760484Sobrien diagnostic(bool, FLSVerifyLists, false, \ 201860484Sobrien "Do lots of (expensive) FreeListSpace verification") \ 201960484Sobrien \ 202060484Sobrien diagnostic(bool, FLSVerifyIndexTable, false, \ 202160484Sobrien "Do lots of (expensive) FLS index table verification") \ 202260484Sobrien \ 202360484Sobrien develop(bool, FLSVerifyDictionary, false, \ 202460484Sobrien "Do lots of (expensive) FLS dictionary verification") \ 202560484Sobrien \ 202660484Sobrien develop(bool, VerifyBlockOffsetArray, false, \ 202760484Sobrien "Do (expensive) block offset array verification") \ 202860484Sobrien \ 202960484Sobrien diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 203060484Sobrien "Maintain _unallocated_block in BlockOffsetArray " \ 203160484Sobrien "(currently applicable only to CMS collector)") \ 203260484Sobrien \ 203360484Sobrien develop(bool, TraceCMSState, false, \ 203460484Sobrien "Trace the state of the CMS collection") \ 203560484Sobrien \ 203660484Sobrien product(intx, RefDiscoveryPolicy, 0, \ 203760484Sobrien "Select type of reference discovery policy: " \ 203860484Sobrien "reference-based(0) or referent-based(1)") \ 203960484Sobrien range(ReferenceProcessor::DiscoveryPolicyMin, \ 204060484Sobrien ReferenceProcessor::DiscoveryPolicyMax) \ 204160484Sobrien \ 204260484Sobrien product(bool, ParallelRefProcEnabled, false, \ 204360484Sobrien "Enable parallel reference processing whenever possible") \ 204460484Sobrien \ 204560484Sobrien product(bool, ParallelRefProcBalancingEnabled, true, \ 204660484Sobrien "Enable balancing of reference processing queues") \ 204760484Sobrien \ 204860484Sobrien product(uintx, CMSTriggerRatio, 80, \ 204960484Sobrien "Percentage of MinHeapFreeRatio in CMS generation that is " \ 205060484Sobrien "allocated before a CMS collection cycle commences") \ 205160484Sobrien range(0, 100) \ 205260484Sobrien \ 205360484Sobrien product(uintx, CMSBootstrapOccupancy, 50, \ 205460484Sobrien "Percentage CMS generation occupancy at which to " \ 205560484Sobrien "initiate CMS collection for bootstrapping collection stats") \ 205660484Sobrien range(0, 100) \ 205760484Sobrien \ 205860484Sobrien product(intx, CMSInitiatingOccupancyFraction, -1, \ 205960484Sobrien "Percentage CMS generation occupancy to start a CMS collection " \ 206060484Sobrien "cycle. A negative value means that CMSTriggerRatio is used") \ 206160484Sobrien range(min_intx, 100) \ 206260484Sobrien \ 206360484Sobrien product(uintx, InitiatingHeapOccupancyPercent, 45, \ 206460484Sobrien "Percentage of the (entire) heap occupancy to start a " \ 206560484Sobrien "concurrent GC cycle. It is used by GCs that trigger a " \ 206660484Sobrien "concurrent GC cycle based on the occupancy of the entire heap, " \ 206760484Sobrien "not just one of the generations (e.g., G1). A value of 0 " \ 206860484Sobrien "denotes 'do constant GC cycles'.") \ 206960484Sobrien range(0, 100) \ 207060484Sobrien \ 207160484Sobrien manageable(intx, CMSTriggerInterval, -1, \ 207260484Sobrien "Commence a CMS collection cycle (at least) every so many " \ 207360484Sobrien "milliseconds (0 permanently, -1 disabled)") \ 207460484Sobrien range(-1, max_intx) \ 207560484Sobrien \ 207660484Sobrien product(bool, UseCMSInitiatingOccupancyOnly, false, \ 207760484Sobrien "Only use occupancy as a criterion for starting a CMS collection")\ 207860484Sobrien \ 207960484Sobrien product(uintx, CMSIsTooFullPercentage, 98, \ 208060484Sobrien "An absolute ceiling above which CMS will always consider the " \ 208160484Sobrien "unloading of classes when class unloading is enabled") \ 208260484Sobrien range(0, 100) \ 208360484Sobrien \ 208460484Sobrien develop(bool, CMSTestInFreeList, false, \ 208560484Sobrien "Check if the coalesced range is already in the " \ 208660484Sobrien "free lists as claimed") \ 208760484Sobrien \ 208860484Sobrien notproduct(bool, CMSVerifyReturnedBytes, false, \ 208960484Sobrien "Check that all the garbage collected was returned to the " \ 209060484Sobrien "free lists") \ 209160484Sobrien \ 209260484Sobrien notproduct(bool, ScavengeALot, false, \ 209360484Sobrien "Force scavenge at every Nth exit from the runtime system " \ 209460484Sobrien "(N=ScavengeALotInterval)") \ 209560484Sobrien \ 209660484Sobrien develop(bool, FullGCALot, false, \ 209760484Sobrien "Force full gc at every Nth exit from the runtime system " \ 209860484Sobrien "(N=FullGCALotInterval)") \ 209960484Sobrien \ 210060484Sobrien notproduct(bool, GCALotAtAllSafepoints, false, \ 210160484Sobrien "Enforce ScavengeALot/GCALot at all potential safepoints") \ 210260484Sobrien \ 210360484Sobrien product(bool, PrintPromotionFailure, false, \ 210460484Sobrien "Print additional diagnostic information following " \ 210560484Sobrien "promotion failure") \ 210660484Sobrien \ 210760484Sobrien notproduct(bool, PromotionFailureALot, false, \ 210860484Sobrien "Use promotion failure handling on every youngest generation " \ 210960484Sobrien "collection") \ 211060484Sobrien \ 211160484Sobrien develop(uintx, PromotionFailureALotCount, 1000, \ 211260484Sobrien "Number of promotion failures occurring at PLAB " \ 211360484Sobrien "refill attempts (ParNew) or promotion attempts " \ 211460484Sobrien "(other young collectors)") \ 211560484Sobrien \ 211660484Sobrien develop(uintx, PromotionFailureALotInterval, 5, \ 211760484Sobrien "Total collections between promotion failures a lot") \ 211860484Sobrien \ 211960484Sobrien experimental(uintx, WorkStealingSleepMillis, 1, \ 212060484Sobrien "Sleep time when sleep is used for yields") \ 212160484Sobrien \ 212260484Sobrien experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 212360484Sobrien "Number of yields before a sleep is done during work stealing") \ 212460484Sobrien \ 212560484Sobrien experimental(uintx, WorkStealingHardSpins, 4096, \ 212660484Sobrien "Number of iterations in a spin loop between checks on " \ 212760484Sobrien "time out of hard spin") \ 212860484Sobrien \ 212960484Sobrien experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 213060484Sobrien "Ratio of hard spins to calls to yield") \ 213160484Sobrien \ 213260484Sobrien develop(uintx, ObjArrayMarkingStride, 512, \ 213360484Sobrien "Number of object array elements to push onto the marking stack " \ 213460484Sobrien "before pushing a continuation entry") \ 213560484Sobrien \ 213660484Sobrien develop(bool, MetadataAllocationFailALot, false, \ 213760484Sobrien "Fail metadata allocations at intervals controlled by " \ 213860484Sobrien "MetadataAllocationFailALotInterval") \ 213960484Sobrien \ 214060484Sobrien develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 214160484Sobrien "Metadata allocation failure a lot interval") \ 214260484Sobrien \ 214360484Sobrien develop(bool, TraceMetadataChunkAllocation, false, \ 214460484Sobrien "Trace chunk metadata allocations") \ 214560484Sobrien \ 214660484Sobrien product(bool, TraceMetadataHumongousAllocation, false, \ 214760484Sobrien "Trace humongous metadata allocations") \ 214860484Sobrien \ 214960484Sobrien develop(bool, TraceMetavirtualspaceAllocation, false, \ 215060484Sobrien "Trace virtual space metadata allocations") \ 215160484Sobrien \ 215260484Sobrien notproduct(bool, ExecuteInternalVMTests, false, \ 215360484Sobrien "Enable execution of internal VM tests") \ 215460484Sobrien \ 215560484Sobrien notproduct(bool, VerboseInternalVMTests, false, \ 215660484Sobrien "Turn on logging for internal VM tests.") \ 215760484Sobrien \ 215860484Sobrien product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 215960484Sobrien \ 216060484Sobrien product_pd(bool, ResizeTLAB, \ 216160484Sobrien "Dynamically resize TLAB size for threads") \ 216260484Sobrien \ 216360484Sobrien product(bool, ZeroTLAB, false, \ 216460484Sobrien "Zero out the newly created TLAB") \ 216560484Sobrien \ 216660484Sobrien product(bool, FastTLABRefill, true, \ 216760484Sobrien "Use fast TLAB refill code") \ 216860484Sobrien \ 216960484Sobrien product(bool, PrintTLAB, false, \ 217060484Sobrien "Print various TLAB related information") \ 217160484Sobrien \ 217260484Sobrien product(bool, TLABStats, true, \ 217360484Sobrien "Provide more detailed and expensive TLAB statistics " \ 217460484Sobrien "(with PrintTLAB)") \ 217560484Sobrien \ 217660484Sobrien product_pd(bool, NeverActAsServerClassMachine, \ 217760484Sobrien "Never act like a server-class machine") \ 217860484Sobrien \ 217960484Sobrien product(bool, AlwaysActAsServerClassMachine, false, \ 218060484Sobrien "Always act like a server-class machine") \ 218160484Sobrien \ 218260484Sobrien product_pd(uint64_t, MaxRAM, \ 218360484Sobrien "Real memory size (in bytes) used to set maximum heap size") \ 218460484Sobrien \ 218560484Sobrien product(size_t, ErgoHeapSizeLimit, 0, \ 218660484Sobrien "Maximum ergonomically set heap size (in bytes); zero means use " \ 218760484Sobrien "MaxRAM / MaxRAMFraction") \ 218860484Sobrien \ 218960484Sobrien product(uintx, MaxRAMFraction, 4, \ 219060484Sobrien "Maximum fraction (1/n) of real memory used for maximum heap " \ 219160484Sobrien "size") \ 219260484Sobrien range(1, max_uintx) \ 219360484Sobrien \ 219460484Sobrien product(uintx, DefaultMaxRAMFraction, 4, \ 219560484Sobrien "Maximum fraction (1/n) of real memory used for maximum heap " \ 219660484Sobrien "size; deprecated: to be renamed to MaxRAMFraction") \ 219760484Sobrien range(1, max_uintx) \ 219860484Sobrien \ 219960484Sobrien product(uintx, MinRAMFraction, 2, \ 220060484Sobrien "Minimum fraction (1/n) of real memory used for maximum heap " \ 220160484Sobrien "size on systems with small physical memory size") \ 220260484Sobrien range(1, max_uintx) \ 220360484Sobrien \ 220460484Sobrien product(uintx, InitialRAMFraction, 64, \ 220560484Sobrien "Fraction (1/n) of real memory used for initial heap size") \ 220660484Sobrien range(1, max_uintx) \ 220760484Sobrien \ 220860484Sobrien develop(uintx, MaxVirtMemFraction, 2, \ 220960484Sobrien "Maximum fraction (1/n) of virtual memory used for ergonomically "\ 221060484Sobrien "determining maximum heap size") \ 221160484Sobrien \ 221260484Sobrien product(bool, UseAutoGCSelectPolicy, false, \ 221360484Sobrien "Use automatic collection selection policy") \ 221460484Sobrien \ 221560484Sobrien product(uintx, AutoGCSelectPauseMillis, 5000, \ 221660484Sobrien "Automatic GC selection pause threshold in milliseconds") \ 221760484Sobrien \ 221860484Sobrien product(bool, UseAdaptiveSizePolicy, true, \ 221960484Sobrien "Use adaptive generation sizing policies") \ 222060484Sobrien \ 222160484Sobrien product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 222260484Sobrien "Use adaptive survivor sizing policies") \ 222360484Sobrien \ 222460484Sobrien product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 222560484Sobrien "Use adaptive young-old sizing policies at minor collections") \ 222660484Sobrien \ 222760484Sobrien product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 222860484Sobrien "Use adaptive young-old sizing policies at major collections") \ 222960484Sobrien \ 223060484Sobrien product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 223160484Sobrien "Include statistics from System.gc() for adaptive size policy") \ 223260484Sobrien \ 223360484Sobrien product(bool, UseAdaptiveGCBoundary, false, \ 223460484Sobrien "Allow young-old boundary to move") \ 223560484Sobrien \ 223660484Sobrien develop(bool, TraceAdaptiveGCBoundary, false, \ 223760484Sobrien "Trace young-old boundary moves") \ 223860484Sobrien \ 223960484Sobrien develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 224060484Sobrien "Resize the virtual spaces of the young or old generations") \ 224160484Sobrien \ 224260484Sobrien product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 224360484Sobrien "Policy for changing generation size for throughput goals") \ 224460484Sobrien \ 224560484Sobrien develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 224660484Sobrien "Adjust tenured generation to achieve a minor pause goal") \ 224760484Sobrien \ 224860484Sobrien develop(bool, PSAdjustYoungGenForMajorPause, false, \ 224960484Sobrien "Adjust young generation to achieve a major pause goal") \ 225060484Sobrien \ 225160484Sobrien product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 225260484Sobrien "Number of steps where heuristics is used before data is used") \ 225360484Sobrien \ 225460484Sobrien develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 225560484Sobrien "Number of collections before the adaptive sizing is started") \ 225660484Sobrien \ 225760484Sobrien product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 225860484Sobrien "Collection interval for printing information; zero means never") \ 225960484Sobrien \ 226060484Sobrien product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 226160484Sobrien "Use adaptive minimum footprint as a goal") \ 226260484Sobrien \ 226360484Sobrien product(uintx, AdaptiveSizePolicyWeight, 10, \ 226460484Sobrien "Weight given to exponential resizing, between 0 and 100") \ 226560484Sobrien range(0, 100) \ 226660484Sobrien \ 226760484Sobrien product(uintx, AdaptiveTimeWeight, 25, \ 226860484Sobrien "Weight given to time in adaptive policy, between 0 and 100") \ 226960484Sobrien range(0, 100) \ 227060484Sobrien \ 227160484Sobrien product(uintx, PausePadding, 1, \ 227260484Sobrien "How much buffer to keep for pause time") \ 227360484Sobrien \ 227460484Sobrien product(uintx, PromotedPadding, 3, \ 227560484Sobrien "How much buffer to keep for promotion failure") \ 227660484Sobrien \ 227760484Sobrien product(uintx, SurvivorPadding, 3, \ 227860484Sobrien "How much buffer to keep for survivor overflow") \ 227960484Sobrien \ 228060484Sobrien product(uintx, ThresholdTolerance, 10, \ 228160484Sobrien "Allowed collection cost difference between generations") \ 228260484Sobrien range(0, 100) \ 228360484Sobrien \ 228460484Sobrien product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 228560484Sobrien "If collection costs are within margin, reduce both by full " \ 228660484Sobrien "delta") \ 228760484Sobrien \ 228860484Sobrien product(uintx, YoungGenerationSizeIncrement, 20, \ 228960484Sobrien "Adaptive size percentage change in young generation") \ 229060484Sobrien range(0, 100) \ 229160484Sobrien \ 229260484Sobrien product(uintx, YoungGenerationSizeSupplement, 80, \ 229360484Sobrien "Supplement to YoungedGenerationSizeIncrement used at startup") \ 229460484Sobrien range(0, 100) \ 229560484Sobrien \ 229660484Sobrien product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 229760484Sobrien "Decay factor to YoungedGenerationSizeSupplement") \ 229860484Sobrien range(1, max_uintx) \ 229960484Sobrien \ 230060484Sobrien product(uintx, TenuredGenerationSizeIncrement, 20, \ 230160484Sobrien "Adaptive size percentage change in tenured generation") \ 230260484Sobrien range(0, 100) \ 230360484Sobrien \ 230460484Sobrien product(uintx, TenuredGenerationSizeSupplement, 80, \ 230560484Sobrien "Supplement to TenuredGenerationSizeIncrement used at startup") \ 230660484Sobrien range(0, 100) \ 230760484Sobrien \ 230860484Sobrien product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 230960484Sobrien "Decay factor to TenuredGenerationSizeIncrement") \ 231060484Sobrien range(1, max_uintx) \ 231160484Sobrien \ 231260484Sobrien product(uintx, MaxGCPauseMillis, max_uintx, \ 231360484Sobrien "Adaptive size policy maximum GC pause time goal in millisecond, "\ 231460484Sobrien "or (G1 Only) the maximum GC time per MMU time slice") \ 231560484Sobrien \ 231660484Sobrien product(uintx, GCPauseIntervalMillis, 0, \ 231760484Sobrien "Time slice for MMU specification") \ 231860484Sobrien \ 231960484Sobrien product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 232060484Sobrien "Adaptive size policy maximum GC minor pause time goal " \ 232160484Sobrien "in millisecond") \ 232260484Sobrien \ 232360484Sobrien product(uintx, GCTimeRatio, 99, \ 232460484Sobrien "Adaptive size policy application time to GC time ratio") \ 232560484Sobrien \ 232660484Sobrien product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 232760484Sobrien "Adaptive size scale down factor for shrinking") \ 232860484Sobrien range(1, max_uintx) \ 232960484Sobrien \ 233060484Sobrien product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 233160484Sobrien "Adaptive size decays the major cost for long major intervals") \ 233260484Sobrien \ 233360484Sobrien product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 233460484Sobrien "Time scale over which major costs decay") \ 233560484Sobrien \ 233660484Sobrien product(uintx, MinSurvivorRatio, 3, \ 233760484Sobrien "Minimum ratio of young generation/survivor space size") \ 233860484Sobrien \ 233960484Sobrien product(uintx, InitialSurvivorRatio, 8, \ 234060484Sobrien "Initial ratio of young generation/survivor space size") \ 234160484Sobrien \ 234260484Sobrien product(size_t, BaseFootPrintEstimate, 256*M, \ 234360484Sobrien "Estimate of footprint other than Java Heap") \ 234460484Sobrien \ 234560484Sobrien product(bool, UseGCOverheadLimit, true, \ 234660484Sobrien "Use policy to limit of proportion of time spent in GC " \ 234760484Sobrien "before an OutOfMemory error is thrown") \ 234860484Sobrien \ 234960484Sobrien product(uintx, GCTimeLimit, 98, \ 235060484Sobrien "Limit of the proportion of time spent in GC before " \ 235160484Sobrien "an OutOfMemoryError is thrown (used with GCHeapFreeLimit)") \ 235260484Sobrien range(0, 100) \ 235360484Sobrien \ 235460484Sobrien product(uintx, GCHeapFreeLimit, 2, \ 235560484Sobrien "Minimum percentage of free space after a full GC before an " \ 235660484Sobrien "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 235760484Sobrien range(0, 100) \ 235860484Sobrien \ 235960484Sobrien develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 236060484Sobrien "Number of consecutive collections before gc time limit fires") \ 236160484Sobrien \ 236260484Sobrien product(bool, PrintAdaptiveSizePolicy, false, \ 236360484Sobrien "Print information about AdaptiveSizePolicy") \ 236460484Sobrien \ 236560484Sobrien product(intx, PrefetchCopyIntervalInBytes, -1, \ 236660484Sobrien "How far ahead to prefetch destination area (<= 0 means off)") \ 236760484Sobrien \ 236860484Sobrien product(intx, PrefetchScanIntervalInBytes, -1, \ 236960484Sobrien "How far ahead to prefetch scan area (<= 0 means off)") \ 237060484Sobrien \ 237160484Sobrien product(intx, PrefetchFieldsAhead, -1, \ 237260484Sobrien "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 237360484Sobrien \ 237460484Sobrien diagnostic(bool, VerifySilently, false, \ 237560484Sobrien "Do not print the verification progress") \ 237660484Sobrien \ 237760484Sobrien diagnostic(bool, VerifyDuringStartup, false, \ 237860484Sobrien "Verify memory system before executing any Java code " \ 237960484Sobrien "during VM initialization") \ 238060484Sobrien \ 238160484Sobrien diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 238289857Sobrien "Verify system before exiting") \ 238389857Sobrien \ 238489857Sobrien diagnostic(bool, VerifyBeforeGC, false, \ 238560484Sobrien "Verify memory system before GC") \ 238660484Sobrien \ 238760484Sobrien diagnostic(bool, VerifyAfterGC, false, \ 238860484Sobrien "Verify memory system after GC") \ 238960484Sobrien \ 239060484Sobrien diagnostic(bool, VerifyDuringGC, false, \ 239160484Sobrien "Verify memory system during GC (between phases)") \ 239260484Sobrien \ 239360484Sobrien diagnostic(bool, GCParallelVerificationEnabled, true, \ 239460484Sobrien "Enable parallel memory system verification") \ 239560484Sobrien \ 239660484Sobrien diagnostic(bool, DeferInitialCardMark, false, \ 239760484Sobrien "When +ReduceInitialCardMarks, explicitly defer any that " \ 239860484Sobrien "may arise from new_pre_store_barrier") \ 239960484Sobrien \ 240060484Sobrien product(bool, UseCondCardMark, false, \ 240160484Sobrien "Check for already marked card before updating card table") \ 240260484Sobrien \ 240360484Sobrien diagnostic(bool, VerifyRememberedSets, false, \ 240460484Sobrien "Verify GC remembered sets") \ 240560484Sobrien \ 240660484Sobrien diagnostic(bool, VerifyObjectStartArray, true, \ 240760484Sobrien "Verify GC object start array if verify before/after") \ 240860484Sobrien \ 240960484Sobrien product(bool, DisableExplicitGC, false, \ 241060484Sobrien "Ignore calls to System.gc()") \ 241160484Sobrien \ 241260484Sobrien notproduct(bool, CheckMemoryInitialization, false, \ 241360484Sobrien "Check memory initialization") \ 241460484Sobrien \ 241560484Sobrien diagnostic(bool, BindCMSThreadToCPU, false, \ 241660484Sobrien "Bind CMS Thread to CPU if possible") \ 241760484Sobrien \ 241860484Sobrien diagnostic(uintx, CPUForCMSThread, 0, \ 241960484Sobrien "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 242060484Sobrien \ 242160484Sobrien product(bool, BindGCTaskThreadsToCPUs, false, \ 242260484Sobrien "Bind GCTaskThreads to CPUs if possible") \ 242360484Sobrien \ 242460484Sobrien product(bool, UseGCTaskAffinity, false, \ 242560484Sobrien "Use worker affinity when asking for GCTasks") \ 242660484Sobrien \ 242760484Sobrien product(uintx, ProcessDistributionStride, 4, \ 242860484Sobrien "Stride through processors when distributing processes") \ 242960484Sobrien \ 243060484Sobrien product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 243160484Sobrien "Number of times the coordinator GC thread will sleep while " \ 243260484Sobrien "yielding before giving up and resuming GC") \ 243360484Sobrien \ 243460484Sobrien product(uintx, CMSYieldSleepCount, 0, \ 243560484Sobrien "Number of times a GC thread (minus the coordinator) " \ 243660484Sobrien "will sleep while yielding before giving up and resuming GC") \ 243760484Sobrien \ 243860484Sobrien /* gc tracing */ \ 243960484Sobrien manageable(bool, PrintGC, false, \ 244060484Sobrien "Print message at garbage collection") \ 244160484Sobrien \ 244260484Sobrien manageable(bool, PrintGCDetails, false, \ 244360484Sobrien "Print more details at garbage collection") \ 244460484Sobrien \ 244560484Sobrien manageable(bool, PrintGCDateStamps, false, \ 244660484Sobrien "Print date stamps at garbage collection") \ 244760484Sobrien \ 244860484Sobrien manageable(bool, PrintGCTimeStamps, false, \ 244960484Sobrien "Print timestamps at garbage collection") \ 245060484Sobrien \ 245160484Sobrien manageable(bool, PrintGCID, true, \ 245260484Sobrien "Print an identifier for each garbage collection") \ 245360484Sobrien \ 245460484Sobrien product(bool, PrintGCTaskTimeStamps, false, \ 245560484Sobrien "Print timestamps for individual gc worker thread tasks") \ 245660484Sobrien \ 245760484Sobrien develop(intx, ConcGCYieldTimeout, 0, \ 245860484Sobrien "If non-zero, assert that GC threads yield within this " \ 245960484Sobrien "number of milliseconds") \ 246060484Sobrien \ 246160484Sobrien product(bool, PrintReferenceGC, false, \ 246260484Sobrien "Print times spent handling reference objects during GC " \ 246360484Sobrien "(enabled only when PrintGCDetails)") \ 246460484Sobrien \ 246560484Sobrien develop(bool, TraceReferenceGC, false, \ 246660484Sobrien "Trace handling of soft/weak/final/phantom references") \ 246760484Sobrien \ 246860484Sobrien develop(bool, TraceFinalizerRegistration, false, \ 246960484Sobrien "Trace registration of final references") \ 247060484Sobrien \ 247160484Sobrien notproduct(bool, TraceScavenge, false, \ 247260484Sobrien "Trace scavenge") \ 247360484Sobrien \ 247460484Sobrien product(bool, IgnoreEmptyClassPaths, false, \ 247560484Sobrien "Ignore empty path elements in -classpath") \ 247660484Sobrien \ 247760484Sobrien product(bool, TraceClassPaths, false, \ 247860484Sobrien "Trace processing of class paths") \ 247960484Sobrien \ 248060484Sobrien product_rw(bool, TraceClassLoading, false, \ 248160484Sobrien "Trace all classes loaded") \ 248260484Sobrien \ 248360484Sobrien product(bool, TraceClassLoadingPreorder, false, \ 248460484Sobrien "Trace all classes loaded in order referenced (not loaded)") \ 248560484Sobrien \ 248660484Sobrien product_rw(bool, TraceClassUnloading, false, \ 248760484Sobrien "Trace unloading of classes") \ 248860484Sobrien \ 248960484Sobrien product_rw(bool, TraceLoaderConstraints, false, \ 249060484Sobrien "Trace loader constraints") \ 249160484Sobrien \ 249260484Sobrien develop(bool, TraceClassLoaderData, false, \ 249360484Sobrien "Trace class loader loader_data lifetime") \ 249460484Sobrien \ 249560484Sobrien product(size_t, InitialBootClassLoaderMetaspaceSize, \ 249660484Sobrien NOT_LP64(2200*K) LP64_ONLY(4*M), \ 249760484Sobrien "Initial size of the boot class loader data metaspace") \ 249860484Sobrien \ 249960484Sobrien product(bool, TraceYoungGenTime, false, \ 250060484Sobrien "Trace accumulated time for young collection") \ 250160484Sobrien \ 250260484Sobrien product(bool, TraceOldGenTime, false, \ 250360484Sobrien "Trace accumulated time for old collection") \ 250460484Sobrien \ 250560484Sobrien product(bool, PrintTenuringDistribution, false, \ 250660484Sobrien "Print tenuring age information") \ 250760484Sobrien \ 250860484Sobrien product_rw(bool, PrintHeapAtGC, false, \ 250960484Sobrien "Print heap layout before and after each GC") \ 251060484Sobrien \ 251160484Sobrien product_rw(bool, PrintHeapAtGCExtended, false, \ 251260484Sobrien "Print extended information about the layout of the heap " \ 251360484Sobrien "when -XX:+PrintHeapAtGC is set") \ 251460484Sobrien \ 251560484Sobrien product(bool, PrintHeapAtSIGBREAK, true, \ 251660484Sobrien "Print heap layout in response to SIGBREAK") \ 251760484Sobrien \ 251860484Sobrien manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 251960484Sobrien "Print a class histogram before any major stop-world GC") \ 252060484Sobrien \ 252160484Sobrien manageable(bool, PrintClassHistogramAfterFullGC, false, \ 252260484Sobrien "Print a class histogram after any major stop-world GC") \ 252360484Sobrien \ 252460484Sobrien manageable(bool, PrintClassHistogram, false, \ 252560484Sobrien "Print a histogram of class instances") \ 252660484Sobrien \ 252760484Sobrien develop(bool, TraceWorkGang, false, \ 252860484Sobrien "Trace activities of work gangs") \ 252960484Sobrien \ 253060484Sobrien product(bool, TraceParallelOldGCTasks, false, \ 253160484Sobrien "Trace multithreaded GC activity") \ 253260484Sobrien \ 253360484Sobrien develop(bool, TraceBlockOffsetTable, false, \ 253460484Sobrien "Print BlockOffsetTable maps") \ 253560484Sobrien \ 253660484Sobrien develop(bool, TraceCardTableModRefBS, false, \ 253760484Sobrien "Print CardTableModRefBS maps") \ 253860484Sobrien \ 253960484Sobrien develop(bool, TraceGCTaskManager, false, \ 254060484Sobrien "Trace actions of the GC task manager") \ 254160484Sobrien \ 254260484Sobrien develop(bool, TraceGCTaskQueue, false, \ 254360484Sobrien "Trace actions of the GC task queues") \ 254460484Sobrien \ 254560484Sobrien diagnostic(bool, TraceGCTaskThread, false, \ 254660484Sobrien "Trace actions of the GC task threads") \ 254760484Sobrien \ 254860484Sobrien product(bool, PrintParallelOldGCPhaseTimes, false, \ 254960484Sobrien "Print the time taken by each phase in ParallelOldGC " \ 255060484Sobrien "(PrintGCDetails must also be enabled)") \ 255160484Sobrien \ 255260484Sobrien develop(bool, TraceParallelOldGCMarkingPhase, false, \ 255360484Sobrien "Trace marking phase in ParallelOldGC") \ 255460484Sobrien \ 255560484Sobrien develop(bool, TraceParallelOldGCSummaryPhase, false, \ 255660484Sobrien "Trace summary phase in ParallelOldGC") \ 255760484Sobrien \ 255860484Sobrien develop(bool, TraceParallelOldGCCompactionPhase, false, \ 255960484Sobrien "Trace compaction phase in ParallelOldGC") \ 256060484Sobrien \ 256160484Sobrien develop(bool, TraceParallelOldGCDensePrefix, false, \ 256260484Sobrien "Trace dense prefix computation for ParallelOldGC") \ 256389857Sobrien \ 256460484Sobrien develop(bool, IgnoreLibthreadGPFault, false, \ 256560484Sobrien "Suppress workaround for libthread GP fault") \ 256660484Sobrien \ 256760484Sobrien product(bool, PrintJNIGCStalls, false, \ 256860484Sobrien "Print diagnostic message when GC is stalled " \ 256960484Sobrien "by JNI critical section") \ 257060484Sobrien \ 257160484Sobrien experimental(double, ObjectCountCutOffPercent, 0.5, \ 257260484Sobrien "The percentage of the used heap that the instances of a class " \ 257360484Sobrien "must occupy for the class to generate a trace event") \ 257460484Sobrien \ 257560484Sobrien /* GC log rotation setting */ \ 257660484Sobrien \ 257760484Sobrien product(bool, UseGCLogFileRotation, false, \ 257860484Sobrien "Rotate gclog files (for long running applications). It requires "\ 257960484Sobrien "-Xloggc:<filename>") \ 258060484Sobrien \ 258160484Sobrien product(uintx, NumberOfGCLogFiles, 0, \ 258260484Sobrien "Number of gclog files in rotation " \ 258360484Sobrien "(default: 0, no rotation)") \ 258460484Sobrien \ 258560484Sobrien product(size_t, GCLogFileSize, 8*K, \ 258660484Sobrien "GC log file size, requires UseGCLogFileRotation. " \ 258760484Sobrien "Set to 0 to only trigger rotation via jcmd") \ 258860484Sobrien \ 258960484Sobrien /* JVMTI heap profiling */ \ 259060484Sobrien \ 259160484Sobrien diagnostic(bool, TraceJVMTIObjectTagging, false, \ 259260484Sobrien "Trace JVMTI object tagging calls") \ 259360484Sobrien \ 259460484Sobrien diagnostic(bool, VerifyBeforeIteration, false, \ 259560484Sobrien "Verify memory system before JVMTI iteration") \ 259660484Sobrien \ 259760484Sobrien /* compiler interface */ \ 259860484Sobrien \ 259960484Sobrien develop(bool, CIPrintCompilerName, false, \ 260060484Sobrien "when CIPrint is active, print the name of the active compiler") \ 260160484Sobrien \ 260260484Sobrien diagnostic(bool, CIPrintCompileQueue, false, \ 260360484Sobrien "display the contents of the compile queue whenever a " \ 260460484Sobrien "compilation is enqueued") \ 260560484Sobrien \ 260660484Sobrien develop(bool, CIPrintRequests, false, \ 260760484Sobrien "display every request for compilation") \ 260860484Sobrien \ 260960484Sobrien product(bool, CITime, false, \ 261060484Sobrien "collect timing information for compilation") \ 261160484Sobrien \ 261260484Sobrien develop(bool, CITimeVerbose, false, \ 261360484Sobrien "be more verbose in compilation timings") \ 261460484Sobrien \ 261560484Sobrien develop(bool, CITimeEach, false, \ 261660484Sobrien "display timing information after each successful compilation") \ 261760484Sobrien \ 261860484Sobrien develop(bool, CICountOSR, false, \ 261960484Sobrien "use a separate counter when assigning ids to osr compilations") \ 262060484Sobrien \ 262160484Sobrien develop(bool, CICompileNatives, true, \ 262260484Sobrien "compile native methods if supported by the compiler") \ 262360484Sobrien \ 262460484Sobrien develop_pd(bool, CICompileOSR, \ 262560484Sobrien "compile on stack replacement methods if supported by the " \ 262660484Sobrien "compiler") \ 262760484Sobrien \ 262860484Sobrien develop(bool, CIPrintMethodCodes, false, \ 262960484Sobrien "print method bytecodes of the compiled code") \ 263060484Sobrien \ 263160484Sobrien develop(bool, CIPrintTypeFlow, false, \ 263260484Sobrien "print the results of ciTypeFlow analysis") \ 263360484Sobrien \ 263460484Sobrien develop(bool, CITraceTypeFlow, false, \ 263560484Sobrien "detailed per-bytecode tracing of ciTypeFlow analysis") \ 263660484Sobrien \ 263760484Sobrien develop(intx, OSROnlyBCI, -1, \ 263860484Sobrien "OSR only at this bci. Negative values mean exclude that bci") \ 263960484Sobrien \ 264060484Sobrien /* compiler */ \ 264160484Sobrien \ 264260484Sobrien /* notice: the max range value here is max_jint, not max_intx */ \ 264360484Sobrien /* because of overflow issue */ \ 264460484Sobrien product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 264560484Sobrien "Number of compiler threads to run") \ 264660484Sobrien range((intx)Arguments::get_min_number_of_compiler_threads(), \ 264760484Sobrien max_jint) \ 264860484Sobrien \ 264960484Sobrien product(intx, CompilationPolicyChoice, 0, \ 265060484Sobrien "which compilation policy (0-3)") \ 265160484Sobrien range(0, 3) \ 265260484Sobrien \ 265360484Sobrien develop(bool, UseStackBanging, true, \ 265460484Sobrien "use stack banging for stack overflow checks (required for " \ 265560484Sobrien "proper StackOverflow handling; disable only to measure cost " \ 265660484Sobrien "of stackbanging)") \ 265760484Sobrien \ 265860484Sobrien develop(bool, UseStrictFP, true, \ 265960484Sobrien "use strict fp if modifier strictfp is set") \ 266060484Sobrien \ 266160484Sobrien develop(bool, GenerateSynchronizationCode, true, \ 266260484Sobrien "generate locking/unlocking code for synchronized methods and " \ 266360484Sobrien "monitors") \ 266460484Sobrien \ 266560484Sobrien develop(bool, GenerateCompilerNullChecks, true, \ 266660484Sobrien "Generate explicit null checks for loads/stores/calls") \ 266760484Sobrien \ 266860484Sobrien develop(bool, GenerateRangeChecks, true, \ 266960484Sobrien "Generate range checks for array accesses") \ 267060484Sobrien \ 267160484Sobrien develop_pd(bool, ImplicitNullChecks, \ 267260484Sobrien "Generate code for implicit null checks") \ 267360484Sobrien \ 267460484Sobrien product_pd(bool, TrapBasedNullChecks, \ 267589857Sobrien "Generate code for null checks that uses a cmp and trap " \ 267660484Sobrien "instruction raising SIGTRAP. This is only used if an access to" \ 267760484Sobrien "null (+offset) will not raise a SIGSEGV, i.e.," \ 267860484Sobrien "ImplicitNullChecks don't work (PPC64).") \ 267960484Sobrien \ 268060484Sobrien product(bool, PrintSafepointStatistics, false, \ 268160484Sobrien "Print statistics about safepoint synchronization") \ 268260484Sobrien \ 268360484Sobrien product(intx, PrintSafepointStatisticsCount, 300, \ 268460484Sobrien "Total number of safepoint statistics collected " \ 268560484Sobrien "before printing them out") \ 268660484Sobrien \ 268760484Sobrien product(intx, PrintSafepointStatisticsTimeout, -1, \ 268860484Sobrien "Print safepoint statistics only when safepoint takes " \ 268960484Sobrien "more than PrintSafepointSatisticsTimeout in millis") \ 269060484Sobrien \ 269160484Sobrien product(bool, TraceSafepointCleanupTime, false, \ 269260484Sobrien "Print the break down of clean up tasks performed during " \ 269360484Sobrien "safepoint") \ 269460484Sobrien \ 269560484Sobrien product(bool, Inline, true, \ 269660484Sobrien "Enable inlining") \ 269760484Sobrien \ 269860484Sobrien product(bool, ClipInlining, true, \ 269960484Sobrien "Clip inlining if aggregate method exceeds DesiredMethodLimit") \ 270060484Sobrien \ 270160484Sobrien develop(bool, UseCHA, true, \ 270260484Sobrien "Enable CHA") \ 270360484Sobrien \ 270460484Sobrien product(bool, UseTypeProfile, true, \ 270560484Sobrien "Check interpreter profile for historically monomorphic calls") \ 270660484Sobrien \ 270760484Sobrien diagnostic(bool, PrintInlining, false, \ 270860484Sobrien "Print inlining optimizations") \ 270960484Sobrien \ 271060484Sobrien product(bool, UsePopCountInstruction, false, \ 271160484Sobrien "Use population count instruction") \ 271260484Sobrien \ 271360484Sobrien develop(bool, EagerInitialization, false, \ 271460484Sobrien "Eagerly initialize classes if possible") \ 271560484Sobrien \ 271660484Sobrien develop(bool, TraceMethodReplacement, false, \ 271760484Sobrien "Print when methods are replaced do to recompilation") \ 271860484Sobrien \ 271960484Sobrien develop(bool, PrintMethodFlushing, false, \ 272060484Sobrien "Print the nmethods being flushed") \ 272160484Sobrien \ 272260484Sobrien diagnostic(bool, PrintMethodFlushingStatistics, false, \ 272360484Sobrien "print statistics about method flushing") \ 272460484Sobrien \ 272560484Sobrien diagnostic(intx, HotMethodDetectionLimit, 100000, \ 272660484Sobrien "Number of compiled code invocations after which " \ 272760484Sobrien "the method is considered as hot by the flusher") \ 272860484Sobrien \ 272960484Sobrien diagnostic(intx, MinPassesBeforeFlush, 10, \ 273060484Sobrien "Minimum number of sweeper passes before an nmethod " \ 273160484Sobrien "can be flushed") \ 273260484Sobrien \ 273360484Sobrien product(bool, UseCodeAging, true, \ 273460484Sobrien "Insert counter to detect warm methods") \ 273560484Sobrien \ 273660484Sobrien diagnostic(bool, StressCodeAging, false, \ 273760484Sobrien "Start with counters compiled in") \ 273860484Sobrien \ 273960484Sobrien develop(bool, UseRelocIndex, false, \ 274060484Sobrien "Use an index to speed random access to relocations") \ 274160484Sobrien \ 274260484Sobrien develop(bool, StressCodeBuffers, false, \ 274360484Sobrien "Exercise code buffer expansion and other rare state changes") \ 274460484Sobrien \ 274560484Sobrien diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 274660484Sobrien "Generate extra debugging information for non-safepoints in " \ 274760484Sobrien "nmethods") \ 274860484Sobrien \ 274960484Sobrien product(bool, PrintVMOptions, false, \ 275060484Sobrien "Print flags that appeared on the command line") \ 275160484Sobrien \ 275260484Sobrien product(bool, IgnoreUnrecognizedVMOptions, false, \ 275360484Sobrien "Ignore unrecognized VM options") \ 275460484Sobrien \ 275560484Sobrien product(bool, PrintCommandLineFlags, false, \ 275660484Sobrien "Print flags specified on command line or set by ergonomics") \ 275760484Sobrien \ 275860484Sobrien product(bool, PrintFlagsInitial, false, \ 275960484Sobrien "Print all VM flags before argument processing and exit VM") \ 276060484Sobrien \ 276160484Sobrien product(bool, PrintFlagsFinal, false, \ 276260484Sobrien "Print all VM flags after argument and ergonomic processing") \ 276360484Sobrien \ 276460484Sobrien notproduct(bool, PrintFlagsWithComments, false, \ 276560484Sobrien "Print all VM flags with default values and descriptions and " \ 276660484Sobrien "exit") \ 276760484Sobrien \ 276860484Sobrien product(bool, PrintFlagsRanges, false, \ 276960484Sobrien "Print VM flags and their ranges and exit VM") \ 277060484Sobrien \ 277160484Sobrien diagnostic(bool, SerializeVMOutput, true, \ 277260484Sobrien "Use a mutex to serialize output to tty and LogFile") \ 277360484Sobrien \ 277460484Sobrien diagnostic(bool, DisplayVMOutput, true, \ 277560484Sobrien "Display all VM output on the tty, independently of LogVMOutput") \ 277660484Sobrien \ 277760484Sobrien diagnostic(bool, LogVMOutput, false, \ 277860484Sobrien "Save VM output to LogFile") \ 277960484Sobrien \ 278060484Sobrien diagnostic(ccstr, LogFile, NULL, \ 278160484Sobrien "If LogVMOutput or LogCompilation is on, save VM output to " \ 278260484Sobrien "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\ 278360484Sobrien \ 278460484Sobrien product(ccstr, ErrorFile, NULL, \ 278560484Sobrien "If an error occurs, save the error data to this file " \ 278660484Sobrien "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 278760484Sobrien \ 278860484Sobrien product(bool, DisplayVMOutputToStderr, false, \ 278960484Sobrien "If DisplayVMOutput is true, display all VM output to stderr") \ 279060484Sobrien \ 279160484Sobrien product(bool, DisplayVMOutputToStdout, false, \ 279260484Sobrien "If DisplayVMOutput is true, display all VM output to stdout") \ 279360484Sobrien \ 279460484Sobrien product(bool, UseHeavyMonitors, false, \ 279560484Sobrien "use heavyweight instead of lightweight Java monitors") \ 279660484Sobrien \ 279760484Sobrien product(bool, PrintStringTableStatistics, false, \ 279860484Sobrien "print statistics about the StringTable and SymbolTable") \ 279960484Sobrien \ 280060484Sobrien diagnostic(bool, VerifyStringTableAtExit, false, \ 280160484Sobrien "verify StringTable contents at exit") \ 280260484Sobrien \ 280360484Sobrien notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 280460484Sobrien "print histogram of the symbol table") \ 280560484Sobrien \ 280660484Sobrien notproduct(bool, ExitVMOnVerifyError, false, \ 280760484Sobrien "standard exit from VM if bytecode verify error " \ 280860484Sobrien "(only in debug mode)") \ 280960484Sobrien \ 281060484Sobrien notproduct(ccstr, AbortVMOnException, NULL, \ 281160484Sobrien "Call fatal if this exception is thrown. Example: " \ 281260484Sobrien "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 281360484Sobrien \ 281460484Sobrien notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ 281560484Sobrien "Call fatal if the exception pointed by AbortVMOnException " \ 281660484Sobrien "has this message") \ 281760484Sobrien \ 281860484Sobrien develop(bool, DebugVtables, false, \ 281960484Sobrien "add debugging code to vtable dispatch") \ 282060484Sobrien \ 282160484Sobrien develop(bool, PrintVtables, false, \ 282260484Sobrien "print vtables when printing klass") \ 282360484Sobrien \ 282460484Sobrien notproduct(bool, PrintVtableStats, false, \ 282560484Sobrien "print vtables stats at end of run") \ 282660484Sobrien \ 282760484Sobrien develop(bool, TraceCreateZombies, false, \ 282860484Sobrien "trace creation of zombie nmethods") \ 282960484Sobrien \ 283060484Sobrien notproduct(bool, IgnoreLockingAssertions, false, \ 283160484Sobrien "disable locking assertions (for speed)") \ 283260484Sobrien \ 283360484Sobrien product(bool, RangeCheckElimination, true, \ 283460484Sobrien "Eliminate range checks") \ 283560484Sobrien \ 283660484Sobrien develop_pd(bool, UncommonNullCast, \ 283760484Sobrien "track occurrences of null in casts; adjust compiler tactics") \ 283860484Sobrien \ 283960484Sobrien develop(bool, TypeProfileCasts, true, \ 284060484Sobrien "treat casts like calls for purposes of type profiling") \ 284160484Sobrien \ 284260484Sobrien develop(bool, DelayCompilationDuringStartup, true, \ 284360484Sobrien "Delay invoking the compiler until main application class is " \ 284460484Sobrien "loaded") \ 284560484Sobrien \ 284660484Sobrien develop(bool, CompileTheWorld, false, \ 284760484Sobrien "Compile all methods in all classes in bootstrap class path " \ 284860484Sobrien "(stress test)") \ 284960484Sobrien \ 285060484Sobrien develop(bool, CompileTheWorldPreloadClasses, true, \ 285160484Sobrien "Preload all classes used by a class before start loading") \ 285260484Sobrien \ 285360484Sobrien notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 285460484Sobrien "Force a safepoint every n compiles so sweeper can keep up") \ 285560484Sobrien \ 285660484Sobrien develop(bool, FillDelaySlots, true, \ 285760484Sobrien "Fill delay slots (on SPARC only)") \ 285860484Sobrien \ 285960484Sobrien develop(bool, TimeLivenessAnalysis, false, \ 286060484Sobrien "Time computation of bytecode liveness analysis") \ 286160484Sobrien \ 286260484Sobrien develop(bool, TraceLivenessGen, false, \ 286360484Sobrien "Trace the generation of liveness analysis information") \ 286460484Sobrien \ 286560484Sobrien notproduct(bool, TraceLivenessQuery, false, \ 286660484Sobrien "Trace queries of liveness analysis information") \ 286760484Sobrien \ 286860484Sobrien notproduct(bool, CollectIndexSetStatistics, false, \ 286960484Sobrien "Collect information about IndexSets") \ 287060484Sobrien \ 287160484Sobrien develop(bool, UseLoopSafepoints, true, \ 287260484Sobrien "Generate Safepoint nodes in every loop") \ 287360484Sobrien \ 287460484Sobrien develop(intx, FastAllocateSizeLimit, 128*K, \ 287560484Sobrien /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 287660484Sobrien "Inline allocations larger than this in doublewords must go slow")\ 287760484Sobrien \ 287860484Sobrien product(bool, AggressiveOpts, false, \ 287960484Sobrien "Enable aggressive optimizations - see arguments.cpp") \ 288060484Sobrien \ 288160484Sobrien product_pd(uintx, TypeProfileLevel, \ 288260484Sobrien "=XYZ, with Z: Type profiling of arguments at call; " \ 288360484Sobrien "Y: Type profiling of return value at call; " \ 288460484Sobrien "X: Type profiling of parameters to methods; " \ 288560484Sobrien "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \ 288660484Sobrien \ 288760484Sobrien product(intx, TypeProfileArgsLimit, 2, \ 288860484Sobrien "max number of call arguments to consider for type profiling") \ 288960484Sobrien \ 289060484Sobrien product(intx, TypeProfileParmsLimit, 2, \ 289160484Sobrien "max number of incoming parameters to consider for type profiling"\ 289260484Sobrien ", -1 for all") \ 289360484Sobrien \ 289460484Sobrien /* statistics */ \ 289560484Sobrien develop(bool, CountCompiledCalls, false, \ 289660484Sobrien "Count method invocations") \ 289760484Sobrien \ 289860484Sobrien notproduct(bool, CountRuntimeCalls, false, \ 289960484Sobrien "Count VM runtime calls") \ 290060484Sobrien \ 290160484Sobrien develop(bool, CountJNICalls, false, \ 290260484Sobrien "Count jni method invocations") \ 290360484Sobrien \ 290460484Sobrien notproduct(bool, CountJVMCalls, false, \ 290560484Sobrien "Count jvm method invocations") \ 290660484Sobrien \ 290760484Sobrien notproduct(bool, CountRemovableExceptions, false, \ 290860484Sobrien "Count exceptions that could be replaced by branches due to " \ 290960484Sobrien "inlining") \ 291060484Sobrien \ 291160484Sobrien notproduct(bool, ICMissHistogram, false, \ 291260484Sobrien "Produce histogram of IC misses") \ 291360484Sobrien \ 291460484Sobrien notproduct(bool, PrintClassStatistics, false, \ 291560484Sobrien "Print class statistics at end of run") \ 291660484Sobrien \ 291760484Sobrien notproduct(bool, PrintMethodStatistics, false, \ 291860484Sobrien "Print method statistics at end of run") \ 291960484Sobrien \ 292060484Sobrien /* interpreter */ \ 292160484Sobrien develop(bool, ClearInterpreterLocals, false, \ 292260484Sobrien "Always clear local variables of interpreter activations upon " \ 292360484Sobrien "entry") \ 292460484Sobrien \ 292560484Sobrien product_pd(bool, RewriteBytecodes, \ 292660484Sobrien "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 292760484Sobrien \ 292860484Sobrien product_pd(bool, RewriteFrequentPairs, \ 292960484Sobrien "Rewrite frequently used bytecode pairs into a single bytecode") \ 293060484Sobrien \ 293160484Sobrien diagnostic(bool, PrintInterpreter, false, \ 293260484Sobrien "Print the generated interpreter code") \ 293360484Sobrien \ 293460484Sobrien product(bool, UseInterpreter, true, \ 293560484Sobrien "Use interpreter for non-compiled methods") \ 293660484Sobrien \ 293760484Sobrien develop(bool, UseFastSignatureHandlers, true, \ 293860484Sobrien "Use fast signature handlers for native calls") \ 293960484Sobrien \ 294060484Sobrien product(bool, UseLoopCounter, true, \ 294160484Sobrien "Increment invocation counter on backward branch") \ 294260484Sobrien \ 294360484Sobrien product_pd(bool, UseOnStackReplacement, \ 294460484Sobrien "Use on stack replacement, calls runtime if invoc. counter " \ 294560484Sobrien "overflows in loop") \ 294660484Sobrien \ 294760484Sobrien notproduct(bool, TraceOnStackReplacement, false, \ 294860484Sobrien "Trace on stack replacement") \ 294960484Sobrien \ 295060484Sobrien product_pd(bool, PreferInterpreterNativeStubs, \ 295160484Sobrien "Use always interpreter stubs for native methods invoked via " \ 295260484Sobrien "interpreter") \ 295360484Sobrien \ 295460484Sobrien develop(bool, CountBytecodes, false, \ 295560484Sobrien "Count number of bytecodes executed") \ 295660484Sobrien \ 295760484Sobrien develop(bool, PrintBytecodeHistogram, false, \ 295860484Sobrien "Print histogram of the executed bytecodes") \ 295960484Sobrien \ 296060484Sobrien develop(bool, PrintBytecodePairHistogram, false, \ 296160484Sobrien "Print histogram of the executed bytecode pairs") \ 296260484Sobrien \ 296360484Sobrien diagnostic(bool, PrintSignatureHandlers, false, \ 296460484Sobrien "Print code generated for native method signature handlers") \ 296560484Sobrien \ 296660484Sobrien develop(bool, VerifyOops, false, \ 296760484Sobrien "Do plausibility checks for oops") \ 296860484Sobrien \ 296960484Sobrien develop(bool, CheckUnhandledOops, false, \ 297060484Sobrien "Check for unhandled oops in VM code") \ 297160484Sobrien \ 297260484Sobrien develop(bool, VerifyJNIFields, trueInDebug, \ 297360484Sobrien "Verify jfieldIDs for instance fields") \ 297460484Sobrien \ 297560484Sobrien notproduct(bool, VerifyJNIEnvThread, false, \ 297660484Sobrien "Verify JNIEnv.thread == Thread::current() when entering VM " \ 297760484Sobrien "from JNI") \ 297860484Sobrien \ 297960484Sobrien develop(bool, VerifyFPU, false, \ 298060484Sobrien "Verify FPU state (check for NaN's, etc.)") \ 298160484Sobrien \ 298260484Sobrien develop(bool, VerifyThread, false, \ 298360484Sobrien "Watch the thread register for corruption (SPARC only)") \ 298460484Sobrien \ 298560484Sobrien develop(bool, VerifyActivationFrameSize, false, \ 298660484Sobrien "Verify that activation frame didn't become smaller than its " \ 298760484Sobrien "minimal size") \ 298860484Sobrien \ 298960484Sobrien develop(bool, TraceFrequencyInlining, false, \ 299060484Sobrien "Trace frequency based inlining") \ 299160484Sobrien \ 299260484Sobrien develop_pd(bool, InlineIntrinsics, \ 299360484Sobrien "Inline intrinsics that can be statically resolved") \ 299460484Sobrien \ 299560484Sobrien product_pd(bool, ProfileInterpreter, \ 299660484Sobrien "Profile at the bytecode level during interpretation") \ 299760484Sobrien \ 299860484Sobrien develop(bool, TraceProfileInterpreter, false, \ 299960484Sobrien "Trace profiling at the bytecode level during interpretation. " \ 300060484Sobrien "This outputs the profiling information collected to improve " \ 300160484Sobrien "jit compilation.") \ 300260484Sobrien \ 300360484Sobrien develop_pd(bool, ProfileTraps, \ 300460484Sobrien "Profile deoptimization traps at the bytecode level") \ 300560484Sobrien \ 300660484Sobrien product(intx, ProfileMaturityPercentage, 20, \ 300760484Sobrien "number of method invocations/branches (expressed as % of " \ 300860484Sobrien "CompileThreshold) before using the method's profile") \ 300960484Sobrien range(0, 100) \ 301060484Sobrien \ 301160484Sobrien diagnostic(bool, PrintMethodData, false, \ 301260484Sobrien "Print the results of +ProfileInterpreter at end of run") \ 301360484Sobrien \ 301460484Sobrien develop(bool, VerifyDataPointer, trueInDebug, \ 301560484Sobrien "Verify the method data pointer during interpreter profiling") \ 301660484Sobrien \ 301760484Sobrien develop(bool, VerifyCompiledCode, false, \ 301860484Sobrien "Include miscellaneous runtime verifications in nmethod code; " \ 301960484Sobrien "default off because it disturbs nmethod size heuristics") \ 302060484Sobrien \ 302160484Sobrien notproduct(bool, CrashGCForDumpingJavaThread, false, \ 302260484Sobrien "Manually make GC thread crash then dump java stack trace; " \ 302360484Sobrien "Test only") \ 302460484Sobrien \ 302560484Sobrien /* compilation */ \ 302660484Sobrien product(bool, UseCompiler, true, \ 302760484Sobrien "Use Just-In-Time compilation") \ 302860484Sobrien \ 302960484Sobrien develop(bool, TraceCompilationPolicy, false, \ 303060484Sobrien "Trace compilation policy") \ 303160484Sobrien \ 303260484Sobrien develop(bool, TimeCompilationPolicy, false, \ 303360484Sobrien "Time the compilation policy") \ 303460484Sobrien \ 303560484Sobrien product(bool, UseCounterDecay, true, \ 303660484Sobrien "Adjust recompilation counters") \ 303760484Sobrien \ 303860484Sobrien develop(intx, CounterHalfLifeTime, 30, \ 303960484Sobrien "Half-life time of invocation counters (in seconds)") \ 304060484Sobrien \ 304160484Sobrien develop(intx, CounterDecayMinIntervalLength, 500, \ 304260484Sobrien "The minimum interval (in milliseconds) between invocation of " \ 304360484Sobrien "CounterDecay") \ 304460484Sobrien \ 304560484Sobrien product(bool, AlwaysCompileLoopMethods, false, \ 304660484Sobrien "When using recompilation, never interpret methods " \ 304760484Sobrien "containing loops") \ 304860484Sobrien \ 304960484Sobrien product(bool, DontCompileHugeMethods, true, \ 305060484Sobrien "Do not compile methods > HugeMethodLimit") \ 305160484Sobrien \ 305260484Sobrien /* Bytecode escape analysis estimation. */ \ 305360484Sobrien product(bool, EstimateArgEscape, true, \ 305460484Sobrien "Analyze bytecodes to estimate escape state of arguments") \ 305560484Sobrien \ 305660484Sobrien product(intx, BCEATraceLevel, 0, \ 305760484Sobrien "How much tracing to do of bytecode escape analysis estimates") \ 305860484Sobrien \ 305960484Sobrien product(intx, MaxBCEAEstimateLevel, 5, \ 306060484Sobrien "Maximum number of nested calls that are analyzed by BC EA") \ 306160484Sobrien \ 306260484Sobrien product(intx, MaxBCEAEstimateSize, 150, \ 306360484Sobrien "Maximum bytecode size of a method to be analyzed by BC EA") \ 306460484Sobrien \ 306560484Sobrien product(intx, AllocatePrefetchStyle, 1, \ 306660484Sobrien "0 = no prefetch, " \ 306760484Sobrien "1 = prefetch instructions for each allocation, " \ 306860484Sobrien "2 = use TLAB watermark to gate allocation prefetch, " \ 306960484Sobrien "3 = use BIS instruction on Sparc for allocation prefetch") \ 307060484Sobrien range(0, 3) \ 307160484Sobrien \ 307260484Sobrien product(intx, AllocatePrefetchDistance, -1, \ 307360484Sobrien "Distance to prefetch ahead of allocation pointer") \ 307460484Sobrien \ 307560484Sobrien product(intx, AllocatePrefetchLines, 3, \ 307660484Sobrien "Number of lines to prefetch ahead of array allocation pointer") \ 307760484Sobrien \ 307860484Sobrien product(intx, AllocateInstancePrefetchLines, 1, \ 307960484Sobrien "Number of lines to prefetch ahead of instance allocation " \ 308060484Sobrien "pointer") \ 308160484Sobrien \ 308260484Sobrien product(intx, AllocatePrefetchStepSize, 16, \ 308360484Sobrien "Step size in bytes of sequential prefetch instructions") \ 308460484Sobrien \ 308560484Sobrien product(intx, AllocatePrefetchInstr, 0, \ 308660484Sobrien "Prefetch instruction to prefetch ahead of allocation pointer") \ 308760484Sobrien \ 308860484Sobrien /* deoptimization */ \ 308960484Sobrien develop(bool, TraceDeoptimization, false, \ 309060484Sobrien "Trace deoptimization") \ 309160484Sobrien \ 309260484Sobrien develop(bool, DebugDeoptimization, false, \ 309360484Sobrien "Tracing various information while debugging deoptimization") \ 309460484Sobrien \ 309560484Sobrien product(intx, SelfDestructTimer, 0, \ 309660484Sobrien "Will cause VM to terminate after a given time (in minutes) " \ 309760484Sobrien "(0 means off)") \ 309860484Sobrien \ 309960484Sobrien product(intx, MaxJavaStackTraceDepth, 1024, \ 310060484Sobrien "The maximum number of lines in the stack trace for Java " \ 310160484Sobrien "exceptions (0 means all)") \ 310260484Sobrien \ 310360484Sobrien NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 310460484Sobrien "Guarantee a safepoint (at least) every so many milliseconds " \ 310560484Sobrien "(0 means none)")) \ 310660484Sobrien \ 310760484Sobrien EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ 310860484Sobrien "Guarantee a safepoint (at least) every so many milliseconds " \ 310960484Sobrien "(0 means none)")) \ 311060484Sobrien \ 311160484Sobrien product(intx, SafepointTimeoutDelay, 10000, \ 311260484Sobrien "Delay in milliseconds for option SafepointTimeout") \ 311360484Sobrien \ 311460484Sobrien product(intx, NmethodSweepActivity, 10, \ 311560484Sobrien "Removes cold nmethods from code cache if > 0. Higher values " \ 311660484Sobrien "result in more aggressive sweeping") \ 311760484Sobrien range(0, 2000) \ 311860484Sobrien \ 311960484Sobrien notproduct(bool, LogSweeper, false, \ 312060484Sobrien "Keep a ring buffer of sweeper activity") \ 312160484Sobrien \ 312260484Sobrien notproduct(intx, SweeperLogEntries, 1024, \ 312360484Sobrien "Number of records in the ring buffer of sweeper activity") \ 312460484Sobrien \ 312560484Sobrien notproduct(intx, MemProfilingInterval, 500, \ 312660484Sobrien "Time between each invocation of the MemProfiler") \ 312760484Sobrien \ 312860484Sobrien develop(intx, MallocCatchPtr, -1, \ 312960484Sobrien "Hit breakpoint when mallocing/freeing this pointer") \ 313060484Sobrien \ 313160484Sobrien notproduct(ccstrlist, SuppressErrorAt, "", \ 313260484Sobrien "List of assertions (file:line) to muzzle") \ 313360484Sobrien \ 313460484Sobrien notproduct(size_t, HandleAllocationLimit, 1024, \ 313560484Sobrien "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 313660484Sobrien "is used") \ 313760484Sobrien \ 313860484Sobrien develop(size_t, TotalHandleAllocationLimit, 1024, \ 313960484Sobrien "Threshold for total handle allocation when " \ 314060484Sobrien "+TraceHandleAllocation is used") \ 314160484Sobrien \ 314260484Sobrien develop(intx, StackPrintLimit, 100, \ 314360484Sobrien "number of stack frames to print in VM-level stack dump") \ 314460484Sobrien \ 314560484Sobrien notproduct(intx, MaxElementPrintSize, 256, \ 314660484Sobrien "maximum number of elements to print") \ 314760484Sobrien \ 314860484Sobrien notproduct(intx, MaxSubklassPrintSize, 4, \ 314960484Sobrien "maximum number of subklasses to print when printing klass") \ 315060484Sobrien \ 315160484Sobrien product(intx, MaxInlineLevel, 9, \ 315260484Sobrien "maximum number of nested calls that are inlined") \ 315360484Sobrien \ 315460484Sobrien product(intx, MaxRecursiveInlineLevel, 1, \ 315560484Sobrien "maximum number of nested recursive calls that are inlined") \ 315660484Sobrien \ 315760484Sobrien develop(intx, MaxForceInlineLevel, 100, \ 315860484Sobrien "maximum number of nested calls that are forced for inlining " \ 315960484Sobrien "(using CompilerOracle or marked w/ @ForceInline)") \ 316060484Sobrien \ 316160484Sobrien product_pd(intx, InlineSmallCode, \ 316260484Sobrien "Only inline already compiled methods if their code size is " \ 316360484Sobrien "less than this") \ 316460484Sobrien \ 316560484Sobrien product(intx, MaxInlineSize, 35, \ 316660484Sobrien "The maximum bytecode size of a method to be inlined") \ 316760484Sobrien \ 316860484Sobrien product_pd(intx, FreqInlineSize, \ 316960484Sobrien "The maximum bytecode size of a frequent method to be inlined") \ 317060484Sobrien \ 317160484Sobrien product(intx, MaxTrivialSize, 6, \ 317260484Sobrien "The maximum bytecode size of a trivial method to be inlined") \ 317360484Sobrien \ 317460484Sobrien product(intx, MinInliningThreshold, 250, \ 317560484Sobrien "The minimum invocation count a method needs to have to be " \ 317660484Sobrien "inlined") \ 317760484Sobrien \ 317860484Sobrien develop(intx, MethodHistogramCutoff, 100, \ 317960484Sobrien "The cutoff value for method invocation histogram (+CountCalls)") \ 318060484Sobrien \ 318160484Sobrien develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 318260484Sobrien "Number of interpreted methods to show in profile") \ 318360484Sobrien \ 318460484Sobrien develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 318560484Sobrien "Number of compiled methods to show in profile") \ 318660484Sobrien \ 318760484Sobrien develop(intx, ProfilerNumberOfStubMethods, 25, \ 318860484Sobrien "Number of stub methods to show in profile") \ 318960484Sobrien \ 319060484Sobrien develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 319160484Sobrien "Number of runtime stub nodes to show in profile") \ 319260484Sobrien \ 319360484Sobrien product(intx, ProfileIntervalsTicks, 100, \ 319460484Sobrien "Number of ticks between printing of interval profile " \ 319560484Sobrien "(+ProfileIntervals)") \ 319660484Sobrien \ 319760484Sobrien notproduct(intx, ScavengeALotInterval, 1, \ 319860484Sobrien "Interval between which scavenge will occur with +ScavengeALot") \ 319960484Sobrien \ 320060484Sobrien notproduct(intx, FullGCALotInterval, 1, \ 320160484Sobrien "Interval between which full gc will occur with +FullGCALot") \ 320260484Sobrien \ 320360484Sobrien notproduct(intx, FullGCALotStart, 0, \ 320460484Sobrien "For which invocation to start FullGCAlot") \ 320560484Sobrien \ 320660484Sobrien notproduct(intx, FullGCALotDummies, 32*K, \ 320760484Sobrien "Dummy object allocated with +FullGCALot, forcing all objects " \ 320860484Sobrien "to move") \ 320960484Sobrien \ 321060484Sobrien develop(intx, DontYieldALotInterval, 10, \ 321160484Sobrien "Interval between which yields will be dropped (milliseconds)") \ 321260484Sobrien \ 321360484Sobrien develop(intx, MinSleepInterval, 1, \ 321460484Sobrien "Minimum sleep() interval (milliseconds) when " \ 321560484Sobrien "ConvertSleepToYield is off (used for Solaris)") \ 321660484Sobrien \ 321760484Sobrien develop(intx, ProfilerPCTickThreshold, 15, \ 321860484Sobrien "Number of ticks in a PC buckets to be a hotspot") \ 321960484Sobrien \ 322060484Sobrien notproduct(intx, DeoptimizeALotInterval, 5, \ 322160484Sobrien "Number of exits until DeoptimizeALot kicks in") \ 322260484Sobrien \ 322360484Sobrien notproduct(intx, ZombieALotInterval, 5, \ 322460484Sobrien "Number of exits until ZombieALot kicks in") \ 322560484Sobrien \ 322660484Sobrien diagnostic(intx, MallocVerifyInterval, 0, \ 322760484Sobrien "If non-zero, verify C heap after every N calls to " \ 322860484Sobrien "malloc/realloc/free") \ 322960484Sobrien \ 323060484Sobrien diagnostic(intx, MallocVerifyStart, 0, \ 323160484Sobrien "If non-zero, start verifying C heap after Nth call to " \ 323260484Sobrien "malloc/realloc/free") \ 323360484Sobrien \ 323460484Sobrien diagnostic(uintx, MallocMaxTestWords, 0, \ 323560484Sobrien "If non-zero, maximum number of words that malloc/realloc can " \ 323660484Sobrien "allocate (for testing only)") \ 323760484Sobrien \ 323860484Sobrien product(intx, TypeProfileWidth, 2, \ 323960484Sobrien "Number of receiver types to record in call/cast profile") \ 324060484Sobrien \ 324160484Sobrien develop(intx, BciProfileWidth, 2, \ 324260484Sobrien "Number of return bci's to record in ret profile") \ 324360484Sobrien \ 324460484Sobrien product(intx, PerMethodRecompilationCutoff, 400, \ 324560484Sobrien "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 324660484Sobrien range(-1, max_intx) \ 324760484Sobrien \ 324860484Sobrien product(intx, PerBytecodeRecompilationCutoff, 200, \ 324960484Sobrien "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 325060484Sobrien range(-1, max_intx) \ 325160484Sobrien \ 325260484Sobrien product(intx, PerMethodTrapLimit, 100, \ 325360484Sobrien "Limit on traps (of one kind) in a method (includes inlines)") \ 325460484Sobrien \ 325560484Sobrien experimental(intx, PerMethodSpecTrapLimit, 5000, \ 325660484Sobrien "Limit on speculative traps (of one kind) in a method " \ 325760484Sobrien "(includes inlines)") \ 325860484Sobrien \ 325960484Sobrien product(intx, PerBytecodeTrapLimit, 4, \ 326060484Sobrien "Limit on traps (of one kind) at a particular BCI") \ 326160484Sobrien \ 326260484Sobrien experimental(intx, SpecTrapLimitExtraEntries, 3, \ 326360484Sobrien "Extra method data trap entries for speculation") \ 326460484Sobrien \ 326560484Sobrien develop(intx, InlineFrequencyRatio, 20, \ 326660484Sobrien "Ratio of call site execution to caller method invocation") \ 326760484Sobrien \ 326860484Sobrien develop_pd(intx, InlineFrequencyCount, \ 326960484Sobrien "Count of call site execution necessary to trigger frequent " \ 327060484Sobrien "inlining") \ 327160484Sobrien \ 327260484Sobrien develop(intx, InlineThrowCount, 50, \ 327360484Sobrien "Force inlining of interpreted methods that throw this often") \ 327460484Sobrien \ 327560484Sobrien develop(intx, InlineThrowMaxSize, 200, \ 327660484Sobrien "Force inlining of throwing methods smaller than this") \ 327760484Sobrien \ 327860484Sobrien develop(intx, ProfilerNodeSize, 1024, \ 327960484Sobrien "Size in K to allocate for the Profile Nodes of each thread") \ 328060484Sobrien \ 328160484Sobrien product_pd(intx, PreInflateSpin, \ 328260484Sobrien "Number of times to spin wait before inflation") \ 328360484Sobrien \ 328460484Sobrien /* gc parameters */ \ 328560484Sobrien product(size_t, InitialHeapSize, 0, \ 328660484Sobrien "Initial heap size (in bytes); zero means use ergonomics") \ 328760484Sobrien \ 328860484Sobrien product(size_t, MaxHeapSize, ScaleForWordSize(96*M), \ 328960484Sobrien "Maximum heap size (in bytes)") \ 329060484Sobrien \ 329160484Sobrien product(size_t, OldSize, ScaleForWordSize(4*M), \ 329260484Sobrien "Initial tenured generation size (in bytes)") \ 329360484Sobrien \ 329460484Sobrien product(size_t, NewSize, ScaleForWordSize(1*M), \ 329560484Sobrien "Initial new generation size (in bytes)") \ 329660484Sobrien \ 329760484Sobrien product(size_t, MaxNewSize, max_uintx, \ 329860484Sobrien "Maximum new generation size (in bytes), max_uintx means set " \ 329960484Sobrien "ergonomically") \ 330060484Sobrien \ 330160484Sobrien product(size_t, PretenureSizeThreshold, 0, \ 330260484Sobrien "Maximum size in bytes of objects allocated in DefNew " \ 330360484Sobrien "generation; zero means no maximum") \ 330460484Sobrien \ 330560484Sobrien product(size_t, TLABSize, 0, \ 330660484Sobrien "Starting TLAB size (in bytes); zero means set ergonomically") \ 330760484Sobrien \ 330860484Sobrien product(size_t, MinTLABSize, 2*K, \ 330960484Sobrien "Minimum allowed TLAB size (in bytes)") \ 331060484Sobrien range(1, max_uintx) \ 331160484Sobrien \ 331260484Sobrien product(uintx, TLABAllocationWeight, 35, \ 331360484Sobrien "Allocation averaging weight") \ 331460484Sobrien range(0, 100) \ 331560484Sobrien \ 331660484Sobrien /* Limit the lower bound of this flag to 1 as it is used */ \ 331760484Sobrien /* in a division expression. */ \ 331860484Sobrien product(uintx, TLABWasteTargetPercent, 1, \ 331960484Sobrien "Percentage of Eden that can be wasted") \ 332060484Sobrien range(1, 100) \ 332160484Sobrien \ 332260484Sobrien product(uintx, TLABRefillWasteFraction, 64, \ 332360484Sobrien "Maximum TLAB waste at a refill (internal fragmentation)") \ 332460484Sobrien range(1, max_uintx) \ 332560484Sobrien \ 332660484Sobrien product(uintx, TLABWasteIncrement, 4, \ 332760484Sobrien "Increment allowed waste at slow allocation") \ 332860484Sobrien \ 332960484Sobrien product(uintx, SurvivorRatio, 8, \ 333060484Sobrien "Ratio of eden/survivor space size") \ 333160484Sobrien \ 333260484Sobrien product(uintx, NewRatio, 2, \ 333360484Sobrien "Ratio of old/new generation sizes") \ 333460484Sobrien \ 333560484Sobrien product_pd(size_t, NewSizeThreadIncrease, \ 333660484Sobrien "Additional size added to desired new generation size per " \ 333760484Sobrien "non-daemon thread (in bytes)") \ 333860484Sobrien \ 333960484Sobrien product_pd(size_t, MetaspaceSize, \ 334060484Sobrien "Initial size of Metaspaces (in bytes)") \ 334160484Sobrien \ 334260484Sobrien product(size_t, MaxMetaspaceSize, max_uintx, \ 334360484Sobrien "Maximum size of Metaspaces (in bytes)") \ 334460484Sobrien \ 334560484Sobrien product(size_t, CompressedClassSpaceSize, 1*G, \ 334660484Sobrien "Maximum size of class area in Metaspace when compressed " \ 334760484Sobrien "class pointers are used") \ 334860484Sobrien range(1*M, 3*G) \ 334960484Sobrien \ 335060484Sobrien manageable(uintx, MinHeapFreeRatio, 40, \ 335160484Sobrien "The minimum percentage of heap free after GC to avoid expansion."\ 335260484Sobrien " For most GCs this applies to the old generation. In G1 and" \ 335360484Sobrien " ParallelGC it applies to the whole heap.") \ 335460484Sobrien range(0, 100) \ 335560484Sobrien constraint(MinHeapFreeRatioConstraintFunc) \ 335660484Sobrien \ 335760484Sobrien manageable(uintx, MaxHeapFreeRatio, 70, \ 335860484Sobrien "The maximum percentage of heap free after GC to avoid shrinking."\ 335960484Sobrien " For most GCs this applies to the old generation. In G1 and" \ 336060484Sobrien " ParallelGC it applies to the whole heap.") \ 336160484Sobrien range(0, 100) \ 336260484Sobrien constraint(MaxHeapFreeRatioConstraintFunc) \ 336360484Sobrien \ 336460484Sobrien product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 336560484Sobrien "Number of milliseconds per MB of free space in the heap") \ 336660484Sobrien \ 336760484Sobrien product(size_t, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 336860484Sobrien "The minimum change in heap space due to GC (in bytes)") \ 336960484Sobrien \ 337060484Sobrien product(size_t, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 337160484Sobrien "The minimum expansion of Metaspace (in bytes)") \ 337260484Sobrien \ 337360484Sobrien product(uintx, MaxMetaspaceFreeRatio, 70, \ 337460484Sobrien "The maximum percentage of Metaspace free after GC to avoid " \ 337560484Sobrien "shrinking") \ 337660484Sobrien range(0, 100) \ 337760484Sobrien constraint(MaxMetaspaceFreeRatioConstraintFunc) \ 337860484Sobrien \ 337960484Sobrien product(uintx, MinMetaspaceFreeRatio, 40, \ 338060484Sobrien "The minimum percentage of Metaspace free after GC to avoid " \ 338160484Sobrien "expansion") \ 338260484Sobrien range(0, 99) \ 338360484Sobrien constraint(MinMetaspaceFreeRatioConstraintFunc) \ 338460484Sobrien \ 338560484Sobrien product(size_t, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 338660484Sobrien "The maximum expansion of Metaspace without full GC (in bytes)") \ 338760484Sobrien \ 338860484Sobrien product(uintx, QueuedAllocationWarningCount, 0, \ 338960484Sobrien "Number of times an allocation that queues behind a GC " \ 339060484Sobrien "will retry before printing a warning") \ 339160484Sobrien \ 339260484Sobrien diagnostic(uintx, VerifyGCStartAt, 0, \ 339360484Sobrien "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 339460484Sobrien \ 339560484Sobrien diagnostic(intx, VerifyGCLevel, 0, \ 339660484Sobrien "Generation level at which to start +VerifyBefore/AfterGC") \ 339760484Sobrien \ 339860484Sobrien product(uintx, MaxTenuringThreshold, 15, \ 339960484Sobrien "Maximum value for tenuring threshold") \ 340060484Sobrien range(0, markOopDesc::max_age + 1) \ 340160484Sobrien constraint(MaxTenuringThresholdConstraintFunc) \ 340260484Sobrien \ 340360484Sobrien product(uintx, InitialTenuringThreshold, 7, \ 340460484Sobrien "Initial value for tenuring threshold") \ 340560484Sobrien range(0, markOopDesc::max_age + 1) \ 340660484Sobrien constraint(InitialTenuringThresholdConstraintFunc) \ 340760484Sobrien \ 340860484Sobrien product(uintx, TargetSurvivorRatio, 50, \ 340960484Sobrien "Desired percentage of survivor space used after scavenge") \ 341060484Sobrien range(0, 100) \ 341160484Sobrien \ 341260484Sobrien product(uintx, MarkSweepDeadRatio, 5, \ 341360484Sobrien "Percentage (0-100) of the old gen allowed as dead wood. " \ 341460484Sobrien "Serial mark sweep treats this as both the minimum and maximum " \ 341560484Sobrien "value. " \ 341660484Sobrien "CMS uses this value only if it falls back to mark sweep. " \ 341760484Sobrien "Par compact uses a variable scale based on the density of the " \ 341860484Sobrien "generation and treats this as the maximum value when the heap " \ 341960484Sobrien "is either completely full or completely empty. Par compact " \ 342060484Sobrien "also has a smaller default value; see arguments.cpp.") \ 342160484Sobrien range(0, 100) \ 342260484Sobrien \ 342360484Sobrien product(uintx, MarkSweepAlwaysCompactCount, 4, \ 342460484Sobrien "How often should we fully compact the heap (ignoring the dead " \ 342560484Sobrien "space parameters)") \ 342660484Sobrien range(1, max_uintx) \ 342760484Sobrien \ 342860484Sobrien product(intx, PrintCMSStatistics, 0, \ 342960484Sobrien "Statistics for CMS") \ 343060484Sobrien \ 343160484Sobrien product(bool, PrintCMSInitiationStatistics, false, \ 343260484Sobrien "Statistics for initiating a CMS collection") \ 343360484Sobrien \ 343460484Sobrien product(intx, PrintFLSStatistics, 0, \ 343560484Sobrien "Statistics for CMS' FreeListSpace") \ 343660484Sobrien \ 343760484Sobrien product(intx, PrintFLSCensus, 0, \ 343860484Sobrien "Census for CMS' FreeListSpace") \ 343960484Sobrien \ 344060484Sobrien develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 344160484Sobrien "Delay between expansion and allocation (in milliseconds)") \ 344260484Sobrien \ 344360484Sobrien develop(uintx, GCWorkerDelayMillis, 0, \ 344460484Sobrien "Delay in scheduling GC workers (in milliseconds)") \ 344560484Sobrien \ 344660484Sobrien product(intx, DeferThrSuspendLoopCount, 4000, \ 344760484Sobrien "(Unstable) Number of times to iterate in safepoint loop " \ 344860484Sobrien "before blocking VM threads ") \ 344960484Sobrien \ 345060484Sobrien product(intx, DeferPollingPageLoopCount, -1, \ 345160484Sobrien "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 345260484Sobrien "before changing safepoint polling page to RO ") \ 345360484Sobrien \ 345460484Sobrien product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 345560484Sobrien \ 345660484Sobrien product(bool, PSChunkLargeArrays, true, \ 345760484Sobrien "Process large arrays in chunks") \ 345860484Sobrien \ 345960484Sobrien product(uintx, GCDrainStackTargetSize, 64, \ 346060484Sobrien "Number of entries we will try to leave on the stack " \ 346160484Sobrien "during parallel gc") \ 346260484Sobrien \ 346360484Sobrien /* stack parameters */ \ 346460484Sobrien product_pd(intx, StackYellowPages, \ 346560484Sobrien "Number of yellow zone (recoverable overflows) pages") \ 346660484Sobrien range(1, max_intx) \ 346760484Sobrien \ 346860484Sobrien product_pd(intx, StackRedPages, \ 346960484Sobrien "Number of red zone (unrecoverable overflows) pages") \ 347060484Sobrien range(1, max_intx) \ 347160484Sobrien \ 347260484Sobrien /* greater stack shadow pages can't generate instruction to bang stack */ \ 347360484Sobrien product_pd(intx, StackShadowPages, \ 347460484Sobrien "Number of shadow zone (for overflow checking) pages " \ 347560484Sobrien "this should exceed the depth of the VM and native call stack") \ 347660484Sobrien range(1, 50) \ 347760484Sobrien \ 347860484Sobrien product_pd(intx, ThreadStackSize, \ 347960484Sobrien "Thread Stack Size (in Kbytes)") \ 348060484Sobrien \ 348160484Sobrien product_pd(intx, VMThreadStackSize, \ 348260484Sobrien "Non-Java Thread Stack Size (in Kbytes)") \ 348360484Sobrien \ 348460484Sobrien product_pd(intx, CompilerThreadStackSize, \ 348560484Sobrien "Compiler Thread Stack Size (in Kbytes)") \ 348660484Sobrien \ 348760484Sobrien develop_pd(size_t, JVMInvokeMethodSlack, \ 348860484Sobrien "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 348960484Sobrien \ 349060484Sobrien /* code cache parameters */ \ 349160484Sobrien /* ppc64/tiered compilation has large code-entry alignment. */ \ 349260484Sobrien develop(uintx, CodeCacheSegmentSize, 64 PPC64_ONLY(+64) NOT_PPC64(TIERED_ONLY(+64)),\ 349360484Sobrien "Code cache segment size (in bytes) - smallest unit of " \ 349460484Sobrien "allocation") \ 349560484Sobrien range(1, 1024) \ 349660484Sobrien \ 349760484Sobrien develop_pd(intx, CodeEntryAlignment, \ 349860484Sobrien "Code entry alignment for generated code (in bytes)") \ 349960484Sobrien \ 350060484Sobrien product_pd(intx, OptoLoopAlignment, \ 350160484Sobrien "Align inner loops to zero relative to this modulus") \ 350260484Sobrien \ 350360484Sobrien product_pd(uintx, InitialCodeCacheSize, \ 350460484Sobrien "Initial code cache size (in bytes)") \ 350560484Sobrien \ 350660484Sobrien develop_pd(uintx, CodeCacheMinimumUseSpace, \ 350760484Sobrien "Minimum code cache size (in bytes) required to start VM.") \ 350860484Sobrien \ 350960484Sobrien product(bool, SegmentedCodeCache, false, \ 351060484Sobrien "Use a segmented code cache") \ 351160484Sobrien \ 351260484Sobrien product_pd(uintx, ReservedCodeCacheSize, \ 351360484Sobrien "Reserved code cache size (in bytes) - maximum code cache size") \ 351460484Sobrien \ 351560484Sobrien product_pd(uintx, NonProfiledCodeHeapSize, \ 351660484Sobrien "Size of code heap with non-profiled methods (in bytes)") \ 351760484Sobrien \ 351860484Sobrien product_pd(uintx, ProfiledCodeHeapSize, \ 351960484Sobrien "Size of code heap with profiled methods (in bytes)") \ 352060484Sobrien \ 352160484Sobrien product_pd(uintx, NonNMethodCodeHeapSize, \ 352260484Sobrien "Size of code heap with non-nmethods (in bytes)") \ 352360484Sobrien \ 352460484Sobrien product_pd(uintx, CodeCacheExpansionSize, \ 352560484Sobrien "Code cache expansion size (in bytes)") \ 352660484Sobrien \ 352760484Sobrien develop_pd(uintx, CodeCacheMinBlockLength, \ 352860484Sobrien "Minimum number of segments in a code cache block") \ 352960484Sobrien range(1, 100) \ 353060484Sobrien \ 353160484Sobrien notproduct(bool, ExitOnFullCodeCache, false, \ 353260484Sobrien "Exit the VM if we fill the code cache") \ 353360484Sobrien \ 353460484Sobrien product(bool, UseCodeCacheFlushing, true, \ 353560484Sobrien "Remove cold/old nmethods from the code cache") \ 353660484Sobrien \ 353760484Sobrien product(uintx, StartAggressiveSweepingAt, 10, \ 353860484Sobrien "Start aggressive sweeping if X[%] of the code cache is free." \ 353960484Sobrien "Segmented code cache: X[%] of the non-profiled heap." \ 354060484Sobrien "Non-segmented code cache: X[%] of the total code cache") \ 354160484Sobrien range(0, 100) \ 354260484Sobrien \ 354360484Sobrien /* interpreter debugging */ \ 354460484Sobrien develop(intx, BinarySwitchThreshold, 5, \ 354560484Sobrien "Minimal number of lookupswitch entries for rewriting to binary " \ 354660484Sobrien "switch") \ 354760484Sobrien \ 354860484Sobrien develop(intx, StopInterpreterAt, 0, \ 354960484Sobrien "Stop interpreter execution at specified bytecode number") \ 355060484Sobrien \ 355160484Sobrien develop(intx, TraceBytecodesAt, 0, \ 355260484Sobrien "Trace bytecodes starting with specified bytecode number") \ 355360484Sobrien \ 355460484Sobrien /* compiler interface */ \ 355560484Sobrien develop(intx, CIStart, 0, \ 355660484Sobrien "The id of the first compilation to permit") \ 355760484Sobrien \ 355860484Sobrien develop(intx, CIStop, max_jint, \ 355960484Sobrien "The id of the last compilation to permit") \ 356060484Sobrien \ 356160484Sobrien develop(intx, CIStartOSR, 0, \ 356260484Sobrien "The id of the first osr compilation to permit " \ 356360484Sobrien "(CICountOSR must be on)") \ 356460484Sobrien \ 356560484Sobrien develop(intx, CIStopOSR, max_jint, \ 356660484Sobrien "The id of the last osr compilation to permit " \ 356760484Sobrien "(CICountOSR must be on)") \ 356860484Sobrien \ 356960484Sobrien develop(intx, CIBreakAtOSR, -1, \ 357060484Sobrien "The id of osr compilation to break at") \ 357160484Sobrien \ 357260484Sobrien develop(intx, CIBreakAt, -1, \ 357360484Sobrien "The id of compilation to break at") \ 357460484Sobrien \ 357560484Sobrien product(ccstrlist, CompileOnly, "", \ 357660484Sobrien "List of methods (pkg/class.name) to restrict compilation to") \ 357760484Sobrien \ 357860484Sobrien product(ccstr, CompileCommandFile, NULL, \ 357960484Sobrien "Read compiler commands from this file [.hotspot_compiler]") \ 358060484Sobrien \ 358160484Sobrien product(ccstrlist, CompileCommand, "", \ 358260484Sobrien "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 358360484Sobrien \ 358460484Sobrien develop(bool, ReplayCompiles, false, \ 358560484Sobrien "Enable replay of compilations from ReplayDataFile") \ 358660484Sobrien \ 358760484Sobrien product(ccstr, ReplayDataFile, NULL, \ 358860484Sobrien "File containing compilation replay information" \ 358960484Sobrien "[default: ./replay_pid%p.log] (%p replaced with pid)") \ 359060484Sobrien \ 359160484Sobrien product(ccstr, InlineDataFile, NULL, \ 359260484Sobrien "File containing inlining replay information" \ 359360484Sobrien "[default: ./inline_pid%p.log] (%p replaced with pid)") \ 359460484Sobrien \ 359560484Sobrien develop(intx, ReplaySuppressInitializers, 2, \ 359660484Sobrien "Control handling of class initialization during replay: " \ 359760484Sobrien "0 - don't do anything special; " \ 359860484Sobrien "1 - treat all class initializers as empty; " \ 359960484Sobrien "2 - treat class initializers for application classes as empty; " \ 360060484Sobrien "3 - allow all class initializers to run during bootstrap but " \ 360160484Sobrien " pretend they are empty after starting replay") \ 360260484Sobrien range(0, 3) \ 360360484Sobrien \ 360460484Sobrien develop(bool, ReplayIgnoreInitErrors, false, \ 360560484Sobrien "Ignore exceptions thrown during initialization for replay") \ 360660484Sobrien \ 360760484Sobrien product(bool, DumpReplayDataOnError, true, \ 360860484Sobrien "Record replay data for crashing compiler threads") \ 360960484Sobrien \ 361060484Sobrien product(bool, CICompilerCountPerCPU, false, \ 361160484Sobrien "1 compiler thread for log(N CPUs)") \ 361260484Sobrien \ 361360484Sobrien develop(intx, CIFireOOMAt, -1, \ 361460484Sobrien "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 361560484Sobrien "(non-negative value throws OOM after this many CI accesses " \ 361660484Sobrien "in each compile)") \ 361760484Sobrien notproduct(intx, CICrashAt, -1, \ 361860484Sobrien "id of compilation to trigger assert in compiler thread for " \ 361960484Sobrien "the purpose of testing, e.g. generation of replay data") \ 362060484Sobrien notproduct(bool, CIObjectFactoryVerify, false, \ 362160484Sobrien "enable potentially expensive verification in ciObjectFactory") \ 362260484Sobrien \ 362360484Sobrien /* Priorities */ \ 362460484Sobrien product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 362560484Sobrien \ 362660484Sobrien product(intx, ThreadPriorityPolicy, 0, \ 362760484Sobrien "0 : Normal. "\ 362860484Sobrien " VM chooses priorities that are appropriate for normal "\ 362960484Sobrien " applications. On Solaris NORM_PRIORITY and above are mapped "\ 363060484Sobrien " to normal native priority. Java priorities below " \ 363160484Sobrien " NORM_PRIORITY map to lower native priority values. On "\ 363260484Sobrien " Windows applications are allowed to use higher native "\ 363360484Sobrien " priorities. However, with ThreadPriorityPolicy=0, VM will "\ 363460484Sobrien " not use the highest possible native priority, "\ 363560484Sobrien " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\ 363660484Sobrien " system threads. On Linux thread priorities are ignored "\ 363760484Sobrien " because the OS does not support static priority in "\ 363860484Sobrien " SCHED_OTHER scheduling class which is the only choice for "\ 363960484Sobrien " non-root, non-realtime applications. "\ 364060484Sobrien "1 : Aggressive. "\ 364160484Sobrien " Java thread priorities map over to the entire range of "\ 364260484Sobrien " native thread priorities. Higher Java thread priorities map "\ 364360484Sobrien " to higher native thread priorities. This policy should be "\ 364460484Sobrien " used with care, as sometimes it can cause performance "\ 364560484Sobrien " degradation in the application and/or the entire system. On "\ 364660484Sobrien " Linux this policy requires root privilege.") \ 364760484Sobrien range(0, 1) \ 364860484Sobrien \ 364960484Sobrien product(bool, ThreadPriorityVerbose, false, \ 365060484Sobrien "Print priority changes") \ 365160484Sobrien \ 365260484Sobrien product(intx, CompilerThreadPriority, -1, \ 365360484Sobrien "The native priority at which compiler threads should run " \ 365460484Sobrien "(-1 means no change)") \ 365560484Sobrien \ 365660484Sobrien product(intx, VMThreadPriority, -1, \ 365760484Sobrien "The native priority at which the VM thread should run " \ 365860484Sobrien "(-1 means no change)") \ 365960484Sobrien \ 366060484Sobrien product(bool, CompilerThreadHintNoPreempt, true, \ 366160484Sobrien "(Solaris only) Give compiler threads an extra quanta") \ 366260484Sobrien \ 366360484Sobrien product(bool, VMThreadHintNoPreempt, false, \ 366460484Sobrien "(Solaris only) Give VM thread an extra quanta") \ 366560484Sobrien \ 366660484Sobrien product(intx, JavaPriority1_To_OSPriority, -1, \ 366760484Sobrien "Map Java priorities to OS priorities") \ 366860484Sobrien \ 366960484Sobrien product(intx, JavaPriority2_To_OSPriority, -1, \ 367060484Sobrien "Map Java priorities to OS priorities") \ 367160484Sobrien \ 367260484Sobrien product(intx, JavaPriority3_To_OSPriority, -1, \ 367360484Sobrien "Map Java priorities to OS priorities") \ 367460484Sobrien \ 367560484Sobrien product(intx, JavaPriority4_To_OSPriority, -1, \ 367660484Sobrien "Map Java priorities to OS priorities") \ 367760484Sobrien \ 367860484Sobrien product(intx, JavaPriority5_To_OSPriority, -1, \ 367960484Sobrien "Map Java priorities to OS priorities") \ 368060484Sobrien \ 368160484Sobrien product(intx, JavaPriority6_To_OSPriority, -1, \ 368260484Sobrien "Map Java priorities to OS priorities") \ 368360484Sobrien \ 368460484Sobrien product(intx, JavaPriority7_To_OSPriority, -1, \ 368560484Sobrien "Map Java priorities to OS priorities") \ 368660484Sobrien \ 368760484Sobrien product(intx, JavaPriority8_To_OSPriority, -1, \ 368860484Sobrien "Map Java priorities to OS priorities") \ 368960484Sobrien \ 369060484Sobrien product(intx, JavaPriority9_To_OSPriority, -1, \ 369160484Sobrien "Map Java priorities to OS priorities") \ 369260484Sobrien \ 369360484Sobrien product(intx, JavaPriority10_To_OSPriority,-1, \ 369460484Sobrien "Map Java priorities to OS priorities") \ 369560484Sobrien \ 369660484Sobrien experimental(bool, UseCriticalJavaThreadPriority, false, \ 369760484Sobrien "Java thread priority 10 maps to critical scheduling priority") \ 369860484Sobrien \ 369960484Sobrien experimental(bool, UseCriticalCompilerThreadPriority, false, \ 370060484Sobrien "Compiler thread(s) run at critical scheduling priority") \ 370160484Sobrien \ 370260484Sobrien experimental(bool, UseCriticalCMSThreadPriority, false, \ 370360484Sobrien "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 370460484Sobrien \ 370560484Sobrien /* compiler debugging */ \ 370660484Sobrien notproduct(intx, CompileTheWorldStartAt, 1, \ 370760484Sobrien "First class to consider when using +CompileTheWorld") \ 370860484Sobrien \ 370960484Sobrien notproduct(intx, CompileTheWorldStopAt, max_jint, \ 371060484Sobrien "Last class to consider when using +CompileTheWorld") \ 371160484Sobrien \ 371260484Sobrien develop(intx, NewCodeParameter, 0, \ 371360484Sobrien "Testing Only: Create a dedicated integer parameter before " \ 371460484Sobrien "putback") \ 371560484Sobrien \ 371660484Sobrien /* new oopmap storage allocation */ \ 371760484Sobrien develop(intx, MinOopMapAllocation, 8, \ 371860484Sobrien "Minimum number of OopMap entries in an OopMapSet") \ 371960484Sobrien \ 372060484Sobrien /* Background Compilation */ \ 372160484Sobrien develop(intx, LongCompileThreshold, 50, \ 372260484Sobrien "Used with +TraceLongCompiles") \ 372360484Sobrien \ 372460484Sobrien product(intx, StarvationMonitorInterval, 200, \ 372560484Sobrien "Pause between each check (in milliseconds)") \ 372660484Sobrien \ 372760484Sobrien /* recompilation */ \ 372860484Sobrien product_pd(intx, CompileThreshold, \ 372960484Sobrien "number of interpreted method invocations before (re-)compiling") \ 373060484Sobrien \ 373160484Sobrien product(double, CompileThresholdScaling, 1.0, \ 373260484Sobrien "Factor to control when first compilation happens " \ 373360484Sobrien "(both with and without tiered compilation): " \ 373460484Sobrien "values greater than 1.0 delay counter overflow, " \ 373560484Sobrien "values between 0 and 1.0 rush counter overflow, " \ 373660484Sobrien "value of 1.0 leaves compilation thresholds unchanged " \ 373760484Sobrien "value of 0.0 is equivalent to -Xint. " \ 373860484Sobrien "" \ 373960484Sobrien "Flag can be set as per-method option. " \ 374060484Sobrien "If a value is specified for a method, compilation thresholds " \ 374160484Sobrien "for that method are scaled by both the value of the global flag "\ 374260484Sobrien "and the value of the per-method flag.") \ 374360484Sobrien \ 374489857Sobrien product(intx, Tier0InvokeNotifyFreqLog, 7, \ 374589857Sobrien "Interpreter (tier 0) invocation notification frequency") \ 374660484Sobrien \ 374760484Sobrien product(intx, Tier2InvokeNotifyFreqLog, 11, \ 374860484Sobrien "C1 without MDO (tier 2) invocation notification frequency") \ 374960484Sobrien \ 375060484Sobrien product(intx, Tier3InvokeNotifyFreqLog, 10, \ 375160484Sobrien "C1 with MDO profiling (tier 3) invocation notification " \ 375260484Sobrien "frequency") \ 375360484Sobrien \ 375460484Sobrien product(intx, Tier23InlineeNotifyFreqLog, 20, \ 375560484Sobrien "Inlinee invocation (tiers 2 and 3) notification frequency") \ 375660484Sobrien \ 375760484Sobrien product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 375860484Sobrien "Interpreter (tier 0) invocation notification frequency") \ 375960484Sobrien \ 376060484Sobrien product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 376160484Sobrien "C1 without MDO (tier 2) invocation notification frequency") \ 376260484Sobrien \ 376360484Sobrien product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 376460484Sobrien "C1 with MDO profiling (tier 3) invocation notification " \ 376560484Sobrien "frequency") \ 376660484Sobrien \ 376760484Sobrien product(intx, Tier2CompileThreshold, 0, \ 376860484Sobrien "threshold at which tier 2 compilation is invoked") \ 376960484Sobrien \ 377060484Sobrien product(intx, Tier2BackEdgeThreshold, 0, \ 377160484Sobrien "Back edge threshold at which tier 2 compilation is invoked") \ 377260484Sobrien \ 377360484Sobrien product(intx, Tier3InvocationThreshold, 200, \ 377460484Sobrien "Compile if number of method invocations crosses this " \ 377560484Sobrien "threshold") \ 377660484Sobrien \ 377760484Sobrien product(intx, Tier3MinInvocationThreshold, 100, \ 377860484Sobrien "Minimum invocation to compile at tier 3") \ 377960484Sobrien \ 378060484Sobrien product(intx, Tier3CompileThreshold, 2000, \ 378160484Sobrien "Threshold at which tier 3 compilation is invoked (invocation " \ 378260484Sobrien "minimum must be satisfied") \ 378360484Sobrien \ 378460484Sobrien product(intx, Tier3BackEdgeThreshold, 60000, \ 378560484Sobrien "Back edge threshold at which tier 3 OSR compilation is invoked") \ 378660484Sobrien \ 378760484Sobrien product(intx, Tier4InvocationThreshold, 5000, \ 378860484Sobrien "Compile if number of method invocations crosses this " \ 378960484Sobrien "threshold") \ 379060484Sobrien \ 379160484Sobrien product(intx, Tier4MinInvocationThreshold, 600, \ 379260484Sobrien "Minimum invocation to compile at tier 4") \ 379360484Sobrien \ 379460484Sobrien product(intx, Tier4CompileThreshold, 15000, \ 379560484Sobrien "Threshold at which tier 4 compilation is invoked (invocation " \ 379660484Sobrien "minimum must be satisfied") \ 379760484Sobrien \ 379860484Sobrien product(intx, Tier4BackEdgeThreshold, 40000, \ 379960484Sobrien "Back edge threshold at which tier 4 OSR compilation is invoked") \ 380060484Sobrien \ 380160484Sobrien product(intx, Tier3DelayOn, 5, \ 380260484Sobrien "If C2 queue size grows over this amount per compiler thread " \ 380360484Sobrien "stop compiling at tier 3 and start compiling at tier 2") \ 380460484Sobrien \ 380560484Sobrien product(intx, Tier3DelayOff, 2, \ 380660484Sobrien "If C2 queue size is less than this amount per compiler thread " \ 380760484Sobrien "allow methods compiled at tier 2 transition to tier 3") \ 380860484Sobrien \ 380960484Sobrien product(intx, Tier3LoadFeedback, 5, \ 381060484Sobrien "Tier 3 thresholds will increase twofold when C1 queue size " \ 381160484Sobrien "reaches this amount per compiler thread") \ 381260484Sobrien \ 381360484Sobrien product(intx, Tier4LoadFeedback, 3, \ 381460484Sobrien "Tier 4 thresholds will increase twofold when C2 queue size " \ 381560484Sobrien "reaches this amount per compiler thread") \ 381660484Sobrien \ 381760484Sobrien product(intx, TieredCompileTaskTimeout, 50, \ 381860484Sobrien "Kill compile task if method was not used within " \ 381960484Sobrien "given timeout in milliseconds") \ 382060484Sobrien \ 382160484Sobrien product(intx, TieredStopAtLevel, 4, \ 382260484Sobrien "Stop at given compilation level") \ 382360484Sobrien \ 382460484Sobrien product(intx, Tier0ProfilingStartPercentage, 200, \ 382560484Sobrien "Start profiling in interpreter if the counters exceed tier 3 " \ 382660484Sobrien "thresholds by the specified percentage") \ 382760484Sobrien \ 382860484Sobrien product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ 382960484Sobrien "Increase the compile threshold for C1 compilation if the code " \ 383060484Sobrien "cache is filled by the specified percentage") \ 383160484Sobrien range(0, 99) \ 383260484Sobrien \ 383360484Sobrien product(intx, TieredRateUpdateMinTime, 1, \ 383460484Sobrien "Minimum rate sampling interval (in milliseconds)") \ 383560484Sobrien \ 383660484Sobrien product(intx, TieredRateUpdateMaxTime, 25, \ 383760484Sobrien "Maximum rate sampling interval (in milliseconds)") \ 383860484Sobrien \ 383960484Sobrien product_pd(bool, TieredCompilation, \ 384060484Sobrien "Enable tiered compilation") \ 384160484Sobrien \ 384260484Sobrien product(bool, PrintTieredEvents, false, \ 384360484Sobrien "Print tiered events notifications") \ 384460484Sobrien \ 384560484Sobrien product_pd(intx, OnStackReplacePercentage, \ 384660484Sobrien "NON_TIERED number of method invocations/branches (expressed as " \ 384760484Sobrien "% of CompileThreshold) before (re-)compiling OSR code") \ 384860484Sobrien \ 384960484Sobrien product(intx, InterpreterProfilePercentage, 33, \ 385060484Sobrien "NON_TIERED number of method invocations/branches (expressed as " \ 385160484Sobrien "% of CompileThreshold) before profiling in the interpreter") \ 385260484Sobrien range(0, 100) \ 385360484Sobrien \ 385460484Sobrien develop(intx, MaxRecompilationSearchLength, 10, \ 385560484Sobrien "The maximum number of frames to inspect when searching for " \ 385660484Sobrien "recompilee") \ 385760484Sobrien \ 385860484Sobrien develop(intx, MaxInterpretedSearchLength, 3, \ 385960484Sobrien "The maximum number of interpreted frames to skip when searching "\ 386060484Sobrien "for recompilee") \ 386160484Sobrien \ 386260484Sobrien develop(intx, DesiredMethodLimit, 8000, \ 386360484Sobrien "The desired maximum method size (in bytecodes) after inlining") \ 386460484Sobrien \ 386560484Sobrien develop(intx, HugeMethodLimit, 8000, \ 386660484Sobrien "Don't compile methods larger than this if " \ 386760484Sobrien "+DontCompileHugeMethods") \ 386860484Sobrien \ 386960484Sobrien /* New JDK 1.4 reflection implementation */ \ 387060484Sobrien \ 387160484Sobrien develop(intx, FastSuperclassLimit, 8, \ 387260484Sobrien "Depth of hardwired instanceof accelerator array") \ 387360484Sobrien \ 387460484Sobrien /* Properties for Java libraries */ \ 387560484Sobrien \ 387660484Sobrien product(size_t, MaxDirectMemorySize, 0, \ 387760484Sobrien "Maximum total size of NIO direct-buffer allocations") \ 387860484Sobrien \ 387960484Sobrien /* Flags used for temporary code during development */ \ 388060484Sobrien \ 388160484Sobrien diagnostic(bool, UseNewCode, false, \ 388260484Sobrien "Testing Only: Use the new version while testing") \ 388360484Sobrien \ 388460484Sobrien diagnostic(bool, UseNewCode2, false, \ 388560484Sobrien "Testing Only: Use the new version while testing") \ 388660484Sobrien \ 388760484Sobrien diagnostic(bool, UseNewCode3, false, \ 388860484Sobrien "Testing Only: Use the new version while testing") \ 388960484Sobrien \ 389060484Sobrien /* flags for performance data collection */ \ 389160484Sobrien \ 389260484Sobrien product(bool, UsePerfData, falseInEmbedded, \ 389360484Sobrien "Flag to disable jvmstat instrumentation for performance testing "\ 389460484Sobrien "and problem isolation purposes") \ 389560484Sobrien \ 389660484Sobrien product(bool, PerfDataSaveToFile, false, \ 389760484Sobrien "Save PerfData memory to hsperfdata_<pid> file on exit") \ 389860484Sobrien \ 389960484Sobrien product(ccstr, PerfDataSaveFile, NULL, \ 390060484Sobrien "Save PerfData memory to the specified absolute pathname. " \ 390160484Sobrien "The string %p in the file name (if present) " \ 390260484Sobrien "will be replaced by pid") \ 390360484Sobrien \ 390460484Sobrien product(intx, PerfDataSamplingInterval, 50, \ 390560484Sobrien "Data sampling interval (in milliseconds)") \ 390660484Sobrien \ 390760484Sobrien develop(bool, PerfTraceDataCreation, false, \ 390860484Sobrien "Trace creation of Performance Data Entries") \ 390960484Sobrien \ 391060484Sobrien develop(bool, PerfTraceMemOps, false, \ 391160484Sobrien "Trace PerfMemory create/attach/detach calls") \ 391260484Sobrien \ 391360484Sobrien product(bool, PerfDisableSharedMem, false, \ 391460484Sobrien "Store performance data in standard memory") \ 391560484Sobrien \ 391660484Sobrien product(intx, PerfDataMemorySize, 32*K, \ 391760484Sobrien "Size of performance data memory region. Will be rounded " \ 391860484Sobrien "up to a multiple of the native os page size.") \ 391960484Sobrien \ 392060484Sobrien product(intx, PerfMaxStringConstLength, 1024, \ 392160484Sobrien "Maximum PerfStringConstant string length before truncation") \ 392260484Sobrien \ 392360484Sobrien product(bool, PerfAllowAtExitRegistration, false, \ 392460484Sobrien "Allow registration of atexit() methods") \ 392560484Sobrien \ 392660484Sobrien product(bool, PerfBypassFileSystemCheck, false, \ 392760484Sobrien "Bypass Win32 file system criteria checks (Windows Only)") \ 392860484Sobrien \ 392960484Sobrien product(intx, UnguardOnExecutionViolation, 0, \ 393060484Sobrien "Unguard page and retry on no-execute fault (Win32 only) " \ 393160484Sobrien "0=off, 1=conservative, 2=aggressive") \ 393260484Sobrien range(0, 2) \ 393360484Sobrien \ 393460484Sobrien /* Serviceability Support */ \ 393560484Sobrien \ 393660484Sobrien product(bool, ManagementServer, false, \ 393760484Sobrien "Create JMX Management Server") \ 393860484Sobrien \ 393960484Sobrien product(bool, DisableAttachMechanism, false, \ 394060484Sobrien "Disable mechanism that allows tools to attach to this VM") \ 394160484Sobrien \ 394260484Sobrien product(bool, StartAttachListener, false, \ 394360484Sobrien "Always start Attach Listener at VM startup") \ 394460484Sobrien \ 394560484Sobrien manageable(bool, PrintConcurrentLocks, false, \ 394660484Sobrien "Print java.util.concurrent locks in thread dump") \ 394760484Sobrien \ 394860484Sobrien product(bool, TransmitErrorReport, false, \ 394960484Sobrien "Enable error report transmission on erroneous termination") \ 395060484Sobrien \ 395160484Sobrien product(ccstr, ErrorReportServer, NULL, \ 395260484Sobrien "Override built-in error report server address") \ 395360484Sobrien \ 395460484Sobrien /* Shared spaces */ \ 395560484Sobrien \ 395660484Sobrien product(bool, UseSharedSpaces, true, \ 395760484Sobrien "Use shared spaces for metadata") \ 395860484Sobrien \ 395960484Sobrien product(bool, VerifySharedSpaces, false, \ 396060484Sobrien "Verify shared spaces (false for default archive, true for " \ 396160484Sobrien "archive specified by -XX:SharedArchiveFile)") \ 396260484Sobrien \ 396360484Sobrien product(bool, RequireSharedSpaces, false, \ 396460484Sobrien "Require shared spaces for metadata") \ 396560484Sobrien \ 396660484Sobrien product(bool, DumpSharedSpaces, false, \ 396760484Sobrien "Special mode: JVM reads a class list, loads classes, builds " \ 396860484Sobrien "shared spaces, and dumps the shared spaces to a file to be " \ 396960484Sobrien "used in future JVM runs") \ 397060484Sobrien \ 397160484Sobrien product(bool, PrintSharedSpaces, false, \ 397260484Sobrien "Print usage of shared spaces") \ 397360484Sobrien \ 397460484Sobrien product(bool, PrintSharedArchiveAndExit, false, \ 397560484Sobrien "Print shared archive file contents") \ 397660484Sobrien \ 397760484Sobrien product(bool, PrintSharedDictionary, false, \ 397860484Sobrien "If PrintSharedArchiveAndExit is true, also print the shared " \ 397960484Sobrien "dictionary") \ 398060484Sobrien \ 398160484Sobrien product(size_t, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 398260484Sobrien "Size of read-write space for metadata (in bytes)") \ 398360484Sobrien \ 398460484Sobrien product(size_t, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 398560484Sobrien "Size of read-only space for metadata (in bytes)") \ 398660484Sobrien \ 398760484Sobrien product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ 398860484Sobrien "Size of the shared miscellaneous data area (in bytes)") \ 398960484Sobrien \ 399060484Sobrien product(uintx, SharedMiscCodeSize, 120*K, \ 399160484Sobrien "Size of the shared miscellaneous code area (in bytes)") \ 399260484Sobrien \ 399360484Sobrien product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \ 399460484Sobrien NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ 399560484Sobrien "Address to allocate shared memory region for class data") \ 399660484Sobrien \ 399760484Sobrien product(uintx, SharedSymbolTableBucketSize, 4, \ 399860484Sobrien "Average number of symbols per bucket in shared table") \ 399960484Sobrien \ 400060484Sobrien diagnostic(bool, IgnoreUnverifiableClassesDuringDump, false, \ 400160484Sobrien "Do not quit -Xshare:dump even if we encounter unverifiable " \ 400260484Sobrien "classes. Just exclude them from the shared dictionary.") \ 400360484Sobrien \ 400460484Sobrien diagnostic(bool, PrintMethodHandleStubs, false, \ 400560484Sobrien "Print generated stub code for method handles") \ 400660484Sobrien \ 400760484Sobrien develop(bool, TraceMethodHandles, false, \ 400860484Sobrien "trace internal method handle operations") \ 400960484Sobrien \ 401060484Sobrien diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 401160484Sobrien "perform extra checks when constructing method handles") \ 401260484Sobrien \ 401360484Sobrien diagnostic(bool, ShowHiddenFrames, false, \ 401460484Sobrien "show method handle implementation frames (usually hidden)") \ 401560484Sobrien \ 401660484Sobrien experimental(bool, TrustFinalNonStaticFields, false, \ 401760484Sobrien "trust final non-static declarations for constant folding") \ 401860484Sobrien \ 401960484Sobrien diagnostic(bool, FoldStableValues, true, \ 402060484Sobrien "Optimize loads from stable fields (marked w/ @Stable)") \ 402160484Sobrien \ 402260484Sobrien develop(bool, TraceInvokeDynamic, false, \ 402360484Sobrien "trace internal invoke dynamic operations") \ 402460484Sobrien \ 402560484Sobrien diagnostic(bool, PauseAtStartup, false, \ 402660484Sobrien "Causes the VM to pause at startup time and wait for the pause " \ 402760484Sobrien "file to be removed (default: ./vm.paused.<pid>)") \ 402860484Sobrien \ 402960484Sobrien diagnostic(ccstr, PauseAtStartupFile, NULL, \ 403060484Sobrien "The file to create and for whose removal to await when pausing " \ 403160484Sobrien "at startup. (default: ./vm.paused.<pid>)") \ 403260484Sobrien \ 403360484Sobrien diagnostic(bool, PauseAtExit, false, \ 403460484Sobrien "Pause and wait for keypress on exit if a debugger is attached") \ 403560484Sobrien \ 403660484Sobrien product(bool, ExtendedDTraceProbes, false, \ 403760484Sobrien "Enable performance-impacting dtrace probes") \ 403860484Sobrien \ 403960484Sobrien product(bool, DTraceMethodProbes, false, \ 404060484Sobrien "Enable dtrace probes for method-entry and method-exit") \ 404160484Sobrien \ 404260484Sobrien product(bool, DTraceAllocProbes, false, \ 404360484Sobrien "Enable dtrace probes for object allocation") \ 404460484Sobrien \ 404560484Sobrien product(bool, DTraceMonitorProbes, false, \ 404660484Sobrien "Enable dtrace probes for monitor events") \ 404760484Sobrien \ 404860484Sobrien product(bool, RelaxAccessControlCheck, false, \ 404960484Sobrien "Relax the access control checks in the verifier") \ 405060484Sobrien \ 405160484Sobrien product(uintx, StringTableSize, defaultStringTableSize, \ 405260484Sobrien "Number of buckets in the interned String table") \ 405360484Sobrien range(minimumStringTableSize, 111*defaultStringTableSize) \ 405460484Sobrien \ 405560484Sobrien experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \ 405660484Sobrien "Number of buckets in the JVM internal Symbol table") \ 405760484Sobrien range(minimumSymbolTableSize, 111*defaultSymbolTableSize) \ 405860484Sobrien \ 405960484Sobrien product(bool, UseStringDeduplication, false, \ 406060484Sobrien "Use string deduplication") \ 406160484Sobrien \ 406260484Sobrien product(bool, PrintStringDeduplicationStatistics, false, \ 406360484Sobrien "Print string deduplication statistics") \ 406460484Sobrien \ 406560484Sobrien product(uintx, StringDeduplicationAgeThreshold, 3, \ 406660484Sobrien "A string must reach this age (or be promoted to an old region) " \ 406760484Sobrien "to be considered for deduplication") \ 406860484Sobrien range(1, markOopDesc::max_age) \ 406960484Sobrien \ 407060484Sobrien diagnostic(bool, StringDeduplicationResizeALot, false, \ 407160484Sobrien "Force table resize every time the table is scanned") \ 407260484Sobrien \ 407360484Sobrien diagnostic(bool, StringDeduplicationRehashALot, false, \ 407460484Sobrien "Force table rehash every time the table is scanned") \ 407560484Sobrien \ 407660484Sobrien develop(bool, TraceDefaultMethods, false, \ 407760484Sobrien "Trace the default method processing steps") \ 407860484Sobrien \ 407960484Sobrien develop(bool, VerifyGenericSignatures, false, \ 408060484Sobrien "Abort VM on erroneous or inconsistent generic signatures") \ 408160484Sobrien \ 408260484Sobrien diagnostic(bool, WhiteBoxAPI, false, \ 408360484Sobrien "Enable internal testing APIs") \ 408460484Sobrien \ 408560484Sobrien product(bool, PrintGCCause, true, \ 408660484Sobrien "Include GC cause in GC logging") \ 408760484Sobrien \ 408860484Sobrien experimental(intx, SurvivorAlignmentInBytes, 0, \ 408960484Sobrien "Default survivor space alignment in bytes") \ 409060484Sobrien constraint(SurvivorAlignmentInBytesConstraintFunc) \ 409160484Sobrien \ 409260484Sobrien product(bool , AllowNonVirtualCalls, false, \ 409360484Sobrien "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \ 409460484Sobrien \ 409560484Sobrien product(ccstr, DumpLoadedClassList, NULL, \ 409660484Sobrien "Dump the names all loaded classes, that could be stored into " \ 409760484Sobrien "the CDS archive, in the specified file") \ 409860484Sobrien \ 409960484Sobrien product(ccstr, SharedClassListFile, NULL, \ 410060484Sobrien "Override the default CDS class list") \ 410160484Sobrien \ 410260484Sobrien diagnostic(ccstr, SharedArchiveFile, NULL, \ 410360484Sobrien "Override the default location of the CDS archive file") \ 410460484Sobrien \ 410560484Sobrien product(ccstr, ExtraSharedClassListFile, NULL, \ 410660484Sobrien "Extra classlist for building the CDS archive file") \ 410760484Sobrien \ 410860484Sobrien experimental(size_t, ArrayAllocatorMallocLimit, \ 410960484Sobrien SOLARIS_ONLY(64*K) NOT_SOLARIS((size_t)-1), \ 411060484Sobrien "Allocation less than this value will be allocated " \ 411160484Sobrien "using malloc. Larger allocations will use mmap.") \ 411260484Sobrien \ 411360484Sobrien experimental(bool, AlwaysAtomicAccesses, false, \ 411460484Sobrien "Accesses to all variables should always be atomic") \ 411560484Sobrien \ 411660484Sobrien product(bool, EnableTracing, false, \ 411760484Sobrien "Enable event-based tracing") \ 411860484Sobrien \ 411960484Sobrien product(bool, UseLockedTracing, false, \ 412060484Sobrien "Use locked-tracing when doing event-based tracing") \ 412160484Sobrien \ 412260484Sobrien diagnostic(bool, UseUnalignedAccesses, false, \ 412360484Sobrien "Use unaligned memory accesses in sun.misc.Unsafe") \ 412460484Sobrien \ 412560484Sobrien product_pd(bool, PreserveFramePointer, \ 412660484Sobrien "Use the FP register for holding the frame pointer " \ 412760484Sobrien "and not as a general purpose register.") 412860484Sobrien 412960484Sobrien/* 413060484Sobrien * Macros for factoring of globals 413160484Sobrien */ 413260484Sobrien 413360484Sobrien// Interface macros 413460484Sobrien#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 413560484Sobrien#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 413660484Sobrien#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 413760484Sobrien#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 413860484Sobrien#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 413960484Sobrien#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 414060484Sobrien#ifdef PRODUCT 414160484Sobrien#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type CONST_##name; const type name = value; 414260484Sobrien#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type CONST_##name; const type name = pd_##name; 414360484Sobrien#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type CONST_##name; 414460484Sobrien#else 414560484Sobrien#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 414660484Sobrien#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 414760484Sobrien#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 414860484Sobrien#endif // PRODUCT 414960484Sobrien// Special LP64 flags, product only needed for now. 415060484Sobrien#ifdef _LP64 415160484Sobrien#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 415260484Sobrien#else 415360484Sobrien#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 415460484Sobrien#endif // _LP64 415560484Sobrien 415660484Sobrien// Implementation macros 415760484Sobrien#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 415860484Sobrien#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 415960484Sobrien#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 416060484Sobrien#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 416160484Sobrien#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 416260484Sobrien#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 416360484Sobrien#ifdef PRODUCT 416460484Sobrien#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type CONST_##name = value; 416560484Sobrien#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type CONST_##name = pd_##name; 416660484Sobrien#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type CONST_##name = value; 416760484Sobrien#else 416860484Sobrien#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 416960484Sobrien#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 417060484Sobrien#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 417160484Sobrien#endif // PRODUCT 417260484Sobrien#ifdef _LP64 417360484Sobrien#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 417460484Sobrien#else 417560484Sobrien#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 417660484Sobrien#endif // _LP64 417760484Sobrien 417860484Sobrien// Only materialize src code for range checking when required, ignore otherwise 417960484Sobrien#define IGNORE_RANGE(a, b) 418060484Sobrien// Only materialize src code for contraint checking when required, ignore otherwise 418160484Sobrien#define IGNORE_CONSTRAINT(func) 418260484Sobrien 418360484SobrienRUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, \ 418460484Sobrien DECLARE_PD_DEVELOPER_FLAG, \ 418560484Sobrien DECLARE_PRODUCT_FLAG, \ 418660484Sobrien DECLARE_PD_PRODUCT_FLAG, \ 418760484Sobrien DECLARE_DIAGNOSTIC_FLAG, \ 418860484Sobrien DECLARE_EXPERIMENTAL_FLAG, \ 418960484Sobrien DECLARE_NOTPRODUCT_FLAG, \ 419060484Sobrien DECLARE_MANAGEABLE_FLAG, \ 419160484Sobrien DECLARE_PRODUCT_RW_FLAG, \ 419260484Sobrien DECLARE_LP64_PRODUCT_FLAG, \ 419360484Sobrien IGNORE_RANGE, \ 419460484Sobrien IGNORE_CONSTRAINT) 419560484Sobrien 419660484SobrienRUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, \ 419760484Sobrien DECLARE_PD_DEVELOPER_FLAG, \ 419860484Sobrien DECLARE_PRODUCT_FLAG, \ 419960484Sobrien DECLARE_PD_PRODUCT_FLAG, \ 420060484Sobrien DECLARE_DIAGNOSTIC_FLAG, \ 420160484Sobrien DECLARE_NOTPRODUCT_FLAG, \ 420260484Sobrien IGNORE_RANGE, \ 420360484Sobrien IGNORE_CONSTRAINT) 420460484Sobrien 420560484SobrienARCH_FLAGS(DECLARE_DEVELOPER_FLAG, \ 420660484Sobrien DECLARE_PRODUCT_FLAG, \ 420760484Sobrien DECLARE_DIAGNOSTIC_FLAG, \ 420860484Sobrien DECLARE_EXPERIMENTAL_FLAG, \ 420960484Sobrien DECLARE_NOTPRODUCT_FLAG, \ 421060484Sobrien IGNORE_RANGE, \ 421160484Sobrien IGNORE_CONSTRAINT) 421260484Sobrien 421360484Sobrien// Extensions 421460484Sobrien 421560484Sobrien#include "runtime/globals_ext.hpp" 421660484Sobrien 421760484Sobrien#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 421860484Sobrien