globals.hpp revision 3798:cae17c597196
138517Sdfr/* 238517Sdfr * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 338517Sdfr * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 438517Sdfr * 538517Sdfr * This code is free software; you can redistribute it and/or modify it 638517Sdfr * under the terms of the GNU General Public License version 2 only, as 738517Sdfr * published by the Free Software Foundation. 838517Sdfr * 938517Sdfr * This code is distributed in the hope that it will be useful, but WITHOUT 1038517Sdfr * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1138517Sdfr * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1238517Sdfr * version 2 for more details (a copy is included in the LICENSE file that 1338517Sdfr * accompanied this code). 1438517Sdfr * 1538517Sdfr * You should have received a copy of the GNU General Public License version 1638517Sdfr * 2 along with this work; if not, write to the Free Software Foundation, 1738517Sdfr * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1838517Sdfr * 1938517Sdfr * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2038517Sdfr * or visit www.oracle.com if you need additional information or have any 2138517Sdfr * questions. 2238517Sdfr * 2338517Sdfr */ 2438517Sdfr 2538517Sdfr#ifndef SHARE_VM_RUNTIME_GLOBALS_HPP 2650477Speter#define SHARE_VM_RUNTIME_GLOBALS_HPP 2738517Sdfr 2838517Sdfr#include "utilities/debug.hpp" 2938517Sdfr 3038517Sdfr// use this for flags that are true per default in the tiered build 3138517Sdfr// but false in non-tiered builds, and vice versa 3238517Sdfr#ifdef TIERED 3348797Salc#define trueInTiered true 3438517Sdfr#define falseInTiered false 3548797Salc#else 3648797Salc#define trueInTiered false 3748797Salc#define falseInTiered true 3848797Salc#endif 3948797Salc 4048797Salc#ifdef TARGET_ARCH_x86 4148797Salc# include "globals_x86.hpp" 4248797Salc#endif 4348797Salc#ifdef TARGET_ARCH_sparc 4448797Salc# include "globals_sparc.hpp" 4548797Salc#endif 4648797Salc#ifdef TARGET_ARCH_zero 4748797Salc# include "globals_zero.hpp" 4848797Salc#endif 4966695Sjhb#ifdef TARGET_ARCH_arm 5048797Salc# include "globals_arm.hpp" 5148797Salc#endif 5248797Salc#ifdef TARGET_ARCH_ppc 5348797Salc# include "globals_ppc.hpp" 5448797Salc#endif 5566695Sjhb#ifdef TARGET_OS_FAMILY_linux 5638517Sdfr# include "globals_linux.hpp" 5738517Sdfr#endif 5848797Salc#ifdef TARGET_OS_FAMILY_solaris 5949999Salc# include "globals_solaris.hpp" 6049999Salc#endif 6149999Salc#ifdef TARGET_OS_FAMILY_windows 6249999Salc# include "globals_windows.hpp" 6349999Salc#endif 6449999Salc#ifdef TARGET_OS_FAMILY_bsd 6548797Salc# include "globals_bsd.hpp" 6649999Salc#endif 6749999Salc#ifdef TARGET_OS_ARCH_linux_x86 6867351Sjhb# include "globals_linux_x86.hpp" 6949999Salc#endif 7066695Sjhb#ifdef TARGET_OS_ARCH_linux_sparc 7165514Sphk# include "globals_linux_sparc.hpp" 7271085Sjhb#endif 7371085Sjhb#ifdef TARGET_OS_ARCH_linux_zero 7471085Sjhb# include "globals_linux_zero.hpp" 7571085Sjhb#endif 7649999Salc#ifdef TARGET_OS_ARCH_solaris_x86 7772358Smarkm# include "globals_solaris_x86.hpp" 7849999Salc#endif 7965514Sphk#ifdef TARGET_OS_ARCH_solaris_sparc 8065514Sphk# include "globals_solaris_sparc.hpp" 8172358Smarkm#endif 8248797Salc#ifdef TARGET_OS_ARCH_windows_x86 8372358Smarkm# include "globals_windows_x86.hpp" 8472358Smarkm#endif 8548797Salc#ifdef TARGET_OS_ARCH_linux_arm 8672358Smarkm# include "globals_linux_arm.hpp" 8738517Sdfr#endif 8872358Smarkm#ifdef TARGET_OS_ARCH_linux_ppc 8948797Salc# include "globals_linux_ppc.hpp" 9048797Salc#endif 9148797Salc#ifdef TARGET_OS_ARCH_bsd_x86 9248797Salc# include "globals_bsd_x86.hpp" 9348797Salc#endif 9448797Salc#ifdef TARGET_OS_ARCH_bsd_zero 9549043Salc# include "globals_bsd_zero.hpp" 9648797Salc#endif 9748797Salc#ifdef COMPILER1 9849043Salc#ifdef TARGET_ARCH_x86 9949043Salc# include "c1_globals_x86.hpp" 10048797Salc#endif 10151938Speter#ifdef TARGET_ARCH_sparc 10265514Sphk# include "c1_globals_sparc.hpp" 10365514Sphk#endif 10465514Sphk#ifdef TARGET_ARCH_arm 10565514Sphk# include "c1_globals_arm.hpp" 10665514Sphk#endif 10765514Sphk#ifdef TARGET_ARCH_ppc 10865514Sphk# include "c1_globals_ppc.hpp" 10965514Sphk#endif 11065514Sphk#ifdef TARGET_OS_FAMILY_linux 11165514Sphk# include "c1_globals_linux.hpp" 11265514Sphk#endif 11365514Sphk#ifdef TARGET_OS_FAMILY_solaris 11465514Sphk# include "c1_globals_solaris.hpp" 11565514Sphk#endif 11665514Sphk#ifdef TARGET_OS_FAMILY_windows 11765514Sphk# include "c1_globals_windows.hpp" 11865514Sphk#endif 11965514Sphk#ifdef TARGET_OS_FAMILY_bsd 12065514Sphk# include "c1_globals_bsd.hpp" 12165514Sphk#endif 12265514Sphk#endif 12365514Sphk#ifdef COMPILER2 12465514Sphk#ifdef TARGET_ARCH_x86 12565514Sphk# include "c2_globals_x86.hpp" 12665514Sphk#endif 12765514Sphk#ifdef TARGET_ARCH_sparc 12865514Sphk# include "c2_globals_sparc.hpp" 12965514Sphk#endif 13065514Sphk#ifdef TARGET_ARCH_arm 13165514Sphk# include "c2_globals_arm.hpp" 13265514Sphk#endif 13365514Sphk#ifdef TARGET_OS_FAMILY_linux 13465514Sphk# include "c2_globals_linux.hpp" 13565514Sphk#endif 13665514Sphk#ifdef TARGET_OS_FAMILY_solaris 13765514Sphk# include "c2_globals_solaris.hpp" 13865514Sphk#endif 13965514Sphk#ifdef TARGET_OS_FAMILY_windows 14065514Sphk# include "c2_globals_windows.hpp" 14165514Sphk#endif 14265514Sphk#ifdef TARGET_OS_FAMILY_bsd 14365514Sphk# include "c2_globals_bsd.hpp" 14465514Sphk#endif 14565514Sphk#endif 14665514Sphk#ifdef SHARK 14765514Sphk#ifdef TARGET_ARCH_zero 14865514Sphk# include "shark_globals_zero.hpp" 14965514Sphk#endif 15065514Sphk#endif 15165514Sphk 15265514Sphk#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) 15365514Sphkdefine_pd_global(bool, BackgroundCompilation, false); 15465514Sphkdefine_pd_global(bool, UseTLAB, false); 15565514Sphkdefine_pd_global(bool, CICompileOSR, false); 15665514Sphkdefine_pd_global(bool, UseTypeProfile, false); 15765514Sphkdefine_pd_global(bool, UseOnStackReplacement, false); 15871023Sjhbdefine_pd_global(bool, InlineIntrinsics, false); 15967351Sjhbdefine_pd_global(bool, PreferInterpreterNativeStubs, true); 16067351Sjhbdefine_pd_global(bool, ProfileInterpreter, false); 16171023Sjhbdefine_pd_global(bool, ProfileTraps, false); 16271023Sjhbdefine_pd_global(bool, TieredCompilation, false); 16371023Sjhb 16467351Sjhbdefine_pd_global(intx, CompileThreshold, 0); 16571023Sjhbdefine_pd_global(intx, BackEdgeThreshold, 0); 16667351Sjhb 16767351Sjhbdefine_pd_global(intx, OnStackReplacePercentage, 0); 16867351Sjhbdefine_pd_global(bool, ResizeTLAB, false); 16967351Sjhbdefine_pd_global(intx, FreqInlineSize, 0); 17067351Sjhbdefine_pd_global(intx, InlineSmallCode, 0); 17167351Sjhbdefine_pd_global(intx, NewSizeThreadIncrease, 4*K); 17267351Sjhbdefine_pd_global(intx, InlineClassNatives, true); 17367351Sjhbdefine_pd_global(intx, InlineUnsafeOps, true); 17467351Sjhbdefine_pd_global(intx, InitialCodeCacheSize, 160*K); 17567351Sjhbdefine_pd_global(intx, ReservedCodeCacheSize, 32*M); 17667351Sjhbdefine_pd_global(intx, CodeCacheExpansionSize, 32*K); 17767351Sjhbdefine_pd_global(intx, CodeCacheMinBlockLength, 1); 17871023Sjhbdefine_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M)); 17967351Sjhbdefine_pd_global(bool, NeverActAsServerClassMachine, true); 18071023Sjhbdefine_pd_global(uint64_t,MaxRAM, 1ULL*G); 18171023Sjhb#define CI_COMPILER_COUNT 0 18271023Sjhb#else 18371023Sjhb 18471023Sjhb#ifdef COMPILER2 18571023Sjhb#define CI_COMPILER_COUNT 2 18671023Sjhb#else 18771141Sjhb#define CI_COMPILER_COUNT 1 18871023Sjhb#endif // COMPILER2 18971141Sjhb 19071023Sjhb#endif // no compilers 19171023Sjhb 19271023Sjhb// string type aliases used only in this file 19371023Sjhbtypedef const char* ccstr; 19471023Sjhbtypedef const char* ccstrlist; // represents string arguments which accumulate 19571023Sjhb 19671023Sjhbenum FlagValueOrigin { 19771023Sjhb DEFAULT = 0, 19871023Sjhb COMMAND_LINE = 1, 19971023Sjhb ENVIRON_VAR = 2, 20071023Sjhb CONFIG_FILE = 3, 20171023Sjhb MANAGEMENT = 4, 20271023Sjhb ERGONOMIC = 5, 20371023Sjhb ATTACH_ON_DEMAND = 6, 20471023Sjhb INTERNAL = 99 20571023Sjhb}; 20672358Smarkm 20771085Sjhbstruct Flag { 20867351Sjhb const char *type; 20972358Smarkm const char *name; 21071085Sjhb void* addr; 21171085Sjhb 21271085Sjhb NOT_PRODUCT(const char *doc;) 21371085Sjhb 21471085Sjhb const char *kind; 21571085Sjhb FlagValueOrigin origin; 21671085Sjhb 21771085Sjhb // points to all Flags static array 21871085Sjhb static Flag *flags; 21971085Sjhb 22071085Sjhb // number of flags 22171085Sjhb static size_t numFlags; 22271085Sjhb 22371085Sjhb static Flag* find_flag(char* name, size_t length, bool allow_locked = false); 22471085Sjhb 22571085Sjhb bool is_bool() const { return strcmp(type, "bool") == 0; } 22671085Sjhb bool get_bool() const { return *((bool*) addr); } 22771085Sjhb void set_bool(bool value) { *((bool*) addr) = value; } 22871085Sjhb 22971085Sjhb bool is_intx() const { return strcmp(type, "intx") == 0; } 23071023Sjhb intx get_intx() const { return *((intx*) addr); } 23171023Sjhb void set_intx(intx value) { *((intx*) addr) = value; } 23271023Sjhb 23371023Sjhb bool is_uintx() const { return strcmp(type, "uintx") == 0; } 23471023Sjhb uintx get_uintx() const { return *((uintx*) addr); } 23571085Sjhb void set_uintx(uintx value) { *((uintx*) addr) = value; } 23667351Sjhb 23767351Sjhb bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } 23871085Sjhb uint64_t get_uint64_t() const { return *((uint64_t*) addr); } 23971085Sjhb void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } 24071085Sjhb 24171085Sjhb bool is_double() const { return strcmp(type, "double") == 0; } 24271085Sjhb double get_double() const { return *((double*) addr); } 24371085Sjhb void set_double(double value) { *((double*) addr) = value; } 24471085Sjhb 24571085Sjhb bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } 24671085Sjhb bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } 24771085Sjhb ccstr get_ccstr() const { return *((ccstr*) addr); } 24871085Sjhb void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } 24971085Sjhb 25071085Sjhb bool is_unlocker() const; 25171085Sjhb bool is_unlocked() const; 25271085Sjhb bool is_writeable() const; 25371085Sjhb bool is_external() const; 25471085Sjhb 25571085Sjhb bool is_unlocker_ext() const; 25671085Sjhb bool is_unlocked_ext() const; 25771085Sjhb bool is_writeable_ext() const; 25871085Sjhb bool is_external_ext() const; 25971085Sjhb 26071085Sjhb void get_locked_message(char*, int) const; 26171085Sjhb void get_locked_message_ext(char*, int) const; 26271085Sjhb 26371085Sjhb void print_on(outputStream* st, bool withComments = false ); 26471085Sjhb void print_as_flag(outputStream* st); 26571085Sjhb}; 26671085Sjhb 26771085Sjhb// debug flags control various aspects of the VM and are global accessible 26871085Sjhb 26971085Sjhb// use FlagSetting to temporarily change some debug flag 27071085Sjhb// e.g. FlagSetting fs(DebugThisAndThat, true); 27171085Sjhb// restored to previous value upon leaving scope 27271085Sjhbclass FlagSetting { 27371085Sjhb bool val; 27471085Sjhb bool* flag; 27571085Sjhb public: 27671085Sjhb FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 27771085Sjhb ~FlagSetting() { *flag = val; } 27871085Sjhb}; 27971085Sjhb 28071085Sjhb 28171085Sjhbclass CounterSetting { 28271085Sjhb intx* counter; 28371085Sjhb public: 28471085Sjhb CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 28571085Sjhb ~CounterSetting() { (*counter)--; } 28671085Sjhb}; 28771085Sjhb 28871085Sjhb 28971085Sjhbclass IntFlagSetting { 29071085Sjhb intx val; 29171085Sjhb intx* flag; 29271085Sjhb public: 29371085Sjhb IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } 29471085Sjhb ~IntFlagSetting() { *flag = val; } 29571085Sjhb}; 29671085Sjhb 29771085Sjhb 29871085Sjhbclass DoubleFlagSetting { 29971085Sjhb double val; 30071085Sjhb double* flag; 30171085Sjhb public: 30271085Sjhb DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 30371085Sjhb ~DoubleFlagSetting() { *flag = val; } 30471085Sjhb}; 30571085Sjhb 30671085Sjhb 30771085Sjhbclass CommandLineFlags { 30871085Sjhb public: 30971085Sjhb static bool boolAt(char* name, size_t len, bool* value); 31071085Sjhb static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } 31171085Sjhb static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); 31271085Sjhb static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } 31371085Sjhb 31471085Sjhb static bool intxAt(char* name, size_t len, intx* value); 31571085Sjhb static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } 31671085Sjhb static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); 31771085Sjhb static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } 31871085Sjhb 31971085Sjhb static bool uintxAt(char* name, size_t len, uintx* value); 32071085Sjhb static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } 32171085Sjhb static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); 32271085Sjhb static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } 32371085Sjhb 32471085Sjhb static bool uint64_tAt(char* name, size_t len, uint64_t* value); 32571085Sjhb static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } 32671085Sjhb static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); 32771085Sjhb static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 32871085Sjhb 32971085Sjhb static bool doubleAt(char* name, size_t len, double* value); 33071085Sjhb static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } 33171085Sjhb static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); 33265514Sphk static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } 33365514Sphk 33465514Sphk static bool ccstrAt(char* name, size_t len, ccstr* value); 33565514Sphk static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } 33671085Sjhb static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); 33771085Sjhb static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } 33865514Sphk 33966695Sjhb // Returns false if name is not a command line flag. 34067351Sjhb static bool wasSetOnCmdline(const char* name, bool* value); 34167351Sjhb static void printSetFlags(outputStream* out); 34267351Sjhb 34367351Sjhb static void printFlags(outputStream* out, bool withComments); 34467351Sjhb 34567351Sjhb static void verify() PRODUCT_RETURN; 34667351Sjhb}; 34767351Sjhb 34867351Sjhb// use this for flags that are true by default in the debug version but 34967351Sjhb// false in the optimized version, and vice versa 35067351Sjhb#ifdef ASSERT 35167351Sjhb#define trueInDebug true 35267351Sjhb#define falseInDebug false 35367351Sjhb#else 35467351Sjhb#define trueInDebug false 35567351Sjhb#define falseInDebug true 35667351Sjhb#endif 35767351Sjhb 35867351Sjhb// use this for flags that are true per default in the product build 35967351Sjhb// but false in development builds, and vice versa 36067351Sjhb#ifdef PRODUCT 36167351Sjhb#define trueInProduct true 36267351Sjhb#define falseInProduct false 36367351Sjhb#else 36467351Sjhb#define trueInProduct false 36567351Sjhb#define falseInProduct true 36667351Sjhb#endif 36767351Sjhb 36867351Sjhb#ifdef JAVASE_EMBEDDED 36967351Sjhb#define falseInEmbedded false 37067351Sjhb#else 37167351Sjhb#define falseInEmbedded true 37267351Sjhb#endif 37367351Sjhb 37467351Sjhb// develop flags are settable / visible only during development and are constant in the PRODUCT version 37567351Sjhb// product flags are always settable / visible 37667351Sjhb// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 37767351Sjhb 37866695Sjhb// A flag must be declared with one of the following types: 37966695Sjhb// bool, intx, uintx, ccstr. 38066695Sjhb// The type "ccstr" is an alias for "const char*" and is used 38166695Sjhb// only in this file, because the macrology requires single-token type names. 38266695Sjhb 38366695Sjhb// Note: Diagnostic options not meant for VM tuning or for product modes. 38466695Sjhb// They are to be used for VM quality assurance or field diagnosis 38566695Sjhb// of VM bugs. They are hidden so that users will not be encouraged to 38666695Sjhb// try them as if they were VM ordinary execution options. However, they 38766695Sjhb// are available in the product version of the VM. Under instruction 38866695Sjhb// from support engineers, VM customers can turn them on to collect 38966695Sjhb// diagnostic information about VM problems. To use a VM diagnostic 39066695Sjhb// option, you must first specify +UnlockDiagnosticVMOptions. 39166695Sjhb// (This master switch also affects the behavior of -Xprintflags.) 39266695Sjhb// 39366695Sjhb// experimental flags are in support of features that are not 39466695Sjhb// part of the officially supported product, but are available 39566695Sjhb// for experimenting with. They could, for example, be performance 39666695Sjhb// features that may not have undergone full or rigorous QA, but which may 39766695Sjhb// help performance in some cases and released for experimentation 39866695Sjhb// by the community of users and developers. This flag also allows one to 39966695Sjhb// be able to build a fully supported product that nonetheless also 40066695Sjhb// ships with some unsupported, lightly tested, experimental features. 40166695Sjhb// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 40266695Sjhb// UnlockExperimentalVMOptions flag, which allows the control and 40366695Sjhb// modification of the experimental flags. 40466695Sjhb// 40566695Sjhb// Nota bene: neither diagnostic nor experimental options should be used casually, 40666695Sjhb// and they are not supported on production loads, except under explicit 40771085Sjhb// direction from support engineers. 40872358Smarkm// 40938517Sdfr// manageable flags are writeable external product flags. 410// They are dynamically writeable through the JDK management interface 411// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 412// These flags are external exported interface (see CCC). The list of 413// manageable flags can be queried programmatically through the management 414// interface. 415// 416// A flag can be made as "manageable" only if 417// - the flag is defined in a CCC as an external exported interface. 418// - the VM implementation supports dynamic setting of the flag. 419// This implies that the VM must *always* query the flag variable 420// and not reuse state related to the flag state at any given time. 421// - you want the flag to be queried programmatically by the customers. 422// 423// product_rw flags are writeable internal product flags. 424// They are like "manageable" flags but for internal/private use. 425// The list of product_rw flags are internal/private flags which 426// may be changed/removed in a future release. It can be set 427// through the management interface to get/set value 428// when the name of flag is supplied. 429// 430// A flag can be made as "product_rw" only if 431// - the VM implementation supports dynamic setting of the flag. 432// This implies that the VM must *always* query the flag variable 433// and not reuse state related to the flag state at any given time. 434// 435// Note that when there is a need to support develop flags to be writeable, 436// it can be done in the same way as product_rw. 437 438#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ 439 \ 440 lp64_product(bool, UseCompressedOops, false, \ 441 "Use 32-bit object references in 64-bit VM " \ 442 "lp64_product means flag is always constant in 32 bit VM") \ 443 \ 444 lp64_product(bool, UseCompressedKlassPointers, false, \ 445 "Use 32-bit klass pointers in 64-bit VM " \ 446 "lp64_product means flag is always constant in 32 bit VM") \ 447 \ 448 notproduct(bool, CheckCompressedOops, true, \ 449 "generate checks in encoding/decoding code in debug VM") \ 450 \ 451 product_pd(uintx, HeapBaseMinAddress, \ 452 "OS specific low limit for heap base address") \ 453 \ 454 diagnostic(bool, PrintCompressedOopsMode, false, \ 455 "Print compressed oops base address and encoding mode") \ 456 \ 457 lp64_product(intx, ObjectAlignmentInBytes, 8, \ 458 "Default object alignment in bytes, 8 is minimum") \ 459 \ 460 /* UseMembar is theoretically a temp flag used for memory barrier \ 461 * removal testing. It was supposed to be removed before FCS but has \ 462 * been re-added (see 6401008) */ \ 463 product_pd(bool, UseMembar, \ 464 "(Unstable) Issues membars on thread state transitions") \ 465 \ 466 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ 467 * that don't support it. This will be replaced by processor detection \ 468 * logic. \ 469 */ \ 470 product(bool, UsePPCLWSYNC, true, \ 471 "Use lwsync instruction if true, else use slower sync") \ 472 \ 473 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ 474 "Whether to clean the chunk pool asynchronously") \ 475 \ 476 /* Temporary: See 6948537 */ \ 477 experimental(bool, UseMemSetInBOT, true, \ 478 "(Unstable) uses memset in BOT updates in GC code") \ 479 \ 480 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 481 "Enable normal processing of flags relating to field diagnostics")\ 482 \ 483 experimental(bool, UnlockExperimentalVMOptions, false, \ 484 "Enable normal processing of flags relating to experimental features")\ 485 \ 486 product(bool, JavaMonitorsInStackTrace, true, \ 487 "Print info. about Java monitor locks when the stacks are dumped")\ 488 \ 489 product_pd(bool, UseLargePages, \ 490 "Use large page memory") \ 491 \ 492 product_pd(bool, UseLargePagesIndividualAllocation, \ 493 "Allocate large pages individually for better affinity") \ 494 \ 495 develop(bool, LargePagesIndividualAllocationInjectError, false, \ 496 "Fail large pages individual allocation") \ 497 \ 498 develop(bool, TracePageSizes, false, \ 499 "Trace page size selection and usage.") \ 500 \ 501 product(bool, UseNUMA, false, \ 502 "Use NUMA if available") \ 503 \ 504 product(bool, UseNUMAInterleaving, false, \ 505 "Interleave memory across NUMA nodes if available") \ 506 \ 507 product(uintx, NUMAInterleaveGranularity, 2*M, \ 508 "Granularity to use for NUMA interleaving on Windows OS") \ 509 \ 510 product(bool, ForceNUMA, false, \ 511 "Force NUMA optimizations on single-node/UMA systems") \ 512 \ 513 product(intx, NUMAChunkResizeWeight, 20, \ 514 "Percentage (0-100) used to weight the current sample when " \ 515 "computing exponentially decaying average for " \ 516 "AdaptiveNUMAChunkSizing") \ 517 \ 518 product(intx, NUMASpaceResizeRate, 1*G, \ 519 "Do not reallocate more that this amount per collection") \ 520 \ 521 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 522 "Enable adaptive chunk sizing for NUMA") \ 523 \ 524 product(bool, NUMAStats, false, \ 525 "Print NUMA stats in detailed heap information") \ 526 \ 527 product(intx, NUMAPageScanRate, 256, \ 528 "Maximum number of pages to include in the page scan procedure") \ 529 \ 530 product_pd(bool, NeedsDeoptSuspend, \ 531 "True for register window machines (sparc/ia64)") \ 532 \ 533 product(intx, UseSSE, 99, \ 534 "Highest supported SSE instructions set on x86/x64") \ 535 \ 536 product(bool, UseAES, false, \ 537 "Control whether AES instructions can be used on x86/x64") \ 538 \ 539 product(uintx, LargePageSizeInBytes, 0, \ 540 "Large page size (0 to let VM choose the page size") \ 541 \ 542 product(uintx, LargePageHeapSizeThreshold, 128*M, \ 543 "Use large pages if max heap is at least this big") \ 544 \ 545 product(bool, ForceTimeHighResolution, false, \ 546 "Using high time resolution(For Win32 only)") \ 547 \ 548 develop(bool, TraceItables, false, \ 549 "Trace initialization and use of itables") \ 550 \ 551 develop(bool, TracePcPatching, false, \ 552 "Trace usage of frame::patch_pc") \ 553 \ 554 develop(bool, TraceJumps, false, \ 555 "Trace assembly jumps in thread ring buffer") \ 556 \ 557 develop(bool, TraceRelocator, false, \ 558 "Trace the bytecode relocator") \ 559 \ 560 develop(bool, TraceLongCompiles, false, \ 561 "Print out every time compilation is longer than " \ 562 "a given threashold") \ 563 \ 564 develop(bool, SafepointALot, false, \ 565 "Generates a lot of safepoints. Works with " \ 566 "GuaranteedSafepointInterval") \ 567 \ 568 product_pd(bool, BackgroundCompilation, \ 569 "A thread requesting compilation is not blocked during " \ 570 "compilation") \ 571 \ 572 product(bool, PrintVMQWaitTime, false, \ 573 "Prints out the waiting time in VM operation queue") \ 574 \ 575 develop(bool, NoYieldsInMicrolock, false, \ 576 "Disable yields in microlock") \ 577 \ 578 develop(bool, TraceOopMapGeneration, false, \ 579 "Shows oopmap generation") \ 580 \ 581 product(bool, MethodFlushing, true, \ 582 "Reclamation of zombie and not-entrant methods") \ 583 \ 584 develop(bool, VerifyStack, false, \ 585 "Verify stack of each thread when it is entering a runtime call") \ 586 \ 587 diagnostic(bool, ForceUnreachable, false, \ 588 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ 589 \ 590 notproduct(bool, StressDerivedPointers, false, \ 591 "Force scavenge when a derived pointers is detected on stack " \ 592 "after rtm call") \ 593 \ 594 develop(bool, TraceDerivedPointers, false, \ 595 "Trace traversal of derived pointers on stack") \ 596 \ 597 notproduct(bool, TraceCodeBlobStacks, false, \ 598 "Trace stack-walk of codeblobs") \ 599 \ 600 product(bool, PrintJNIResolving, false, \ 601 "Used to implement -v:jni") \ 602 \ 603 notproduct(bool, PrintRewrites, false, \ 604 "Print methods that are being rewritten") \ 605 \ 606 product(bool, UseInlineCaches, true, \ 607 "Use Inline Caches for virtual calls ") \ 608 \ 609 develop(bool, InlineArrayCopy, true, \ 610 "inline arraycopy native that is known to be part of " \ 611 "base library DLL") \ 612 \ 613 develop(bool, InlineObjectHash, true, \ 614 "inline Object::hashCode() native that is known to be part " \ 615 "of base library DLL") \ 616 \ 617 develop(bool, InlineNatives, true, \ 618 "inline natives that are known to be part of base library DLL") \ 619 \ 620 develop(bool, InlineMathNatives, true, \ 621 "inline SinD, CosD, etc.") \ 622 \ 623 develop(bool, InlineClassNatives, true, \ 624 "inline Class.isInstance, etc") \ 625 \ 626 develop(bool, InlineThreadNatives, true, \ 627 "inline Thread.currentThread, etc") \ 628 \ 629 develop(bool, InlineUnsafeOps, true, \ 630 "inline memory ops (native methods) from sun.misc.Unsafe") \ 631 \ 632 product(bool, CriticalJNINatives, true, \ 633 "check for critical JNI entry points") \ 634 \ 635 notproduct(bool, StressCriticalJNINatives, false, \ 636 "Exercise register saving code in critical natives") \ 637 \ 638 product(bool, UseSSE42Intrinsics, false, \ 639 "SSE4.2 versions of intrinsics") \ 640 \ 641 product(bool, UseAESIntrinsics, false, \ 642 "use intrinsics for AES versions of crypto") \ 643 \ 644 develop(bool, TraceCallFixup, false, \ 645 "traces all call fixups") \ 646 \ 647 develop(bool, DeoptimizeALot, false, \ 648 "deoptimize at every exit from the runtime system") \ 649 \ 650 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 651 "a comma separated list of bcis to deoptimize at") \ 652 \ 653 product(bool, DeoptimizeRandom, false, \ 654 "deoptimize random frames on random exit from the runtime system")\ 655 \ 656 notproduct(bool, ZombieALot, false, \ 657 "creates zombies (non-entrant) at exit from the runt. system") \ 658 \ 659 product(bool, UnlinkSymbolsALot, false, \ 660 "unlink unreferenced symbols from the symbol table at safepoints")\ 661 \ 662 notproduct(bool, WalkStackALot, false, \ 663 "trace stack (no print) at every exit from the runtime system") \ 664 \ 665 product(bool, Debugging, false, \ 666 "set when executing debug methods in debug.ccp " \ 667 "(to prevent triggering assertions)") \ 668 \ 669 notproduct(bool, StrictSafepointChecks, trueInDebug, \ 670 "Enable strict checks that safepoints cannot happen for threads " \ 671 "that used No_Safepoint_Verifier") \ 672 \ 673 notproduct(bool, VerifyLastFrame, false, \ 674 "Verify oops on last frame on entry to VM") \ 675 \ 676 develop(bool, TraceHandleAllocation, false, \ 677 "Prints out warnings when suspicious many handles are allocated") \ 678 \ 679 product(bool, UseCompilerSafepoints, true, \ 680 "Stop at safepoints in compiled code") \ 681 \ 682 product(bool, UseSplitVerifier, true, \ 683 "use split verifier with StackMapTable attributes") \ 684 \ 685 product(bool, FailOverToOldVerifier, true, \ 686 "fail over to old verifier when split verifier fails") \ 687 \ 688 develop(bool, ShowSafepointMsgs, false, \ 689 "Show msg. about safepoint synch.") \ 690 \ 691 product(bool, SafepointTimeout, false, \ 692 "Time out and warn or fail after SafepointTimeoutDelay " \ 693 "milliseconds if failed to reach safepoint") \ 694 \ 695 develop(bool, DieOnSafepointTimeout, false, \ 696 "Die upon failure to reach safepoint (see SafepointTimeout)") \ 697 \ 698 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 699 /* typically, at most a few retries are needed */ \ 700 product(intx, SuspendRetryCount, 50, \ 701 "Maximum retry count for an external suspend request") \ 702 \ 703 product(intx, SuspendRetryDelay, 5, \ 704 "Milliseconds to delay per retry (* current_retry_count)") \ 705 \ 706 product(bool, AssertOnSuspendWaitFailure, false, \ 707 "Assert/Guarantee on external suspend wait failure") \ 708 \ 709 product(bool, TraceSuspendWaitFailures, false, \ 710 "Trace external suspend wait failures") \ 711 \ 712 product(bool, MaxFDLimit, true, \ 713 "Bump the number of file descriptors to max in solaris.") \ 714 \ 715 diagnostic(bool, LogEvents, true, \ 716 "Enable the various ring buffer event logs") \ 717 \ 718 diagnostic(intx, LogEventsBufferEntries, 10, \ 719 "Enable the various ring buffer event logs") \ 720 \ 721 product(bool, BytecodeVerificationRemote, true, \ 722 "Enables the Java bytecode verifier for remote classes") \ 723 \ 724 product(bool, BytecodeVerificationLocal, false, \ 725 "Enables the Java bytecode verifier for local classes") \ 726 \ 727 develop(bool, ForceFloatExceptions, trueInDebug, \ 728 "Force exceptions on FP stack under/overflow") \ 729 \ 730 develop(bool, VerifyStackAtCalls, false, \ 731 "Verify that the stack pointer is unchanged after calls") \ 732 \ 733 develop(bool, TraceJavaAssertions, false, \ 734 "Trace java language assertions") \ 735 \ 736 notproduct(bool, CheckAssertionStatusDirectives, false, \ 737 "temporary - see javaClasses.cpp") \ 738 \ 739 notproduct(bool, PrintMallocFree, false, \ 740 "Trace calls to C heap malloc/free allocation") \ 741 \ 742 product(bool, PrintOopAddress, false, \ 743 "Always print the location of the oop") \ 744 \ 745 notproduct(bool, VerifyCodeCacheOften, false, \ 746 "Verify compiled-code cache often") \ 747 \ 748 develop(bool, ZapDeadCompiledLocals, false, \ 749 "Zap dead locals in compiler frames") \ 750 \ 751 notproduct(bool, ZapDeadLocalsOld, false, \ 752 "Zap dead locals (old version, zaps all frames when " \ 753 "entering the VM") \ 754 \ 755 notproduct(bool, CheckOopishValues, false, \ 756 "Warn if value contains oop ( requires ZapDeadLocals)") \ 757 \ 758 develop(bool, UseMallocOnly, false, \ 759 "use only malloc/free for allocation (no resource area/arena)") \ 760 \ 761 develop(bool, PrintMalloc, false, \ 762 "print all malloc/free calls") \ 763 \ 764 develop(bool, PrintMallocStatistics, false, \ 765 "print malloc/free statistics") \ 766 \ 767 develop(bool, ZapResourceArea, trueInDebug, \ 768 "Zap freed resource/arena space with 0xABABABAB") \ 769 \ 770 notproduct(bool, ZapVMHandleArea, trueInDebug, \ 771 "Zap freed VM handle space with 0xBCBCBCBC") \ 772 \ 773 develop(bool, ZapJNIHandleArea, trueInDebug, \ 774 "Zap freed JNI handle space with 0xFEFEFEFE") \ 775 \ 776 notproduct(bool, ZapStackSegments, trueInDebug, \ 777 "Zap allocated/freed Stack segments with 0xFADFADED") \ 778 \ 779 develop(bool, ZapUnusedHeapArea, trueInDebug, \ 780 "Zap unused heap space with 0xBAADBABE") \ 781 \ 782 develop(bool, TraceZapUnusedHeapArea, false, \ 783 "Trace zapping of unused heap space") \ 784 \ 785 develop(bool, CheckZapUnusedHeapArea, false, \ 786 "Check zapping of unused heap space") \ 787 \ 788 develop(bool, ZapFillerObjects, trueInDebug, \ 789 "Zap filler objects with 0xDEAFBABE") \ 790 \ 791 develop(bool, PrintVMMessages, true, \ 792 "Print vm messages on console") \ 793 \ 794 product(bool, PrintGCApplicationConcurrentTime, false, \ 795 "Print the time the application has been running") \ 796 \ 797 product(bool, PrintGCApplicationStoppedTime, false, \ 798 "Print the time the application has been stopped") \ 799 \ 800 diagnostic(bool, VerboseVerification, false, \ 801 "Display detailed verification details") \ 802 \ 803 notproduct(uintx, ErrorHandlerTest, 0, \ 804 "If > 0, provokes an error after VM initialization; the value" \ 805 "determines which error to provoke. See test_error_handler()" \ 806 "in debug.cpp.") \ 807 \ 808 develop(bool, Verbose, false, \ 809 "Prints additional debugging information from other modes") \ 810 \ 811 develop(bool, PrintMiscellaneous, false, \ 812 "Prints uncategorized debugging information (requires +Verbose)") \ 813 \ 814 develop(bool, WizardMode, false, \ 815 "Prints much more debugging information") \ 816 \ 817 product(bool, ShowMessageBoxOnError, false, \ 818 "Keep process alive on VM fatal error") \ 819 \ 820 product(bool, CreateMinidumpOnCrash, false, \ 821 "Create minidump on VM fatal error") \ 822 \ 823 product_pd(bool, UseOSErrorReporting, \ 824 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 825 \ 826 product(bool, SuppressFatalErrorMessage, false, \ 827 "Do NO Fatal Error report [Avoid deadlock]") \ 828 \ 829 product(ccstrlist, OnError, "", \ 830 "Run user-defined commands on fatal error; see VMError.cpp " \ 831 "for examples") \ 832 \ 833 product(ccstrlist, OnOutOfMemoryError, "", \ 834 "Run user-defined commands on first java.lang.OutOfMemoryError") \ 835 \ 836 manageable(bool, HeapDumpBeforeFullGC, false, \ 837 "Dump heap to file before any major stop-world GC") \ 838 \ 839 manageable(bool, HeapDumpAfterFullGC, false, \ 840 "Dump heap to file after any major stop-world GC") \ 841 \ 842 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 843 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 844 \ 845 manageable(ccstr, HeapDumpPath, NULL, \ 846 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ 847 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ 848 "in the working directory)") \ 849 \ 850 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ 851 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 852 "when the heap usage is larger than this") \ 853 \ 854 develop(uintx, HeapDumpSegmentSize, 1*G, \ 855 "Approximate segment size when generating a segmented heap dump") \ 856 \ 857 develop(bool, BreakAtWarning, false, \ 858 "Execute breakpoint upon encountering VM warning") \ 859 \ 860 develop(bool, TraceVMOperation, false, \ 861 "Trace vm operations") \ 862 \ 863 develop(bool, UseFakeTimers, false, \ 864 "Tells whether the VM should use system time or a fake timer") \ 865 \ 866 product(ccstr, NativeMemoryTracking, "off", \ 867 "Native memory tracking options") \ 868 \ 869 diagnostic(bool, PrintNMTStatistics, false, \ 870 "Print native memory tracking summary data if it is on") \ 871 \ 872 diagnostic(bool, LogCompilation, false, \ 873 "Log compilation activity in detail to hotspot.log or LogFile") \ 874 \ 875 product(bool, PrintCompilation, false, \ 876 "Print compilations") \ 877 \ 878 diagnostic(bool, TraceNMethodInstalls, false, \ 879 "Trace nmethod intallation") \ 880 \ 881 diagnostic(intx, ScavengeRootsInCode, 2, \ 882 "0: do not allow scavengable oops in the code cache; " \ 883 "1: allow scavenging from the code cache; " \ 884 "2: emit as many constants as the compiler can see") \ 885 \ 886 product(bool, AlwaysRestoreFPU, false, \ 887 "Restore the FPU control word after every JNI call (expensive)") \ 888 \ 889 diagnostic(bool, PrintCompilation2, false, \ 890 "Print additional statistics per compilation") \ 891 \ 892 diagnostic(bool, PrintAdapterHandlers, false, \ 893 "Print code generated for i2c/c2i adapters") \ 894 \ 895 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 896 "Verify that i2c/c2i adapters are called properly") \ 897 \ 898 develop(bool, VerifyAdapterSharing, false, \ 899 "Verify that the code for shared adapters is the equivalent") \ 900 \ 901 diagnostic(bool, PrintAssembly, false, \ 902 "Print assembly code (using external disassembler.so)") \ 903 \ 904 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 905 "Options string passed to disassembler.so") \ 906 \ 907 diagnostic(bool, PrintNMethods, false, \ 908 "Print assembly code for nmethods when generated") \ 909 \ 910 diagnostic(bool, PrintNativeNMethods, false, \ 911 "Print assembly code for native nmethods when generated") \ 912 \ 913 develop(bool, PrintDebugInfo, false, \ 914 "Print debug information for all nmethods when generated") \ 915 \ 916 develop(bool, PrintRelocations, false, \ 917 "Print relocation information for all nmethods when generated") \ 918 \ 919 develop(bool, PrintDependencies, false, \ 920 "Print dependency information for all nmethods when generated") \ 921 \ 922 develop(bool, PrintExceptionHandlers, false, \ 923 "Print exception handler tables for all nmethods when generated") \ 924 \ 925 develop(bool, InterceptOSException, false, \ 926 "Starts debugger when an implicit OS (e.g., NULL) " \ 927 "exception happens") \ 928 \ 929 notproduct(bool, PrintCodeCache, false, \ 930 "Print the compiled_code cache when exiting") \ 931 \ 932 develop(bool, PrintCodeCache2, false, \ 933 "Print detailed info on the compiled_code cache when exiting") \ 934 \ 935 diagnostic(bool, PrintStubCode, false, \ 936 "Print generated stub code") \ 937 \ 938 product(bool, StackTraceInThrowable, true, \ 939 "Collect backtrace in throwable when exception happens") \ 940 \ 941 product(bool, OmitStackTraceInFastThrow, true, \ 942 "Omit backtraces for some 'hot' exceptions in optimized code") \ 943 \ 944 product(bool, ProfilerPrintByteCodeStatistics, false, \ 945 "Prints byte code statictics when dumping profiler output") \ 946 \ 947 product(bool, ProfilerRecordPC, false, \ 948 "Collects tick for each 16 byte interval of compiled code") \ 949 \ 950 product(bool, ProfileVM, false, \ 951 "Profiles ticks that fall within VM (either in the VM Thread " \ 952 "or VM code called through stubs)") \ 953 \ 954 product(bool, ProfileIntervals, false, \ 955 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ 956 \ 957 notproduct(bool, ProfilerCheckIntervals, false, \ 958 "Collect and print info on spacing of profiler ticks") \ 959 \ 960 develop(bool, PrintJVMWarnings, false, \ 961 "Prints warnings for unimplemented JVM functions") \ 962 \ 963 product(bool, PrintWarnings, true, \ 964 "Prints JVM warnings to output stream") \ 965 \ 966 notproduct(uintx, WarnOnStalledSpinLock, 0, \ 967 "Prints warnings for stalled SpinLocks") \ 968 \ 969 develop(bool, InitializeJavaLangSystem, true, \ 970 "Initialize java.lang.System - turn off for individual " \ 971 "method debugging") \ 972 \ 973 develop(bool, InitializeJavaLangString, true, \ 974 "Initialize java.lang.String - turn off for individual " \ 975 "method debugging") \ 976 \ 977 develop(bool, InitializeJavaLangExceptionsErrors, true, \ 978 "Initialize various error and exception classes - turn off for " \ 979 "individual method debugging") \ 980 \ 981 product(bool, RegisterFinalizersAtInit, true, \ 982 "Register finalizable objects at end of Object.<init> or " \ 983 "after allocation") \ 984 \ 985 develop(bool, RegisterReferences, true, \ 986 "Tells whether the VM should register soft/weak/final/phantom " \ 987 "references") \ 988 \ 989 develop(bool, IgnoreRewrites, false, \ 990 "Supress rewrites of bytecodes in the oopmap generator. " \ 991 "This is unsafe!") \ 992 \ 993 develop(bool, PrintCodeCacheExtension, false, \ 994 "Print extension of code cache") \ 995 \ 996 develop(bool, UsePrivilegedStack, true, \ 997 "Enable the security JVM functions") \ 998 \ 999 develop(bool, ProtectionDomainVerification, true, \ 1000 "Verifies protection domain before resolution in system " \ 1001 "dictionary") \ 1002 \ 1003 product(bool, ClassUnloading, true, \ 1004 "Do unloading of classes") \ 1005 \ 1006 develop(bool, DisableStartThread, false, \ 1007 "Disable starting of additional Java threads " \ 1008 "(for debugging only)") \ 1009 \ 1010 develop(bool, MemProfiling, false, \ 1011 "Write memory usage profiling to log file") \ 1012 \ 1013 notproduct(bool, PrintSystemDictionaryAtExit, false, \ 1014 "Prints the system dictionary at exit") \ 1015 \ 1016 experimental(intx, PredictedLoadedClassCount, 0, \ 1017 "Experimental: Tune loaded class cache starting size.") \ 1018 \ 1019 diagnostic(bool, UnsyncloadClass, false, \ 1020 "Unstable: VM calls loadClass unsynchronized. Custom " \ 1021 "class loader must call VM synchronized for findClass " \ 1022 "and defineClass.") \ 1023 \ 1024 product(bool, AlwaysLockClassLoader, false, \ 1025 "Require the VM to acquire the class loader lock before calling " \ 1026 "loadClass() even for class loaders registering " \ 1027 "as parallel capable") \ 1028 \ 1029 product(bool, AllowParallelDefineClass, false, \ 1030 "Allow parallel defineClass requests for class loaders " \ 1031 "registering as parallel capable") \ 1032 \ 1033 product(bool, MustCallLoadClassInternal, false, \ 1034 "Call loadClassInternal() rather than loadClass()") \ 1035 \ 1036 product_pd(bool, DontYieldALot, \ 1037 "Throw away obvious excess yield calls (for SOLARIS only)") \ 1038 \ 1039 product_pd(bool, ConvertSleepToYield, \ 1040 "Converts sleep(0) to thread yield " \ 1041 "(may be off for SOLARIS to improve GUI)") \ 1042 \ 1043 product(bool, ConvertYieldToSleep, false, \ 1044 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ 1045 "behavior (SOLARIS only)") \ 1046 \ 1047 product(bool, UseBoundThreads, true, \ 1048 "Bind user level threads to kernel threads (for SOLARIS only)") \ 1049 \ 1050 develop(bool, UseDetachedThreads, true, \ 1051 "Use detached threads that are recycled upon termination " \ 1052 "(for SOLARIS only)") \ 1053 \ 1054 product(bool, UseLWPSynchronization, true, \ 1055 "Use LWP-based instead of libthread-based synchronization " \ 1056 "(SPARC only)") \ 1057 \ 1058 product(ccstr, SyncKnobs, NULL, \ 1059 "(Unstable) Various monitor synchronization tunables") \ 1060 \ 1061 product(intx, EmitSync, 0, \ 1062 "(Unsafe,Unstable) " \ 1063 " Controls emission of inline sync fast-path code") \ 1064 \ 1065 product(intx, MonitorBound, 0, "Bound Monitor population") \ 1066 \ 1067 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ 1068 \ 1069 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ 1070 \ 1071 product(intx, SyncVerbose, 0, "(Unstable)" ) \ 1072 \ 1073 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ 1074 \ 1075 product(intx, hashCode, 0, \ 1076 "(Unstable) select hashCode generation algorithm" ) \ 1077 \ 1078 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ 1079 "(Unstable, Linux-specific)" \ 1080 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ 1081 \ 1082 product(bool, FilterSpuriousWakeups, true, \ 1083 "Prevent spurious or premature wakeups from object.wait " \ 1084 "(Solaris only)") \ 1085 \ 1086 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ 1087 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ 1088 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ 1089 \ 1090 develop(bool, UsePthreads, false, \ 1091 "Use pthread-based instead of libthread-based synchronization " \ 1092 "(SPARC only)") \ 1093 \ 1094 product(bool, AdjustConcurrency, false, \ 1095 "call thr_setconcurrency at thread create time to avoid " \ 1096 "LWP starvation on MP systems (For Solaris Only)") \ 1097 \ 1098 product(bool, ReduceSignalUsage, false, \ 1099 "Reduce the use of OS signals in Java and/or the VM") \ 1100 \ 1101 notproduct(bool, ValidateMarkSweep, false, \ 1102 "Do extra validation during MarkSweep collection") \ 1103 \ 1104 notproduct(bool, RecordMarkSweepCompaction, false, \ 1105 "Enable GC-to-GC recording and querying of compaction during " \ 1106 "MarkSweep") \ 1107 \ 1108 develop_pd(bool, ShareVtableStubs, \ 1109 "Share vtable stubs (smaller code but worse branch prediction") \ 1110 \ 1111 develop(bool, LoadLineNumberTables, true, \ 1112 "Tells whether the class file parser loads line number tables") \ 1113 \ 1114 develop(bool, LoadLocalVariableTables, true, \ 1115 "Tells whether the class file parser loads local variable tables")\ 1116 \ 1117 develop(bool, LoadLocalVariableTypeTables, true, \ 1118 "Tells whether the class file parser loads local variable type tables")\ 1119 \ 1120 product(bool, AllowUserSignalHandlers, false, \ 1121 "Do not complain if the application installs signal handlers " \ 1122 "(Solaris & Linux only)") \ 1123 \ 1124 product(bool, UseSignalChaining, true, \ 1125 "Use signal-chaining to invoke signal handlers installed " \ 1126 "by the application (Solaris & Linux only)") \ 1127 \ 1128 product(bool, UseAltSigs, false, \ 1129 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 1130 "internal signals (Solaris only)") \ 1131 \ 1132 product(bool, AllowJNIEnvProxy, false, \ 1133 "Allow JNIEnv proxies for jdbx") \ 1134 \ 1135 product(bool, JNIDetachReleasesMonitors, true, \ 1136 "JNI DetachCurrentThread releases monitors owned by thread") \ 1137 \ 1138 product(bool, RestoreMXCSROnJNICalls, false, \ 1139 "Restore MXCSR when returning from JNI calls") \ 1140 \ 1141 product(bool, CheckJNICalls, false, \ 1142 "Verify all arguments to JNI calls") \ 1143 \ 1144 product(bool, UseFastJNIAccessors, true, \ 1145 "Use optimized versions of Get<Primitive>Field") \ 1146 \ 1147 product(bool, EagerXrunInit, false, \ 1148 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 1149 " but not all -Xrun libraries may support the state of the VM at this time") \ 1150 \ 1151 product(bool, PreserveAllAnnotations, false, \ 1152 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ 1153 \ 1154 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 1155 "Number of OutOfMemoryErrors preallocated with backtrace") \ 1156 \ 1157 product(bool, LazyBootClassLoader, true, \ 1158 "Enable/disable lazy opening of boot class path entries") \ 1159 \ 1160 product(bool, UseXMMForArrayCopy, false, \ 1161 "Use SSE2 MOVQ instruction for Arraycopy") \ 1162 \ 1163 product(intx, FieldsAllocationStyle, 1, \ 1164 "0 - type based with oops first, 1 - with oops last, " \ 1165 "2 - oops in super and sub classes are together") \ 1166 \ 1167 product(bool, CompactFields, true, \ 1168 "Allocate nonstatic fields in gaps between previous fields") \ 1169 \ 1170 notproduct(bool, PrintCompactFieldsSavings, false, \ 1171 "Print how many words were saved with CompactFields") \ 1172 \ 1173 product(bool, UseBiasedLocking, true, \ 1174 "Enable biased locking in JVM") \ 1175 \ 1176 product(intx, BiasedLockingStartupDelay, 4000, \ 1177 "Number of milliseconds to wait before enabling biased locking") \ 1178 \ 1179 diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1180 "Print statistics of biased locking in JVM") \ 1181 \ 1182 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1183 "Threshold of number of revocations per type to try to " \ 1184 "rebias all objects in the heap of that type") \ 1185 \ 1186 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1187 "Threshold of number of revocations per type to permanently " \ 1188 "revoke biases of all objects in the heap of that type") \ 1189 \ 1190 product(intx, BiasedLockingDecayTime, 25000, \ 1191 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1192 "type after previous bulk rebias") \ 1193 \ 1194 /* tracing */ \ 1195 \ 1196 notproduct(bool, TraceRuntimeCalls, false, \ 1197 "Trace run-time calls") \ 1198 \ 1199 develop(bool, TraceJNICalls, false, \ 1200 "Trace JNI calls") \ 1201 \ 1202 notproduct(bool, TraceJVMCalls, false, \ 1203 "Trace JVM calls") \ 1204 \ 1205 product(ccstr, TraceJVMTI, NULL, \ 1206 "Trace flags for JVMTI functions and events") \ 1207 \ 1208 /* This option can change an EMCP method into an obsolete method. */ \ 1209 /* This can affect tests that except specific methods to be EMCP. */ \ 1210 /* This option should be used with caution. */ \ 1211 product(bool, StressLdcRewrite, false, \ 1212 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1213 \ 1214 product(intx, TraceRedefineClasses, 0, \ 1215 "Trace level for JVMTI RedefineClasses") \ 1216 \ 1217 develop(bool, StressMethodComparator, false, \ 1218 "run the MethodComparator on all loaded methods") \ 1219 \ 1220 /* change to false by default sometime after Mustang */ \ 1221 product(bool, VerifyMergedCPBytecodes, true, \ 1222 "Verify bytecodes after RedefineClasses constant pool merging") \ 1223 \ 1224 develop(bool, TraceJNIHandleAllocation, false, \ 1225 "Trace allocation/deallocation of JNI handle blocks") \ 1226 \ 1227 develop(bool, TraceThreadEvents, false, \ 1228 "Trace all thread events") \ 1229 \ 1230 develop(bool, TraceBytecodes, false, \ 1231 "Trace bytecode execution") \ 1232 \ 1233 develop(bool, TraceClassInitialization, false, \ 1234 "Trace class initialization") \ 1235 \ 1236 develop(bool, TraceExceptions, false, \ 1237 "Trace exceptions") \ 1238 \ 1239 develop(bool, TraceICs, false, \ 1240 "Trace inline cache changes") \ 1241 \ 1242 notproduct(bool, TraceInvocationCounterOverflow, false, \ 1243 "Trace method invocation counter overflow") \ 1244 \ 1245 develop(bool, TraceInlineCacheClearing, false, \ 1246 "Trace clearing of inline caches in nmethods") \ 1247 \ 1248 develop(bool, TraceDependencies, false, \ 1249 "Trace dependencies") \ 1250 \ 1251 develop(bool, VerifyDependencies, trueInDebug, \ 1252 "Exercise and verify the compilation dependency mechanism") \ 1253 \ 1254 develop(bool, TraceNewOopMapGeneration, false, \ 1255 "Trace OopMapGeneration") \ 1256 \ 1257 develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1258 "Trace OopMapGeneration: print detailed cell states") \ 1259 \ 1260 develop(bool, TimeOopMap, false, \ 1261 "Time calls to GenerateOopMap::compute_map() in sum") \ 1262 \ 1263 develop(bool, TimeOopMap2, false, \ 1264 "Time calls to GenerateOopMap::compute_map() individually") \ 1265 \ 1266 develop(bool, TraceMonitorMismatch, false, \ 1267 "Trace monitor matching failures during OopMapGeneration") \ 1268 \ 1269 develop(bool, TraceOopMapRewrites, false, \ 1270 "Trace rewritting of method oops during oop map generation") \ 1271 \ 1272 develop(bool, TraceSafepoint, false, \ 1273 "Trace safepoint operations") \ 1274 \ 1275 develop(bool, TraceICBuffer, false, \ 1276 "Trace usage of IC buffer") \ 1277 \ 1278 develop(bool, TraceCompiledIC, false, \ 1279 "Trace changes of compiled IC") \ 1280 \ 1281 notproduct(bool, TraceZapDeadLocals, false, \ 1282 "Trace zapping dead locals") \ 1283 \ 1284 develop(bool, TraceStartupTime, false, \ 1285 "Trace setup time") \ 1286 \ 1287 develop(bool, TraceProtectionDomainVerification, false, \ 1288 "Trace protection domain verifcation") \ 1289 \ 1290 develop(bool, TraceClearedExceptions, false, \ 1291 "Prints when an exception is forcibly cleared") \ 1292 \ 1293 product(bool, TraceClassResolution, false, \ 1294 "Trace all constant pool resolutions (for debugging)") \ 1295 \ 1296 product(bool, TraceBiasedLocking, false, \ 1297 "Trace biased locking in JVM") \ 1298 \ 1299 product(bool, TraceMonitorInflation, false, \ 1300 "Trace monitor inflation in JVM") \ 1301 \ 1302 /* gc */ \ 1303 \ 1304 product(bool, UseSerialGC, false, \ 1305 "Use the serial garbage collector") \ 1306 \ 1307 product(bool, UseG1GC, false, \ 1308 "Use the Garbage-First garbage collector") \ 1309 \ 1310 product(bool, UseParallelGC, false, \ 1311 "Use the Parallel Scavenge garbage collector") \ 1312 \ 1313 product(bool, UseParallelOldGC, false, \ 1314 "Use the Parallel Old garbage collector") \ 1315 \ 1316 product(uintx, HeapMaximumCompactionInterval, 20, \ 1317 "How often should we maximally compact the heap (not allowing " \ 1318 "any dead space)") \ 1319 \ 1320 product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1321 "The collection count for the first maximum compaction") \ 1322 \ 1323 product(bool, UseMaximumCompactionOnSystemGC, true, \ 1324 "In the Parallel Old garbage collector maximum compaction for " \ 1325 "a system GC") \ 1326 \ 1327 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1328 "The mean used by the par compact dead wood" \ 1329 "limiter (a number between 0-100).") \ 1330 \ 1331 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1332 "The standard deviation used by the par compact dead wood" \ 1333 "limiter (a number between 0-100).") \ 1334 \ 1335 product(uintx, ParallelGCThreads, 0, \ 1336 "Number of parallel threads parallel gc will use") \ 1337 \ 1338 product(bool, UseDynamicNumberOfGCThreads, false, \ 1339 "Dynamically choose the number of parallel threads " \ 1340 "parallel gc will use") \ 1341 \ 1342 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 1343 "Force dynamic selection of the number of" \ 1344 "parallel threads parallel gc will use to aid debugging") \ 1345 \ 1346 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 1347 "Size of heap (bytes) per GC thread used in calculating the " \ 1348 "number of GC threads") \ 1349 \ 1350 product(bool, TraceDynamicGCThreads, false, \ 1351 "Trace the dynamic GC thread usage") \ 1352 \ 1353 develop(bool, ParallelOldGCSplitALot, false, \ 1354 "Provoke splitting (copying data from a young gen space to" \ 1355 "multiple destination spaces)") \ 1356 \ 1357 develop(uintx, ParallelOldGCSplitInterval, 3, \ 1358 "How often to provoke splitting a young gen space") \ 1359 \ 1360 product(uintx, ConcGCThreads, 0, \ 1361 "Number of threads concurrent gc will use") \ 1362 \ 1363 product(uintx, YoungPLABSize, 4096, \ 1364 "Size of young gen promotion labs (in HeapWords)") \ 1365 \ 1366 product(uintx, OldPLABSize, 1024, \ 1367 "Size of old gen promotion labs (in HeapWords)") \ 1368 \ 1369 product(uintx, GCTaskTimeStampEntries, 200, \ 1370 "Number of time stamp entries per gc worker thread") \ 1371 \ 1372 product(bool, AlwaysTenure, false, \ 1373 "Always tenure objects in eden. (ParallelGC only)") \ 1374 \ 1375 product(bool, NeverTenure, false, \ 1376 "Never tenure objects in eden, May tenure on overflow " \ 1377 "(ParallelGC only)") \ 1378 \ 1379 product(bool, ScavengeBeforeFullGC, true, \ 1380 "Scavenge youngest generation before each full GC, " \ 1381 "used with UseParallelGC") \ 1382 \ 1383 develop(bool, ScavengeWithObjectsInToSpace, false, \ 1384 "Allow scavenges to occur when to_space contains objects.") \ 1385 \ 1386 product(bool, UseConcMarkSweepGC, false, \ 1387 "Use Concurrent Mark-Sweep GC in the old generation") \ 1388 \ 1389 product(bool, ExplicitGCInvokesConcurrent, false, \ 1390 "A System.gc() request invokes a concurrent collection;" \ 1391 " (effective only when UseConcMarkSweepGC)") \ 1392 \ 1393 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1394 "A System.gc() request invokes a concurrent collection and " \ 1395 "also unloads classes during such a concurrent gc cycle " \ 1396 "(effective only when UseConcMarkSweepGC)") \ 1397 \ 1398 product(bool, GCLockerInvokesConcurrent, false, \ 1399 "The exit of a JNI CS necessitating a scavenge also" \ 1400 " kicks off a bkgrd concurrent collection") \ 1401 \ 1402 product(uintx, GCLockerEdenExpansionPercent, 5, \ 1403 "How much the GC can expand the eden by while the GC locker " \ 1404 "is active (as a percentage)") \ 1405 \ 1406 develop(bool, UseCMSAdaptiveFreeLists, true, \ 1407 "Use Adaptive Free Lists in the CMS generation") \ 1408 \ 1409 develop(bool, UseAsyncConcMarkSweepGC, true, \ 1410 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1411 \ 1412 develop(bool, RotateCMSCollectionTypes, false, \ 1413 "Rotate the CMS collections among concurrent and STW") \ 1414 \ 1415 product(bool, UseCMSBestFit, true, \ 1416 "Use CMS best fit allocation strategy") \ 1417 \ 1418 product(bool, UseCMSCollectionPassing, true, \ 1419 "Use passing of collection from background to foreground") \ 1420 \ 1421 product(bool, UseParNewGC, false, \ 1422 "Use parallel threads in the new generation.") \ 1423 \ 1424 product(bool, ParallelGCVerbose, false, \ 1425 "Verbose output for parallel GC.") \ 1426 \ 1427 product(intx, ParallelGCBufferWastePct, 10, \ 1428 "wasted fraction of parallel allocation buffer.") \ 1429 \ 1430 diagnostic(bool, ParallelGCRetainPLAB, false, \ 1431 "Retain parallel allocation buffers across scavenges; " \ 1432 " -- disabled because this currently conflicts with " \ 1433 " parallel card scanning under certain conditions ") \ 1434 \ 1435 product(intx, TargetPLABWastePct, 10, \ 1436 "target wasted space in last buffer as pct of overall allocation")\ 1437 \ 1438 product(uintx, PLABWeight, 75, \ 1439 "Percentage (0-100) used to weight the current sample when" \ 1440 "computing exponentially decaying average for ResizePLAB.") \ 1441 \ 1442 product(bool, ResizePLAB, true, \ 1443 "Dynamically resize (survivor space) promotion labs") \ 1444 \ 1445 product(bool, PrintPLAB, false, \ 1446 "Print (survivor space) promotion labs sizing decisions") \ 1447 \ 1448 product(intx, ParGCArrayScanChunk, 50, \ 1449 "Scan a subset and push remainder, if array is bigger than this") \ 1450 \ 1451 product(bool, ParGCUseLocalOverflow, false, \ 1452 "Instead of a global overflow list, use local overflow stacks") \ 1453 \ 1454 product(bool, ParGCTrimOverflow, true, \ 1455 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ 1456 \ 1457 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 1458 "Whether we should simulate work queue overflow in ParNew") \ 1459 \ 1460 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1461 "An `interval' counter that determines how frequently " \ 1462 "we simulate overflow; a smaller number increases frequency") \ 1463 \ 1464 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1465 "The desired number of objects to claim from the overflow list") \ 1466 \ 1467 diagnostic(uintx, ParGCStridesPerThread, 2, \ 1468 "The number of strides per worker thread that we divide up the " \ 1469 "card table scanning work into") \ 1470 \ 1471 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 1472 "The number of cards in each chunk of the parallel chunks used " \ 1473 "during card table scanning") \ 1474 \ 1475 product(uintx, CMSParPromoteBlocksToClaim, 16, \ 1476 "Number of blocks to attempt to claim when refilling CMS LAB for "\ 1477 "parallel GC.") \ 1478 \ 1479 product(uintx, OldPLABWeight, 50, \ 1480 "Percentage (0-100) used to weight the current sample when" \ 1481 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ 1482 \ 1483 product(bool, ResizeOldPLAB, true, \ 1484 "Dynamically resize (old gen) promotion labs") \ 1485 \ 1486 product(bool, PrintOldPLAB, false, \ 1487 "Print (old gen) promotion labs sizing decisions") \ 1488 \ 1489 product(uintx, CMSOldPLABMin, 16, \ 1490 "Min size of CMS gen promotion lab caches per worker per blksize")\ 1491 \ 1492 product(uintx, CMSOldPLABMax, 1024, \ 1493 "Max size of CMS gen promotion lab caches per worker per blksize")\ 1494 \ 1495 product(uintx, CMSOldPLABNumRefills, 4, \ 1496 "Nominal number of refills of CMS gen promotion lab cache" \ 1497 " per worker per block size") \ 1498 \ 1499 product(bool, CMSOldPLABResizeQuicker, false, \ 1500 "Whether to react on-the-fly during a scavenge to a sudden" \ 1501 " change in block demand rate") \ 1502 \ 1503 product(uintx, CMSOldPLABToleranceFactor, 4, \ 1504 "The tolerance of the phase-change detector for on-the-fly" \ 1505 " PLAB resizing during a scavenge") \ 1506 \ 1507 product(uintx, CMSOldPLABReactivityFactor, 2, \ 1508 "The gain in the feedback loop for on-the-fly PLAB resizing" \ 1509 " during a scavenge") \ 1510 \ 1511 product(bool, AlwaysPreTouch, false, \ 1512 "It forces all freshly committed pages to be pre-touched.") \ 1513 \ 1514 product_pd(intx, CMSYoungGenPerWorker, \ 1515 "The maximum size of young gen chosen by default per GC worker " \ 1516 "thread available") \ 1517 \ 1518 product(bool, CMSIncrementalMode, false, \ 1519 "Whether CMS GC should operate in \"incremental\" mode") \ 1520 \ 1521 product(uintx, CMSIncrementalDutyCycle, 10, \ 1522 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ 1523 "CMSIncrementalPacing is enabled, then this is just the initial" \ 1524 "value") \ 1525 \ 1526 product(bool, CMSIncrementalPacing, true, \ 1527 "Whether the CMS incremental mode duty cycle should be " \ 1528 "automatically adjusted") \ 1529 \ 1530 product(uintx, CMSIncrementalDutyCycleMin, 0, \ 1531 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ 1532 "enabled (a percentage, 0-100)") \ 1533 \ 1534 product(uintx, CMSIncrementalSafetyFactor, 10, \ 1535 "Percentage (0-100) used to add conservatism when computing the " \ 1536 "duty cycle") \ 1537 \ 1538 product(uintx, CMSIncrementalOffset, 0, \ 1539 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ 1540 " is shifted to the right within the period between young GCs") \ 1541 \ 1542 product(uintx, CMSExpAvgFactor, 50, \ 1543 "Percentage (0-100) used to weight the current sample when" \ 1544 "computing exponential averages for CMS statistics.") \ 1545 \ 1546 product(uintx, CMS_FLSWeight, 75, \ 1547 "Percentage (0-100) used to weight the current sample when" \ 1548 "computing exponentially decating averages for CMS FLS statistics.") \ 1549 \ 1550 product(uintx, CMS_FLSPadding, 1, \ 1551 "The multiple of deviation from mean to use for buffering" \ 1552 "against volatility in free list demand.") \ 1553 \ 1554 product(uintx, FLSCoalescePolicy, 2, \ 1555 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ 1556 \ 1557 product(bool, FLSAlwaysCoalesceLarge, false, \ 1558 "CMS: Larger free blocks are always available for coalescing") \ 1559 \ 1560 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 1561 "CMS: the smaller the percentage the greater the coalition force")\ 1562 \ 1563 product(double, CMSSmallCoalSurplusPercent, 1.05, \ 1564 "CMS: the factor by which to inflate estimated demand of small" \ 1565 " block sizes to prevent coalescing with an adjoining block") \ 1566 \ 1567 product(double, CMSLargeCoalSurplusPercent, 0.95, \ 1568 "CMS: the factor by which to inflate estimated demand of large" \ 1569 " block sizes to prevent coalescing with an adjoining block") \ 1570 \ 1571 product(double, CMSSmallSplitSurplusPercent, 1.10, \ 1572 "CMS: the factor by which to inflate estimated demand of small" \ 1573 " block sizes to prevent splitting to supply demand for smaller" \ 1574 " blocks") \ 1575 \ 1576 product(double, CMSLargeSplitSurplusPercent, 1.00, \ 1577 "CMS: the factor by which to inflate estimated demand of large" \ 1578 " block sizes to prevent splitting to supply demand for smaller" \ 1579 " blocks") \ 1580 \ 1581 product(bool, CMSExtrapolateSweep, false, \ 1582 "CMS: cushion for block demand during sweep") \ 1583 \ 1584 product(uintx, CMS_SweepWeight, 75, \ 1585 "Percentage (0-100) used to weight the current sample when " \ 1586 "computing exponentially decaying average for inter-sweep " \ 1587 "duration") \ 1588 \ 1589 product(uintx, CMS_SweepPadding, 1, \ 1590 "The multiple of deviation from mean to use for buffering " \ 1591 "against volatility in inter-sweep duration.") \ 1592 \ 1593 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1594 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1595 "duration exceeds this threhold in milliseconds") \ 1596 \ 1597 develop(bool, CMSTraceIncrementalMode, false, \ 1598 "Trace CMS incremental mode") \ 1599 \ 1600 develop(bool, CMSTraceIncrementalPacing, false, \ 1601 "Trace CMS incremental mode pacing computation") \ 1602 \ 1603 develop(bool, CMSTraceThreadState, false, \ 1604 "Trace the CMS thread state (enable the trace_state() method)") \ 1605 \ 1606 product(bool, CMSClassUnloadingEnabled, false, \ 1607 "Whether class unloading enabled when using CMS GC") \ 1608 \ 1609 product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1610 "When CMS class unloading is enabled, the maximum CMS cycle count"\ 1611 " for which classes may not be unloaded") \ 1612 \ 1613 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ 1614 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ 1615 \ 1616 product(bool, UseCMSCompactAtFullCollection, true, \ 1617 "Use mark sweep compact at full collections") \ 1618 \ 1619 product(uintx, CMSFullGCsBeforeCompaction, 0, \ 1620 "Number of CMS full collection done before compaction if > 0") \ 1621 \ 1622 develop(intx, CMSDictionaryChoice, 0, \ 1623 "Use BinaryTreeDictionary as default in the CMS generation") \ 1624 \ 1625 product(uintx, CMSIndexedFreeListReplenish, 4, \ 1626 "Replenish an indexed free list with this number of chunks") \ 1627 \ 1628 product(bool, CMSReplenishIntermediate, true, \ 1629 "Replenish all intermediate free-list caches") \ 1630 \ 1631 product(bool, CMSSplitIndexedFreeListBlocks, true, \ 1632 "When satisfying batched demand, split blocks from the " \ 1633 "IndexedFreeList whose size is a multiple of requested size") \ 1634 \ 1635 product(bool, CMSLoopWarn, false, \ 1636 "Warn in case of excessive CMS looping") \ 1637 \ 1638 develop(bool, CMSOverflowEarlyRestoration, false, \ 1639 "Whether preserved marks should be restored early") \ 1640 \ 1641 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1642 "Size of marking stack") \ 1643 \ 1644 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1645 "Max size of marking stack") \ 1646 \ 1647 notproduct(bool, CMSMarkStackOverflowALot, false, \ 1648 "Whether we should simulate frequent marking stack / work queue" \ 1649 " overflow") \ 1650 \ 1651 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1652 "An `interval' counter that determines how frequently" \ 1653 " we simulate overflow; a smaller number increases frequency") \ 1654 \ 1655 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1656 "(Temporary, subject to experimentation)" \ 1657 "Maximum number of abortable preclean iterations, if > 0") \ 1658 \ 1659 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1660 "(Temporary, subject to experimentation)" \ 1661 "Maximum time in abortable preclean in ms") \ 1662 \ 1663 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1664 "(Temporary, subject to experimentation)" \ 1665 "Nominal minimum work per abortable preclean iteration") \ 1666 \ 1667 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1668 "(Temporary, subject to experimentation)" \ 1669 " Time that we sleep between iterations when not given" \ 1670 " enough work per iteration") \ 1671 \ 1672 product(uintx, CMSRescanMultiple, 32, \ 1673 "Size (in cards) of CMS parallel rescan task") \ 1674 \ 1675 product(uintx, CMSConcMarkMultiple, 32, \ 1676 "Size (in cards) of CMS concurrent MT marking task") \ 1677 \ 1678 product(bool, CMSAbortSemantics, false, \ 1679 "Whether abort-on-overflow semantics is implemented") \ 1680 \ 1681 product(bool, CMSParallelRemarkEnabled, true, \ 1682 "Whether parallel remark enabled (only if ParNewGC)") \ 1683 \ 1684 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1685 "Whether parallel remark of survivor space" \ 1686 " enabled (effective only if CMSParallelRemarkEnabled)") \ 1687 \ 1688 product(bool, CMSPLABRecordAlways, true, \ 1689 "Whether to always record survivor space PLAB bdries" \ 1690 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ 1691 \ 1692 product(bool, CMSConcurrentMTEnabled, true, \ 1693 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ 1694 \ 1695 product(bool, CMSPrecleaningEnabled, true, \ 1696 "Whether concurrent precleaning enabled") \ 1697 \ 1698 product(uintx, CMSPrecleanIter, 3, \ 1699 "Maximum number of precleaning iteration passes") \ 1700 \ 1701 product(uintx, CMSPrecleanNumerator, 2, \ 1702 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1703 " ratio") \ 1704 \ 1705 product(uintx, CMSPrecleanDenominator, 3, \ 1706 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1707 " ratio") \ 1708 \ 1709 product(bool, CMSPrecleanRefLists1, true, \ 1710 "Preclean ref lists during (initial) preclean phase") \ 1711 \ 1712 product(bool, CMSPrecleanRefLists2, false, \ 1713 "Preclean ref lists during abortable preclean phase") \ 1714 \ 1715 product(bool, CMSPrecleanSurvivors1, false, \ 1716 "Preclean survivors during (initial) preclean phase") \ 1717 \ 1718 product(bool, CMSPrecleanSurvivors2, true, \ 1719 "Preclean survivors during abortable preclean phase") \ 1720 \ 1721 product(uintx, CMSPrecleanThreshold, 1000, \ 1722 "Don't re-iterate if #dirty cards less than this") \ 1723 \ 1724 product(bool, CMSCleanOnEnter, true, \ 1725 "Clean-on-enter optimization for reducing number of dirty cards") \ 1726 \ 1727 product(uintx, CMSRemarkVerifyVariant, 1, \ 1728 "Choose variant (1,2) of verification following remark") \ 1729 \ 1730 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1731 "If Eden used is below this value, don't try to schedule remark") \ 1732 \ 1733 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1734 "The Eden occupancy % at which to try and schedule remark pause") \ 1735 \ 1736 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1737 "Start sampling Eden top at least before yg occupancy reaches" \ 1738 " 1/<ratio> of the size at which we plan to schedule remark") \ 1739 \ 1740 product(uintx, CMSSamplingGrain, 16*K, \ 1741 "The minimum distance between eden samples for CMS (see above)") \ 1742 \ 1743 product(bool, CMSScavengeBeforeRemark, false, \ 1744 "Attempt scavenge before the CMS remark step") \ 1745 \ 1746 develop(bool, CMSTraceSweeper, false, \ 1747 "Trace some actions of the CMS sweeper") \ 1748 \ 1749 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1750 "Don't drain below this size per parallel worker/thief") \ 1751 \ 1752 manageable(intx, CMSWaitDuration, 2000, \ 1753 "Time in milliseconds that CMS thread waits for young GC") \ 1754 \ 1755 product(bool, CMSYield, true, \ 1756 "Yield between steps of concurrent mark & sweep") \ 1757 \ 1758 product(uintx, CMSBitMapYieldQuantum, 10*M, \ 1759 "Bitmap operations should process at most this many bits" \ 1760 "between yields") \ 1761 \ 1762 product(bool, CMSDumpAtPromotionFailure, false, \ 1763 "Dump useful information about the state of the CMS old " \ 1764 " generation upon a promotion failure.") \ 1765 \ 1766 product(bool, CMSPrintChunksInDump, false, \ 1767 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1768 " more detailed information about the free chunks.") \ 1769 \ 1770 product(bool, CMSPrintObjectsInDump, false, \ 1771 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1772 " more detailed information about the allocated objects.") \ 1773 \ 1774 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1775 "Verify that all refs across the FLS boundary " \ 1776 " are to valid objects") \ 1777 \ 1778 diagnostic(bool, FLSVerifyLists, false, \ 1779 "Do lots of (expensive) FreeListSpace verification") \ 1780 \ 1781 diagnostic(bool, FLSVerifyIndexTable, false, \ 1782 "Do lots of (expensive) FLS index table verification") \ 1783 \ 1784 develop(bool, FLSVerifyDictionary, false, \ 1785 "Do lots of (expensive) FLS dictionary verification") \ 1786 \ 1787 develop(bool, VerifyBlockOffsetArray, false, \ 1788 "Do (expensive!) block offset array verification") \ 1789 \ 1790 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 1791 "Maintain _unallocated_block in BlockOffsetArray" \ 1792 " (currently applicable only to CMS collector)") \ 1793 \ 1794 develop(bool, TraceCMSState, false, \ 1795 "Trace the state of the CMS collection") \ 1796 \ 1797 product(intx, RefDiscoveryPolicy, 0, \ 1798 "Whether reference-based(0) or referent-based(1)") \ 1799 \ 1800 product(bool, ParallelRefProcEnabled, false, \ 1801 "Enable parallel reference processing whenever possible") \ 1802 \ 1803 product(bool, ParallelRefProcBalancingEnabled, true, \ 1804 "Enable balancing of reference processing queues") \ 1805 \ 1806 product(intx, CMSTriggerRatio, 80, \ 1807 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1808 "allocated before a CMS collection cycle commences") \ 1809 \ 1810 product(uintx, CMSBootstrapOccupancy, 50, \ 1811 "Percentage CMS generation occupancy at which to " \ 1812 "initiate CMS collection for bootstrapping collection stats") \ 1813 \ 1814 product(intx, CMSInitiatingOccupancyFraction, -1, \ 1815 "Percentage CMS generation occupancy to start a CMS collection " \ 1816 "cycle. A negative value means that CMSTriggerRatio is used") \ 1817 \ 1818 product(uintx, InitiatingHeapOccupancyPercent, 45, \ 1819 "Percentage of the (entire) heap occupancy to start a " \ 1820 "concurrent GC cycle. It us used by GCs that trigger a " \ 1821 "concurrent GC cycle based on the occupancy of the entire heap, " \ 1822 "not just one of the generations (e.g., G1). A value of 0 " \ 1823 "denotes 'do constant GC cycles'.") \ 1824 \ 1825 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1826 "Only use occupancy as a crierion for starting a CMS collection") \ 1827 \ 1828 product(intx, CMSIsTooFullPercentage, 98, \ 1829 "An absolute ceiling above which CMS will always consider the " \ 1830 "perm gen ripe for collection") \ 1831 \ 1832 develop(bool, CMSTestInFreeList, false, \ 1833 "Check if the coalesced range is already in the " \ 1834 "free lists as claimed") \ 1835 \ 1836 notproduct(bool, CMSVerifyReturnedBytes, false, \ 1837 "Check that all the garbage collected was returned to the " \ 1838 "free lists.") \ 1839 \ 1840 notproduct(bool, ScavengeALot, false, \ 1841 "Force scavenge at every Nth exit from the runtime system " \ 1842 "(N=ScavengeALotInterval)") \ 1843 \ 1844 develop(bool, FullGCALot, false, \ 1845 "Force full gc at every Nth exit from the runtime system " \ 1846 "(N=FullGCALotInterval)") \ 1847 \ 1848 notproduct(bool, GCALotAtAllSafepoints, false, \ 1849 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1850 \ 1851 product(bool, PrintPromotionFailure, false, \ 1852 "Print additional diagnostic information following " \ 1853 " promotion failure") \ 1854 \ 1855 notproduct(bool, PromotionFailureALot, false, \ 1856 "Use promotion failure handling on every youngest generation " \ 1857 "collection") \ 1858 \ 1859 develop(uintx, PromotionFailureALotCount, 1000, \ 1860 "Number of promotion failures occurring at ParGCAllocBuffer" \ 1861 "refill attempts (ParNew) or promotion attempts " \ 1862 "(other young collectors) ") \ 1863 \ 1864 develop(uintx, PromotionFailureALotInterval, 5, \ 1865 "Total collections between promotion failures alot") \ 1866 \ 1867 experimental(intx, WorkStealingSleepMillis, 1, \ 1868 "Sleep time when sleep is used for yields") \ 1869 \ 1870 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 1871 "Number of yields before a sleep is done during workstealing") \ 1872 \ 1873 experimental(uintx, WorkStealingHardSpins, 4096, \ 1874 "Number of iterations in a spin loop between checks on " \ 1875 "time out of hard spin") \ 1876 \ 1877 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 1878 "Ratio of hard spins to calls to yield") \ 1879 \ 1880 develop(uintx, ObjArrayMarkingStride, 512, \ 1881 "Number of ObjArray elements to push onto the marking stack" \ 1882 "before pushing a continuation entry") \ 1883 \ 1884 develop(bool, MetadataAllocationFailALot, false, \ 1885 "Fail metadata allocations at intervals controlled by " \ 1886 "MetadataAllocationFailALotInterval") \ 1887 \ 1888 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 1889 "metadata allocation failure alot interval") \ 1890 \ 1891 develop(bool, MetaDataDeallocateALot, false, \ 1892 "Deallocation bunches of metadata at intervals controlled by " \ 1893 "MetaDataAllocateALotInterval") \ 1894 \ 1895 develop(uintx, MetaDataDeallocateALotInterval, 100, \ 1896 "Metadata deallocation alot interval") \ 1897 \ 1898 develop(bool, TraceMetadataChunkAllocation, false, \ 1899 "Trace humongous metadata allocations") \ 1900 \ 1901 product(bool, TraceMetadataHumongousAllocation, false, \ 1902 "Trace humongous metadata allocations") \ 1903 \ 1904 develop(bool, TraceMetavirtualspaceAllocation, false, \ 1905 "Trace humongous metadata allocations") \ 1906 \ 1907 notproduct(bool, ExecuteInternalVMTests, false, \ 1908 "Enable execution of internal VM tests.") \ 1909 \ 1910 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 1911 \ 1912 product_pd(bool, ResizeTLAB, \ 1913 "Dynamically resize tlab size for threads") \ 1914 \ 1915 product(bool, ZeroTLAB, false, \ 1916 "Zero out the newly created TLAB") \ 1917 \ 1918 product(bool, FastTLABRefill, true, \ 1919 "Use fast TLAB refill code") \ 1920 \ 1921 product(bool, PrintTLAB, false, \ 1922 "Print various TLAB related information") \ 1923 \ 1924 product(bool, TLABStats, true, \ 1925 "Print various TLAB related information") \ 1926 \ 1927 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ 1928 "Enable LowMemoryProtection")) \ 1929 \ 1930 product_pd(bool, NeverActAsServerClassMachine, \ 1931 "Never act like a server-class machine") \ 1932 \ 1933 product(bool, AlwaysActAsServerClassMachine, false, \ 1934 "Always act like a server-class machine") \ 1935 \ 1936 product_pd(uint64_t, MaxRAM, \ 1937 "Real memory size (in bytes) used to set maximum heap size") \ 1938 \ 1939 product(uintx, ErgoHeapSizeLimit, 0, \ 1940 "Maximum ergonomically set heap size (in bytes); zero means use " \ 1941 "MaxRAM / MaxRAMFraction") \ 1942 \ 1943 product(uintx, MaxRAMFraction, 4, \ 1944 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1945 "size") \ 1946 \ 1947 product(uintx, DefaultMaxRAMFraction, 4, \ 1948 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1949 "size; deprecated: to be renamed to MaxRAMFraction") \ 1950 \ 1951 product(uintx, MinRAMFraction, 2, \ 1952 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ 1953 "size on systems with small physical memory size") \ 1954 \ 1955 product(uintx, InitialRAMFraction, 64, \ 1956 "Fraction (1/n) of real memory used for initial heap size") \ 1957 \ 1958 product(bool, UseAutoGCSelectPolicy, false, \ 1959 "Use automatic collection selection policy") \ 1960 \ 1961 product(uintx, AutoGCSelectPauseMillis, 5000, \ 1962 "Automatic GC selection pause threshhold in ms") \ 1963 \ 1964 product(bool, UseAdaptiveSizePolicy, true, \ 1965 "Use adaptive generation sizing policies") \ 1966 \ 1967 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 1968 "Use adaptive survivor sizing policies") \ 1969 \ 1970 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 1971 "Use adaptive young-old sizing policies at minor collections") \ 1972 \ 1973 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 1974 "Use adaptive young-old sizing policies at major collections") \ 1975 \ 1976 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 1977 "Use statistics from System.GC for adaptive size policy") \ 1978 \ 1979 product(bool, UseAdaptiveGCBoundary, false, \ 1980 "Allow young-old boundary to move") \ 1981 \ 1982 develop(bool, TraceAdaptiveGCBoundary, false, \ 1983 "Trace young-old boundary moves") \ 1984 \ 1985 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 1986 "Resize the virtual spaces of the young or old generations") \ 1987 \ 1988 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 1989 "Policy for changeing generation size for throughput goals") \ 1990 \ 1991 product(uintx, AdaptiveSizePausePolicy, 0, \ 1992 "Policy for changing generation size for pause goals") \ 1993 \ 1994 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 1995 "Adjust tenured generation to achive a minor pause goal") \ 1996 \ 1997 develop(bool, PSAdjustYoungGenForMajorPause, false, \ 1998 "Adjust young generation to achive a major pause goal") \ 1999 \ 2000 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 2001 "Number of steps where heuristics is used before data is used") \ 2002 \ 2003 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2004 "Number of collections before the adaptive sizing is started") \ 2005 \ 2006 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2007 "Collecton interval for printing information; zero => never") \ 2008 \ 2009 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2010 "Use adaptive minimum footprint as a goal") \ 2011 \ 2012 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2013 "Weight given to exponential resizing, between 0 and 100") \ 2014 \ 2015 product(uintx, AdaptiveTimeWeight, 25, \ 2016 "Weight given to time in adaptive policy, between 0 and 100") \ 2017 \ 2018 product(uintx, PausePadding, 1, \ 2019 "How much buffer to keep for pause time") \ 2020 \ 2021 product(uintx, PromotedPadding, 3, \ 2022 "How much buffer to keep for promotion failure") \ 2023 \ 2024 product(uintx, SurvivorPadding, 3, \ 2025 "How much buffer to keep for survivor overflow") \ 2026 \ 2027 product(uintx, ThresholdTolerance, 10, \ 2028 "Allowed collection cost difference between generations") \ 2029 \ 2030 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 2031 "If collection costs are within margin, reduce both by full " \ 2032 "delta") \ 2033 \ 2034 product(uintx, YoungGenerationSizeIncrement, 20, \ 2035 "Adaptive size percentage change in young generation") \ 2036 \ 2037 product(uintx, YoungGenerationSizeSupplement, 80, \ 2038 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 2039 \ 2040 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 2041 "Decay factor to YoungedGenerationSizeSupplement") \ 2042 \ 2043 product(uintx, TenuredGenerationSizeIncrement, 20, \ 2044 "Adaptive size percentage change in tenured generation") \ 2045 \ 2046 product(uintx, TenuredGenerationSizeSupplement, 80, \ 2047 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 2048 \ 2049 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 2050 "Decay factor to TenuredGenerationSizeIncrement") \ 2051 \ 2052 product(uintx, MaxGCPauseMillis, max_uintx, \ 2053 "Adaptive size policy maximum GC pause time goal in msec, " \ 2054 "or (G1 Only) the max. GC time per MMU time slice") \ 2055 \ 2056 product(uintx, GCPauseIntervalMillis, 0, \ 2057 "Time slice for MMU specification") \ 2058 \ 2059 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 2060 "Adaptive size policy maximum GC minor pause time goal in msec") \ 2061 \ 2062 product(uintx, GCTimeRatio, 99, \ 2063 "Adaptive size policy application time to GC time ratio") \ 2064 \ 2065 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 2066 "Adaptive size scale down factor for shrinking") \ 2067 \ 2068 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 2069 "Adaptive size decays the major cost for long major intervals") \ 2070 \ 2071 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 2072 "Time scale over which major costs decay") \ 2073 \ 2074 product(uintx, MinSurvivorRatio, 3, \ 2075 "Minimum ratio of young generation/survivor space size") \ 2076 \ 2077 product(uintx, InitialSurvivorRatio, 8, \ 2078 "Initial ratio of eden/survivor space size") \ 2079 \ 2080 product(uintx, BaseFootPrintEstimate, 256*M, \ 2081 "Estimate of footprint other than Java Heap") \ 2082 \ 2083 product(bool, UseGCOverheadLimit, true, \ 2084 "Use policy to limit of proportion of time spent in GC " \ 2085 "before an OutOfMemory error is thrown") \ 2086 \ 2087 product(uintx, GCTimeLimit, 98, \ 2088 "Limit of proportion of time spent in GC before an OutOfMemory" \ 2089 "error is thrown (used with GCHeapFreeLimit)") \ 2090 \ 2091 product(uintx, GCHeapFreeLimit, 2, \ 2092 "Minimum percentage of free space after a full GC before an " \ 2093 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 2094 \ 2095 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 2096 "Number of consecutive collections before gc time limit fires") \ 2097 \ 2098 product(bool, PrintAdaptiveSizePolicy, false, \ 2099 "Print information about AdaptiveSizePolicy") \ 2100 \ 2101 product(intx, PrefetchCopyIntervalInBytes, -1, \ 2102 "How far ahead to prefetch destination area (<= 0 means off)") \ 2103 \ 2104 product(intx, PrefetchScanIntervalInBytes, -1, \ 2105 "How far ahead to prefetch scan area (<= 0 means off)") \ 2106 \ 2107 product(intx, PrefetchFieldsAhead, -1, \ 2108 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 2109 \ 2110 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 2111 "Verify system before exiting") \ 2112 \ 2113 diagnostic(bool, VerifyBeforeGC, false, \ 2114 "Verify memory system before GC") \ 2115 \ 2116 diagnostic(bool, VerifyAfterGC, false, \ 2117 "Verify memory system after GC") \ 2118 \ 2119 diagnostic(bool, VerifyDuringGC, false, \ 2120 "Verify memory system during GC (between phases)") \ 2121 \ 2122 diagnostic(bool, GCParallelVerificationEnabled, true, \ 2123 "Enable parallel memory system verification") \ 2124 \ 2125 diagnostic(bool, DeferInitialCardMark, false, \ 2126 "When +ReduceInitialCardMarks, explicitly defer any that " \ 2127 "may arise from new_pre_store_barrier") \ 2128 \ 2129 diagnostic(bool, VerifyRememberedSets, false, \ 2130 "Verify GC remembered sets") \ 2131 \ 2132 diagnostic(bool, VerifyObjectStartArray, true, \ 2133 "Verify GC object start array if verify before/after") \ 2134 \ 2135 product(bool, DisableExplicitGC, false, \ 2136 "Tells whether calling System.gc() does a full GC") \ 2137 \ 2138 notproduct(bool, CheckMemoryInitialization, false, \ 2139 "Checks memory initialization") \ 2140 \ 2141 product(bool, CollectGen0First, false, \ 2142 "Collect youngest generation before each full GC") \ 2143 \ 2144 diagnostic(bool, BindCMSThreadToCPU, false, \ 2145 "Bind CMS Thread to CPU if possible") \ 2146 \ 2147 diagnostic(uintx, CPUForCMSThread, 0, \ 2148 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 2149 \ 2150 product(bool, BindGCTaskThreadsToCPUs, false, \ 2151 "Bind GCTaskThreads to CPUs if possible") \ 2152 \ 2153 product(bool, UseGCTaskAffinity, false, \ 2154 "Use worker affinity when asking for GCTasks") \ 2155 \ 2156 product(uintx, ProcessDistributionStride, 4, \ 2157 "Stride through processors when distributing processes") \ 2158 \ 2159 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 2160 "number of times the coordinator GC thread will sleep while " \ 2161 "yielding before giving up and resuming GC") \ 2162 \ 2163 product(uintx, CMSYieldSleepCount, 0, \ 2164 "number of times a GC thread (minus the coordinator) " \ 2165 "will sleep while yielding before giving up and resuming GC") \ 2166 \ 2167 /* gc tracing */ \ 2168 manageable(bool, PrintGC, false, \ 2169 "Print message at garbage collect") \ 2170 \ 2171 manageable(bool, PrintGCDetails, false, \ 2172 "Print more details at garbage collect") \ 2173 \ 2174 manageable(bool, PrintGCDateStamps, false, \ 2175 "Print date stamps at garbage collect") \ 2176 \ 2177 manageable(bool, PrintGCTimeStamps, false, \ 2178 "Print timestamps at garbage collect") \ 2179 \ 2180 product(bool, PrintGCTaskTimeStamps, false, \ 2181 "Print timestamps for individual gc worker thread tasks") \ 2182 \ 2183 develop(intx, ConcGCYieldTimeout, 0, \ 2184 "If non-zero, assert that GC threads yield within this # of ms.") \ 2185 \ 2186 notproduct(bool, TraceMarkSweep, false, \ 2187 "Trace mark sweep") \ 2188 \ 2189 product(bool, PrintReferenceGC, false, \ 2190 "Print times spent handling reference objects during GC " \ 2191 " (enabled only when PrintGCDetails)") \ 2192 \ 2193 develop(bool, TraceReferenceGC, false, \ 2194 "Trace handling of soft/weak/final/phantom references") \ 2195 \ 2196 develop(bool, TraceFinalizerRegistration, false, \ 2197 "Trace registration of final references") \ 2198 \ 2199 notproduct(bool, TraceScavenge, false, \ 2200 "Trace scavenge") \ 2201 \ 2202 product_rw(bool, TraceClassLoading, false, \ 2203 "Trace all classes loaded") \ 2204 \ 2205 product(bool, TraceClassLoadingPreorder, false, \ 2206 "Trace all classes loaded in order referenced (not loaded)") \ 2207 \ 2208 product_rw(bool, TraceClassUnloading, false, \ 2209 "Trace unloading of classes") \ 2210 \ 2211 product_rw(bool, TraceLoaderConstraints, false, \ 2212 "Trace loader constraints") \ 2213 \ 2214 develop(bool, TraceClassLoaderData, false, \ 2215 "Trace class loader loader_data lifetime") \ 2216 \ 2217 product(uintx, InitialBootClassLoaderMetaspaceSize, 3*M, \ 2218 "Initial size of the boot class loader data metaspace") \ 2219 \ 2220 product(bool, TraceGen0Time, false, \ 2221 "Trace accumulated time for Gen 0 collection") \ 2222 \ 2223 product(bool, TraceGen1Time, false, \ 2224 "Trace accumulated time for Gen 1 collection") \ 2225 \ 2226 product(bool, PrintTenuringDistribution, false, \ 2227 "Print tenuring age information") \ 2228 \ 2229 product_rw(bool, PrintHeapAtGC, false, \ 2230 "Print heap layout before and after each GC") \ 2231 \ 2232 product_rw(bool, PrintHeapAtGCExtended, false, \ 2233 "Prints extended information about the layout of the heap " \ 2234 "when -XX:+PrintHeapAtGC is set") \ 2235 \ 2236 product(bool, PrintHeapAtSIGBREAK, true, \ 2237 "Print heap layout in response to SIGBREAK") \ 2238 \ 2239 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 2240 "Print a class histogram before any major stop-world GC") \ 2241 \ 2242 manageable(bool, PrintClassHistogramAfterFullGC, false, \ 2243 "Print a class histogram after any major stop-world GC") \ 2244 \ 2245 manageable(bool, PrintClassHistogram, false, \ 2246 "Print a histogram of class instances") \ 2247 \ 2248 develop(bool, TraceWorkGang, false, \ 2249 "Trace activities of work gangs") \ 2250 \ 2251 product(bool, TraceParallelOldGCTasks, false, \ 2252 "Trace multithreaded GC activity") \ 2253 \ 2254 develop(bool, TraceBlockOffsetTable, false, \ 2255 "Print BlockOffsetTable maps") \ 2256 \ 2257 develop(bool, TraceCardTableModRefBS, false, \ 2258 "Print CardTableModRefBS maps") \ 2259 \ 2260 develop(bool, TraceGCTaskManager, false, \ 2261 "Trace actions of the GC task manager") \ 2262 \ 2263 develop(bool, TraceGCTaskQueue, false, \ 2264 "Trace actions of the GC task queues") \ 2265 \ 2266 diagnostic(bool, TraceGCTaskThread, false, \ 2267 "Trace actions of the GC task threads") \ 2268 \ 2269 product(bool, PrintParallelOldGCPhaseTimes, false, \ 2270 "Print the time taken by each parallel old gc phase." \ 2271 "PrintGCDetails must also be enabled.") \ 2272 \ 2273 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2274 "Trace parallel old gc marking phase") \ 2275 \ 2276 develop(bool, TraceParallelOldGCSummaryPhase, false, \ 2277 "Trace parallel old gc summary phase") \ 2278 \ 2279 develop(bool, TraceParallelOldGCCompactionPhase, false, \ 2280 "Trace parallel old gc compaction phase") \ 2281 \ 2282 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2283 "Trace parallel old gc dense prefix computation") \ 2284 \ 2285 develop(bool, IgnoreLibthreadGPFault, false, \ 2286 "Suppress workaround for libthread GP fault") \ 2287 \ 2288 product(bool, PrintJNIGCStalls, false, \ 2289 "Print diagnostic message when GC is stalled" \ 2290 "by JNI critical section") \ 2291 \ 2292 /* GC log rotation setting */ \ 2293 \ 2294 product(bool, UseGCLogFileRotation, false, \ 2295 "Prevent large gclog file for long running app. " \ 2296 "Requires -Xloggc:<filename>") \ 2297 \ 2298 product(uintx, NumberOfGCLogFiles, 0, \ 2299 "Number of gclog files in rotation, " \ 2300 "Default: 0, no rotation") \ 2301 \ 2302 product(uintx, GCLogFileSize, 0, \ 2303 "GC log file size, Default: 0 bytes, no rotation " \ 2304 "Only valid with UseGCLogFileRotation") \ 2305 \ 2306 /* JVMTI heap profiling */ \ 2307 \ 2308 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2309 "Trace JVMTI object tagging calls") \ 2310 \ 2311 diagnostic(bool, VerifyBeforeIteration, false, \ 2312 "Verify memory system before JVMTI iteration") \ 2313 \ 2314 /* compiler interface */ \ 2315 \ 2316 develop(bool, CIPrintCompilerName, false, \ 2317 "when CIPrint is active, print the name of the active compiler") \ 2318 \ 2319 develop(bool, CIPrintCompileQueue, false, \ 2320 "display the contents of the compile queue whenever a " \ 2321 "compilation is enqueued") \ 2322 \ 2323 develop(bool, CIPrintRequests, false, \ 2324 "display every request for compilation") \ 2325 \ 2326 product(bool, CITime, false, \ 2327 "collect timing information for compilation") \ 2328 \ 2329 develop(bool, CITimeEach, false, \ 2330 "display timing information after each successful compilation") \ 2331 \ 2332 develop(bool, CICountOSR, false, \ 2333 "use a separate counter when assigning ids to osr compilations") \ 2334 \ 2335 develop(bool, CICompileNatives, true, \ 2336 "compile native methods if supported by the compiler") \ 2337 \ 2338 develop_pd(bool, CICompileOSR, \ 2339 "compile on stack replacement methods if supported by the " \ 2340 "compiler") \ 2341 \ 2342 develop(bool, CIPrintMethodCodes, false, \ 2343 "print method bytecodes of the compiled code") \ 2344 \ 2345 develop(bool, CIPrintTypeFlow, false, \ 2346 "print the results of ciTypeFlow analysis") \ 2347 \ 2348 develop(bool, CITraceTypeFlow, false, \ 2349 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2350 \ 2351 develop(intx, OSROnlyBCI, -1, \ 2352 "OSR only at this bci. Negative values mean exclude that bci") \ 2353 \ 2354 /* compiler */ \ 2355 \ 2356 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2357 "Number of compiler threads to run") \ 2358 \ 2359 product(intx, CompilationPolicyChoice, 0, \ 2360 "which compilation policy (0/1)") \ 2361 \ 2362 develop(bool, UseStackBanging, true, \ 2363 "use stack banging for stack overflow checks (required for " \ 2364 "proper StackOverflow handling; disable only to measure cost " \ 2365 "of stackbanging)") \ 2366 \ 2367 develop(bool, UseStrictFP, true, \ 2368 "use strict fp if modifier strictfp is set") \ 2369 \ 2370 develop(bool, GenerateSynchronizationCode, true, \ 2371 "generate locking/unlocking code for synchronized methods and " \ 2372 "monitors") \ 2373 \ 2374 develop(bool, GenerateCompilerNullChecks, true, \ 2375 "Generate explicit null checks for loads/stores/calls") \ 2376 \ 2377 develop(bool, GenerateRangeChecks, true, \ 2378 "Generate range checks for array accesses") \ 2379 \ 2380 develop_pd(bool, ImplicitNullChecks, \ 2381 "generate code for implicit null checks") \ 2382 \ 2383 product(bool, PrintSafepointStatistics, false, \ 2384 "print statistics about safepoint synchronization") \ 2385 \ 2386 product(intx, PrintSafepointStatisticsCount, 300, \ 2387 "total number of safepoint statistics collected " \ 2388 "before printing them out") \ 2389 \ 2390 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2391 "print safepoint statistics only when safepoint takes" \ 2392 " more than PrintSafepointSatisticsTimeout in millis") \ 2393 \ 2394 product(bool, TraceSafepointCleanupTime, false, \ 2395 "print the break down of clean up tasks performed during" \ 2396 " safepoint") \ 2397 \ 2398 product(bool, Inline, true, \ 2399 "enable inlining") \ 2400 \ 2401 product(bool, ClipInlining, true, \ 2402 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2403 \ 2404 develop(bool, UseCHA, true, \ 2405 "enable CHA") \ 2406 \ 2407 product(bool, UseTypeProfile, true, \ 2408 "Check interpreter profile for historically monomorphic calls") \ 2409 \ 2410 notproduct(bool, TimeCompiler, false, \ 2411 "time the compiler") \ 2412 \ 2413 diagnostic(bool, PrintInlining, false, \ 2414 "prints inlining optimizations") \ 2415 \ 2416 product(bool, UsePopCountInstruction, false, \ 2417 "Use population count instruction") \ 2418 \ 2419 develop(bool, EagerInitialization, false, \ 2420 "Eagerly initialize classes if possible") \ 2421 \ 2422 develop(bool, TraceMethodReplacement, false, \ 2423 "Print when methods are replaced do to recompilation") \ 2424 \ 2425 develop(bool, PrintMethodFlushing, false, \ 2426 "print the nmethods being flushed") \ 2427 \ 2428 develop(bool, UseRelocIndex, false, \ 2429 "use an index to speed random access to relocations") \ 2430 \ 2431 develop(bool, StressCodeBuffers, false, \ 2432 "Exercise code buffer expansion and other rare state changes") \ 2433 \ 2434 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2435 "Generate extra debugging info for non-safepoints in nmethods") \ 2436 \ 2437 product(bool, PrintVMOptions, false, \ 2438 "Print flags that appeared on the command line") \ 2439 \ 2440 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2441 "Ignore unrecognized VM options") \ 2442 \ 2443 product(bool, PrintCommandLineFlags, false, \ 2444 "Print flags specified on command line or set by ergonomics") \ 2445 \ 2446 product(bool, PrintFlagsInitial, false, \ 2447 "Print all VM flags before argument processing and exit VM") \ 2448 \ 2449 product(bool, PrintFlagsFinal, false, \ 2450 "Print all VM flags after argument and ergonomic processing") \ 2451 \ 2452 notproduct(bool, PrintFlagsWithComments, false, \ 2453 "Print all VM flags with default values and descriptions and exit")\ 2454 \ 2455 diagnostic(bool, SerializeVMOutput, true, \ 2456 "Use a mutex to serialize output to tty and hotspot.log") \ 2457 \ 2458 diagnostic(bool, DisplayVMOutput, true, \ 2459 "Display all VM output on the tty, independently of LogVMOutput") \ 2460 \ 2461 diagnostic(bool, LogVMOutput, trueInDebug, \ 2462 "Save VM output to hotspot.log, or to LogFile") \ 2463 \ 2464 diagnostic(ccstr, LogFile, NULL, \ 2465 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ 2466 \ 2467 product(ccstr, ErrorFile, NULL, \ 2468 "If an error occurs, save the error data to this file " \ 2469 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2470 \ 2471 product(bool, DisplayVMOutputToStderr, false, \ 2472 "If DisplayVMOutput is true, display all VM output to stderr") \ 2473 \ 2474 product(bool, DisplayVMOutputToStdout, false, \ 2475 "If DisplayVMOutput is true, display all VM output to stdout") \ 2476 \ 2477 product(bool, UseHeavyMonitors, false, \ 2478 "use heavyweight instead of lightweight Java monitors") \ 2479 \ 2480 product(bool, PrintStringTableStatistics, false, \ 2481 "print statistics about the StringTable and SymbolTable") \ 2482 \ 2483 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2484 "print histogram of the symbol table") \ 2485 \ 2486 notproduct(bool, ExitVMOnVerifyError, false, \ 2487 "standard exit from VM if bytecode verify error " \ 2488 "(only in debug mode)") \ 2489 \ 2490 notproduct(ccstr, AbortVMOnException, NULL, \ 2491 "Call fatal if this exception is thrown. Example: " \ 2492 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2493 \ 2494 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ 2495 "Call fatal if the exception pointed by AbortVMOnException " \ 2496 "has this message.") \ 2497 \ 2498 develop(bool, DebugVtables, false, \ 2499 "add debugging code to vtable dispatch") \ 2500 \ 2501 develop(bool, PrintVtables, false, \ 2502 "print vtables when printing klass") \ 2503 \ 2504 notproduct(bool, PrintVtableStats, false, \ 2505 "print vtables stats at end of run") \ 2506 \ 2507 develop(bool, TraceCreateZombies, false, \ 2508 "trace creation of zombie nmethods") \ 2509 \ 2510 notproduct(bool, IgnoreLockingAssertions, false, \ 2511 "disable locking assertions (for speed)") \ 2512 \ 2513 product(bool, RangeCheckElimination, true, \ 2514 "Split loop iterations to eliminate range checks") \ 2515 \ 2516 develop_pd(bool, UncommonNullCast, \ 2517 "track occurrences of null in casts; adjust compiler tactics") \ 2518 \ 2519 develop(bool, TypeProfileCasts, true, \ 2520 "treat casts like calls for purposes of type profiling") \ 2521 \ 2522 develop(bool, DelayCompilationDuringStartup, true, \ 2523 "Delay invoking the compiler until main application class is " \ 2524 "loaded") \ 2525 \ 2526 develop(bool, CompileTheWorld, false, \ 2527 "Compile all methods in all classes in bootstrap class path " \ 2528 "(stress test)") \ 2529 \ 2530 develop(bool, CompileTheWorldPreloadClasses, true, \ 2531 "Preload all classes used by a class before start loading") \ 2532 \ 2533 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 2534 "Force a safepoint every n compiles so sweeper can keep up") \ 2535 \ 2536 develop(bool, FillDelaySlots, true, \ 2537 "Fill delay slots (on SPARC only)") \ 2538 \ 2539 develop(bool, TimeLivenessAnalysis, false, \ 2540 "Time computation of bytecode liveness analysis") \ 2541 \ 2542 develop(bool, TraceLivenessGen, false, \ 2543 "Trace the generation of liveness analysis information") \ 2544 \ 2545 notproduct(bool, TraceLivenessQuery, false, \ 2546 "Trace queries of liveness analysis information") \ 2547 \ 2548 notproduct(bool, CollectIndexSetStatistics, false, \ 2549 "Collect information about IndexSets") \ 2550 \ 2551 develop(bool, UseLoopSafepoints, true, \ 2552 "Generate Safepoint nodes in every loop") \ 2553 \ 2554 develop(intx, FastAllocateSizeLimit, 128*K, \ 2555 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2556 "Inline allocations larger than this in doublewords must go slow")\ 2557 \ 2558 product(bool, AggressiveOpts, false, \ 2559 "Enable aggressive optimizations - see arguments.cpp") \ 2560 \ 2561 product(bool, UseStringCache, false, \ 2562 "Enable String cache capabilities on String.java") \ 2563 \ 2564 /* statistics */ \ 2565 develop(bool, CountCompiledCalls, false, \ 2566 "counts method invocations") \ 2567 \ 2568 notproduct(bool, CountRuntimeCalls, false, \ 2569 "counts VM runtime calls") \ 2570 \ 2571 develop(bool, CountJNICalls, false, \ 2572 "counts jni method invocations") \ 2573 \ 2574 notproduct(bool, CountJVMCalls, false, \ 2575 "counts jvm method invocations") \ 2576 \ 2577 notproduct(bool, CountRemovableExceptions, false, \ 2578 "count exceptions that could be replaced by branches due to " \ 2579 "inlining") \ 2580 \ 2581 notproduct(bool, ICMissHistogram, false, \ 2582 "produce histogram of IC misses") \ 2583 \ 2584 notproduct(bool, PrintClassStatistics, false, \ 2585 "prints class statistics at end of run") \ 2586 \ 2587 notproduct(bool, PrintMethodStatistics, false, \ 2588 "prints method statistics at end of run") \ 2589 \ 2590 /* interpreter */ \ 2591 develop(bool, ClearInterpreterLocals, false, \ 2592 "Always clear local variables of interpreter activations upon " \ 2593 "entry") \ 2594 \ 2595 product_pd(bool, RewriteBytecodes, \ 2596 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2597 \ 2598 product_pd(bool, RewriteFrequentPairs, \ 2599 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2600 \ 2601 diagnostic(bool, PrintInterpreter, false, \ 2602 "Prints the generated interpreter code") \ 2603 \ 2604 product(bool, UseInterpreter, true, \ 2605 "Use interpreter for non-compiled methods") \ 2606 \ 2607 develop(bool, UseFastSignatureHandlers, true, \ 2608 "Use fast signature handlers for native calls") \ 2609 \ 2610 product(bool, UseLoopCounter, true, \ 2611 "Increment invocation counter on backward branch") \ 2612 \ 2613 product(bool, UseFastEmptyMethods, true, \ 2614 "Use fast method entry code for empty methods") \ 2615 \ 2616 product(bool, UseFastAccessorMethods, true, \ 2617 "Use fast method entry code for accessor methods") \ 2618 \ 2619 product_pd(bool, UseOnStackReplacement, \ 2620 "Use on stack replacement, calls runtime if invoc. counter " \ 2621 "overflows in loop") \ 2622 \ 2623 notproduct(bool, TraceOnStackReplacement, false, \ 2624 "Trace on stack replacement") \ 2625 \ 2626 product_pd(bool, PreferInterpreterNativeStubs, \ 2627 "Use always interpreter stubs for native methods invoked via " \ 2628 "interpreter") \ 2629 \ 2630 develop(bool, CountBytecodes, false, \ 2631 "Count number of bytecodes executed") \ 2632 \ 2633 develop(bool, PrintBytecodeHistogram, false, \ 2634 "Print histogram of the executed bytecodes") \ 2635 \ 2636 develop(bool, PrintBytecodePairHistogram, false, \ 2637 "Print histogram of the executed bytecode pairs") \ 2638 \ 2639 diagnostic(bool, PrintSignatureHandlers, false, \ 2640 "Print code generated for native method signature handlers") \ 2641 \ 2642 develop(bool, VerifyOops, false, \ 2643 "Do plausibility checks for oops") \ 2644 \ 2645 develop(bool, CheckUnhandledOops, false, \ 2646 "Check for unhandled oops in VM code") \ 2647 \ 2648 develop(bool, VerifyJNIFields, trueInDebug, \ 2649 "Verify jfieldIDs for instance fields") \ 2650 \ 2651 notproduct(bool, VerifyJNIEnvThread, false, \ 2652 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2653 "from JNI") \ 2654 \ 2655 develop(bool, VerifyFPU, false, \ 2656 "Verify FPU state (check for NaN's, etc.)") \ 2657 \ 2658 develop(bool, VerifyThread, false, \ 2659 "Watch the thread register for corruption (SPARC only)") \ 2660 \ 2661 develop(bool, VerifyActivationFrameSize, false, \ 2662 "Verify that activation frame didn't become smaller than its " \ 2663 "minimal size") \ 2664 \ 2665 develop(bool, TraceFrequencyInlining, false, \ 2666 "Trace frequency based inlining") \ 2667 \ 2668 develop_pd(bool, InlineIntrinsics, \ 2669 "Inline intrinsics that can be statically resolved") \ 2670 \ 2671 product_pd(bool, ProfileInterpreter, \ 2672 "Profile at the bytecode level during interpretation") \ 2673 \ 2674 develop_pd(bool, ProfileTraps, \ 2675 "Profile deoptimization traps at the bytecode level") \ 2676 \ 2677 product(intx, ProfileMaturityPercentage, 20, \ 2678 "number of method invocations/branches (expressed as % of " \ 2679 "CompileThreshold) before using the method's profile") \ 2680 \ 2681 develop(bool, PrintMethodData, false, \ 2682 "Print the results of +ProfileInterpreter at end of run") \ 2683 \ 2684 develop(bool, VerifyDataPointer, trueInDebug, \ 2685 "Verify the method data pointer during interpreter profiling") \ 2686 \ 2687 develop(bool, VerifyCompiledCode, false, \ 2688 "Include miscellaneous runtime verifications in nmethod code; " \ 2689 "default off because it disturbs nmethod size heuristics") \ 2690 \ 2691 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 2692 "Manually make GC thread crash then dump java stack trace; " \ 2693 "Test only") \ 2694 \ 2695 /* compilation */ \ 2696 product(bool, UseCompiler, true, \ 2697 "use compilation") \ 2698 \ 2699 develop(bool, TraceCompilationPolicy, false, \ 2700 "Trace compilation policy") \ 2701 \ 2702 develop(bool, TimeCompilationPolicy, false, \ 2703 "Time the compilation policy") \ 2704 \ 2705 product(bool, UseCounterDecay, true, \ 2706 "adjust recompilation counters") \ 2707 \ 2708 develop(intx, CounterHalfLifeTime, 30, \ 2709 "half-life time of invocation counters (in secs)") \ 2710 \ 2711 develop(intx, CounterDecayMinIntervalLength, 500, \ 2712 "Min. ms. between invocation of CounterDecay") \ 2713 \ 2714 product(bool, AlwaysCompileLoopMethods, false, \ 2715 "when using recompilation, never interpret methods " \ 2716 "containing loops") \ 2717 \ 2718 product(bool, DontCompileHugeMethods, true, \ 2719 "don't compile methods > HugeMethodLimit") \ 2720 \ 2721 /* Bytecode escape analysis estimation. */ \ 2722 product(bool, EstimateArgEscape, true, \ 2723 "Analyze bytecodes to estimate escape state of arguments") \ 2724 \ 2725 product(intx, BCEATraceLevel, 0, \ 2726 "How much tracing to do of bytecode escape analysis estimates") \ 2727 \ 2728 product(intx, MaxBCEAEstimateLevel, 5, \ 2729 "Maximum number of nested calls that are analyzed by BC EA.") \ 2730 \ 2731 product(intx, MaxBCEAEstimateSize, 150, \ 2732 "Maximum bytecode size of a method to be analyzed by BC EA.") \ 2733 \ 2734 product(intx, AllocatePrefetchStyle, 1, \ 2735 "0 = no prefetch, " \ 2736 "1 = prefetch instructions for each allocation, " \ 2737 "2 = use TLAB watermark to gate allocation prefetch, " \ 2738 "3 = use BIS instruction on Sparc for allocation prefetch") \ 2739 \ 2740 product(intx, AllocatePrefetchDistance, -1, \ 2741 "Distance to prefetch ahead of allocation pointer") \ 2742 \ 2743 product(intx, AllocatePrefetchLines, 3, \ 2744 "Number of lines to prefetch ahead of array allocation pointer") \ 2745 \ 2746 product(intx, AllocateInstancePrefetchLines, 1, \ 2747 "Number of lines to prefetch ahead of instance allocation pointer") \ 2748 \ 2749 product(intx, AllocatePrefetchStepSize, 16, \ 2750 "Step size in bytes of sequential prefetch instructions") \ 2751 \ 2752 product(intx, AllocatePrefetchInstr, 0, \ 2753 "Prefetch instruction to prefetch ahead of allocation pointer") \ 2754 \ 2755 /* deoptimization */ \ 2756 develop(bool, TraceDeoptimization, false, \ 2757 "Trace deoptimization") \ 2758 \ 2759 develop(bool, DebugDeoptimization, false, \ 2760 "Tracing various information while debugging deoptimization") \ 2761 \ 2762 product(intx, SelfDestructTimer, 0, \ 2763 "Will cause VM to terminate after a given time (in minutes) " \ 2764 "(0 means off)") \ 2765 \ 2766 product(intx, MaxJavaStackTraceDepth, 1024, \ 2767 "Max. no. of lines in the stack trace for Java exceptions " \ 2768 "(0 means all)") \ 2769 \ 2770 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 2771 "Guarantee a safepoint (at least) every so many milliseconds " \ 2772 "(0 means none)")) \ 2773 \ 2774 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ 2775 "Guarantee a safepoint (at least) every so many milliseconds " \ 2776 "(0 means none)")) \ 2777 \ 2778 product(intx, SafepointTimeoutDelay, 10000, \ 2779 "Delay in milliseconds for option SafepointTimeout") \ 2780 \ 2781 product(intx, NmethodSweepFraction, 16, \ 2782 "Number of invocations of sweeper to cover all nmethods") \ 2783 \ 2784 product(intx, NmethodSweepCheckInterval, 5, \ 2785 "Compilers wake up every n seconds to possibly sweep nmethods") \ 2786 \ 2787 notproduct(bool, LogSweeper, false, \ 2788 "Keep a ring buffer of sweeper activity") \ 2789 \ 2790 notproduct(intx, SweeperLogEntries, 1024, \ 2791 "Number of records in the ring buffer of sweeper activity") \ 2792 \ 2793 notproduct(intx, MemProfilingInterval, 500, \ 2794 "Time between each invocation of the MemProfiler") \ 2795 \ 2796 develop(intx, MallocCatchPtr, -1, \ 2797 "Hit breakpoint when mallocing/freeing this pointer") \ 2798 \ 2799 notproduct(intx, AssertRepeat, 1, \ 2800 "number of times to evaluate expression in assert " \ 2801 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ 2802 \ 2803 notproduct(ccstrlist, SuppressErrorAt, "", \ 2804 "List of assertions (file:line) to muzzle") \ 2805 \ 2806 notproduct(uintx, HandleAllocationLimit, 1024, \ 2807 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 2808 "is used") \ 2809 \ 2810 develop(uintx, TotalHandleAllocationLimit, 1024, \ 2811 "Threshold for total handle allocation when " \ 2812 "+TraceHandleAllocation is used") \ 2813 \ 2814 develop(intx, StackPrintLimit, 100, \ 2815 "number of stack frames to print in VM-level stack dump") \ 2816 \ 2817 notproduct(intx, MaxElementPrintSize, 256, \ 2818 "maximum number of elements to print") \ 2819 \ 2820 notproduct(intx, MaxSubklassPrintSize, 4, \ 2821 "maximum number of subklasses to print when printing klass") \ 2822 \ 2823 product(intx, MaxInlineLevel, 9, \ 2824 "maximum number of nested calls that are inlined") \ 2825 \ 2826 product(intx, MaxRecursiveInlineLevel, 1, \ 2827 "maximum number of nested recursive calls that are inlined") \ 2828 \ 2829 product_pd(intx, InlineSmallCode, \ 2830 "Only inline already compiled methods if their code size is " \ 2831 "less than this") \ 2832 \ 2833 product(intx, MaxInlineSize, 35, \ 2834 "maximum bytecode size of a method to be inlined") \ 2835 \ 2836 product_pd(intx, FreqInlineSize, \ 2837 "maximum bytecode size of a frequent method to be inlined") \ 2838 \ 2839 product(intx, MaxTrivialSize, 6, \ 2840 "maximum bytecode size of a trivial method to be inlined") \ 2841 \ 2842 product(intx, MinInliningThreshold, 250, \ 2843 "min. invocation count a method needs to have to be inlined") \ 2844 \ 2845 develop(intx, MethodHistogramCutoff, 100, \ 2846 "cutoff value for method invoc. histogram (+CountCalls)") \ 2847 \ 2848 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2849 "# of interpreted methods to show in profile") \ 2850 \ 2851 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 2852 "# of compiled methods to show in profile") \ 2853 \ 2854 develop(intx, ProfilerNumberOfStubMethods, 25, \ 2855 "# of stub methods to show in profile") \ 2856 \ 2857 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2858 "# of runtime stub nodes to show in profile") \ 2859 \ 2860 product(intx, ProfileIntervalsTicks, 100, \ 2861 "# of ticks between printing of interval profile " \ 2862 "(+ProfileIntervals)") \ 2863 \ 2864 notproduct(intx, ScavengeALotInterval, 1, \ 2865 "Interval between which scavenge will occur with +ScavengeALot") \ 2866 \ 2867 notproduct(intx, FullGCALotInterval, 1, \ 2868 "Interval between which full gc will occur with +FullGCALot") \ 2869 \ 2870 notproduct(intx, FullGCALotStart, 0, \ 2871 "For which invocation to start FullGCAlot") \ 2872 \ 2873 notproduct(intx, FullGCALotDummies, 32*K, \ 2874 "Dummy object allocated with +FullGCALot, forcing all objects " \ 2875 "to move") \ 2876 \ 2877 develop(intx, DontYieldALotInterval, 10, \ 2878 "Interval between which yields will be dropped (milliseconds)") \ 2879 \ 2880 develop(intx, MinSleepInterval, 1, \ 2881 "Minimum sleep() interval (milliseconds) when " \ 2882 "ConvertSleepToYield is off (used for SOLARIS)") \ 2883 \ 2884 develop(intx, ProfilerPCTickThreshold, 15, \ 2885 "Number of ticks in a PC buckets to be a hotspot") \ 2886 \ 2887 notproduct(intx, DeoptimizeALotInterval, 5, \ 2888 "Number of exits until DeoptimizeALot kicks in") \ 2889 \ 2890 notproduct(intx, ZombieALotInterval, 5, \ 2891 "Number of exits until ZombieALot kicks in") \ 2892 \ 2893 develop(bool, StressNonEntrant, false, \ 2894 "Mark nmethods non-entrant at registration") \ 2895 \ 2896 diagnostic(intx, MallocVerifyInterval, 0, \ 2897 "if non-zero, verify C heap after every N calls to " \ 2898 "malloc/realloc/free") \ 2899 \ 2900 diagnostic(intx, MallocVerifyStart, 0, \ 2901 "if non-zero, start verifying C heap after Nth call to " \ 2902 "malloc/realloc/free") \ 2903 \ 2904 product(intx, TypeProfileWidth, 2, \ 2905 "number of receiver types to record in call/cast profile") \ 2906 \ 2907 develop(intx, BciProfileWidth, 2, \ 2908 "number of return bci's to record in ret profile") \ 2909 \ 2910 product(intx, PerMethodRecompilationCutoff, 400, \ 2911 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 2912 \ 2913 product(intx, PerBytecodeRecompilationCutoff, 200, \ 2914 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 2915 \ 2916 product(intx, PerMethodTrapLimit, 100, \ 2917 "Limit on traps (of one kind) in a method (includes inlines)") \ 2918 \ 2919 product(intx, PerBytecodeTrapLimit, 4, \ 2920 "Limit on traps (of one kind) at a particular BCI") \ 2921 \ 2922 develop(intx, InlineFrequencyRatio, 20, \ 2923 "Ratio of call site execution to caller method invocation") \ 2924 \ 2925 develop_pd(intx, InlineFrequencyCount, \ 2926 "Count of call site execution necessary to trigger frequent " \ 2927 "inlining") \ 2928 \ 2929 develop(intx, InlineThrowCount, 50, \ 2930 "Force inlining of interpreted methods that throw this often") \ 2931 \ 2932 develop(intx, InlineThrowMaxSize, 200, \ 2933 "Force inlining of throwing methods smaller than this") \ 2934 \ 2935 develop(intx, ProfilerNodeSize, 1024, \ 2936 "Size in K to allocate for the Profile Nodes of each thread") \ 2937 \ 2938 product_pd(intx, PreInflateSpin, \ 2939 "Number of times to spin wait before inflation") \ 2940 \ 2941 /* gc parameters */ \ 2942 product(uintx, InitialHeapSize, 0, \ 2943 "Initial heap size (in bytes); zero means OldSize + NewSize") \ 2944 \ 2945 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ 2946 "Maximum heap size (in bytes)") \ 2947 \ 2948 product(uintx, OldSize, ScaleForWordSize(4*M), \ 2949 "Initial tenured generation size (in bytes)") \ 2950 \ 2951 product(uintx, NewSize, ScaleForWordSize(1*M), \ 2952 "Initial new generation size (in bytes)") \ 2953 \ 2954 product(uintx, MaxNewSize, max_uintx, \ 2955 "Maximum new generation size (in bytes), max_uintx means set " \ 2956 "ergonomically") \ 2957 \ 2958 product(uintx, PretenureSizeThreshold, 0, \ 2959 "Maximum size in bytes of objects allocated in DefNew " \ 2960 "generation; zero means no maximum") \ 2961 \ 2962 product(uintx, TLABSize, 0, \ 2963 "Starting TLAB size (in bytes); zero means set ergonomically") \ 2964 \ 2965 product(uintx, MinTLABSize, 2*K, \ 2966 "Minimum allowed TLAB size (in bytes)") \ 2967 \ 2968 product(uintx, TLABAllocationWeight, 35, \ 2969 "Allocation averaging weight") \ 2970 \ 2971 product(uintx, TLABWasteTargetPercent, 1, \ 2972 "Percentage of Eden that can be wasted") \ 2973 \ 2974 product(uintx, TLABRefillWasteFraction, 64, \ 2975 "Max TLAB waste at a refill (internal fragmentation)") \ 2976 \ 2977 product(uintx, TLABWasteIncrement, 4, \ 2978 "Increment allowed waste at slow allocation") \ 2979 \ 2980 product(intx, SurvivorRatio, 8, \ 2981 "Ratio of eden/survivor space size") \ 2982 \ 2983 product(intx, NewRatio, 2, \ 2984 "Ratio of new/old generation sizes") \ 2985 \ 2986 product_pd(uintx, NewSizeThreadIncrease, \ 2987 "Additional size added to desired new generation size per " \ 2988 "non-daemon thread (in bytes)") \ 2989 \ 2990 product_pd(uintx, MetaspaceSize, \ 2991 "Initial size of Metaspaces (in bytes)") \ 2992 \ 2993 product(uintx, MaxMetaspaceSize, max_uintx, \ 2994 "Maximum size of Metaspaces (in bytes)") \ 2995 \ 2996 product(uintx, ClassMetaspaceSize, 2*M, \ 2997 "Maximum size of InstanceKlass area in Metaspace used for " \ 2998 "UseCompressedKlassPointers") \ 2999 \ 3000 product(uintx, MinHeapFreeRatio, 40, \ 3001 "Min percentage of heap free after GC to avoid expansion") \ 3002 \ 3003 product(uintx, MaxHeapFreeRatio, 70, \ 3004 "Max percentage of heap free after GC to avoid shrinking") \ 3005 \ 3006 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 3007 "Number of milliseconds per MB of free space in the heap") \ 3008 \ 3009 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 3010 "Min change in heap space due to GC (in bytes)") \ 3011 \ 3012 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 3013 "Min expansion of permanent heap (in bytes)") \ 3014 \ 3015 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3016 "Max expansion of permanent heap without full GC (in bytes)") \ 3017 \ 3018 product(intx, QueuedAllocationWarningCount, 0, \ 3019 "Number of times an allocation that queues behind a GC " \ 3020 "will retry before printing a warning") \ 3021 \ 3022 diagnostic(uintx, VerifyGCStartAt, 0, \ 3023 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3024 \ 3025 diagnostic(intx, VerifyGCLevel, 0, \ 3026 "Generation level at which to start +VerifyBefore/AfterGC") \ 3027 \ 3028 product(uintx, MaxTenuringThreshold, 15, \ 3029 "Maximum value for tenuring threshold") \ 3030 \ 3031 product(uintx, InitialTenuringThreshold, 7, \ 3032 "Initial value for tenuring threshold") \ 3033 \ 3034 product(intx, TargetSurvivorRatio, 50, \ 3035 "Desired percentage of survivor space used after scavenge") \ 3036 \ 3037 product(uintx, MarkSweepDeadRatio, 5, \ 3038 "Percentage (0-100) of the old gen allowed as dead wood." \ 3039 "Serial mark sweep treats this as both the min and max value." \ 3040 "CMS uses this value only if it falls back to mark sweep." \ 3041 "Par compact uses a variable scale based on the density of the" \ 3042 "generation and treats this as the max value when the heap is" \ 3043 "either completely full or completely empty. Par compact also" \ 3044 "has a smaller default value; see arguments.cpp.") \ 3045 \ 3046 product(intx, MarkSweepAlwaysCompactCount, 4, \ 3047 "How often should we fully compact the heap (ignoring the dead " \ 3048 "space parameters)") \ 3049 \ 3050 product(intx, PrintCMSStatistics, 0, \ 3051 "Statistics for CMS") \ 3052 \ 3053 product(bool, PrintCMSInitiationStatistics, false, \ 3054 "Statistics for initiating a CMS collection") \ 3055 \ 3056 product(intx, PrintFLSStatistics, 0, \ 3057 "Statistics for CMS' FreeListSpace") \ 3058 \ 3059 product(intx, PrintFLSCensus, 0, \ 3060 "Census for CMS' FreeListSpace") \ 3061 \ 3062 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 3063 "Delay in ms between expansion and allocation") \ 3064 \ 3065 develop(uintx, GCWorkerDelayMillis, 0, \ 3066 "Delay in ms in scheduling GC workers") \ 3067 \ 3068 product(intx, DeferThrSuspendLoopCount, 4000, \ 3069 "(Unstable) Number of times to iterate in safepoint loop " \ 3070 " before blocking VM threads ") \ 3071 \ 3072 product(intx, DeferPollingPageLoopCount, -1, \ 3073 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 3074 "before changing safepoint polling page to RO ") \ 3075 \ 3076 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 3077 \ 3078 product(bool, PSChunkLargeArrays, true, \ 3079 "true: process large arrays in chunks") \ 3080 \ 3081 product(uintx, GCDrainStackTargetSize, 64, \ 3082 "how many entries we'll try to leave on the stack during " \ 3083 "parallel GC") \ 3084 \ 3085 /* stack parameters */ \ 3086 product_pd(intx, StackYellowPages, \ 3087 "Number of yellow zone (recoverable overflows) pages") \ 3088 \ 3089 product_pd(intx, StackRedPages, \ 3090 "Number of red zone (unrecoverable overflows) pages") \ 3091 \ 3092 product_pd(intx, StackShadowPages, \ 3093 "Number of shadow zone (for overflow checking) pages" \ 3094 " this should exceed the depth of the VM and native call stack") \ 3095 \ 3096 product_pd(intx, ThreadStackSize, \ 3097 "Thread Stack Size (in Kbytes)") \ 3098 \ 3099 product_pd(intx, VMThreadStackSize, \ 3100 "Non-Java Thread Stack Size (in Kbytes)") \ 3101 \ 3102 product_pd(intx, CompilerThreadStackSize, \ 3103 "Compiler Thread Stack Size (in Kbytes)") \ 3104 \ 3105 develop_pd(uintx, JVMInvokeMethodSlack, \ 3106 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 3107 \ 3108 product(uintx, ThreadSafetyMargin, 50*M, \ 3109 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ 3110 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ 3111 "disable this feature") \ 3112 \ 3113 /* code cache parameters */ \ 3114 develop(uintx, CodeCacheSegmentSize, 64, \ 3115 "Code cache segment size (in bytes) - smallest unit of " \ 3116 "allocation") \ 3117 \ 3118 develop_pd(intx, CodeEntryAlignment, \ 3119 "Code entry alignment for generated code (in bytes)") \ 3120 \ 3121 product_pd(intx, OptoLoopAlignment, \ 3122 "Align inner loops to zero relative to this modulus") \ 3123 \ 3124 product_pd(uintx, InitialCodeCacheSize, \ 3125 "Initial code cache size (in bytes)") \ 3126 \ 3127 product_pd(uintx, ReservedCodeCacheSize, \ 3128 "Reserved code cache size (in bytes) - maximum code cache size") \ 3129 \ 3130 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ 3131 "When less than X space left, we stop compiling.") \ 3132 \ 3133 product_pd(uintx, CodeCacheExpansionSize, \ 3134 "Code cache expansion size (in bytes)") \ 3135 \ 3136 develop_pd(uintx, CodeCacheMinBlockLength, \ 3137 "Minimum number of segments in a code cache block.") \ 3138 \ 3139 notproduct(bool, ExitOnFullCodeCache, false, \ 3140 "Exit the VM if we fill the code cache.") \ 3141 \ 3142 product(bool, UseCodeCacheFlushing, true, \ 3143 "Attempt to clean the code cache before shutting off compiler") \ 3144 \ 3145 product(intx, MinCodeCacheFlushingInterval, 30, \ 3146 "Min number of seconds between code cache cleaning sessions") \ 3147 \ 3148 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ 3149 "When less than X space left, start code cache cleaning") \ 3150 \ 3151 /* interpreter debugging */ \ 3152 develop(intx, BinarySwitchThreshold, 5, \ 3153 "Minimal number of lookupswitch entries for rewriting to binary " \ 3154 "switch") \ 3155 \ 3156 develop(intx, StopInterpreterAt, 0, \ 3157 "Stops interpreter execution at specified bytecode number") \ 3158 \ 3159 develop(intx, TraceBytecodesAt, 0, \ 3160 "Traces bytecodes starting with specified bytecode number") \ 3161 \ 3162 /* compiler interface */ \ 3163 develop(intx, CIStart, 0, \ 3164 "the id of the first compilation to permit") \ 3165 \ 3166 develop(intx, CIStop, -1, \ 3167 "the id of the last compilation to permit") \ 3168 \ 3169 develop(intx, CIStartOSR, 0, \ 3170 "the id of the first osr compilation to permit " \ 3171 "(CICountOSR must be on)") \ 3172 \ 3173 develop(intx, CIStopOSR, -1, \ 3174 "the id of the last osr compilation to permit " \ 3175 "(CICountOSR must be on)") \ 3176 \ 3177 develop(intx, CIBreakAtOSR, -1, \ 3178 "id of osr compilation to break at") \ 3179 \ 3180 develop(intx, CIBreakAt, -1, \ 3181 "id of compilation to break at") \ 3182 \ 3183 product(ccstrlist, CompileOnly, "", \ 3184 "List of methods (pkg/class.name) to restrict compilation to") \ 3185 \ 3186 product(ccstr, CompileCommandFile, NULL, \ 3187 "Read compiler commands from this file [.hotspot_compiler]") \ 3188 \ 3189 product(ccstrlist, CompileCommand, "", \ 3190 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3191 \ 3192 product(bool, CICompilerCountPerCPU, false, \ 3193 "1 compiler thread for log(N CPUs)") \ 3194 \ 3195 develop(intx, CIFireOOMAt, -1, \ 3196 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3197 "(non-negative value throws OOM after this many CI accesses " \ 3198 "in each compile)") \ 3199 \ 3200 notproduct(bool, CIObjectFactoryVerify, false, \ 3201 "enable potentially expensive verification in ciObjectFactory") \ 3202 \ 3203 /* Priorities */ \ 3204 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3205 \ 3206 product(intx, ThreadPriorityPolicy, 0, \ 3207 "0 : Normal. "\ 3208 " VM chooses priorities that are appropriate for normal "\ 3209 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3210 " to normal native priority. Java priorities below NORM_PRIORITY"\ 3211 " map to lower native priority values. On Windows applications"\ 3212 " are allowed to use higher native priorities. However, with "\ 3213 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ 3214 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ 3215 " interfere with system threads. On Linux thread priorities "\ 3216 " are ignored because the OS does not support static priority "\ 3217 " in SCHED_OTHER scheduling class which is the only choice for"\ 3218 " non-root, non-realtime applications. "\ 3219 "1 : Aggressive. "\ 3220 " Java thread priorities map over to the entire range of "\ 3221 " native thread priorities. Higher Java thread priorities map "\ 3222 " to higher native thread priorities. This policy should be "\ 3223 " used with care, as sometimes it can cause performance "\ 3224 " degradation in the application and/or the entire system. On "\ 3225 " Linux this policy requires root privilege.") \ 3226 \ 3227 product(bool, ThreadPriorityVerbose, false, \ 3228 "Print priority changes") \ 3229 \ 3230 product(intx, DefaultThreadPriority, -1, \ 3231 "The native priority at which threads run if not elsewhere " \ 3232 "specified (-1 means no change)") \ 3233 \ 3234 product(intx, CompilerThreadPriority, -1, \ 3235 "The native priority at which compiler threads should run " \ 3236 "(-1 means no change)") \ 3237 \ 3238 product(intx, VMThreadPriority, -1, \ 3239 "The native priority at which the VM thread should run " \ 3240 "(-1 means no change)") \ 3241 \ 3242 product(bool, CompilerThreadHintNoPreempt, true, \ 3243 "(Solaris only) Give compiler threads an extra quanta") \ 3244 \ 3245 product(bool, VMThreadHintNoPreempt, false, \ 3246 "(Solaris only) Give VM thread an extra quanta") \ 3247 \ 3248 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3249 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3250 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3251 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3252 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3253 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3254 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3255 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3256 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3257 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ 3258 \ 3259 experimental(bool, UseCriticalJavaThreadPriority, false, \ 3260 "Java thread priority 10 maps to critical scheduling priority") \ 3261 \ 3262 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 3263 "Compiler thread(s) run at critical scheduling priority") \ 3264 \ 3265 experimental(bool, UseCriticalCMSThreadPriority, false, \ 3266 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 3267 \ 3268 /* compiler debugging */ \ 3269 notproduct(intx, CompileTheWorldStartAt, 1, \ 3270 "First class to consider when using +CompileTheWorld") \ 3271 \ 3272 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3273 "Last class to consider when using +CompileTheWorld") \ 3274 \ 3275 develop(intx, NewCodeParameter, 0, \ 3276 "Testing Only: Create a dedicated integer parameter before " \ 3277 "putback") \ 3278 \ 3279 /* new oopmap storage allocation */ \ 3280 develop(intx, MinOopMapAllocation, 8, \ 3281 "Minimum number of OopMap entries in an OopMapSet") \ 3282 \ 3283 /* Background Compilation */ \ 3284 develop(intx, LongCompileThreshold, 50, \ 3285 "Used with +TraceLongCompiles") \ 3286 \ 3287 product(intx, StarvationMonitorInterval, 200, \ 3288 "Pause between each check in ms") \ 3289 \ 3290 /* recompilation */ \ 3291 product_pd(intx, CompileThreshold, \ 3292 "number of interpreted method invocations before (re-)compiling") \ 3293 \ 3294 product_pd(intx, BackEdgeThreshold, \ 3295 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ 3296 \ 3297 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 3298 "Interpreter (tier 0) invocation notification frequency.") \ 3299 \ 3300 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 3301 "C1 without MDO (tier 2) invocation notification frequency.") \ 3302 \ 3303 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 3304 "C1 with MDO profiling (tier 3) invocation notification " \ 3305 "frequency.") \ 3306 \ 3307 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 3308 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 3309 \ 3310 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 3311 "Interpreter (tier 0) invocation notification frequency.") \ 3312 \ 3313 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 3314 "C1 without MDO (tier 2) invocation notification frequency.") \ 3315 \ 3316 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 3317 "C1 with MDO profiling (tier 3) invocation notification " \ 3318 "frequency.") \ 3319 \ 3320 product(intx, Tier2CompileThreshold, 0, \ 3321 "threshold at which tier 2 compilation is invoked") \ 3322 \ 3323 product(intx, Tier2BackEdgeThreshold, 0, \ 3324 "Back edge threshold at which tier 2 compilation is invoked") \ 3325 \ 3326 product(intx, Tier3InvocationThreshold, 200, \ 3327 "Compile if number of method invocations crosses this " \ 3328 "threshold") \ 3329 \ 3330 product(intx, Tier3MinInvocationThreshold, 100, \ 3331 "Minimum invocation to compile at tier 3") \ 3332 \ 3333 product(intx, Tier3CompileThreshold, 2000, \ 3334 "Threshold at which tier 3 compilation is invoked (invocation " \ 3335 "minimum must be satisfied.") \ 3336 \ 3337 product(intx, Tier3BackEdgeThreshold, 60000, \ 3338 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 3339 \ 3340 product(intx, Tier4InvocationThreshold, 5000, \ 3341 "Compile if number of method invocations crosses this " \ 3342 "threshold") \ 3343 \ 3344 product(intx, Tier4MinInvocationThreshold, 600, \ 3345 "Minimum invocation to compile at tier 4") \ 3346 \ 3347 product(intx, Tier4CompileThreshold, 15000, \ 3348 "Threshold at which tier 4 compilation is invoked (invocation " \ 3349 "minimum must be satisfied.") \ 3350 \ 3351 product(intx, Tier4BackEdgeThreshold, 40000, \ 3352 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 3353 \ 3354 product(intx, Tier3DelayOn, 5, \ 3355 "If C2 queue size grows over this amount per compiler thread " \ 3356 "stop compiling at tier 3 and start compiling at tier 2") \ 3357 \ 3358 product(intx, Tier3DelayOff, 2, \ 3359 "If C2 queue size is less than this amount per compiler thread " \ 3360 "allow methods compiled at tier 2 transition to tier 3") \ 3361 \ 3362 product(intx, Tier3LoadFeedback, 5, \ 3363 "Tier 3 thresholds will increase twofold when C1 queue size " \ 3364 "reaches this amount per compiler thread") \ 3365 \ 3366 product(intx, Tier4LoadFeedback, 3, \ 3367 "Tier 4 thresholds will increase twofold when C2 queue size " \ 3368 "reaches this amount per compiler thread") \ 3369 \ 3370 product(intx, TieredCompileTaskTimeout, 50, \ 3371 "Kill compile task if method was not used within " \ 3372 "given timeout in milliseconds") \ 3373 \ 3374 product(intx, TieredStopAtLevel, 4, \ 3375 "Stop at given compilation level") \ 3376 \ 3377 product(intx, Tier0ProfilingStartPercentage, 200, \ 3378 "Start profiling in interpreter if the counters exceed tier 3" \ 3379 "thresholds by the specified percentage") \ 3380 \ 3381 product(intx, TieredRateUpdateMinTime, 1, \ 3382 "Minimum rate sampling interval (in milliseconds)") \ 3383 \ 3384 product(intx, TieredRateUpdateMaxTime, 25, \ 3385 "Maximum rate sampling interval (in milliseconds)") \ 3386 \ 3387 product_pd(bool, TieredCompilation, \ 3388 "Enable tiered compilation") \ 3389 \ 3390 product(bool, PrintTieredEvents, false, \ 3391 "Print tiered events notifications") \ 3392 \ 3393 product_pd(intx, OnStackReplacePercentage, \ 3394 "NON_TIERED number of method invocations/branches (expressed as %"\ 3395 "of CompileThreshold) before (re-)compiling OSR code") \ 3396 \ 3397 product(intx, InterpreterProfilePercentage, 33, \ 3398 "NON_TIERED number of method invocations/branches (expressed as %"\ 3399 "of CompileThreshold) before profiling in the interpreter") \ 3400 \ 3401 develop(intx, MaxRecompilationSearchLength, 10, \ 3402 "max. # frames to inspect searching for recompilee") \ 3403 \ 3404 develop(intx, MaxInterpretedSearchLength, 3, \ 3405 "max. # interp. frames to skip when searching for recompilee") \ 3406 \ 3407 develop(intx, DesiredMethodLimit, 8000, \ 3408 "desired max. method size (in bytecodes) after inlining") \ 3409 \ 3410 develop(intx, HugeMethodLimit, 8000, \ 3411 "don't compile methods larger than this if " \ 3412 "+DontCompileHugeMethods") \ 3413 \ 3414 /* New JDK 1.4 reflection implementation */ \ 3415 \ 3416 develop(bool, UseNewReflection, true, \ 3417 "Temporary flag for transition to reflection based on dynamic " \ 3418 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ 3419 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ 3420 "changes were needed") \ 3421 \ 3422 develop(bool, VerifyReflectionBytecodes, false, \ 3423 "Force verification of 1.4 reflection bytecodes. Does not work " \ 3424 "in situations like that described in 4486457 or for " \ 3425 "constructors generated for serialization, so can not be enabled "\ 3426 "in product.") \ 3427 \ 3428 product(bool, ReflectionWrapResolutionErrors, true, \ 3429 "Temporary flag for transition to AbstractMethodError wrapped " \ 3430 "in InvocationTargetException. See 6531596") \ 3431 \ 3432 \ 3433 develop(intx, FastSuperclassLimit, 8, \ 3434 "Depth of hardwired instanceof accelerator array") \ 3435 \ 3436 /* Properties for Java libraries */ \ 3437 \ 3438 product(uintx, MaxDirectMemorySize, 0, \ 3439 "Maximum total size of NIO direct-buffer allocations") \ 3440 \ 3441 /* temporary developer defined flags */ \ 3442 \ 3443 diagnostic(bool, UseNewCode, false, \ 3444 "Testing Only: Use the new version while testing") \ 3445 \ 3446 diagnostic(bool, UseNewCode2, false, \ 3447 "Testing Only: Use the new version while testing") \ 3448 \ 3449 diagnostic(bool, UseNewCode3, false, \ 3450 "Testing Only: Use the new version while testing") \ 3451 \ 3452 /* flags for performance data collection */ \ 3453 \ 3454 product(bool, UsePerfData, falseInEmbedded, \ 3455 "Flag to disable jvmstat instrumentation for performance testing" \ 3456 "and problem isolation purposes.") \ 3457 \ 3458 product(bool, PerfDataSaveToFile, false, \ 3459 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3460 \ 3461 product(ccstr, PerfDataSaveFile, NULL, \ 3462 "Save PerfData memory to the specified absolute pathname," \ 3463 "%p in the file name if present will be replaced by pid") \ 3464 \ 3465 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ 3466 "Data sampling interval in milliseconds") \ 3467 \ 3468 develop(bool, PerfTraceDataCreation, false, \ 3469 "Trace creation of Performance Data Entries") \ 3470 \ 3471 develop(bool, PerfTraceMemOps, false, \ 3472 "Trace PerfMemory create/attach/detach calls") \ 3473 \ 3474 product(bool, PerfDisableSharedMem, false, \ 3475 "Store performance data in standard memory") \ 3476 \ 3477 product(intx, PerfDataMemorySize, 32*K, \ 3478 "Size of performance data memory region. Will be rounded " \ 3479 "up to a multiple of the native os page size.") \ 3480 \ 3481 product(intx, PerfMaxStringConstLength, 1024, \ 3482 "Maximum PerfStringConstant string length before truncation") \ 3483 \ 3484 product(bool, PerfAllowAtExitRegistration, false, \ 3485 "Allow registration of atexit() methods") \ 3486 \ 3487 product(bool, PerfBypassFileSystemCheck, false, \ 3488 "Bypass Win32 file system criteria checks (Windows Only)") \ 3489 \ 3490 product(intx, UnguardOnExecutionViolation, 0, \ 3491 "Unguard page and retry on no-execute fault (Win32 only)" \ 3492 "0=off, 1=conservative, 2=aggressive") \ 3493 \ 3494 /* Serviceability Support */ \ 3495 \ 3496 product(bool, ManagementServer, false, \ 3497 "Create JMX Management Server") \ 3498 \ 3499 product(bool, DisableAttachMechanism, false, \ 3500 "Disable mechanism that allows tools to attach to this VM") \ 3501 \ 3502 product(bool, StartAttachListener, false, \ 3503 "Always start Attach Listener at VM startup") \ 3504 \ 3505 manageable(bool, PrintConcurrentLocks, false, \ 3506 "Print java.util.concurrent locks in thread dump") \ 3507 \ 3508 product(bool, TransmitErrorReport, false, \ 3509 "Enable error report transmission on erroneous termination") \ 3510 \ 3511 product(ccstr, ErrorReportServer, NULL, \ 3512 "Override built-in error report server address") \ 3513 \ 3514 /* Shared spaces */ \ 3515 \ 3516 product(bool, UseSharedSpaces, true, \ 3517 "Use shared spaces in the permanent generation") \ 3518 \ 3519 product(bool, RequireSharedSpaces, false, \ 3520 "Require shared spaces in the permanent generation") \ 3521 \ 3522 product(bool, DumpSharedSpaces, false, \ 3523 "Special mode: JVM reads a class list, loads classes, builds " \ 3524 "shared spaces, and dumps the shared spaces to a file to be " \ 3525 "used in future JVM runs.") \ 3526 \ 3527 product(bool, PrintSharedSpaces, false, \ 3528 "Print usage of shared spaces") \ 3529 \ 3530 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3531 "Size of read-write space in permanent generation (in bytes)") \ 3532 \ 3533 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3534 "Size of read-only space in permanent generation (in bytes)") \ 3535 \ 3536 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ 3537 "Size of the shared data area adjacent to the heap (in bytes)") \ 3538 \ 3539 product(uintx, SharedMiscCodeSize, 120*K, \ 3540 "Size of the shared code area adjacent to the heap (in bytes)") \ 3541 \ 3542 product(uintx, SharedDummyBlockSize, 0, \ 3543 "Size of dummy block used to shift heap addresses (in bytes)") \ 3544 \ 3545 diagnostic(bool, EnableInvokeDynamic, true, \ 3546 "support JSR 292 (method handles, invokedynamic, " \ 3547 "anonymous classes") \ 3548 \ 3549 diagnostic(bool, PrintMethodHandleStubs, false, \ 3550 "Print generated stub code for method handles") \ 3551 \ 3552 develop(bool, TraceMethodHandles, false, \ 3553 "trace internal method handle operations") \ 3554 \ 3555 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 3556 "perform extra checks when constructing method handles") \ 3557 \ 3558 diagnostic(bool, ShowHiddenFrames, false, \ 3559 "show method handle implementation frames (usually hidden)") \ 3560 \ 3561 experimental(bool, TrustFinalNonStaticFields, false, \ 3562 "trust final non-static declarations for constant folding") \ 3563 \ 3564 develop(bool, TraceInvokeDynamic, false, \ 3565 "trace internal invoke dynamic operations") \ 3566 \ 3567 diagnostic(bool, PauseAtStartup, false, \ 3568 "Causes the VM to pause at startup time and wait for the pause " \ 3569 "file to be removed (default: ./vm.paused.<pid>)") \ 3570 \ 3571 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3572 "The file to create and for whose removal to await when pausing " \ 3573 "at startup. (default: ./vm.paused.<pid>)") \ 3574 \ 3575 diagnostic(bool, PauseAtExit, false, \ 3576 "Pause and wait for keypress on exit if a debugger is attached") \ 3577 \ 3578 product(bool, ExtendedDTraceProbes, false, \ 3579 "Enable performance-impacting dtrace probes") \ 3580 \ 3581 product(bool, DTraceMethodProbes, false, \ 3582 "Enable dtrace probes for method-entry and method-exit") \ 3583 \ 3584 product(bool, DTraceAllocProbes, false, \ 3585 "Enable dtrace probes for object allocation") \ 3586 \ 3587 product(bool, DTraceMonitorProbes, false, \ 3588 "Enable dtrace probes for monitor events") \ 3589 \ 3590 product(bool, RelaxAccessControlCheck, false, \ 3591 "Relax the access control checks in the verifier") \ 3592 \ 3593 diagnostic(bool, PrintDTraceDOF, false, \ 3594 "Print the DTrace DOF passed to the system for JSDT probes") \ 3595 \ 3596 product(uintx, StringTableSize, 1009, \ 3597 "Number of buckets in the interned String table") \ 3598 \ 3599 product(bool, UseVMInterruptibleIO, false, \ 3600 "(Unstable, Solaris-specific) Thread interrupt before or with " \ 3601 "EINTR for I/O operations results in OS_INTRPT. The default value"\ 3602 " of this flag is true for JDK 6 and earlier") \ 3603 \ 3604 diagnostic(bool, WhiteBoxAPI, false, \ 3605 "Enable internal testing APIs") \ 3606 \ 3607 product(bool, PrintGCCause, true, \ 3608 "Include GC cause in GC logging") 3609 3610/* 3611 * Macros for factoring of globals 3612 */ 3613 3614// Interface macros 3615#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3616#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 3617#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 3618#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 3619#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 3620#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 3621#ifdef PRODUCT 3622#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 3623#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 3624#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) 3625#else 3626#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 3627#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 3628#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3629#endif 3630// Special LP64 flags, product only needed for now. 3631#ifdef _LP64 3632#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3633#else 3634#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 3635#endif // _LP64 3636 3637// Implementation macros 3638#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 3639#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 3640#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 3641#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 3642#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 3643#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 3644#ifdef PRODUCT 3645#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ 3646#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ 3647#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 3648#else 3649#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 3650#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 3651#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 3652#endif 3653#ifdef _LP64 3654#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 3655#else 3656#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 3657#endif // _LP64 3658 3659RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG, DECLARE_LP64_PRODUCT_FLAG) 3660 3661RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) 3662 3663ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) 3664 3665// Extensions 3666 3667#include "runtime/globals_ext.hpp" 3668 3669#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 3670