globals.hpp revision 12630:ed9e29cd84f5
120253Sjoerg/* 2330449Seadler * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. 3330449Seadler * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 420302Sjoerg * 520302Sjoerg * This code is free software; you can redistribute it and/or modify it 620253Sjoerg * under the terms of the GNU General Public License version 2 only, as 720253Sjoerg * published by the Free Software Foundation. 820253Sjoerg * 920253Sjoerg * This code is distributed in the hope that it will be useful, but WITHOUT 1020253Sjoerg * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1120302Sjoerg * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1220253Sjoerg * version 2 for more details (a copy is included in the LICENSE file that 1320253Sjoerg * accompanied this code). 1420253Sjoerg * 1520253Sjoerg * You should have received a copy of the GNU General Public License version 1620302Sjoerg * 2 along with this work; if not, write to the Free Software Foundation, 1720253Sjoerg * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1820253Sjoerg * 1920302Sjoerg * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2020253Sjoerg * or visit www.oracle.com if you need additional information or have any 2120253Sjoerg * questions. 2220253Sjoerg * 2320253Sjoerg */ 2420253Sjoerg 2520253Sjoerg#ifndef SHARE_VM_RUNTIME_GLOBALS_HPP 2620253Sjoerg#define SHARE_VM_RUNTIME_GLOBALS_HPP 2744229Sdavidn 2820253Sjoerg#include "utilities/debug.hpp" 2920253Sjoerg#include "utilities/macros.hpp" 3030259Scharnier 3130259Scharnier#include <float.h> // for DBL_MAX 3250479Speter 3330259Scharnier// use this for flags that are true per default in the tiered build 3430259Scharnier// but false in non-tiered builds, and vice versa 35286201Sbapt#ifdef TIERED 36286201Sbapt#define trueInTiered true 37286201Sbapt#define falseInTiered false 38319217Sasomers#else 3930259Scharnier#define trueInTiered false 40286201Sbapt#define falseInTiered true 4130259Scharnier#endif 42286982Sbapt 4320253Sjoerg#include CPU_HEADER(globals) 44286201Sbapt#include OS_HEADER(globals) 45286201Sbapt#include OS_CPU_HEADER(globals) 46286201Sbapt#ifdef COMPILER1 47286201Sbapt#include CPU_HEADER(c1_globals) 4830259Scharnier#include OS_HEADER(c1_globals) 49286201Sbapt#endif 50286201Sbapt#ifdef COMPILER2 5120253Sjoerg#include CPU_HEADER(c2_globals) 52286201Sbapt#include OS_HEADER(c2_globals) 53286201Sbapt#endif 5420253Sjoerg#ifdef SHARK 5520253Sjoerg#ifdef ZERO 56286201Sbapt# include "shark_globals_zero.hpp" 5720253Sjoerg#endif 5823318Sache#endif 5922394Sdavidn 6052512Sdavidn#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) && !INCLUDE_JVMCI 6124214Sachedefine_pd_global(bool, BackgroundCompilation, false); 62286196Sbaptdefine_pd_global(bool, UseTLAB, false); 63286196Sbaptdefine_pd_global(bool, CICompileOSR, false); 64286196Sbaptdefine_pd_global(bool, UseTypeProfile, false); 65286196Sbaptdefine_pd_global(bool, UseOnStackReplacement, false); 66286196Sbaptdefine_pd_global(bool, InlineIntrinsics, false); 67286196Sbaptdefine_pd_global(bool, PreferInterpreterNativeStubs, true); 68286196Sbaptdefine_pd_global(bool, ProfileInterpreter, false); 69286196Sbaptdefine_pd_global(bool, ProfileTraps, false); 70286196Sbaptdefine_pd_global(bool, TieredCompilation, false); 71286196Sbapt 72286196Sbaptdefine_pd_global(intx, CompileThreshold, 0); 73286196Sbapt 74286196Sbaptdefine_pd_global(intx, OnStackReplacePercentage, 0); 7520253Sjoergdefine_pd_global(bool, ResizeTLAB, false); 76286196Sbaptdefine_pd_global(intx, FreqInlineSize, 0); 77286196Sbaptdefine_pd_global(size_t, NewSizeThreadIncrease, 4*K); 78286196Sbaptdefine_pd_global(intx, InlineClassNatives, true); 79286196Sbaptdefine_pd_global(intx, InlineUnsafeOps, true); 80286196Sbaptdefine_pd_global(intx, InitialCodeCacheSize, 160*K); 81286196Sbaptdefine_pd_global(intx, ReservedCodeCacheSize, 32*M); 82286196Sbaptdefine_pd_global(intx, NonProfiledCodeHeapSize, 0); 83286196Sbaptdefine_pd_global(intx, ProfiledCodeHeapSize, 0); 84286196Sbaptdefine_pd_global(intx, NonNMethodCodeHeapSize, 32*M); 85286196Sbapt 86286196Sbaptdefine_pd_global(intx, CodeCacheExpansionSize, 32*K); 87286196Sbaptdefine_pd_global(intx, CodeCacheMinBlockLength, 1); 88286196Sbaptdefine_pd_global(intx, CodeCacheMinimumUseSpace, 200*K); 89283961Sbaptdefine_pd_global(size_t, MetaspaceSize, ScaleForWordSize(4*M)); 90286982Sbaptdefine_pd_global(bool, NeverActAsServerClassMachine, true); 91286982Sbaptdefine_pd_global(uint64_t,MaxRAM, 1ULL*G); 92286982Sbapt#define CI_COMPILER_COUNT 0 93286982Sbapt#else 94286982Sbapt 95286982Sbapt#if defined(COMPILER2) || INCLUDE_JVMCI 96286982Sbapt#define CI_COMPILER_COUNT 2 97286982Sbapt#else 98286982Sbapt#define CI_COMPILER_COUNT 1 99286982Sbapt#endif // COMPILER2 || INCLUDE_JVMCI 100286982Sbapt 101286982Sbapt#endif // no compilers 102286982Sbapt 103286982Sbapt// string type aliases used only in this file 104286982Sbapttypedef const char* ccstr; 105286982Sbapttypedef const char* ccstrlist; // represents string arguments which accumulate 106286982Sbapt 107286982Sbapt// function type that will construct default range string 108286982Sbapttypedef const char* (*RangeStrFunc)(void); 109286982Sbapt 110286982Sbaptstruct Flag { 111290153Sbdrewery enum Flags { 112290153Sbdrewery // latest value origin 113286982Sbapt DEFAULT = 0, 114290153Sbdrewery COMMAND_LINE = 1, 115286982Sbapt ENVIRON_VAR = 2, 116286982Sbapt CONFIG_FILE = 3, 117286982Sbapt MANAGEMENT = 4, 118286982Sbapt ERGONOMIC = 5, 119286982Sbapt ATTACH_ON_DEMAND = 6, 120286982Sbapt INTERNAL = 7, 121286982Sbapt 122286982Sbapt LAST_VALUE_ORIGIN = INTERNAL, 123286982Sbapt VALUE_ORIGIN_BITS = 4, 124286982Sbapt VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS), 125286982Sbapt 126286982Sbapt // flag kind 127286982Sbapt KIND_PRODUCT = 1 << 4, 128286982Sbapt KIND_MANAGEABLE = 1 << 5, 129286986Sbapt KIND_DIAGNOSTIC = 1 << 6, 130286982Sbapt KIND_EXPERIMENTAL = 1 << 7, 131286982Sbapt KIND_NOT_PRODUCT = 1 << 8, 132286982Sbapt KIND_DEVELOP = 1 << 9, 133286982Sbapt KIND_PLATFORM_DEPENDENT = 1 << 10, 134286982Sbapt KIND_READ_WRITE = 1 << 11, 135286982Sbapt KIND_C1 = 1 << 12, 136286982Sbapt KIND_C2 = 1 << 13, 137286982Sbapt KIND_ARCH = 1 << 14, 138286982Sbapt KIND_SHARK = 1 << 15, 139286982Sbapt KIND_LP64_PRODUCT = 1 << 16, 140286982Sbapt KIND_COMMERCIAL = 1 << 17, 141286982Sbapt KIND_JVMCI = 1 << 18, 142286982Sbapt 143286982Sbapt // set this bit if the flag was set on the command line 144286982Sbapt ORIG_COMMAND_LINE = 1 << 19, 145286982Sbapt 146286982Sbapt KIND_MASK = ~(VALUE_ORIGIN_MASK | ORIG_COMMAND_LINE) 147286982Sbapt }; 148286982Sbapt 149286982Sbapt enum Error { 150286982Sbapt // no error 151286982Sbapt SUCCESS = 0, 152286982Sbapt // flag name is missing 153286982Sbapt MISSING_NAME, 154286196Sbapt // flag value is missing 155286196Sbapt MISSING_VALUE, 156283961Sbapt // error parsing the textual form of the value 157285430Sbapt WRONG_FORMAT, 158283961Sbapt // flag is not writable 159286982Sbapt NON_WRITABLE, 160286982Sbapt // flag value is outside of its bounds 161286982Sbapt OUT_OF_BOUNDS, 162285430Sbapt // flag value violates its constraint 163285434Sbapt VIOLATES_CONSTRAINT, 164285434Sbapt // there is no flag with the given name 165285434Sbapt INVALID_FLAG, 166283961Sbapt // the flag can only be set only on command line during invocation of the VM 167283961Sbapt COMMAND_LINE_ONLY, 168286196Sbapt // the flag may only be set once 169285430Sbapt SET_ONLY_ONCE, 170286196Sbapt // the flag is not writable in this combination of product/debug build 171286196Sbapt CONSTANT, 172283961Sbapt // other, unspecified error related to setting the flag 173283961Sbapt ERR_OTHER 174285133Sbapt }; 175286196Sbapt 176285133Sbapt enum MsgType { 177285133Sbapt NONE = 0, 178285133Sbapt DIAGNOSTIC_FLAG_BUT_LOCKED, 179285133Sbapt EXPERIMENTAL_FLAG_BUT_LOCKED, 180285133Sbapt DEVELOPER_FLAG_BUT_PRODUCT_BUILD, 181285133Sbapt NOTPRODUCT_FLAG_BUT_PRODUCT_BUILD 182285133Sbapt }; 183286196Sbapt 184285133Sbapt const char* _type; 185285133Sbapt const char* _name; 186285133Sbapt void* _addr; 187285133Sbapt NOT_PRODUCT(const char* _doc;) 188285133Sbapt Flags _flags; 189285133Sbapt 190285133Sbapt // points to all Flags static array 191286196Sbapt static Flag* flags; 192286196Sbapt 193285133Sbapt // number of flags 194285133Sbapt static size_t numFlags; 195285137Sbapt 196285133Sbapt static Flag* find_flag(const char* name) { return find_flag(name, strlen(name), true, true); }; 197286196Sbapt static Flag* find_flag(const char* name, size_t length, bool allow_locked = false, bool return_flag = false); 198285133Sbapt static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false); 199285133Sbapt 200286196Sbapt static const char* get_int_default_range_str(); 201285133Sbapt static const char* get_uint_default_range_str(); 202285133Sbapt static const char* get_intx_default_range_str(); 203285133Sbapt static const char* get_uintx_default_range_str(); 204285133Sbapt static const char* get_uint64_t_default_range_str(); 205286196Sbapt static const char* get_size_t_default_range_str(); 206285133Sbapt static const char* get_double_default_range_str(); 207286196Sbapt 208285133Sbapt Flag::Error check_writable(bool changed); 209285133Sbapt 210285133Sbapt bool is_bool() const; 211285133Sbapt bool get_bool() const; 212285133Sbapt Flag::Error set_bool(bool value); 213285133Sbapt 214286196Sbapt bool is_int() const; 215285133Sbapt int get_int() const; 216285133Sbapt Flag::Error set_int(int value); 217285133Sbapt 218285133Sbapt bool is_uint() const; 219285133Sbapt uint get_uint() const; 220286196Sbapt Flag::Error set_uint(uint value); 221286196Sbapt 222285133Sbapt bool is_intx() const; 223285137Sbapt intx get_intx() const; 224286196Sbapt Flag::Error set_intx(intx value); 225285133Sbapt 226285133Sbapt bool is_uintx() const; 227285133Sbapt uintx get_uintx() const; 228285133Sbapt Flag::Error set_uintx(uintx value); 229285133Sbapt 230285133Sbapt bool is_uint64_t() const; 231285133Sbapt uint64_t get_uint64_t() const; 232285133Sbapt Flag::Error set_uint64_t(uint64_t value); 233285133Sbapt 234285133Sbapt bool is_size_t() const; 235285133Sbapt size_t get_size_t() const; 236285405Sbapt Flag::Error set_size_t(size_t value); 237286196Sbapt 238285405Sbapt bool is_double() const; 239285405Sbapt double get_double() const; 240286196Sbapt Flag::Error set_double(double value); 241285405Sbapt 242286196Sbapt bool is_ccstr() const; 243286196Sbapt bool ccstr_accumulates() const; 244286196Sbapt ccstr get_ccstr() const; 245286196Sbapt Flag::Error set_ccstr(ccstr value); 246285405Sbapt 247285405Sbapt Flags get_origin(); 248285405Sbapt void set_origin(Flags origin); 249285405Sbapt 250285405Sbapt bool is_default(); 251285405Sbapt bool is_ergonomic(); 252286196Sbapt bool is_command_line(); 253286196Sbapt void set_command_line(); 254285405Sbapt 255285405Sbapt bool is_product() const; 256285984Sbapt bool is_manageable() const; 257285405Sbapt bool is_diagnostic() const; 258285405Sbapt bool is_experimental() const; 259285405Sbapt bool is_notproduct() const; 260285405Sbapt bool is_develop() const; 261285405Sbapt bool is_read_write() const; 262285405Sbapt bool is_commercial() const; 263285405Sbapt 264285405Sbapt bool is_constant_in_binary() const; 265285405Sbapt 266285405Sbapt bool is_unlocker() const; 267285405Sbapt bool is_unlocked() const; 268285405Sbapt bool is_writeable() const; 269285405Sbapt bool is_external() const; 270285405Sbapt 271285405Sbapt bool is_unlocker_ext() const; 272286196Sbapt bool is_unlocked_ext() const; 273285405Sbapt bool is_writeable_ext() const; 274285405Sbapt bool is_external_ext() const; 275285405Sbapt 276286196Sbapt void unlock_diagnostic(); 277285405Sbapt 278291657Sbapt Flag::MsgType get_locked_message(char*, int) const; 279285405Sbapt void get_locked_message_ext(char*, int) const; 280286196Sbapt 281286196Sbapt // printRanges will print out flags type, name and range values as expected by -XX:+PrintFlagsRanges 282286196Sbapt void print_on(outputStream* st, bool withComments = false, bool printRanges = false); 283286196Sbapt void print_kind_and_origin(outputStream* st); 284285405Sbapt void print_as_flag(outputStream* st); 285285405Sbapt 286291657Sbapt static const char* flag_error_str(Flag::Error error); 287291657Sbapt}; 288291657Sbapt 289286196Sbapt// debug flags control various aspects of the VM and are global accessible 290291657Sbapt 291291657Sbapt// use FlagSetting to temporarily change some debug flag 292291657Sbapt// e.g. FlagSetting fs(DebugThisAndThat, true); 293291657Sbapt// restored to previous value upon leaving scope 294291657Sbaptclass FlagSetting { 295291657Sbapt bool val; 296285405Sbapt bool* flag; 297291657Sbapt public: 298291657Sbapt FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 299285405Sbapt ~FlagSetting() { *flag = val; } 300285405Sbapt}; 301285405Sbapt 302285405Sbapt 303285405Sbaptclass CounterSetting { 304285405Sbapt intx* counter; 305285405Sbapt public: 306285405Sbapt CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 307285405Sbapt ~CounterSetting() { (*counter)--; } 308285405Sbapt}; 309285405Sbapt 310285405Sbaptclass IntFlagSetting { 311285405Sbapt int val; 312285405Sbapt int* flag; 313285405Sbapt public: 314285405Sbapt IntFlagSetting(int& fl, int newValue) { flag = &fl; val = fl; fl = newValue; } 315285405Sbapt ~IntFlagSetting() { *flag = val; } 316285405Sbapt}; 317285405Sbapt 318285405Sbaptclass UIntFlagSetting { 319285405Sbapt uint val; 320285405Sbapt uint* flag; 321286196Sbapt public: 322285405Sbapt UIntFlagSetting(uint& fl, uint newValue) { flag = &fl; val = fl; fl = newValue; } 323285405Sbapt ~UIntFlagSetting() { *flag = val; } 324285405Sbapt}; 325285405Sbapt 326285405Sbaptclass UIntXFlagSetting { 327286196Sbapt uintx val; 328286196Sbapt uintx* flag; 32920253Sjoerg public: 330286196Sbapt UIntXFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; } 331286196Sbapt ~UIntXFlagSetting() { *flag = val; } 332286196Sbapt}; 33320253Sjoerg 33420267Sjoergclass DoubleFlagSetting { 335286196Sbapt double val; 33620253Sjoerg double* flag; 337286196Sbapt public: 338286196Sbapt DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 33920253Sjoerg ~DoubleFlagSetting() { *flag = val; } 340286196Sbapt}; 341286196Sbapt 342286196Sbaptclass SizeTFlagSetting { 343286196Sbapt size_t val; 34420253Sjoerg size_t* flag; 34521052Sdavidn public: 346286196Sbapt SizeTFlagSetting(size_t& fl, size_t newValue) { flag = &fl; val = fl; fl = newValue; } 347286196Sbapt ~SizeTFlagSetting() { *flag = val; } 348286196Sbapt}; 34921052Sdavidn 350286196Sbapt// Helper class for temporarily saving the value of a flag during a scope. 351286196Sbapttemplate <size_t SIZE> 352286196Sbaptclass FlagGuard { 353286196Sbapt unsigned char _value[SIZE]; 35421052Sdavidn void* const _addr; 355286196Sbapt 35621052Sdavidn // Hide operator new, this class should only be allocated on the stack. 35720253Sjoerg // NOTE: Cannot include memory/allocation.hpp here due to circular 358286196Sbapt // dependencies. 35920253Sjoerg void* operator new(size_t size) throw(); 360286196Sbapt void* operator new [](size_t size) throw(); 361286196Sbapt 362286196Sbapt public: 363286196Sbapt FlagGuard(void* flag_addr) : _addr(flag_addr) { 364286196Sbapt memcpy(_value, _addr, SIZE); 36552527Sdavidn } 36620253Sjoerg 367286196Sbapt ~FlagGuard() { 36820253Sjoerg memcpy(_addr, _value, SIZE); 369286196Sbapt } 370286196Sbapt}; 37120253Sjoerg 37220267Sjoerg#define FLAG_GUARD(f) FlagGuard<sizeof(f)> f ## _guard(&f) 373286196Sbapt 37420267Sjoergclass CommandLineFlags { 375286196Sbaptpublic: 376286196Sbapt static Flag::Error boolAt(const char* name, size_t len, bool* value, bool allow_locked = false, bool return_flag = false); 377286196Sbapt static Flag::Error boolAt(const char* name, bool* value, bool allow_locked = false, bool return_flag = false) { return boolAt(name, strlen(name), value, allow_locked, return_flag); } 378286196Sbapt static Flag::Error boolAtPut(Flag* flag, bool* value, Flag::Flags origin); 37920253Sjoerg static Flag::Error boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin); 38020253Sjoerg static Flag::Error boolAtPut(const char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); } 381286196Sbapt 382286196Sbapt static Flag::Error intAt(const char* name, size_t len, int* value, bool allow_locked = false, bool return_flag = false); 38320253Sjoerg static Flag::Error intAt(const char* name, int* value, bool allow_locked = false, bool return_flag = false) { return intAt(name, strlen(name), value, allow_locked, return_flag); } 38420253Sjoerg static Flag::Error intAtPut(Flag* flag, int* value, Flag::Flags origin); 38520253Sjoerg static Flag::Error intAtPut(const char* name, size_t len, int* value, Flag::Flags origin); 38620253Sjoerg static Flag::Error intAtPut(const char* name, int* value, Flag::Flags origin) { return intAtPut(name, strlen(name), value, origin); } 38720253Sjoerg 38820253Sjoerg static Flag::Error uintAt(const char* name, size_t len, uint* value, bool allow_locked = false, bool return_flag = false); 38920253Sjoerg static Flag::Error uintAt(const char* name, uint* value, bool allow_locked = false, bool return_flag = false) { return uintAt(name, strlen(name), value, allow_locked, return_flag); } 39044229Sdavidn static Flag::Error uintAtPut(Flag* flag, uint* value, Flag::Flags origin); 391286196Sbapt static Flag::Error uintAtPut(const char* name, size_t len, uint* value, Flag::Flags origin); 392286196Sbapt static Flag::Error uintAtPut(const char* name, uint* value, Flag::Flags origin) { return uintAtPut(name, strlen(name), value, origin); } 393286196Sbapt 394286196Sbapt static Flag::Error intxAt(const char* name, size_t len, intx* value, bool allow_locked = false, bool return_flag = false); 39520253Sjoerg static Flag::Error intxAt(const char* name, intx* value, bool allow_locked = false, bool return_flag = false) { return intxAt(name, strlen(name), value, allow_locked, return_flag); } 39620253Sjoerg static Flag::Error intxAtPut(Flag* flag, intx* value, Flag::Flags origin); 397262865Sjulian static Flag::Error intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin); 398262865Sjulian static Flag::Error intxAtPut(const char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); } 39920267Sjoerg 40020253Sjoerg static Flag::Error uintxAt(const char* name, size_t len, uintx* value, bool allow_locked = false, bool return_flag = false); 401286196Sbapt static Flag::Error uintxAt(const char* name, uintx* value, bool allow_locked = false, bool return_flag = false) { return uintxAt(name, strlen(name), value, allow_locked, return_flag); } 40220253Sjoerg static Flag::Error uintxAtPut(Flag* flag, uintx* value, Flag::Flags origin); 40320253Sjoerg static Flag::Error uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin); 40420253Sjoerg static Flag::Error uintxAtPut(const char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); } 40520253Sjoerg 40620253Sjoerg static Flag::Error size_tAt(const char* name, size_t len, size_t* value, bool allow_locked = false, bool return_flag = false); 40720253Sjoerg static Flag::Error size_tAt(const char* name, size_t* value, bool allow_locked = false, bool return_flag = false) { return size_tAt(name, strlen(name), value, allow_locked, return_flag); } 40820253Sjoerg static Flag::Error size_tAtPut(Flag* flag, size_t* value, Flag::Flags origin); 40920253Sjoerg static Flag::Error size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin); 41020253Sjoerg static Flag::Error size_tAtPut(const char* name, size_t* value, Flag::Flags origin) { return size_tAtPut(name, strlen(name), value, origin); } 41120253Sjoerg 412285414Sbapt static Flag::Error uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked = false, bool return_flag = false); 413285414Sbapt static Flag::Error uint64_tAt(const char* name, uint64_t* value, bool allow_locked = false, bool return_flag = false) { return uint64_tAt(name, strlen(name), value, allow_locked, return_flag); } 414286196Sbapt static Flag::Error uint64_tAtPut(Flag* flag, uint64_t* value, Flag::Flags origin); 415285395Sbapt static Flag::Error uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin); 416285395Sbapt static Flag::Error uint64_tAtPut(const char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 417286196Sbapt 418286196Sbapt static Flag::Error doubleAt(const char* name, size_t len, double* value, bool allow_locked = false, bool return_flag = false); 419286196Sbapt static Flag::Error doubleAt(const char* name, double* value, bool allow_locked = false, bool return_flag = false) { return doubleAt(name, strlen(name), value, allow_locked, return_flag); } 42044229Sdavidn static Flag::Error doubleAtPut(Flag* flag, double* value, Flag::Flags origin); 42120267Sjoerg static Flag::Error doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin); 42220267Sjoerg static Flag::Error doubleAtPut(const char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); } 42320253Sjoerg 42444229Sdavidn static Flag::Error ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked = false, bool return_flag = false); 425286196Sbapt static Flag::Error ccstrAt(const char* name, ccstr* value, bool allow_locked = false, bool return_flag = false) { return ccstrAt(name, strlen(name), value, allow_locked, return_flag); } 42620253Sjoerg // Contract: Flag will make private copy of the incoming value. 42720253Sjoerg // Outgoing value is always malloc-ed, and caller MUST call free. 428286196Sbapt static Flag::Error ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin); 429286196Sbapt static Flag::Error ccstrAtPut(const char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); } 43020253Sjoerg 431282699Sbapt // Returns false if name is not a command line flag. 43220253Sjoerg static bool wasSetOnCmdline(const char* name, bool* value); 433286196Sbapt static void printSetFlags(outputStream* out); 434286196Sbapt 43520253Sjoerg // printRanges will print out flags type, name and range values as expected by -XX:+PrintFlagsRanges 436282699Sbapt static void printFlags(outputStream* out, bool withComments, bool printRanges = false); 437282699Sbapt 438282699Sbapt static void verify() PRODUCT_RETURN; 439282699Sbapt}; 440282699Sbapt 44120253Sjoerg// use this for flags that are true by default in the debug version but 44220253Sjoerg// false in the optimized version, and vice versa 443286196Sbapt#ifdef ASSERT 44420253Sjoerg#define trueInDebug true 44520253Sjoerg#define falseInDebug false 44620253Sjoerg#else 44720253Sjoerg#define trueInDebug false 44820253Sjoerg#define falseInDebug true 44920253Sjoerg#endif 45020253Sjoerg 45120253Sjoerg// use this for flags that are true per default in the product build 45220253Sjoerg// but false in development builds, and vice versa 45320253Sjoerg#ifdef PRODUCT 45420253Sjoerg#define trueInProduct true 455130633Srobert#define falseInProduct false 45620253Sjoerg#else 45720253Sjoerg#define trueInProduct false 45820253Sjoerg#define falseInProduct true 45920253Sjoerg#endif 46020253Sjoerg 461282700Sbapt// develop flags are settable / visible only during development and are constant in the PRODUCT version 46220253Sjoerg// product flags are always settable / visible 46320253Sjoerg// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 46420253Sjoerg 46520253Sjoerg// A flag must be declared with one of the following types: 466282700Sbapt// bool, int, uint, intx, uintx, size_t, ccstr, double, or uint64_t. 46720253Sjoerg// The type "ccstr" is an alias for "const char*" and is used 46820253Sjoerg// only in this file, because the macrology requires single-token type names. 46920253Sjoerg 47020253Sjoerg// Note: Diagnostic options not meant for VM tuning or for product modes. 47120253Sjoerg// They are to be used for VM quality assurance or field diagnosis 47230259Scharnier// of VM bugs. They are hidden so that users will not be encouraged to 47330259Scharnier// try them as if they were VM ordinary execution options. However, they 47420253Sjoerg// are available in the product version of the VM. Under instruction 47520253Sjoerg// from support engineers, VM customers can turn them on to collect 47620253Sjoerg// diagnostic information about VM problems. To use a VM diagnostic 47720253Sjoerg// option, you must first specify +UnlockDiagnosticVMOptions. 478286196Sbapt// (This master switch also affects the behavior of -Xprintflags.) 479286196Sbapt// 48020253Sjoerg// experimental flags are in support of features that are not 48120253Sjoerg// part of the officially supported product, but are available 482286196Sbapt// for experimenting with. They could, for example, be performance 48320253Sjoerg// features that may not have undergone full or rigorous QA, but which may 48420253Sjoerg// help performance in some cases and released for experimentation 485179365Santoine// by the community of users and developers. This flag also allows one to 48620253Sjoerg// be able to build a fully supported product that nonetheless also 487179365Santoine// ships with some unsupported, lightly tested, experimental features. 488179365Santoine// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 489286196Sbapt// UnlockExperimentalVMOptions flag, which allows the control and 49020253Sjoerg// modification of the experimental flags. 49120253Sjoerg// 49220253Sjoerg// Nota bene: neither diagnostic nor experimental options should be used casually, 493179365Santoine// and they are not supported on production loads, except under explicit 494231994Skevlo// direction from support engineers. 49520253Sjoerg// 496319217Sasomers// manageable flags are writeable external product flags. 49720253Sjoerg// They are dynamically writeable through the JDK management interface 49820253Sjoerg// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 49920253Sjoerg// These flags are external exported interface (see CCC). The list of 50020253Sjoerg// manageable flags can be queried programmatically through the management 501179365Santoine// interface. 502181785Sache// 503179365Santoine// A flag can be made as "manageable" only if 50420253Sjoerg// - the flag is defined in a CCC as an external exported interface. 505231994Skevlo// - the VM implementation supports dynamic setting of the flag. 506231994Skevlo// This implies that the VM must *always* query the flag variable 507231994Skevlo// and not reuse state related to the flag state at any given time. 508319217Sasomers// - you want the flag to be queried programmatically by the customers. 509319217Sasomers// 510319217Sasomers// product_rw flags are writeable internal product flags. 51120253Sjoerg// They are like "manageable" flags but for internal/private use. 51220253Sjoerg// The list of product_rw flags are internal/private flags which 513286196Sbapt// may be changed/removed in a future release. It can be set 514286196Sbapt// through the management interface to get/set value 51520253Sjoerg// when the name of flag is supplied. 51620253Sjoerg// 51720253Sjoerg// A flag can be made as "product_rw" only if 51820253Sjoerg// - the VM implementation supports dynamic setting of the flag. 51920253Sjoerg// This implies that the VM must *always* query the flag variable 520326848Seugen// and not reuse state related to the flag state at any given time. 521326848Seugen// 522326848Seugen// Note that when there is a need to support develop flags to be writeable, 52373563Skris// it can be done in the same way as product_rw. 52420253Sjoerg// 525181785Sache// range is a macro that will expand to min and max arguments for range 52620253Sjoerg// checking code if provided - see commandLineFlagRangeList.hpp 52720253Sjoerg// 52820253Sjoerg// constraint is a macro that will expand to custom function call 52920253Sjoerg// for constraint checking if provided - see commandLineFlagConstraintList.hpp 53020253Sjoerg// 531286196Sbapt// writeable is a macro that controls if and how the value can change during the runtime 53261957Sache// 53320712Sdavidn// writeable(Always) is optional and allows the flag to have its value changed 53420253Sjoerg// without any limitations at any time 53520253Sjoerg// 53620253Sjoerg// writeable(Once) flag value's can be only set once during the lifetime of VM 53720253Sjoerg// 538326848Seugen// writeable(CommandLineOnly) flag value's can be only set from command line 539326848Seugen// (multiple times allowed) 540326848Seugen// 541326848Seugen 542326848Seugen 54320253Sjoerg#define RUNTIME_FLAGS(develop, \ 54420253Sjoerg develop_pd, \ 54520253Sjoerg product, \ 54620253Sjoerg product_pd, \ 54720253Sjoerg diagnostic, \ 54820253Sjoerg diagnostic_pd, \ 549284111Sbapt experimental, \ 550286196Sbapt notproduct, \ 551284111Sbapt manageable, \ 552286196Sbapt product_rw, \ 553286196Sbapt lp64_product, \ 554286196Sbapt range, \ 555286196Sbapt constraint, \ 556286196Sbapt writeable) \ 557286196Sbapt \ 558286196Sbapt lp64_product(bool, UseCompressedOops, false, \ 559286196Sbapt "Use 32-bit object references in 64-bit VM. " \ 560286196Sbapt "lp64_product means flag is always constant in 32 bit VM") \ 561286196Sbapt \ 562286196Sbapt lp64_product(bool, UseCompressedClassPointers, false, \ 563286196Sbapt "Use 32-bit class pointers in 64-bit VM. " \ 564286196Sbapt "lp64_product means flag is always constant in 32 bit VM") \ 565286196Sbapt \ 566286196Sbapt notproduct(bool, CheckCompressedOops, true, \ 567286196Sbapt "Generate checks in encoding/decoding code in debug VM") \ 568286196Sbapt \ 569286196Sbapt product(uintx, HeapSearchSteps, 3 PPC64_ONLY(+17), \ 570286196Sbapt "Heap allocation steps through preferred address regions to find" \ 571286196Sbapt " where it can allocate the heap. Number of steps to take per " \ 572286196Sbapt "region.") \ 573286196Sbapt range(1, max_uintx) \ 574286196Sbapt \ 575286196Sbapt lp64_product(intx, ObjectAlignmentInBytes, 8, \ 576286196Sbapt "Default object alignment in bytes, 8 is minimum") \ 577286196Sbapt range(8, 256) \ 578286196Sbapt constraint(ObjectAlignmentInBytesConstraintFunc,AtParse) \ 579286196Sbapt \ 580286196Sbapt product(bool, AssumeMP, false, \ 581286196Sbapt "Instruct the VM to assume multiple processors are available") \ 582286196Sbapt \ 583286196Sbapt /* UseMembar is theoretically a temp flag used for memory barrier */ \ 584286196Sbapt /* removal testing. It was supposed to be removed before FCS but has */ \ 585286196Sbapt /* been re-added (see 6401008) */ \ 586286196Sbapt product_pd(bool, UseMembar, \ 587286196Sbapt "(Unstable) Issues membars on thread state transitions") \ 588286196Sbapt \ 589286196Sbapt develop(bool, CleanChunkPoolAsync, true, \ 590286196Sbapt "Clean the chunk pool asynchronously") \ 591286196Sbapt \ 592286196Sbapt experimental(bool, AlwaysSafeConstructors, false, \ 593286196Sbapt "Force safe construction, as if all fields are final.") \ 594286196Sbapt \ 595286196Sbapt diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 596286196Sbapt "Enable normal processing of flags relating to field diagnostics")\ 597286196Sbapt \ 598286196Sbapt experimental(bool, UnlockExperimentalVMOptions, false, \ 599286196Sbapt "Enable normal processing of flags relating to experimental " \ 600286196Sbapt "features") \ 601286196Sbapt \ 602286196Sbapt product(bool, JavaMonitorsInStackTrace, true, \ 603286196Sbapt "Print information about Java monitor locks when the stacks are" \ 604286196Sbapt "dumped") \ 605286196Sbapt \ 606286196Sbapt product_pd(bool, UseLargePages, \ 607286196Sbapt "Use large page memory") \ 608286196Sbapt \ 609286196Sbapt product_pd(bool, UseLargePagesIndividualAllocation, \ 610286196Sbapt "Allocate large pages individually for better affinity") \ 611286196Sbapt \ 612286196Sbapt develop(bool, LargePagesIndividualAllocationInjectError, false, \ 613286196Sbapt "Fail large pages individual allocation") \ 614286196Sbapt \ 615286196Sbapt product(bool, UseLargePagesInMetaspace, false, \ 616286196Sbapt "Use large page memory in metaspace. " \ 617286196Sbapt "Only used if UseLargePages is enabled.") \ 618286196Sbapt \ 619286196Sbapt product(bool, UseNUMA, false, \ 620286196Sbapt "Use NUMA if available") \ 621286196Sbapt \ 622286196Sbapt product(bool, UseNUMAInterleaving, false, \ 623286196Sbapt "Interleave memory across NUMA nodes if available") \ 624286196Sbapt \ 625286196Sbapt product(size_t, NUMAInterleaveGranularity, 2*M, \ 626286196Sbapt "Granularity to use for NUMA interleaving on Windows OS") \ 627286196Sbapt range(os::vm_allocation_granularity(), NOT_LP64(2*G) LP64_ONLY(8192*G)) \ 628286196Sbapt \ 629286196Sbapt product(bool, ForceNUMA, false, \ 630286196Sbapt "Force NUMA optimizations on single-node/UMA systems") \ 631286196Sbapt \ 632286196Sbapt product(uintx, NUMAChunkResizeWeight, 20, \ 633286196Sbapt "Percentage (0-100) used to weight the current sample when " \ 634286196Sbapt "computing exponentially decaying average for " \ 635286196Sbapt "AdaptiveNUMAChunkSizing") \ 636286196Sbapt range(0, 100) \ 637286196Sbapt \ 638286196Sbapt product(size_t, NUMASpaceResizeRate, 1*G, \ 639286196Sbapt "Do not reallocate more than this amount per collection") \ 640286196Sbapt range(0, max_uintx) \ 641286196Sbapt \ 642286196Sbapt product(bool, UseAdaptiveNUMAChunkSizing, true, \ 643286196Sbapt "Enable adaptive chunk sizing for NUMA") \ 644286196Sbapt \ 645286196Sbapt product(bool, NUMAStats, false, \ 646286196Sbapt "Print NUMA stats in detailed heap information") \ 647291658Sbapt \ 648291658Sbapt product(uintx, NUMAPageScanRate, 256, \ 649286196Sbapt "Maximum number of pages to include in the page scan procedure") \ 650286196Sbapt range(0, max_uintx) \ 651286196Sbapt \ 652286196Sbapt product_pd(bool, NeedsDeoptSuspend, \ 653286196Sbapt "True for register window machines (sparc/ia64)") \ 654286196Sbapt \ 655286196Sbapt product(intx, UseSSE, 99, \ 656286196Sbapt "Highest supported SSE instructions set on x86/x64") \ 657286196Sbapt range(0, 99) \ 658286196Sbapt \ 659286196Sbapt product(bool, UseAES, false, \ 660286196Sbapt "Control whether AES instructions are used when available") \ 661286196Sbapt \ 662286196Sbapt product(bool, UseFMA, false, \ 663286196Sbapt "Control whether FMA instructions are used when available") \ 664286196Sbapt \ 665286196Sbapt product(bool, UseSHA, false, \ 666286196Sbapt "Control whether SHA instructions are used when available") \ 667286196Sbapt \ 668286196Sbapt diagnostic(bool, UseGHASHIntrinsics, false, \ 669286196Sbapt "Use intrinsics for GHASH versions of crypto") \ 670286196Sbapt \ 671286196Sbapt product(size_t, LargePageSizeInBytes, 0, \ 672286196Sbapt "Large page size (0 to let VM choose the page size)") \ 673286196Sbapt range(0, max_uintx) \ 674286196Sbapt \ 675286196Sbapt product(size_t, LargePageHeapSizeThreshold, 128*M, \ 676286196Sbapt "Use large pages if maximum heap is at least this big") \ 677286196Sbapt range(0, max_uintx) \ 678286196Sbapt \ 679286196Sbapt product(bool, ForceTimeHighResolution, false, \ 680286196Sbapt "Using high time resolution (for Win32 only)") \ 681286196Sbapt \ 682286196Sbapt develop(bool, TracePcPatching, false, \ 683286196Sbapt "Trace usage of frame::patch_pc") \ 684286196Sbapt \ 685286196Sbapt develop(bool, TraceRelocator, false, \ 686286196Sbapt "Trace the bytecode relocator") \ 687286196Sbapt \ 688286196Sbapt develop(bool, TraceLongCompiles, false, \ 689286196Sbapt "Print out every time compilation is longer than " \ 690286196Sbapt "a given threshold") \ 691286196Sbapt \ 692286196Sbapt develop(bool, SafepointALot, false, \ 693286196Sbapt "Generate a lot of safepoints. This works with " \ 694286196Sbapt "GuaranteedSafepointInterval") \ 695286196Sbapt \ 696286196Sbapt product_pd(bool, BackgroundCompilation, \ 697286196Sbapt "A thread requesting compilation is not blocked during " \ 698286196Sbapt "compilation") \ 699286196Sbapt \ 700286196Sbapt product(bool, PrintVMQWaitTime, false, \ 701286202Sbapt "Print out the waiting time in VM operation queue") \ 702286202Sbapt \ 703286196Sbapt develop(bool, TraceOopMapGeneration, false, \ 704286196Sbapt "Show OopMapGeneration") \ 705286196Sbapt \ 706286196Sbapt product(bool, MethodFlushing, true, \ 707286196Sbapt "Reclamation of zombie and not-entrant methods") \ 708286196Sbapt \ 709286196Sbapt develop(bool, VerifyStack, false, \ 710286196Sbapt "Verify stack of each thread when it is entering a runtime call") \ 711286196Sbapt \ 712286196Sbapt diagnostic(bool, ForceUnreachable, false, \ 713286196Sbapt "Make all non code cache addresses to be unreachable by " \ 714286196Sbapt "forcing use of 64bit literal fixups") \ 715286196Sbapt \ 716286196Sbapt notproduct(bool, StressDerivedPointers, false, \ 717286196Sbapt "Force scavenge when a derived pointer is detected on stack " \ 718286196Sbapt "after rtm call") \ 719286196Sbapt \ 720286196Sbapt develop(bool, TraceDerivedPointers, false, \ 721286196Sbapt "Trace traversal of derived pointers on stack") \ 722286196Sbapt \ 723286196Sbapt notproduct(bool, TraceCodeBlobStacks, false, \ 724286196Sbapt "Trace stack-walk of codeblobs") \ 725286196Sbapt \ 726286196Sbapt product(bool, PrintJNIResolving, false, \ 727286196Sbapt "Used to implement -v:jni") \ 728286196Sbapt \ 729286196Sbapt notproduct(bool, PrintRewrites, false, \ 730286196Sbapt "Print methods that are being rewritten") \ 731286196Sbapt \ 732286196Sbapt product(bool, UseInlineCaches, true, \ 733286196Sbapt "Use Inline Caches for virtual calls ") \ 734286196Sbapt \ 735286196Sbapt diagnostic(bool, InlineArrayCopy, true, \ 736286196Sbapt "Inline arraycopy native that is known to be part of " \ 737286196Sbapt "base library DLL") \ 738286196Sbapt \ 739286196Sbapt diagnostic(bool, InlineObjectHash, true, \ 740286196Sbapt "Inline Object::hashCode() native that is known to be part " \ 741286196Sbapt "of base library DLL") \ 742286196Sbapt \ 743286196Sbapt diagnostic(bool, InlineNatives, true, \ 744286196Sbapt "Inline natives that are known to be part of base library DLL") \ 745286196Sbapt \ 746286196Sbapt diagnostic(bool, InlineMathNatives, true, \ 747286196Sbapt "Inline SinD, CosD, etc.") \ 748286196Sbapt \ 749301367Sbapt diagnostic(bool, InlineClassNatives, true, \ 750286196Sbapt "Inline Class.isInstance, etc") \ 751286196Sbapt \ 752286196Sbapt diagnostic(bool, InlineThreadNatives, true, \ 753286196Sbapt "Inline Thread.currentThread, etc") \ 754286196Sbapt \ 755286217Sadrian diagnostic(bool, InlineUnsafeOps, true, \ 756286196Sbapt "Inline memory ops (native methods) from Unsafe") \ 757286196Sbapt \ 758286196Sbapt product(bool, CriticalJNINatives, true, \ 759286196Sbapt "Check for critical JNI entry points") \ 760286196Sbapt \ 761286196Sbapt notproduct(bool, StressCriticalJNINatives, false, \ 762286196Sbapt "Exercise register saving code in critical natives") \ 763286196Sbapt \ 764286196Sbapt diagnostic(bool, UseAESIntrinsics, false, \ 765286196Sbapt "Use intrinsics for AES versions of crypto") \ 766286196Sbapt \ 767286196Sbapt diagnostic(bool, UseAESCTRIntrinsics, false, \ 768286196Sbapt "Use intrinsics for the paralleled version of AES/CTR crypto") \ 769286196Sbapt \ 770286196Sbapt diagnostic(bool, UseSHA1Intrinsics, false, \ 771286196Sbapt "Use intrinsics for SHA-1 crypto hash function. " \ 772286196Sbapt "Requires that UseSHA is enabled.") \ 773286196Sbapt \ 774286196Sbapt diagnostic(bool, UseSHA256Intrinsics, false, \ 775286196Sbapt "Use intrinsics for SHA-224 and SHA-256 crypto hash functions. " \ 776285401Sbapt "Requires that UseSHA is enabled.") \ 777286196Sbapt \ 778286218Sbapt diagnostic(bool, UseSHA512Intrinsics, false, \ 779286196Sbapt "Use intrinsics for SHA-384 and SHA-512 crypto hash functions. " \ 780286196Sbapt "Requires that UseSHA is enabled.") \ 781286196Sbapt \ 782286196Sbapt diagnostic(bool, UseCRC32Intrinsics, false, \ 783286196Sbapt "use intrinsics for java.util.zip.CRC32") \ 784286196Sbapt \ 78520253Sjoerg diagnostic(bool, UseCRC32CIntrinsics, false, \ 786286196Sbapt "use intrinsics for java.util.zip.CRC32C") \ 787286259Sed \ 788286196Sbapt diagnostic(bool, UseAdler32Intrinsics, false, \ 789286196Sbapt "use intrinsics for java.util.zip.Adler32") \ 790286196Sbapt \ 791286196Sbapt diagnostic(bool, UseVectorizedMismatchIntrinsic, false, \ 792286196Sbapt "Enables intrinsification of ArraysSupport.vectorizedMismatch()") \ 793286196Sbapt \ 794286196Sbapt diagnostic(ccstrlist, DisableIntrinsic, "", \ 795286196Sbapt "do not expand intrinsics whose (internal) names appear here") \ 796286196Sbapt \ 797286196Sbapt develop(bool, TraceCallFixup, false, \ 798286196Sbapt "Trace all call fixups") \ 799286196Sbapt \ 800286196Sbapt develop(bool, DeoptimizeALot, false, \ 801286196Sbapt "Deoptimize at every exit from the runtime system") \ 802286196Sbapt \ 803286196Sbapt notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 804286196Sbapt "A comma separated list of bcis to deoptimize at") \ 805286196Sbapt \ 806286196Sbapt product(bool, DeoptimizeRandom, false, \ 807286196Sbapt "Deoptimize random frames on random exit from the runtime system")\ 808286196Sbapt \ 809286196Sbapt notproduct(bool, ZombieALot, false, \ 810286196Sbapt "Create zombies (non-entrant) at exit from the runtime system") \ 811286196Sbapt \ 812286196Sbapt product(bool, UnlinkSymbolsALot, false, \ 813286196Sbapt "Unlink unreferenced symbols from the symbol table at safepoints")\ 814286196Sbapt \ 815286196Sbapt notproduct(bool, WalkStackALot, false, \ 816287799Sbapt "Trace stack (no print) at every exit from the runtime system") \ 817286196Sbapt \ 818286196Sbapt product(bool, Debugging, false, \ 819286196Sbapt "Set when executing debug methods in debug.cpp " \ 820286196Sbapt "(to prevent triggering assertions)") \ 821286196Sbapt \ 822286196Sbapt notproduct(bool, StrictSafepointChecks, trueInDebug, \ 823286196Sbapt "Enable strict checks that safepoints cannot happen for threads " \ 824286196Sbapt "that use NoSafepointVerifier") \ 825286196Sbapt \ 826286196Sbapt notproduct(bool, VerifyLastFrame, false, \ 827286196Sbapt "Verify oops on last frame on entry to VM") \ 828286196Sbapt \ 829286196Sbapt product(bool, FailOverToOldVerifier, true, \ 830286196Sbapt "Fail over to old verifier when split verifier fails") \ 831286196Sbapt \ 832286196Sbapt develop(bool, ShowSafepointMsgs, false, \ 833285401Sbapt "Show message about safepoint synchronization") \ 834285401Sbapt \ 835285401Sbapt product(bool, SafepointTimeout, false, \ 836285401Sbapt "Time out and warn or fail after SafepointTimeoutDelay " \ 837285401Sbapt "milliseconds if failed to reach safepoint") \ 838286196Sbapt \ 839286196Sbapt develop(bool, DieOnSafepointTimeout, false, \ 840286196Sbapt "Die upon failure to reach safepoint (see SafepointTimeout)") \ 841286196Sbapt \ 842286196Sbapt /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 843286196Sbapt /* typically, at most a few retries are needed */ \ 844286196Sbapt product(intx, SuspendRetryCount, 50, \ 845286196Sbapt "Maximum retry count for an external suspend request") \ 846286196Sbapt range(0, max_intx) \ 847286196Sbapt \ 848286196Sbapt product(intx, SuspendRetryDelay, 5, \ 849286196Sbapt "Milliseconds to delay per retry (* current_retry_count)") \ 850286196Sbapt range(0, max_intx) \ 851286196Sbapt \ 852286196Sbapt product(bool, AssertOnSuspendWaitFailure, false, \ 853286196Sbapt "Assert/Guarantee on external suspend wait failure") \ 854286196Sbapt \ 855286196Sbapt product(bool, TraceSuspendWaitFailures, false, \ 856286196Sbapt "Trace external suspend wait failures") \ 857286196Sbapt \ 858286196Sbapt product(bool, MaxFDLimit, true, \ 859286196Sbapt "Bump the number of file descriptors to maximum in Solaris") \ 860286196Sbapt \ 861286196Sbapt diagnostic(bool, LogEvents, true, \ 862286196Sbapt "Enable the various ring buffer event logs") \ 863286196Sbapt \ 864286218Sbapt diagnostic(uintx, LogEventsBufferEntries, 10, \ 865286196Sbapt "Number of ring buffer event logs") \ 866286196Sbapt range(1, NOT_LP64(1*K) LP64_ONLY(1*M)) \ 867286196Sbapt \ 868286196Sbapt product(bool, BytecodeVerificationRemote, true, \ 869286196Sbapt "Enable the Java bytecode verifier for remote classes") \ 870286196Sbapt \ 871286259Sed product(bool, BytecodeVerificationLocal, false, \ 872286196Sbapt "Enable the Java bytecode verifier for local classes") \ 873286196Sbapt \ 874286196Sbapt develop(bool, ForceFloatExceptions, trueInDebug, \ 875286196Sbapt "Force exceptions on FP stack under/overflow") \ 876286196Sbapt \ 877286196Sbapt develop(bool, VerifyStackAtCalls, false, \ 878286196Sbapt "Verify that the stack pointer is unchanged after calls") \ 879286196Sbapt \ 880286196Sbapt develop(bool, TraceJavaAssertions, false, \ 881286196Sbapt "Trace java language assertions") \ 882286196Sbapt \ 883286196Sbapt notproduct(bool, CheckAssertionStatusDirectives, false, \ 884286196Sbapt "Temporary - see javaClasses.cpp") \ 885286196Sbapt \ 886286196Sbapt notproduct(bool, PrintMallocFree, false, \ 887286196Sbapt "Trace calls to C heap malloc/free allocation") \ 888286196Sbapt \ 889286196Sbapt notproduct(bool, VerifyCodeCache, false, \ 890286196Sbapt "Verify code cache on memory allocation/deallocation") \ 891286196Sbapt \ 892286196Sbapt develop(bool, UseMallocOnly, false, \ 893286196Sbapt "Use only malloc/free for allocation (no resource area/arena)") \ 894286196Sbapt \ 895286196Sbapt develop(bool, PrintMalloc, false, \ 896286196Sbapt "Print all malloc/free calls") \ 897286196Sbapt \ 898286196Sbapt develop(bool, PrintMallocStatistics, false, \ 899286196Sbapt "Print malloc/free statistics") \ 900286196Sbapt \ 901286196Sbapt develop(bool, ZapResourceArea, trueInDebug, \ 902286196Sbapt "Zap freed resource/arena space with 0xABABABAB") \ 903286196Sbapt \ 904286196Sbapt notproduct(bool, ZapVMHandleArea, trueInDebug, \ 905286196Sbapt "Zap freed VM handle space with 0xBCBCBCBC") \ 906286196Sbapt \ 907286196Sbapt develop(bool, ZapJNIHandleArea, trueInDebug, \ 908286196Sbapt "Zap freed JNI handle space with 0xFEFEFEFE") \ 909286196Sbapt \ 910286196Sbapt notproduct(bool, ZapStackSegments, trueInDebug, \ 911286196Sbapt "Zap allocated/freed stack segments with 0xFADFADED") \ 912286196Sbapt \ 913286196Sbapt develop(bool, ZapUnusedHeapArea, trueInDebug, \ 914286196Sbapt "Zap unused heap space with 0xBAADBABE") \ 915286196Sbapt \ 916285401Sbapt develop(bool, CheckZapUnusedHeapArea, false, \ 917286196Sbapt "Check zapping of unused heap space") \ 918285401Sbapt \ 919285401Sbapt develop(bool, ZapFillerObjects, trueInDebug, \ 920285989Sbapt "Zap filler objects with 0xDEAFBABE") \ 921285989Sbapt \ 922286196Sbapt develop(bool, PrintVMMessages, true, \ 923286196Sbapt "Print VM messages on console") \ 924286196Sbapt \ 925286196Sbapt notproduct(uintx, ErrorHandlerTest, 0, \ 926286196Sbapt "If > 0, provokes an error after VM initialization; the value " \ 927286196Sbapt "determines which error to provoke. See test_error_handler() " \ 928286196Sbapt "in debug.cpp.") \ 929286196Sbapt \ 930286196Sbapt notproduct(uintx, TestCrashInErrorHandler, 0, \ 931286196Sbapt "If > 0, provokes an error inside VM error handler (a secondary " \ 932285989Sbapt "crash). see test_error_handler() in debug.cpp.") \ 933286196Sbapt \ 934285401Sbapt notproduct(bool, TestSafeFetchInErrorHandler, false, \ 935285401Sbapt "If true, tests SafeFetch inside error handler.") \ 936285401Sbapt \ 937284111Sbapt develop(bool, Verbose, false, \ 938284111Sbapt "Print additional debugging information from other modes") \ 939284111Sbapt \ 940286196Sbapt develop(bool, PrintMiscellaneous, false, \ 941285433Sbapt "Print uncategorized debugging information (requires +Verbose)") \ 942284111Sbapt \ 943284111Sbapt develop(bool, WizardMode, false, \ 944285433Sbapt "Print much more debugging information") \ 945285433Sbapt \ 946284111Sbapt product(bool, ShowMessageBoxOnError, false, \ 947284111Sbapt "Keep process alive on VM fatal error") \ 948286202Sbapt \ 949286202Sbapt product(bool, CreateCoredumpOnCrash, true, \ 950284111Sbapt "Create core/mini dump on VM fatal error") \ 951284111Sbapt \ 952284111Sbapt product(uint64_t, ErrorLogTimeout, 2 * 60, \ 953286196Sbapt "Timeout, in seconds, to limit the time spent on writing an " \ 954284111Sbapt "error log in case of a crash.") \ 955284111Sbapt range(0, (uint64_t)max_jlong/1000) \ 956284111Sbapt \ 957284111Sbapt product_pd(bool, UseOSErrorReporting, \ 958284111Sbapt "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 959284111Sbapt \ 960284111Sbapt product(bool, SuppressFatalErrorMessage, false, \ 961284111Sbapt "Report NO fatal error message (avoid deadlock)") \ 962284111Sbapt \ 963284111Sbapt product(ccstrlist, OnError, "", \ 964284111Sbapt "Run user-defined commands on fatal error; see VMError.cpp " \ 965284111Sbapt "for examples") \ 966284111Sbapt \ 967284111Sbapt product(ccstrlist, OnOutOfMemoryError, "", \ 968284111Sbapt "Run user-defined commands on first java.lang.OutOfMemoryError") \ 969284111Sbapt \ 970284111Sbapt manageable(bool, HeapDumpBeforeFullGC, false, \ 971284111Sbapt "Dump heap to file before any major stop-the-world GC") \ 972286196Sbapt \ 973286196Sbapt manageable(bool, HeapDumpAfterFullGC, false, \ 974284111Sbapt "Dump heap to file after any major stop-the-world GC") \ 975285401Sbapt \ 976285401Sbapt manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 977284111Sbapt "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 978284111Sbapt \ 979284111Sbapt manageable(ccstr, HeapDumpPath, NULL, \ 980284111Sbapt "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \ 981284128Sbapt "directory) of the dump file (defaults to java_pid<pid>.hprof " \ 982284111Sbapt "in the working directory)") \ 983284111Sbapt \ 984284128Sbapt develop(bool, BreakAtWarning, false, \ 985284128Sbapt "Execute breakpoint upon encountering VM warning") \ 986284111Sbapt \ 987284111Sbapt develop(bool, UseFakeTimers, false, \ 988284111Sbapt "Tell whether the VM should use system time or a fake timer") \ 989284111Sbapt \ 990284113Sbapt product(ccstr, NativeMemoryTracking, "off", \ 991284113Sbapt "Native memory tracking options") \ 992284113Sbapt \ 993284113Sbapt diagnostic(bool, PrintNMTStatistics, false, \ 994284128Sbapt "Print native memory tracking summary data if it is on") \ 995284113Sbapt \ 996284113Sbapt diagnostic(bool, LogCompilation, false, \ 997284113Sbapt "Log compilation activity in detail to LogFile") \ 998284113Sbapt \ 999284113Sbapt product(bool, PrintCompilation, false, \ 1000284113Sbapt "Print compilations") \ 1001284111Sbapt \ 1002284111Sbapt diagnostic(bool, TraceNMethodInstalls, false, \ 1003284111Sbapt "Trace nmethod installation") \ 1004284111Sbapt \ 1005286196Sbapt diagnostic(intx, ScavengeRootsInCode, 2, \ 1006286196Sbapt "0: do not allow scavengable oops in the code cache; " \ 1007284111Sbapt "1: allow scavenging from the code cache; " \ 1008285433Sbapt "2: emit as many constants as the compiler can see") \ 1009285433Sbapt range(0, 2) \ 1010285433Sbapt \ 1011284111Sbapt product(bool, AlwaysRestoreFPU, false, \ 1012286196Sbapt "Restore the FPU control word after every JNI call (expensive)") \ 1013286196Sbapt \ 1014286196Sbapt diagnostic(bool, PrintCompilation2, false, \ 1015284111Sbapt "Print additional statistics per compilation") \ 1016285433Sbapt \ 1017286196Sbapt diagnostic(bool, PrintAdapterHandlers, false, \ 1018286196Sbapt "Print code generated for i2c/c2i adapters") \ 1019285433Sbapt \ 1020286196Sbapt diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 1021286196Sbapt "Verify that i2c/c2i adapters are called properly") \ 1022286196Sbapt \ 1023285433Sbapt develop(bool, VerifyAdapterSharing, false, \ 1024285433Sbapt "Verify that the code for shared adapters is the equivalent") \ 1025284111Sbapt \ 1026284111Sbapt diagnostic(bool, PrintAssembly, false, \ 1027284111Sbapt "Print assembly code (using external disassembler.so)") \ 1028284111Sbapt \ 1029284111Sbapt diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 1030286196Sbapt "Print options string passed to disassembler.so") \ 1031286196Sbapt \ 103220253Sjoerg notproduct(bool, PrintNMethodStatistics, false, \ 1033286196Sbapt "Print a summary statistic for the generated nmethods") \ 103420253Sjoerg \ 1035286196Sbapt diagnostic(bool, PrintNMethods, false, \ 1036286196Sbapt "Print assembly code for nmethods when generated") \ 1037286196Sbapt \ 1038286196Sbapt diagnostic(bool, PrintNativeNMethods, false, \ 1039286196Sbapt "Print assembly code for native nmethods when generated") \ 1040286196Sbapt \ 104120253Sjoerg develop(bool, PrintDebugInfo, false, \ 1042286196Sbapt "Print debug information for all nmethods when generated") \ 104320253Sjoerg \ 1044286196Sbapt develop(bool, PrintRelocations, false, \ 1045286196Sbapt "Print relocation information for all nmethods when generated") \ 1046286196Sbapt \ 1047286196Sbapt develop(bool, PrintDependencies, false, \ 1048286196Sbapt "Print dependency information for all nmethods when generated") \ 1049286196Sbapt \ 1050286196Sbapt develop(bool, PrintExceptionHandlers, false, \ 1051286196Sbapt "Print exception handler tables for all nmethods when generated") \ 1052286196Sbapt \ 1053286196Sbapt develop(bool, StressCompiledExceptionHandlers, false, \ 1054286196Sbapt "Exercise compiled exception handlers") \ 1055286196Sbapt \ 1056286196Sbapt develop(bool, InterceptOSException, false, \ 1057286196Sbapt "Start debugger when an implicit OS (e.g. NULL) " \ 105820253Sjoerg "exception happens") \ 105920253Sjoerg \ 1060286196Sbapt product(bool, PrintCodeCache, false, \ 1061286196Sbapt "Print the code cache memory usage when exiting") \ 106220253Sjoerg \ 106320253Sjoerg develop(bool, PrintCodeCache2, false, \ 1064286196Sbapt "Print detailed usage information on the code cache when exiting")\ 1065286196Sbapt \ 106620253Sjoerg product(bool, PrintCodeCacheOnCompilation, false, \ 1067286196Sbapt "Print the code cache memory usage each time a method is " \ 1068286196Sbapt "compiled") \ 1069286196Sbapt \ 107020253Sjoerg diagnostic(bool, PrintStubCode, false, \ 1071286196Sbapt "Print generated stub code") \ 1072286196Sbapt \ 1073286196Sbapt product(bool, StackTraceInThrowable, true, \ 1074286196Sbapt "Collect backtrace in throwable when exception happens") \ 1075286196Sbapt \ 1076286196Sbapt product(bool, OmitStackTraceInFastThrow, true, \ 1077286196Sbapt "Omit backtraces for some 'hot' exceptions in optimized code") \ 107820253Sjoerg \ 1079286196Sbapt product(bool, ProfilerPrintByteCodeStatistics, false, \ 1080286196Sbapt "Print bytecode statistics when dumping profiler output") \ 1081286196Sbapt \ 1082286196Sbapt product(bool, ProfilerRecordPC, false, \ 1083286196Sbapt "Collect ticks for each 16 byte interval of compiled code") \ 1084286196Sbapt \ 1085286196Sbapt product(bool, ProfileVM, false, \ 1086286196Sbapt "Profile ticks that fall within VM (either in the VM Thread " \ 1087286196Sbapt "or VM code called through stubs)") \ 1088286196Sbapt \ 1089286196Sbapt product(bool, ProfileIntervals, false, \ 1090322919Semaste "Print profiles for each interval (see ProfileIntervalsTicks)") \ 1091322919Semaste \ 1092286196Sbapt notproduct(bool, ProfilerCheckIntervals, false, \ 1093286196Sbapt "Collect and print information on spacing of profiler ticks") \ 1094286196Sbapt \ 1095286196Sbapt product(bool, PrintWarnings, true, \ 1096286196Sbapt "Print JVM warnings to output stream") \ 1097286196Sbapt \ 1098286196Sbapt notproduct(uintx, WarnOnStalledSpinLock, 0, \ 1099286196Sbapt "Print warnings for stalled SpinLocks") \ 1100286196Sbapt \ 1101286196Sbapt product(bool, RegisterFinalizersAtInit, true, \ 1102286196Sbapt "Register finalizable objects at end of Object.<init> or " \ 1103286196Sbapt "after allocation") \ 1104286196Sbapt \ 1105286196Sbapt develop(bool, RegisterReferences, true, \ 1106286196Sbapt "Tell whether the VM should register soft/weak/final/phantom " \ 1107286196Sbapt "references") \ 1108286196Sbapt \ 1109286196Sbapt develop(bool, IgnoreRewrites, false, \ 1110286196Sbapt "Suppress rewrites of bytecodes in the oopmap generator. " \ 1111286196Sbapt "This is unsafe!") \ 1112286196Sbapt \ 1113286196Sbapt develop(bool, PrintCodeCacheExtension, false, \ 1114286196Sbapt "Print extension of code cache") \ 1115286196Sbapt \ 1116286196Sbapt develop(bool, UsePrivilegedStack, true, \ 1117286196Sbapt "Enable the security JVM functions") \ 1118286196Sbapt \ 1119286196Sbapt develop(bool, ProtectionDomainVerification, true, \ 1120286196Sbapt "Verify protection domain before resolution in system dictionary")\ 1121286196Sbapt \ 1122286196Sbapt product(bool, ClassUnloading, true, \ 1123286196Sbapt "Do unloading of classes") \ 1124286196Sbapt \ 1125326848Seugen product(bool, ClassUnloadingWithConcurrentMark, true, \ 1126326848Seugen "Do unloading of classes with a concurrent marking cycle") \ 1127326848Seugen \ 1128326848Seugen develop(bool, DisableStartThread, false, \ 1129326848Seugen "Disable starting of additional Java threads " \ 1130326848Seugen "(for debugging only)") \ 1131326848Seugen \ 1132326848Seugen develop(bool, MemProfiling, false, \ 1133326848Seugen "Write memory usage profiling to log file") \ 1134286196Sbapt \ 1135286196Sbapt notproduct(bool, PrintSystemDictionaryAtExit, false, \ 1136286196Sbapt "Print the system dictionary at exit") \ 1137286196Sbapt \ 1138326848Seugen experimental(intx, PredictedLoadedClassCount, 0, \ 1139286196Sbapt "Experimental: Tune loaded class cache starting size") \ 1140286196Sbapt \ 1141286196Sbapt diagnostic(bool, UnsyncloadClass, false, \ 1142286196Sbapt "Unstable: VM calls loadClass unsynchronized. Custom " \ 1143286196Sbapt "class loader must call VM synchronized for findClass " \ 1144286196Sbapt "and defineClass.") \ 1145286196Sbapt \ 1146286196Sbapt product(bool, AlwaysLockClassLoader, false, \ 1147286196Sbapt "Require the VM to acquire the class loader lock before calling " \ 1148286196Sbapt "loadClass() even for class loaders registering " \ 1149286196Sbapt "as parallel capable") \ 1150286196Sbapt \ 1151286196Sbapt product(bool, AllowParallelDefineClass, false, \ 1152286196Sbapt "Allow parallel defineClass requests for class loaders " \ 1153286196Sbapt "registering as parallel capable") \ 1154286196Sbapt \ 1155286196Sbapt product(bool, MustCallLoadClassInternal, false, \ 1156286196Sbapt "Call loadClassInternal() rather than loadClass()") \ 1157286196Sbapt \ 1158286196Sbapt product_pd(bool, DontYieldALot, \ 1159286196Sbapt "Throw away obvious excess yield calls") \ 1160286196Sbapt \ 1161286196Sbapt product(bool, ConvertSleepToYield, true, \ 1162286196Sbapt "Convert sleep(0) to thread yield ") \ 1163286196Sbapt \ 1164286196Sbapt product(bool, ConvertYieldToSleep, false, \ 1165286196Sbapt "Convert yield to a sleep of MinSleepInterval to simulate Win32 " \ 1166286196Sbapt "behavior") \ 1167286196Sbapt \ 1168286196Sbapt develop(bool, UseDetachedThreads, true, \ 1169286196Sbapt "Use detached threads that are recycled upon termination " \ 1170286196Sbapt "(for Solaris only)") \ 1171286196Sbapt \ 1172286196Sbapt product(bool, UseLWPSynchronization, true, \ 1173286196Sbapt "Use LWP-based instead of libthread-based synchronization " \ 1174286196Sbapt "(SPARC only)") \ 1175286196Sbapt \ 1176326848Seugen experimental(ccstr, SyncKnobs, NULL, \ 1177286196Sbapt "(Unstable) Various monitor synchronization tunables") \ 1178326848Seugen \ 1179286196Sbapt experimental(intx, EmitSync, 0, \ 1180286196Sbapt "(Unsafe, Unstable) " \ 1181286196Sbapt "Control emission of inline sync fast-path code") \ 1182286196Sbapt \ 1183286196Sbapt product(intx, MonitorBound, 0, "Bound Monitor population") \ 1184286196Sbapt range(0, max_jint) \ 1185286196Sbapt \ 1186286196Sbapt product(bool, MonitorInUseLists, true, "Track Monitors for Deflation") \ 1187286196Sbapt \ 1188286196Sbapt experimental(intx, SyncFlags, 0, "(Unsafe, Unstable) " \ 1189286196Sbapt "Experimental Sync flags") \ 1190286196Sbapt \ 1191286196Sbapt experimental(intx, SyncVerbose, 0, "(Unstable)") \ 1192286196Sbapt \ 1193316347Sbapt diagnostic(bool, InlineNotify, true, "intrinsify subset of notify") \ 1194286196Sbapt \ 1195286196Sbapt experimental(intx, ClearFPUAtPark, 0, "(Unsafe, Unstable)") \ 1196286196Sbapt \ 1197286196Sbapt experimental(intx, hashCode, 5, \ 1198286196Sbapt "(Unstable) select hashCode generation algorithm") \ 1199286196Sbapt \ 1200286196Sbapt product(bool, FilterSpuriousWakeups, true, \ 1201286196Sbapt "When true prevents OS-level spurious, or premature, wakeups " \ 1202286196Sbapt "from Object.wait (Ignored for Windows)") \ 1203286196Sbapt \ 1204286196Sbapt experimental(intx, NativeMonitorTimeout, -1, "(Unstable)") \ 1205286196Sbapt \ 1206286196Sbapt experimental(intx, NativeMonitorFlags, 0, "(Unstable)") \ 1207286196Sbapt \ 1208286196Sbapt experimental(intx, NativeMonitorSpinLimit, 20, "(Unstable)") \ 1209286196Sbapt \ 1210326848Seugen develop(bool, UsePthreads, false, \ 1211326848Seugen "Use pthread-based instead of libthread-based synchronization " \ 1212326848Seugen "(SPARC only)") \ 1213286196Sbapt \ 1214286259Sed product(bool, ReduceSignalUsage, false, \ 1215286196Sbapt "Reduce the use of OS signals in Java and/or the VM") \ 1216286196Sbapt \ 1217323009Semaste develop_pd(bool, ShareVtableStubs, \ 1218286196Sbapt "Share vtable stubs (smaller code but worse branch prediction") \ 1219286196Sbapt \ 1220286196Sbapt develop(bool, LoadLineNumberTables, true, \ 1221286196Sbapt "Tell whether the class file parser loads line number tables") \ 1222286196Sbapt \ 1223286196Sbapt develop(bool, LoadLocalVariableTables, true, \ 1224286196Sbapt "Tell whether the class file parser loads local variable tables") \ 1225286196Sbapt \ 1226286196Sbapt develop(bool, LoadLocalVariableTypeTables, true, \ 1227286196Sbapt "Tell whether the class file parser loads local variable type" \ 1228286196Sbapt "tables") \ 1229323009Semaste \ 1230286196Sbapt product(bool, AllowUserSignalHandlers, false, \ 1231286196Sbapt "Do not complain if the application installs signal handlers " \ 1232286196Sbapt "(Solaris & Linux only)") \ 1233286196Sbapt \ 1234286196Sbapt product(bool, UseSignalChaining, true, \ 1235286196Sbapt "Use signal-chaining to invoke signal handlers installed " \ 1236286196Sbapt "by the application (Solaris & Linux only)") \ 1237286196Sbapt \ 1238286196Sbapt product(bool, AllowJNIEnvProxy, false, \ 1239286196Sbapt "Allow JNIEnv proxies for jdbx") \ 1240286196Sbapt \ 1241326848Seugen product(bool, RestoreMXCSROnJNICalls, false, \ 1242326848Seugen "Restore MXCSR when returning from JNI calls") \ 1243326848Seugen \ 1244326848Seugen product(bool, CheckJNICalls, false, \ 1245286196Sbapt "Verify all arguments to JNI calls") \ 1246286196Sbapt \ 1247326848Seugen product(bool, CheckEndorsedAndExtDirs, false, \ 1248326848Seugen "Verify the endorsed and extension directories are not used") \ 1249326848Seugen \ 1250326848Seugen product(bool, UseFastJNIAccessors, true, \ 1251286196Sbapt "Use optimized versions of Get<Primitive>Field") \ 1252286196Sbapt \ 1253286196Sbapt product(intx, MaxJNILocalCapacity, 65536, \ 1254286196Sbapt "Maximum allowable local JNI handle capacity to " \ 1255286196Sbapt "EnsureLocalCapacity() and PushLocalFrame(), " \ 1256286196Sbapt "where <= 0 is unlimited, default: 65536") \ 1257286196Sbapt range(min_intx, max_intx) \ 1258286196Sbapt \ 1259286196Sbapt product(bool, EagerXrunInit, false, \ 1260286196Sbapt "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 1261286196Sbapt "but not all -Xrun libraries may support the state of the VM " \ 1262286196Sbapt "at this time") \ 1263286196Sbapt \ 1264286196Sbapt product(bool, PreserveAllAnnotations, false, \ 1265286196Sbapt "Preserve RuntimeInvisibleAnnotations as well " \ 1266286196Sbapt "as RuntimeVisibleAnnotations") \ 1267286196Sbapt \ 1268286196Sbapt develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 1269286196Sbapt "Number of OutOfMemoryErrors preallocated with backtrace") \ 1270286196Sbapt \ 1271286196Sbapt product(bool, UseXMMForArrayCopy, false, \ 1272286196Sbapt "Use SSE2 MOVQ instruction for Arraycopy") \ 1273286196Sbapt \ 1274286196Sbapt product(intx, FieldsAllocationStyle, 1, \ 1275286196Sbapt "0 - type based with oops first, " \ 1276286196Sbapt "1 - with oops last, " \ 1277286196Sbapt "2 - oops in super and sub classes are together") \ 1278286196Sbapt range(0, 2) \ 1279286196Sbapt \ 1280286196Sbapt product(bool, CompactFields, true, \ 1281286196Sbapt "Allocate nonstatic fields in gaps between previous fields") \ 1282286196Sbapt \ 1283286196Sbapt notproduct(bool, PrintFieldLayout, false, \ 1284286196Sbapt "Print field layout for each class") \ 1285286196Sbapt \ 1286286196Sbapt /* Need to limit the extent of the padding to reasonable size. */\ 1287286196Sbapt /* 8K is well beyond the reasonable HW cache line size, even with */\ 1288286196Sbapt /* aggressive prefetching, while still leaving the room for segregating */\ 1289286196Sbapt /* among the distinct pages. */\ 1290286196Sbapt product(intx, ContendedPaddingWidth, 128, \ 1291286196Sbapt "How many bytes to pad the fields/classes marked @Contended with")\ 1292286196Sbapt range(0, 8192) \ 1293286196Sbapt constraint(ContendedPaddingWidthConstraintFunc,AfterErgo) \ 1294286196Sbapt \ 1295286196Sbapt product(bool, EnableContended, true, \ 1296286196Sbapt "Enable @Contended annotation support") \ 1297286196Sbapt \ 1298286196Sbapt product(bool, RestrictContended, true, \ 1299286196Sbapt "Restrict @Contended to trusted classes") \ 1300286196Sbapt \ 1301286196Sbapt product(bool, UseBiasedLocking, true, \ 1302286196Sbapt "Enable biased locking in JVM") \ 1303286196Sbapt \ 1304286196Sbapt product(intx, BiasedLockingStartupDelay, 4000, \ 1305286196Sbapt "Number of milliseconds to wait before enabling biased locking") \ 1306286196Sbapt range(0, (intx)(max_jint-(max_jint%PeriodicTask::interval_gran))) \ 1307286196Sbapt constraint(BiasedLockingStartupDelayFunc,AfterErgo) \ 1308286196Sbapt \ 1309286196Sbapt diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1310286196Sbapt "Print statistics of biased locking in JVM") \ 1311286196Sbapt \ 1312286196Sbapt product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1313286196Sbapt "Threshold of number of revocations per type to try to " \ 1314286196Sbapt "rebias all objects in the heap of that type") \ 1315286196Sbapt range(0, max_intx) \ 1316286196Sbapt constraint(BiasedLockingBulkRebiasThresholdFunc,AfterErgo) \ 1317286196Sbapt \ 1318286196Sbapt product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1319286196Sbapt "Threshold of number of revocations per type to permanently " \ 1320286196Sbapt "revoke biases of all objects in the heap of that type") \ 1321286196Sbapt range(0, max_intx) \ 1322286196Sbapt constraint(BiasedLockingBulkRevokeThresholdFunc,AfterErgo) \ 1323286196Sbapt \ 1324286196Sbapt product(intx, BiasedLockingDecayTime, 25000, \ 1325109961Sgad "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1326109961Sgad "type after previous bulk rebias") \ 1327286196Sbapt range(500, max_intx) \ 1328286196Sbapt constraint(BiasedLockingDecayTimeFunc,AfterErgo) \ 1329286196Sbapt \ 1330286196Sbapt product(bool, ExitOnOutOfMemoryError, false, \ 1331286196Sbapt "JVM exits on the first occurrence of an out-of-memory error") \ 1332286196Sbapt \ 1333286196Sbapt product(bool, CrashOnOutOfMemoryError, false, \ 1334286196Sbapt "JVM aborts, producing an error log and core/mini dump, on the " \ 1335286196Sbapt "first occurrence of an out-of-memory error") \ 1336286196Sbapt \ 1337286196Sbapt /* tracing */ \ 1338305741Sasomers \ 1339286196Sbapt develop(bool, StressRewriter, false, \ 1340286196Sbapt "Stress linktime bytecode rewriting") \ 1341286196Sbapt \ 1342286196Sbapt product(ccstr, TraceJVMTI, NULL, \ 1343286196Sbapt "Trace flags for JVMTI functions and events") \ 1344286196Sbapt \ 1345286196Sbapt /* This option can change an EMCP method into an obsolete method. */ \ 1346286196Sbapt /* This can affect tests that except specific methods to be EMCP. */ \ 1347286196Sbapt /* This option should be used with caution. */ \ 1348286196Sbapt product(bool, StressLdcRewrite, false, \ 1349286196Sbapt "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1350286196Sbapt \ 1351286196Sbapt /* change to false by default sometime after Mustang */ \ 1352109961Sgad product(bool, VerifyMergedCPBytecodes, true, \ 1353286196Sbapt "Verify bytecodes after RedefineClasses constant pool merging") \ 1354286196Sbapt \ 1355286196Sbapt develop(bool, TraceBytecodes, false, \ 1356286196Sbapt "Trace bytecode execution") \ 1357286196Sbapt \ 1358286196Sbapt develop(bool, TraceICs, false, \ 1359286196Sbapt "Trace inline cache changes") \ 1360286196Sbapt \ 1361286196Sbapt notproduct(bool, TraceInvocationCounterOverflow, false, \ 1362286196Sbapt "Trace method invocation counter overflow") \ 1363286196Sbapt \ 1364286196Sbapt develop(bool, TraceInlineCacheClearing, false, \ 1365286196Sbapt "Trace clearing of inline caches in nmethods") \ 1366109961Sgad \ 1367286196Sbapt develop(bool, TraceDependencies, false, \ 1368286196Sbapt "Trace dependencies") \ 1369286196Sbapt \ 1370286196Sbapt develop(bool, VerifyDependencies, trueInDebug, \ 1371286196Sbapt "Exercise and verify the compilation dependency mechanism") \ 1372286196Sbapt \ 1373286196Sbapt develop(bool, TraceNewOopMapGeneration, false, \ 1374286196Sbapt "Trace OopMapGeneration") \ 1375286196Sbapt \ 1376286198Sbapt develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1377286198Sbapt "Trace OopMapGeneration: print detailed cell states") \ 1378286198Sbapt \ 1379316347Sbapt develop(bool, TimeOopMap, false, \ 1380316347Sbapt "Time calls to GenerateOopMap::compute_map() in sum") \ 1381316347Sbapt \ 1382286196Sbapt develop(bool, TimeOopMap2, false, \ 1383286196Sbapt "Time calls to GenerateOopMap::compute_map() individually") \ 1384286196Sbapt \ 1385286196Sbapt develop(bool, TraceOopMapRewrites, false, \ 1386286196Sbapt "Trace rewriting of method oops during oop map generation") \ 1387286196Sbapt \ 1388327090Seugen develop(bool, TraceICBuffer, false, \ 1389327090Seugen "Trace usage of IC buffer") \ 1390326848Seugen \ 1391327090Seugen develop(bool, TraceCompiledIC, false, \ 1392326848Seugen "Trace changes of compiled IC") \ 1393327090Seugen \ 1394326848Seugen /* gc */ \ 1395286196Sbapt \ 1396286196Sbapt product(bool, UseSerialGC, false, \ 1397286196Sbapt "Use the Serial garbage collector") \ 1398286196Sbapt \ 1399286196Sbapt product(bool, UseG1GC, false, \ 1400286196Sbapt "Use the Garbage-First garbage collector") \ 1401286196Sbapt \ 1402286196Sbapt product(bool, UseParallelGC, false, \ 1403286196Sbapt "Use the Parallel Scavenge garbage collector") \ 1404286196Sbapt \ 1405286196Sbapt product(bool, UseParallelOldGC, false, \ 1406286196Sbapt "Use the Parallel Old garbage collector") \ 1407286196Sbapt \ 1408286196Sbapt product(uintx, HeapMaximumCompactionInterval, 20, \ 1409286196Sbapt "How often should we maximally compact the heap (not allowing " \ 1410286196Sbapt "any dead space)") \ 1411286196Sbapt range(0, max_uintx) \ 1412286196Sbapt \ 1413286196Sbapt product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1414286196Sbapt "The collection count for the first maximum compaction") \ 1415286196Sbapt range(0, max_uintx) \ 1416286196Sbapt \ 1417286196Sbapt product(bool, UseMaximumCompactionOnSystemGC, true, \ 1418286196Sbapt "Use maximum compaction in the Parallel Old garbage collector " \ 1419286196Sbapt "for a system GC") \ 1420109961Sgad \ 1421286196Sbapt product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1422286196Sbapt "The mean used by the parallel compact dead wood " \ 1423286196Sbapt "limiter (a number between 0-100)") \ 1424286196Sbapt range(0, 100) \ 1425286202Sbapt \ 1426286202Sbapt product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1427286196Sbapt "The standard deviation used by the parallel compact dead wood " \ 1428286196Sbapt "limiter (a number between 0-100)") \ 1429286196Sbapt range(0, 100) \ 1430286196Sbapt \ 1431284110Sbapt product(uint, ParallelGCThreads, 0, \ 1432286196Sbapt "Number of parallel threads parallel gc will use") \ 1433286196Sbapt constraint(ParallelGCThreadsConstraintFunc,AfterErgo) \ 1434286196Sbapt \ 1435286196Sbapt diagnostic(bool, UseSemaphoreGCThreadsSynchronization, true, \ 1436286196Sbapt "Use semaphore synchronization for the GC Threads, " \ 1437286196Sbapt "instead of synchronization based on mutexes") \ 1438286196Sbapt \ 1439286196Sbapt product(bool, UseDynamicNumberOfGCThreads, false, \ 1440286196Sbapt "Dynamically choose the number of parallel threads " \ 1441286196Sbapt "parallel gc will use") \ 1442286196Sbapt \ 1443286196Sbapt diagnostic(bool, InjectGCWorkerCreationFailure, false, \ 1444286196Sbapt "Inject thread creation failures for " \ 1445286196Sbapt "UseDynamicNumberOfGCThreads") \ 1446286196Sbapt \ 1447286196Sbapt diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 144820253Sjoerg "Force dynamic selection of the number of " \ 1449286196Sbapt "parallel threads parallel gc will use to aid debugging") \ 1450286196Sbapt \ 1451286196Sbapt product(size_t, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 145220253Sjoerg "Size of heap (bytes) per GC thread used in calculating the " \ 1453286196Sbapt "number of GC threads") \ 1454286196Sbapt range((size_t)os::vm_page_size(), (size_t)max_uintx) \ 1455286196Sbapt \ 1456286202Sbapt product(uint, ConcGCThreads, 0, \ 1457286202Sbapt "Number of threads concurrent gc will use") \ 1458286196Sbapt constraint(ConcGCThreadsConstraintFunc,AfterErgo) \ 145920253Sjoerg \ 1460286196Sbapt product(uintx, GCTaskTimeStampEntries, 200, \ 1461286196Sbapt "Number of time stamp entries per gc worker thread") \ 1462286196Sbapt range(1, max_uintx) \ 1463286196Sbapt \ 1464286196Sbapt product(bool, AlwaysTenure, false, \ 1465286196Sbapt "Always tenure objects in eden (ParallelGC only)") \ 1466286196Sbapt \ 1467286196Sbapt product(bool, NeverTenure, false, \ 1468286196Sbapt "Never tenure objects in eden, may tenure on overflow " \ 1469286196Sbapt "(ParallelGC only)") \ 1470286196Sbapt \ 1471286196Sbapt product(bool, ScavengeBeforeFullGC, true, \ 1472286196Sbapt "Scavenge youngest generation before each full GC.") \ 147320253Sjoerg \ 1474286196Sbapt product(bool, UseConcMarkSweepGC, false, \ 1475286196Sbapt "Use Concurrent Mark-Sweep GC in the old generation") \ 1476286196Sbapt \ 1477286196Sbapt product(bool, ExplicitGCInvokesConcurrent, false, \ 1478286196Sbapt "A System.gc() request invokes a concurrent collection; " \ 1479286196Sbapt "(effective only when using concurrent collectors)") \ 1480286196Sbapt \ 1481286196Sbapt product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1482286196Sbapt "A System.gc() request invokes a concurrent collection and " \ 148320253Sjoerg "also unloads classes during such a concurrent gc cycle " \ 1484286196Sbapt "(effective only when UseConcMarkSweepGC)") \ 1485286196Sbapt \ 1486286196Sbapt product(bool, GCLockerInvokesConcurrent, false, \ 1487286196Sbapt "The exit of a JNI critical section necessitating a scavenge, " \ 1488286196Sbapt "also kicks off a background concurrent collection") \ 1489286196Sbapt \ 1490286196Sbapt product(uintx, GCLockerEdenExpansionPercent, 5, \ 1491286196Sbapt "How much the GC can expand the eden by while the GC locker " \ 1492286196Sbapt "is active (as a percentage)") \ 1493286196Sbapt range(0, 100) \ 149420253Sjoerg \ 1495286196Sbapt diagnostic(uintx, GCLockerRetryAllocationCount, 2, \ 1496286196Sbapt "Number of times to retry allocations when " \ 1497286196Sbapt "blocked by the GC locker") \ 149820253Sjoerg range(0, max_uintx) \ 1499286196Sbapt \ 150020253Sjoerg product(bool, UseCMSBestFit, true, \ 1501286196Sbapt "Use CMS best fit allocation strategy") \ 1502286196Sbapt \ 1503286196Sbapt product(bool, UseParNewGC, false, \ 1504286196Sbapt "Use parallel threads in the new generation") \ 1505286196Sbapt \ 150620253Sjoerg product(uintx, ParallelGCBufferWastePct, 10, \ 150720747Sdavidn "Wasted fraction of parallel allocation buffer") \ 1508286196Sbapt range(0, 100) \ 1509286196Sbapt \ 151020747Sdavidn product(uintx, TargetPLABWastePct, 10, \ 1511286196Sbapt "Target wasted space in last buffer as percent of overall " \ 1512286196Sbapt "allocation") \ 1513286196Sbapt range(1, 100) \ 1514286196Sbapt \ 1515286196Sbapt product(uintx, PLABWeight, 75, \ 1516316347Sbapt "Percentage (0-100) used to weight the current sample when " \ 1517286196Sbapt "computing exponentially decaying average for ResizePLAB") \ 1518286196Sbapt range(0, 100) \ 1519286196Sbapt \ 1520286196Sbapt product(bool, ResizePLAB, true, \ 1521286196Sbapt "Dynamically resize (survivor space) promotion LAB's") \ 1522286196Sbapt \ 1523286196Sbapt product(int, ParGCArrayScanChunk, 50, \ 1524312931Sbapt "Scan a subset of object array and push remainder, if array is " \ 1525286218Sbapt "bigger than this") \ 1526286196Sbapt range(1, max_jint/3) \ 1527327090Seugen \ 152820747Sdavidn product(bool, ParGCUseLocalOverflow, false, \ 1529327090Seugen "Instead of a global overflow list, use local overflow stacks") \ 1530286196Sbapt \ 1531286196Sbapt product(bool, ParGCTrimOverflow, true, \ 1532286196Sbapt "Eagerly trim the local overflow lists " \ 1533286196Sbapt "(when ParGCUseLocalOverflow)") \ 1534312931Sbapt \ 1535326848Seugen notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 153620747Sdavidn "Simulate work queue overflow in ParNew") \ 1537286196Sbapt \ 1538286259Sed notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1539286196Sbapt "An `interval' counter that determines how frequently " \ 1540286196Sbapt "we simulate overflow; a smaller number increases frequency") \ 1541286196Sbapt \ 1542286196Sbapt product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1543286196Sbapt "The desired number of objects to claim from the overflow list") \ 1544286196Sbapt range(0, max_uintx) \ 1545286196Sbapt \ 1546286196Sbapt diagnostic(uintx, ParGCStridesPerThread, 2, \ 1547286196Sbapt "The number of strides per worker thread that we divide up the " \ 1548285433Sbapt "card table scanning work into") \ 1549286196Sbapt range(1, max_uintx) \ 1550286196Sbapt constraint(ParGCStridesPerThreadConstraintFunc,AfterErgo) \ 1551286196Sbapt \ 1552286196Sbapt diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 1553286196Sbapt "The number of cards in each chunk of the parallel chunks used " \ 1554286196Sbapt "during card table scanning") \ 1555286196Sbapt range(1, max_intx) \ 1556286196Sbapt constraint(ParGCCardsPerStrideChunkConstraintFunc,AfterMemoryInit)\ 1557286196Sbapt \ 1558286196Sbapt product(uintx, OldPLABWeight, 50, \ 1559286196Sbapt "Percentage (0-100) used to weight the current sample when " \ 1560286196Sbapt "computing exponentially decaying average for resizing " \ 1561286196Sbapt "OldPLABSize") \ 1562286196Sbapt range(0, 100) \ 1563286196Sbapt \ 1564286196Sbapt product(bool, ResizeOldPLAB, true, \ 1565327090Seugen "Dynamically resize (old gen) promotion LAB's") \ 1566286196Sbapt \ 1567286196Sbapt product(size_t, CMSOldPLABMax, 1024, \ 1568327090Seugen "Maximum size of CMS gen promotion LAB caches per worker " \ 1569286196Sbapt "per block size") \ 1570286196Sbapt range(1, max_uintx) \ 1571286196Sbapt constraint(CMSOldPLABMaxConstraintFunc,AfterMemoryInit) \ 1572286196Sbapt \ 1573286196Sbapt product(size_t, CMSOldPLABMin, 16, \ 1574286196Sbapt "Minimum size of CMS gen promotion LAB caches per worker " \ 1575286196Sbapt "per block size") \ 1576286196Sbapt range(1, max_uintx) \ 1577286196Sbapt constraint(CMSOldPLABMinConstraintFunc,AfterMemoryInit) \ 1578286196Sbapt \ 1579286196Sbapt product(uintx, CMSOldPLABNumRefills, 4, \ 1580286196Sbapt "Nominal number of refills of CMS gen promotion LAB cache " \ 1581286196Sbapt "per worker per block size") \ 1582286196Sbapt range(1, max_uintx) \ 1583286196Sbapt \ 1584286196Sbapt product(bool, CMSOldPLABResizeQuicker, false, \ 1585286196Sbapt "React on-the-fly during a scavenge to a sudden " \ 1586286196Sbapt "change in block demand rate") \ 1587286196Sbapt \ 1588286196Sbapt product(uintx, CMSOldPLABToleranceFactor, 4, \ 1589286196Sbapt "The tolerance of the phase-change detector for on-the-fly " \ 1590286196Sbapt "PLAB resizing during a scavenge") \ 1591286196Sbapt range(1, max_uintx) \ 1592286196Sbapt \ 1593286196Sbapt product(uintx, CMSOldPLABReactivityFactor, 2, \ 1594286196Sbapt "The gain in the feedback loop for on-the-fly PLAB resizing " \ 1595286196Sbapt "during a scavenge") \ 1596286196Sbapt range(1, max_uintx) \ 1597286196Sbapt \ 1598286196Sbapt product(bool, AlwaysPreTouch, false, \ 1599286196Sbapt "Force all freshly committed pages to be pre-touched") \ 1600286196Sbapt \ 1601286196Sbapt product(size_t, PreTouchParallelChunkSize, 1 * G, \ 1602286196Sbapt "Per-thread chunk size for parallel memory pre-touch.") \ 1603286196Sbapt range(1, SIZE_MAX / 2) \ 1604286196Sbapt \ 1605286196Sbapt product_pd(size_t, CMSYoungGenPerWorker, \ 1606286196Sbapt "The maximum size of young gen chosen by default per GC worker " \ 1607286196Sbapt "thread available") \ 1608286196Sbapt range(1, max_uintx) \ 1609286196Sbapt \ 1610286196Sbapt product(uintx, CMSIncrementalSafetyFactor, 10, \ 1611286196Sbapt "Percentage (0-100) used to add conservatism when computing the " \ 1612286196Sbapt "duty cycle") \ 1613286196Sbapt range(0, 100) \ 1614286196Sbapt \ 1615286196Sbapt product(uintx, CMSExpAvgFactor, 50, \ 1616286196Sbapt "Percentage (0-100) used to weight the current sample when " \ 1617286196Sbapt "computing exponential averages for CMS statistics") \ 1618286196Sbapt range(0, 100) \ 1619286196Sbapt \ 1620286196Sbapt product(uintx, CMS_FLSWeight, 75, \ 1621286196Sbapt "Percentage (0-100) used to weight the current sample when " \ 1622286196Sbapt "computing exponentially decaying averages for CMS FLS " \ 1623286196Sbapt "statistics") \ 1624286196Sbapt range(0, 100) \ 1625286196Sbapt \ 1626286196Sbapt product(uintx, CMS_FLSPadding, 1, \ 1627286196Sbapt "The multiple of deviation from mean to use for buffering " \ 1628286196Sbapt "against volatility in free list demand") \ 1629286196Sbapt range(0, max_juint) \ 1630286196Sbapt \ 1631286196Sbapt product(uintx, FLSCoalescePolicy, 2, \ 1632286196Sbapt "CMS: aggressiveness level for coalescing, increasing " \ 163320747Sdavidn "from 0 to 4") \ 163420747Sdavidn range(0, 4) \ 1635286196Sbapt \ 1636286196Sbapt product(bool, FLSAlwaysCoalesceLarge, false, \ 1637286196Sbapt "CMS: larger free blocks are always available for coalescing") \ 1638286196Sbapt \ 1639286196Sbapt product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 1640286196Sbapt "CMS: the smaller the percentage the greater the coalescing " \ 1641286196Sbapt "force") \ 1642286196Sbapt range(0.0, 1.0) \ 1643286196Sbapt \ 1644286196Sbapt product(double, CMSSmallCoalSurplusPercent, 1.05, \ 1645286196Sbapt "CMS: the factor by which to inflate estimated demand of small " \ 1646286196Sbapt "block sizes to prevent coalescing with an adjoining block") \ 1647286196Sbapt range(0.0, DBL_MAX) \ 1648286196Sbapt \ 1649286196Sbapt product(double, CMSLargeCoalSurplusPercent, 0.95, \ 1650286196Sbapt "CMS: the factor by which to inflate estimated demand of large " \ 1651286196Sbapt "block sizes to prevent coalescing with an adjoining block") \ 1652286196Sbapt range(0.0, DBL_MAX) \ 1653286196Sbapt \ 1654286196Sbapt product(double, CMSSmallSplitSurplusPercent, 1.10, \ 1655286196Sbapt "CMS: the factor by which to inflate estimated demand of small " \ 1656286196Sbapt "block sizes to prevent splitting to supply demand for smaller " \ 1657286196Sbapt "blocks") \ 1658286196Sbapt range(0.0, DBL_MAX) \ 1659286196Sbapt \ 1660286196Sbapt product(double, CMSLargeSplitSurplusPercent, 1.00, \ 1661286196Sbapt "CMS: the factor by which to inflate estimated demand of large " \ 1662286196Sbapt "block sizes to prevent splitting to supply demand for smaller " \ 1663286196Sbapt "blocks") \ 1664286196Sbapt range(0.0, DBL_MAX) \ 1665286196Sbapt \ 1666286196Sbapt product(bool, CMSExtrapolateSweep, false, \ 1667286196Sbapt "CMS: cushion for block demand during sweep") \ 1668286196Sbapt \ 1669286196Sbapt product(uintx, CMS_SweepWeight, 75, \ 1670286196Sbapt "Percentage (0-100) used to weight the current sample when " \ 1671286196Sbapt "computing exponentially decaying average for inter-sweep " \ 1672286196Sbapt "duration") \ 1673286196Sbapt range(0, 100) \ 1674286196Sbapt \ 1675286196Sbapt product(uintx, CMS_SweepPadding, 1, \ 1676286196Sbapt "The multiple of deviation from mean to use for buffering " \ 1677286196Sbapt "against volatility in inter-sweep duration") \ 1678286196Sbapt range(0, max_juint) \ 1679286196Sbapt \ 1680286196Sbapt product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1681286196Sbapt "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1682296300Smarkj "duration exceeds this threshold in milliseconds") \ 1683286196Sbapt range(0, max_uintx) \ 1684286196Sbapt \ 1685286196Sbapt product(bool, CMSClassUnloadingEnabled, true, \ 1686286196Sbapt "Whether class unloading enabled when using CMS GC") \ 1687286196Sbapt \ 1688286202Sbapt product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1689286202Sbapt "When CMS class unloading is enabled, the maximum CMS cycle " \ 1690286196Sbapt "count for which classes may not be unloaded") \ 1691286196Sbapt range(0, max_uintx) \ 1692286196Sbapt \ 1693286196Sbapt product(uintx, CMSIndexedFreeListReplenish, 4, \ 1694286196Sbapt "Replenish an indexed free list with this number of chunks") \ 1695286196Sbapt range(1, max_uintx) \ 1696286196Sbapt \ 1697286196Sbapt product(bool, CMSReplenishIntermediate, true, \ 1698286196Sbapt "Replenish all intermediate free-list caches") \ 1699286196Sbapt \ 1700286196Sbapt product(bool, CMSSplitIndexedFreeListBlocks, true, \ 1701286196Sbapt "When satisfying batched demand, split blocks from the " \ 1702326848Seugen "IndexedFreeList whose size is a multiple of requested size") \ 1703327090Seugen \ 1704327090Seugen product(bool, CMSLoopWarn, false, \ 1705286196Sbapt "Warn in case of excessive CMS looping") \ 1706286196Sbapt \ 1707286196Sbapt /* where does the range max value of (max_jint - 1) come from? */ \ 1708327090Seugen product(size_t, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1709327090Seugen "Maximum size of marking stack") \ 1710286196Sbapt range(1, (max_jint - 1)) \ 1711286196Sbapt \ 1712286196Sbapt product(size_t, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1713286196Sbapt "Size of marking stack") \ 1714286196Sbapt constraint(MarkStackSizeConstraintFunc,AfterErgo) \ 1715286196Sbapt \ 1716286196Sbapt notproduct(bool, CMSMarkStackOverflowALot, false, \ 1717286196Sbapt "Simulate frequent marking stack / work queue overflow") \ 1718286196Sbapt \ 1719286196Sbapt notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1720286196Sbapt "An \"interval\" counter that determines how frequently " \ 1721286196Sbapt "to simulate overflow; a smaller number increases frequency") \ 1722286196Sbapt \ 1723286196Sbapt product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1724286196Sbapt "Maximum number of abortable preclean iterations, if > 0") \ 1725286196Sbapt range(0, max_uintx) \ 1726286196Sbapt \ 1727286196Sbapt product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1728286196Sbapt "Maximum time in abortable preclean (in milliseconds)") \ 1729286196Sbapt range(0, max_intx) \ 1730287701Sbapt \ 1731286196Sbapt product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1732286196Sbapt "Nominal minimum work per abortable preclean iteration") \ 1733286196Sbapt range(0, max_uintx) \ 1734286196Sbapt \ 1735286196Sbapt manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1736286196Sbapt "Time that we sleep between iterations when not given " \ 1737286196Sbapt "enough work per iteration") \ 1738286196Sbapt range(0, max_intx) \ 1739286196Sbapt \ 1740286196Sbapt /* 4096 = CardTableModRefBS::card_size_in_words * BitsPerWord */ \ 1741286196Sbapt product(size_t, CMSRescanMultiple, 32, \ 1742286196Sbapt "Size (in cards) of CMS parallel rescan task") \ 1743286196Sbapt range(1, SIZE_MAX / 4096) \ 1744286196Sbapt constraint(CMSRescanMultipleConstraintFunc,AfterMemoryInit) \ 1745286196Sbapt \ 1746305741Sasomers /* 4096 = CardTableModRefBS::card_size_in_words * BitsPerWord */ \ 1747286775Sbapt product(size_t, CMSConcMarkMultiple, 32, \ 1748286196Sbapt "Size (in cards) of CMS concurrent MT marking task") \ 1749286196Sbapt range(1, SIZE_MAX / 4096) \ 1750286196Sbapt constraint(CMSConcMarkMultipleConstraintFunc,AfterMemoryInit) \ 1751286196Sbapt \ 1752286196Sbapt product(bool, CMSAbortSemantics, false, \ 1753286196Sbapt "Whether abort-on-overflow semantics is implemented") \ 1754286196Sbapt \ 1755286196Sbapt product(bool, CMSParallelInitialMarkEnabled, true, \ 1756286196Sbapt "Use the parallel initial mark.") \ 1757286196Sbapt \ 1758286196Sbapt product(bool, CMSParallelRemarkEnabled, true, \ 1759286196Sbapt "Whether parallel remark enabled (only if ParNewGC)") \ 1760286196Sbapt \ 1761286196Sbapt product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1762286196Sbapt "Whether parallel remark of survivor space " \ 1763286196Sbapt "enabled (effective only if CMSParallelRemarkEnabled)") \ 1764286196Sbapt \ 1765286196Sbapt product(bool, CMSPLABRecordAlways, true, \ 1766286196Sbapt "Always record survivor space PLAB boundaries (effective only " \ 1767286196Sbapt "if CMSParallelSurvivorRemarkEnabled)") \ 1768286196Sbapt \ 1769286196Sbapt product(bool, CMSEdenChunksRecordAlways, true, \ 1770286196Sbapt "Always record eden chunks used for the parallel initial mark " \ 1771286196Sbapt "or remark of eden") \ 1772286196Sbapt \ 1773286196Sbapt product(bool, CMSConcurrentMTEnabled, true, \ 1774286196Sbapt "Whether multi-threaded concurrent work enabled " \ 1775286196Sbapt "(effective only if ParNewGC)") \ 1776286196Sbapt \ 1777286196Sbapt product(bool, CMSPrecleaningEnabled, true, \ 1778286196Sbapt "Whether concurrent precleaning enabled") \ 1779286196Sbapt \ 1780286196Sbapt product(uintx, CMSPrecleanIter, 3, \ 1781286196Sbapt "Maximum number of precleaning iteration passes") \ 1782286196Sbapt range(0, 9) \ 1783286196Sbapt \ 1784286196Sbapt product(uintx, CMSPrecleanDenominator, 3, \ 1785286196Sbapt "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ 1786286196Sbapt "ratio") \ 1787286196Sbapt range(1, max_uintx) \ 1788286196Sbapt constraint(CMSPrecleanDenominatorConstraintFunc,AfterErgo) \ 1789286196Sbapt \ 1790286196Sbapt product(uintx, CMSPrecleanNumerator, 2, \ 1791286196Sbapt "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ 1792286196Sbapt "ratio") \ 1793286196Sbapt range(0, max_uintx-1) \ 1794286196Sbapt constraint(CMSPrecleanNumeratorConstraintFunc,AfterErgo) \ 1795286196Sbapt \ 1796286196Sbapt product(bool, CMSPrecleanRefLists1, true, \ 1797286196Sbapt "Preclean ref lists during (initial) preclean phase") \ 1798286196Sbapt \ 1799286196Sbapt product(bool, CMSPrecleanRefLists2, false, \ 1800286196Sbapt "Preclean ref lists during abortable preclean phase") \ 1801286196Sbapt \ 1802286196Sbapt product(bool, CMSPrecleanSurvivors1, false, \ 1803286196Sbapt "Preclean survivors during (initial) preclean phase") \ 1804286196Sbapt \ 1805286196Sbapt product(bool, CMSPrecleanSurvivors2, true, \ 1806286196Sbapt "Preclean survivors during abortable preclean phase") \ 1807286196Sbapt \ 1808286196Sbapt product(uintx, CMSPrecleanThreshold, 1000, \ 1809286196Sbapt "Do not iterate again if number of dirty cards is less than this")\ 1810286196Sbapt range(100, max_uintx) \ 1811286196Sbapt \ 1812286196Sbapt product(bool, CMSCleanOnEnter, true, \ 1813286196Sbapt "Clean-on-enter optimization for reducing number of dirty cards") \ 1814286196Sbapt \ 1815286196Sbapt product(uintx, CMSRemarkVerifyVariant, 1, \ 1816286196Sbapt "Choose variant (1,2) of verification following remark") \ 1817286196Sbapt range(1, 2) \ 1818286196Sbapt \ 1819286196Sbapt product(size_t, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1820286196Sbapt "If Eden size is below this, do not try to schedule remark") \ 1821285433Sbapt range(0, max_uintx) \ 1822286196Sbapt \ 1823286196Sbapt product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1824286196Sbapt "The Eden occupancy percentage (0-100) at which " \ 1825285433Sbapt "to try and schedule remark pause") \ 1826312931Sbapt range(0, 100) \ 1827286196Sbapt \ 1828286196Sbapt product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1829286196Sbapt "Start sampling eden top at least before young gen " \ 1830286196Sbapt "occupancy reaches 1/<ratio> of the size at which " \ 1831286196Sbapt "we plan to schedule remark") \ 1832286196Sbapt range(1, max_uintx) \ 1833286196Sbapt \ 1834286196Sbapt product(uintx, CMSSamplingGrain, 16*K, \ 1835286196Sbapt "The minimum distance between eden samples for CMS (see above)") \ 1836286196Sbapt range(ObjectAlignmentInBytes, max_uintx) \ 1837286196Sbapt constraint(CMSSamplingGrainConstraintFunc,AfterMemoryInit) \ 1838286196Sbapt \ 183920747Sdavidn product(bool, CMSScavengeBeforeRemark, false, \ 1840 "Attempt scavenge before the CMS remark step") \ 1841 \ 1842 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1843 "Don't drain below this size per parallel worker/thief") \ 1844 range(1, max_juint) \ 1845 constraint(CMSWorkQueueDrainThresholdConstraintFunc,AfterErgo) \ 1846 \ 1847 manageable(intx, CMSWaitDuration, 2000, \ 1848 "Time in milliseconds that CMS thread waits for young GC") \ 1849 range(min_jint, max_jint) \ 1850 \ 1851 develop(uintx, CMSCheckInterval, 1000, \ 1852 "Interval in milliseconds that CMS thread checks if it " \ 1853 "should start a collection cycle") \ 1854 \ 1855 product(bool, CMSYield, true, \ 1856 "Yield between steps of CMS") \ 1857 \ 1858 product(size_t, CMSBitMapYieldQuantum, 10*M, \ 1859 "Bitmap operations should process at most this many bits " \ 1860 "between yields") \ 1861 range(1, max_uintx) \ 1862 constraint(CMSBitMapYieldQuantumConstraintFunc,AfterMemoryInit) \ 1863 \ 1864 product(bool, CMSPrintChunksInDump, false, \ 1865 "If logging for the \"gc\" and \"promotion\" tags is enabled on" \ 1866 "trace level include more detailed information about the" \ 1867 "free chunks") \ 1868 \ 1869 product(bool, CMSPrintObjectsInDump, false, \ 1870 "If logging for the \"gc\" and \"promotion\" tags is enabled on" \ 1871 "trace level include more detailed information about the" \ 1872 "allocated objects") \ 1873 \ 1874 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1875 "Verify that all references across the FLS boundary " \ 1876 "are to valid objects") \ 1877 \ 1878 diagnostic(bool, FLSVerifyLists, false, \ 1879 "Do lots of (expensive) FreeListSpace verification") \ 1880 \ 1881 diagnostic(bool, FLSVerifyIndexTable, false, \ 1882 "Do lots of (expensive) FLS index table verification") \ 1883 \ 1884 develop(bool, FLSVerifyDictionary, false, \ 1885 "Do lots of (expensive) FLS dictionary verification") \ 1886 \ 1887 develop(bool, VerifyBlockOffsetArray, false, \ 1888 "Do (expensive) block offset array verification") \ 1889 \ 1890 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 1891 "Maintain _unallocated_block in BlockOffsetArray " \ 1892 "(currently applicable only to CMS collector)") \ 1893 \ 1894 product(intx, RefDiscoveryPolicy, 0, \ 1895 "Select type of reference discovery policy: " \ 1896 "reference-based(0) or referent-based(1)") \ 1897 range(ReferenceProcessor::DiscoveryPolicyMin, \ 1898 ReferenceProcessor::DiscoveryPolicyMax) \ 1899 \ 1900 product(bool, ParallelRefProcEnabled, false, \ 1901 "Enable parallel reference processing whenever possible") \ 1902 \ 1903 product(bool, ParallelRefProcBalancingEnabled, true, \ 1904 "Enable balancing of reference processing queues") \ 1905 \ 1906 product(uintx, CMSTriggerRatio, 80, \ 1907 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1908 "allocated before a CMS collection cycle commences") \ 1909 range(0, 100) \ 1910 \ 1911 product(uintx, CMSBootstrapOccupancy, 50, \ 1912 "Percentage CMS generation occupancy at which to " \ 1913 "initiate CMS collection for bootstrapping collection stats") \ 1914 range(0, 100) \ 1915 \ 1916 product(intx, CMSInitiatingOccupancyFraction, -1, \ 1917 "Percentage CMS generation occupancy to start a CMS collection " \ 1918 "cycle. A negative value means that CMSTriggerRatio is used") \ 1919 range(min_intx, 100) \ 1920 \ 1921 product(uintx, InitiatingHeapOccupancyPercent, 45, \ 1922 "The percent occupancy (IHOP) of the current old generation " \ 1923 "capacity above which a concurrent mark cycle will be initiated " \ 1924 "Its value may change over time if adaptive IHOP is enabled, " \ 1925 "otherwise the value remains constant. " \ 1926 "In the latter case a value of 0 will result as frequent as " \ 1927 "possible concurrent marking cycles. A value of 100 disables " \ 1928 "concurrent marking. " \ 1929 "Fragmentation waste in the old generation is not considered " \ 1930 "free space in this calculation. (G1 collector only)") \ 1931 range(0, 100) \ 1932 \ 1933 manageable(intx, CMSTriggerInterval, -1, \ 1934 "Commence a CMS collection cycle (at least) every so many " \ 1935 "milliseconds (0 permanently, -1 disabled)") \ 1936 range(-1, max_intx) \ 1937 \ 1938 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1939 "Only use occupancy as a criterion for starting a CMS collection")\ 1940 \ 1941 product(uintx, CMSIsTooFullPercentage, 98, \ 1942 "An absolute ceiling above which CMS will always consider the " \ 1943 "unloading of classes when class unloading is enabled") \ 1944 range(0, 100) \ 1945 \ 1946 develop(bool, CMSTestInFreeList, false, \ 1947 "Check if the coalesced range is already in the " \ 1948 "free lists as claimed") \ 1949 \ 1950 notproduct(bool, CMSVerifyReturnedBytes, false, \ 1951 "Check that all the garbage collected was returned to the " \ 1952 "free lists") \ 1953 \ 1954 notproduct(bool, ScavengeALot, false, \ 1955 "Force scavenge at every Nth exit from the runtime system " \ 1956 "(N=ScavengeALotInterval)") \ 1957 \ 1958 develop(bool, FullGCALot, false, \ 1959 "Force full gc at every Nth exit from the runtime system " \ 1960 "(N=FullGCALotInterval)") \ 1961 \ 1962 notproduct(bool, GCALotAtAllSafepoints, false, \ 1963 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1964 \ 1965 notproduct(bool, PromotionFailureALot, false, \ 1966 "Use promotion failure handling on every youngest generation " \ 1967 "collection") \ 1968 \ 1969 develop(uintx, PromotionFailureALotCount, 1000, \ 1970 "Number of promotion failures occurring at PLAB " \ 1971 "refill attempts (ParNew) or promotion attempts " \ 1972 "(other young collectors)") \ 1973 \ 1974 develop(uintx, PromotionFailureALotInterval, 5, \ 1975 "Total collections between promotion failures a lot") \ 1976 \ 1977 experimental(uintx, WorkStealingSleepMillis, 1, \ 1978 "Sleep time when sleep is used for yields") \ 1979 \ 1980 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 1981 "Number of yields before a sleep is done during work stealing") \ 1982 \ 1983 experimental(uintx, WorkStealingHardSpins, 4096, \ 1984 "Number of iterations in a spin loop between checks on " \ 1985 "time out of hard spin") \ 1986 \ 1987 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 1988 "Ratio of hard spins to calls to yield") \ 1989 \ 1990 develop(uintx, ObjArrayMarkingStride, 2048, \ 1991 "Number of object array elements to push onto the marking stack " \ 1992 "before pushing a continuation entry") \ 1993 \ 1994 develop(bool, MetadataAllocationFailALot, false, \ 1995 "Fail metadata allocations at intervals controlled by " \ 1996 "MetadataAllocationFailALotInterval") \ 1997 \ 1998 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 1999 "Metadata allocation failure a lot interval") \ 2000 \ 2001 notproduct(bool, ExecuteInternalVMTests, false, \ 2002 "Enable execution of internal VM tests") \ 2003 \ 2004 notproduct(bool, VerboseInternalVMTests, false, \ 2005 "Turn on logging for internal VM tests.") \ 2006 \ 2007 product(bool, ExecutingUnitTests, false, \ 2008 "Whether the JVM is running unit tests or not") \ 2009 \ 2010 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 2011 \ 2012 product_pd(bool, ResizeTLAB, \ 2013 "Dynamically resize TLAB size for threads") \ 2014 \ 2015 product(bool, ZeroTLAB, false, \ 2016 "Zero out the newly created TLAB") \ 2017 \ 2018 product(bool, FastTLABRefill, true, \ 2019 "Use fast TLAB refill code") \ 2020 \ 2021 product(bool, TLABStats, true, \ 2022 "Provide more detailed and expensive TLAB statistics.") \ 2023 \ 2024 product_pd(bool, NeverActAsServerClassMachine, \ 2025 "Never act like a server-class machine") \ 2026 \ 2027 product(bool, AlwaysActAsServerClassMachine, false, \ 2028 "Always act like a server-class machine") \ 2029 \ 2030 product_pd(uint64_t, MaxRAM, \ 2031 "Real memory size (in bytes) used to set maximum heap size") \ 2032 range(0, 0XFFFFFFFFFFFFFFFF) \ 2033 \ 2034 product(size_t, ErgoHeapSizeLimit, 0, \ 2035 "Maximum ergonomically set heap size (in bytes); zero means use " \ 2036 "MaxRAM / MaxRAMFraction") \ 2037 range(0, max_uintx) \ 2038 \ 2039 experimental(bool, UseCGroupMemoryLimitForHeap, false, \ 2040 "Use CGroup memory limit as physical memory limit for heap " \ 2041 "sizing") \ 2042 \ 2043 product(uintx, MaxRAMFraction, 4, \ 2044 "Maximum fraction (1/n) of real memory used for maximum heap " \ 2045 "size") \ 2046 range(1, max_uintx) \ 2047 \ 2048 product(uintx, MinRAMFraction, 2, \ 2049 "Minimum fraction (1/n) of real memory used for maximum heap " \ 2050 "size on systems with small physical memory size") \ 2051 range(1, max_uintx) \ 2052 \ 2053 product(uintx, InitialRAMFraction, 64, \ 2054 "Fraction (1/n) of real memory used for initial heap size") \ 2055 range(1, max_uintx) \ 2056 \ 2057 develop(uintx, MaxVirtMemFraction, 2, \ 2058 "Maximum fraction (1/n) of virtual memory used for ergonomically "\ 2059 "determining maximum heap size") \ 2060 \ 2061 product(bool, UseAutoGCSelectPolicy, false, \ 2062 "Use automatic collection selection policy") \ 2063 \ 2064 product(uintx, AutoGCSelectPauseMillis, 5000, \ 2065 "Automatic GC selection pause threshold in milliseconds") \ 2066 range(0, max_uintx) \ 2067 \ 2068 product(bool, UseAdaptiveSizePolicy, true, \ 2069 "Use adaptive generation sizing policies") \ 2070 \ 2071 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 2072 "Use adaptive survivor sizing policies") \ 2073 \ 2074 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 2075 "Use adaptive young-old sizing policies at minor collections") \ 2076 \ 2077 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 2078 "Use adaptive young-old sizing policies at major collections") \ 2079 \ 2080 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 2081 "Include statistics from System.gc() for adaptive size policy") \ 2082 \ 2083 product(bool, UseAdaptiveGCBoundary, false, \ 2084 "Allow young-old boundary to move") \ 2085 \ 2086 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 2087 "Resize the virtual spaces of the young or old generations") \ 2088 range(-1, 1) \ 2089 \ 2090 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 2091 "Policy for changing generation size for throughput goals") \ 2092 range(0, 1) \ 2093 \ 2094 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 2095 "Number of steps where heuristics is used before data is used") \ 2096 range(0, max_uintx) \ 2097 \ 2098 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2099 "Number of collections before the adaptive sizing is started") \ 2100 \ 2101 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2102 "Collection interval for printing information; zero means never") \ 2103 range(0, max_uintx) \ 2104 \ 2105 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2106 "Use adaptive minimum footprint as a goal") \ 2107 \ 2108 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2109 "Weight given to exponential resizing, between 0 and 100") \ 2110 range(0, 100) \ 2111 \ 2112 product(uintx, AdaptiveTimeWeight, 25, \ 2113 "Weight given to time in adaptive policy, between 0 and 100") \ 2114 range(0, 100) \ 2115 \ 2116 product(uintx, PausePadding, 1, \ 2117 "How much buffer to keep for pause time") \ 2118 range(0, max_juint) \ 2119 \ 2120 product(uintx, PromotedPadding, 3, \ 2121 "How much buffer to keep for promotion failure") \ 2122 range(0, max_juint) \ 2123 \ 2124 product(uintx, SurvivorPadding, 3, \ 2125 "How much buffer to keep for survivor overflow") \ 2126 range(0, max_juint) \ 2127 \ 2128 product(uintx, ThresholdTolerance, 10, \ 2129 "Allowed collection cost difference between generations") \ 2130 range(0, 100) \ 2131 \ 2132 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 2133 "If collection costs are within margin, reduce both by full " \ 2134 "delta") \ 2135 range(0, 100) \ 2136 \ 2137 product(uintx, YoungGenerationSizeIncrement, 20, \ 2138 "Adaptive size percentage change in young generation") \ 2139 range(0, 100) \ 2140 \ 2141 product(uintx, YoungGenerationSizeSupplement, 80, \ 2142 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 2143 range(0, 100) \ 2144 \ 2145 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 2146 "Decay factor to YoungedGenerationSizeSupplement") \ 2147 range(1, max_uintx) \ 2148 \ 2149 product(uintx, TenuredGenerationSizeIncrement, 20, \ 2150 "Adaptive size percentage change in tenured generation") \ 2151 range(0, 100) \ 2152 \ 2153 product(uintx, TenuredGenerationSizeSupplement, 80, \ 2154 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 2155 range(0, 100) \ 2156 \ 2157 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 2158 "Decay factor to TenuredGenerationSizeIncrement") \ 2159 range(1, max_uintx) \ 2160 \ 2161 product(uintx, MaxGCPauseMillis, max_uintx - 1, \ 2162 "Adaptive size policy maximum GC pause time goal in millisecond, "\ 2163 "or (G1 Only) the maximum GC time per MMU time slice") \ 2164 range(1, max_uintx - 1) \ 2165 constraint(MaxGCPauseMillisConstraintFunc,AfterErgo) \ 2166 \ 2167 product(uintx, GCPauseIntervalMillis, 0, \ 2168 "Time slice for MMU specification") \ 2169 constraint(GCPauseIntervalMillisConstraintFunc,AfterErgo) \ 2170 \ 2171 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 2172 "Adaptive size policy maximum GC minor pause time goal " \ 2173 "in millisecond") \ 2174 range(0, max_uintx) \ 2175 \ 2176 product(uintx, GCTimeRatio, 99, \ 2177 "Adaptive size policy application time to GC time ratio") \ 2178 range(0, max_juint) \ 2179 \ 2180 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 2181 "Adaptive size scale down factor for shrinking") \ 2182 range(1, max_uintx) \ 2183 \ 2184 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 2185 "Adaptive size decays the major cost for long major intervals") \ 2186 \ 2187 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 2188 "Time scale over which major costs decay") \ 2189 range(0, max_uintx) \ 2190 \ 2191 product(uintx, MinSurvivorRatio, 3, \ 2192 "Minimum ratio of young generation/survivor space size") \ 2193 range(3, max_uintx) \ 2194 \ 2195 product(uintx, InitialSurvivorRatio, 8, \ 2196 "Initial ratio of young generation/survivor space size") \ 2197 range(0, max_uintx) \ 2198 \ 2199 product(size_t, BaseFootPrintEstimate, 256*M, \ 2200 "Estimate of footprint other than Java Heap") \ 2201 range(0, max_uintx) \ 2202 \ 2203 product(bool, UseGCOverheadLimit, true, \ 2204 "Use policy to limit of proportion of time spent in GC " \ 2205 "before an OutOfMemory error is thrown") \ 2206 \ 2207 product(uintx, GCTimeLimit, 98, \ 2208 "Limit of the proportion of time spent in GC before " \ 2209 "an OutOfMemoryError is thrown (used with GCHeapFreeLimit)") \ 2210 range(0, 100) \ 2211 \ 2212 product(uintx, GCHeapFreeLimit, 2, \ 2213 "Minimum percentage of free space after a full GC before an " \ 2214 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 2215 range(0, 100) \ 2216 \ 2217 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 2218 "Number of consecutive collections before gc time limit fires") \ 2219 range(1, max_uintx) \ 2220 \ 2221 product(intx, PrefetchCopyIntervalInBytes, -1, \ 2222 "How far ahead to prefetch destination area (<= 0 means off)") \ 2223 range(-1, max_jint) \ 2224 \ 2225 product(intx, PrefetchScanIntervalInBytes, -1, \ 2226 "How far ahead to prefetch scan area (<= 0 means off)") \ 2227 range(-1, max_jint) \ 2228 \ 2229 product(intx, PrefetchFieldsAhead, -1, \ 2230 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 2231 range(-1, max_jint) \ 2232 \ 2233 diagnostic(bool, VerifyDuringStartup, false, \ 2234 "Verify memory system before executing any Java code " \ 2235 "during VM initialization") \ 2236 \ 2237 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 2238 "Verify system before exiting") \ 2239 \ 2240 diagnostic(bool, VerifyBeforeGC, false, \ 2241 "Verify memory system before GC") \ 2242 \ 2243 diagnostic(bool, VerifyAfterGC, false, \ 2244 "Verify memory system after GC") \ 2245 \ 2246 diagnostic(bool, VerifyDuringGC, false, \ 2247 "Verify memory system during GC (between phases)") \ 2248 \ 2249 diagnostic(ccstrlist, VerifySubSet, "", \ 2250 "Memory sub-systems to verify when Verify*GC flag(s) " \ 2251 "are enabled. One or more sub-systems can be specified " \ 2252 "in a comma separated string. Sub-systems are: " \ 2253 "threads, heap, symbol_table, string_table, codecache, " \ 2254 "dictionary, classloader_data_graph, metaspace, jni_handles, " \ 2255 "codecache_oops") \ 2256 \ 2257 diagnostic(bool, GCParallelVerificationEnabled, true, \ 2258 "Enable parallel memory system verification") \ 2259 \ 2260 diagnostic(bool, DeferInitialCardMark, false, \ 2261 "When +ReduceInitialCardMarks, explicitly defer any that " \ 2262 "may arise from new_pre_store_barrier") \ 2263 \ 2264 product(bool, UseCondCardMark, false, \ 2265 "Check for already marked card before updating card table") \ 2266 \ 2267 diagnostic(bool, VerifyRememberedSets, false, \ 2268 "Verify GC remembered sets") \ 2269 \ 2270 diagnostic(bool, VerifyObjectStartArray, true, \ 2271 "Verify GC object start array if verify before/after") \ 2272 \ 2273 product(bool, DisableExplicitGC, false, \ 2274 "Ignore calls to System.gc()") \ 2275 \ 2276 notproduct(bool, CheckMemoryInitialization, false, \ 2277 "Check memory initialization") \ 2278 \ 2279 diagnostic(bool, BindCMSThreadToCPU, false, \ 2280 "Bind CMS Thread to CPU if possible") \ 2281 \ 2282 diagnostic(uintx, CPUForCMSThread, 0, \ 2283 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 2284 range(0, max_juint) \ 2285 \ 2286 product(bool, BindGCTaskThreadsToCPUs, false, \ 2287 "Bind GCTaskThreads to CPUs if possible") \ 2288 \ 2289 product(bool, UseGCTaskAffinity, false, \ 2290 "Use worker affinity when asking for GCTasks") \ 2291 \ 2292 product(uintx, ProcessDistributionStride, 4, \ 2293 "Stride through processors when distributing processes") \ 2294 range(0, max_juint) \ 2295 \ 2296 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 2297 "Number of times the coordinator GC thread will sleep while " \ 2298 "yielding before giving up and resuming GC") \ 2299 range(0, max_juint) \ 2300 \ 2301 product(uintx, CMSYieldSleepCount, 0, \ 2302 "Number of times a GC thread (minus the coordinator) " \ 2303 "will sleep while yielding before giving up and resuming GC") \ 2304 range(0, max_juint) \ 2305 \ 2306 product(bool, PrintGC, false, \ 2307 "Print message at garbage collection. " \ 2308 "Deprecated, use -Xlog:gc instead.") \ 2309 \ 2310 product(bool, PrintGCDetails, false, \ 2311 "Print more details at garbage collection. " \ 2312 "Deprecated, use -Xlog:gc* instead.") \ 2313 \ 2314 develop(intx, ConcGCYieldTimeout, 0, \ 2315 "If non-zero, assert that GC threads yield within this " \ 2316 "number of milliseconds") \ 2317 range(0, max_intx) \ 2318 \ 2319 develop(bool, TraceFinalizerRegistration, false, \ 2320 "Trace registration of final references") \ 2321 \ 2322 notproduct(bool, TraceScavenge, false, \ 2323 "Trace scavenge") \ 2324 \ 2325 product(bool, IgnoreEmptyClassPaths, false, \ 2326 "Ignore empty path elements in -classpath") \ 2327 \ 2328 product(size_t, InitialBootClassLoaderMetaspaceSize, \ 2329 NOT_LP64(2200*K) LP64_ONLY(4*M), \ 2330 "Initial size of the boot class loader data metaspace") \ 2331 range(30*K, max_uintx/BytesPerWord) \ 2332 constraint(InitialBootClassLoaderMetaspaceSizeConstraintFunc, AfterErgo)\ 2333 \ 2334 product(bool, TraceYoungGenTime, false, \ 2335 "Trace accumulated time for young collection") \ 2336 \ 2337 product(bool, TraceOldGenTime, false, \ 2338 "Trace accumulated time for old collection") \ 2339 \ 2340 product(bool, PrintHeapAtSIGBREAK, true, \ 2341 "Print heap layout in response to SIGBREAK") \ 2342 \ 2343 manageable(bool, PrintClassHistogram, false, \ 2344 "Print a histogram of class instances") \ 2345 \ 2346 develop(bool, TraceGCTaskManager, false, \ 2347 "Trace actions of the GC task manager") \ 2348 \ 2349 develop(bool, TraceGCTaskQueue, false, \ 2350 "Trace actions of the GC task queues") \ 2351 \ 2352 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2353 "Trace marking phase in ParallelOldGC") \ 2354 \ 2355 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2356 "Trace dense prefix computation for ParallelOldGC") \ 2357 \ 2358 develop(bool, IgnoreLibthreadGPFault, false, \ 2359 "Suppress workaround for libthread GP fault") \ 2360 \ 2361 experimental(double, ObjectCountCutOffPercent, 0.5, \ 2362 "The percentage of the used heap that the instances of a class " \ 2363 "must occupy for the class to generate a trace event") \ 2364 range(0.0, 100.0) \ 2365 \ 2366 /* JVMTI heap profiling */ \ 2367 \ 2368 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2369 "Trace JVMTI object tagging calls") \ 2370 \ 2371 diagnostic(bool, VerifyBeforeIteration, false, \ 2372 "Verify memory system before JVMTI iteration") \ 2373 \ 2374 /* compiler interface */ \ 2375 \ 2376 develop(bool, CIPrintCompilerName, false, \ 2377 "when CIPrint is active, print the name of the active compiler") \ 2378 \ 2379 diagnostic(bool, CIPrintCompileQueue, false, \ 2380 "display the contents of the compile queue whenever a " \ 2381 "compilation is enqueued") \ 2382 \ 2383 develop(bool, CIPrintRequests, false, \ 2384 "display every request for compilation") \ 2385 \ 2386 product(bool, CITime, false, \ 2387 "collect timing information for compilation") \ 2388 \ 2389 develop(bool, CITimeVerbose, false, \ 2390 "be more verbose in compilation timings") \ 2391 \ 2392 develop(bool, CITimeEach, false, \ 2393 "display timing information after each successful compilation") \ 2394 \ 2395 develop(bool, CICountOSR, false, \ 2396 "use a separate counter when assigning ids to osr compilations") \ 2397 \ 2398 develop(bool, CICompileNatives, true, \ 2399 "compile native methods if supported by the compiler") \ 2400 \ 2401 develop_pd(bool, CICompileOSR, \ 2402 "compile on stack replacement methods if supported by the " \ 2403 "compiler") \ 2404 \ 2405 develop(bool, CIPrintMethodCodes, false, \ 2406 "print method bytecodes of the compiled code") \ 2407 \ 2408 develop(bool, CIPrintTypeFlow, false, \ 2409 "print the results of ciTypeFlow analysis") \ 2410 \ 2411 develop(bool, CITraceTypeFlow, false, \ 2412 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2413 \ 2414 develop(intx, OSROnlyBCI, -1, \ 2415 "OSR only at this bci. Negative values mean exclude that bci") \ 2416 \ 2417 /* compiler */ \ 2418 \ 2419 /* notice: the max range value here is max_jint, not max_intx */ \ 2420 /* because of overflow issue */ \ 2421 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2422 "Number of compiler threads to run") \ 2423 range(0, max_jint) \ 2424 constraint(CICompilerCountConstraintFunc, AfterErgo) \ 2425 \ 2426 product(intx, CompilationPolicyChoice, 0, \ 2427 "which compilation policy (0-3)") \ 2428 range(0, 3) \ 2429 \ 2430 develop(bool, UseStackBanging, true, \ 2431 "use stack banging for stack overflow checks (required for " \ 2432 "proper StackOverflow handling; disable only to measure cost " \ 2433 "of stackbanging)") \ 2434 \ 2435 develop(bool, UseStrictFP, true, \ 2436 "use strict fp if modifier strictfp is set") \ 2437 \ 2438 develop(bool, GenerateSynchronizationCode, true, \ 2439 "generate locking/unlocking code for synchronized methods and " \ 2440 "monitors") \ 2441 \ 2442 develop(bool, GenerateRangeChecks, true, \ 2443 "Generate range checks for array accesses") \ 2444 \ 2445 diagnostic_pd(bool, ImplicitNullChecks, \ 2446 "Generate code for implicit null checks") \ 2447 \ 2448 product_pd(bool, TrapBasedNullChecks, \ 2449 "Generate code for null checks that uses a cmp and trap " \ 2450 "instruction raising SIGTRAP. This is only used if an access to" \ 2451 "null (+offset) will not raise a SIGSEGV, i.e.," \ 2452 "ImplicitNullChecks don't work (PPC64).") \ 2453 \ 2454 product(bool, PrintSafepointStatistics, false, \ 2455 "Print statistics about safepoint synchronization") \ 2456 \ 2457 product(intx, PrintSafepointStatisticsCount, 300, \ 2458 "Total number of safepoint statistics collected " \ 2459 "before printing them out") \ 2460 range(1, max_intx) \ 2461 \ 2462 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2463 "Print safepoint statistics only when safepoint takes " \ 2464 "more than PrintSafepointSatisticsTimeout in millis") \ 2465 LP64_ONLY(range(-1, max_intx/MICROUNITS)) \ 2466 NOT_LP64(range(-1, max_intx)) \ 2467 \ 2468 product(bool, Inline, true, \ 2469 "Enable inlining") \ 2470 \ 2471 product(bool, ClipInlining, true, \ 2472 "Clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2473 \ 2474 develop(bool, UseCHA, true, \ 2475 "Enable CHA") \ 2476 \ 2477 product(bool, UseTypeProfile, true, \ 2478 "Check interpreter profile for historically monomorphic calls") \ 2479 \ 2480 diagnostic(bool, PrintInlining, false, \ 2481 "Print inlining optimizations") \ 2482 \ 2483 product(bool, UsePopCountInstruction, false, \ 2484 "Use population count instruction") \ 2485 \ 2486 develop(bool, EagerInitialization, false, \ 2487 "Eagerly initialize classes if possible") \ 2488 \ 2489 diagnostic(bool, LogTouchedMethods, false, \ 2490 "Log methods which have been ever touched in runtime") \ 2491 \ 2492 diagnostic(bool, PrintTouchedMethodsAtExit, false, \ 2493 "Print all methods that have been ever touched in runtime") \ 2494 \ 2495 develop(bool, TraceMethodReplacement, false, \ 2496 "Print when methods are replaced do to recompilation") \ 2497 \ 2498 develop(bool, PrintMethodFlushing, false, \ 2499 "Print the nmethods being flushed") \ 2500 \ 2501 diagnostic(bool, PrintMethodFlushingStatistics, false, \ 2502 "print statistics about method flushing") \ 2503 \ 2504 diagnostic(intx, HotMethodDetectionLimit, 100000, \ 2505 "Number of compiled code invocations after which " \ 2506 "the method is considered as hot by the flusher") \ 2507 range(1, max_jint) \ 2508 \ 2509 diagnostic(intx, MinPassesBeforeFlush, 10, \ 2510 "Minimum number of sweeper passes before an nmethod " \ 2511 "can be flushed") \ 2512 range(0, max_intx) \ 2513 \ 2514 product(bool, UseCodeAging, true, \ 2515 "Insert counter to detect warm methods") \ 2516 \ 2517 diagnostic(bool, StressCodeAging, false, \ 2518 "Start with counters compiled in") \ 2519 \ 2520 develop(bool, UseRelocIndex, false, \ 2521 "Use an index to speed random access to relocations") \ 2522 \ 2523 develop(bool, StressCodeBuffers, false, \ 2524 "Exercise code buffer expansion and other rare state changes") \ 2525 \ 2526 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2527 "Generate extra debugging information for non-safepoints in " \ 2528 "nmethods") \ 2529 \ 2530 product(bool, PrintVMOptions, false, \ 2531 "Print flags that appeared on the command line") \ 2532 \ 2533 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2534 "Ignore unrecognized VM options") \ 2535 \ 2536 product(bool, PrintCommandLineFlags, false, \ 2537 "Print flags specified on command line or set by ergonomics") \ 2538 \ 2539 product(bool, PrintFlagsInitial, false, \ 2540 "Print all VM flags before argument processing and exit VM") \ 2541 \ 2542 product(bool, PrintFlagsFinal, false, \ 2543 "Print all VM flags after argument and ergonomic processing") \ 2544 \ 2545 notproduct(bool, PrintFlagsWithComments, false, \ 2546 "Print all VM flags with default values and descriptions and " \ 2547 "exit") \ 2548 \ 2549 product(bool, PrintFlagsRanges, false, \ 2550 "Print VM flags and their ranges and exit VM") \ 2551 \ 2552 diagnostic(bool, SerializeVMOutput, true, \ 2553 "Use a mutex to serialize output to tty and LogFile") \ 2554 \ 2555 diagnostic(bool, DisplayVMOutput, true, \ 2556 "Display all VM output on the tty, independently of LogVMOutput") \ 2557 \ 2558 diagnostic(bool, LogVMOutput, false, \ 2559 "Save VM output to LogFile") \ 2560 \ 2561 diagnostic(ccstr, LogFile, NULL, \ 2562 "If LogVMOutput or LogCompilation is on, save VM output to " \ 2563 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\ 2564 \ 2565 product(ccstr, ErrorFile, NULL, \ 2566 "If an error occurs, save the error data to this file " \ 2567 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2568 \ 2569 product(bool, DisplayVMOutputToStderr, false, \ 2570 "If DisplayVMOutput is true, display all VM output to stderr") \ 2571 \ 2572 product(bool, DisplayVMOutputToStdout, false, \ 2573 "If DisplayVMOutput is true, display all VM output to stdout") \ 2574 \ 2575 product(bool, UseHeavyMonitors, false, \ 2576 "use heavyweight instead of lightweight Java monitors") \ 2577 \ 2578 product(bool, PrintStringTableStatistics, false, \ 2579 "print statistics about the StringTable and SymbolTable") \ 2580 \ 2581 diagnostic(bool, VerifyStringTableAtExit, false, \ 2582 "verify StringTable contents at exit") \ 2583 \ 2584 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2585 "print histogram of the symbol table") \ 2586 \ 2587 notproduct(bool, ExitVMOnVerifyError, false, \ 2588 "standard exit from VM if bytecode verify error " \ 2589 "(only in debug mode)") \ 2590 \ 2591 diagnostic(ccstr, AbortVMOnException, NULL, \ 2592 "Call fatal if this exception is thrown. Example: " \ 2593 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2594 \ 2595 diagnostic(ccstr, AbortVMOnExceptionMessage, NULL, \ 2596 "Call fatal if the exception pointed by AbortVMOnException " \ 2597 "has this message") \ 2598 \ 2599 develop(bool, DebugVtables, false, \ 2600 "add debugging code to vtable dispatch") \ 2601 \ 2602 notproduct(bool, PrintVtableStats, false, \ 2603 "print vtables stats at end of run") \ 2604 \ 2605 develop(bool, TraceCreateZombies, false, \ 2606 "trace creation of zombie nmethods") \ 2607 \ 2608 notproduct(bool, IgnoreLockingAssertions, false, \ 2609 "disable locking assertions (for speed)") \ 2610 \ 2611 product(bool, RangeCheckElimination, true, \ 2612 "Eliminate range checks") \ 2613 \ 2614 develop_pd(bool, UncommonNullCast, \ 2615 "track occurrences of null in casts; adjust compiler tactics") \ 2616 \ 2617 develop(bool, TypeProfileCasts, true, \ 2618 "treat casts like calls for purposes of type profiling") \ 2619 \ 2620 develop(bool, DelayCompilationDuringStartup, true, \ 2621 "Delay invoking the compiler until main application class is " \ 2622 "loaded") \ 2623 \ 2624 develop(bool, CompileTheWorld, false, \ 2625 "Compile all methods in all classes in bootstrap class path " \ 2626 "(stress test)") \ 2627 \ 2628 develop(bool, CompileTheWorldPreloadClasses, true, \ 2629 "Preload all classes used by a class before start loading") \ 2630 \ 2631 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 2632 "Force a safepoint every n compiles so sweeper can keep up") \ 2633 \ 2634 develop(bool, FillDelaySlots, true, \ 2635 "Fill delay slots (on SPARC only)") \ 2636 \ 2637 develop(bool, TimeLivenessAnalysis, false, \ 2638 "Time computation of bytecode liveness analysis") \ 2639 \ 2640 develop(bool, TraceLivenessGen, false, \ 2641 "Trace the generation of liveness analysis information") \ 2642 \ 2643 notproduct(bool, TraceLivenessQuery, false, \ 2644 "Trace queries of liveness analysis information") \ 2645 \ 2646 notproduct(bool, CollectIndexSetStatistics, false, \ 2647 "Collect information about IndexSets") \ 2648 \ 2649 develop(bool, UseLoopSafepoints, true, \ 2650 "Generate Safepoint nodes in every loop") \ 2651 \ 2652 develop(intx, FastAllocateSizeLimit, 128*K, \ 2653 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2654 "Inline allocations larger than this in doublewords must go slow")\ 2655 \ 2656 product(bool, AggressiveOpts, false, \ 2657 "Enable aggressive optimizations - see arguments.cpp") \ 2658 \ 2659 product_pd(bool, CompactStrings, \ 2660 "Enable Strings to use single byte chars in backing store") \ 2661 \ 2662 product_pd(uintx, TypeProfileLevel, \ 2663 "=XYZ, with Z: Type profiling of arguments at call; " \ 2664 "Y: Type profiling of return value at call; " \ 2665 "X: Type profiling of parameters to methods; " \ 2666 "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \ 2667 constraint(TypeProfileLevelConstraintFunc, AfterErgo) \ 2668 \ 2669 product(intx, TypeProfileArgsLimit, 2, \ 2670 "max number of call arguments to consider for type profiling") \ 2671 range(0, 16) \ 2672 \ 2673 product(intx, TypeProfileParmsLimit, 2, \ 2674 "max number of incoming parameters to consider for type profiling"\ 2675 ", -1 for all") \ 2676 range(-1, 64) \ 2677 \ 2678 /* statistics */ \ 2679 develop(bool, CountCompiledCalls, false, \ 2680 "Count method invocations") \ 2681 \ 2682 notproduct(bool, CountRuntimeCalls, false, \ 2683 "Count VM runtime calls") \ 2684 \ 2685 develop(bool, CountJNICalls, false, \ 2686 "Count jni method invocations") \ 2687 \ 2688 notproduct(bool, CountJVMCalls, false, \ 2689 "Count jvm method invocations") \ 2690 \ 2691 notproduct(bool, CountRemovableExceptions, false, \ 2692 "Count exceptions that could be replaced by branches due to " \ 2693 "inlining") \ 2694 \ 2695 notproduct(bool, ICMissHistogram, false, \ 2696 "Produce histogram of IC misses") \ 2697 \ 2698 /* interpreter */ \ 2699 product_pd(bool, RewriteBytecodes, \ 2700 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2701 \ 2702 product_pd(bool, RewriteFrequentPairs, \ 2703 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2704 \ 2705 diagnostic(bool, PrintInterpreter, false, \ 2706 "Print the generated interpreter code") \ 2707 \ 2708 product(bool, UseInterpreter, true, \ 2709 "Use interpreter for non-compiled methods") \ 2710 \ 2711 develop(bool, UseFastSignatureHandlers, true, \ 2712 "Use fast signature handlers for native calls") \ 2713 \ 2714 product(bool, UseLoopCounter, true, \ 2715 "Increment invocation counter on backward branch") \ 2716 \ 2717 product_pd(bool, UseOnStackReplacement, \ 2718 "Use on stack replacement, calls runtime if invoc. counter " \ 2719 "overflows in loop") \ 2720 \ 2721 notproduct(bool, TraceOnStackReplacement, false, \ 2722 "Trace on stack replacement") \ 2723 \ 2724 product_pd(bool, PreferInterpreterNativeStubs, \ 2725 "Use always interpreter stubs for native methods invoked via " \ 2726 "interpreter") \ 2727 \ 2728 develop(bool, CountBytecodes, false, \ 2729 "Count number of bytecodes executed") \ 2730 \ 2731 develop(bool, PrintBytecodeHistogram, false, \ 2732 "Print histogram of the executed bytecodes") \ 2733 \ 2734 develop(bool, PrintBytecodePairHistogram, false, \ 2735 "Print histogram of the executed bytecode pairs") \ 2736 \ 2737 diagnostic(bool, PrintSignatureHandlers, false, \ 2738 "Print code generated for native method signature handlers") \ 2739 \ 2740 develop(bool, VerifyOops, false, \ 2741 "Do plausibility checks for oops") \ 2742 \ 2743 develop(bool, CheckUnhandledOops, false, \ 2744 "Check for unhandled oops in VM code") \ 2745 \ 2746 develop(bool, VerifyJNIFields, trueInDebug, \ 2747 "Verify jfieldIDs for instance fields") \ 2748 \ 2749 notproduct(bool, VerifyJNIEnvThread, false, \ 2750 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2751 "from JNI") \ 2752 \ 2753 develop(bool, VerifyFPU, false, \ 2754 "Verify FPU state (check for NaN's, etc.)") \ 2755 \ 2756 develop(bool, VerifyThread, false, \ 2757 "Watch the thread register for corruption (SPARC only)") \ 2758 \ 2759 develop(bool, VerifyActivationFrameSize, false, \ 2760 "Verify that activation frame didn't become smaller than its " \ 2761 "minimal size") \ 2762 \ 2763 develop(bool, TraceFrequencyInlining, false, \ 2764 "Trace frequency based inlining") \ 2765 \ 2766 develop_pd(bool, InlineIntrinsics, \ 2767 "Inline intrinsics that can be statically resolved") \ 2768 \ 2769 product_pd(bool, ProfileInterpreter, \ 2770 "Profile at the bytecode level during interpretation") \ 2771 \ 2772 develop(bool, TraceProfileInterpreter, false, \ 2773 "Trace profiling at the bytecode level during interpretation. " \ 2774 "This outputs the profiling information collected to improve " \ 2775 "jit compilation.") \ 2776 \ 2777 develop_pd(bool, ProfileTraps, \ 2778 "Profile deoptimization traps at the bytecode level") \ 2779 \ 2780 product(intx, ProfileMaturityPercentage, 20, \ 2781 "number of method invocations/branches (expressed as % of " \ 2782 "CompileThreshold) before using the method's profile") \ 2783 range(0, 100) \ 2784 \ 2785 diagnostic(bool, PrintMethodData, false, \ 2786 "Print the results of +ProfileInterpreter at end of run") \ 2787 \ 2788 develop(bool, VerifyDataPointer, trueInDebug, \ 2789 "Verify the method data pointer during interpreter profiling") \ 2790 \ 2791 develop(bool, VerifyCompiledCode, false, \ 2792 "Include miscellaneous runtime verifications in nmethod code; " \ 2793 "default off because it disturbs nmethod size heuristics") \ 2794 \ 2795 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 2796 "Manually make GC thread crash then dump java stack trace; " \ 2797 "Test only") \ 2798 \ 2799 /* compilation */ \ 2800 product(bool, UseCompiler, true, \ 2801 "Use Just-In-Time compilation") \ 2802 \ 2803 develop(bool, TraceCompilationPolicy, false, \ 2804 "Trace compilation policy") \ 2805 \ 2806 develop(bool, TimeCompilationPolicy, false, \ 2807 "Time the compilation policy") \ 2808 \ 2809 product(bool, UseCounterDecay, true, \ 2810 "Adjust recompilation counters") \ 2811 \ 2812 develop(intx, CounterHalfLifeTime, 30, \ 2813 "Half-life time of invocation counters (in seconds)") \ 2814 \ 2815 develop(intx, CounterDecayMinIntervalLength, 500, \ 2816 "The minimum interval (in milliseconds) between invocation of " \ 2817 "CounterDecay") \ 2818 \ 2819 product(bool, AlwaysCompileLoopMethods, false, \ 2820 "When using recompilation, never interpret methods " \ 2821 "containing loops") \ 2822 \ 2823 product(bool, DontCompileHugeMethods, true, \ 2824 "Do not compile methods > HugeMethodLimit") \ 2825 \ 2826 /* Bytecode escape analysis estimation. */ \ 2827 product(bool, EstimateArgEscape, true, \ 2828 "Analyze bytecodes to estimate escape state of arguments") \ 2829 \ 2830 product(intx, BCEATraceLevel, 0, \ 2831 "How much tracing to do of bytecode escape analysis estimates " \ 2832 "(0-3)") \ 2833 range(0, 3) \ 2834 \ 2835 product(intx, MaxBCEAEstimateLevel, 5, \ 2836 "Maximum number of nested calls that are analyzed by BC EA") \ 2837 range(0, max_jint) \ 2838 \ 2839 product(intx, MaxBCEAEstimateSize, 150, \ 2840 "Maximum bytecode size of a method to be analyzed by BC EA") \ 2841 range(0, max_jint) \ 2842 \ 2843 product(intx, AllocatePrefetchStyle, 1, \ 2844 "0 = no prefetch, " \ 2845 "1 = generate prefetch instructions for each allocation, " \ 2846 "2 = use TLAB watermark to gate allocation prefetch, " \ 2847 "3 = generate one prefetch instruction per cache line") \ 2848 range(0, 3) \ 2849 \ 2850 product(intx, AllocatePrefetchDistance, -1, \ 2851 "Distance to prefetch ahead of allocation pointer. " \ 2852 "-1: use system-specific value (automatically determined") \ 2853 constraint(AllocatePrefetchDistanceConstraintFunc, AfterMemoryInit)\ 2854 \ 2855 product(intx, AllocatePrefetchLines, 3, \ 2856 "Number of lines to prefetch ahead of array allocation pointer") \ 2857 range(1, 64) \ 2858 \ 2859 product(intx, AllocateInstancePrefetchLines, 1, \ 2860 "Number of lines to prefetch ahead of instance allocation " \ 2861 "pointer") \ 2862 range(1, 64) \ 2863 \ 2864 product(intx, AllocatePrefetchStepSize, 16, \ 2865 "Step size in bytes of sequential prefetch instructions") \ 2866 range(1, 512) \ 2867 constraint(AllocatePrefetchStepSizeConstraintFunc,AfterMemoryInit)\ 2868 \ 2869 product(intx, AllocatePrefetchInstr, 0, \ 2870 "Select instruction to prefetch ahead of allocation pointer") \ 2871 constraint(AllocatePrefetchInstrConstraintFunc, AfterMemoryInit) \ 2872 \ 2873 /* deoptimization */ \ 2874 develop(bool, TraceDeoptimization, false, \ 2875 "Trace deoptimization") \ 2876 \ 2877 develop(bool, PrintDeoptimizationDetails, false, \ 2878 "Print more information about deoptimization") \ 2879 \ 2880 develop(bool, DebugDeoptimization, false, \ 2881 "Tracing various information while debugging deoptimization") \ 2882 \ 2883 product(intx, SelfDestructTimer, 0, \ 2884 "Will cause VM to terminate after a given time (in minutes) " \ 2885 "(0 means off)") \ 2886 range(0, max_intx) \ 2887 \ 2888 product(intx, MaxJavaStackTraceDepth, 1024, \ 2889 "The maximum number of lines in the stack trace for Java " \ 2890 "exceptions (0 means all)") \ 2891 range(0, max_jint/2) \ 2892 \ 2893 /* notice: the max range value here is max_jint, not max_intx */ \ 2894 /* because of overflow issue */ \ 2895 diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 2896 "Guarantee a safepoint (at least) every so many milliseconds " \ 2897 "(0 means none)") \ 2898 range(0, max_jint) \ 2899 \ 2900 product(intx, SafepointTimeoutDelay, 10000, \ 2901 "Delay in milliseconds for option SafepointTimeout") \ 2902 LP64_ONLY(range(0, max_intx/MICROUNITS)) \ 2903 NOT_LP64(range(0, max_intx)) \ 2904 \ 2905 product(intx, NmethodSweepActivity, 10, \ 2906 "Removes cold nmethods from code cache if > 0. Higher values " \ 2907 "result in more aggressive sweeping") \ 2908 range(0, 2000) \ 2909 \ 2910 notproduct(bool, LogSweeper, false, \ 2911 "Keep a ring buffer of sweeper activity") \ 2912 \ 2913 notproduct(intx, SweeperLogEntries, 1024, \ 2914 "Number of records in the ring buffer of sweeper activity") \ 2915 \ 2916 notproduct(intx, MemProfilingInterval, 500, \ 2917 "Time between each invocation of the MemProfiler") \ 2918 \ 2919 develop(intx, MallocCatchPtr, -1, \ 2920 "Hit breakpoint when mallocing/freeing this pointer") \ 2921 \ 2922 notproduct(ccstrlist, SuppressErrorAt, "", \ 2923 "List of assertions (file:line) to muzzle") \ 2924 \ 2925 develop(intx, StackPrintLimit, 100, \ 2926 "number of stack frames to print in VM-level stack dump") \ 2927 \ 2928 notproduct(intx, MaxElementPrintSize, 256, \ 2929 "maximum number of elements to print") \ 2930 \ 2931 notproduct(intx, MaxSubklassPrintSize, 4, \ 2932 "maximum number of subklasses to print when printing klass") \ 2933 \ 2934 product(intx, MaxInlineLevel, 9, \ 2935 "maximum number of nested calls that are inlined") \ 2936 range(0, max_jint) \ 2937 \ 2938 product(intx, MaxRecursiveInlineLevel, 1, \ 2939 "maximum number of nested recursive calls that are inlined") \ 2940 range(0, max_jint) \ 2941 \ 2942 develop(intx, MaxForceInlineLevel, 100, \ 2943 "maximum number of nested calls that are forced for inlining " \ 2944 "(using CompileCommand or marked w/ @ForceInline)") \ 2945 range(0, max_jint) \ 2946 \ 2947 product_pd(intx, InlineSmallCode, \ 2948 "Only inline already compiled methods if their code size is " \ 2949 "less than this") \ 2950 range(0, max_jint) \ 2951 \ 2952 product(intx, MaxInlineSize, 35, \ 2953 "The maximum bytecode size of a method to be inlined") \ 2954 range(0, max_jint) \ 2955 \ 2956 product_pd(intx, FreqInlineSize, \ 2957 "The maximum bytecode size of a frequent method to be inlined") \ 2958 range(0, max_jint) \ 2959 \ 2960 product(intx, MaxTrivialSize, 6, \ 2961 "The maximum bytecode size of a trivial method to be inlined") \ 2962 range(0, max_jint) \ 2963 \ 2964 product(intx, MinInliningThreshold, 250, \ 2965 "The minimum invocation count a method needs to have to be " \ 2966 "inlined") \ 2967 range(0, max_jint) \ 2968 \ 2969 develop(intx, MethodHistogramCutoff, 100, \ 2970 "The cutoff value for method invocation histogram (+CountCalls)") \ 2971 \ 2972 diagnostic(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2973 "Number of interpreted methods to show in profile") \ 2974 \ 2975 diagnostic(intx, ProfilerNumberOfCompiledMethods, 25, \ 2976 "Number of compiled methods to show in profile") \ 2977 \ 2978 diagnostic(intx, ProfilerNumberOfStubMethods, 25, \ 2979 "Number of stub methods to show in profile") \ 2980 \ 2981 diagnostic(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2982 "Number of runtime stub nodes to show in profile") \ 2983 \ 2984 product(intx, ProfileIntervalsTicks, 100, \ 2985 "Number of ticks between printing of interval profile " \ 2986 "(+ProfileIntervals)") \ 2987 range(0, max_intx) \ 2988 \ 2989 notproduct(intx, ScavengeALotInterval, 1, \ 2990 "Interval between which scavenge will occur with +ScavengeALot") \ 2991 \ 2992 notproduct(intx, FullGCALotInterval, 1, \ 2993 "Interval between which full gc will occur with +FullGCALot") \ 2994 \ 2995 notproduct(intx, FullGCALotStart, 0, \ 2996 "For which invocation to start FullGCAlot") \ 2997 \ 2998 notproduct(intx, FullGCALotDummies, 32*K, \ 2999 "Dummy object allocated with +FullGCALot, forcing all objects " \ 3000 "to move") \ 3001 \ 3002 develop(intx, DontYieldALotInterval, 10, \ 3003 "Interval between which yields will be dropped (milliseconds)") \ 3004 \ 3005 develop(intx, MinSleepInterval, 1, \ 3006 "Minimum sleep() interval (milliseconds) when " \ 3007 "ConvertSleepToYield is off (used for Solaris)") \ 3008 \ 3009 develop(intx, ProfilerPCTickThreshold, 15, \ 3010 "Number of ticks in a PC buckets to be a hotspot") \ 3011 \ 3012 notproduct(intx, DeoptimizeALotInterval, 5, \ 3013 "Number of exits until DeoptimizeALot kicks in") \ 3014 \ 3015 notproduct(intx, ZombieALotInterval, 5, \ 3016 "Number of exits until ZombieALot kicks in") \ 3017 \ 3018 diagnostic(uintx, MallocMaxTestWords, 0, \ 3019 "If non-zero, maximum number of words that malloc/realloc can " \ 3020 "allocate (for testing only)") \ 3021 range(0, max_uintx) \ 3022 \ 3023 product(intx, TypeProfileWidth, 2, \ 3024 "Number of receiver types to record in call/cast profile") \ 3025 range(0, 8) \ 3026 \ 3027 develop(intx, BciProfileWidth, 2, \ 3028 "Number of return bci's to record in ret profile") \ 3029 \ 3030 product(intx, PerMethodRecompilationCutoff, 400, \ 3031 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 3032 range(-1, max_intx) \ 3033 \ 3034 product(intx, PerBytecodeRecompilationCutoff, 200, \ 3035 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 3036 range(-1, max_intx) \ 3037 \ 3038 product(intx, PerMethodTrapLimit, 100, \ 3039 "Limit on traps (of one kind) in a method (includes inlines)") \ 3040 range(0, max_jint) \ 3041 \ 3042 experimental(intx, PerMethodSpecTrapLimit, 5000, \ 3043 "Limit on speculative traps (of one kind) in a method " \ 3044 "(includes inlines)") \ 3045 range(0, max_jint) \ 3046 \ 3047 product(intx, PerBytecodeTrapLimit, 4, \ 3048 "Limit on traps (of one kind) at a particular BCI") \ 3049 range(0, max_jint) \ 3050 \ 3051 experimental(intx, SpecTrapLimitExtraEntries, 3, \ 3052 "Extra method data trap entries for speculation") \ 3053 \ 3054 develop(intx, InlineFrequencyRatio, 20, \ 3055 "Ratio of call site execution to caller method invocation") \ 3056 range(0, max_jint) \ 3057 \ 3058 diagnostic_pd(intx, InlineFrequencyCount, \ 3059 "Count of call site execution necessary to trigger frequent " \ 3060 "inlining") \ 3061 range(0, max_jint) \ 3062 \ 3063 develop(intx, InlineThrowCount, 50, \ 3064 "Force inlining of interpreted methods that throw this often") \ 3065 range(0, max_jint) \ 3066 \ 3067 develop(intx, InlineThrowMaxSize, 200, \ 3068 "Force inlining of throwing methods smaller than this") \ 3069 range(0, max_jint) \ 3070 \ 3071 develop(intx, ProfilerNodeSize, 1024, \ 3072 "Size in K to allocate for the Profile Nodes of each thread") \ 3073 range(0, 1024) \ 3074 \ 3075 /* gc parameters */ \ 3076 product(size_t, InitialHeapSize, 0, \ 3077 "Initial heap size (in bytes); zero means use ergonomics") \ 3078 constraint(InitialHeapSizeConstraintFunc,AfterErgo) \ 3079 \ 3080 product(size_t, MaxHeapSize, ScaleForWordSize(96*M), \ 3081 "Maximum heap size (in bytes)") \ 3082 constraint(MaxHeapSizeConstraintFunc,AfterErgo) \ 3083 \ 3084 product(size_t, OldSize, ScaleForWordSize(4*M), \ 3085 "Initial tenured generation size (in bytes)") \ 3086 range(0, max_uintx) \ 3087 \ 3088 product(size_t, NewSize, ScaleForWordSize(1*M), \ 3089 "Initial new generation size (in bytes)") \ 3090 constraint(NewSizeConstraintFunc,AfterErgo) \ 3091 \ 3092 product(size_t, MaxNewSize, max_uintx, \ 3093 "Maximum new generation size (in bytes), max_uintx means set " \ 3094 "ergonomically") \ 3095 range(0, max_uintx) \ 3096 \ 3097 product_pd(size_t, HeapBaseMinAddress, \ 3098 "OS specific low limit for heap base address") \ 3099 constraint(HeapBaseMinAddressConstraintFunc,AfterErgo) \ 3100 \ 3101 product(size_t, PretenureSizeThreshold, 0, \ 3102 "Maximum size in bytes of objects allocated in DefNew " \ 3103 "generation; zero means no maximum") \ 3104 range(0, max_uintx) \ 3105 \ 3106 product(size_t, MinTLABSize, 2*K, \ 3107 "Minimum allowed TLAB size (in bytes)") \ 3108 range(1, max_uintx/2) \ 3109 constraint(MinTLABSizeConstraintFunc,AfterMemoryInit) \ 3110 \ 3111 product(size_t, TLABSize, 0, \ 3112 "Starting TLAB size (in bytes); zero means set ergonomically") \ 3113 constraint(TLABSizeConstraintFunc,AfterMemoryInit) \ 3114 \ 3115 product(size_t, YoungPLABSize, 4096, \ 3116 "Size of young gen promotion LAB's (in HeapWords)") \ 3117 constraint(YoungPLABSizeConstraintFunc,AfterMemoryInit) \ 3118 \ 3119 product(size_t, OldPLABSize, 1024, \ 3120 "Size of old gen promotion LAB's (in HeapWords), or Number " \ 3121 "of blocks to attempt to claim when refilling CMS LAB's") \ 3122 constraint(OldPLABSizeConstraintFunc,AfterMemoryInit) \ 3123 \ 3124 product(uintx, TLABAllocationWeight, 35, \ 3125 "Allocation averaging weight") \ 3126 range(0, 100) \ 3127 \ 3128 /* Limit the lower bound of this flag to 1 as it is used */ \ 3129 /* in a division expression. */ \ 3130 product(uintx, TLABWasteTargetPercent, 1, \ 3131 "Percentage of Eden that can be wasted") \ 3132 range(1, 100) \ 3133 \ 3134 product(uintx, TLABRefillWasteFraction, 64, \ 3135 "Maximum TLAB waste at a refill (internal fragmentation)") \ 3136 range(1, max_juint) \ 3137 \ 3138 product(uintx, TLABWasteIncrement, 4, \ 3139 "Increment allowed waste at slow allocation") \ 3140 range(0, max_jint) \ 3141 constraint(TLABWasteIncrementConstraintFunc,AfterMemoryInit) \ 3142 \ 3143 product(uintx, SurvivorRatio, 8, \ 3144 "Ratio of eden/survivor space size") \ 3145 range(1, max_uintx-2) \ 3146 constraint(SurvivorRatioConstraintFunc,AfterMemoryInit) \ 3147 \ 3148 product(uintx, NewRatio, 2, \ 3149 "Ratio of old/new generation sizes") \ 3150 range(0, max_uintx-1) \ 3151 \ 3152 product_pd(size_t, NewSizeThreadIncrease, \ 3153 "Additional size added to desired new generation size per " \ 3154 "non-daemon thread (in bytes)") \ 3155 range(0, max_uintx) \ 3156 \ 3157 product_pd(size_t, MetaspaceSize, \ 3158 "Initial threshold (in bytes) at which a garbage collection " \ 3159 "is done to reduce Metaspace usage") \ 3160 constraint(MetaspaceSizeConstraintFunc,AfterErgo) \ 3161 \ 3162 product(size_t, MaxMetaspaceSize, max_uintx, \ 3163 "Maximum size of Metaspaces (in bytes)") \ 3164 constraint(MaxMetaspaceSizeConstraintFunc,AfterErgo) \ 3165 \ 3166 product(size_t, CompressedClassSpaceSize, 1*G, \ 3167 "Maximum size of class area in Metaspace when compressed " \ 3168 "class pointers are used") \ 3169 range(1*M, 3*G) \ 3170 \ 3171 manageable(uintx, MinHeapFreeRatio, 40, \ 3172 "The minimum percentage of heap free after GC to avoid expansion."\ 3173 " For most GCs this applies to the old generation. In G1 and" \ 3174 " ParallelGC it applies to the whole heap.") \ 3175 range(0, 100) \ 3176 constraint(MinHeapFreeRatioConstraintFunc,AfterErgo) \ 3177 \ 3178 manageable(uintx, MaxHeapFreeRatio, 70, \ 3179 "The maximum percentage of heap free after GC to avoid shrinking."\ 3180 " For most GCs this applies to the old generation. In G1 and" \ 3181 " ParallelGC it applies to the whole heap.") \ 3182 range(0, 100) \ 3183 constraint(MaxHeapFreeRatioConstraintFunc,AfterErgo) \ 3184 \ 3185 product(bool, ShrinkHeapInSteps, true, \ 3186 "When disabled, informs the GC to shrink the java heap directly" \ 3187 " to the target size at the next full GC rather than requiring" \ 3188 " smaller steps during multiple full GCs.") \ 3189 \ 3190 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 3191 "Number of milliseconds per MB of free space in the heap") \ 3192 range(0, max_intx) \ 3193 constraint(SoftRefLRUPolicyMSPerMBConstraintFunc,AfterMemoryInit) \ 3194 \ 3195 product(size_t, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 3196 "The minimum change in heap space due to GC (in bytes)") \ 3197 range(0, max_uintx) \ 3198 \ 3199 product(size_t, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 3200 "The minimum expansion of Metaspace (in bytes)") \ 3201 range(0, max_uintx) \ 3202 \ 3203 product(uintx, MaxMetaspaceFreeRatio, 70, \ 3204 "The maximum percentage of Metaspace free after GC to avoid " \ 3205 "shrinking") \ 3206 range(0, 100) \ 3207 constraint(MaxMetaspaceFreeRatioConstraintFunc,AfterErgo) \ 3208 \ 3209 product(uintx, MinMetaspaceFreeRatio, 40, \ 3210 "The minimum percentage of Metaspace free after GC to avoid " \ 3211 "expansion") \ 3212 range(0, 99) \ 3213 constraint(MinMetaspaceFreeRatioConstraintFunc,AfterErgo) \ 3214 \ 3215 product(size_t, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3216 "The maximum expansion of Metaspace without full GC (in bytes)") \ 3217 range(0, max_uintx) \ 3218 \ 3219 product(uintx, QueuedAllocationWarningCount, 0, \ 3220 "Number of times an allocation that queues behind a GC " \ 3221 "will retry before printing a warning") \ 3222 range(0, max_uintx) \ 3223 \ 3224 diagnostic(uintx, VerifyGCStartAt, 0, \ 3225 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3226 range(0, max_uintx) \ 3227 \ 3228 diagnostic(intx, VerifyGCLevel, 0, \ 3229 "Generation level at which to start +VerifyBefore/AfterGC") \ 3230 range(0, 1) \ 3231 \ 3232 product(uintx, MaxTenuringThreshold, 15, \ 3233 "Maximum value for tenuring threshold") \ 3234 range(0, markOopDesc::max_age + 1) \ 3235 constraint(MaxTenuringThresholdConstraintFunc,AfterErgo) \ 3236 \ 3237 product(uintx, InitialTenuringThreshold, 7, \ 3238 "Initial value for tenuring threshold") \ 3239 range(0, markOopDesc::max_age + 1) \ 3240 constraint(InitialTenuringThresholdConstraintFunc,AfterErgo) \ 3241 \ 3242 product(uintx, TargetSurvivorRatio, 50, \ 3243 "Desired percentage of survivor space used after scavenge") \ 3244 range(0, 100) \ 3245 \ 3246 product(uintx, MarkSweepDeadRatio, 5, \ 3247 "Percentage (0-100) of the old gen allowed as dead wood. " \ 3248 "Serial mark sweep treats this as both the minimum and maximum " \ 3249 "value. " \ 3250 "CMS uses this value only if it falls back to mark sweep. " \ 3251 "Par compact uses a variable scale based on the density of the " \ 3252 "generation and treats this as the maximum value when the heap " \ 3253 "is either completely full or completely empty. Par compact " \ 3254 "also has a smaller default value; see arguments.cpp.") \ 3255 range(0, 100) \ 3256 \ 3257 product(uint, MarkSweepAlwaysCompactCount, 4, \ 3258 "How often should we fully compact the heap (ignoring the dead " \ 3259 "space parameters)") \ 3260 range(1, max_juint) \ 3261 \ 3262 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 3263 "Delay between expansion and allocation (in milliseconds)") \ 3264 \ 3265 develop(uintx, GCWorkerDelayMillis, 0, \ 3266 "Delay in scheduling GC workers (in milliseconds)") \ 3267 \ 3268 product(intx, DeferThrSuspendLoopCount, 4000, \ 3269 "(Unstable) Number of times to iterate in safepoint loop " \ 3270 "before blocking VM threads ") \ 3271 range(-1, max_jint-1) \ 3272 \ 3273 product(intx, DeferPollingPageLoopCount, -1, \ 3274 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 3275 "before changing safepoint polling page to RO ") \ 3276 range(-1, max_jint-1) \ 3277 \ 3278 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 3279 range(0, max_intx) \ 3280 \ 3281 product(bool, PSChunkLargeArrays, true, \ 3282 "Process large arrays in chunks") \ 3283 \ 3284 product(uintx, GCDrainStackTargetSize, 64, \ 3285 "Number of entries we will try to leave on the stack " \ 3286 "during parallel gc") \ 3287 range(0, max_juint) \ 3288 \ 3289 /* stack parameters */ \ 3290 product_pd(intx, StackYellowPages, \ 3291 "Number of yellow zone (recoverable overflows) pages of size " \ 3292 "4KB. If pages are bigger yellow zone is aligned up.") \ 3293 range(MIN_STACK_YELLOW_PAGES, (DEFAULT_STACK_YELLOW_PAGES+5)) \ 3294 \ 3295 product_pd(intx, StackRedPages, \ 3296 "Number of red zone (unrecoverable overflows) pages of size " \ 3297 "4KB. If pages are bigger red zone is aligned up.") \ 3298 range(MIN_STACK_RED_PAGES, (DEFAULT_STACK_RED_PAGES+2)) \ 3299 \ 3300 product_pd(intx, StackReservedPages, \ 3301 "Number of reserved zone (reserved to annotated methods) pages" \ 3302 " of size 4KB. If pages are bigger reserved zone is aligned up.") \ 3303 range(MIN_STACK_RESERVED_PAGES, (DEFAULT_STACK_RESERVED_PAGES+10))\ 3304 \ 3305 product(bool, RestrictReservedStack, true, \ 3306 "Restrict @ReservedStackAccess to trusted classes") \ 3307 \ 3308 /* greater stack shadow pages can't generate instruction to bang stack */ \ 3309 product_pd(intx, StackShadowPages, \ 3310 "Number of shadow zone (for overflow checking) pages of size " \ 3311 "4KB. If pages are bigger shadow zone is aligned up. " \ 3312 "This should exceed the depth of the VM and native call stack.") \ 3313 range(MIN_STACK_SHADOW_PAGES, (DEFAULT_STACK_SHADOW_PAGES+30)) \ 3314 \ 3315 product_pd(intx, ThreadStackSize, \ 3316 "Thread Stack Size (in Kbytes)") \ 3317 range(0, (max_intx-os::vm_page_size())/(1 * K)) \ 3318 \ 3319 product_pd(intx, VMThreadStackSize, \ 3320 "Non-Java Thread Stack Size (in Kbytes)") \ 3321 range(0, max_intx/(1 * K)) \ 3322 \ 3323 product_pd(intx, CompilerThreadStackSize, \ 3324 "Compiler Thread Stack Size (in Kbytes)") \ 3325 range(0, max_intx/(1 * K)) \ 3326 \ 3327 develop_pd(size_t, JVMInvokeMethodSlack, \ 3328 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 3329 \ 3330 /* code cache parameters */ \ 3331 develop_pd(uintx, CodeCacheSegmentSize, \ 3332 "Code cache segment size (in bytes) - smallest unit of " \ 3333 "allocation") \ 3334 range(1, 1024) \ 3335 constraint(CodeCacheSegmentSizeConstraintFunc, AfterErgo) \ 3336 \ 3337 develop_pd(intx, CodeEntryAlignment, \ 3338 "Code entry alignment for generated code (in bytes)") \ 3339 constraint(CodeEntryAlignmentConstraintFunc, AfterErgo) \ 3340 \ 3341 product_pd(intx, OptoLoopAlignment, \ 3342 "Align inner loops to zero relative to this modulus") \ 3343 range(1, 16) \ 3344 constraint(OptoLoopAlignmentConstraintFunc, AfterErgo) \ 3345 \ 3346 product_pd(uintx, InitialCodeCacheSize, \ 3347 "Initial code cache size (in bytes)") \ 3348 range(0, max_uintx) \ 3349 \ 3350 develop_pd(uintx, CodeCacheMinimumUseSpace, \ 3351 "Minimum code cache size (in bytes) required to start VM.") \ 3352 range(0, max_uintx) \ 3353 \ 3354 product(bool, SegmentedCodeCache, false, \ 3355 "Use a segmented code cache") \ 3356 \ 3357 product_pd(uintx, ReservedCodeCacheSize, \ 3358 "Reserved code cache size (in bytes) - maximum code cache size") \ 3359 range(0, max_uintx) \ 3360 \ 3361 product_pd(uintx, NonProfiledCodeHeapSize, \ 3362 "Size of code heap with non-profiled methods (in bytes)") \ 3363 range(0, max_uintx) \ 3364 \ 3365 product_pd(uintx, ProfiledCodeHeapSize, \ 3366 "Size of code heap with profiled methods (in bytes)") \ 3367 range(0, max_uintx) \ 3368 \ 3369 product_pd(uintx, NonNMethodCodeHeapSize, \ 3370 "Size of code heap with non-nmethods (in bytes)") \ 3371 range(0, max_uintx) \ 3372 \ 3373 product_pd(uintx, CodeCacheExpansionSize, \ 3374 "Code cache expansion size (in bytes)") \ 3375 range(0, max_uintx) \ 3376 \ 3377 diagnostic_pd(uintx, CodeCacheMinBlockLength, \ 3378 "Minimum number of segments in a code cache block") \ 3379 range(1, 100) \ 3380 \ 3381 notproduct(bool, ExitOnFullCodeCache, false, \ 3382 "Exit the VM if we fill the code cache") \ 3383 \ 3384 product(bool, UseCodeCacheFlushing, true, \ 3385 "Remove cold/old nmethods from the code cache") \ 3386 \ 3387 product(uintx, StartAggressiveSweepingAt, 10, \ 3388 "Start aggressive sweeping if X[%] of the code cache is free." \ 3389 "Segmented code cache: X[%] of the non-profiled heap." \ 3390 "Non-segmented code cache: X[%] of the total code cache") \ 3391 range(0, 100) \ 3392 \ 3393 /* AOT parameters */ \ 3394 product(bool, UseAOT, AOT_ONLY(true) NOT_AOT(false), \ 3395 "Use AOT compiled files") \ 3396 \ 3397 product(ccstrlist, AOTLibrary, NULL, \ 3398 "AOT library") \ 3399 \ 3400 product(bool, PrintAOT, false, \ 3401 "Print used AOT klasses and methods") \ 3402 \ 3403 notproduct(bool, PrintAOTStatistics, false, \ 3404 "Print AOT statistics") \ 3405 \ 3406 diagnostic(bool, UseAOTStrictLoading, false, \ 3407 "Exit the VM if any of the AOT libraries has invalid config") \ 3408 \ 3409 /* interpreter debugging */ \ 3410 develop(intx, BinarySwitchThreshold, 5, \ 3411 "Minimal number of lookupswitch entries for rewriting to binary " \ 3412 "switch") \ 3413 \ 3414 develop(intx, StopInterpreterAt, 0, \ 3415 "Stop interpreter execution at specified bytecode number") \ 3416 \ 3417 develop(intx, TraceBytecodesAt, 0, \ 3418 "Trace bytecodes starting with specified bytecode number") \ 3419 \ 3420 /* compiler interface */ \ 3421 develop(intx, CIStart, 0, \ 3422 "The id of the first compilation to permit") \ 3423 \ 3424 develop(intx, CIStop, max_jint, \ 3425 "The id of the last compilation to permit") \ 3426 \ 3427 develop(intx, CIStartOSR, 0, \ 3428 "The id of the first osr compilation to permit " \ 3429 "(CICountOSR must be on)") \ 3430 \ 3431 develop(intx, CIStopOSR, max_jint, \ 3432 "The id of the last osr compilation to permit " \ 3433 "(CICountOSR must be on)") \ 3434 \ 3435 develop(intx, CIBreakAtOSR, -1, \ 3436 "The id of osr compilation to break at") \ 3437 \ 3438 develop(intx, CIBreakAt, -1, \ 3439 "The id of compilation to break at") \ 3440 \ 3441 product(ccstrlist, CompileOnly, "", \ 3442 "List of methods (pkg/class.name) to restrict compilation to") \ 3443 \ 3444 product(ccstr, CompileCommandFile, NULL, \ 3445 "Read compiler commands from this file [.hotspot_compiler]") \ 3446 \ 3447 diagnostic(ccstr, CompilerDirectivesFile, NULL, \ 3448 "Read compiler directives from this file") \ 3449 \ 3450 product(ccstrlist, CompileCommand, "", \ 3451 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3452 \ 3453 develop(bool, ReplayCompiles, false, \ 3454 "Enable replay of compilations from ReplayDataFile") \ 3455 \ 3456 product(ccstr, ReplayDataFile, NULL, \ 3457 "File containing compilation replay information" \ 3458 "[default: ./replay_pid%p.log] (%p replaced with pid)") \ 3459 \ 3460 product(ccstr, InlineDataFile, NULL, \ 3461 "File containing inlining replay information" \ 3462 "[default: ./inline_pid%p.log] (%p replaced with pid)") \ 3463 \ 3464 develop(intx, ReplaySuppressInitializers, 2, \ 3465 "Control handling of class initialization during replay: " \ 3466 "0 - don't do anything special; " \ 3467 "1 - treat all class initializers as empty; " \ 3468 "2 - treat class initializers for application classes as empty; " \ 3469 "3 - allow all class initializers to run during bootstrap but " \ 3470 " pretend they are empty after starting replay") \ 3471 range(0, 3) \ 3472 \ 3473 develop(bool, ReplayIgnoreInitErrors, false, \ 3474 "Ignore exceptions thrown during initialization for replay") \ 3475 \ 3476 product(bool, DumpReplayDataOnError, true, \ 3477 "Record replay data for crashing compiler threads") \ 3478 \ 3479 product(bool, CICompilerCountPerCPU, false, \ 3480 "1 compiler thread for log(N CPUs)") \ 3481 \ 3482 develop(intx, CIFireOOMAt, -1, \ 3483 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3484 "(non-negative value throws OOM after this many CI accesses " \ 3485 "in each compile)") \ 3486 notproduct(intx, CICrashAt, -1, \ 3487 "id of compilation to trigger assert in compiler thread for " \ 3488 "the purpose of testing, e.g. generation of replay data") \ 3489 notproduct(bool, CIObjectFactoryVerify, false, \ 3490 "enable potentially expensive verification in ciObjectFactory") \ 3491 \ 3492 /* Priorities */ \ 3493 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3494 \ 3495 product(intx, ThreadPriorityPolicy, 0, \ 3496 "0 : Normal. "\ 3497 " VM chooses priorities that are appropriate for normal "\ 3498 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3499 " to normal native priority. Java priorities below " \ 3500 " NORM_PRIORITY map to lower native priority values. On "\ 3501 " Windows applications are allowed to use higher native "\ 3502 " priorities. However, with ThreadPriorityPolicy=0, VM will "\ 3503 " not use the highest possible native priority, "\ 3504 " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\ 3505 " system threads. On Linux thread priorities are ignored "\ 3506 " because the OS does not support static priority in "\ 3507 " SCHED_OTHER scheduling class which is the only choice for "\ 3508 " non-root, non-realtime applications. "\ 3509 "1 : Aggressive. "\ 3510 " Java thread priorities map over to the entire range of "\ 3511 " native thread priorities. Higher Java thread priorities map "\ 3512 " to higher native thread priorities. This policy should be "\ 3513 " used with care, as sometimes it can cause performance "\ 3514 " degradation in the application and/or the entire system. On "\ 3515 " Linux this policy requires root privilege.") \ 3516 range(0, 1) \ 3517 \ 3518 product(bool, ThreadPriorityVerbose, false, \ 3519 "Print priority changes") \ 3520 \ 3521 product(intx, CompilerThreadPriority, -1, \ 3522 "The native priority at which compiler threads should run " \ 3523 "(-1 means no change)") \ 3524 range(min_jint, max_jint) \ 3525 constraint(CompilerThreadPriorityConstraintFunc, AfterErgo) \ 3526 \ 3527 product(intx, VMThreadPriority, -1, \ 3528 "The native priority at which the VM thread should run " \ 3529 "(-1 means no change)") \ 3530 range(-1, 127) \ 3531 \ 3532 product(bool, CompilerThreadHintNoPreempt, true, \ 3533 "(Solaris only) Give compiler threads an extra quanta") \ 3534 \ 3535 product(bool, VMThreadHintNoPreempt, false, \ 3536 "(Solaris only) Give VM thread an extra quanta") \ 3537 \ 3538 product(intx, JavaPriority1_To_OSPriority, -1, \ 3539 "Map Java priorities to OS priorities") \ 3540 range(-1, 127) \ 3541 \ 3542 product(intx, JavaPriority2_To_OSPriority, -1, \ 3543 "Map Java priorities to OS priorities") \ 3544 range(-1, 127) \ 3545 \ 3546 product(intx, JavaPriority3_To_OSPriority, -1, \ 3547 "Map Java priorities to OS priorities") \ 3548 range(-1, 127) \ 3549 \ 3550 product(intx, JavaPriority4_To_OSPriority, -1, \ 3551 "Map Java priorities to OS priorities") \ 3552 range(-1, 127) \ 3553 \ 3554 product(intx, JavaPriority5_To_OSPriority, -1, \ 3555 "Map Java priorities to OS priorities") \ 3556 range(-1, 127) \ 3557 \ 3558 product(intx, JavaPriority6_To_OSPriority, -1, \ 3559 "Map Java priorities to OS priorities") \ 3560 range(-1, 127) \ 3561 \ 3562 product(intx, JavaPriority7_To_OSPriority, -1, \ 3563 "Map Java priorities to OS priorities") \ 3564 range(-1, 127) \ 3565 \ 3566 product(intx, JavaPriority8_To_OSPriority, -1, \ 3567 "Map Java priorities to OS priorities") \ 3568 range(-1, 127) \ 3569 \ 3570 product(intx, JavaPriority9_To_OSPriority, -1, \ 3571 "Map Java priorities to OS priorities") \ 3572 range(-1, 127) \ 3573 \ 3574 product(intx, JavaPriority10_To_OSPriority,-1, \ 3575 "Map Java priorities to OS priorities") \ 3576 range(-1, 127) \ 3577 \ 3578 experimental(bool, UseCriticalJavaThreadPriority, false, \ 3579 "Java thread priority 10 maps to critical scheduling priority") \ 3580 \ 3581 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 3582 "Compiler thread(s) run at critical scheduling priority") \ 3583 \ 3584 experimental(bool, UseCriticalCMSThreadPriority, false, \ 3585 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 3586 \ 3587 /* compiler debugging */ \ 3588 notproduct(intx, CompileTheWorldStartAt, 1, \ 3589 "First class to consider when using +CompileTheWorld") \ 3590 \ 3591 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3592 "Last class to consider when using +CompileTheWorld") \ 3593 \ 3594 develop(intx, NewCodeParameter, 0, \ 3595 "Testing Only: Create a dedicated integer parameter before " \ 3596 "putback") \ 3597 \ 3598 /* new oopmap storage allocation */ \ 3599 develop(intx, MinOopMapAllocation, 8, \ 3600 "Minimum number of OopMap entries in an OopMapSet") \ 3601 \ 3602 /* Background Compilation */ \ 3603 develop(intx, LongCompileThreshold, 50, \ 3604 "Used with +TraceLongCompiles") \ 3605 \ 3606 /* recompilation */ \ 3607 product_pd(intx, CompileThreshold, \ 3608 "number of interpreted method invocations before (re-)compiling") \ 3609 constraint(CompileThresholdConstraintFunc, AfterErgo) \ 3610 \ 3611 product(double, CompileThresholdScaling, 1.0, \ 3612 "Factor to control when first compilation happens " \ 3613 "(both with and without tiered compilation): " \ 3614 "values greater than 1.0 delay counter overflow, " \ 3615 "values between 0 and 1.0 rush counter overflow, " \ 3616 "value of 1.0 leaves compilation thresholds unchanged " \ 3617 "value of 0.0 is equivalent to -Xint. " \ 3618 "" \ 3619 "Flag can be set as per-method option. " \ 3620 "If a value is specified for a method, compilation thresholds " \ 3621 "for that method are scaled by both the value of the global flag "\ 3622 "and the value of the per-method flag.") \ 3623 range(0.0, DBL_MAX) \ 3624 \ 3625 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 3626 "Interpreter (tier 0) invocation notification frequency") \ 3627 range(0, 30) \ 3628 \ 3629 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 3630 "C1 without MDO (tier 2) invocation notification frequency") \ 3631 range(0, 30) \ 3632 \ 3633 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 3634 "C1 with MDO profiling (tier 3) invocation notification " \ 3635 "frequency") \ 3636 range(0, 30) \ 3637 \ 3638 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 3639 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 3640 range(0, 30) \ 3641 \ 3642 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 3643 "Interpreter (tier 0) invocation notification frequency") \ 3644 range(0, 30) \ 3645 \ 3646 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 3647 "C1 without MDO (tier 2) invocation notification frequency") \ 3648 range(0, 30) \ 3649 \ 3650 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 3651 "C1 with MDO profiling (tier 3) invocation notification " \ 3652 "frequency") \ 3653 range(0, 30) \ 3654 \ 3655 product(intx, Tier2CompileThreshold, 0, \ 3656 "threshold at which tier 2 compilation is invoked") \ 3657 range(0, max_jint) \ 3658 \ 3659 product(intx, Tier2BackEdgeThreshold, 0, \ 3660 "Back edge threshold at which tier 2 compilation is invoked") \ 3661 range(0, max_jint) \ 3662 \ 3663 product(intx, Tier3InvocationThreshold, 200, \ 3664 "Compile if number of method invocations crosses this " \ 3665 "threshold") \ 3666 range(0, max_jint) \ 3667 \ 3668 product(intx, Tier3MinInvocationThreshold, 100, \ 3669 "Minimum invocation to compile at tier 3") \ 3670 range(0, max_jint) \ 3671 \ 3672 product(intx, Tier3CompileThreshold, 2000, \ 3673 "Threshold at which tier 3 compilation is invoked (invocation " \ 3674 "minimum must be satisfied)") \ 3675 range(0, max_jint) \ 3676 \ 3677 product(intx, Tier3BackEdgeThreshold, 60000, \ 3678 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 3679 range(0, max_jint) \ 3680 \ 3681 product(intx, Tier3AOTInvocationThreshold, 10000, \ 3682 "Compile if number of method invocations crosses this " \ 3683 "threshold if coming from AOT") \ 3684 range(0, max_jint) \ 3685 \ 3686 product(intx, Tier3AOTMinInvocationThreshold, 1000, \ 3687 "Minimum invocation to compile at tier 3 if coming from AOT") \ 3688 range(0, max_jint) \ 3689 \ 3690 product(intx, Tier3AOTCompileThreshold, 15000, \ 3691 "Threshold at which tier 3 compilation is invoked (invocation " \ 3692 "minimum must be satisfied) if coming from AOT") \ 3693 range(0, max_jint) \ 3694 \ 3695 product(intx, Tier3AOTBackEdgeThreshold, 120000, \ 3696 "Back edge threshold at which tier 3 OSR compilation is invoked " \ 3697 "if coming from AOT") \ 3698 range(0, max_jint) \ 3699 \ 3700 product(intx, Tier4InvocationThreshold, 5000, \ 3701 "Compile if number of method invocations crosses this " \ 3702 "threshold") \ 3703 range(0, max_jint) \ 3704 \ 3705 product(intx, Tier4MinInvocationThreshold, 600, \ 3706 "Minimum invocation to compile at tier 4") \ 3707 range(0, max_jint) \ 3708 \ 3709 product(intx, Tier4CompileThreshold, 15000, \ 3710 "Threshold at which tier 4 compilation is invoked (invocation " \ 3711 "minimum must be satisfied") \ 3712 range(0, max_jint) \ 3713 \ 3714 product(intx, Tier4BackEdgeThreshold, 40000, \ 3715 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 3716 range(0, max_jint) \ 3717 \ 3718 product(intx, Tier3DelayOn, 5, \ 3719 "If C2 queue size grows over this amount per compiler thread " \ 3720 "stop compiling at tier 3 and start compiling at tier 2") \ 3721 range(0, max_jint) \ 3722 \ 3723 product(intx, Tier3DelayOff, 2, \ 3724 "If C2 queue size is less than this amount per compiler thread " \ 3725 "allow methods compiled at tier 2 transition to tier 3") \ 3726 range(0, max_jint) \ 3727 \ 3728 product(intx, Tier3LoadFeedback, 5, \ 3729 "Tier 3 thresholds will increase twofold when C1 queue size " \ 3730 "reaches this amount per compiler thread") \ 3731 range(0, max_jint) \ 3732 \ 3733 product(intx, Tier4LoadFeedback, 3, \ 3734 "Tier 4 thresholds will increase twofold when C2 queue size " \ 3735 "reaches this amount per compiler thread") \ 3736 range(0, max_jint) \ 3737 \ 3738 product(intx, TieredCompileTaskTimeout, 50, \ 3739 "Kill compile task if method was not used within " \ 3740 "given timeout in milliseconds") \ 3741 range(0, max_intx) \ 3742 \ 3743 product(intx, TieredStopAtLevel, 4, \ 3744 "Stop at given compilation level") \ 3745 range(0, 4) \ 3746 \ 3747 product(intx, Tier0ProfilingStartPercentage, 200, \ 3748 "Start profiling in interpreter if the counters exceed tier 3 " \ 3749 "thresholds by the specified percentage") \ 3750 range(0, max_jint) \ 3751 \ 3752 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ 3753 "Increase the compile threshold for C1 compilation if the code " \ 3754 "cache is filled by the specified percentage") \ 3755 range(0, 99) \ 3756 \ 3757 product(intx, TieredRateUpdateMinTime, 1, \ 3758 "Minimum rate sampling interval (in milliseconds)") \ 3759 range(0, max_intx) \ 3760 \ 3761 product(intx, TieredRateUpdateMaxTime, 25, \ 3762 "Maximum rate sampling interval (in milliseconds)") \ 3763 range(0, max_intx) \ 3764 \ 3765 product_pd(bool, TieredCompilation, \ 3766 "Enable tiered compilation") \ 3767 \ 3768 product(bool, PrintTieredEvents, false, \ 3769 "Print tiered events notifications") \ 3770 \ 3771 product_pd(intx, OnStackReplacePercentage, \ 3772 "NON_TIERED number of method invocations/branches (expressed as " \ 3773 "% of CompileThreshold) before (re-)compiling OSR code") \ 3774 constraint(OnStackReplacePercentageConstraintFunc, AfterErgo) \ 3775 \ 3776 product(intx, InterpreterProfilePercentage, 33, \ 3777 "NON_TIERED number of method invocations/branches (expressed as " \ 3778 "% of CompileThreshold) before profiling in the interpreter") \ 3779 range(0, 100) \ 3780 \ 3781 develop(intx, MaxRecompilationSearchLength, 10, \ 3782 "The maximum number of frames to inspect when searching for " \ 3783 "recompilee") \ 3784 \ 3785 develop(intx, MaxInterpretedSearchLength, 3, \ 3786 "The maximum number of interpreted frames to skip when searching "\ 3787 "for recompilee") \ 3788 \ 3789 develop(intx, DesiredMethodLimit, 8000, \ 3790 "The desired maximum method size (in bytecodes) after inlining") \ 3791 \ 3792 develop(intx, HugeMethodLimit, 8000, \ 3793 "Don't compile methods larger than this if " \ 3794 "+DontCompileHugeMethods") \ 3795 \ 3796 /* New JDK 1.4 reflection implementation */ \ 3797 \ 3798 develop(intx, FastSuperclassLimit, 8, \ 3799 "Depth of hardwired instanceof accelerator array") \ 3800 \ 3801 /* Properties for Java libraries */ \ 3802 \ 3803 product(uint64_t, MaxDirectMemorySize, 0, \ 3804 "Maximum total size of NIO direct-buffer allocations") \ 3805 range(0, max_jlong) \ 3806 \ 3807 /* Flags used for temporary code during development */ \ 3808 \ 3809 diagnostic(bool, UseNewCode, false, \ 3810 "Testing Only: Use the new version while testing") \ 3811 \ 3812 diagnostic(bool, UseNewCode2, false, \ 3813 "Testing Only: Use the new version while testing") \ 3814 \ 3815 diagnostic(bool, UseNewCode3, false, \ 3816 "Testing Only: Use the new version while testing") \ 3817 \ 3818 /* flags for performance data collection */ \ 3819 \ 3820 product(bool, UsePerfData, true, \ 3821 "Flag to disable jvmstat instrumentation for performance testing "\ 3822 "and problem isolation purposes") \ 3823 \ 3824 product(bool, PerfDataSaveToFile, false, \ 3825 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3826 \ 3827 product(ccstr, PerfDataSaveFile, NULL, \ 3828 "Save PerfData memory to the specified absolute pathname. " \ 3829 "The string %p in the file name (if present) " \ 3830 "will be replaced by pid") \ 3831 \ 3832 product(intx, PerfDataSamplingInterval, 50, \ 3833 "Data sampling interval (in milliseconds)") \ 3834 range(PeriodicTask::min_interval, max_jint) \ 3835 constraint(PerfDataSamplingIntervalFunc, AfterErgo) \ 3836 \ 3837 develop(bool, PerfTraceDataCreation, false, \ 3838 "Trace creation of Performance Data Entries") \ 3839 \ 3840 develop(bool, PerfTraceMemOps, false, \ 3841 "Trace PerfMemory create/attach/detach calls") \ 3842 \ 3843 product(bool, PerfDisableSharedMem, false, \ 3844 "Store performance data in standard memory") \ 3845 \ 3846 product(intx, PerfDataMemorySize, 32*K, \ 3847 "Size of performance data memory region. Will be rounded " \ 3848 "up to a multiple of the native os page size.") \ 3849 range(128, 32*64*K) \ 3850 \ 3851 product(intx, PerfMaxStringConstLength, 1024, \ 3852 "Maximum PerfStringConstant string length before truncation") \ 3853 range(32, 32*K) \ 3854 \ 3855 product(bool, PerfAllowAtExitRegistration, false, \ 3856 "Allow registration of atexit() methods") \ 3857 \ 3858 product(bool, PerfBypassFileSystemCheck, false, \ 3859 "Bypass Win32 file system criteria checks (Windows Only)") \ 3860 \ 3861 product(intx, UnguardOnExecutionViolation, 0, \ 3862 "Unguard page and retry on no-execute fault (Win32 only) " \ 3863 "0=off, 1=conservative, 2=aggressive") \ 3864 range(0, 2) \ 3865 \ 3866 /* Serviceability Support */ \ 3867 \ 3868 product(bool, ManagementServer, false, \ 3869 "Create JMX Management Server") \ 3870 \ 3871 product(bool, DisableAttachMechanism, false, \ 3872 "Disable mechanism that allows tools to attach to this VM") \ 3873 \ 3874 product(bool, StartAttachListener, false, \ 3875 "Always start Attach Listener at VM startup") \ 3876 \ 3877 manageable(bool, PrintConcurrentLocks, false, \ 3878 "Print java.util.concurrent locks in thread dump") \ 3879 \ 3880 product(bool, TransmitErrorReport, false, \ 3881 "Enable error report transmission on erroneous termination") \ 3882 \ 3883 product(ccstr, ErrorReportServer, NULL, \ 3884 "Override built-in error report server address") \ 3885 \ 3886 /* Shared spaces */ \ 3887 \ 3888 product(bool, UseSharedSpaces, true, \ 3889 "Use shared spaces for metadata") \ 3890 \ 3891 product(bool, VerifySharedSpaces, false, \ 3892 "Verify shared spaces (false for default archive, true for " \ 3893 "archive specified by -XX:SharedArchiveFile)") \ 3894 \ 3895 product(bool, RequireSharedSpaces, false, \ 3896 "Require shared spaces for metadata") \ 3897 \ 3898 product(bool, DumpSharedSpaces, false, \ 3899 "Special mode: JVM reads a class list, loads classes, builds " \ 3900 "shared spaces, and dumps the shared spaces to a file to be " \ 3901 "used in future JVM runs") \ 3902 \ 3903 product(bool, PrintSharedSpaces, false, \ 3904 "Print usage of shared spaces") \ 3905 \ 3906 product(bool, PrintSharedArchiveAndExit, false, \ 3907 "Print shared archive file contents") \ 3908 \ 3909 product(bool, PrintSharedDictionary, false, \ 3910 "If PrintSharedArchiveAndExit is true, also print the shared " \ 3911 "dictionary") \ 3912 \ 3913 product(size_t, SharedReadWriteSize, DEFAULT_SHARED_READ_WRITE_SIZE, \ 3914 "Size of read-write space for metadata (in bytes)") \ 3915 range(MIN_SHARED_READ_WRITE_SIZE, MAX_SHARED_READ_WRITE_SIZE) \ 3916 constraint(SharedReadWriteSizeConstraintFunc,AfterErgo) \ 3917 \ 3918 product(size_t, SharedReadOnlySize, DEFAULT_SHARED_READ_ONLY_SIZE, \ 3919 "Size of read-only space for metadata (in bytes)") \ 3920 range(MIN_SHARED_READ_ONLY_SIZE, MAX_SHARED_READ_ONLY_SIZE) \ 3921 constraint(SharedReadOnlySizeConstraintFunc,AfterErgo) \ 3922 \ 3923 product(size_t, SharedMiscDataSize, DEFAULT_SHARED_MISC_DATA_SIZE, \ 3924 "Size of the shared miscellaneous data area (in bytes)") \ 3925 range(MIN_SHARED_MISC_DATA_SIZE, MAX_SHARED_MISC_DATA_SIZE) \ 3926 constraint(SharedMiscDataSizeConstraintFunc,AfterErgo) \ 3927 \ 3928 product(size_t, SharedMiscCodeSize, DEFAULT_SHARED_MISC_CODE_SIZE, \ 3929 "Size of the shared miscellaneous code area (in bytes)") \ 3930 range(MIN_SHARED_MISC_CODE_SIZE, MAX_SHARED_MISC_CODE_SIZE) \ 3931 constraint(SharedMiscCodeSizeConstraintFunc,AfterErgo) \ 3932 \ 3933 product(size_t, SharedBaseAddress, LP64_ONLY(32*G) \ 3934 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ 3935 "Address to allocate shared memory region for class data") \ 3936 range(0, SIZE_MAX) \ 3937 \ 3938 product(uintx, SharedSymbolTableBucketSize, 4, \ 3939 "Average number of symbols per bucket in shared table") \ 3940 range(2, 246) \ 3941 \ 3942 diagnostic(bool, IgnoreUnverifiableClassesDuringDump, false, \ 3943 "Do not quit -Xshare:dump even if we encounter unverifiable " \ 3944 "classes. Just exclude them from the shared dictionary.") \ 3945 \ 3946 diagnostic(bool, PrintMethodHandleStubs, false, \ 3947 "Print generated stub code for method handles") \ 3948 \ 3949 develop(bool, TraceMethodHandles, false, \ 3950 "trace internal method handle operations") \ 3951 \ 3952 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 3953 "perform extra checks when constructing method handles") \ 3954 \ 3955 diagnostic(bool, ShowHiddenFrames, false, \ 3956 "show method handle implementation frames (usually hidden)") \ 3957 \ 3958 experimental(bool, TrustFinalNonStaticFields, false, \ 3959 "trust final non-static declarations for constant folding") \ 3960 \ 3961 diagnostic(bool, FoldStableValues, true, \ 3962 "Optimize loads from stable fields (marked w/ @Stable)") \ 3963 \ 3964 develop(bool, TraceInvokeDynamic, false, \ 3965 "trace internal invoke dynamic operations") \ 3966 \ 3967 diagnostic(bool, PauseAtStartup, false, \ 3968 "Causes the VM to pause at startup time and wait for the pause " \ 3969 "file to be removed (default: ./vm.paused.<pid>)") \ 3970 \ 3971 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3972 "The file to create and for whose removal to await when pausing " \ 3973 "at startup. (default: ./vm.paused.<pid>)") \ 3974 \ 3975 diagnostic(bool, PauseAtExit, false, \ 3976 "Pause and wait for keypress on exit if a debugger is attached") \ 3977 \ 3978 product(bool, ExtendedDTraceProbes, false, \ 3979 "Enable performance-impacting dtrace probes") \ 3980 \ 3981 product(bool, DTraceMethodProbes, false, \ 3982 "Enable dtrace probes for method-entry and method-exit") \ 3983 \ 3984 product(bool, DTraceAllocProbes, false, \ 3985 "Enable dtrace probes for object allocation") \ 3986 \ 3987 product(bool, DTraceMonitorProbes, false, \ 3988 "Enable dtrace probes for monitor events") \ 3989 \ 3990 product(bool, RelaxAccessControlCheck, false, \ 3991 "Relax the access control checks in the verifier") \ 3992 \ 3993 product(uintx, StringTableSize, defaultStringTableSize, \ 3994 "Number of buckets in the interned String table") \ 3995 range(minimumStringTableSize, 111*defaultStringTableSize) \ 3996 \ 3997 experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \ 3998 "Number of buckets in the JVM internal Symbol table") \ 3999 range(minimumSymbolTableSize, 111*defaultSymbolTableSize) \ 4000 \ 4001 product(bool, UseStringDeduplication, false, \ 4002 "Use string deduplication") \ 4003 \ 4004 product(uintx, StringDeduplicationAgeThreshold, 3, \ 4005 "A string must reach this age (or be promoted to an old region) " \ 4006 "to be considered for deduplication") \ 4007 range(1, markOopDesc::max_age) \ 4008 \ 4009 diagnostic(bool, StringDeduplicationResizeALot, false, \ 4010 "Force table resize every time the table is scanned") \ 4011 \ 4012 diagnostic(bool, StringDeduplicationRehashALot, false, \ 4013 "Force table rehash every time the table is scanned") \ 4014 \ 4015 diagnostic(bool, WhiteBoxAPI, false, \ 4016 "Enable internal testing APIs") \ 4017 \ 4018 experimental(intx, SurvivorAlignmentInBytes, 0, \ 4019 "Default survivor space alignment in bytes") \ 4020 constraint(SurvivorAlignmentInBytesConstraintFunc,AfterErgo) \ 4021 \ 4022 product(bool , AllowNonVirtualCalls, false, \ 4023 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \ 4024 \ 4025 product(ccstr, DumpLoadedClassList, NULL, \ 4026 "Dump the names all loaded classes, that could be stored into " \ 4027 "the CDS archive, in the specified file") \ 4028 \ 4029 product(ccstr, SharedClassListFile, NULL, \ 4030 "Override the default CDS class list") \ 4031 \ 4032 diagnostic(ccstr, SharedArchiveFile, NULL, \ 4033 "Override the default location of the CDS archive file") \ 4034 \ 4035 product(ccstr, ExtraSharedClassListFile, NULL, \ 4036 "Extra classlist for building the CDS archive file") \ 4037 \ 4038 experimental(size_t, ArrayAllocatorMallocLimit, \ 4039 SOLARIS_ONLY(64*K) NOT_SOLARIS((size_t)-1), \ 4040 "Allocation less than this value will be allocated " \ 4041 "using malloc. Larger allocations will use mmap.") \ 4042 \ 4043 experimental(bool, AlwaysAtomicAccesses, false, \ 4044 "Accesses to all variables should always be atomic") \ 4045 \ 4046 product(bool, EnableTracing, false, \ 4047 "Enable event-based tracing") \ 4048 \ 4049 product(bool, UseLockedTracing, false, \ 4050 "Use locked-tracing when doing event-based tracing") \ 4051 \ 4052 diagnostic(bool, UseUnalignedAccesses, false, \ 4053 "Use unaligned memory accesses in Unsafe") \ 4054 \ 4055 product_pd(bool, PreserveFramePointer, \ 4056 "Use the FP register for holding the frame pointer " \ 4057 "and not as a general purpose register.") \ 4058 \ 4059 diagnostic(bool, CheckIntrinsics, true, \ 4060 "When a class C is loaded, check that " \ 4061 "(1) all intrinsics defined by the VM for class C are present "\ 4062 "in the loaded class file and are marked with the " \ 4063 "@HotSpotIntrinsicCandidate annotation, that " \ 4064 "(2) there is an intrinsic registered for all loaded methods " \ 4065 "that are annotated with the @HotSpotIntrinsicCandidate " \ 4066 "annotation, and that " \ 4067 "(3) no orphan methods exist for class C (i.e., methods for " \ 4068 "which the VM declares an intrinsic but that are not declared "\ 4069 "in the loaded class C. " \ 4070 "Check (3) is available only in debug builds.") \ 4071 \ 4072 diagnostic_pd(intx, InitArrayShortSize, \ 4073 "Threshold small size (in bytes) for clearing arrays. " \ 4074 "Anything this size or smaller may get converted to discrete " \ 4075 "scalar stores.") \ 4076 range(0, max_intx) \ 4077 constraint(InitArrayShortSizeConstraintFunc, AfterErgo) \ 4078 \ 4079 diagnostic(bool, CompilerDirectivesIgnoreCompileCommands, false, \ 4080 "Disable backwards compatibility for compile commands.") \ 4081 \ 4082 diagnostic(bool, CompilerDirectivesPrint, false, \ 4083 "Print compiler directives on installation.") \ 4084 diagnostic(int, CompilerDirectivesLimit, 50, \ 4085 "Limit on number of compiler directives.") 4086 4087 4088/* 4089 * Macros for factoring of globals 4090 */ 4091 4092// Interface macros 4093#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 4094#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 4095#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 4096#define DECLARE_PD_DIAGNOSTIC_FLAG(type, name, doc) extern "C" type name; 4097#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 4098#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 4099#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 4100#ifdef PRODUCT 4101#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 4102#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 4103#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) const type name = value; 4104#else 4105#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 4106#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 4107#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 4108#endif // PRODUCT 4109// Special LP64 flags, product only needed for now. 4110#ifdef _LP64 4111#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 4112#else 4113#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 4114#endif // _LP64 4115 4116// Implementation macros 4117#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 4118#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 4119#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 4120#define MATERIALIZE_PD_DIAGNOSTIC_FLAG(type, name, doc) type name = pd_##name; 4121#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 4122#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 4123#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 4124#ifdef PRODUCT 4125#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) 4126#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) 4127#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 4128#else 4129#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 4130#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 4131#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 4132#endif // PRODUCT 4133#ifdef _LP64 4134#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 4135#else 4136#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 4137#endif // _LP64 4138 4139// Only materialize src code for range checking when required, ignore otherwise 4140#define IGNORE_RANGE(a, b) 4141// Only materialize src code for contraint checking when required, ignore otherwise 4142#define IGNORE_CONSTRAINT(func,type) 4143 4144#define IGNORE_WRITEABLE(type) 4145 4146RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, \ 4147 DECLARE_PD_DEVELOPER_FLAG, \ 4148 DECLARE_PRODUCT_FLAG, \ 4149 DECLARE_PD_PRODUCT_FLAG, \ 4150 DECLARE_DIAGNOSTIC_FLAG, \ 4151 DECLARE_PD_DIAGNOSTIC_FLAG, \ 4152 DECLARE_EXPERIMENTAL_FLAG, \ 4153 DECLARE_NOTPRODUCT_FLAG, \ 4154 DECLARE_MANAGEABLE_FLAG, \ 4155 DECLARE_PRODUCT_RW_FLAG, \ 4156 DECLARE_LP64_PRODUCT_FLAG, \ 4157 IGNORE_RANGE, \ 4158 IGNORE_CONSTRAINT, \ 4159 IGNORE_WRITEABLE) 4160 4161RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, \ 4162 DECLARE_PD_DEVELOPER_FLAG, \ 4163 DECLARE_PRODUCT_FLAG, \ 4164 DECLARE_PD_PRODUCT_FLAG, \ 4165 DECLARE_DIAGNOSTIC_FLAG, \ 4166 DECLARE_PD_DIAGNOSTIC_FLAG, \ 4167 DECLARE_NOTPRODUCT_FLAG, \ 4168 IGNORE_RANGE, \ 4169 IGNORE_CONSTRAINT, \ 4170 IGNORE_WRITEABLE) 4171 4172ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, \ 4173 DECLARE_PRODUCT_FLAG, \ 4174 DECLARE_DIAGNOSTIC_FLAG, \ 4175 DECLARE_EXPERIMENTAL_FLAG, \ 4176 DECLARE_NOTPRODUCT_FLAG, \ 4177 IGNORE_RANGE, \ 4178 IGNORE_CONSTRAINT, \ 4179 IGNORE_WRITEABLE) 4180 4181// Extensions 4182 4183#include "runtime/globals_ext.hpp" 4184 4185#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 4186