globals.hpp revision 4424:0c039865ef2b
11769Sjkh/* 21769Sjkh * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 31769Sjkh * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 41769Sjkh * 51769Sjkh * This code is free software; you can redistribute it and/or modify it 61769Sjkh * under the terms of the GNU General Public License version 2 only, as 71769Sjkh * published by the Free Software Foundation. 81769Sjkh * 91769Sjkh * This code is distributed in the hope that it will be useful, but WITHOUT 101769Sjkh * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 111769Sjkh * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 121769Sjkh * version 2 for more details (a copy is included in the LICENSE file that 131769Sjkh * accompanied this code). 141769Sjkh * 151769Sjkh * You should have received a copy of the GNU General Public License version 161769Sjkh * 2 along with this work; if not, write to the Free Software Foundation, 171769Sjkh * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 181769Sjkh * 191769Sjkh * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 201769Sjkh * or visit www.oracle.com if you need additional information or have any 211769Sjkh * questions. 221769Sjkh * 231769Sjkh */ 241769Sjkh 251769Sjkh#ifndef SHARE_VM_RUNTIME_GLOBALS_HPP 261769Sjkh#define SHARE_VM_RUNTIME_GLOBALS_HPP 271769Sjkh 281769Sjkh#include "utilities/debug.hpp" 291769Sjkh 301769Sjkh// use this for flags that are true per default in the tiered build 311769Sjkh// but false in non-tiered builds, and vice versa 321769Sjkh#ifdef TIERED 3351237Speter#define trueInTiered true 34130151Sschweikh#define falseInTiered false 351769Sjkh#else 363876Sache#define trueInTiered false 373876Sache#define falseInTiered true 3875786Sache#endif 3975786Sache 4075786Sache#ifdef TARGET_ARCH_x86 4175786Sache# include "globals_x86.hpp" 4275786Sache#endif 4375786Sache#ifdef TARGET_ARCH_sparc 443120Sache# include "globals_sparc.hpp" 455559Sache#endif 4675786Sache#ifdef TARGET_ARCH_zero 4762284Sache# include "globals_zero.hpp" 481769Sjkh#endif 4975786Sache#ifdef TARGET_ARCH_arm 5081669Sache# include "globals_arm.hpp" 5181669Sache#endif 5286793Sache#ifdef TARGET_ARCH_ppc 533876Sache# include "globals_ppc.hpp" 5486793Sache#endif 553876Sache#ifdef TARGET_OS_FAMILY_linux 563623Sache# include "globals_linux.hpp" 5763728Sache#endif 5862284Sache#ifdef TARGET_OS_FAMILY_solaris 5962284Sache# include "globals_solaris.hpp" 6062284Sache#endif 6162284Sache#ifdef TARGET_OS_FAMILY_windows 6262284Sache# include "globals_windows.hpp" 6362284Sache#endif 6462284Sache#ifdef TARGET_OS_FAMILY_bsd 6562284Sache# include "globals_bsd.hpp" 661769Sjkh#endif 677708Srgrimes#ifdef TARGET_OS_ARCH_linux_x86 683623Sache# include "globals_linux_x86.hpp" 693623Sache#endif 7062284Sache#ifdef TARGET_OS_ARCH_linux_sparc 7162284Sache# include "globals_linux_sparc.hpp" 7262284Sache#endif 7362284Sache#ifdef TARGET_OS_ARCH_linux_zero 74194107Sedwin# include "globals_linux_zero.hpp" 75194107Sedwin#endif 76194107Sedwin#ifdef TARGET_OS_ARCH_solaris_x86 77194107Sedwin# include "globals_solaris_x86.hpp" 78194107Sedwin#endif 79194107Sedwin#ifdef TARGET_OS_ARCH_solaris_sparc 80194107Sedwin# include "globals_solaris_sparc.hpp" 81194107Sedwin#endif 82194107Sedwin#ifdef TARGET_OS_ARCH_windows_x86 83194107Sedwin# include "globals_windows_x86.hpp" 84194107Sedwin#endif 8575717Sache#ifdef TARGET_OS_ARCH_linux_arm 8675717Sache# include "globals_linux_arm.hpp" 8786791Sache#endif 8865073Sache#ifdef TARGET_OS_ARCH_linux_ppc 8975717Sache# include "globals_linux_ppc.hpp" 9063728Sache#endif 9175717Sache#ifdef TARGET_OS_ARCH_bsd_x86 9262284Sache# include "globals_bsd_x86.hpp" 9375717Sache#endif 9462284Sache#ifdef TARGET_OS_ARCH_bsd_zero 9575717Sache# include "globals_bsd_zero.hpp" 9662284Sache#endif 9775717Sache#ifdef COMPILER1 9862284Sache#ifdef TARGET_ARCH_x86 9975717Sache# include "c1_globals_x86.hpp" 1003132Sache#endif 10175717Sache#ifdef TARGET_ARCH_sparc 1023623Sache# include "c1_globals_sparc.hpp" 10375717Sache#endif 10462284Sache#ifdef TARGET_ARCH_arm 10575717Sache# include "c1_globals_arm.hpp" 10662284Sache#endif 107194107Sedwin#ifdef TARGET_ARCH_ppc 108194107Sedwin# include "c1_globals_ppc.hpp" 109194107Sedwin#endif 110194107Sedwin#ifdef TARGET_OS_FAMILY_linux 111194107Sedwin# include "c1_globals_linux.hpp" 112194107Sedwin#endif 113194107Sedwin#ifdef TARGET_OS_FAMILY_solaris 114194107Sedwin# include "c1_globals_solaris.hpp" 115194107Sedwin#endif 116194107Sedwin#ifdef TARGET_OS_FAMILY_windows 117194107Sedwin# include "c1_globals_windows.hpp" 118194107Sedwin#endif 119194107Sedwin#ifdef TARGET_OS_FAMILY_bsd 120194107Sedwin# include "c1_globals_bsd.hpp" 121194107Sedwin#endif 122194107Sedwin#endif 123194107Sedwin#ifdef COMPILER2 124194107Sedwin#ifdef TARGET_ARCH_x86 125194107Sedwin# include "c2_globals_x86.hpp" 126194107Sedwin#endif 127194107Sedwin#ifdef TARGET_ARCH_sparc 128194107Sedwin# include "c2_globals_sparc.hpp" 12962284Sache#endif 13062284Sache#ifdef TARGET_ARCH_arm 13186791Sache# include "c2_globals_arm.hpp" 13262284Sache#endif 13362284Sache#ifdef TARGET_OS_FAMILY_linux 13463728Sache# include "c2_globals_linux.hpp" 13562284Sache#endif 13662284Sache#ifdef TARGET_OS_FAMILY_solaris 13762284Sache# include "c2_globals_solaris.hpp" 13862284Sache#endif 13962284Sache#ifdef TARGET_OS_FAMILY_windows 14062284Sache# include "c2_globals_windows.hpp" 14162284Sache#endif 14262284Sache#ifdef TARGET_OS_FAMILY_bsd 14362284Sache# include "c2_globals_bsd.hpp" 14462284Sache#endif 14562284Sache#endif 14662284Sache#ifdef SHARK 14762284Sache#ifdef TARGET_ARCH_zero 14862284Sache# include "shark_globals_zero.hpp" 14962284Sache#endif 15062284Sache#endif 15162284Sache 1523623Sache#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) 15386791Sachedefine_pd_global(bool, BackgroundCompilation, false); 1543876Sachedefine_pd_global(bool, UseTLAB, false); 1553623Sachedefine_pd_global(bool, CICompileOSR, false); 15663728Sachedefine_pd_global(bool, UseTypeProfile, false); 15762284Sachedefine_pd_global(bool, UseOnStackReplacement, false); 15862284Sachedefine_pd_global(bool, InlineIntrinsics, false); 15962284Sachedefine_pd_global(bool, PreferInterpreterNativeStubs, true); 16062284Sachedefine_pd_global(bool, ProfileInterpreter, false); 16162284Sachedefine_pd_global(bool, ProfileTraps, false); 16262284Sachedefine_pd_global(bool, TieredCompilation, false); 16362284Sache 16462284Sachedefine_pd_global(intx, CompileThreshold, 0); 1653623Sachedefine_pd_global(intx, BackEdgeThreshold, 0); 1663132Sache 1673623Sachedefine_pd_global(intx, OnStackReplacePercentage, 0); 1683623Sachedefine_pd_global(bool, ResizeTLAB, false); 16962284Sachedefine_pd_global(intx, FreqInlineSize, 0); 17062284Sachedefine_pd_global(intx, InlineSmallCode, 0); 17162284Sachedefine_pd_global(intx, NewSizeThreadIncrease, 4*K); 17262284Sachedefine_pd_global(intx, InlineClassNatives, true); 173194107Sedwindefine_pd_global(intx, InlineUnsafeOps, true); 174218477Suqsdefine_pd_global(intx, InitialCodeCacheSize, 160*K); 175194107Sedwindefine_pd_global(intx, ReservedCodeCacheSize, 32*M); 176194107Sedwindefine_pd_global(intx, CodeCacheExpansionSize, 32*K); 177194107Sedwindefine_pd_global(intx, CodeCacheMinBlockLength, 1); 178194107Sedwindefine_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M)); 179194107Sedwindefine_pd_global(bool, NeverActAsServerClassMachine, true); 180194107Sedwindefine_pd_global(uint64_t,MaxRAM, 1ULL*G); 181194107Sedwin#define CI_COMPILER_COUNT 0 182194107Sedwin#else 183194107Sedwin 18486789Sache#ifdef COMPILER2 185194088Sedwin#define CI_COMPILER_COUNT 2 18686791Sache#else 18786789Sache#define CI_COMPILER_COUNT 1 18886789Sache#endif // COMPILER2 18986789Sache 19086789Sache#endif // no compilers 19186789Sache 19286789Sache// string type aliases used only in this file 19386789Sachetypedef const char* ccstr; 19486789Sachetypedef const char* ccstrlist; // represents string arguments which accumulate 19586789Sache 19686789Sacheenum FlagValueOrigin { 19786789Sache DEFAULT = 0, 19886789Sache COMMAND_LINE = 1, 19986789Sache ENVIRON_VAR = 2, 20086789Sache CONFIG_FILE = 3, 20186789Sache MANAGEMENT = 4, 20286789Sache ERGONOMIC = 5, 20386789Sache ATTACH_ON_DEMAND = 6, 20486789Sache INTERNAL = 99 20586789Sache}; 2061769Sjkh 207204821Sedstruct Flag { 208204821Sed const char *type; 209204821Sed const char *name; 210204821Sed void* addr; 211204821Sed 212204821Sed NOT_PRODUCT(const char *doc;) 213204821Sed 214204821Sed const char *kind; 215204821Sed FlagValueOrigin origin; 216204821Sed 217204821Sed // points to all Flags static array 218204821Sed static Flag *flags; 219204821Sed 220204821Sed // number of flags 221204821Sed static size_t numFlags; 222204821Sed 223204821Sed static Flag* find_flag(char* name, size_t length, bool allow_locked = false); 224204821Sed 225204821Sed bool is_bool() const { return strcmp(type, "bool") == 0; } 226204821Sed bool get_bool() const { return *((bool*) addr); } 227204821Sed void set_bool(bool value) { *((bool*) addr) = value; } 228194107Sedwin 229204821Sed bool is_intx() const { return strcmp(type, "intx") == 0; } 230204821Sed intx get_intx() const { return *((intx*) addr); } 231204821Sed void set_intx(intx value) { *((intx*) addr) = value; } 232204821Sed 233204821Sed bool is_uintx() const { return strcmp(type, "uintx") == 0; } 234204821Sed uintx get_uintx() const { return *((uintx*) addr); } 235204821Sed void set_uintx(uintx value) { *((uintx*) addr) = value; } 236204821Sed 237204821Sed bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } 238204821Sed uint64_t get_uint64_t() const { return *((uint64_t*) addr); } 239204821Sed void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } 240204821Sed 241204821Sed bool is_double() const { return strcmp(type, "double") == 0; } 242204821Sed double get_double() const { return *((double*) addr); } 243204821Sed void set_double(double value) { *((double*) addr) = value; } 244204821Sed 245204821Sed bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } 246204821Sed bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } 247200369Sed ccstr get_ccstr() const { return *((ccstr*) addr); } 248194107Sedwin void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } 249200369Sed 250202048Sed bool is_unlocker() const; 251200369Sed bool is_unlocked() const; 252202048Sed bool is_writeable() const; 253200369Sed bool is_external() const; 254200369Sed 255194107Sedwin bool is_unlocker_ext() const; 256194107Sedwin bool is_unlocked_ext() const; 257200369Sed bool is_writeable_ext() const; 258200369Sed bool is_external_ext() const; 259200369Sed 260200369Sed void get_locked_message(char*, int) const; 261200369Sed void get_locked_message_ext(char*, int) const; 262200369Sed 263200369Sed void print_on(outputStream* st, bool withComments = false ); 264200369Sed void print_as_flag(outputStream* st); 265200369Sed}; 266200369Sed 267200369Sed// debug flags control various aspects of the VM and are global accessible 268200503Sdougb 269200369Sed// use FlagSetting to temporarily change some debug flag 270194107Sedwin// e.g. FlagSetting fs(DebugThisAndThat, true); 271194107Sedwin// restored to previous value upon leaving scope 272194107Sedwinclass FlagSetting { 273194107Sedwin bool val; 274200369Sed bool* flag; 275200369Sed public: 276200503Sdougb FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 277200503Sdougb ~FlagSetting() { *flag = val; } 278200503Sdougb}; 279200503Sdougb 280200503Sdougb 281204821Sedclass CounterSetting { 282204821Sed intx* counter; 283204821Sed public: 284204821Sed CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 285204821Sed ~CounterSetting() { (*counter)--; } 286204821Sed}; 287204821Sed 288204821Sed 289204821Sedclass IntFlagSetting { 290204821Sed intx val; 291204821Sed intx* flag; 292204821Sed public: 293204821Sed IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } 294204821Sed ~IntFlagSetting() { *flag = val; } 295204821Sed}; 296204821Sed 297204821Sed 298204821Sedclass DoubleFlagSetting { 299204821Sed double val; 300204821Sed double* flag; 301204821Sed public: 302204821Sed DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 303204821Sed ~DoubleFlagSetting() { *flag = val; } 304204821Sed}; 305204821Sed 306204821Sed 307204821Sedclass CommandLineFlags { 308204821Sed public: 309204821Sed static bool boolAt(char* name, size_t len, bool* value); 310204821Sed static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } 311204821Sed static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); 312204821Sed static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } 313204821Sed 314204821Sed static bool intxAt(char* name, size_t len, intx* value); 315204821Sed static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } 316 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); 317 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } 318 319 static bool uintxAt(char* name, size_t len, uintx* value); 320 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } 321 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); 322 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } 323 324 static bool uint64_tAt(char* name, size_t len, uint64_t* value); 325 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } 326 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); 327 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 328 329 static bool doubleAt(char* name, size_t len, double* value); 330 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } 331 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); 332 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } 333 334 static bool ccstrAt(char* name, size_t len, ccstr* value); 335 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } 336 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); 337 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } 338 339 // Returns false if name is not a command line flag. 340 static bool wasSetOnCmdline(const char* name, bool* value); 341 static void printSetFlags(outputStream* out); 342 343 static void printFlags(outputStream* out, bool withComments); 344 345 static void verify() PRODUCT_RETURN; 346}; 347 348// use this for flags that are true by default in the debug version but 349// false in the optimized version, and vice versa 350#ifdef ASSERT 351#define trueInDebug true 352#define falseInDebug false 353#else 354#define trueInDebug false 355#define falseInDebug true 356#endif 357 358// use this for flags that are true per default in the product build 359// but false in development builds, and vice versa 360#ifdef PRODUCT 361#define trueInProduct true 362#define falseInProduct false 363#else 364#define trueInProduct false 365#define falseInProduct true 366#endif 367 368#ifdef JAVASE_EMBEDDED 369#define falseInEmbedded false 370#else 371#define falseInEmbedded true 372#endif 373 374// develop flags are settable / visible only during development and are constant in the PRODUCT version 375// product flags are always settable / visible 376// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 377 378// A flag must be declared with one of the following types: 379// bool, intx, uintx, ccstr. 380// The type "ccstr" is an alias for "const char*" and is used 381// only in this file, because the macrology requires single-token type names. 382 383// Note: Diagnostic options not meant for VM tuning or for product modes. 384// They are to be used for VM quality assurance or field diagnosis 385// of VM bugs. They are hidden so that users will not be encouraged to 386// try them as if they were VM ordinary execution options. However, they 387// are available in the product version of the VM. Under instruction 388// from support engineers, VM customers can turn them on to collect 389// diagnostic information about VM problems. To use a VM diagnostic 390// option, you must first specify +UnlockDiagnosticVMOptions. 391// (This master switch also affects the behavior of -Xprintflags.) 392// 393// experimental flags are in support of features that are not 394// part of the officially supported product, but are available 395// for experimenting with. They could, for example, be performance 396// features that may not have undergone full or rigorous QA, but which may 397// help performance in some cases and released for experimentation 398// by the community of users and developers. This flag also allows one to 399// be able to build a fully supported product that nonetheless also 400// ships with some unsupported, lightly tested, experimental features. 401// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 402// UnlockExperimentalVMOptions flag, which allows the control and 403// modification of the experimental flags. 404// 405// Nota bene: neither diagnostic nor experimental options should be used casually, 406// and they are not supported on production loads, except under explicit 407// direction from support engineers. 408// 409// manageable flags are writeable external product flags. 410// They are dynamically writeable through the JDK management interface 411// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 412// These flags are external exported interface (see CCC). The list of 413// manageable flags can be queried programmatically through the management 414// interface. 415// 416// A flag can be made as "manageable" only if 417// - the flag is defined in a CCC as an external exported interface. 418// - the VM implementation supports dynamic setting of the flag. 419// This implies that the VM must *always* query the flag variable 420// and not reuse state related to the flag state at any given time. 421// - you want the flag to be queried programmatically by the customers. 422// 423// product_rw flags are writeable internal product flags. 424// They are like "manageable" flags but for internal/private use. 425// The list of product_rw flags are internal/private flags which 426// may be changed/removed in a future release. It can be set 427// through the management interface to get/set value 428// when the name of flag is supplied. 429// 430// A flag can be made as "product_rw" only if 431// - the VM implementation supports dynamic setting of the flag. 432// This implies that the VM must *always* query the flag variable 433// and not reuse state related to the flag state at any given time. 434// 435// Note that when there is a need to support develop flags to be writeable, 436// it can be done in the same way as product_rw. 437 438#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ 439 \ 440 lp64_product(bool, UseCompressedOops, false, \ 441 "Use 32-bit object references in 64-bit VM " \ 442 "lp64_product means flag is always constant in 32 bit VM") \ 443 \ 444 lp64_product(bool, UseCompressedKlassPointers, false, \ 445 "Use 32-bit klass pointers in 64-bit VM " \ 446 "lp64_product means flag is always constant in 32 bit VM") \ 447 \ 448 notproduct(bool, CheckCompressedOops, true, \ 449 "generate checks in encoding/decoding code in debug VM") \ 450 \ 451 product_pd(uintx, HeapBaseMinAddress, \ 452 "OS specific low limit for heap base address") \ 453 \ 454 diagnostic(bool, PrintCompressedOopsMode, false, \ 455 "Print compressed oops base address and encoding mode") \ 456 \ 457 lp64_product(intx, ObjectAlignmentInBytes, 8, \ 458 "Default object alignment in bytes, 8 is minimum") \ 459 \ 460 product(bool, AssumeMP, false, \ 461 "Instruct the VM to assume multiple processors are available") \ 462 \ 463 /* UseMembar is theoretically a temp flag used for memory barrier \ 464 * removal testing. It was supposed to be removed before FCS but has \ 465 * been re-added (see 6401008) */ \ 466 product_pd(bool, UseMembar, \ 467 "(Unstable) Issues membars on thread state transitions") \ 468 \ 469 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ 470 * that don't support it. This will be replaced by processor detection \ 471 * logic. \ 472 */ \ 473 product(bool, UsePPCLWSYNC, true, \ 474 "Use lwsync instruction if true, else use slower sync") \ 475 \ 476 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ 477 "Whether to clean the chunk pool asynchronously") \ 478 \ 479 /* Temporary: See 6948537 */ \ 480 experimental(bool, UseMemSetInBOT, true, \ 481 "(Unstable) uses memset in BOT updates in GC code") \ 482 \ 483 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 484 "Enable normal processing of flags relating to field diagnostics")\ 485 \ 486 experimental(bool, UnlockExperimentalVMOptions, false, \ 487 "Enable normal processing of flags relating to experimental features")\ 488 \ 489 product(bool, JavaMonitorsInStackTrace, true, \ 490 "Print info. about Java monitor locks when the stacks are dumped")\ 491 \ 492 product_pd(bool, UseLargePages, \ 493 "Use large page memory") \ 494 \ 495 product_pd(bool, UseLargePagesIndividualAllocation, \ 496 "Allocate large pages individually for better affinity") \ 497 \ 498 develop(bool, LargePagesIndividualAllocationInjectError, false, \ 499 "Fail large pages individual allocation") \ 500 \ 501 develop(bool, TracePageSizes, false, \ 502 "Trace page size selection and usage.") \ 503 \ 504 product(bool, UseNUMA, false, \ 505 "Use NUMA if available") \ 506 \ 507 product(bool, UseNUMAInterleaving, false, \ 508 "Interleave memory across NUMA nodes if available") \ 509 \ 510 product(uintx, NUMAInterleaveGranularity, 2*M, \ 511 "Granularity to use for NUMA interleaving on Windows OS") \ 512 \ 513 product(bool, ForceNUMA, false, \ 514 "Force NUMA optimizations on single-node/UMA systems") \ 515 \ 516 product(intx, NUMAChunkResizeWeight, 20, \ 517 "Percentage (0-100) used to weight the current sample when " \ 518 "computing exponentially decaying average for " \ 519 "AdaptiveNUMAChunkSizing") \ 520 \ 521 product(intx, NUMASpaceResizeRate, 1*G, \ 522 "Do not reallocate more that this amount per collection") \ 523 \ 524 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 525 "Enable adaptive chunk sizing for NUMA") \ 526 \ 527 product(bool, NUMAStats, false, \ 528 "Print NUMA stats in detailed heap information") \ 529 \ 530 product(intx, NUMAPageScanRate, 256, \ 531 "Maximum number of pages to include in the page scan procedure") \ 532 \ 533 product_pd(bool, NeedsDeoptSuspend, \ 534 "True for register window machines (sparc/ia64)") \ 535 \ 536 product(intx, UseSSE, 99, \ 537 "Highest supported SSE instructions set on x86/x64") \ 538 \ 539 product(bool, UseAES, false, \ 540 "Control whether AES instructions can be used on x86/x64") \ 541 \ 542 product(uintx, LargePageSizeInBytes, 0, \ 543 "Large page size (0 to let VM choose the page size") \ 544 \ 545 product(uintx, LargePageHeapSizeThreshold, 128*M, \ 546 "Use large pages if max heap is at least this big") \ 547 \ 548 product(bool, ForceTimeHighResolution, false, \ 549 "Using high time resolution(For Win32 only)") \ 550 \ 551 develop(bool, TraceItables, false, \ 552 "Trace initialization and use of itables") \ 553 \ 554 develop(bool, TracePcPatching, false, \ 555 "Trace usage of frame::patch_pc") \ 556 \ 557 develop(bool, TraceJumps, false, \ 558 "Trace assembly jumps in thread ring buffer") \ 559 \ 560 develop(bool, TraceRelocator, false, \ 561 "Trace the bytecode relocator") \ 562 \ 563 develop(bool, TraceLongCompiles, false, \ 564 "Print out every time compilation is longer than " \ 565 "a given threashold") \ 566 \ 567 develop(bool, SafepointALot, false, \ 568 "Generates a lot of safepoints. Works with " \ 569 "GuaranteedSafepointInterval") \ 570 \ 571 product_pd(bool, BackgroundCompilation, \ 572 "A thread requesting compilation is not blocked during " \ 573 "compilation") \ 574 \ 575 product(bool, PrintVMQWaitTime, false, \ 576 "Prints out the waiting time in VM operation queue") \ 577 \ 578 develop(bool, NoYieldsInMicrolock, false, \ 579 "Disable yields in microlock") \ 580 \ 581 develop(bool, TraceOopMapGeneration, false, \ 582 "Shows oopmap generation") \ 583 \ 584 product(bool, MethodFlushing, true, \ 585 "Reclamation of zombie and not-entrant methods") \ 586 \ 587 develop(bool, VerifyStack, false, \ 588 "Verify stack of each thread when it is entering a runtime call") \ 589 \ 590 diagnostic(bool, ForceUnreachable, false, \ 591 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ 592 \ 593 notproduct(bool, StressDerivedPointers, false, \ 594 "Force scavenge when a derived pointers is detected on stack " \ 595 "after rtm call") \ 596 \ 597 develop(bool, TraceDerivedPointers, false, \ 598 "Trace traversal of derived pointers on stack") \ 599 \ 600 notproduct(bool, TraceCodeBlobStacks, false, \ 601 "Trace stack-walk of codeblobs") \ 602 \ 603 product(bool, PrintJNIResolving, false, \ 604 "Used to implement -v:jni") \ 605 \ 606 notproduct(bool, PrintRewrites, false, \ 607 "Print methods that are being rewritten") \ 608 \ 609 product(bool, UseInlineCaches, true, \ 610 "Use Inline Caches for virtual calls ") \ 611 \ 612 develop(bool, InlineArrayCopy, true, \ 613 "inline arraycopy native that is known to be part of " \ 614 "base library DLL") \ 615 \ 616 develop(bool, InlineObjectHash, true, \ 617 "inline Object::hashCode() native that is known to be part " \ 618 "of base library DLL") \ 619 \ 620 develop(bool, InlineNatives, true, \ 621 "inline natives that are known to be part of base library DLL") \ 622 \ 623 develop(bool, InlineMathNatives, true, \ 624 "inline SinD, CosD, etc.") \ 625 \ 626 develop(bool, InlineClassNatives, true, \ 627 "inline Class.isInstance, etc") \ 628 \ 629 develop(bool, InlineThreadNatives, true, \ 630 "inline Thread.currentThread, etc") \ 631 \ 632 develop(bool, InlineUnsafeOps, true, \ 633 "inline memory ops (native methods) from sun.misc.Unsafe") \ 634 \ 635 product(bool, CriticalJNINatives, true, \ 636 "check for critical JNI entry points") \ 637 \ 638 notproduct(bool, StressCriticalJNINatives, false, \ 639 "Exercise register saving code in critical natives") \ 640 \ 641 product(bool, UseSSE42Intrinsics, false, \ 642 "SSE4.2 versions of intrinsics") \ 643 \ 644 product(bool, UseAESIntrinsics, false, \ 645 "use intrinsics for AES versions of crypto") \ 646 \ 647 develop(bool, TraceCallFixup, false, \ 648 "traces all call fixups") \ 649 \ 650 develop(bool, DeoptimizeALot, false, \ 651 "deoptimize at every exit from the runtime system") \ 652 \ 653 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 654 "a comma separated list of bcis to deoptimize at") \ 655 \ 656 product(bool, DeoptimizeRandom, false, \ 657 "deoptimize random frames on random exit from the runtime system")\ 658 \ 659 notproduct(bool, ZombieALot, false, \ 660 "creates zombies (non-entrant) at exit from the runt. system") \ 661 \ 662 product(bool, UnlinkSymbolsALot, false, \ 663 "unlink unreferenced symbols from the symbol table at safepoints")\ 664 \ 665 notproduct(bool, WalkStackALot, false, \ 666 "trace stack (no print) at every exit from the runtime system") \ 667 \ 668 product(bool, Debugging, false, \ 669 "set when executing debug methods in debug.ccp " \ 670 "(to prevent triggering assertions)") \ 671 \ 672 notproduct(bool, StrictSafepointChecks, trueInDebug, \ 673 "Enable strict checks that safepoints cannot happen for threads " \ 674 "that used No_Safepoint_Verifier") \ 675 \ 676 notproduct(bool, VerifyLastFrame, false, \ 677 "Verify oops on last frame on entry to VM") \ 678 \ 679 develop(bool, TraceHandleAllocation, false, \ 680 "Prints out warnings when suspicious many handles are allocated") \ 681 \ 682 product(bool, UseCompilerSafepoints, true, \ 683 "Stop at safepoints in compiled code") \ 684 \ 685 product(bool, FailOverToOldVerifier, true, \ 686 "fail over to old verifier when split verifier fails") \ 687 \ 688 develop(bool, ShowSafepointMsgs, false, \ 689 "Show msg. about safepoint synch.") \ 690 \ 691 product(bool, SafepointTimeout, false, \ 692 "Time out and warn or fail after SafepointTimeoutDelay " \ 693 "milliseconds if failed to reach safepoint") \ 694 \ 695 develop(bool, DieOnSafepointTimeout, false, \ 696 "Die upon failure to reach safepoint (see SafepointTimeout)") \ 697 \ 698 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 699 /* typically, at most a few retries are needed */ \ 700 product(intx, SuspendRetryCount, 50, \ 701 "Maximum retry count for an external suspend request") \ 702 \ 703 product(intx, SuspendRetryDelay, 5, \ 704 "Milliseconds to delay per retry (* current_retry_count)") \ 705 \ 706 product(bool, AssertOnSuspendWaitFailure, false, \ 707 "Assert/Guarantee on external suspend wait failure") \ 708 \ 709 product(bool, TraceSuspendWaitFailures, false, \ 710 "Trace external suspend wait failures") \ 711 \ 712 product(bool, MaxFDLimit, true, \ 713 "Bump the number of file descriptors to max in solaris.") \ 714 \ 715 diagnostic(bool, LogEvents, true, \ 716 "Enable the various ring buffer event logs") \ 717 \ 718 diagnostic(intx, LogEventsBufferEntries, 10, \ 719 "Enable the various ring buffer event logs") \ 720 \ 721 product(bool, BytecodeVerificationRemote, true, \ 722 "Enables the Java bytecode verifier for remote classes") \ 723 \ 724 product(bool, BytecodeVerificationLocal, false, \ 725 "Enables the Java bytecode verifier for local classes") \ 726 \ 727 develop(bool, ForceFloatExceptions, trueInDebug, \ 728 "Force exceptions on FP stack under/overflow") \ 729 \ 730 develop(bool, VerifyStackAtCalls, false, \ 731 "Verify that the stack pointer is unchanged after calls") \ 732 \ 733 develop(bool, TraceJavaAssertions, false, \ 734 "Trace java language assertions") \ 735 \ 736 notproduct(bool, CheckAssertionStatusDirectives, false, \ 737 "temporary - see javaClasses.cpp") \ 738 \ 739 notproduct(bool, PrintMallocFree, false, \ 740 "Trace calls to C heap malloc/free allocation") \ 741 \ 742 product(bool, PrintOopAddress, false, \ 743 "Always print the location of the oop") \ 744 \ 745 notproduct(bool, VerifyCodeCacheOften, false, \ 746 "Verify compiled-code cache often") \ 747 \ 748 develop(bool, ZapDeadCompiledLocals, false, \ 749 "Zap dead locals in compiler frames") \ 750 \ 751 notproduct(bool, ZapDeadLocalsOld, false, \ 752 "Zap dead locals (old version, zaps all frames when " \ 753 "entering the VM") \ 754 \ 755 notproduct(bool, CheckOopishValues, false, \ 756 "Warn if value contains oop ( requires ZapDeadLocals)") \ 757 \ 758 develop(bool, UseMallocOnly, false, \ 759 "use only malloc/free for allocation (no resource area/arena)") \ 760 \ 761 develop(bool, PrintMalloc, false, \ 762 "print all malloc/free calls") \ 763 \ 764 develop(bool, PrintMallocStatistics, false, \ 765 "print malloc/free statistics") \ 766 \ 767 develop(bool, ZapResourceArea, trueInDebug, \ 768 "Zap freed resource/arena space with 0xABABABAB") \ 769 \ 770 notproduct(bool, ZapVMHandleArea, trueInDebug, \ 771 "Zap freed VM handle space with 0xBCBCBCBC") \ 772 \ 773 develop(bool, ZapJNIHandleArea, trueInDebug, \ 774 "Zap freed JNI handle space with 0xFEFEFEFE") \ 775 \ 776 notproduct(bool, ZapStackSegments, trueInDebug, \ 777 "Zap allocated/freed Stack segments with 0xFADFADED") \ 778 \ 779 develop(bool, ZapUnusedHeapArea, trueInDebug, \ 780 "Zap unused heap space with 0xBAADBABE") \ 781 \ 782 develop(bool, TraceZapUnusedHeapArea, false, \ 783 "Trace zapping of unused heap space") \ 784 \ 785 develop(bool, CheckZapUnusedHeapArea, false, \ 786 "Check zapping of unused heap space") \ 787 \ 788 develop(bool, ZapFillerObjects, trueInDebug, \ 789 "Zap filler objects with 0xDEAFBABE") \ 790 \ 791 develop(bool, PrintVMMessages, true, \ 792 "Print vm messages on console") \ 793 \ 794 product(bool, PrintGCApplicationConcurrentTime, false, \ 795 "Print the time the application has been running") \ 796 \ 797 product(bool, PrintGCApplicationStoppedTime, false, \ 798 "Print the time the application has been stopped") \ 799 \ 800 diagnostic(bool, VerboseVerification, false, \ 801 "Display detailed verification details") \ 802 \ 803 notproduct(uintx, ErrorHandlerTest, 0, \ 804 "If > 0, provokes an error after VM initialization; the value" \ 805 "determines which error to provoke. See test_error_handler()" \ 806 "in debug.cpp.") \ 807 \ 808 develop(bool, Verbose, false, \ 809 "Prints additional debugging information from other modes") \ 810 \ 811 develop(bool, PrintMiscellaneous, false, \ 812 "Prints uncategorized debugging information (requires +Verbose)") \ 813 \ 814 develop(bool, WizardMode, false, \ 815 "Prints much more debugging information") \ 816 \ 817 product(bool, ShowMessageBoxOnError, false, \ 818 "Keep process alive on VM fatal error") \ 819 \ 820 product(bool, CreateMinidumpOnCrash, false, \ 821 "Create minidump on VM fatal error") \ 822 \ 823 product_pd(bool, UseOSErrorReporting, \ 824 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 825 \ 826 product(bool, SuppressFatalErrorMessage, false, \ 827 "Do NO Fatal Error report [Avoid deadlock]") \ 828 \ 829 product(ccstrlist, OnError, "", \ 830 "Run user-defined commands on fatal error; see VMError.cpp " \ 831 "for examples") \ 832 \ 833 product(ccstrlist, OnOutOfMemoryError, "", \ 834 "Run user-defined commands on first java.lang.OutOfMemoryError") \ 835 \ 836 manageable(bool, HeapDumpBeforeFullGC, false, \ 837 "Dump heap to file before any major stop-world GC") \ 838 \ 839 manageable(bool, HeapDumpAfterFullGC, false, \ 840 "Dump heap to file after any major stop-world GC") \ 841 \ 842 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 843 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 844 \ 845 manageable(ccstr, HeapDumpPath, NULL, \ 846 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ 847 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ 848 "in the working directory)") \ 849 \ 850 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ 851 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 852 "when the heap usage is larger than this") \ 853 \ 854 develop(uintx, HeapDumpSegmentSize, 1*G, \ 855 "Approximate segment size when generating a segmented heap dump") \ 856 \ 857 develop(bool, BreakAtWarning, false, \ 858 "Execute breakpoint upon encountering VM warning") \ 859 \ 860 develop(bool, TraceVMOperation, false, \ 861 "Trace vm operations") \ 862 \ 863 develop(bool, UseFakeTimers, false, \ 864 "Tells whether the VM should use system time or a fake timer") \ 865 \ 866 product(ccstr, NativeMemoryTracking, "off", \ 867 "Native memory tracking options") \ 868 \ 869 diagnostic(bool, PrintNMTStatistics, false, \ 870 "Print native memory tracking summary data if it is on") \ 871 \ 872 diagnostic(bool, AutoShutdownNMT, true, \ 873 "Automatically shutdown native memory tracking under stress " \ 874 "situation. When set to false, native memory tracking tries to " \ 875 "stay alive at the expense of JVM performance") \ 876 \ 877 diagnostic(bool, LogCompilation, false, \ 878 "Log compilation activity in detail to hotspot.log or LogFile") \ 879 \ 880 product(bool, PrintCompilation, false, \ 881 "Print compilations") \ 882 \ 883 diagnostic(bool, TraceNMethodInstalls, false, \ 884 "Trace nmethod intallation") \ 885 \ 886 diagnostic(intx, ScavengeRootsInCode, 2, \ 887 "0: do not allow scavengable oops in the code cache; " \ 888 "1: allow scavenging from the code cache; " \ 889 "2: emit as many constants as the compiler can see") \ 890 \ 891 product(bool, AlwaysRestoreFPU, false, \ 892 "Restore the FPU control word after every JNI call (expensive)") \ 893 \ 894 diagnostic(bool, PrintCompilation2, false, \ 895 "Print additional statistics per compilation") \ 896 \ 897 diagnostic(bool, PrintAdapterHandlers, false, \ 898 "Print code generated for i2c/c2i adapters") \ 899 \ 900 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 901 "Verify that i2c/c2i adapters are called properly") \ 902 \ 903 develop(bool, VerifyAdapterSharing, false, \ 904 "Verify that the code for shared adapters is the equivalent") \ 905 \ 906 diagnostic(bool, PrintAssembly, false, \ 907 "Print assembly code (using external disassembler.so)") \ 908 \ 909 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 910 "Options string passed to disassembler.so") \ 911 \ 912 diagnostic(bool, PrintNMethods, false, \ 913 "Print assembly code for nmethods when generated") \ 914 \ 915 diagnostic(bool, PrintNativeNMethods, false, \ 916 "Print assembly code for native nmethods when generated") \ 917 \ 918 develop(bool, PrintDebugInfo, false, \ 919 "Print debug information for all nmethods when generated") \ 920 \ 921 develop(bool, PrintRelocations, false, \ 922 "Print relocation information for all nmethods when generated") \ 923 \ 924 develop(bool, PrintDependencies, false, \ 925 "Print dependency information for all nmethods when generated") \ 926 \ 927 develop(bool, PrintExceptionHandlers, false, \ 928 "Print exception handler tables for all nmethods when generated") \ 929 \ 930 develop(bool, StressCompiledExceptionHandlers, false, \ 931 "Exercise compiled exception handlers") \ 932 \ 933 develop(bool, InterceptOSException, false, \ 934 "Starts debugger when an implicit OS (e.g., NULL) " \ 935 "exception happens") \ 936 \ 937 product(bool, PrintCodeCache, false, \ 938 "Print the code cache memory usage when exiting") \ 939 \ 940 develop(bool, PrintCodeCache2, false, \ 941 "Print detailed usage info on the code cache when exiting") \ 942 \ 943 product(bool, PrintCodeCacheOnCompilation, false, \ 944 "Print the code cache memory usage each time a method is compiled") \ 945 \ 946 diagnostic(bool, PrintStubCode, false, \ 947 "Print generated stub code") \ 948 \ 949 product(bool, StackTraceInThrowable, true, \ 950 "Collect backtrace in throwable when exception happens") \ 951 \ 952 product(bool, OmitStackTraceInFastThrow, true, \ 953 "Omit backtraces for some 'hot' exceptions in optimized code") \ 954 \ 955 product(bool, ProfilerPrintByteCodeStatistics, false, \ 956 "Prints byte code statictics when dumping profiler output") \ 957 \ 958 product(bool, ProfilerRecordPC, false, \ 959 "Collects tick for each 16 byte interval of compiled code") \ 960 \ 961 product(bool, ProfileVM, false, \ 962 "Profiles ticks that fall within VM (either in the VM Thread " \ 963 "or VM code called through stubs)") \ 964 \ 965 product(bool, ProfileIntervals, false, \ 966 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ 967 \ 968 notproduct(bool, ProfilerCheckIntervals, false, \ 969 "Collect and print info on spacing of profiler ticks") \ 970 \ 971 develop(bool, PrintJVMWarnings, false, \ 972 "Prints warnings for unimplemented JVM functions") \ 973 \ 974 product(bool, PrintWarnings, true, \ 975 "Prints JVM warnings to output stream") \ 976 \ 977 notproduct(uintx, WarnOnStalledSpinLock, 0, \ 978 "Prints warnings for stalled SpinLocks") \ 979 \ 980 product(bool, RegisterFinalizersAtInit, true, \ 981 "Register finalizable objects at end of Object.<init> or " \ 982 "after allocation") \ 983 \ 984 develop(bool, RegisterReferences, true, \ 985 "Tells whether the VM should register soft/weak/final/phantom " \ 986 "references") \ 987 \ 988 develop(bool, IgnoreRewrites, false, \ 989 "Supress rewrites of bytecodes in the oopmap generator. " \ 990 "This is unsafe!") \ 991 \ 992 develop(bool, PrintCodeCacheExtension, false, \ 993 "Print extension of code cache") \ 994 \ 995 develop(bool, UsePrivilegedStack, true, \ 996 "Enable the security JVM functions") \ 997 \ 998 develop(bool, ProtectionDomainVerification, true, \ 999 "Verifies protection domain before resolution in system " \ 1000 "dictionary") \ 1001 \ 1002 product(bool, ClassUnloading, true, \ 1003 "Do unloading of classes") \ 1004 \ 1005 develop(bool, DisableStartThread, false, \ 1006 "Disable starting of additional Java threads " \ 1007 "(for debugging only)") \ 1008 \ 1009 develop(bool, MemProfiling, false, \ 1010 "Write memory usage profiling to log file") \ 1011 \ 1012 notproduct(bool, PrintSystemDictionaryAtExit, false, \ 1013 "Prints the system dictionary at exit") \ 1014 \ 1015 experimental(intx, PredictedLoadedClassCount, 0, \ 1016 "Experimental: Tune loaded class cache starting size.") \ 1017 \ 1018 diagnostic(bool, UnsyncloadClass, false, \ 1019 "Unstable: VM calls loadClass unsynchronized. Custom " \ 1020 "class loader must call VM synchronized for findClass " \ 1021 "and defineClass.") \ 1022 \ 1023 product(bool, AlwaysLockClassLoader, false, \ 1024 "Require the VM to acquire the class loader lock before calling " \ 1025 "loadClass() even for class loaders registering " \ 1026 "as parallel capable") \ 1027 \ 1028 product(bool, AllowParallelDefineClass, false, \ 1029 "Allow parallel defineClass requests for class loaders " \ 1030 "registering as parallel capable") \ 1031 \ 1032 product(bool, MustCallLoadClassInternal, false, \ 1033 "Call loadClassInternal() rather than loadClass()") \ 1034 \ 1035 product_pd(bool, DontYieldALot, \ 1036 "Throw away obvious excess yield calls (for SOLARIS only)") \ 1037 \ 1038 product_pd(bool, ConvertSleepToYield, \ 1039 "Converts sleep(0) to thread yield " \ 1040 "(may be off for SOLARIS to improve GUI)") \ 1041 \ 1042 product(bool, ConvertYieldToSleep, false, \ 1043 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ 1044 "behavior (SOLARIS only)") \ 1045 \ 1046 product(bool, UseBoundThreads, true, \ 1047 "Bind user level threads to kernel threads (for SOLARIS only)") \ 1048 \ 1049 develop(bool, UseDetachedThreads, true, \ 1050 "Use detached threads that are recycled upon termination " \ 1051 "(for SOLARIS only)") \ 1052 \ 1053 product(bool, UseLWPSynchronization, true, \ 1054 "Use LWP-based instead of libthread-based synchronization " \ 1055 "(SPARC only)") \ 1056 \ 1057 product(ccstr, SyncKnobs, NULL, \ 1058 "(Unstable) Various monitor synchronization tunables") \ 1059 \ 1060 product(intx, EmitSync, 0, \ 1061 "(Unsafe,Unstable) " \ 1062 " Controls emission of inline sync fast-path code") \ 1063 \ 1064 product(intx, MonitorBound, 0, "Bound Monitor population") \ 1065 \ 1066 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ 1067 \ 1068 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ 1069 \ 1070 product(intx, SyncVerbose, 0, "(Unstable)" ) \ 1071 \ 1072 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ 1073 \ 1074 product(intx, hashCode, 5, \ 1075 "(Unstable) select hashCode generation algorithm" ) \ 1076 \ 1077 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ 1078 "(Unstable, Linux-specific)" \ 1079 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ 1080 \ 1081 product(bool, FilterSpuriousWakeups, true, \ 1082 "Prevent spurious or premature wakeups from object.wait " \ 1083 "(Solaris only)") \ 1084 \ 1085 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ 1086 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ 1087 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ 1088 \ 1089 develop(bool, UsePthreads, false, \ 1090 "Use pthread-based instead of libthread-based synchronization " \ 1091 "(SPARC only)") \ 1092 \ 1093 product(bool, AdjustConcurrency, false, \ 1094 "call thr_setconcurrency at thread create time to avoid " \ 1095 "LWP starvation on MP systems (For Solaris Only)") \ 1096 \ 1097 product(bool, ReduceSignalUsage, false, \ 1098 "Reduce the use of OS signals in Java and/or the VM") \ 1099 \ 1100 develop_pd(bool, ShareVtableStubs, \ 1101 "Share vtable stubs (smaller code but worse branch prediction") \ 1102 \ 1103 develop(bool, LoadLineNumberTables, true, \ 1104 "Tells whether the class file parser loads line number tables") \ 1105 \ 1106 develop(bool, LoadLocalVariableTables, true, \ 1107 "Tells whether the class file parser loads local variable tables")\ 1108 \ 1109 develop(bool, LoadLocalVariableTypeTables, true, \ 1110 "Tells whether the class file parser loads local variable type tables")\ 1111 \ 1112 product(bool, AllowUserSignalHandlers, false, \ 1113 "Do not complain if the application installs signal handlers " \ 1114 "(Solaris & Linux only)") \ 1115 \ 1116 product(bool, UseSignalChaining, true, \ 1117 "Use signal-chaining to invoke signal handlers installed " \ 1118 "by the application (Solaris & Linux only)") \ 1119 \ 1120 product(bool, UseAltSigs, false, \ 1121 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 1122 "internal signals (Solaris only)") \ 1123 \ 1124 product(bool, AllowJNIEnvProxy, false, \ 1125 "Allow JNIEnv proxies for jdbx") \ 1126 \ 1127 product(bool, JNIDetachReleasesMonitors, true, \ 1128 "JNI DetachCurrentThread releases monitors owned by thread") \ 1129 \ 1130 product(bool, RestoreMXCSROnJNICalls, false, \ 1131 "Restore MXCSR when returning from JNI calls") \ 1132 \ 1133 product(bool, CheckJNICalls, false, \ 1134 "Verify all arguments to JNI calls") \ 1135 \ 1136 product(bool, UseFastJNIAccessors, true, \ 1137 "Use optimized versions of Get<Primitive>Field") \ 1138 \ 1139 product(bool, EagerXrunInit, false, \ 1140 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 1141 " but not all -Xrun libraries may support the state of the VM at this time") \ 1142 \ 1143 product(bool, PreserveAllAnnotations, false, \ 1144 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ 1145 \ 1146 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 1147 "Number of OutOfMemoryErrors preallocated with backtrace") \ 1148 \ 1149 product(bool, LazyBootClassLoader, true, \ 1150 "Enable/disable lazy opening of boot class path entries") \ 1151 \ 1152 product(bool, UseXMMForArrayCopy, false, \ 1153 "Use SSE2 MOVQ instruction for Arraycopy") \ 1154 \ 1155 product(intx, FieldsAllocationStyle, 1, \ 1156 "0 - type based with oops first, 1 - with oops last, " \ 1157 "2 - oops in super and sub classes are together") \ 1158 \ 1159 product(bool, CompactFields, true, \ 1160 "Allocate nonstatic fields in gaps between previous fields") \ 1161 \ 1162 notproduct(bool, PrintCompactFieldsSavings, false, \ 1163 "Print how many words were saved with CompactFields") \ 1164 \ 1165 notproduct(bool, PrintFieldLayout, false, \ 1166 "Print field layout for each class") \ 1167 \ 1168 product(intx, ContendedPaddingWidth, 128, \ 1169 "How many bytes to pad the fields/classes marked @Contended with")\ 1170 \ 1171 product(bool, EnableContended, true, \ 1172 "Enable @Contended annotation support") \ 1173 \ 1174 product(bool, RestrictContended, true, \ 1175 "Restrict @Contended to trusted classes") \ 1176 \ 1177 product(bool, UseBiasedLocking, true, \ 1178 "Enable biased locking in JVM") \ 1179 \ 1180 product(intx, BiasedLockingStartupDelay, 4000, \ 1181 "Number of milliseconds to wait before enabling biased locking") \ 1182 \ 1183 diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1184 "Print statistics of biased locking in JVM") \ 1185 \ 1186 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1187 "Threshold of number of revocations per type to try to " \ 1188 "rebias all objects in the heap of that type") \ 1189 \ 1190 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1191 "Threshold of number of revocations per type to permanently " \ 1192 "revoke biases of all objects in the heap of that type") \ 1193 \ 1194 product(intx, BiasedLockingDecayTime, 25000, \ 1195 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1196 "type after previous bulk rebias") \ 1197 \ 1198 /* tracing */ \ 1199 \ 1200 notproduct(bool, TraceRuntimeCalls, false, \ 1201 "Trace run-time calls") \ 1202 \ 1203 develop(bool, TraceJNICalls, false, \ 1204 "Trace JNI calls") \ 1205 \ 1206 notproduct(bool, TraceJVMCalls, false, \ 1207 "Trace JVM calls") \ 1208 \ 1209 product(ccstr, TraceJVMTI, NULL, \ 1210 "Trace flags for JVMTI functions and events") \ 1211 \ 1212 /* This option can change an EMCP method into an obsolete method. */ \ 1213 /* This can affect tests that except specific methods to be EMCP. */ \ 1214 /* This option should be used with caution. */ \ 1215 product(bool, StressLdcRewrite, false, \ 1216 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1217 \ 1218 product(intx, TraceRedefineClasses, 0, \ 1219 "Trace level for JVMTI RedefineClasses") \ 1220 \ 1221 develop(bool, StressMethodComparator, false, \ 1222 "run the MethodComparator on all loaded methods") \ 1223 \ 1224 /* change to false by default sometime after Mustang */ \ 1225 product(bool, VerifyMergedCPBytecodes, true, \ 1226 "Verify bytecodes after RedefineClasses constant pool merging") \ 1227 \ 1228 develop(bool, TraceJNIHandleAllocation, false, \ 1229 "Trace allocation/deallocation of JNI handle blocks") \ 1230 \ 1231 develop(bool, TraceThreadEvents, false, \ 1232 "Trace all thread events") \ 1233 \ 1234 develop(bool, TraceBytecodes, false, \ 1235 "Trace bytecode execution") \ 1236 \ 1237 develop(bool, TraceClassInitialization, false, \ 1238 "Trace class initialization") \ 1239 \ 1240 develop(bool, TraceExceptions, false, \ 1241 "Trace exceptions") \ 1242 \ 1243 develop(bool, TraceICs, false, \ 1244 "Trace inline cache changes") \ 1245 \ 1246 notproduct(bool, TraceInvocationCounterOverflow, false, \ 1247 "Trace method invocation counter overflow") \ 1248 \ 1249 develop(bool, TraceInlineCacheClearing, false, \ 1250 "Trace clearing of inline caches in nmethods") \ 1251 \ 1252 develop(bool, TraceDependencies, false, \ 1253 "Trace dependencies") \ 1254 \ 1255 develop(bool, VerifyDependencies, trueInDebug, \ 1256 "Exercise and verify the compilation dependency mechanism") \ 1257 \ 1258 develop(bool, TraceNewOopMapGeneration, false, \ 1259 "Trace OopMapGeneration") \ 1260 \ 1261 develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1262 "Trace OopMapGeneration: print detailed cell states") \ 1263 \ 1264 develop(bool, TimeOopMap, false, \ 1265 "Time calls to GenerateOopMap::compute_map() in sum") \ 1266 \ 1267 develop(bool, TimeOopMap2, false, \ 1268 "Time calls to GenerateOopMap::compute_map() individually") \ 1269 \ 1270 develop(bool, TraceMonitorMismatch, false, \ 1271 "Trace monitor matching failures during OopMapGeneration") \ 1272 \ 1273 develop(bool, TraceOopMapRewrites, false, \ 1274 "Trace rewritting of method oops during oop map generation") \ 1275 \ 1276 develop(bool, TraceSafepoint, false, \ 1277 "Trace safepoint operations") \ 1278 \ 1279 develop(bool, TraceICBuffer, false, \ 1280 "Trace usage of IC buffer") \ 1281 \ 1282 develop(bool, TraceCompiledIC, false, \ 1283 "Trace changes of compiled IC") \ 1284 \ 1285 notproduct(bool, TraceZapDeadLocals, false, \ 1286 "Trace zapping dead locals") \ 1287 \ 1288 develop(bool, TraceStartupTime, false, \ 1289 "Trace setup time") \ 1290 \ 1291 develop(bool, TraceProtectionDomainVerification, false, \ 1292 "Trace protection domain verifcation") \ 1293 \ 1294 develop(bool, TraceClearedExceptions, false, \ 1295 "Prints when an exception is forcibly cleared") \ 1296 \ 1297 product(bool, TraceClassResolution, false, \ 1298 "Trace all constant pool resolutions (for debugging)") \ 1299 \ 1300 product(bool, TraceBiasedLocking, false, \ 1301 "Trace biased locking in JVM") \ 1302 \ 1303 product(bool, TraceMonitorInflation, false, \ 1304 "Trace monitor inflation in JVM") \ 1305 \ 1306 /* gc */ \ 1307 \ 1308 product(bool, UseSerialGC, false, \ 1309 "Use the serial garbage collector") \ 1310 \ 1311 product(bool, UseG1GC, false, \ 1312 "Use the Garbage-First garbage collector") \ 1313 \ 1314 product(bool, UseParallelGC, false, \ 1315 "Use the Parallel Scavenge garbage collector") \ 1316 \ 1317 product(bool, UseParallelOldGC, false, \ 1318 "Use the Parallel Old garbage collector") \ 1319 \ 1320 product(uintx, HeapMaximumCompactionInterval, 20, \ 1321 "How often should we maximally compact the heap (not allowing " \ 1322 "any dead space)") \ 1323 \ 1324 product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1325 "The collection count for the first maximum compaction") \ 1326 \ 1327 product(bool, UseMaximumCompactionOnSystemGC, true, \ 1328 "In the Parallel Old garbage collector maximum compaction for " \ 1329 "a system GC") \ 1330 \ 1331 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1332 "The mean used by the par compact dead wood" \ 1333 "limiter (a number between 0-100).") \ 1334 \ 1335 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1336 "The standard deviation used by the par compact dead wood" \ 1337 "limiter (a number between 0-100).") \ 1338 \ 1339 product(uintx, ParallelGCThreads, 0, \ 1340 "Number of parallel threads parallel gc will use") \ 1341 \ 1342 product(bool, UseDynamicNumberOfGCThreads, false, \ 1343 "Dynamically choose the number of parallel threads " \ 1344 "parallel gc will use") \ 1345 \ 1346 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 1347 "Force dynamic selection of the number of" \ 1348 "parallel threads parallel gc will use to aid debugging") \ 1349 \ 1350 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 1351 "Size of heap (bytes) per GC thread used in calculating the " \ 1352 "number of GC threads") \ 1353 \ 1354 product(bool, TraceDynamicGCThreads, false, \ 1355 "Trace the dynamic GC thread usage") \ 1356 \ 1357 develop(bool, ParallelOldGCSplitALot, false, \ 1358 "Provoke splitting (copying data from a young gen space to" \ 1359 "multiple destination spaces)") \ 1360 \ 1361 develop(uintx, ParallelOldGCSplitInterval, 3, \ 1362 "How often to provoke splitting a young gen space") \ 1363 \ 1364 product(uintx, ConcGCThreads, 0, \ 1365 "Number of threads concurrent gc will use") \ 1366 \ 1367 product(uintx, YoungPLABSize, 4096, \ 1368 "Size of young gen promotion labs (in HeapWords)") \ 1369 \ 1370 product(uintx, OldPLABSize, 1024, \ 1371 "Size of old gen promotion labs (in HeapWords)") \ 1372 \ 1373 product(uintx, GCTaskTimeStampEntries, 200, \ 1374 "Number of time stamp entries per gc worker thread") \ 1375 \ 1376 product(bool, AlwaysTenure, false, \ 1377 "Always tenure objects in eden. (ParallelGC only)") \ 1378 \ 1379 product(bool, NeverTenure, false, \ 1380 "Never tenure objects in eden, May tenure on overflow " \ 1381 "(ParallelGC only)") \ 1382 \ 1383 product(bool, ScavengeBeforeFullGC, true, \ 1384 "Scavenge youngest generation before each full GC, " \ 1385 "used with UseParallelGC") \ 1386 \ 1387 develop(bool, ScavengeWithObjectsInToSpace, false, \ 1388 "Allow scavenges to occur when to_space contains objects.") \ 1389 \ 1390 product(bool, UseConcMarkSweepGC, false, \ 1391 "Use Concurrent Mark-Sweep GC in the old generation") \ 1392 \ 1393 product(bool, ExplicitGCInvokesConcurrent, false, \ 1394 "A System.gc() request invokes a concurrent collection;" \ 1395 " (effective only when UseConcMarkSweepGC)") \ 1396 \ 1397 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1398 "A System.gc() request invokes a concurrent collection and " \ 1399 "also unloads classes during such a concurrent gc cycle " \ 1400 "(effective only when UseConcMarkSweepGC)") \ 1401 \ 1402 product(bool, GCLockerInvokesConcurrent, false, \ 1403 "The exit of a JNI CS necessitating a scavenge also" \ 1404 " kicks off a bkgrd concurrent collection") \ 1405 \ 1406 product(uintx, GCLockerEdenExpansionPercent, 5, \ 1407 "How much the GC can expand the eden by while the GC locker " \ 1408 "is active (as a percentage)") \ 1409 \ 1410 diagnostic(intx, GCLockerRetryAllocationCount, 2, \ 1411 "Number of times to retry allocations when" \ 1412 " blocked by the GC locker") \ 1413 \ 1414 develop(bool, UseCMSAdaptiveFreeLists, true, \ 1415 "Use Adaptive Free Lists in the CMS generation") \ 1416 \ 1417 develop(bool, UseAsyncConcMarkSweepGC, true, \ 1418 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1419 \ 1420 develop(bool, RotateCMSCollectionTypes, false, \ 1421 "Rotate the CMS collections among concurrent and STW") \ 1422 \ 1423 product(bool, UseCMSBestFit, true, \ 1424 "Use CMS best fit allocation strategy") \ 1425 \ 1426 product(bool, UseCMSCollectionPassing, true, \ 1427 "Use passing of collection from background to foreground") \ 1428 \ 1429 product(bool, UseParNewGC, false, \ 1430 "Use parallel threads in the new generation.") \ 1431 \ 1432 product(bool, ParallelGCVerbose, false, \ 1433 "Verbose output for parallel GC.") \ 1434 \ 1435 product(intx, ParallelGCBufferWastePct, 10, \ 1436 "wasted fraction of parallel allocation buffer.") \ 1437 \ 1438 diagnostic(bool, ParallelGCRetainPLAB, false, \ 1439 "Retain parallel allocation buffers across scavenges; " \ 1440 " -- disabled because this currently conflicts with " \ 1441 " parallel card scanning under certain conditions ") \ 1442 \ 1443 product(intx, TargetPLABWastePct, 10, \ 1444 "target wasted space in last buffer as pct of overall allocation")\ 1445 \ 1446 product(uintx, PLABWeight, 75, \ 1447 "Percentage (0-100) used to weight the current sample when" \ 1448 "computing exponentially decaying average for ResizePLAB.") \ 1449 \ 1450 product(bool, ResizePLAB, true, \ 1451 "Dynamically resize (survivor space) promotion labs") \ 1452 \ 1453 product(bool, PrintPLAB, false, \ 1454 "Print (survivor space) promotion labs sizing decisions") \ 1455 \ 1456 product(intx, ParGCArrayScanChunk, 50, \ 1457 "Scan a subset and push remainder, if array is bigger than this") \ 1458 \ 1459 product(bool, ParGCUseLocalOverflow, false, \ 1460 "Instead of a global overflow list, use local overflow stacks") \ 1461 \ 1462 product(bool, ParGCTrimOverflow, true, \ 1463 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ 1464 \ 1465 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 1466 "Whether we should simulate work queue overflow in ParNew") \ 1467 \ 1468 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1469 "An `interval' counter that determines how frequently " \ 1470 "we simulate overflow; a smaller number increases frequency") \ 1471 \ 1472 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1473 "The desired number of objects to claim from the overflow list") \ 1474 \ 1475 diagnostic(uintx, ParGCStridesPerThread, 2, \ 1476 "The number of strides per worker thread that we divide up the " \ 1477 "card table scanning work into") \ 1478 \ 1479 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 1480 "The number of cards in each chunk of the parallel chunks used " \ 1481 "during card table scanning") \ 1482 \ 1483 product(uintx, CMSParPromoteBlocksToClaim, 16, \ 1484 "Number of blocks to attempt to claim when refilling CMS LAB for "\ 1485 "parallel GC.") \ 1486 \ 1487 product(uintx, OldPLABWeight, 50, \ 1488 "Percentage (0-100) used to weight the current sample when" \ 1489 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ 1490 \ 1491 product(bool, ResizeOldPLAB, true, \ 1492 "Dynamically resize (old gen) promotion labs") \ 1493 \ 1494 product(bool, PrintOldPLAB, false, \ 1495 "Print (old gen) promotion labs sizing decisions") \ 1496 \ 1497 product(uintx, CMSOldPLABMin, 16, \ 1498 "Min size of CMS gen promotion lab caches per worker per blksize")\ 1499 \ 1500 product(uintx, CMSOldPLABMax, 1024, \ 1501 "Max size of CMS gen promotion lab caches per worker per blksize")\ 1502 \ 1503 product(uintx, CMSOldPLABNumRefills, 4, \ 1504 "Nominal number of refills of CMS gen promotion lab cache" \ 1505 " per worker per block size") \ 1506 \ 1507 product(bool, CMSOldPLABResizeQuicker, false, \ 1508 "Whether to react on-the-fly during a scavenge to a sudden" \ 1509 " change in block demand rate") \ 1510 \ 1511 product(uintx, CMSOldPLABToleranceFactor, 4, \ 1512 "The tolerance of the phase-change detector for on-the-fly" \ 1513 " PLAB resizing during a scavenge") \ 1514 \ 1515 product(uintx, CMSOldPLABReactivityFactor, 2, \ 1516 "The gain in the feedback loop for on-the-fly PLAB resizing" \ 1517 " during a scavenge") \ 1518 \ 1519 product(bool, AlwaysPreTouch, false, \ 1520 "It forces all freshly committed pages to be pre-touched.") \ 1521 \ 1522 product_pd(intx, CMSYoungGenPerWorker, \ 1523 "The maximum size of young gen chosen by default per GC worker " \ 1524 "thread available") \ 1525 \ 1526 product(bool, CMSIncrementalMode, false, \ 1527 "Whether CMS GC should operate in \"incremental\" mode") \ 1528 \ 1529 product(uintx, CMSIncrementalDutyCycle, 10, \ 1530 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ 1531 "CMSIncrementalPacing is enabled, then this is just the initial" \ 1532 "value") \ 1533 \ 1534 product(bool, CMSIncrementalPacing, true, \ 1535 "Whether the CMS incremental mode duty cycle should be " \ 1536 "automatically adjusted") \ 1537 \ 1538 product(uintx, CMSIncrementalDutyCycleMin, 0, \ 1539 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ 1540 "enabled (a percentage, 0-100)") \ 1541 \ 1542 product(uintx, CMSIncrementalSafetyFactor, 10, \ 1543 "Percentage (0-100) used to add conservatism when computing the " \ 1544 "duty cycle") \ 1545 \ 1546 product(uintx, CMSIncrementalOffset, 0, \ 1547 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ 1548 " is shifted to the right within the period between young GCs") \ 1549 \ 1550 product(uintx, CMSExpAvgFactor, 50, \ 1551 "Percentage (0-100) used to weight the current sample when" \ 1552 "computing exponential averages for CMS statistics.") \ 1553 \ 1554 product(uintx, CMS_FLSWeight, 75, \ 1555 "Percentage (0-100) used to weight the current sample when" \ 1556 "computing exponentially decating averages for CMS FLS statistics.") \ 1557 \ 1558 product(uintx, CMS_FLSPadding, 1, \ 1559 "The multiple of deviation from mean to use for buffering" \ 1560 "against volatility in free list demand.") \ 1561 \ 1562 product(uintx, FLSCoalescePolicy, 2, \ 1563 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ 1564 \ 1565 product(bool, FLSAlwaysCoalesceLarge, false, \ 1566 "CMS: Larger free blocks are always available for coalescing") \ 1567 \ 1568 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 1569 "CMS: the smaller the percentage the greater the coalition force")\ 1570 \ 1571 product(double, CMSSmallCoalSurplusPercent, 1.05, \ 1572 "CMS: the factor by which to inflate estimated demand of small" \ 1573 " block sizes to prevent coalescing with an adjoining block") \ 1574 \ 1575 product(double, CMSLargeCoalSurplusPercent, 0.95, \ 1576 "CMS: the factor by which to inflate estimated demand of large" \ 1577 " block sizes to prevent coalescing with an adjoining block") \ 1578 \ 1579 product(double, CMSSmallSplitSurplusPercent, 1.10, \ 1580 "CMS: the factor by which to inflate estimated demand of small" \ 1581 " block sizes to prevent splitting to supply demand for smaller" \ 1582 " blocks") \ 1583 \ 1584 product(double, CMSLargeSplitSurplusPercent, 1.00, \ 1585 "CMS: the factor by which to inflate estimated demand of large" \ 1586 " block sizes to prevent splitting to supply demand for smaller" \ 1587 " blocks") \ 1588 \ 1589 product(bool, CMSExtrapolateSweep, false, \ 1590 "CMS: cushion for block demand during sweep") \ 1591 \ 1592 product(uintx, CMS_SweepWeight, 75, \ 1593 "Percentage (0-100) used to weight the current sample when " \ 1594 "computing exponentially decaying average for inter-sweep " \ 1595 "duration") \ 1596 \ 1597 product(uintx, CMS_SweepPadding, 1, \ 1598 "The multiple of deviation from mean to use for buffering " \ 1599 "against volatility in inter-sweep duration.") \ 1600 \ 1601 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1602 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1603 "duration exceeds this threhold in milliseconds") \ 1604 \ 1605 develop(bool, CMSTraceIncrementalMode, false, \ 1606 "Trace CMS incremental mode") \ 1607 \ 1608 develop(bool, CMSTraceIncrementalPacing, false, \ 1609 "Trace CMS incremental mode pacing computation") \ 1610 \ 1611 develop(bool, CMSTraceThreadState, false, \ 1612 "Trace the CMS thread state (enable the trace_state() method)") \ 1613 \ 1614 product(bool, CMSClassUnloadingEnabled, true, \ 1615 "Whether class unloading enabled when using CMS GC") \ 1616 \ 1617 product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1618 "When CMS class unloading is enabled, the maximum CMS cycle count"\ 1619 " for which classes may not be unloaded") \ 1620 \ 1621 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ 1622 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ 1623 \ 1624 product(bool, UseCMSCompactAtFullCollection, true, \ 1625 "Use mark sweep compact at full collections") \ 1626 \ 1627 product(uintx, CMSFullGCsBeforeCompaction, 0, \ 1628 "Number of CMS full collection done before compaction if > 0") \ 1629 \ 1630 develop(intx, CMSDictionaryChoice, 0, \ 1631 "Use BinaryTreeDictionary as default in the CMS generation") \ 1632 \ 1633 product(uintx, CMSIndexedFreeListReplenish, 4, \ 1634 "Replenish an indexed free list with this number of chunks") \ 1635 \ 1636 product(bool, CMSReplenishIntermediate, true, \ 1637 "Replenish all intermediate free-list caches") \ 1638 \ 1639 product(bool, CMSSplitIndexedFreeListBlocks, true, \ 1640 "When satisfying batched demand, split blocks from the " \ 1641 "IndexedFreeList whose size is a multiple of requested size") \ 1642 \ 1643 product(bool, CMSLoopWarn, false, \ 1644 "Warn in case of excessive CMS looping") \ 1645 \ 1646 develop(bool, CMSOverflowEarlyRestoration, false, \ 1647 "Whether preserved marks should be restored early") \ 1648 \ 1649 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1650 "Size of marking stack") \ 1651 \ 1652 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1653 "Max size of marking stack") \ 1654 \ 1655 notproduct(bool, CMSMarkStackOverflowALot, false, \ 1656 "Whether we should simulate frequent marking stack / work queue" \ 1657 " overflow") \ 1658 \ 1659 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1660 "An `interval' counter that determines how frequently" \ 1661 " we simulate overflow; a smaller number increases frequency") \ 1662 \ 1663 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1664 "(Temporary, subject to experimentation)" \ 1665 "Maximum number of abortable preclean iterations, if > 0") \ 1666 \ 1667 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1668 "(Temporary, subject to experimentation)" \ 1669 "Maximum time in abortable preclean in ms") \ 1670 \ 1671 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1672 "(Temporary, subject to experimentation)" \ 1673 "Nominal minimum work per abortable preclean iteration") \ 1674 \ 1675 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1676 "(Temporary, subject to experimentation)" \ 1677 " Time that we sleep between iterations when not given" \ 1678 " enough work per iteration") \ 1679 \ 1680 product(uintx, CMSRescanMultiple, 32, \ 1681 "Size (in cards) of CMS parallel rescan task") \ 1682 \ 1683 product(uintx, CMSConcMarkMultiple, 32, \ 1684 "Size (in cards) of CMS concurrent MT marking task") \ 1685 \ 1686 product(bool, CMSAbortSemantics, false, \ 1687 "Whether abort-on-overflow semantics is implemented") \ 1688 \ 1689 product(bool, CMSParallelRemarkEnabled, true, \ 1690 "Whether parallel remark enabled (only if ParNewGC)") \ 1691 \ 1692 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1693 "Whether parallel remark of survivor space" \ 1694 " enabled (effective only if CMSParallelRemarkEnabled)") \ 1695 \ 1696 product(bool, CMSPLABRecordAlways, true, \ 1697 "Whether to always record survivor space PLAB bdries" \ 1698 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ 1699 \ 1700 product(bool, CMSConcurrentMTEnabled, true, \ 1701 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ 1702 \ 1703 product(bool, CMSPrecleaningEnabled, true, \ 1704 "Whether concurrent precleaning enabled") \ 1705 \ 1706 product(uintx, CMSPrecleanIter, 3, \ 1707 "Maximum number of precleaning iteration passes") \ 1708 \ 1709 product(uintx, CMSPrecleanNumerator, 2, \ 1710 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1711 " ratio") \ 1712 \ 1713 product(uintx, CMSPrecleanDenominator, 3, \ 1714 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1715 " ratio") \ 1716 \ 1717 product(bool, CMSPrecleanRefLists1, true, \ 1718 "Preclean ref lists during (initial) preclean phase") \ 1719 \ 1720 product(bool, CMSPrecleanRefLists2, false, \ 1721 "Preclean ref lists during abortable preclean phase") \ 1722 \ 1723 product(bool, CMSPrecleanSurvivors1, false, \ 1724 "Preclean survivors during (initial) preclean phase") \ 1725 \ 1726 product(bool, CMSPrecleanSurvivors2, true, \ 1727 "Preclean survivors during abortable preclean phase") \ 1728 \ 1729 product(uintx, CMSPrecleanThreshold, 1000, \ 1730 "Don't re-iterate if #dirty cards less than this") \ 1731 \ 1732 product(bool, CMSCleanOnEnter, true, \ 1733 "Clean-on-enter optimization for reducing number of dirty cards") \ 1734 \ 1735 product(uintx, CMSRemarkVerifyVariant, 1, \ 1736 "Choose variant (1,2) of verification following remark") \ 1737 \ 1738 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1739 "If Eden used is below this value, don't try to schedule remark") \ 1740 \ 1741 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1742 "The Eden occupancy % at which to try and schedule remark pause") \ 1743 \ 1744 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1745 "Start sampling Eden top at least before yg occupancy reaches" \ 1746 " 1/<ratio> of the size at which we plan to schedule remark") \ 1747 \ 1748 product(uintx, CMSSamplingGrain, 16*K, \ 1749 "The minimum distance between eden samples for CMS (see above)") \ 1750 \ 1751 product(bool, CMSScavengeBeforeRemark, false, \ 1752 "Attempt scavenge before the CMS remark step") \ 1753 \ 1754 develop(bool, CMSTraceSweeper, false, \ 1755 "Trace some actions of the CMS sweeper") \ 1756 \ 1757 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1758 "Don't drain below this size per parallel worker/thief") \ 1759 \ 1760 manageable(intx, CMSWaitDuration, 2000, \ 1761 "Time in milliseconds that CMS thread waits for young GC") \ 1762 \ 1763 develop(uintx, CMSCheckInterval, 1000, \ 1764 "Interval in milliseconds that CMS thread checks if it " \ 1765 "should start a collection cycle") \ 1766 \ 1767 product(bool, CMSYield, true, \ 1768 "Yield between steps of concurrent mark & sweep") \ 1769 \ 1770 product(uintx, CMSBitMapYieldQuantum, 10*M, \ 1771 "Bitmap operations should process at most this many bits" \ 1772 "between yields") \ 1773 \ 1774 product(bool, CMSDumpAtPromotionFailure, false, \ 1775 "Dump useful information about the state of the CMS old " \ 1776 " generation upon a promotion failure.") \ 1777 \ 1778 product(bool, CMSPrintChunksInDump, false, \ 1779 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1780 " more detailed information about the free chunks.") \ 1781 \ 1782 product(bool, CMSPrintObjectsInDump, false, \ 1783 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1784 " more detailed information about the allocated objects.") \ 1785 \ 1786 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1787 "Verify that all refs across the FLS boundary " \ 1788 " are to valid objects") \ 1789 \ 1790 diagnostic(bool, FLSVerifyLists, false, \ 1791 "Do lots of (expensive) FreeListSpace verification") \ 1792 \ 1793 diagnostic(bool, FLSVerifyIndexTable, false, \ 1794 "Do lots of (expensive) FLS index table verification") \ 1795 \ 1796 develop(bool, FLSVerifyDictionary, false, \ 1797 "Do lots of (expensive) FLS dictionary verification") \ 1798 \ 1799 develop(bool, VerifyBlockOffsetArray, false, \ 1800 "Do (expensive!) block offset array verification") \ 1801 \ 1802 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 1803 "Maintain _unallocated_block in BlockOffsetArray" \ 1804 " (currently applicable only to CMS collector)") \ 1805 \ 1806 develop(bool, TraceCMSState, false, \ 1807 "Trace the state of the CMS collection") \ 1808 \ 1809 product(intx, RefDiscoveryPolicy, 0, \ 1810 "Whether reference-based(0) or referent-based(1)") \ 1811 \ 1812 product(bool, ParallelRefProcEnabled, false, \ 1813 "Enable parallel reference processing whenever possible") \ 1814 \ 1815 product(bool, ParallelRefProcBalancingEnabled, true, \ 1816 "Enable balancing of reference processing queues") \ 1817 \ 1818 product(uintx, CMSTriggerRatio, 80, \ 1819 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1820 "allocated before a CMS collection cycle commences") \ 1821 \ 1822 product(uintx, CMSBootstrapOccupancy, 50, \ 1823 "Percentage CMS generation occupancy at which to " \ 1824 "initiate CMS collection for bootstrapping collection stats") \ 1825 \ 1826 product(intx, CMSInitiatingOccupancyFraction, -1, \ 1827 "Percentage CMS generation occupancy to start a CMS collection " \ 1828 "cycle. A negative value means that CMSTriggerRatio is used") \ 1829 \ 1830 product(uintx, InitiatingHeapOccupancyPercent, 45, \ 1831 "Percentage of the (entire) heap occupancy to start a " \ 1832 "concurrent GC cycle. It is used by GCs that trigger a " \ 1833 "concurrent GC cycle based on the occupancy of the entire heap, " \ 1834 "not just one of the generations (e.g., G1). A value of 0 " \ 1835 "denotes 'do constant GC cycles'.") \ 1836 \ 1837 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1838 "Only use occupancy as a crierion for starting a CMS collection") \ 1839 \ 1840 product(intx, CMSIsTooFullPercentage, 98, \ 1841 "An absolute ceiling above which CMS will always consider the " \ 1842 "unloading of classes when class unloading is enabled") \ 1843 \ 1844 develop(bool, CMSTestInFreeList, false, \ 1845 "Check if the coalesced range is already in the " \ 1846 "free lists as claimed") \ 1847 \ 1848 notproduct(bool, CMSVerifyReturnedBytes, false, \ 1849 "Check that all the garbage collected was returned to the " \ 1850 "free lists.") \ 1851 \ 1852 notproduct(bool, ScavengeALot, false, \ 1853 "Force scavenge at every Nth exit from the runtime system " \ 1854 "(N=ScavengeALotInterval)") \ 1855 \ 1856 develop(bool, FullGCALot, false, \ 1857 "Force full gc at every Nth exit from the runtime system " \ 1858 "(N=FullGCALotInterval)") \ 1859 \ 1860 notproduct(bool, GCALotAtAllSafepoints, false, \ 1861 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1862 \ 1863 product(bool, PrintPromotionFailure, false, \ 1864 "Print additional diagnostic information following " \ 1865 " promotion failure") \ 1866 \ 1867 notproduct(bool, PromotionFailureALot, false, \ 1868 "Use promotion failure handling on every youngest generation " \ 1869 "collection") \ 1870 \ 1871 develop(uintx, PromotionFailureALotCount, 1000, \ 1872 "Number of promotion failures occurring at ParGCAllocBuffer" \ 1873 "refill attempts (ParNew) or promotion attempts " \ 1874 "(other young collectors) ") \ 1875 \ 1876 develop(uintx, PromotionFailureALotInterval, 5, \ 1877 "Total collections between promotion failures alot") \ 1878 \ 1879 experimental(intx, WorkStealingSleepMillis, 1, \ 1880 "Sleep time when sleep is used for yields") \ 1881 \ 1882 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 1883 "Number of yields before a sleep is done during workstealing") \ 1884 \ 1885 experimental(uintx, WorkStealingHardSpins, 4096, \ 1886 "Number of iterations in a spin loop between checks on " \ 1887 "time out of hard spin") \ 1888 \ 1889 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 1890 "Ratio of hard spins to calls to yield") \ 1891 \ 1892 develop(uintx, ObjArrayMarkingStride, 512, \ 1893 "Number of ObjArray elements to push onto the marking stack" \ 1894 "before pushing a continuation entry") \ 1895 \ 1896 develop(bool, MetadataAllocationFailALot, false, \ 1897 "Fail metadata allocations at intervals controlled by " \ 1898 "MetadataAllocationFailALotInterval") \ 1899 \ 1900 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 1901 "metadata allocation failure alot interval") \ 1902 \ 1903 develop(bool, MetaDataDeallocateALot, false, \ 1904 "Deallocation bunches of metadata at intervals controlled by " \ 1905 "MetaDataAllocateALotInterval") \ 1906 \ 1907 develop(uintx, MetaDataDeallocateALotInterval, 100, \ 1908 "Metadata deallocation alot interval") \ 1909 \ 1910 develop(bool, TraceMetadataChunkAllocation, false, \ 1911 "Trace chunk metadata allocations") \ 1912 \ 1913 product(bool, TraceMetadataHumongousAllocation, false, \ 1914 "Trace humongous metadata allocations") \ 1915 \ 1916 develop(bool, TraceMetavirtualspaceAllocation, false, \ 1917 "Trace virtual space metadata allocations") \ 1918 \ 1919 notproduct(bool, ExecuteInternalVMTests, false, \ 1920 "Enable execution of internal VM tests.") \ 1921 \ 1922 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 1923 \ 1924 product_pd(bool, ResizeTLAB, \ 1925 "Dynamically resize tlab size for threads") \ 1926 \ 1927 product(bool, ZeroTLAB, false, \ 1928 "Zero out the newly created TLAB") \ 1929 \ 1930 product(bool, FastTLABRefill, true, \ 1931 "Use fast TLAB refill code") \ 1932 \ 1933 product(bool, PrintTLAB, false, \ 1934 "Print various TLAB related information") \ 1935 \ 1936 product(bool, TLABStats, true, \ 1937 "Print various TLAB related information") \ 1938 \ 1939 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ 1940 "Enable LowMemoryProtection")) \ 1941 \ 1942 product_pd(bool, NeverActAsServerClassMachine, \ 1943 "Never act like a server-class machine") \ 1944 \ 1945 product(bool, AlwaysActAsServerClassMachine, false, \ 1946 "Always act like a server-class machine") \ 1947 \ 1948 product_pd(uint64_t, MaxRAM, \ 1949 "Real memory size (in bytes) used to set maximum heap size") \ 1950 \ 1951 product(uintx, ErgoHeapSizeLimit, 0, \ 1952 "Maximum ergonomically set heap size (in bytes); zero means use " \ 1953 "MaxRAM / MaxRAMFraction") \ 1954 \ 1955 product(uintx, MaxRAMFraction, 4, \ 1956 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1957 "size") \ 1958 \ 1959 product(uintx, DefaultMaxRAMFraction, 4, \ 1960 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1961 "size; deprecated: to be renamed to MaxRAMFraction") \ 1962 \ 1963 product(uintx, MinRAMFraction, 2, \ 1964 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ 1965 "size on systems with small physical memory size") \ 1966 \ 1967 product(uintx, InitialRAMFraction, 64, \ 1968 "Fraction (1/n) of real memory used for initial heap size") \ 1969 \ 1970 develop(uintx, MaxVirtMemFraction, 2, \ 1971 "Maximum fraction (1/n) of virtual memory used for ergonomically" \ 1972 "determining maximum heap size") \ 1973 \ 1974 product(bool, UseAutoGCSelectPolicy, false, \ 1975 "Use automatic collection selection policy") \ 1976 \ 1977 product(uintx, AutoGCSelectPauseMillis, 5000, \ 1978 "Automatic GC selection pause threshhold in ms") \ 1979 \ 1980 product(bool, UseAdaptiveSizePolicy, true, \ 1981 "Use adaptive generation sizing policies") \ 1982 \ 1983 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 1984 "Use adaptive survivor sizing policies") \ 1985 \ 1986 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 1987 "Use adaptive young-old sizing policies at minor collections") \ 1988 \ 1989 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 1990 "Use adaptive young-old sizing policies at major collections") \ 1991 \ 1992 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 1993 "Use statistics from System.GC for adaptive size policy") \ 1994 \ 1995 product(bool, UseAdaptiveGCBoundary, false, \ 1996 "Allow young-old boundary to move") \ 1997 \ 1998 develop(bool, TraceAdaptiveGCBoundary, false, \ 1999 "Trace young-old boundary moves") \ 2000 \ 2001 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 2002 "Resize the virtual spaces of the young or old generations") \ 2003 \ 2004 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 2005 "Policy for changeing generation size for throughput goals") \ 2006 \ 2007 product(uintx, AdaptiveSizePausePolicy, 0, \ 2008 "Policy for changing generation size for pause goals") \ 2009 \ 2010 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 2011 "Adjust tenured generation to achive a minor pause goal") \ 2012 \ 2013 develop(bool, PSAdjustYoungGenForMajorPause, false, \ 2014 "Adjust young generation to achive a major pause goal") \ 2015 \ 2016 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 2017 "Number of steps where heuristics is used before data is used") \ 2018 \ 2019 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2020 "Number of collections before the adaptive sizing is started") \ 2021 \ 2022 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2023 "Collecton interval for printing information; zero => never") \ 2024 \ 2025 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2026 "Use adaptive minimum footprint as a goal") \ 2027 \ 2028 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2029 "Weight given to exponential resizing, between 0 and 100") \ 2030 \ 2031 product(uintx, AdaptiveTimeWeight, 25, \ 2032 "Weight given to time in adaptive policy, between 0 and 100") \ 2033 \ 2034 product(uintx, PausePadding, 1, \ 2035 "How much buffer to keep for pause time") \ 2036 \ 2037 product(uintx, PromotedPadding, 3, \ 2038 "How much buffer to keep for promotion failure") \ 2039 \ 2040 product(uintx, SurvivorPadding, 3, \ 2041 "How much buffer to keep for survivor overflow") \ 2042 \ 2043 product(uintx, ThresholdTolerance, 10, \ 2044 "Allowed collection cost difference between generations") \ 2045 \ 2046 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 2047 "If collection costs are within margin, reduce both by full " \ 2048 "delta") \ 2049 \ 2050 product(uintx, YoungGenerationSizeIncrement, 20, \ 2051 "Adaptive size percentage change in young generation") \ 2052 \ 2053 product(uintx, YoungGenerationSizeSupplement, 80, \ 2054 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 2055 \ 2056 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 2057 "Decay factor to YoungedGenerationSizeSupplement") \ 2058 \ 2059 product(uintx, TenuredGenerationSizeIncrement, 20, \ 2060 "Adaptive size percentage change in tenured generation") \ 2061 \ 2062 product(uintx, TenuredGenerationSizeSupplement, 80, \ 2063 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 2064 \ 2065 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 2066 "Decay factor to TenuredGenerationSizeIncrement") \ 2067 \ 2068 product(uintx, MaxGCPauseMillis, max_uintx, \ 2069 "Adaptive size policy maximum GC pause time goal in msec, " \ 2070 "or (G1 Only) the max. GC time per MMU time slice") \ 2071 \ 2072 product(uintx, GCPauseIntervalMillis, 0, \ 2073 "Time slice for MMU specification") \ 2074 \ 2075 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 2076 "Adaptive size policy maximum GC minor pause time goal in msec") \ 2077 \ 2078 product(uintx, GCTimeRatio, 99, \ 2079 "Adaptive size policy application time to GC time ratio") \ 2080 \ 2081 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 2082 "Adaptive size scale down factor for shrinking") \ 2083 \ 2084 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 2085 "Adaptive size decays the major cost for long major intervals") \ 2086 \ 2087 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 2088 "Time scale over which major costs decay") \ 2089 \ 2090 product(uintx, MinSurvivorRatio, 3, \ 2091 "Minimum ratio of young generation/survivor space size") \ 2092 \ 2093 product(uintx, InitialSurvivorRatio, 8, \ 2094 "Initial ratio of eden/survivor space size") \ 2095 \ 2096 product(uintx, BaseFootPrintEstimate, 256*M, \ 2097 "Estimate of footprint other than Java Heap") \ 2098 \ 2099 product(bool, UseGCOverheadLimit, true, \ 2100 "Use policy to limit of proportion of time spent in GC " \ 2101 "before an OutOfMemory error is thrown") \ 2102 \ 2103 product(uintx, GCTimeLimit, 98, \ 2104 "Limit of proportion of time spent in GC before an OutOfMemory" \ 2105 "error is thrown (used with GCHeapFreeLimit)") \ 2106 \ 2107 product(uintx, GCHeapFreeLimit, 2, \ 2108 "Minimum percentage of free space after a full GC before an " \ 2109 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 2110 \ 2111 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 2112 "Number of consecutive collections before gc time limit fires") \ 2113 \ 2114 product(bool, PrintAdaptiveSizePolicy, false, \ 2115 "Print information about AdaptiveSizePolicy") \ 2116 \ 2117 product(intx, PrefetchCopyIntervalInBytes, -1, \ 2118 "How far ahead to prefetch destination area (<= 0 means off)") \ 2119 \ 2120 product(intx, PrefetchScanIntervalInBytes, -1, \ 2121 "How far ahead to prefetch scan area (<= 0 means off)") \ 2122 \ 2123 product(intx, PrefetchFieldsAhead, -1, \ 2124 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 2125 \ 2126 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 2127 "Verify system before exiting") \ 2128 \ 2129 diagnostic(bool, VerifyBeforeGC, false, \ 2130 "Verify memory system before GC") \ 2131 \ 2132 diagnostic(bool, VerifyAfterGC, false, \ 2133 "Verify memory system after GC") \ 2134 \ 2135 diagnostic(bool, VerifyDuringGC, false, \ 2136 "Verify memory system during GC (between phases)") \ 2137 \ 2138 diagnostic(bool, GCParallelVerificationEnabled, true, \ 2139 "Enable parallel memory system verification") \ 2140 \ 2141 diagnostic(bool, DeferInitialCardMark, false, \ 2142 "When +ReduceInitialCardMarks, explicitly defer any that " \ 2143 "may arise from new_pre_store_barrier") \ 2144 \ 2145 diagnostic(bool, VerifyRememberedSets, false, \ 2146 "Verify GC remembered sets") \ 2147 \ 2148 diagnostic(bool, VerifyObjectStartArray, true, \ 2149 "Verify GC object start array if verify before/after") \ 2150 \ 2151 product(bool, DisableExplicitGC, false, \ 2152 "Tells whether calling System.gc() does a full GC") \ 2153 \ 2154 notproduct(bool, CheckMemoryInitialization, false, \ 2155 "Checks memory initialization") \ 2156 \ 2157 product(bool, CollectGen0First, false, \ 2158 "Collect youngest generation before each full GC") \ 2159 \ 2160 diagnostic(bool, BindCMSThreadToCPU, false, \ 2161 "Bind CMS Thread to CPU if possible") \ 2162 \ 2163 diagnostic(uintx, CPUForCMSThread, 0, \ 2164 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 2165 \ 2166 product(bool, BindGCTaskThreadsToCPUs, false, \ 2167 "Bind GCTaskThreads to CPUs if possible") \ 2168 \ 2169 product(bool, UseGCTaskAffinity, false, \ 2170 "Use worker affinity when asking for GCTasks") \ 2171 \ 2172 product(uintx, ProcessDistributionStride, 4, \ 2173 "Stride through processors when distributing processes") \ 2174 \ 2175 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 2176 "number of times the coordinator GC thread will sleep while " \ 2177 "yielding before giving up and resuming GC") \ 2178 \ 2179 product(uintx, CMSYieldSleepCount, 0, \ 2180 "number of times a GC thread (minus the coordinator) " \ 2181 "will sleep while yielding before giving up and resuming GC") \ 2182 \ 2183 /* gc tracing */ \ 2184 manageable(bool, PrintGC, false, \ 2185 "Print message at garbage collect") \ 2186 \ 2187 manageable(bool, PrintGCDetails, false, \ 2188 "Print more details at garbage collect") \ 2189 \ 2190 manageable(bool, PrintGCDateStamps, false, \ 2191 "Print date stamps at garbage collect") \ 2192 \ 2193 manageable(bool, PrintGCTimeStamps, false, \ 2194 "Print timestamps at garbage collect") \ 2195 \ 2196 product(bool, PrintGCTaskTimeStamps, false, \ 2197 "Print timestamps for individual gc worker thread tasks") \ 2198 \ 2199 develop(intx, ConcGCYieldTimeout, 0, \ 2200 "If non-zero, assert that GC threads yield within this # of ms.") \ 2201 \ 2202 notproduct(bool, TraceMarkSweep, false, \ 2203 "Trace mark sweep") \ 2204 \ 2205 product(bool, PrintReferenceGC, false, \ 2206 "Print times spent handling reference objects during GC " \ 2207 " (enabled only when PrintGCDetails)") \ 2208 \ 2209 develop(bool, TraceReferenceGC, false, \ 2210 "Trace handling of soft/weak/final/phantom references") \ 2211 \ 2212 develop(bool, TraceFinalizerRegistration, false, \ 2213 "Trace registration of final references") \ 2214 \ 2215 notproduct(bool, TraceScavenge, false, \ 2216 "Trace scavenge") \ 2217 \ 2218 product_rw(bool, TraceClassLoading, false, \ 2219 "Trace all classes loaded") \ 2220 \ 2221 product(bool, TraceClassLoadingPreorder, false, \ 2222 "Trace all classes loaded in order referenced (not loaded)") \ 2223 \ 2224 product_rw(bool, TraceClassUnloading, false, \ 2225 "Trace unloading of classes") \ 2226 \ 2227 product_rw(bool, TraceLoaderConstraints, false, \ 2228 "Trace loader constraints") \ 2229 \ 2230 develop(bool, TraceClassLoaderData, false, \ 2231 "Trace class loader loader_data lifetime") \ 2232 \ 2233 product(uintx, InitialBootClassLoaderMetaspaceSize, \ 2234 NOT_LP64(2200*K) LP64_ONLY(4*M), \ 2235 "Initial size of the boot class loader data metaspace") \ 2236 \ 2237 product(bool, TraceGen0Time, false, \ 2238 "Trace accumulated time for Gen 0 collection") \ 2239 \ 2240 product(bool, TraceGen1Time, false, \ 2241 "Trace accumulated time for Gen 1 collection") \ 2242 \ 2243 product(bool, PrintTenuringDistribution, false, \ 2244 "Print tenuring age information") \ 2245 \ 2246 product_rw(bool, PrintHeapAtGC, false, \ 2247 "Print heap layout before and after each GC") \ 2248 \ 2249 product_rw(bool, PrintHeapAtGCExtended, false, \ 2250 "Prints extended information about the layout of the heap " \ 2251 "when -XX:+PrintHeapAtGC is set") \ 2252 \ 2253 product(bool, PrintHeapAtSIGBREAK, true, \ 2254 "Print heap layout in response to SIGBREAK") \ 2255 \ 2256 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 2257 "Print a class histogram before any major stop-world GC") \ 2258 \ 2259 manageable(bool, PrintClassHistogramAfterFullGC, false, \ 2260 "Print a class histogram after any major stop-world GC") \ 2261 \ 2262 manageable(bool, PrintClassHistogram, false, \ 2263 "Print a histogram of class instances") \ 2264 \ 2265 develop(bool, TraceWorkGang, false, \ 2266 "Trace activities of work gangs") \ 2267 \ 2268 product(bool, TraceParallelOldGCTasks, false, \ 2269 "Trace multithreaded GC activity") \ 2270 \ 2271 develop(bool, TraceBlockOffsetTable, false, \ 2272 "Print BlockOffsetTable maps") \ 2273 \ 2274 develop(bool, TraceCardTableModRefBS, false, \ 2275 "Print CardTableModRefBS maps") \ 2276 \ 2277 develop(bool, TraceGCTaskManager, false, \ 2278 "Trace actions of the GC task manager") \ 2279 \ 2280 develop(bool, TraceGCTaskQueue, false, \ 2281 "Trace actions of the GC task queues") \ 2282 \ 2283 diagnostic(bool, TraceGCTaskThread, false, \ 2284 "Trace actions of the GC task threads") \ 2285 \ 2286 product(bool, PrintParallelOldGCPhaseTimes, false, \ 2287 "Print the time taken by each parallel old gc phase." \ 2288 "PrintGCDetails must also be enabled.") \ 2289 \ 2290 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2291 "Trace parallel old gc marking phase") \ 2292 \ 2293 develop(bool, TraceParallelOldGCSummaryPhase, false, \ 2294 "Trace parallel old gc summary phase") \ 2295 \ 2296 develop(bool, TraceParallelOldGCCompactionPhase, false, \ 2297 "Trace parallel old gc compaction phase") \ 2298 \ 2299 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2300 "Trace parallel old gc dense prefix computation") \ 2301 \ 2302 develop(bool, IgnoreLibthreadGPFault, false, \ 2303 "Suppress workaround for libthread GP fault") \ 2304 \ 2305 product(bool, PrintJNIGCStalls, false, \ 2306 "Print diagnostic message when GC is stalled" \ 2307 "by JNI critical section") \ 2308 \ 2309 /* GC log rotation setting */ \ 2310 \ 2311 product(bool, UseGCLogFileRotation, false, \ 2312 "Prevent large gclog file for long running app. " \ 2313 "Requires -Xloggc:<filename>") \ 2314 \ 2315 product(uintx, NumberOfGCLogFiles, 0, \ 2316 "Number of gclog files in rotation, " \ 2317 "Default: 0, no rotation") \ 2318 \ 2319 product(uintx, GCLogFileSize, 0, \ 2320 "GC log file size, Default: 0 bytes, no rotation " \ 2321 "Only valid with UseGCLogFileRotation") \ 2322 \ 2323 /* JVMTI heap profiling */ \ 2324 \ 2325 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2326 "Trace JVMTI object tagging calls") \ 2327 \ 2328 diagnostic(bool, VerifyBeforeIteration, false, \ 2329 "Verify memory system before JVMTI iteration") \ 2330 \ 2331 /* compiler interface */ \ 2332 \ 2333 develop(bool, CIPrintCompilerName, false, \ 2334 "when CIPrint is active, print the name of the active compiler") \ 2335 \ 2336 develop(bool, CIPrintCompileQueue, false, \ 2337 "display the contents of the compile queue whenever a " \ 2338 "compilation is enqueued") \ 2339 \ 2340 develop(bool, CIPrintRequests, false, \ 2341 "display every request for compilation") \ 2342 \ 2343 product(bool, CITime, false, \ 2344 "collect timing information for compilation") \ 2345 \ 2346 develop(bool, CITimeEach, false, \ 2347 "display timing information after each successful compilation") \ 2348 \ 2349 develop(bool, CICountOSR, false, \ 2350 "use a separate counter when assigning ids to osr compilations") \ 2351 \ 2352 develop(bool, CICompileNatives, true, \ 2353 "compile native methods if supported by the compiler") \ 2354 \ 2355 develop_pd(bool, CICompileOSR, \ 2356 "compile on stack replacement methods if supported by the " \ 2357 "compiler") \ 2358 \ 2359 develop(bool, CIPrintMethodCodes, false, \ 2360 "print method bytecodes of the compiled code") \ 2361 \ 2362 develop(bool, CIPrintTypeFlow, false, \ 2363 "print the results of ciTypeFlow analysis") \ 2364 \ 2365 develop(bool, CITraceTypeFlow, false, \ 2366 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2367 \ 2368 develop(intx, OSROnlyBCI, -1, \ 2369 "OSR only at this bci. Negative values mean exclude that bci") \ 2370 \ 2371 /* compiler */ \ 2372 \ 2373 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2374 "Number of compiler threads to run") \ 2375 \ 2376 product(intx, CompilationPolicyChoice, 0, \ 2377 "which compilation policy (0/1)") \ 2378 \ 2379 develop(bool, UseStackBanging, true, \ 2380 "use stack banging for stack overflow checks (required for " \ 2381 "proper StackOverflow handling; disable only to measure cost " \ 2382 "of stackbanging)") \ 2383 \ 2384 develop(bool, UseStrictFP, true, \ 2385 "use strict fp if modifier strictfp is set") \ 2386 \ 2387 develop(bool, GenerateSynchronizationCode, true, \ 2388 "generate locking/unlocking code for synchronized methods and " \ 2389 "monitors") \ 2390 \ 2391 develop(bool, GenerateCompilerNullChecks, true, \ 2392 "Generate explicit null checks for loads/stores/calls") \ 2393 \ 2394 develop(bool, GenerateRangeChecks, true, \ 2395 "Generate range checks for array accesses") \ 2396 \ 2397 develop_pd(bool, ImplicitNullChecks, \ 2398 "generate code for implicit null checks") \ 2399 \ 2400 product(bool, PrintSafepointStatistics, false, \ 2401 "print statistics about safepoint synchronization") \ 2402 \ 2403 product(intx, PrintSafepointStatisticsCount, 300, \ 2404 "total number of safepoint statistics collected " \ 2405 "before printing them out") \ 2406 \ 2407 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2408 "print safepoint statistics only when safepoint takes" \ 2409 " more than PrintSafepointSatisticsTimeout in millis") \ 2410 \ 2411 product(bool, TraceSafepointCleanupTime, false, \ 2412 "print the break down of clean up tasks performed during" \ 2413 " safepoint") \ 2414 \ 2415 product(bool, Inline, true, \ 2416 "enable inlining") \ 2417 \ 2418 product(bool, ClipInlining, true, \ 2419 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2420 \ 2421 develop(bool, UseCHA, true, \ 2422 "enable CHA") \ 2423 \ 2424 product(bool, UseTypeProfile, true, \ 2425 "Check interpreter profile for historically monomorphic calls") \ 2426 \ 2427 notproduct(bool, TimeCompiler, false, \ 2428 "time the compiler") \ 2429 \ 2430 diagnostic(bool, PrintInlining, false, \ 2431 "prints inlining optimizations") \ 2432 \ 2433 product(bool, UsePopCountInstruction, false, \ 2434 "Use population count instruction") \ 2435 \ 2436 develop(bool, EagerInitialization, false, \ 2437 "Eagerly initialize classes if possible") \ 2438 \ 2439 develop(bool, TraceMethodReplacement, false, \ 2440 "Print when methods are replaced do to recompilation") \ 2441 \ 2442 develop(bool, PrintMethodFlushing, false, \ 2443 "print the nmethods being flushed") \ 2444 \ 2445 develop(bool, UseRelocIndex, false, \ 2446 "use an index to speed random access to relocations") \ 2447 \ 2448 develop(bool, StressCodeBuffers, false, \ 2449 "Exercise code buffer expansion and other rare state changes") \ 2450 \ 2451 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2452 "Generate extra debugging info for non-safepoints in nmethods") \ 2453 \ 2454 product(bool, PrintVMOptions, false, \ 2455 "Print flags that appeared on the command line") \ 2456 \ 2457 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2458 "Ignore unrecognized VM options") \ 2459 \ 2460 product(bool, PrintCommandLineFlags, false, \ 2461 "Print flags specified on command line or set by ergonomics") \ 2462 \ 2463 product(bool, PrintFlagsInitial, false, \ 2464 "Print all VM flags before argument processing and exit VM") \ 2465 \ 2466 product(bool, PrintFlagsFinal, false, \ 2467 "Print all VM flags after argument and ergonomic processing") \ 2468 \ 2469 notproduct(bool, PrintFlagsWithComments, false, \ 2470 "Print all VM flags with default values and descriptions and exit")\ 2471 \ 2472 diagnostic(bool, SerializeVMOutput, true, \ 2473 "Use a mutex to serialize output to tty and hotspot.log") \ 2474 \ 2475 diagnostic(bool, DisplayVMOutput, true, \ 2476 "Display all VM output on the tty, independently of LogVMOutput") \ 2477 \ 2478 diagnostic(bool, LogVMOutput, trueInDebug, \ 2479 "Save VM output to hotspot.log, or to LogFile") \ 2480 \ 2481 diagnostic(ccstr, LogFile, NULL, \ 2482 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ 2483 \ 2484 product(ccstr, ErrorFile, NULL, \ 2485 "If an error occurs, save the error data to this file " \ 2486 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2487 \ 2488 product(bool, DisplayVMOutputToStderr, false, \ 2489 "If DisplayVMOutput is true, display all VM output to stderr") \ 2490 \ 2491 product(bool, DisplayVMOutputToStdout, false, \ 2492 "If DisplayVMOutput is true, display all VM output to stdout") \ 2493 \ 2494 product(bool, UseHeavyMonitors, false, \ 2495 "use heavyweight instead of lightweight Java monitors") \ 2496 \ 2497 product(bool, PrintStringTableStatistics, false, \ 2498 "print statistics about the StringTable and SymbolTable") \ 2499 \ 2500 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2501 "print histogram of the symbol table") \ 2502 \ 2503 notproduct(bool, ExitVMOnVerifyError, false, \ 2504 "standard exit from VM if bytecode verify error " \ 2505 "(only in debug mode)") \ 2506 \ 2507 notproduct(ccstr, AbortVMOnException, NULL, \ 2508 "Call fatal if this exception is thrown. Example: " \ 2509 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2510 \ 2511 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ 2512 "Call fatal if the exception pointed by AbortVMOnException " \ 2513 "has this message.") \ 2514 \ 2515 develop(bool, DebugVtables, false, \ 2516 "add debugging code to vtable dispatch") \ 2517 \ 2518 develop(bool, PrintVtables, false, \ 2519 "print vtables when printing klass") \ 2520 \ 2521 notproduct(bool, PrintVtableStats, false, \ 2522 "print vtables stats at end of run") \ 2523 \ 2524 develop(bool, TraceCreateZombies, false, \ 2525 "trace creation of zombie nmethods") \ 2526 \ 2527 notproduct(bool, IgnoreLockingAssertions, false, \ 2528 "disable locking assertions (for speed)") \ 2529 \ 2530 product(bool, RangeCheckElimination, true, \ 2531 "Split loop iterations to eliminate range checks") \ 2532 \ 2533 develop_pd(bool, UncommonNullCast, \ 2534 "track occurrences of null in casts; adjust compiler tactics") \ 2535 \ 2536 develop(bool, TypeProfileCasts, true, \ 2537 "treat casts like calls for purposes of type profiling") \ 2538 \ 2539 develop(bool, DelayCompilationDuringStartup, true, \ 2540 "Delay invoking the compiler until main application class is " \ 2541 "loaded") \ 2542 \ 2543 develop(bool, CompileTheWorld, false, \ 2544 "Compile all methods in all classes in bootstrap class path " \ 2545 "(stress test)") \ 2546 \ 2547 develop(bool, CompileTheWorldPreloadClasses, true, \ 2548 "Preload all classes used by a class before start loading") \ 2549 \ 2550 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 2551 "Force a safepoint every n compiles so sweeper can keep up") \ 2552 \ 2553 develop(bool, FillDelaySlots, true, \ 2554 "Fill delay slots (on SPARC only)") \ 2555 \ 2556 develop(bool, TimeLivenessAnalysis, false, \ 2557 "Time computation of bytecode liveness analysis") \ 2558 \ 2559 develop(bool, TraceLivenessGen, false, \ 2560 "Trace the generation of liveness analysis information") \ 2561 \ 2562 notproduct(bool, TraceLivenessQuery, false, \ 2563 "Trace queries of liveness analysis information") \ 2564 \ 2565 notproduct(bool, CollectIndexSetStatistics, false, \ 2566 "Collect information about IndexSets") \ 2567 \ 2568 develop(bool, UseLoopSafepoints, true, \ 2569 "Generate Safepoint nodes in every loop") \ 2570 \ 2571 develop(intx, FastAllocateSizeLimit, 128*K, \ 2572 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2573 "Inline allocations larger than this in doublewords must go slow")\ 2574 \ 2575 product(bool, AggressiveOpts, false, \ 2576 "Enable aggressive optimizations - see arguments.cpp") \ 2577 \ 2578 product(bool, UseStringCache, false, \ 2579 "Enable String cache capabilities on String.java") \ 2580 \ 2581 /* statistics */ \ 2582 develop(bool, CountCompiledCalls, false, \ 2583 "counts method invocations") \ 2584 \ 2585 notproduct(bool, CountRuntimeCalls, false, \ 2586 "counts VM runtime calls") \ 2587 \ 2588 develop(bool, CountJNICalls, false, \ 2589 "counts jni method invocations") \ 2590 \ 2591 notproduct(bool, CountJVMCalls, false, \ 2592 "counts jvm method invocations") \ 2593 \ 2594 notproduct(bool, CountRemovableExceptions, false, \ 2595 "count exceptions that could be replaced by branches due to " \ 2596 "inlining") \ 2597 \ 2598 notproduct(bool, ICMissHistogram, false, \ 2599 "produce histogram of IC misses") \ 2600 \ 2601 notproduct(bool, PrintClassStatistics, false, \ 2602 "prints class statistics at end of run") \ 2603 \ 2604 notproduct(bool, PrintMethodStatistics, false, \ 2605 "prints method statistics at end of run") \ 2606 \ 2607 /* interpreter */ \ 2608 develop(bool, ClearInterpreterLocals, false, \ 2609 "Always clear local variables of interpreter activations upon " \ 2610 "entry") \ 2611 \ 2612 product_pd(bool, RewriteBytecodes, \ 2613 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2614 \ 2615 product_pd(bool, RewriteFrequentPairs, \ 2616 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2617 \ 2618 diagnostic(bool, PrintInterpreter, false, \ 2619 "Prints the generated interpreter code") \ 2620 \ 2621 product(bool, UseInterpreter, true, \ 2622 "Use interpreter for non-compiled methods") \ 2623 \ 2624 develop(bool, UseFastSignatureHandlers, true, \ 2625 "Use fast signature handlers for native calls") \ 2626 \ 2627 product(bool, UseLoopCounter, true, \ 2628 "Increment invocation counter on backward branch") \ 2629 \ 2630 product(bool, UseFastEmptyMethods, true, \ 2631 "Use fast method entry code for empty methods") \ 2632 \ 2633 product(bool, UseFastAccessorMethods, true, \ 2634 "Use fast method entry code for accessor methods") \ 2635 \ 2636 product_pd(bool, UseOnStackReplacement, \ 2637 "Use on stack replacement, calls runtime if invoc. counter " \ 2638 "overflows in loop") \ 2639 \ 2640 notproduct(bool, TraceOnStackReplacement, false, \ 2641 "Trace on stack replacement") \ 2642 \ 2643 product_pd(bool, PreferInterpreterNativeStubs, \ 2644 "Use always interpreter stubs for native methods invoked via " \ 2645 "interpreter") \ 2646 \ 2647 develop(bool, CountBytecodes, false, \ 2648 "Count number of bytecodes executed") \ 2649 \ 2650 develop(bool, PrintBytecodeHistogram, false, \ 2651 "Print histogram of the executed bytecodes") \ 2652 \ 2653 develop(bool, PrintBytecodePairHistogram, false, \ 2654 "Print histogram of the executed bytecode pairs") \ 2655 \ 2656 diagnostic(bool, PrintSignatureHandlers, false, \ 2657 "Print code generated for native method signature handlers") \ 2658 \ 2659 develop(bool, VerifyOops, false, \ 2660 "Do plausibility checks for oops") \ 2661 \ 2662 develop(bool, CheckUnhandledOops, false, \ 2663 "Check for unhandled oops in VM code") \ 2664 \ 2665 develop(bool, VerifyJNIFields, trueInDebug, \ 2666 "Verify jfieldIDs for instance fields") \ 2667 \ 2668 notproduct(bool, VerifyJNIEnvThread, false, \ 2669 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2670 "from JNI") \ 2671 \ 2672 develop(bool, VerifyFPU, false, \ 2673 "Verify FPU state (check for NaN's, etc.)") \ 2674 \ 2675 develop(bool, VerifyThread, false, \ 2676 "Watch the thread register for corruption (SPARC only)") \ 2677 \ 2678 develop(bool, VerifyActivationFrameSize, false, \ 2679 "Verify that activation frame didn't become smaller than its " \ 2680 "minimal size") \ 2681 \ 2682 develop(bool, TraceFrequencyInlining, false, \ 2683 "Trace frequency based inlining") \ 2684 \ 2685 develop_pd(bool, InlineIntrinsics, \ 2686 "Inline intrinsics that can be statically resolved") \ 2687 \ 2688 product_pd(bool, ProfileInterpreter, \ 2689 "Profile at the bytecode level during interpretation") \ 2690 \ 2691 develop_pd(bool, ProfileTraps, \ 2692 "Profile deoptimization traps at the bytecode level") \ 2693 \ 2694 product(intx, ProfileMaturityPercentage, 20, \ 2695 "number of method invocations/branches (expressed as % of " \ 2696 "CompileThreshold) before using the method's profile") \ 2697 \ 2698 develop(bool, PrintMethodData, false, \ 2699 "Print the results of +ProfileInterpreter at end of run") \ 2700 \ 2701 develop(bool, VerifyDataPointer, trueInDebug, \ 2702 "Verify the method data pointer during interpreter profiling") \ 2703 \ 2704 develop(bool, VerifyCompiledCode, false, \ 2705 "Include miscellaneous runtime verifications in nmethod code; " \ 2706 "default off because it disturbs nmethod size heuristics") \ 2707 \ 2708 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 2709 "Manually make GC thread crash then dump java stack trace; " \ 2710 "Test only") \ 2711 \ 2712 /* compilation */ \ 2713 product(bool, UseCompiler, true, \ 2714 "use compilation") \ 2715 \ 2716 develop(bool, TraceCompilationPolicy, false, \ 2717 "Trace compilation policy") \ 2718 \ 2719 develop(bool, TimeCompilationPolicy, false, \ 2720 "Time the compilation policy") \ 2721 \ 2722 product(bool, UseCounterDecay, true, \ 2723 "adjust recompilation counters") \ 2724 \ 2725 develop(intx, CounterHalfLifeTime, 30, \ 2726 "half-life time of invocation counters (in secs)") \ 2727 \ 2728 develop(intx, CounterDecayMinIntervalLength, 500, \ 2729 "Min. ms. between invocation of CounterDecay") \ 2730 \ 2731 product(bool, AlwaysCompileLoopMethods, false, \ 2732 "when using recompilation, never interpret methods " \ 2733 "containing loops") \ 2734 \ 2735 product(bool, DontCompileHugeMethods, true, \ 2736 "don't compile methods > HugeMethodLimit") \ 2737 \ 2738 /* Bytecode escape analysis estimation. */ \ 2739 product(bool, EstimateArgEscape, true, \ 2740 "Analyze bytecodes to estimate escape state of arguments") \ 2741 \ 2742 product(intx, BCEATraceLevel, 0, \ 2743 "How much tracing to do of bytecode escape analysis estimates") \ 2744 \ 2745 product(intx, MaxBCEAEstimateLevel, 5, \ 2746 "Maximum number of nested calls that are analyzed by BC EA.") \ 2747 \ 2748 product(intx, MaxBCEAEstimateSize, 150, \ 2749 "Maximum bytecode size of a method to be analyzed by BC EA.") \ 2750 \ 2751 product(intx, AllocatePrefetchStyle, 1, \ 2752 "0 = no prefetch, " \ 2753 "1 = prefetch instructions for each allocation, " \ 2754 "2 = use TLAB watermark to gate allocation prefetch, " \ 2755 "3 = use BIS instruction on Sparc for allocation prefetch") \ 2756 \ 2757 product(intx, AllocatePrefetchDistance, -1, \ 2758 "Distance to prefetch ahead of allocation pointer") \ 2759 \ 2760 product(intx, AllocatePrefetchLines, 3, \ 2761 "Number of lines to prefetch ahead of array allocation pointer") \ 2762 \ 2763 product(intx, AllocateInstancePrefetchLines, 1, \ 2764 "Number of lines to prefetch ahead of instance allocation pointer") \ 2765 \ 2766 product(intx, AllocatePrefetchStepSize, 16, \ 2767 "Step size in bytes of sequential prefetch instructions") \ 2768 \ 2769 product(intx, AllocatePrefetchInstr, 0, \ 2770 "Prefetch instruction to prefetch ahead of allocation pointer") \ 2771 \ 2772 /* deoptimization */ \ 2773 develop(bool, TraceDeoptimization, false, \ 2774 "Trace deoptimization") \ 2775 \ 2776 develop(bool, DebugDeoptimization, false, \ 2777 "Tracing various information while debugging deoptimization") \ 2778 \ 2779 product(intx, SelfDestructTimer, 0, \ 2780 "Will cause VM to terminate after a given time (in minutes) " \ 2781 "(0 means off)") \ 2782 \ 2783 product(intx, MaxJavaStackTraceDepth, 1024, \ 2784 "Max. no. of lines in the stack trace for Java exceptions " \ 2785 "(0 means all)") \ 2786 \ 2787 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 2788 "Guarantee a safepoint (at least) every so many milliseconds " \ 2789 "(0 means none)")) \ 2790 \ 2791 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ 2792 "Guarantee a safepoint (at least) every so many milliseconds " \ 2793 "(0 means none)")) \ 2794 \ 2795 product(intx, SafepointTimeoutDelay, 10000, \ 2796 "Delay in milliseconds for option SafepointTimeout") \ 2797 \ 2798 product(intx, NmethodSweepFraction, 16, \ 2799 "Number of invocations of sweeper to cover all nmethods") \ 2800 \ 2801 product(intx, NmethodSweepCheckInterval, 5, \ 2802 "Compilers wake up every n seconds to possibly sweep nmethods") \ 2803 \ 2804 notproduct(bool, LogSweeper, false, \ 2805 "Keep a ring buffer of sweeper activity") \ 2806 \ 2807 notproduct(intx, SweeperLogEntries, 1024, \ 2808 "Number of records in the ring buffer of sweeper activity") \ 2809 \ 2810 notproduct(intx, MemProfilingInterval, 500, \ 2811 "Time between each invocation of the MemProfiler") \ 2812 \ 2813 develop(intx, MallocCatchPtr, -1, \ 2814 "Hit breakpoint when mallocing/freeing this pointer") \ 2815 \ 2816 notproduct(intx, AssertRepeat, 1, \ 2817 "number of times to evaluate expression in assert " \ 2818 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ 2819 \ 2820 notproduct(ccstrlist, SuppressErrorAt, "", \ 2821 "List of assertions (file:line) to muzzle") \ 2822 \ 2823 notproduct(uintx, HandleAllocationLimit, 1024, \ 2824 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 2825 "is used") \ 2826 \ 2827 develop(uintx, TotalHandleAllocationLimit, 1024, \ 2828 "Threshold for total handle allocation when " \ 2829 "+TraceHandleAllocation is used") \ 2830 \ 2831 develop(intx, StackPrintLimit, 100, \ 2832 "number of stack frames to print in VM-level stack dump") \ 2833 \ 2834 notproduct(intx, MaxElementPrintSize, 256, \ 2835 "maximum number of elements to print") \ 2836 \ 2837 notproduct(intx, MaxSubklassPrintSize, 4, \ 2838 "maximum number of subklasses to print when printing klass") \ 2839 \ 2840 product(intx, MaxInlineLevel, 9, \ 2841 "maximum number of nested calls that are inlined") \ 2842 \ 2843 product(intx, MaxRecursiveInlineLevel, 1, \ 2844 "maximum number of nested recursive calls that are inlined") \ 2845 \ 2846 product_pd(intx, InlineSmallCode, \ 2847 "Only inline already compiled methods if their code size is " \ 2848 "less than this") \ 2849 \ 2850 product(intx, MaxInlineSize, 35, \ 2851 "maximum bytecode size of a method to be inlined") \ 2852 \ 2853 product_pd(intx, FreqInlineSize, \ 2854 "maximum bytecode size of a frequent method to be inlined") \ 2855 \ 2856 product(intx, MaxTrivialSize, 6, \ 2857 "maximum bytecode size of a trivial method to be inlined") \ 2858 \ 2859 product(intx, MinInliningThreshold, 250, \ 2860 "min. invocation count a method needs to have to be inlined") \ 2861 \ 2862 develop(intx, MethodHistogramCutoff, 100, \ 2863 "cutoff value for method invoc. histogram (+CountCalls)") \ 2864 \ 2865 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2866 "# of interpreted methods to show in profile") \ 2867 \ 2868 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 2869 "# of compiled methods to show in profile") \ 2870 \ 2871 develop(intx, ProfilerNumberOfStubMethods, 25, \ 2872 "# of stub methods to show in profile") \ 2873 \ 2874 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2875 "# of runtime stub nodes to show in profile") \ 2876 \ 2877 product(intx, ProfileIntervalsTicks, 100, \ 2878 "# of ticks between printing of interval profile " \ 2879 "(+ProfileIntervals)") \ 2880 \ 2881 notproduct(intx, ScavengeALotInterval, 1, \ 2882 "Interval between which scavenge will occur with +ScavengeALot") \ 2883 \ 2884 notproduct(intx, FullGCALotInterval, 1, \ 2885 "Interval between which full gc will occur with +FullGCALot") \ 2886 \ 2887 notproduct(intx, FullGCALotStart, 0, \ 2888 "For which invocation to start FullGCAlot") \ 2889 \ 2890 notproduct(intx, FullGCALotDummies, 32*K, \ 2891 "Dummy object allocated with +FullGCALot, forcing all objects " \ 2892 "to move") \ 2893 \ 2894 develop(intx, DontYieldALotInterval, 10, \ 2895 "Interval between which yields will be dropped (milliseconds)") \ 2896 \ 2897 develop(intx, MinSleepInterval, 1, \ 2898 "Minimum sleep() interval (milliseconds) when " \ 2899 "ConvertSleepToYield is off (used for SOLARIS)") \ 2900 \ 2901 develop(intx, ProfilerPCTickThreshold, 15, \ 2902 "Number of ticks in a PC buckets to be a hotspot") \ 2903 \ 2904 notproduct(intx, DeoptimizeALotInterval, 5, \ 2905 "Number of exits until DeoptimizeALot kicks in") \ 2906 \ 2907 notproduct(intx, ZombieALotInterval, 5, \ 2908 "Number of exits until ZombieALot kicks in") \ 2909 \ 2910 develop(bool, StressNonEntrant, false, \ 2911 "Mark nmethods non-entrant at registration") \ 2912 \ 2913 diagnostic(intx, MallocVerifyInterval, 0, \ 2914 "if non-zero, verify C heap after every N calls to " \ 2915 "malloc/realloc/free") \ 2916 \ 2917 diagnostic(intx, MallocVerifyStart, 0, \ 2918 "if non-zero, start verifying C heap after Nth call to " \ 2919 "malloc/realloc/free") \ 2920 \ 2921 diagnostic(uintx, MallocMaxTestWords, 0, \ 2922 "if non-zero, max # of Words that malloc/realloc can allocate " \ 2923 "(for testing only)") \ 2924 \ 2925 product(intx, TypeProfileWidth, 2, \ 2926 "number of receiver types to record in call/cast profile") \ 2927 \ 2928 develop(intx, BciProfileWidth, 2, \ 2929 "number of return bci's to record in ret profile") \ 2930 \ 2931 product(intx, PerMethodRecompilationCutoff, 400, \ 2932 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 2933 \ 2934 product(intx, PerBytecodeRecompilationCutoff, 200, \ 2935 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 2936 \ 2937 product(intx, PerMethodTrapLimit, 100, \ 2938 "Limit on traps (of one kind) in a method (includes inlines)") \ 2939 \ 2940 product(intx, PerBytecodeTrapLimit, 4, \ 2941 "Limit on traps (of one kind) at a particular BCI") \ 2942 \ 2943 develop(intx, InlineFrequencyRatio, 20, \ 2944 "Ratio of call site execution to caller method invocation") \ 2945 \ 2946 develop_pd(intx, InlineFrequencyCount, \ 2947 "Count of call site execution necessary to trigger frequent " \ 2948 "inlining") \ 2949 \ 2950 develop(intx, InlineThrowCount, 50, \ 2951 "Force inlining of interpreted methods that throw this often") \ 2952 \ 2953 develop(intx, InlineThrowMaxSize, 200, \ 2954 "Force inlining of throwing methods smaller than this") \ 2955 \ 2956 develop(intx, ProfilerNodeSize, 1024, \ 2957 "Size in K to allocate for the Profile Nodes of each thread") \ 2958 \ 2959 product_pd(intx, PreInflateSpin, \ 2960 "Number of times to spin wait before inflation") \ 2961 \ 2962 /* gc parameters */ \ 2963 product(uintx, InitialHeapSize, 0, \ 2964 "Initial heap size (in bytes); zero means OldSize + NewSize") \ 2965 \ 2966 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ 2967 "Maximum heap size (in bytes)") \ 2968 \ 2969 product(uintx, OldSize, ScaleForWordSize(4*M), \ 2970 "Initial tenured generation size (in bytes)") \ 2971 \ 2972 product(uintx, NewSize, ScaleForWordSize(1*M), \ 2973 "Initial new generation size (in bytes)") \ 2974 \ 2975 product(uintx, MaxNewSize, max_uintx, \ 2976 "Maximum new generation size (in bytes), max_uintx means set " \ 2977 "ergonomically") \ 2978 \ 2979 product(uintx, PretenureSizeThreshold, 0, \ 2980 "Maximum size in bytes of objects allocated in DefNew " \ 2981 "generation; zero means no maximum") \ 2982 \ 2983 product(uintx, TLABSize, 0, \ 2984 "Starting TLAB size (in bytes); zero means set ergonomically") \ 2985 \ 2986 product(uintx, MinTLABSize, 2*K, \ 2987 "Minimum allowed TLAB size (in bytes)") \ 2988 \ 2989 product(uintx, TLABAllocationWeight, 35, \ 2990 "Allocation averaging weight") \ 2991 \ 2992 product(uintx, TLABWasteTargetPercent, 1, \ 2993 "Percentage of Eden that can be wasted") \ 2994 \ 2995 product(uintx, TLABRefillWasteFraction, 64, \ 2996 "Max TLAB waste at a refill (internal fragmentation)") \ 2997 \ 2998 product(uintx, TLABWasteIncrement, 4, \ 2999 "Increment allowed waste at slow allocation") \ 3000 \ 3001 product(uintx, SurvivorRatio, 8, \ 3002 "Ratio of eden/survivor space size") \ 3003 \ 3004 product(uintx, NewRatio, 2, \ 3005 "Ratio of new/old generation sizes") \ 3006 \ 3007 product_pd(uintx, NewSizeThreadIncrease, \ 3008 "Additional size added to desired new generation size per " \ 3009 "non-daemon thread (in bytes)") \ 3010 \ 3011 product_pd(uintx, MetaspaceSize, \ 3012 "Initial size of Metaspaces (in bytes)") \ 3013 \ 3014 product(uintx, MaxMetaspaceSize, max_uintx, \ 3015 "Maximum size of Metaspaces (in bytes)") \ 3016 \ 3017 product(uintx, ClassMetaspaceSize, 2*M, \ 3018 "Maximum size of InstanceKlass area in Metaspace used for " \ 3019 "UseCompressedKlassPointers") \ 3020 \ 3021 product(uintx, MinHeapFreeRatio, 40, \ 3022 "Min percentage of heap free after GC to avoid expansion") \ 3023 \ 3024 product(uintx, MaxHeapFreeRatio, 70, \ 3025 "Max percentage of heap free after GC to avoid shrinking") \ 3026 \ 3027 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 3028 "Number of milliseconds per MB of free space in the heap") \ 3029 \ 3030 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 3031 "Min change in heap space due to GC (in bytes)") \ 3032 \ 3033 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 3034 "Min expansion of Metaspace (in bytes)") \ 3035 \ 3036 product(uintx, MinMetaspaceFreeRatio, 40, \ 3037 "Min percentage of Metaspace free after GC to avoid expansion") \ 3038 \ 3039 product(uintx, MaxMetaspaceFreeRatio, 70, \ 3040 "Max percentage of Metaspace free after GC to avoid shrinking") \ 3041 \ 3042 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3043 "Max expansion of Metaspace without full GC (in bytes)") \ 3044 \ 3045 product(intx, QueuedAllocationWarningCount, 0, \ 3046 "Number of times an allocation that queues behind a GC " \ 3047 "will retry before printing a warning") \ 3048 \ 3049 diagnostic(uintx, VerifyGCStartAt, 0, \ 3050 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3051 \ 3052 diagnostic(intx, VerifyGCLevel, 0, \ 3053 "Generation level at which to start +VerifyBefore/AfterGC") \ 3054 \ 3055 product(uintx, MaxTenuringThreshold, 15, \ 3056 "Maximum value for tenuring threshold") \ 3057 \ 3058 product(uintx, InitialTenuringThreshold, 7, \ 3059 "Initial value for tenuring threshold") \ 3060 \ 3061 product(uintx, TargetSurvivorRatio, 50, \ 3062 "Desired percentage of survivor space used after scavenge") \ 3063 \ 3064 product(uintx, MarkSweepDeadRatio, 5, \ 3065 "Percentage (0-100) of the old gen allowed as dead wood." \ 3066 "Serial mark sweep treats this as both the min and max value." \ 3067 "CMS uses this value only if it falls back to mark sweep." \ 3068 "Par compact uses a variable scale based on the density of the" \ 3069 "generation and treats this as the max value when the heap is" \ 3070 "either completely full or completely empty. Par compact also" \ 3071 "has a smaller default value; see arguments.cpp.") \ 3072 \ 3073 product(intx, MarkSweepAlwaysCompactCount, 4, \ 3074 "How often should we fully compact the heap (ignoring the dead " \ 3075 "space parameters)") \ 3076 \ 3077 product(intx, PrintCMSStatistics, 0, \ 3078 "Statistics for CMS") \ 3079 \ 3080 product(bool, PrintCMSInitiationStatistics, false, \ 3081 "Statistics for initiating a CMS collection") \ 3082 \ 3083 product(intx, PrintFLSStatistics, 0, \ 3084 "Statistics for CMS' FreeListSpace") \ 3085 \ 3086 product(intx, PrintFLSCensus, 0, \ 3087 "Census for CMS' FreeListSpace") \ 3088 \ 3089 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 3090 "Delay in ms between expansion and allocation") \ 3091 \ 3092 develop(uintx, GCWorkerDelayMillis, 0, \ 3093 "Delay in ms in scheduling GC workers") \ 3094 \ 3095 product(intx, DeferThrSuspendLoopCount, 4000, \ 3096 "(Unstable) Number of times to iterate in safepoint loop " \ 3097 " before blocking VM threads ") \ 3098 \ 3099 product(intx, DeferPollingPageLoopCount, -1, \ 3100 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 3101 "before changing safepoint polling page to RO ") \ 3102 \ 3103 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 3104 \ 3105 product(bool, PSChunkLargeArrays, true, \ 3106 "true: process large arrays in chunks") \ 3107 \ 3108 product(uintx, GCDrainStackTargetSize, 64, \ 3109 "how many entries we'll try to leave on the stack during " \ 3110 "parallel GC") \ 3111 \ 3112 /* stack parameters */ \ 3113 product_pd(intx, StackYellowPages, \ 3114 "Number of yellow zone (recoverable overflows) pages") \ 3115 \ 3116 product_pd(intx, StackRedPages, \ 3117 "Number of red zone (unrecoverable overflows) pages") \ 3118 \ 3119 product_pd(intx, StackShadowPages, \ 3120 "Number of shadow zone (for overflow checking) pages" \ 3121 " this should exceed the depth of the VM and native call stack") \ 3122 \ 3123 product_pd(intx, ThreadStackSize, \ 3124 "Thread Stack Size (in Kbytes)") \ 3125 \ 3126 product_pd(intx, VMThreadStackSize, \ 3127 "Non-Java Thread Stack Size (in Kbytes)") \ 3128 \ 3129 product_pd(intx, CompilerThreadStackSize, \ 3130 "Compiler Thread Stack Size (in Kbytes)") \ 3131 \ 3132 develop_pd(uintx, JVMInvokeMethodSlack, \ 3133 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 3134 \ 3135 product(uintx, ThreadSafetyMargin, 50*M, \ 3136 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ 3137 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ 3138 "disable this feature") \ 3139 \ 3140 /* code cache parameters */ \ 3141 develop(uintx, CodeCacheSegmentSize, 64, \ 3142 "Code cache segment size (in bytes) - smallest unit of " \ 3143 "allocation") \ 3144 \ 3145 develop_pd(intx, CodeEntryAlignment, \ 3146 "Code entry alignment for generated code (in bytes)") \ 3147 \ 3148 product_pd(intx, OptoLoopAlignment, \ 3149 "Align inner loops to zero relative to this modulus") \ 3150 \ 3151 product_pd(uintx, InitialCodeCacheSize, \ 3152 "Initial code cache size (in bytes)") \ 3153 \ 3154 product_pd(uintx, ReservedCodeCacheSize, \ 3155 "Reserved code cache size (in bytes) - maximum code cache size") \ 3156 \ 3157 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ 3158 "When less than X space left, we stop compiling.") \ 3159 \ 3160 product_pd(uintx, CodeCacheExpansionSize, \ 3161 "Code cache expansion size (in bytes)") \ 3162 \ 3163 develop_pd(uintx, CodeCacheMinBlockLength, \ 3164 "Minimum number of segments in a code cache block.") \ 3165 \ 3166 notproduct(bool, ExitOnFullCodeCache, false, \ 3167 "Exit the VM if we fill the code cache.") \ 3168 \ 3169 product(bool, UseCodeCacheFlushing, true, \ 3170 "Attempt to clean the code cache before shutting off compiler") \ 3171 \ 3172 product(intx, MinCodeCacheFlushingInterval, 30, \ 3173 "Min number of seconds between code cache cleaning sessions") \ 3174 \ 3175 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ 3176 "When less than X space left, start code cache cleaning") \ 3177 \ 3178 /* interpreter debugging */ \ 3179 develop(intx, BinarySwitchThreshold, 5, \ 3180 "Minimal number of lookupswitch entries for rewriting to binary " \ 3181 "switch") \ 3182 \ 3183 develop(intx, StopInterpreterAt, 0, \ 3184 "Stops interpreter execution at specified bytecode number") \ 3185 \ 3186 develop(intx, TraceBytecodesAt, 0, \ 3187 "Traces bytecodes starting with specified bytecode number") \ 3188 \ 3189 /* compiler interface */ \ 3190 develop(intx, CIStart, 0, \ 3191 "the id of the first compilation to permit") \ 3192 \ 3193 develop(intx, CIStop, -1, \ 3194 "the id of the last compilation to permit") \ 3195 \ 3196 develop(intx, CIStartOSR, 0, \ 3197 "the id of the first osr compilation to permit " \ 3198 "(CICountOSR must be on)") \ 3199 \ 3200 develop(intx, CIStopOSR, -1, \ 3201 "the id of the last osr compilation to permit " \ 3202 "(CICountOSR must be on)") \ 3203 \ 3204 develop(intx, CIBreakAtOSR, -1, \ 3205 "id of osr compilation to break at") \ 3206 \ 3207 develop(intx, CIBreakAt, -1, \ 3208 "id of compilation to break at") \ 3209 \ 3210 product(ccstrlist, CompileOnly, "", \ 3211 "List of methods (pkg/class.name) to restrict compilation to") \ 3212 \ 3213 product(ccstr, CompileCommandFile, NULL, \ 3214 "Read compiler commands from this file [.hotspot_compiler]") \ 3215 \ 3216 product(ccstrlist, CompileCommand, "", \ 3217 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3218 \ 3219 develop(bool, ReplayCompiles, false, \ 3220 "Enable replay of compilations from ReplayDataFile") \ 3221 \ 3222 develop(ccstr, ReplayDataFile, "replay.txt", \ 3223 "file containing compilation replay information") \ 3224 \ 3225 develop(intx, ReplaySuppressInitializers, 2, \ 3226 "Controls handling of class initialization during replay" \ 3227 "0 - don't do anything special" \ 3228 "1 - treat all class initializers as empty" \ 3229 "2 - treat class initializers for application classes as empty" \ 3230 "3 - allow all class initializers to run during bootstrap but" \ 3231 " pretend they are empty after starting replay") \ 3232 \ 3233 develop(bool, ReplayIgnoreInitErrors, false, \ 3234 "Ignore exceptions thrown during initialization for replay") \ 3235 \ 3236 develop(bool, DumpReplayDataOnError, true, \ 3237 "record replay data for crashing compiler threads") \ 3238 \ 3239 product(bool, CICompilerCountPerCPU, false, \ 3240 "1 compiler thread for log(N CPUs)") \ 3241 \ 3242 develop(intx, CIFireOOMAt, -1, \ 3243 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3244 "(non-negative value throws OOM after this many CI accesses " \ 3245 "in each compile)") \ 3246 \ 3247 notproduct(bool, CIObjectFactoryVerify, false, \ 3248 "enable potentially expensive verification in ciObjectFactory") \ 3249 \ 3250 /* Priorities */ \ 3251 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3252 \ 3253 product(intx, ThreadPriorityPolicy, 0, \ 3254 "0 : Normal. "\ 3255 " VM chooses priorities that are appropriate for normal "\ 3256 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3257 " to normal native priority. Java priorities below NORM_PRIORITY"\ 3258 " map to lower native priority values. On Windows applications"\ 3259 " are allowed to use higher native priorities. However, with "\ 3260 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ 3261 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ 3262 " interfere with system threads. On Linux thread priorities "\ 3263 " are ignored because the OS does not support static priority "\ 3264 " in SCHED_OTHER scheduling class which is the only choice for"\ 3265 " non-root, non-realtime applications. "\ 3266 "1 : Aggressive. "\ 3267 " Java thread priorities map over to the entire range of "\ 3268 " native thread priorities. Higher Java thread priorities map "\ 3269 " to higher native thread priorities. This policy should be "\ 3270 " used with care, as sometimes it can cause performance "\ 3271 " degradation in the application and/or the entire system. On "\ 3272 " Linux this policy requires root privilege.") \ 3273 \ 3274 product(bool, ThreadPriorityVerbose, false, \ 3275 "Print priority changes") \ 3276 \ 3277 product(intx, DefaultThreadPriority, -1, \ 3278 "The native priority at which threads run if not elsewhere " \ 3279 "specified (-1 means no change)") \ 3280 \ 3281 product(intx, CompilerThreadPriority, -1, \ 3282 "The native priority at which compiler threads should run " \ 3283 "(-1 means no change)") \ 3284 \ 3285 product(intx, VMThreadPriority, -1, \ 3286 "The native priority at which the VM thread should run " \ 3287 "(-1 means no change)") \ 3288 \ 3289 product(bool, CompilerThreadHintNoPreempt, true, \ 3290 "(Solaris only) Give compiler threads an extra quanta") \ 3291 \ 3292 product(bool, VMThreadHintNoPreempt, false, \ 3293 "(Solaris only) Give VM thread an extra quanta") \ 3294 \ 3295 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3296 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3297 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3298 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3299 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3300 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3301 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3302 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3303 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3304 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ 3305 \ 3306 experimental(bool, UseCriticalJavaThreadPriority, false, \ 3307 "Java thread priority 10 maps to critical scheduling priority") \ 3308 \ 3309 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 3310 "Compiler thread(s) run at critical scheduling priority") \ 3311 \ 3312 experimental(bool, UseCriticalCMSThreadPriority, false, \ 3313 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 3314 \ 3315 /* compiler debugging */ \ 3316 notproduct(intx, CompileTheWorldStartAt, 1, \ 3317 "First class to consider when using +CompileTheWorld") \ 3318 \ 3319 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3320 "Last class to consider when using +CompileTheWorld") \ 3321 \ 3322 develop(intx, NewCodeParameter, 0, \ 3323 "Testing Only: Create a dedicated integer parameter before " \ 3324 "putback") \ 3325 \ 3326 /* new oopmap storage allocation */ \ 3327 develop(intx, MinOopMapAllocation, 8, \ 3328 "Minimum number of OopMap entries in an OopMapSet") \ 3329 \ 3330 /* Background Compilation */ \ 3331 develop(intx, LongCompileThreshold, 50, \ 3332 "Used with +TraceLongCompiles") \ 3333 \ 3334 product(intx, StarvationMonitorInterval, 200, \ 3335 "Pause between each check in ms") \ 3336 \ 3337 /* recompilation */ \ 3338 product_pd(intx, CompileThreshold, \ 3339 "number of interpreted method invocations before (re-)compiling") \ 3340 \ 3341 product_pd(intx, BackEdgeThreshold, \ 3342 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ 3343 \ 3344 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 3345 "Interpreter (tier 0) invocation notification frequency.") \ 3346 \ 3347 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 3348 "C1 without MDO (tier 2) invocation notification frequency.") \ 3349 \ 3350 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 3351 "C1 with MDO profiling (tier 3) invocation notification " \ 3352 "frequency.") \ 3353 \ 3354 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 3355 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 3356 \ 3357 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 3358 "Interpreter (tier 0) invocation notification frequency.") \ 3359 \ 3360 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 3361 "C1 without MDO (tier 2) invocation notification frequency.") \ 3362 \ 3363 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 3364 "C1 with MDO profiling (tier 3) invocation notification " \ 3365 "frequency.") \ 3366 \ 3367 product(intx, Tier2CompileThreshold, 0, \ 3368 "threshold at which tier 2 compilation is invoked") \ 3369 \ 3370 product(intx, Tier2BackEdgeThreshold, 0, \ 3371 "Back edge threshold at which tier 2 compilation is invoked") \ 3372 \ 3373 product(intx, Tier3InvocationThreshold, 200, \ 3374 "Compile if number of method invocations crosses this " \ 3375 "threshold") \ 3376 \ 3377 product(intx, Tier3MinInvocationThreshold, 100, \ 3378 "Minimum invocation to compile at tier 3") \ 3379 \ 3380 product(intx, Tier3CompileThreshold, 2000, \ 3381 "Threshold at which tier 3 compilation is invoked (invocation " \ 3382 "minimum must be satisfied.") \ 3383 \ 3384 product(intx, Tier3BackEdgeThreshold, 60000, \ 3385 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 3386 \ 3387 product(intx, Tier4InvocationThreshold, 5000, \ 3388 "Compile if number of method invocations crosses this " \ 3389 "threshold") \ 3390 \ 3391 product(intx, Tier4MinInvocationThreshold, 600, \ 3392 "Minimum invocation to compile at tier 4") \ 3393 \ 3394 product(intx, Tier4CompileThreshold, 15000, \ 3395 "Threshold at which tier 4 compilation is invoked (invocation " \ 3396 "minimum must be satisfied.") \ 3397 \ 3398 product(intx, Tier4BackEdgeThreshold, 40000, \ 3399 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 3400 \ 3401 product(intx, Tier3DelayOn, 5, \ 3402 "If C2 queue size grows over this amount per compiler thread " \ 3403 "stop compiling at tier 3 and start compiling at tier 2") \ 3404 \ 3405 product(intx, Tier3DelayOff, 2, \ 3406 "If C2 queue size is less than this amount per compiler thread " \ 3407 "allow methods compiled at tier 2 transition to tier 3") \ 3408 \ 3409 product(intx, Tier3LoadFeedback, 5, \ 3410 "Tier 3 thresholds will increase twofold when C1 queue size " \ 3411 "reaches this amount per compiler thread") \ 3412 \ 3413 product(intx, Tier4LoadFeedback, 3, \ 3414 "Tier 4 thresholds will increase twofold when C2 queue size " \ 3415 "reaches this amount per compiler thread") \ 3416 \ 3417 product(intx, TieredCompileTaskTimeout, 50, \ 3418 "Kill compile task if method was not used within " \ 3419 "given timeout in milliseconds") \ 3420 \ 3421 product(intx, TieredStopAtLevel, 4, \ 3422 "Stop at given compilation level") \ 3423 \ 3424 product(intx, Tier0ProfilingStartPercentage, 200, \ 3425 "Start profiling in interpreter if the counters exceed tier 3" \ 3426 "thresholds by the specified percentage") \ 3427 \ 3428 product(intx, TieredRateUpdateMinTime, 1, \ 3429 "Minimum rate sampling interval (in milliseconds)") \ 3430 \ 3431 product(intx, TieredRateUpdateMaxTime, 25, \ 3432 "Maximum rate sampling interval (in milliseconds)") \ 3433 \ 3434 product_pd(bool, TieredCompilation, \ 3435 "Enable tiered compilation") \ 3436 \ 3437 product(bool, PrintTieredEvents, false, \ 3438 "Print tiered events notifications") \ 3439 \ 3440 product_pd(intx, OnStackReplacePercentage, \ 3441 "NON_TIERED number of method invocations/branches (expressed as %"\ 3442 "of CompileThreshold) before (re-)compiling OSR code") \ 3443 \ 3444 product(intx, InterpreterProfilePercentage, 33, \ 3445 "NON_TIERED number of method invocations/branches (expressed as %"\ 3446 "of CompileThreshold) before profiling in the interpreter") \ 3447 \ 3448 develop(intx, MaxRecompilationSearchLength, 10, \ 3449 "max. # frames to inspect searching for recompilee") \ 3450 \ 3451 develop(intx, MaxInterpretedSearchLength, 3, \ 3452 "max. # interp. frames to skip when searching for recompilee") \ 3453 \ 3454 develop(intx, DesiredMethodLimit, 8000, \ 3455 "desired max. method size (in bytecodes) after inlining") \ 3456 \ 3457 develop(intx, HugeMethodLimit, 8000, \ 3458 "don't compile methods larger than this if " \ 3459 "+DontCompileHugeMethods") \ 3460 \ 3461 /* New JDK 1.4 reflection implementation */ \ 3462 \ 3463 develop(bool, UseNewReflection, true, \ 3464 "Temporary flag for transition to reflection based on dynamic " \ 3465 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ 3466 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ 3467 "changes were needed") \ 3468 \ 3469 develop(bool, VerifyReflectionBytecodes, false, \ 3470 "Force verification of 1.4 reflection bytecodes. Does not work " \ 3471 "in situations like that described in 4486457 or for " \ 3472 "constructors generated for serialization, so can not be enabled "\ 3473 "in product.") \ 3474 \ 3475 product(bool, ReflectionWrapResolutionErrors, true, \ 3476 "Temporary flag for transition to AbstractMethodError wrapped " \ 3477 "in InvocationTargetException. See 6531596") \ 3478 \ 3479 \ 3480 develop(intx, FastSuperclassLimit, 8, \ 3481 "Depth of hardwired instanceof accelerator array") \ 3482 \ 3483 /* Properties for Java libraries */ \ 3484 \ 3485 product(uintx, MaxDirectMemorySize, 0, \ 3486 "Maximum total size of NIO direct-buffer allocations") \ 3487 \ 3488 /* temporary developer defined flags */ \ 3489 \ 3490 diagnostic(bool, UseNewCode, false, \ 3491 "Testing Only: Use the new version while testing") \ 3492 \ 3493 diagnostic(bool, UseNewCode2, false, \ 3494 "Testing Only: Use the new version while testing") \ 3495 \ 3496 diagnostic(bool, UseNewCode3, false, \ 3497 "Testing Only: Use the new version while testing") \ 3498 \ 3499 /* flags for performance data collection */ \ 3500 \ 3501 product(bool, UsePerfData, falseInEmbedded, \ 3502 "Flag to disable jvmstat instrumentation for performance testing" \ 3503 "and problem isolation purposes.") \ 3504 \ 3505 product(bool, PerfDataSaveToFile, false, \ 3506 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3507 \ 3508 product(ccstr, PerfDataSaveFile, NULL, \ 3509 "Save PerfData memory to the specified absolute pathname," \ 3510 "%p in the file name if present will be replaced by pid") \ 3511 \ 3512 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ 3513 "Data sampling interval in milliseconds") \ 3514 \ 3515 develop(bool, PerfTraceDataCreation, false, \ 3516 "Trace creation of Performance Data Entries") \ 3517 \ 3518 develop(bool, PerfTraceMemOps, false, \ 3519 "Trace PerfMemory create/attach/detach calls") \ 3520 \ 3521 product(bool, PerfDisableSharedMem, false, \ 3522 "Store performance data in standard memory") \ 3523 \ 3524 product(intx, PerfDataMemorySize, 32*K, \ 3525 "Size of performance data memory region. Will be rounded " \ 3526 "up to a multiple of the native os page size.") \ 3527 \ 3528 product(intx, PerfMaxStringConstLength, 1024, \ 3529 "Maximum PerfStringConstant string length before truncation") \ 3530 \ 3531 product(bool, PerfAllowAtExitRegistration, false, \ 3532 "Allow registration of atexit() methods") \ 3533 \ 3534 product(bool, PerfBypassFileSystemCheck, false, \ 3535 "Bypass Win32 file system criteria checks (Windows Only)") \ 3536 \ 3537 product(intx, UnguardOnExecutionViolation, 0, \ 3538 "Unguard page and retry on no-execute fault (Win32 only)" \ 3539 "0=off, 1=conservative, 2=aggressive") \ 3540 \ 3541 /* Serviceability Support */ \ 3542 \ 3543 product(bool, ManagementServer, false, \ 3544 "Create JMX Management Server") \ 3545 \ 3546 product(bool, DisableAttachMechanism, false, \ 3547 "Disable mechanism that allows tools to attach to this VM") \ 3548 \ 3549 product(bool, StartAttachListener, false, \ 3550 "Always start Attach Listener at VM startup") \ 3551 \ 3552 manageable(bool, PrintConcurrentLocks, false, \ 3553 "Print java.util.concurrent locks in thread dump") \ 3554 \ 3555 product(bool, TransmitErrorReport, false, \ 3556 "Enable error report transmission on erroneous termination") \ 3557 \ 3558 product(ccstr, ErrorReportServer, NULL, \ 3559 "Override built-in error report server address") \ 3560 \ 3561 /* Shared spaces */ \ 3562 \ 3563 product(bool, UseSharedSpaces, true, \ 3564 "Use shared spaces for metadata") \ 3565 \ 3566 product(bool, RequireSharedSpaces, false, \ 3567 "Require shared spaces for metadata") \ 3568 \ 3569 product(bool, DumpSharedSpaces, false, \ 3570 "Special mode: JVM reads a class list, loads classes, builds " \ 3571 "shared spaces, and dumps the shared spaces to a file to be " \ 3572 "used in future JVM runs.") \ 3573 \ 3574 product(bool, PrintSharedSpaces, false, \ 3575 "Print usage of shared spaces") \ 3576 \ 3577 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3578 "Size of read-write space for metadata (in bytes)") \ 3579 \ 3580 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3581 "Size of read-only space for metadata (in bytes)") \ 3582 \ 3583 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ 3584 "Size of the shared miscellaneous data area (in bytes)") \ 3585 \ 3586 product(uintx, SharedMiscCodeSize, 120*K, \ 3587 "Size of the shared miscellaneous code area (in bytes)") \ 3588 \ 3589 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \ 3590 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ 3591 "Address to allocate shared memory region for class data") \ 3592 \ 3593 diagnostic(bool, EnableInvokeDynamic, true, \ 3594 "support JSR 292 (method handles, invokedynamic, " \ 3595 "anonymous classes") \ 3596 \ 3597 diagnostic(bool, PrintMethodHandleStubs, false, \ 3598 "Print generated stub code for method handles") \ 3599 \ 3600 develop(bool, TraceMethodHandles, false, \ 3601 "trace internal method handle operations") \ 3602 \ 3603 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 3604 "perform extra checks when constructing method handles") \ 3605 \ 3606 diagnostic(bool, ShowHiddenFrames, false, \ 3607 "show method handle implementation frames (usually hidden)") \ 3608 \ 3609 experimental(bool, TrustFinalNonStaticFields, false, \ 3610 "trust final non-static declarations for constant folding") \ 3611 \ 3612 develop(bool, TraceInvokeDynamic, false, \ 3613 "trace internal invoke dynamic operations") \ 3614 \ 3615 diagnostic(bool, PauseAtStartup, false, \ 3616 "Causes the VM to pause at startup time and wait for the pause " \ 3617 "file to be removed (default: ./vm.paused.<pid>)") \ 3618 \ 3619 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3620 "The file to create and for whose removal to await when pausing " \ 3621 "at startup. (default: ./vm.paused.<pid>)") \ 3622 \ 3623 diagnostic(bool, PauseAtExit, false, \ 3624 "Pause and wait for keypress on exit if a debugger is attached") \ 3625 \ 3626 product(bool, ExtendedDTraceProbes, false, \ 3627 "Enable performance-impacting dtrace probes") \ 3628 \ 3629 product(bool, DTraceMethodProbes, false, \ 3630 "Enable dtrace probes for method-entry and method-exit") \ 3631 \ 3632 product(bool, DTraceAllocProbes, false, \ 3633 "Enable dtrace probes for object allocation") \ 3634 \ 3635 product(bool, DTraceMonitorProbes, false, \ 3636 "Enable dtrace probes for monitor events") \ 3637 \ 3638 product(bool, RelaxAccessControlCheck, false, \ 3639 "Relax the access control checks in the verifier") \ 3640 \ 3641 diagnostic(bool, PrintDTraceDOF, false, \ 3642 "Print the DTrace DOF passed to the system for JSDT probes") \ 3643 \ 3644 product(uintx, StringTableSize, defaultStringTableSize, \ 3645 "Number of buckets in the interned String table") \ 3646 \ 3647 develop(bool, TraceDefaultMethods, false, \ 3648 "Trace the default method processing steps") \ 3649 \ 3650 develop(bool, ParseAllGenericSignatures, false, \ 3651 "Parse all generic signatures while classloading") \ 3652 \ 3653 develop(bool, VerifyGenericSignatures, false, \ 3654 "Abort VM on erroneous or inconsistent generic signatures") \ 3655 \ 3656 product(bool, UseVMInterruptibleIO, false, \ 3657 "(Unstable, Solaris-specific) Thread interrupt before or with " \ 3658 "EINTR for I/O operations results in OS_INTRPT. The default value"\ 3659 " of this flag is true for JDK 6 and earlier") \ 3660 \ 3661 diagnostic(bool, WhiteBoxAPI, false, \ 3662 "Enable internal testing APIs") \ 3663 \ 3664 product(bool, PrintGCCause, true, \ 3665 "Include GC cause in GC logging") \ 3666 \ 3667 product(bool, AllowNonVirtualCalls, false, \ 3668 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") 3669 3670/* 3671 * Macros for factoring of globals 3672 */ 3673 3674// Interface macros 3675#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3676#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 3677#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 3678#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 3679#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 3680#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 3681#ifdef PRODUCT 3682#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 3683#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 3684#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) 3685#else 3686#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 3687#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 3688#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3689#endif 3690// Special LP64 flags, product only needed for now. 3691#ifdef _LP64 3692#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3693#else 3694#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 3695#endif // _LP64 3696 3697// Implementation macros 3698#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 3699#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 3700#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 3701#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 3702#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 3703#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 3704#ifdef PRODUCT 3705#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ 3706#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ 3707#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 3708#else 3709#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 3710#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 3711#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 3712#endif 3713#ifdef _LP64 3714#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 3715#else 3716#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 3717#endif // _LP64 3718 3719RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG, DECLARE_LP64_PRODUCT_FLAG) 3720 3721RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) 3722 3723ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) 3724 3725// Extensions 3726 3727#include "runtime/globals_ext.hpp" 3728 3729#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 3730