globals.hpp revision 9191:a176d4737606
1/* 2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#ifndef SHARE_VM_RUNTIME_GLOBALS_HPP 26#define SHARE_VM_RUNTIME_GLOBALS_HPP 27 28#include <float.h> 29#include "utilities/debug.hpp" 30#include <float.h> // for DBL_MAX 31 32// use this for flags that are true per default in the tiered build 33// but false in non-tiered builds, and vice versa 34#ifdef TIERED 35#define trueInTiered true 36#define falseInTiered false 37#else 38#define trueInTiered false 39#define falseInTiered true 40#endif 41 42#ifdef TARGET_ARCH_x86 43# include "globals_x86.hpp" 44#endif 45#ifdef TARGET_ARCH_sparc 46# include "globals_sparc.hpp" 47#endif 48#ifdef TARGET_ARCH_zero 49# include "globals_zero.hpp" 50#endif 51#ifdef TARGET_ARCH_arm 52# include "globals_arm.hpp" 53#endif 54#ifdef TARGET_ARCH_ppc 55# include "globals_ppc.hpp" 56#endif 57#ifdef TARGET_ARCH_aarch64 58# include "globals_aarch64.hpp" 59#endif 60#ifdef TARGET_OS_FAMILY_linux 61# include "globals_linux.hpp" 62#endif 63#ifdef TARGET_OS_FAMILY_solaris 64# include "globals_solaris.hpp" 65#endif 66#ifdef TARGET_OS_FAMILY_windows 67# include "globals_windows.hpp" 68#endif 69#ifdef TARGET_OS_FAMILY_aix 70# include "globals_aix.hpp" 71#endif 72#ifdef TARGET_OS_FAMILY_bsd 73# include "globals_bsd.hpp" 74#endif 75#ifdef TARGET_OS_ARCH_linux_x86 76# include "globals_linux_x86.hpp" 77#endif 78#ifdef TARGET_OS_ARCH_linux_sparc 79# include "globals_linux_sparc.hpp" 80#endif 81#ifdef TARGET_OS_ARCH_linux_zero 82# include "globals_linux_zero.hpp" 83#endif 84#ifdef TARGET_OS_ARCH_solaris_x86 85# include "globals_solaris_x86.hpp" 86#endif 87#ifdef TARGET_OS_ARCH_solaris_sparc 88# include "globals_solaris_sparc.hpp" 89#endif 90#ifdef TARGET_OS_ARCH_windows_x86 91# include "globals_windows_x86.hpp" 92#endif 93#ifdef TARGET_OS_ARCH_linux_arm 94# include "globals_linux_arm.hpp" 95#endif 96#ifdef TARGET_OS_ARCH_linux_ppc 97# include "globals_linux_ppc.hpp" 98#endif 99#ifdef TARGET_OS_ARCH_linux_aarch64 100# include "globals_linux_aarch64.hpp" 101#endif 102#ifdef TARGET_OS_ARCH_aix_ppc 103# include "globals_aix_ppc.hpp" 104#endif 105#ifdef TARGET_OS_ARCH_bsd_x86 106# include "globals_bsd_x86.hpp" 107#endif 108#ifdef TARGET_OS_ARCH_bsd_zero 109# include "globals_bsd_zero.hpp" 110#endif 111#ifdef COMPILER1 112#ifdef TARGET_ARCH_x86 113# include "c1_globals_x86.hpp" 114#endif 115#ifdef TARGET_ARCH_sparc 116# include "c1_globals_sparc.hpp" 117#endif 118#ifdef TARGET_ARCH_arm 119# include "c1_globals_arm.hpp" 120#endif 121#ifdef TARGET_ARCH_aarch64 122# include "c1_globals_aarch64.hpp" 123#endif 124#ifdef TARGET_OS_FAMILY_linux 125# include "c1_globals_linux.hpp" 126#endif 127#ifdef TARGET_OS_FAMILY_solaris 128# include "c1_globals_solaris.hpp" 129#endif 130#ifdef TARGET_OS_FAMILY_windows 131# include "c1_globals_windows.hpp" 132#endif 133#ifdef TARGET_OS_FAMILY_aix 134# include "c1_globals_aix.hpp" 135#endif 136#ifdef TARGET_OS_FAMILY_bsd 137# include "c1_globals_bsd.hpp" 138#endif 139#ifdef TARGET_ARCH_ppc 140# include "c1_globals_ppc.hpp" 141#endif 142#endif 143#ifdef COMPILER2 144#ifdef TARGET_ARCH_x86 145# include "c2_globals_x86.hpp" 146#endif 147#ifdef TARGET_ARCH_sparc 148# include "c2_globals_sparc.hpp" 149#endif 150#ifdef TARGET_ARCH_arm 151# include "c2_globals_arm.hpp" 152#endif 153#ifdef TARGET_ARCH_ppc 154# include "c2_globals_ppc.hpp" 155#endif 156#ifdef TARGET_ARCH_aarch64 157# include "c2_globals_aarch64.hpp" 158#endif 159#ifdef TARGET_OS_FAMILY_linux 160# include "c2_globals_linux.hpp" 161#endif 162#ifdef TARGET_OS_FAMILY_solaris 163# include "c2_globals_solaris.hpp" 164#endif 165#ifdef TARGET_OS_FAMILY_windows 166# include "c2_globals_windows.hpp" 167#endif 168#ifdef TARGET_OS_FAMILY_aix 169# include "c2_globals_aix.hpp" 170#endif 171#ifdef TARGET_OS_FAMILY_bsd 172# include "c2_globals_bsd.hpp" 173#endif 174#endif 175#ifdef SHARK 176#ifdef TARGET_ARCH_zero 177# include "shark_globals_zero.hpp" 178#endif 179#endif 180 181#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) && !INCLUDE_JVMCI 182define_pd_global(bool, BackgroundCompilation, false); 183define_pd_global(bool, UseTLAB, false); 184define_pd_global(bool, CICompileOSR, false); 185define_pd_global(bool, UseTypeProfile, false); 186define_pd_global(bool, UseOnStackReplacement, false); 187define_pd_global(bool, InlineIntrinsics, false); 188define_pd_global(bool, PreferInterpreterNativeStubs, true); 189define_pd_global(bool, ProfileInterpreter, false); 190define_pd_global(bool, ProfileTraps, false); 191define_pd_global(bool, TieredCompilation, false); 192 193define_pd_global(intx, CompileThreshold, 0); 194 195define_pd_global(intx, OnStackReplacePercentage, 0); 196define_pd_global(bool, ResizeTLAB, false); 197define_pd_global(intx, FreqInlineSize, 0); 198define_pd_global(size_t, NewSizeThreadIncrease, 4*K); 199define_pd_global(intx, InlineClassNatives, true); 200define_pd_global(intx, InlineUnsafeOps, true); 201define_pd_global(intx, InitialCodeCacheSize, 160*K); 202define_pd_global(intx, ReservedCodeCacheSize, 32*M); 203define_pd_global(intx, NonProfiledCodeHeapSize, 0); 204define_pd_global(intx, ProfiledCodeHeapSize, 0); 205define_pd_global(intx, NonNMethodCodeHeapSize, 32*M); 206 207define_pd_global(intx, CodeCacheExpansionSize, 32*K); 208define_pd_global(intx, CodeCacheMinBlockLength, 1); 209define_pd_global(intx, CodeCacheMinimumUseSpace, 200*K); 210define_pd_global(size_t, MetaspaceSize, ScaleForWordSize(4*M)); 211define_pd_global(bool, NeverActAsServerClassMachine, true); 212define_pd_global(uint64_t,MaxRAM, 1ULL*G); 213#define CI_COMPILER_COUNT 0 214#else 215 216#if defined(COMPILER2) || INCLUDE_JVMCI 217#define CI_COMPILER_COUNT 2 218#else 219#define CI_COMPILER_COUNT 1 220#endif // COMPILER2 || INCLUDE_JVMCI 221 222#endif // no compilers 223 224// string type aliases used only in this file 225typedef const char* ccstr; 226typedef const char* ccstrlist; // represents string arguments which accumulate 227 228struct Flag { 229 enum Flags { 230 // value origin 231 DEFAULT = 0, 232 COMMAND_LINE = 1, 233 ENVIRON_VAR = 2, 234 CONFIG_FILE = 3, 235 MANAGEMENT = 4, 236 ERGONOMIC = 5, 237 ATTACH_ON_DEMAND = 6, 238 INTERNAL = 7, 239 240 LAST_VALUE_ORIGIN = INTERNAL, 241 VALUE_ORIGIN_BITS = 4, 242 VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS), 243 244 // flag kind 245 KIND_PRODUCT = 1 << 4, 246 KIND_MANAGEABLE = 1 << 5, 247 KIND_DIAGNOSTIC = 1 << 6, 248 KIND_EXPERIMENTAL = 1 << 7, 249 KIND_NOT_PRODUCT = 1 << 8, 250 KIND_DEVELOP = 1 << 9, 251 KIND_PLATFORM_DEPENDENT = 1 << 10, 252 KIND_READ_WRITE = 1 << 11, 253 KIND_C1 = 1 << 12, 254 KIND_C2 = 1 << 13, 255 KIND_ARCH = 1 << 14, 256 KIND_SHARK = 1 << 15, 257 KIND_LP64_PRODUCT = 1 << 16, 258 KIND_COMMERCIAL = 1 << 17, 259 KIND_JVMCI = 1 << 18, 260 261 KIND_MASK = ~VALUE_ORIGIN_MASK 262 }; 263 264 enum Error { 265 // no error 266 SUCCESS = 0, 267 // flag name is missing 268 MISSING_NAME, 269 // flag value is missing 270 MISSING_VALUE, 271 // error parsing the textual form of the value 272 WRONG_FORMAT, 273 // flag is not writeable 274 NON_WRITABLE, 275 // flag value is outside of its bounds 276 OUT_OF_BOUNDS, 277 // flag value violates its constraint 278 VIOLATES_CONSTRAINT, 279 // there is no flag with the given name 280 INVALID_FLAG, 281 // other, unspecified error related to setting the flag 282 ERR_OTHER 283 }; 284 285 const char* _type; 286 const char* _name; 287 void* _addr; 288 NOT_PRODUCT(const char* _doc;) 289 Flags _flags; 290 291 // points to all Flags static array 292 static Flag* flags; 293 294 // number of flags 295 static size_t numFlags; 296 297 static Flag* find_flag(const char* name) { return find_flag(name, strlen(name), true, true); }; 298 static Flag* find_flag(const char* name, size_t length, bool allow_locked = false, bool return_flag = false); 299 static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false); 300 301 void check_writable(); 302 303 bool is_bool() const; 304 bool get_bool() const; 305 void set_bool(bool value); 306 307 bool is_int() const; 308 int get_int() const; 309 void set_int(int value); 310 311 bool is_uint() const; 312 uint get_uint() const; 313 void set_uint(uint value); 314 315 bool is_intx() const; 316 intx get_intx() const; 317 void set_intx(intx value); 318 319 bool is_uintx() const; 320 uintx get_uintx() const; 321 void set_uintx(uintx value); 322 323 bool is_uint64_t() const; 324 uint64_t get_uint64_t() const; 325 void set_uint64_t(uint64_t value); 326 327 bool is_size_t() const; 328 size_t get_size_t() const; 329 void set_size_t(size_t value); 330 331 bool is_double() const; 332 double get_double() const; 333 void set_double(double value); 334 335 bool is_ccstr() const; 336 bool ccstr_accumulates() const; 337 ccstr get_ccstr() const; 338 void set_ccstr(ccstr value); 339 340 Flags get_origin(); 341 void set_origin(Flags origin); 342 343 bool is_default(); 344 bool is_ergonomic(); 345 bool is_command_line(); 346 347 bool is_product() const; 348 bool is_manageable() const; 349 bool is_diagnostic() const; 350 bool is_experimental() const; 351 bool is_notproduct() const; 352 bool is_develop() const; 353 bool is_read_write() const; 354 bool is_commercial() const; 355 356 bool is_constant_in_binary() const; 357 358 bool is_unlocker() const; 359 bool is_unlocked() const; 360 bool is_writeable() const; 361 bool is_external() const; 362 363 bool is_unlocker_ext() const; 364 bool is_unlocked_ext() const; 365 bool is_writeable_ext() const; 366 bool is_external_ext() const; 367 368 void unlock_diagnostic(); 369 370 void get_locked_message(char*, int) const; 371 void get_locked_message_ext(char*, int) const; 372 373 // printRanges will print out flags type, name and range values as expected by -XX:+PrintFlagsRanges 374 void print_on(outputStream* st, bool withComments = false, bool printRanges = false); 375 void print_kind(outputStream* st); 376 void print_as_flag(outputStream* st); 377 378 static const char* flag_error_str(Flag::Error error); 379}; 380 381// debug flags control various aspects of the VM and are global accessible 382 383// use FlagSetting to temporarily change some debug flag 384// e.g. FlagSetting fs(DebugThisAndThat, true); 385// restored to previous value upon leaving scope 386class FlagSetting { 387 bool val; 388 bool* flag; 389 public: 390 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 391 ~FlagSetting() { *flag = val; } 392}; 393 394 395class CounterSetting { 396 intx* counter; 397 public: 398 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 399 ~CounterSetting() { (*counter)--; } 400}; 401 402class IntFlagSetting { 403 int val; 404 int* flag; 405 public: 406 IntFlagSetting(int& fl, int newValue) { flag = &fl; val = fl; fl = newValue; } 407 ~IntFlagSetting() { *flag = val; } 408}; 409 410class UIntFlagSetting { 411 uint val; 412 uint* flag; 413 public: 414 UIntFlagSetting(uint& fl, uint newValue) { flag = &fl; val = fl; fl = newValue; } 415 ~UIntFlagSetting() { *flag = val; } 416}; 417 418class UIntXFlagSetting { 419 uintx val; 420 uintx* flag; 421 public: 422 UIntXFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; } 423 ~UIntXFlagSetting() { *flag = val; } 424}; 425 426class DoubleFlagSetting { 427 double val; 428 double* flag; 429 public: 430 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 431 ~DoubleFlagSetting() { *flag = val; } 432}; 433 434class SizeTFlagSetting { 435 size_t val; 436 size_t* flag; 437 public: 438 SizeTFlagSetting(size_t& fl, size_t newValue) { flag = &fl; val = fl; fl = newValue; } 439 ~SizeTFlagSetting() { *flag = val; } 440}; 441 442 443class CommandLineFlags { 444public: 445 static Flag::Error boolAt(const char* name, size_t len, bool* value, bool allow_locked = false, bool return_flag = false); 446 static Flag::Error boolAt(const char* name, bool* value, bool allow_locked = false, bool return_flag = false) { return boolAt(name, strlen(name), value, allow_locked, return_flag); } 447 static Flag::Error boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin); 448 static Flag::Error boolAtPut(const char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); } 449 450 static Flag::Error intAt(const char* name, size_t len, int* value, bool allow_locked = false, bool return_flag = false); 451 static Flag::Error intAt(const char* name, int* value, bool allow_locked = false, bool return_flag = false) { return intAt(name, strlen(name), value, allow_locked, return_flag); } 452 static Flag::Error intAtPut(const char* name, size_t len, int* value, Flag::Flags origin); 453 static Flag::Error intAtPut(const char* name, int* value, Flag::Flags origin) { return intAtPut(name, strlen(name), value, origin); } 454 455 static Flag::Error uintAt(const char* name, size_t len, uint* value, bool allow_locked = false, bool return_flag = false); 456 static Flag::Error uintAt(const char* name, uint* value, bool allow_locked = false, bool return_flag = false) { return uintAt(name, strlen(name), value, allow_locked, return_flag); } 457 static Flag::Error uintAtPut(const char* name, size_t len, uint* value, Flag::Flags origin); 458 static Flag::Error uintAtPut(const char* name, uint* value, Flag::Flags origin) { return uintAtPut(name, strlen(name), value, origin); } 459 460 static Flag::Error intxAt(const char* name, size_t len, intx* value, bool allow_locked = false, bool return_flag = false); 461 static Flag::Error intxAt(const char* name, intx* value, bool allow_locked = false, bool return_flag = false) { return intxAt(name, strlen(name), value, allow_locked, return_flag); } 462 static Flag::Error intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin); 463 static Flag::Error intxAtPut(const char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); } 464 465 static Flag::Error uintxAt(const char* name, size_t len, uintx* value, bool allow_locked = false, bool return_flag = false); 466 static Flag::Error uintxAt(const char* name, uintx* value, bool allow_locked = false, bool return_flag = false) { return uintxAt(name, strlen(name), value, allow_locked, return_flag); } 467 static Flag::Error uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin); 468 static Flag::Error uintxAtPut(const char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); } 469 470 static Flag::Error size_tAt(const char* name, size_t len, size_t* value, bool allow_locked = false, bool return_flag = false); 471 static Flag::Error size_tAt(const char* name, size_t* value, bool allow_locked = false, bool return_flag = false) { return size_tAt(name, strlen(name), value, allow_locked, return_flag); } 472 static Flag::Error size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin); 473 static Flag::Error size_tAtPut(const char* name, size_t* value, Flag::Flags origin) { return size_tAtPut(name, strlen(name), value, origin); } 474 475 static Flag::Error uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked = false, bool return_flag = false); 476 static Flag::Error uint64_tAt(const char* name, uint64_t* value, bool allow_locked = false, bool return_flag = false) { return uint64_tAt(name, strlen(name), value, allow_locked, return_flag); } 477 static Flag::Error uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin); 478 static Flag::Error uint64_tAtPut(const char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 479 480 static Flag::Error doubleAt(const char* name, size_t len, double* value, bool allow_locked = false, bool return_flag = false); 481 static Flag::Error doubleAt(const char* name, double* value, bool allow_locked = false, bool return_flag = false) { return doubleAt(name, strlen(name), value, allow_locked, return_flag); } 482 static Flag::Error doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin); 483 static Flag::Error doubleAtPut(const char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); } 484 485 static Flag::Error ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked = false, bool return_flag = false); 486 static Flag::Error ccstrAt(const char* name, ccstr* value, bool allow_locked = false, bool return_flag = false) { return ccstrAt(name, strlen(name), value, allow_locked, return_flag); } 487 // Contract: Flag will make private copy of the incoming value. 488 // Outgoing value is always malloc-ed, and caller MUST call free. 489 static Flag::Error ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin); 490 static Flag::Error ccstrAtPut(const char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); } 491 492 // Returns false if name is not a command line flag. 493 static bool wasSetOnCmdline(const char* name, bool* value); 494 static void printSetFlags(outputStream* out); 495 496 // printRanges will print out flags type, name and range values as expected by -XX:+PrintFlagsRanges 497 static void printFlags(outputStream* out, bool withComments, bool printRanges = false); 498 499 static void verify() PRODUCT_RETURN; 500}; 501 502// use this for flags that are true by default in the debug version but 503// false in the optimized version, and vice versa 504#ifdef ASSERT 505#define trueInDebug true 506#define falseInDebug false 507#else 508#define trueInDebug false 509#define falseInDebug true 510#endif 511 512// use this for flags that are true per default in the product build 513// but false in development builds, and vice versa 514#ifdef PRODUCT 515#define trueInProduct true 516#define falseInProduct false 517#else 518#define trueInProduct false 519#define falseInProduct true 520#endif 521 522#ifdef JAVASE_EMBEDDED 523#define falseInEmbedded false 524#else 525#define falseInEmbedded true 526#endif 527 528// develop flags are settable / visible only during development and are constant in the PRODUCT version 529// product flags are always settable / visible 530// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 531 532// A flag must be declared with one of the following types: 533// bool, int, uint, intx, uintx, size_t, ccstr, double, or uint64_t. 534// The type "ccstr" is an alias for "const char*" and is used 535// only in this file, because the macrology requires single-token type names. 536 537// Note: Diagnostic options not meant for VM tuning or for product modes. 538// They are to be used for VM quality assurance or field diagnosis 539// of VM bugs. They are hidden so that users will not be encouraged to 540// try them as if they were VM ordinary execution options. However, they 541// are available in the product version of the VM. Under instruction 542// from support engineers, VM customers can turn them on to collect 543// diagnostic information about VM problems. To use a VM diagnostic 544// option, you must first specify +UnlockDiagnosticVMOptions. 545// (This master switch also affects the behavior of -Xprintflags.) 546// 547// experimental flags are in support of features that are not 548// part of the officially supported product, but are available 549// for experimenting with. They could, for example, be performance 550// features that may not have undergone full or rigorous QA, but which may 551// help performance in some cases and released for experimentation 552// by the community of users and developers. This flag also allows one to 553// be able to build a fully supported product that nonetheless also 554// ships with some unsupported, lightly tested, experimental features. 555// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 556// UnlockExperimentalVMOptions flag, which allows the control and 557// modification of the experimental flags. 558// 559// Nota bene: neither diagnostic nor experimental options should be used casually, 560// and they are not supported on production loads, except under explicit 561// direction from support engineers. 562// 563// manageable flags are writeable external product flags. 564// They are dynamically writeable through the JDK management interface 565// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 566// These flags are external exported interface (see CCC). The list of 567// manageable flags can be queried programmatically through the management 568// interface. 569// 570// A flag can be made as "manageable" only if 571// - the flag is defined in a CCC as an external exported interface. 572// - the VM implementation supports dynamic setting of the flag. 573// This implies that the VM must *always* query the flag variable 574// and not reuse state related to the flag state at any given time. 575// - you want the flag to be queried programmatically by the customers. 576// 577// product_rw flags are writeable internal product flags. 578// They are like "manageable" flags but for internal/private use. 579// The list of product_rw flags are internal/private flags which 580// may be changed/removed in a future release. It can be set 581// through the management interface to get/set value 582// when the name of flag is supplied. 583// 584// A flag can be made as "product_rw" only if 585// - the VM implementation supports dynamic setting of the flag. 586// This implies that the VM must *always* query the flag variable 587// and not reuse state related to the flag state at any given time. 588// 589// Note that when there is a need to support develop flags to be writeable, 590// it can be done in the same way as product_rw. 591// 592// range is a macro that will expand to min and max arguments for range 593// checking code if provided - see commandLineFlagRangeList.hpp 594// 595// constraint is a macro that will expand to custom function call 596// for constraint checking if provided - see commandLineFlagConstraintList.hpp 597// 598 599#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product, range, constraint) \ 600 \ 601 lp64_product(bool, UseCompressedOops, false, \ 602 "Use 32-bit object references in 64-bit VM. " \ 603 "lp64_product means flag is always constant in 32 bit VM") \ 604 \ 605 lp64_product(bool, UseCompressedClassPointers, false, \ 606 "Use 32-bit class pointers in 64-bit VM. " \ 607 "lp64_product means flag is always constant in 32 bit VM") \ 608 \ 609 notproduct(bool, CheckCompressedOops, true, \ 610 "Generate checks in encoding/decoding code in debug VM") \ 611 \ 612 product_pd(size_t, HeapBaseMinAddress, \ 613 "OS specific low limit for heap base address") \ 614 \ 615 product(uintx, HeapSearchSteps, 3 PPC64_ONLY(+17), \ 616 "Heap allocation steps through preferred address regions to find" \ 617 " where it can allocate the heap. Number of steps to take per " \ 618 "region.") \ 619 range(1, max_uintx) \ 620 \ 621 diagnostic(bool, PrintCompressedOopsMode, false, \ 622 "Print compressed oops base address and encoding mode") \ 623 \ 624 lp64_product(intx, ObjectAlignmentInBytes, 8, \ 625 "Default object alignment in bytes, 8 is minimum") \ 626 range(8, 256) \ 627 constraint(ObjectAlignmentInBytesConstraintFunc,AtParse) \ 628 \ 629 product(bool, AssumeMP, false, \ 630 "Instruct the VM to assume multiple processors are available") \ 631 \ 632 /* UseMembar is theoretically a temp flag used for memory barrier */ \ 633 /* removal testing. It was supposed to be removed before FCS but has */ \ 634 /* been re-added (see 6401008) */ \ 635 product_pd(bool, UseMembar, \ 636 "(Unstable) Issues membars on thread state transitions") \ 637 \ 638 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ 639 "Clean the chunk pool asynchronously") \ 640 \ 641 experimental(bool, AlwaysSafeConstructors, false, \ 642 "Force safe construction, as if all fields are final.") \ 643 \ 644 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 645 "Enable normal processing of flags relating to field diagnostics")\ 646 \ 647 experimental(bool, UnlockExperimentalVMOptions, false, \ 648 "Enable normal processing of flags relating to experimental " \ 649 "features") \ 650 \ 651 product(bool, JavaMonitorsInStackTrace, true, \ 652 "Print information about Java monitor locks when the stacks are" \ 653 "dumped") \ 654 \ 655 product_pd(bool, UseLargePages, \ 656 "Use large page memory") \ 657 \ 658 product_pd(bool, UseLargePagesIndividualAllocation, \ 659 "Allocate large pages individually for better affinity") \ 660 \ 661 develop(bool, LargePagesIndividualAllocationInjectError, false, \ 662 "Fail large pages individual allocation") \ 663 \ 664 product(bool, UseLargePagesInMetaspace, false, \ 665 "Use large page memory in metaspace. " \ 666 "Only used if UseLargePages is enabled.") \ 667 \ 668 develop(bool, TracePageSizes, false, \ 669 "Trace page size selection and usage") \ 670 \ 671 product(bool, UseNUMA, false, \ 672 "Use NUMA if available") \ 673 \ 674 product(bool, UseNUMAInterleaving, false, \ 675 "Interleave memory across NUMA nodes if available") \ 676 \ 677 product(size_t, NUMAInterleaveGranularity, 2*M, \ 678 "Granularity to use for NUMA interleaving on Windows OS") \ 679 \ 680 product(bool, ForceNUMA, false, \ 681 "Force NUMA optimizations on single-node/UMA systems") \ 682 \ 683 product(uintx, NUMAChunkResizeWeight, 20, \ 684 "Percentage (0-100) used to weight the current sample when " \ 685 "computing exponentially decaying average for " \ 686 "AdaptiveNUMAChunkSizing") \ 687 range(0, 100) \ 688 \ 689 product(size_t, NUMASpaceResizeRate, 1*G, \ 690 "Do not reallocate more than this amount per collection") \ 691 \ 692 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 693 "Enable adaptive chunk sizing for NUMA") \ 694 \ 695 product(bool, NUMAStats, false, \ 696 "Print NUMA stats in detailed heap information") \ 697 \ 698 product(uintx, NUMAPageScanRate, 256, \ 699 "Maximum number of pages to include in the page scan procedure") \ 700 \ 701 product_pd(bool, NeedsDeoptSuspend, \ 702 "True for register window machines (sparc/ia64)") \ 703 \ 704 product(intx, UseSSE, 99, \ 705 "Highest supported SSE instructions set on x86/x64") \ 706 range(0, 99) \ 707 \ 708 product(bool, UseAES, false, \ 709 "Control whether AES instructions can be used on x86/x64") \ 710 \ 711 product(bool, UseSHA, false, \ 712 "Control whether SHA instructions can be used " \ 713 "on SPARC and on ARM") \ 714 \ 715 product(bool, UseGHASHIntrinsics, false, \ 716 "Use intrinsics for GHASH versions of crypto") \ 717 \ 718 product(size_t, LargePageSizeInBytes, 0, \ 719 "Large page size (0 to let VM choose the page size)") \ 720 \ 721 product(size_t, LargePageHeapSizeThreshold, 128*M, \ 722 "Use large pages if maximum heap is at least this big") \ 723 \ 724 product(bool, ForceTimeHighResolution, false, \ 725 "Using high time resolution (for Win32 only)") \ 726 \ 727 develop(bool, TraceItables, false, \ 728 "Trace initialization and use of itables") \ 729 \ 730 develop(bool, TracePcPatching, false, \ 731 "Trace usage of frame::patch_pc") \ 732 \ 733 develop(bool, TraceJumps, false, \ 734 "Trace assembly jumps in thread ring buffer") \ 735 \ 736 develop(bool, TraceRelocator, false, \ 737 "Trace the bytecode relocator") \ 738 \ 739 develop(bool, TraceLongCompiles, false, \ 740 "Print out every time compilation is longer than " \ 741 "a given threshold") \ 742 \ 743 develop(bool, SafepointALot, false, \ 744 "Generate a lot of safepoints. This works with " \ 745 "GuaranteedSafepointInterval") \ 746 \ 747 product_pd(bool, BackgroundCompilation, \ 748 "A thread requesting compilation is not blocked during " \ 749 "compilation") \ 750 \ 751 product(bool, PrintVMQWaitTime, false, \ 752 "Print out the waiting time in VM operation queue") \ 753 \ 754 develop(bool, TraceOopMapGeneration, false, \ 755 "Show OopMapGeneration") \ 756 \ 757 product(bool, MethodFlushing, true, \ 758 "Reclamation of zombie and not-entrant methods") \ 759 \ 760 develop(bool, VerifyStack, false, \ 761 "Verify stack of each thread when it is entering a runtime call") \ 762 \ 763 diagnostic(bool, ForceUnreachable, false, \ 764 "Make all non code cache addresses to be unreachable by " \ 765 "forcing use of 64bit literal fixups") \ 766 \ 767 notproduct(bool, StressDerivedPointers, false, \ 768 "Force scavenge when a derived pointer is detected on stack " \ 769 "after rtm call") \ 770 \ 771 develop(bool, TraceDerivedPointers, false, \ 772 "Trace traversal of derived pointers on stack") \ 773 \ 774 notproduct(bool, TraceCodeBlobStacks, false, \ 775 "Trace stack-walk of codeblobs") \ 776 \ 777 product(bool, PrintJNIResolving, false, \ 778 "Used to implement -v:jni") \ 779 \ 780 notproduct(bool, PrintRewrites, false, \ 781 "Print methods that are being rewritten") \ 782 \ 783 product(bool, UseInlineCaches, true, \ 784 "Use Inline Caches for virtual calls ") \ 785 \ 786 develop(bool, InlineArrayCopy, true, \ 787 "Inline arraycopy native that is known to be part of " \ 788 "base library DLL") \ 789 \ 790 develop(bool, InlineObjectHash, true, \ 791 "Inline Object::hashCode() native that is known to be part " \ 792 "of base library DLL") \ 793 \ 794 develop(bool, InlineNatives, true, \ 795 "Inline natives that are known to be part of base library DLL") \ 796 \ 797 develop(bool, InlineMathNatives, true, \ 798 "Inline SinD, CosD, etc.") \ 799 \ 800 develop(bool, InlineClassNatives, true, \ 801 "Inline Class.isInstance, etc") \ 802 \ 803 develop(bool, InlineThreadNatives, true, \ 804 "Inline Thread.currentThread, etc") \ 805 \ 806 develop(bool, InlineUnsafeOps, true, \ 807 "Inline memory ops (native methods) from sun.misc.Unsafe") \ 808 \ 809 product(bool, CriticalJNINatives, true, \ 810 "Check for critical JNI entry points") \ 811 \ 812 notproduct(bool, StressCriticalJNINatives, false, \ 813 "Exercise register saving code in critical natives") \ 814 \ 815 product(bool, UseSSE42Intrinsics, false, \ 816 "SSE4.2 versions of intrinsics") \ 817 \ 818 product(bool, UseAESIntrinsics, false, \ 819 "Use intrinsics for AES versions of crypto") \ 820 \ 821 product(bool, UseSHA1Intrinsics, false, \ 822 "Use intrinsics for SHA-1 crypto hash function. " \ 823 "Requires that UseSHA is enabled.") \ 824 \ 825 product(bool, UseSHA256Intrinsics, false, \ 826 "Use intrinsics for SHA-224 and SHA-256 crypto hash functions. " \ 827 "Requires that UseSHA is enabled.") \ 828 \ 829 product(bool, UseSHA512Intrinsics, false, \ 830 "Use intrinsics for SHA-384 and SHA-512 crypto hash functions. " \ 831 "Requires that UseSHA is enabled.") \ 832 \ 833 product(bool, UseCRC32Intrinsics, false, \ 834 "use intrinsics for java.util.zip.CRC32") \ 835 \ 836 product(bool, UseCRC32CIntrinsics, false, \ 837 "use intrinsics for java.util.zip.CRC32C") \ 838 \ 839 product(bool, UseAdler32Intrinsics, false, \ 840 "use intrinsics for java.util.zip.Adler32") \ 841 \ 842 diagnostic(ccstrlist, DisableIntrinsic, "", \ 843 "do not expand intrinsics whose (internal) names appear here") \ 844 \ 845 develop(bool, TraceCallFixup, false, \ 846 "Trace all call fixups") \ 847 \ 848 develop(bool, DeoptimizeALot, false, \ 849 "Deoptimize at every exit from the runtime system") \ 850 \ 851 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 852 "A comma separated list of bcis to deoptimize at") \ 853 \ 854 product(bool, DeoptimizeRandom, false, \ 855 "Deoptimize random frames on random exit from the runtime system")\ 856 \ 857 notproduct(bool, ZombieALot, false, \ 858 "Create zombies (non-entrant) at exit from the runtime system") \ 859 \ 860 product(bool, UnlinkSymbolsALot, false, \ 861 "Unlink unreferenced symbols from the symbol table at safepoints")\ 862 \ 863 notproduct(bool, WalkStackALot, false, \ 864 "Trace stack (no print) at every exit from the runtime system") \ 865 \ 866 product(bool, Debugging, false, \ 867 "Set when executing debug methods in debug.cpp " \ 868 "(to prevent triggering assertions)") \ 869 \ 870 notproduct(bool, StrictSafepointChecks, trueInDebug, \ 871 "Enable strict checks that safepoints cannot happen for threads " \ 872 "that use No_Safepoint_Verifier") \ 873 \ 874 notproduct(bool, VerifyLastFrame, false, \ 875 "Verify oops on last frame on entry to VM") \ 876 \ 877 develop(bool, TraceHandleAllocation, false, \ 878 "Print out warnings when suspiciously many handles are allocated")\ 879 \ 880 product(bool, FailOverToOldVerifier, true, \ 881 "Fail over to old verifier when split verifier fails") \ 882 \ 883 develop(bool, ShowSafepointMsgs, false, \ 884 "Show message about safepoint synchronization") \ 885 \ 886 product(bool, SafepointTimeout, false, \ 887 "Time out and warn or fail after SafepointTimeoutDelay " \ 888 "milliseconds if failed to reach safepoint") \ 889 \ 890 develop(bool, DieOnSafepointTimeout, false, \ 891 "Die upon failure to reach safepoint (see SafepointTimeout)") \ 892 \ 893 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 894 /* typically, at most a few retries are needed */ \ 895 product(intx, SuspendRetryCount, 50, \ 896 "Maximum retry count for an external suspend request") \ 897 \ 898 product(intx, SuspendRetryDelay, 5, \ 899 "Milliseconds to delay per retry (* current_retry_count)") \ 900 \ 901 product(bool, AssertOnSuspendWaitFailure, false, \ 902 "Assert/Guarantee on external suspend wait failure") \ 903 \ 904 product(bool, TraceSuspendWaitFailures, false, \ 905 "Trace external suspend wait failures") \ 906 \ 907 product(bool, MaxFDLimit, true, \ 908 "Bump the number of file descriptors to maximum in Solaris") \ 909 \ 910 diagnostic(bool, LogEvents, true, \ 911 "Enable the various ring buffer event logs") \ 912 \ 913 diagnostic(uintx, LogEventsBufferEntries, 10, \ 914 "Number of ring buffer event logs") \ 915 range(1, NOT_LP64(1*K) LP64_ONLY(1*M)) \ 916 \ 917 product(bool, BytecodeVerificationRemote, true, \ 918 "Enable the Java bytecode verifier for remote classes") \ 919 \ 920 product(bool, BytecodeVerificationLocal, false, \ 921 "Enable the Java bytecode verifier for local classes") \ 922 \ 923 develop(bool, ForceFloatExceptions, trueInDebug, \ 924 "Force exceptions on FP stack under/overflow") \ 925 \ 926 develop(bool, VerifyStackAtCalls, false, \ 927 "Verify that the stack pointer is unchanged after calls") \ 928 \ 929 develop(bool, TraceJavaAssertions, false, \ 930 "Trace java language assertions") \ 931 \ 932 notproduct(bool, CheckAssertionStatusDirectives, false, \ 933 "Temporary - see javaClasses.cpp") \ 934 \ 935 notproduct(bool, PrintMallocFree, false, \ 936 "Trace calls to C heap malloc/free allocation") \ 937 \ 938 product(bool, PrintOopAddress, false, \ 939 "Always print the location of the oop") \ 940 \ 941 notproduct(bool, VerifyCodeCache, false, \ 942 "Verify code cache on memory allocation/deallocation") \ 943 \ 944 develop(bool, UseMallocOnly, false, \ 945 "Use only malloc/free for allocation (no resource area/arena)") \ 946 \ 947 develop(bool, PrintMalloc, false, \ 948 "Print all malloc/free calls") \ 949 \ 950 develop(bool, PrintMallocStatistics, false, \ 951 "Print malloc/free statistics") \ 952 \ 953 develop(bool, ZapResourceArea, trueInDebug, \ 954 "Zap freed resource/arena space with 0xABABABAB") \ 955 \ 956 notproduct(bool, ZapVMHandleArea, trueInDebug, \ 957 "Zap freed VM handle space with 0xBCBCBCBC") \ 958 \ 959 develop(bool, ZapJNIHandleArea, trueInDebug, \ 960 "Zap freed JNI handle space with 0xFEFEFEFE") \ 961 \ 962 notproduct(bool, ZapStackSegments, trueInDebug, \ 963 "Zap allocated/freed stack segments with 0xFADFADED") \ 964 \ 965 develop(bool, ZapUnusedHeapArea, trueInDebug, \ 966 "Zap unused heap space with 0xBAADBABE") \ 967 \ 968 develop(bool, TraceZapUnusedHeapArea, false, \ 969 "Trace zapping of unused heap space") \ 970 \ 971 develop(bool, CheckZapUnusedHeapArea, false, \ 972 "Check zapping of unused heap space") \ 973 \ 974 develop(bool, ZapFillerObjects, trueInDebug, \ 975 "Zap filler objects with 0xDEAFBABE") \ 976 \ 977 develop(bool, PrintVMMessages, true, \ 978 "Print VM messages on console") \ 979 \ 980 product(bool, PrintGCApplicationConcurrentTime, false, \ 981 "Print the time the application has been running") \ 982 \ 983 product(bool, PrintGCApplicationStoppedTime, false, \ 984 "Print the time the application has been stopped") \ 985 \ 986 diagnostic(bool, VerboseVerification, false, \ 987 "Display detailed verification details") \ 988 \ 989 notproduct(uintx, ErrorHandlerTest, 0, \ 990 "If > 0, provokes an error after VM initialization; the value " \ 991 "determines which error to provoke. See test_error_handler() " \ 992 "in debug.cpp.") \ 993 \ 994 notproduct(uintx, TestCrashInErrorHandler, 0, \ 995 "If > 0, provokes an error inside VM error handler (a secondary " \ 996 "crash). see test_error_handler() in debug.cpp.") \ 997 \ 998 notproduct(bool, TestSafeFetchInErrorHandler, false, \ 999 "If true, tests SafeFetch inside error handler.") \ 1000 \ 1001 develop(bool, Verbose, false, \ 1002 "Print additional debugging information from other modes") \ 1003 \ 1004 develop(bool, PrintMiscellaneous, false, \ 1005 "Print uncategorized debugging information (requires +Verbose)") \ 1006 \ 1007 develop(bool, WizardMode, false, \ 1008 "Print much more debugging information") \ 1009 \ 1010 product(bool, ShowMessageBoxOnError, false, \ 1011 "Keep process alive on VM fatal error") \ 1012 \ 1013 product(bool, CreateCoredumpOnCrash, true, \ 1014 "Create core/mini dump on VM fatal error") \ 1015 \ 1016 product(uintx, ErrorLogTimeout, 2 * 60, \ 1017 "Timeout, in seconds, to limit the time spent on writing an " \ 1018 "error log in case of a crash.") \ 1019 \ 1020 product_pd(bool, UseOSErrorReporting, \ 1021 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 1022 \ 1023 product(bool, SuppressFatalErrorMessage, false, \ 1024 "Report NO fatal error message (avoid deadlock)") \ 1025 \ 1026 product(ccstrlist, OnError, "", \ 1027 "Run user-defined commands on fatal error; see VMError.cpp " \ 1028 "for examples") \ 1029 \ 1030 product(ccstrlist, OnOutOfMemoryError, "", \ 1031 "Run user-defined commands on first java.lang.OutOfMemoryError") \ 1032 \ 1033 manageable(bool, HeapDumpBeforeFullGC, false, \ 1034 "Dump heap to file before any major stop-the-world GC") \ 1035 \ 1036 manageable(bool, HeapDumpAfterFullGC, false, \ 1037 "Dump heap to file after any major stop-the-world GC") \ 1038 \ 1039 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 1040 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 1041 \ 1042 manageable(ccstr, HeapDumpPath, NULL, \ 1043 "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \ 1044 "directory) of the dump file (defaults to java_pid<pid>.hprof " \ 1045 "in the working directory)") \ 1046 \ 1047 develop(size_t, SegmentedHeapDumpThreshold, 2*G, \ 1048 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 1049 "when the heap usage is larger than this") \ 1050 \ 1051 develop(size_t, HeapDumpSegmentSize, 1*G, \ 1052 "Approximate segment size when generating a segmented heap dump") \ 1053 \ 1054 develop(bool, BreakAtWarning, false, \ 1055 "Execute breakpoint upon encountering VM warning") \ 1056 \ 1057 develop(bool, TraceVMOperation, false, \ 1058 "Trace VM operations") \ 1059 \ 1060 develop(bool, UseFakeTimers, false, \ 1061 "Tell whether the VM should use system time or a fake timer") \ 1062 \ 1063 product(ccstr, NativeMemoryTracking, "off", \ 1064 "Native memory tracking options") \ 1065 \ 1066 diagnostic(bool, PrintNMTStatistics, false, \ 1067 "Print native memory tracking summary data if it is on") \ 1068 \ 1069 diagnostic(bool, LogCompilation, false, \ 1070 "Log compilation activity in detail to LogFile") \ 1071 \ 1072 product(bool, PrintCompilation, false, \ 1073 "Print compilations") \ 1074 \ 1075 diagnostic(bool, TraceNMethodInstalls, false, \ 1076 "Trace nmethod installation") \ 1077 \ 1078 diagnostic(intx, ScavengeRootsInCode, 2, \ 1079 "0: do not allow scavengable oops in the code cache; " \ 1080 "1: allow scavenging from the code cache; " \ 1081 "2: emit as many constants as the compiler can see") \ 1082 range(0, 2) \ 1083 \ 1084 product(bool, AlwaysRestoreFPU, false, \ 1085 "Restore the FPU control word after every JNI call (expensive)") \ 1086 \ 1087 diagnostic(bool, PrintCompilation2, false, \ 1088 "Print additional statistics per compilation") \ 1089 \ 1090 diagnostic(bool, PrintAdapterHandlers, false, \ 1091 "Print code generated for i2c/c2i adapters") \ 1092 \ 1093 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 1094 "Verify that i2c/c2i adapters are called properly") \ 1095 \ 1096 develop(bool, VerifyAdapterSharing, false, \ 1097 "Verify that the code for shared adapters is the equivalent") \ 1098 \ 1099 diagnostic(bool, PrintAssembly, false, \ 1100 "Print assembly code (using external disassembler.so)") \ 1101 \ 1102 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 1103 "Print options string passed to disassembler.so") \ 1104 \ 1105 notproduct(bool, PrintNMethodStatistics, false, \ 1106 "Print a summary statistic for the generated nmethods") \ 1107 \ 1108 diagnostic(bool, PrintNMethods, false, \ 1109 "Print assembly code for nmethods when generated") \ 1110 \ 1111 diagnostic(intx, PrintNMethodsAtLevel, -1, \ 1112 "Only print code for nmethods at the given compilation level") \ 1113 \ 1114 diagnostic(bool, PrintNativeNMethods, false, \ 1115 "Print assembly code for native nmethods when generated") \ 1116 \ 1117 develop(bool, PrintDebugInfo, false, \ 1118 "Print debug information for all nmethods when generated") \ 1119 \ 1120 develop(bool, PrintRelocations, false, \ 1121 "Print relocation information for all nmethods when generated") \ 1122 \ 1123 develop(bool, PrintDependencies, false, \ 1124 "Print dependency information for all nmethods when generated") \ 1125 \ 1126 develop(bool, PrintExceptionHandlers, false, \ 1127 "Print exception handler tables for all nmethods when generated") \ 1128 \ 1129 develop(bool, StressCompiledExceptionHandlers, false, \ 1130 "Exercise compiled exception handlers") \ 1131 \ 1132 develop(bool, InterceptOSException, false, \ 1133 "Start debugger when an implicit OS (e.g. NULL) " \ 1134 "exception happens") \ 1135 \ 1136 product(bool, PrintCodeCache, false, \ 1137 "Print the code cache memory usage when exiting") \ 1138 \ 1139 develop(bool, PrintCodeCache2, false, \ 1140 "Print detailed usage information on the code cache when exiting")\ 1141 \ 1142 product(bool, PrintCodeCacheOnCompilation, false, \ 1143 "Print the code cache memory usage each time a method is " \ 1144 "compiled") \ 1145 \ 1146 diagnostic(bool, PrintStubCode, false, \ 1147 "Print generated stub code") \ 1148 \ 1149 product(bool, StackTraceInThrowable, true, \ 1150 "Collect backtrace in throwable when exception happens") \ 1151 \ 1152 product(bool, OmitStackTraceInFastThrow, true, \ 1153 "Omit backtraces for some 'hot' exceptions in optimized code") \ 1154 \ 1155 product(bool, ProfilerPrintByteCodeStatistics, false, \ 1156 "Print bytecode statistics when dumping profiler output") \ 1157 \ 1158 product(bool, ProfilerRecordPC, false, \ 1159 "Collect ticks for each 16 byte interval of compiled code") \ 1160 \ 1161 product(bool, ProfileVM, false, \ 1162 "Profile ticks that fall within VM (either in the VM Thread " \ 1163 "or VM code called through stubs)") \ 1164 \ 1165 product(bool, ProfileIntervals, false, \ 1166 "Print profiles for each interval (see ProfileIntervalsTicks)") \ 1167 \ 1168 notproduct(bool, ProfilerCheckIntervals, false, \ 1169 "Collect and print information on spacing of profiler ticks") \ 1170 \ 1171 product(bool, PrintWarnings, true, \ 1172 "Print JVM warnings to output stream") \ 1173 \ 1174 notproduct(uintx, WarnOnStalledSpinLock, 0, \ 1175 "Print warnings for stalled SpinLocks") \ 1176 \ 1177 product(bool, RegisterFinalizersAtInit, true, \ 1178 "Register finalizable objects at end of Object.<init> or " \ 1179 "after allocation") \ 1180 \ 1181 develop(bool, RegisterReferences, true, \ 1182 "Tell whether the VM should register soft/weak/final/phantom " \ 1183 "references") \ 1184 \ 1185 develop(bool, IgnoreRewrites, false, \ 1186 "Suppress rewrites of bytecodes in the oopmap generator. " \ 1187 "This is unsafe!") \ 1188 \ 1189 develop(bool, PrintCodeCacheExtension, false, \ 1190 "Print extension of code cache") \ 1191 \ 1192 develop(bool, UsePrivilegedStack, true, \ 1193 "Enable the security JVM functions") \ 1194 \ 1195 develop(bool, ProtectionDomainVerification, true, \ 1196 "Verify protection domain before resolution in system dictionary")\ 1197 \ 1198 product(bool, ClassUnloading, true, \ 1199 "Do unloading of classes") \ 1200 \ 1201 product(bool, ClassUnloadingWithConcurrentMark, true, \ 1202 "Do unloading of classes with a concurrent marking cycle") \ 1203 \ 1204 develop(bool, DisableStartThread, false, \ 1205 "Disable starting of additional Java threads " \ 1206 "(for debugging only)") \ 1207 \ 1208 develop(bool, MemProfiling, false, \ 1209 "Write memory usage profiling to log file") \ 1210 \ 1211 notproduct(bool, PrintSystemDictionaryAtExit, false, \ 1212 "Print the system dictionary at exit") \ 1213 \ 1214 experimental(intx, PredictedLoadedClassCount, 0, \ 1215 "Experimental: Tune loaded class cache starting size") \ 1216 \ 1217 diagnostic(bool, UnsyncloadClass, false, \ 1218 "Unstable: VM calls loadClass unsynchronized. Custom " \ 1219 "class loader must call VM synchronized for findClass " \ 1220 "and defineClass.") \ 1221 \ 1222 product(bool, AlwaysLockClassLoader, false, \ 1223 "Require the VM to acquire the class loader lock before calling " \ 1224 "loadClass() even for class loaders registering " \ 1225 "as parallel capable") \ 1226 \ 1227 product(bool, AllowParallelDefineClass, false, \ 1228 "Allow parallel defineClass requests for class loaders " \ 1229 "registering as parallel capable") \ 1230 \ 1231 product(bool, MustCallLoadClassInternal, false, \ 1232 "Call loadClassInternal() rather than loadClass()") \ 1233 \ 1234 product_pd(bool, DontYieldALot, \ 1235 "Throw away obvious excess yield calls") \ 1236 \ 1237 product_pd(bool, ConvertSleepToYield, \ 1238 "Convert sleep(0) to thread yield " \ 1239 "(may be off for Solaris to improve GUI)") \ 1240 \ 1241 product(bool, ConvertYieldToSleep, false, \ 1242 "Convert yield to a sleep of MinSleepInterval to simulate Win32 " \ 1243 "behavior") \ 1244 \ 1245 develop(bool, UseDetachedThreads, true, \ 1246 "Use detached threads that are recycled upon termination " \ 1247 "(for Solaris only)") \ 1248 \ 1249 product(bool, UseLWPSynchronization, true, \ 1250 "Use LWP-based instead of libthread-based synchronization " \ 1251 "(SPARC only)") \ 1252 \ 1253 experimental(ccstr, SyncKnobs, NULL, \ 1254 "(Unstable) Various monitor synchronization tunables") \ 1255 \ 1256 experimental(intx, EmitSync, 0, \ 1257 "(Unsafe, Unstable) " \ 1258 "Control emission of inline sync fast-path code") \ 1259 \ 1260 product(intx, MonitorBound, 0, "Bound Monitor population") \ 1261 range(0, max_jint) \ 1262 \ 1263 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ 1264 \ 1265 experimental(intx, SyncFlags, 0, "(Unsafe, Unstable) " \ 1266 "Experimental Sync flags") \ 1267 \ 1268 experimental(intx, SyncVerbose, 0, "(Unstable)") \ 1269 \ 1270 diagnostic(bool, InlineNotify, true, "intrinsify subset of notify") \ 1271 \ 1272 experimental(intx, ClearFPUAtPark, 0, "(Unsafe, Unstable)") \ 1273 \ 1274 experimental(intx, hashCode, 5, \ 1275 "(Unstable) select hashCode generation algorithm") \ 1276 \ 1277 experimental(intx, WorkAroundNPTLTimedWaitHang, 0, \ 1278 "(Unstable, Linux-specific) " \ 1279 "avoid NPTL-FUTEX hang pthread_cond_timedwait") \ 1280 \ 1281 product(bool, FilterSpuriousWakeups, true, \ 1282 "When true prevents OS-level spurious, or premature, wakeups " \ 1283 "from Object.wait (Ignored for Windows)") \ 1284 \ 1285 experimental(intx, NativeMonitorTimeout, -1, "(Unstable)") \ 1286 \ 1287 experimental(intx, NativeMonitorFlags, 0, "(Unstable)") \ 1288 \ 1289 experimental(intx, NativeMonitorSpinLimit, 20, "(Unstable)") \ 1290 \ 1291 develop(bool, UsePthreads, false, \ 1292 "Use pthread-based instead of libthread-based synchronization " \ 1293 "(SPARC only)") \ 1294 \ 1295 product(bool, ReduceSignalUsage, false, \ 1296 "Reduce the use of OS signals in Java and/or the VM") \ 1297 \ 1298 develop_pd(bool, ShareVtableStubs, \ 1299 "Share vtable stubs (smaller code but worse branch prediction") \ 1300 \ 1301 develop(bool, LoadLineNumberTables, true, \ 1302 "Tell whether the class file parser loads line number tables") \ 1303 \ 1304 develop(bool, LoadLocalVariableTables, true, \ 1305 "Tell whether the class file parser loads local variable tables") \ 1306 \ 1307 develop(bool, LoadLocalVariableTypeTables, true, \ 1308 "Tell whether the class file parser loads local variable type" \ 1309 "tables") \ 1310 \ 1311 product(bool, AllowUserSignalHandlers, false, \ 1312 "Do not complain if the application installs signal handlers " \ 1313 "(Solaris & Linux only)") \ 1314 \ 1315 product(bool, UseSignalChaining, true, \ 1316 "Use signal-chaining to invoke signal handlers installed " \ 1317 "by the application (Solaris & Linux only)") \ 1318 \ 1319 product(bool, UseAltSigs, false, \ 1320 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 1321 "internal signals (Solaris only)") \ 1322 \ 1323 product(bool, AllowJNIEnvProxy, false, \ 1324 "Allow JNIEnv proxies for jdbx") \ 1325 \ 1326 product(bool, JNIDetachReleasesMonitors, true, \ 1327 "JNI DetachCurrentThread releases monitors owned by thread") \ 1328 \ 1329 product(bool, RestoreMXCSROnJNICalls, false, \ 1330 "Restore MXCSR when returning from JNI calls") \ 1331 \ 1332 product(bool, CheckJNICalls, false, \ 1333 "Verify all arguments to JNI calls") \ 1334 \ 1335 product(bool, CheckEndorsedAndExtDirs, false, \ 1336 "Verify the endorsed and extension directories are not used") \ 1337 \ 1338 product(bool, UseFastJNIAccessors, true, \ 1339 "Use optimized versions of Get<Primitive>Field") \ 1340 \ 1341 product(intx, MaxJNILocalCapacity, 65536, \ 1342 "Maximum allowable local JNI handle capacity to " \ 1343 "EnsureLocalCapacity() and PushLocalFrame(), " \ 1344 "where <= 0 is unlimited, default: 65536") \ 1345 \ 1346 product(bool, EagerXrunInit, false, \ 1347 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 1348 "but not all -Xrun libraries may support the state of the VM " \ 1349 "at this time") \ 1350 \ 1351 product(bool, PreserveAllAnnotations, false, \ 1352 "Preserve RuntimeInvisibleAnnotations as well " \ 1353 "as RuntimeVisibleAnnotations") \ 1354 \ 1355 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 1356 "Number of OutOfMemoryErrors preallocated with backtrace") \ 1357 \ 1358 product(bool, UseXMMForArrayCopy, false, \ 1359 "Use SSE2 MOVQ instruction for Arraycopy") \ 1360 \ 1361 product(intx, FieldsAllocationStyle, 1, \ 1362 "0 - type based with oops first, " \ 1363 "1 - with oops last, " \ 1364 "2 - oops in super and sub classes are together") \ 1365 range(0, 2) \ 1366 \ 1367 product(bool, CompactFields, true, \ 1368 "Allocate nonstatic fields in gaps between previous fields") \ 1369 \ 1370 notproduct(bool, PrintFieldLayout, false, \ 1371 "Print field layout for each class") \ 1372 \ 1373 /* Need to limit the extent of the padding to reasonable size. */\ 1374 /* 8K is well beyond the reasonable HW cache line size, even with */\ 1375 /* aggressive prefetching, while still leaving the room for segregating */\ 1376 /* among the distinct pages. */\ 1377 product(intx, ContendedPaddingWidth, 128, \ 1378 "How many bytes to pad the fields/classes marked @Contended with")\ 1379 range(0, 8192) \ 1380 constraint(ContendedPaddingWidthConstraintFunc,AtParse) \ 1381 \ 1382 product(bool, EnableContended, true, \ 1383 "Enable @Contended annotation support") \ 1384 \ 1385 product(bool, RestrictContended, true, \ 1386 "Restrict @Contended to trusted classes") \ 1387 \ 1388 product(bool, UseBiasedLocking, true, \ 1389 "Enable biased locking in JVM") \ 1390 \ 1391 product(intx, BiasedLockingStartupDelay, 4000, \ 1392 "Number of milliseconds to wait before enabling biased locking") \ 1393 \ 1394 diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1395 "Print statistics of biased locking in JVM") \ 1396 \ 1397 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1398 "Threshold of number of revocations per type to try to " \ 1399 "rebias all objects in the heap of that type") \ 1400 \ 1401 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1402 "Threshold of number of revocations per type to permanently " \ 1403 "revoke biases of all objects in the heap of that type") \ 1404 \ 1405 product(intx, BiasedLockingDecayTime, 25000, \ 1406 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1407 "type after previous bulk rebias") \ 1408 \ 1409 /* tracing */ \ 1410 \ 1411 notproduct(bool, TraceRuntimeCalls, false, \ 1412 "Trace run-time calls") \ 1413 \ 1414 develop(bool, TraceJNICalls, false, \ 1415 "Trace JNI calls") \ 1416 \ 1417 develop(bool, StressRewriter, false, \ 1418 "Stress linktime bytecode rewriting") \ 1419 \ 1420 notproduct(bool, TraceJVMCalls, false, \ 1421 "Trace JVM calls") \ 1422 \ 1423 product(ccstr, TraceJVMTI, NULL, \ 1424 "Trace flags for JVMTI functions and events") \ 1425 \ 1426 /* This option can change an EMCP method into an obsolete method. */ \ 1427 /* This can affect tests that except specific methods to be EMCP. */ \ 1428 /* This option should be used with caution. */ \ 1429 product(bool, StressLdcRewrite, false, \ 1430 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1431 \ 1432 product(intx, TraceRedefineClasses, 0, \ 1433 "Trace level for JVMTI RedefineClasses") \ 1434 \ 1435 /* change to false by default sometime after Mustang */ \ 1436 product(bool, VerifyMergedCPBytecodes, true, \ 1437 "Verify bytecodes after RedefineClasses constant pool merging") \ 1438 \ 1439 develop(bool, TraceJNIHandleAllocation, false, \ 1440 "Trace allocation/deallocation of JNI handle blocks") \ 1441 \ 1442 develop(bool, TraceBytecodes, false, \ 1443 "Trace bytecode execution") \ 1444 \ 1445 develop(bool, TraceClassInitialization, false, \ 1446 "Trace class initialization") \ 1447 \ 1448 product(bool, TraceExceptions, false, \ 1449 "Trace exceptions") \ 1450 \ 1451 develop(bool, TraceICs, false, \ 1452 "Trace inline cache changes") \ 1453 \ 1454 notproduct(bool, TraceInvocationCounterOverflow, false, \ 1455 "Trace method invocation counter overflow") \ 1456 \ 1457 develop(bool, TraceInlineCacheClearing, false, \ 1458 "Trace clearing of inline caches in nmethods") \ 1459 \ 1460 develop(bool, TraceDependencies, false, \ 1461 "Trace dependencies") \ 1462 \ 1463 develop(bool, VerifyDependencies, trueInDebug, \ 1464 "Exercise and verify the compilation dependency mechanism") \ 1465 \ 1466 develop(bool, TraceNewOopMapGeneration, false, \ 1467 "Trace OopMapGeneration") \ 1468 \ 1469 develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1470 "Trace OopMapGeneration: print detailed cell states") \ 1471 \ 1472 develop(bool, TimeOopMap, false, \ 1473 "Time calls to GenerateOopMap::compute_map() in sum") \ 1474 \ 1475 develop(bool, TimeOopMap2, false, \ 1476 "Time calls to GenerateOopMap::compute_map() individually") \ 1477 \ 1478 develop(bool, TraceMonitorMismatch, false, \ 1479 "Trace monitor matching failures during OopMapGeneration") \ 1480 \ 1481 develop(bool, TraceOopMapRewrites, false, \ 1482 "Trace rewriting of method oops during oop map generation") \ 1483 \ 1484 develop(bool, TraceSafepoint, false, \ 1485 "Trace safepoint operations") \ 1486 \ 1487 develop(bool, TraceICBuffer, false, \ 1488 "Trace usage of IC buffer") \ 1489 \ 1490 develop(bool, TraceCompiledIC, false, \ 1491 "Trace changes of compiled IC") \ 1492 \ 1493 develop(bool, TraceStartupTime, false, \ 1494 "Trace setup time") \ 1495 \ 1496 develop(bool, TraceProtectionDomainVerification, false, \ 1497 "Trace protection domain verification") \ 1498 \ 1499 develop(bool, TraceClearedExceptions, false, \ 1500 "Print when an exception is forcibly cleared") \ 1501 \ 1502 product(bool, TraceClassResolution, false, \ 1503 "Trace all constant pool resolutions (for debugging)") \ 1504 \ 1505 product(bool, TraceBiasedLocking, false, \ 1506 "Trace biased locking in JVM") \ 1507 \ 1508 product(bool, TraceMonitorInflation, false, \ 1509 "Trace monitor inflation in JVM") \ 1510 \ 1511 /* gc */ \ 1512 \ 1513 product(bool, UseSerialGC, false, \ 1514 "Use the Serial garbage collector") \ 1515 \ 1516 product(bool, UseG1GC, false, \ 1517 "Use the Garbage-First garbage collector") \ 1518 \ 1519 product(bool, UseParallelGC, false, \ 1520 "Use the Parallel Scavenge garbage collector") \ 1521 \ 1522 product(bool, UseParallelOldGC, false, \ 1523 "Use the Parallel Old garbage collector") \ 1524 \ 1525 product(uintx, HeapMaximumCompactionInterval, 20, \ 1526 "How often should we maximally compact the heap (not allowing " \ 1527 "any dead space)") \ 1528 \ 1529 product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1530 "The collection count for the first maximum compaction") \ 1531 \ 1532 product(bool, UseMaximumCompactionOnSystemGC, true, \ 1533 "Use maximum compaction in the Parallel Old garbage collector " \ 1534 "for a system GC") \ 1535 \ 1536 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1537 "The mean used by the parallel compact dead wood " \ 1538 "limiter (a number between 0-100)") \ 1539 range(0, 100) \ 1540 \ 1541 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1542 "The standard deviation used by the parallel compact dead wood " \ 1543 "limiter (a number between 0-100)") \ 1544 range(0, 100) \ 1545 \ 1546 product(uint, ParallelGCThreads, 0, \ 1547 "Number of parallel threads parallel gc will use") \ 1548 constraint(ParallelGCThreadsConstraintFunc,AfterErgo) \ 1549 \ 1550 diagnostic(bool, UseSemaphoreGCThreadsSynchronization, true, \ 1551 "Use semaphore synchronization for the GC Threads, " \ 1552 "instead of synchronization based on mutexes") \ 1553 \ 1554 product(bool, UseDynamicNumberOfGCThreads, false, \ 1555 "Dynamically choose the number of parallel threads " \ 1556 "parallel gc will use") \ 1557 \ 1558 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 1559 "Force dynamic selection of the number of " \ 1560 "parallel threads parallel gc will use to aid debugging") \ 1561 \ 1562 product(size_t, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 1563 "Size of heap (bytes) per GC thread used in calculating the " \ 1564 "number of GC threads") \ 1565 range((size_t)os::vm_page_size(), (size_t)max_uintx) \ 1566 \ 1567 product(bool, TraceDynamicGCThreads, false, \ 1568 "Trace the dynamic GC thread usage") \ 1569 \ 1570 develop(bool, ParallelOldGCSplitALot, false, \ 1571 "Provoke splitting (copying data from a young gen space to " \ 1572 "multiple destination spaces)") \ 1573 \ 1574 develop(uintx, ParallelOldGCSplitInterval, 3, \ 1575 "How often to provoke splitting a young gen space") \ 1576 range(0, max_uintx) \ 1577 \ 1578 product(uint, ConcGCThreads, 0, \ 1579 "Number of threads concurrent gc will use") \ 1580 constraint(ConcGCThreadsConstraintFunc,AfterErgo) \ 1581 \ 1582 product(uintx, GCTaskTimeStampEntries, 200, \ 1583 "Number of time stamp entries per gc worker thread") \ 1584 range(1, max_uintx) \ 1585 \ 1586 product(bool, AlwaysTenure, false, \ 1587 "Always tenure objects in eden (ParallelGC only)") \ 1588 \ 1589 product(bool, NeverTenure, false, \ 1590 "Never tenure objects in eden, may tenure on overflow " \ 1591 "(ParallelGC only)") \ 1592 \ 1593 product(bool, ScavengeBeforeFullGC, true, \ 1594 "Scavenge youngest generation before each full GC.") \ 1595 \ 1596 develop(bool, ScavengeWithObjectsInToSpace, false, \ 1597 "Allow scavenges to occur when to-space contains objects") \ 1598 \ 1599 product(bool, UseConcMarkSweepGC, false, \ 1600 "Use Concurrent Mark-Sweep GC in the old generation") \ 1601 \ 1602 product(bool, ExplicitGCInvokesConcurrent, false, \ 1603 "A System.gc() request invokes a concurrent collection; " \ 1604 "(effective only when using concurrent collectors)") \ 1605 \ 1606 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1607 "A System.gc() request invokes a concurrent collection and " \ 1608 "also unloads classes during such a concurrent gc cycle " \ 1609 "(effective only when UseConcMarkSweepGC)") \ 1610 \ 1611 product(bool, GCLockerInvokesConcurrent, false, \ 1612 "The exit of a JNI critical section necessitating a scavenge, " \ 1613 "also kicks off a background concurrent collection") \ 1614 \ 1615 product(uintx, GCLockerEdenExpansionPercent, 5, \ 1616 "How much the GC can expand the eden by while the GC locker " \ 1617 "is active (as a percentage)") \ 1618 range(0, 100) \ 1619 \ 1620 diagnostic(uintx, GCLockerRetryAllocationCount, 2, \ 1621 "Number of times to retry allocations when " \ 1622 "blocked by the GC locker") \ 1623 \ 1624 develop(bool, UseCMSAdaptiveFreeLists, true, \ 1625 "Use adaptive free lists in the CMS generation") \ 1626 \ 1627 develop(bool, UseAsyncConcMarkSweepGC, true, \ 1628 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1629 \ 1630 product(bool, UseCMSBestFit, true, \ 1631 "Use CMS best fit allocation strategy") \ 1632 \ 1633 product(bool, UseParNewGC, false, \ 1634 "Use parallel threads in the new generation") \ 1635 \ 1636 product(bool, PrintTaskqueue, false, \ 1637 "Print taskqueue statistics for parallel collectors") \ 1638 \ 1639 product(bool, PrintTerminationStats, false, \ 1640 "Print termination statistics for parallel collectors") \ 1641 \ 1642 product(uintx, ParallelGCBufferWastePct, 10, \ 1643 "Wasted fraction of parallel allocation buffer") \ 1644 range(0, 100) \ 1645 \ 1646 product(uintx, TargetPLABWastePct, 10, \ 1647 "Target wasted space in last buffer as percent of overall " \ 1648 "allocation") \ 1649 range(1, 100) \ 1650 \ 1651 product(uintx, PLABWeight, 75, \ 1652 "Percentage (0-100) used to weight the current sample when " \ 1653 "computing exponentially decaying average for ResizePLAB") \ 1654 range(0, 100) \ 1655 \ 1656 product(bool, ResizePLAB, true, \ 1657 "Dynamically resize (survivor space) promotion LAB's") \ 1658 \ 1659 product(bool, PrintPLAB, false, \ 1660 "Print (survivor space) promotion LAB's sizing decisions") \ 1661 \ 1662 product(intx, ParGCArrayScanChunk, 50, \ 1663 "Scan a subset of object array and push remainder, if array is " \ 1664 "bigger than this") \ 1665 range(1, max_intx) \ 1666 \ 1667 product(bool, ParGCUseLocalOverflow, false, \ 1668 "Instead of a global overflow list, use local overflow stacks") \ 1669 \ 1670 product(bool, ParGCTrimOverflow, true, \ 1671 "Eagerly trim the local overflow lists " \ 1672 "(when ParGCUseLocalOverflow)") \ 1673 \ 1674 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 1675 "Simulate work queue overflow in ParNew") \ 1676 \ 1677 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1678 "An `interval' counter that determines how frequently " \ 1679 "we simulate overflow; a smaller number increases frequency") \ 1680 \ 1681 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1682 "The desired number of objects to claim from the overflow list") \ 1683 \ 1684 diagnostic(uintx, ParGCStridesPerThread, 2, \ 1685 "The number of strides per worker thread that we divide up the " \ 1686 "card table scanning work into") \ 1687 range(1, max_uintx) \ 1688 constraint(ParGCStridesPerThreadConstraintFunc,AfterErgo) \ 1689 \ 1690 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 1691 "The number of cards in each chunk of the parallel chunks used " \ 1692 "during card table scanning") \ 1693 range(1, max_intx) \ 1694 \ 1695 product(uintx, OldPLABWeight, 50, \ 1696 "Percentage (0-100) used to weight the current sample when " \ 1697 "computing exponentially decaying average for resizing " \ 1698 "OldPLABSize") \ 1699 range(0, 100) \ 1700 \ 1701 product(bool, ResizeOldPLAB, true, \ 1702 "Dynamically resize (old gen) promotion LAB's") \ 1703 \ 1704 product(bool, PrintOldPLAB, false, \ 1705 "Print (old gen) promotion LAB's sizing decisions") \ 1706 \ 1707 product(size_t, CMSOldPLABMax, 1024, \ 1708 "Maximum size of CMS gen promotion LAB caches per worker " \ 1709 "per block size") \ 1710 range(1, max_uintx) \ 1711 constraint(CMSOldPLABMaxConstraintFunc,AfterMemoryInit) \ 1712 \ 1713 product(size_t, CMSOldPLABMin, 16, \ 1714 "Minimum size of CMS gen promotion LAB caches per worker " \ 1715 "per block size") \ 1716 range(1, max_uintx) \ 1717 constraint(CMSOldPLABMinConstraintFunc,AfterMemoryInit) \ 1718 \ 1719 product(uintx, CMSOldPLABNumRefills, 4, \ 1720 "Nominal number of refills of CMS gen promotion LAB cache " \ 1721 "per worker per block size") \ 1722 range(1, max_uintx) \ 1723 \ 1724 product(bool, CMSOldPLABResizeQuicker, false, \ 1725 "React on-the-fly during a scavenge to a sudden " \ 1726 "change in block demand rate") \ 1727 \ 1728 product(uintx, CMSOldPLABToleranceFactor, 4, \ 1729 "The tolerance of the phase-change detector for on-the-fly " \ 1730 "PLAB resizing during a scavenge") \ 1731 range(1, max_uintx) \ 1732 \ 1733 product(uintx, CMSOldPLABReactivityFactor, 2, \ 1734 "The gain in the feedback loop for on-the-fly PLAB resizing " \ 1735 "during a scavenge") \ 1736 \ 1737 product(bool, AlwaysPreTouch, false, \ 1738 "Force all freshly committed pages to be pre-touched") \ 1739 \ 1740 product_pd(size_t, CMSYoungGenPerWorker, \ 1741 "The maximum size of young gen chosen by default per GC worker " \ 1742 "thread available") \ 1743 range(1, max_uintx) \ 1744 \ 1745 product(uintx, CMSIncrementalSafetyFactor, 10, \ 1746 "Percentage (0-100) used to add conservatism when computing the " \ 1747 "duty cycle") \ 1748 range(0, 100) \ 1749 \ 1750 product(uintx, CMSExpAvgFactor, 50, \ 1751 "Percentage (0-100) used to weight the current sample when " \ 1752 "computing exponential averages for CMS statistics") \ 1753 range(0, 100) \ 1754 \ 1755 product(uintx, CMS_FLSWeight, 75, \ 1756 "Percentage (0-100) used to weight the current sample when " \ 1757 "computing exponentially decaying averages for CMS FLS " \ 1758 "statistics") \ 1759 range(0, 100) \ 1760 \ 1761 product(uintx, CMS_FLSPadding, 1, \ 1762 "The multiple of deviation from mean to use for buffering " \ 1763 "against volatility in free list demand") \ 1764 \ 1765 product(uintx, FLSCoalescePolicy, 2, \ 1766 "CMS: aggressiveness level for coalescing, increasing " \ 1767 "from 0 to 4") \ 1768 range(0, 4) \ 1769 \ 1770 product(bool, FLSAlwaysCoalesceLarge, false, \ 1771 "CMS: larger free blocks are always available for coalescing") \ 1772 \ 1773 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 1774 "CMS: the smaller the percentage the greater the coalescing " \ 1775 "force") \ 1776 range(0.0, 1.0) \ 1777 \ 1778 product(double, CMSSmallCoalSurplusPercent, 1.05, \ 1779 "CMS: the factor by which to inflate estimated demand of small " \ 1780 "block sizes to prevent coalescing with an adjoining block") \ 1781 range(0.0, DBL_MAX) \ 1782 \ 1783 product(double, CMSLargeCoalSurplusPercent, 0.95, \ 1784 "CMS: the factor by which to inflate estimated demand of large " \ 1785 "block sizes to prevent coalescing with an adjoining block") \ 1786 range(0.0, DBL_MAX) \ 1787 \ 1788 product(double, CMSSmallSplitSurplusPercent, 1.10, \ 1789 "CMS: the factor by which to inflate estimated demand of small " \ 1790 "block sizes to prevent splitting to supply demand for smaller " \ 1791 "blocks") \ 1792 range(0.0, DBL_MAX) \ 1793 \ 1794 product(double, CMSLargeSplitSurplusPercent, 1.00, \ 1795 "CMS: the factor by which to inflate estimated demand of large " \ 1796 "block sizes to prevent splitting to supply demand for smaller " \ 1797 "blocks") \ 1798 range(0.0, DBL_MAX) \ 1799 \ 1800 product(bool, CMSExtrapolateSweep, false, \ 1801 "CMS: cushion for block demand during sweep") \ 1802 \ 1803 product(uintx, CMS_SweepWeight, 75, \ 1804 "Percentage (0-100) used to weight the current sample when " \ 1805 "computing exponentially decaying average for inter-sweep " \ 1806 "duration") \ 1807 range(0, 100) \ 1808 \ 1809 product(uintx, CMS_SweepPadding, 1, \ 1810 "The multiple of deviation from mean to use for buffering " \ 1811 "against volatility in inter-sweep duration") \ 1812 \ 1813 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1814 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1815 "duration exceeds this threshold in milliseconds") \ 1816 \ 1817 product(bool, CMSClassUnloadingEnabled, true, \ 1818 "Whether class unloading enabled when using CMS GC") \ 1819 \ 1820 product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1821 "When CMS class unloading is enabled, the maximum CMS cycle " \ 1822 "count for which classes may not be unloaded") \ 1823 \ 1824 develop(intx, CMSDictionaryChoice, 0, \ 1825 "Use BinaryTreeDictionary as default in the CMS generation") \ 1826 range(0, 2) \ 1827 \ 1828 product(uintx, CMSIndexedFreeListReplenish, 4, \ 1829 "Replenish an indexed free list with this number of chunks") \ 1830 range(1, max_uintx) \ 1831 \ 1832 product(bool, CMSReplenishIntermediate, true, \ 1833 "Replenish all intermediate free-list caches") \ 1834 \ 1835 product(bool, CMSSplitIndexedFreeListBlocks, true, \ 1836 "When satisfying batched demand, split blocks from the " \ 1837 "IndexedFreeList whose size is a multiple of requested size") \ 1838 \ 1839 product(bool, CMSLoopWarn, false, \ 1840 "Warn in case of excessive CMS looping") \ 1841 \ 1842 develop(bool, CMSOverflowEarlyRestoration, false, \ 1843 "Restore preserved marks early") \ 1844 \ 1845 /* where does the range max value of (max_jint - 1) come from? */ \ 1846 product(size_t, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1847 "Maximum size of marking stack") \ 1848 range(1, (max_jint - 1)) \ 1849 \ 1850 product(size_t, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1851 "Size of marking stack") \ 1852 constraint(MarkStackSizeConstraintFunc,AfterErgo) \ 1853 \ 1854 notproduct(bool, CMSMarkStackOverflowALot, false, \ 1855 "Simulate frequent marking stack / work queue overflow") \ 1856 \ 1857 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1858 "An \"interval\" counter that determines how frequently " \ 1859 "to simulate overflow; a smaller number increases frequency") \ 1860 \ 1861 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1862 "Maximum number of abortable preclean iterations, if > 0") \ 1863 \ 1864 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1865 "Maximum time in abortable preclean (in milliseconds)") \ 1866 range(0, max_intx) \ 1867 \ 1868 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1869 "Nominal minimum work per abortable preclean iteration") \ 1870 \ 1871 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1872 "Time that we sleep between iterations when not given " \ 1873 "enough work per iteration") \ 1874 range(0, max_intx) \ 1875 \ 1876 product(size_t, CMSRescanMultiple, 32, \ 1877 "Size (in cards) of CMS parallel rescan task") \ 1878 range(1, max_uintx) \ 1879 \ 1880 product(size_t, CMSConcMarkMultiple, 32, \ 1881 "Size (in cards) of CMS concurrent MT marking task") \ 1882 range(1, max_uintx) \ 1883 \ 1884 product(bool, CMSAbortSemantics, false, \ 1885 "Whether abort-on-overflow semantics is implemented") \ 1886 \ 1887 product(bool, CMSParallelInitialMarkEnabled, true, \ 1888 "Use the parallel initial mark.") \ 1889 \ 1890 product(bool, CMSParallelRemarkEnabled, true, \ 1891 "Whether parallel remark enabled (only if ParNewGC)") \ 1892 \ 1893 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1894 "Whether parallel remark of survivor space " \ 1895 "enabled (effective only if CMSParallelRemarkEnabled)") \ 1896 \ 1897 product(bool, CMSPLABRecordAlways, true, \ 1898 "Always record survivor space PLAB boundaries (effective only " \ 1899 "if CMSParallelSurvivorRemarkEnabled)") \ 1900 \ 1901 product(bool, CMSEdenChunksRecordAlways, true, \ 1902 "Always record eden chunks used for the parallel initial mark " \ 1903 "or remark of eden") \ 1904 \ 1905 product(bool, CMSPrintEdenSurvivorChunks, false, \ 1906 "Print the eden and the survivor chunks used for the parallel " \ 1907 "initial mark or remark of the eden/survivor spaces") \ 1908 \ 1909 product(bool, CMSConcurrentMTEnabled, true, \ 1910 "Whether multi-threaded concurrent work enabled " \ 1911 "(effective only if ParNewGC)") \ 1912 \ 1913 product(bool, CMSPrecleaningEnabled, true, \ 1914 "Whether concurrent precleaning enabled") \ 1915 \ 1916 product(uintx, CMSPrecleanIter, 3, \ 1917 "Maximum number of precleaning iteration passes") \ 1918 range(0, 9) \ 1919 \ 1920 product(uintx, CMSPrecleanDenominator, 3, \ 1921 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ 1922 "ratio") \ 1923 range(1, max_uintx) \ 1924 constraint(CMSPrecleanDenominatorConstraintFunc,AfterErgo) \ 1925 \ 1926 product(uintx, CMSPrecleanNumerator, 2, \ 1927 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ 1928 "ratio") \ 1929 range(0, max_uintx-1) \ 1930 constraint(CMSPrecleanNumeratorConstraintFunc,AfterErgo) \ 1931 \ 1932 product(bool, CMSPrecleanRefLists1, true, \ 1933 "Preclean ref lists during (initial) preclean phase") \ 1934 \ 1935 product(bool, CMSPrecleanRefLists2, false, \ 1936 "Preclean ref lists during abortable preclean phase") \ 1937 \ 1938 product(bool, CMSPrecleanSurvivors1, false, \ 1939 "Preclean survivors during (initial) preclean phase") \ 1940 \ 1941 product(bool, CMSPrecleanSurvivors2, true, \ 1942 "Preclean survivors during abortable preclean phase") \ 1943 \ 1944 product(uintx, CMSPrecleanThreshold, 1000, \ 1945 "Do not iterate again if number of dirty cards is less than this")\ 1946 range(100, max_uintx) \ 1947 \ 1948 product(bool, CMSCleanOnEnter, true, \ 1949 "Clean-on-enter optimization for reducing number of dirty cards") \ 1950 \ 1951 product(uintx, CMSRemarkVerifyVariant, 1, \ 1952 "Choose variant (1,2) of verification following remark") \ 1953 range(1, 2) \ 1954 \ 1955 product(size_t, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1956 "If Eden size is below this, do not try to schedule remark") \ 1957 \ 1958 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1959 "The Eden occupancy percentage (0-100) at which " \ 1960 "to try and schedule remark pause") \ 1961 range(0, 100) \ 1962 \ 1963 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1964 "Start sampling eden top at least before young gen " \ 1965 "occupancy reaches 1/<ratio> of the size at which " \ 1966 "we plan to schedule remark") \ 1967 range(1, max_uintx) \ 1968 \ 1969 product(uintx, CMSSamplingGrain, 16*K, \ 1970 "The minimum distance between eden samples for CMS (see above)") \ 1971 range(1, max_uintx) \ 1972 \ 1973 product(bool, CMSScavengeBeforeRemark, false, \ 1974 "Attempt scavenge before the CMS remark step") \ 1975 \ 1976 develop(bool, CMSTraceSweeper, false, \ 1977 "Trace some actions of the CMS sweeper") \ 1978 \ 1979 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1980 "Don't drain below this size per parallel worker/thief") \ 1981 range(1, max_juint) \ 1982 constraint(CMSWorkQueueDrainThresholdConstraintFunc,AfterErgo) \ 1983 \ 1984 manageable(intx, CMSWaitDuration, 2000, \ 1985 "Time in milliseconds that CMS thread waits for young GC") \ 1986 \ 1987 develop(uintx, CMSCheckInterval, 1000, \ 1988 "Interval in milliseconds that CMS thread checks if it " \ 1989 "should start a collection cycle") \ 1990 \ 1991 product(bool, CMSYield, true, \ 1992 "Yield between steps of CMS") \ 1993 \ 1994 product(size_t, CMSBitMapYieldQuantum, 10*M, \ 1995 "Bitmap operations should process at most this many bits " \ 1996 "between yields") \ 1997 range(1, max_uintx) \ 1998 \ 1999 product(bool, CMSDumpAtPromotionFailure, false, \ 2000 "Dump useful information about the state of the CMS old " \ 2001 "generation upon a promotion failure") \ 2002 \ 2003 product(bool, CMSPrintChunksInDump, false, \ 2004 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 2005 "more detailed information about the free chunks") \ 2006 \ 2007 product(bool, CMSPrintObjectsInDump, false, \ 2008 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 2009 "more detailed information about the allocated objects") \ 2010 \ 2011 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 2012 "Verify that all references across the FLS boundary " \ 2013 "are to valid objects") \ 2014 \ 2015 diagnostic(bool, FLSVerifyLists, false, \ 2016 "Do lots of (expensive) FreeListSpace verification") \ 2017 \ 2018 diagnostic(bool, FLSVerifyIndexTable, false, \ 2019 "Do lots of (expensive) FLS index table verification") \ 2020 \ 2021 develop(bool, FLSVerifyDictionary, false, \ 2022 "Do lots of (expensive) FLS dictionary verification") \ 2023 \ 2024 develop(bool, VerifyBlockOffsetArray, false, \ 2025 "Do (expensive) block offset array verification") \ 2026 \ 2027 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 2028 "Maintain _unallocated_block in BlockOffsetArray " \ 2029 "(currently applicable only to CMS collector)") \ 2030 \ 2031 develop(bool, TraceCMSState, false, \ 2032 "Trace the state of the CMS collection") \ 2033 \ 2034 product(intx, RefDiscoveryPolicy, 0, \ 2035 "Select type of reference discovery policy: " \ 2036 "reference-based(0) or referent-based(1)") \ 2037 range(ReferenceProcessor::DiscoveryPolicyMin, \ 2038 ReferenceProcessor::DiscoveryPolicyMax) \ 2039 \ 2040 product(bool, ParallelRefProcEnabled, false, \ 2041 "Enable parallel reference processing whenever possible") \ 2042 \ 2043 product(bool, ParallelRefProcBalancingEnabled, true, \ 2044 "Enable balancing of reference processing queues") \ 2045 \ 2046 product(uintx, CMSTriggerRatio, 80, \ 2047 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 2048 "allocated before a CMS collection cycle commences") \ 2049 range(0, 100) \ 2050 \ 2051 product(uintx, CMSBootstrapOccupancy, 50, \ 2052 "Percentage CMS generation occupancy at which to " \ 2053 "initiate CMS collection for bootstrapping collection stats") \ 2054 range(0, 100) \ 2055 \ 2056 product(intx, CMSInitiatingOccupancyFraction, -1, \ 2057 "Percentage CMS generation occupancy to start a CMS collection " \ 2058 "cycle. A negative value means that CMSTriggerRatio is used") \ 2059 range(min_intx, 100) \ 2060 \ 2061 product(uintx, InitiatingHeapOccupancyPercent, 45, \ 2062 "Percentage of the (entire) heap occupancy to start a " \ 2063 "concurrent GC cycle. It is used by GCs that trigger a " \ 2064 "concurrent GC cycle based on the occupancy of the entire heap, " \ 2065 "not just one of the generations (e.g., G1). A value of 0 " \ 2066 "denotes 'do constant GC cycles'.") \ 2067 range(0, 100) \ 2068 \ 2069 manageable(intx, CMSTriggerInterval, -1, \ 2070 "Commence a CMS collection cycle (at least) every so many " \ 2071 "milliseconds (0 permanently, -1 disabled)") \ 2072 range(-1, max_intx) \ 2073 \ 2074 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 2075 "Only use occupancy as a criterion for starting a CMS collection")\ 2076 \ 2077 product(uintx, CMSIsTooFullPercentage, 98, \ 2078 "An absolute ceiling above which CMS will always consider the " \ 2079 "unloading of classes when class unloading is enabled") \ 2080 range(0, 100) \ 2081 \ 2082 develop(bool, CMSTestInFreeList, false, \ 2083 "Check if the coalesced range is already in the " \ 2084 "free lists as claimed") \ 2085 \ 2086 notproduct(bool, CMSVerifyReturnedBytes, false, \ 2087 "Check that all the garbage collected was returned to the " \ 2088 "free lists") \ 2089 \ 2090 notproduct(bool, ScavengeALot, false, \ 2091 "Force scavenge at every Nth exit from the runtime system " \ 2092 "(N=ScavengeALotInterval)") \ 2093 \ 2094 develop(bool, FullGCALot, false, \ 2095 "Force full gc at every Nth exit from the runtime system " \ 2096 "(N=FullGCALotInterval)") \ 2097 \ 2098 notproduct(bool, GCALotAtAllSafepoints, false, \ 2099 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 2100 \ 2101 product(bool, PrintPromotionFailure, false, \ 2102 "Print additional diagnostic information following " \ 2103 "promotion failure") \ 2104 \ 2105 notproduct(bool, PromotionFailureALot, false, \ 2106 "Use promotion failure handling on every youngest generation " \ 2107 "collection") \ 2108 \ 2109 develop(uintx, PromotionFailureALotCount, 1000, \ 2110 "Number of promotion failures occurring at PLAB " \ 2111 "refill attempts (ParNew) or promotion attempts " \ 2112 "(other young collectors)") \ 2113 \ 2114 develop(uintx, PromotionFailureALotInterval, 5, \ 2115 "Total collections between promotion failures a lot") \ 2116 \ 2117 experimental(uintx, WorkStealingSleepMillis, 1, \ 2118 "Sleep time when sleep is used for yields") \ 2119 \ 2120 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 2121 "Number of yields before a sleep is done during work stealing") \ 2122 \ 2123 experimental(uintx, WorkStealingHardSpins, 4096, \ 2124 "Number of iterations in a spin loop between checks on " \ 2125 "time out of hard spin") \ 2126 \ 2127 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 2128 "Ratio of hard spins to calls to yield") \ 2129 \ 2130 develop(uintx, ObjArrayMarkingStride, 512, \ 2131 "Number of object array elements to push onto the marking stack " \ 2132 "before pushing a continuation entry") \ 2133 \ 2134 develop(bool, MetadataAllocationFailALot, false, \ 2135 "Fail metadata allocations at intervals controlled by " \ 2136 "MetadataAllocationFailALotInterval") \ 2137 \ 2138 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 2139 "Metadata allocation failure a lot interval") \ 2140 \ 2141 develop(bool, TraceMetadataChunkAllocation, false, \ 2142 "Trace chunk metadata allocations") \ 2143 \ 2144 product(bool, TraceMetadataHumongousAllocation, false, \ 2145 "Trace humongous metadata allocations") \ 2146 \ 2147 develop(bool, TraceMetavirtualspaceAllocation, false, \ 2148 "Trace virtual space metadata allocations") \ 2149 \ 2150 notproduct(bool, ExecuteInternalVMTests, false, \ 2151 "Enable execution of internal VM tests") \ 2152 \ 2153 notproduct(bool, VerboseInternalVMTests, false, \ 2154 "Turn on logging for internal VM tests.") \ 2155 \ 2156 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 2157 \ 2158 product_pd(bool, ResizeTLAB, \ 2159 "Dynamically resize TLAB size for threads") \ 2160 \ 2161 product(bool, ZeroTLAB, false, \ 2162 "Zero out the newly created TLAB") \ 2163 \ 2164 product(bool, FastTLABRefill, true, \ 2165 "Use fast TLAB refill code") \ 2166 \ 2167 product(bool, PrintTLAB, false, \ 2168 "Print various TLAB related information") \ 2169 \ 2170 product(bool, TLABStats, true, \ 2171 "Provide more detailed and expensive TLAB statistics " \ 2172 "(with PrintTLAB)") \ 2173 \ 2174 product_pd(bool, NeverActAsServerClassMachine, \ 2175 "Never act like a server-class machine") \ 2176 \ 2177 product(bool, AlwaysActAsServerClassMachine, false, \ 2178 "Always act like a server-class machine") \ 2179 \ 2180 product_pd(uint64_t, MaxRAM, \ 2181 "Real memory size (in bytes) used to set maximum heap size") \ 2182 \ 2183 product(size_t, ErgoHeapSizeLimit, 0, \ 2184 "Maximum ergonomically set heap size (in bytes); zero means use " \ 2185 "MaxRAM / MaxRAMFraction") \ 2186 \ 2187 product(uintx, MaxRAMFraction, 4, \ 2188 "Maximum fraction (1/n) of real memory used for maximum heap " \ 2189 "size") \ 2190 range(1, max_uintx) \ 2191 \ 2192 product(uintx, MinRAMFraction, 2, \ 2193 "Minimum fraction (1/n) of real memory used for maximum heap " \ 2194 "size on systems with small physical memory size") \ 2195 range(1, max_uintx) \ 2196 \ 2197 product(uintx, InitialRAMFraction, 64, \ 2198 "Fraction (1/n) of real memory used for initial heap size") \ 2199 range(1, max_uintx) \ 2200 \ 2201 develop(uintx, MaxVirtMemFraction, 2, \ 2202 "Maximum fraction (1/n) of virtual memory used for ergonomically "\ 2203 "determining maximum heap size") \ 2204 \ 2205 product(bool, UseAutoGCSelectPolicy, false, \ 2206 "Use automatic collection selection policy") \ 2207 \ 2208 product(uintx, AutoGCSelectPauseMillis, 5000, \ 2209 "Automatic GC selection pause threshold in milliseconds") \ 2210 \ 2211 product(bool, UseAdaptiveSizePolicy, true, \ 2212 "Use adaptive generation sizing policies") \ 2213 \ 2214 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 2215 "Use adaptive survivor sizing policies") \ 2216 \ 2217 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 2218 "Use adaptive young-old sizing policies at minor collections") \ 2219 \ 2220 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 2221 "Use adaptive young-old sizing policies at major collections") \ 2222 \ 2223 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 2224 "Include statistics from System.gc() for adaptive size policy") \ 2225 \ 2226 product(bool, UseAdaptiveGCBoundary, false, \ 2227 "Allow young-old boundary to move") \ 2228 \ 2229 develop(bool, TraceAdaptiveGCBoundary, false, \ 2230 "Trace young-old boundary moves") \ 2231 \ 2232 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 2233 "Resize the virtual spaces of the young or old generations") \ 2234 range(-1, 1) \ 2235 \ 2236 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 2237 "Policy for changing generation size for throughput goals") \ 2238 range(0, 1) \ 2239 \ 2240 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 2241 "Adjust tenured generation to achieve a minor pause goal") \ 2242 \ 2243 develop(bool, PSAdjustYoungGenForMajorPause, false, \ 2244 "Adjust young generation to achieve a major pause goal") \ 2245 \ 2246 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 2247 "Number of steps where heuristics is used before data is used") \ 2248 \ 2249 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2250 "Number of collections before the adaptive sizing is started") \ 2251 \ 2252 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2253 "Collection interval for printing information; zero means never") \ 2254 \ 2255 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2256 "Use adaptive minimum footprint as a goal") \ 2257 \ 2258 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2259 "Weight given to exponential resizing, between 0 and 100") \ 2260 range(0, 100) \ 2261 \ 2262 product(uintx, AdaptiveTimeWeight, 25, \ 2263 "Weight given to time in adaptive policy, between 0 and 100") \ 2264 range(0, 100) \ 2265 \ 2266 product(uintx, PausePadding, 1, \ 2267 "How much buffer to keep for pause time") \ 2268 \ 2269 product(uintx, PromotedPadding, 3, \ 2270 "How much buffer to keep for promotion failure") \ 2271 \ 2272 product(uintx, SurvivorPadding, 3, \ 2273 "How much buffer to keep for survivor overflow") \ 2274 \ 2275 product(uintx, ThresholdTolerance, 10, \ 2276 "Allowed collection cost difference between generations") \ 2277 range(0, 100) \ 2278 \ 2279 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 2280 "If collection costs are within margin, reduce both by full " \ 2281 "delta") \ 2282 \ 2283 product(uintx, YoungGenerationSizeIncrement, 20, \ 2284 "Adaptive size percentage change in young generation") \ 2285 range(0, 100) \ 2286 \ 2287 product(uintx, YoungGenerationSizeSupplement, 80, \ 2288 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 2289 range(0, 100) \ 2290 \ 2291 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 2292 "Decay factor to YoungedGenerationSizeSupplement") \ 2293 range(1, max_uintx) \ 2294 \ 2295 product(uintx, TenuredGenerationSizeIncrement, 20, \ 2296 "Adaptive size percentage change in tenured generation") \ 2297 range(0, 100) \ 2298 \ 2299 product(uintx, TenuredGenerationSizeSupplement, 80, \ 2300 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 2301 range(0, 100) \ 2302 \ 2303 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 2304 "Decay factor to TenuredGenerationSizeIncrement") \ 2305 range(1, max_uintx) \ 2306 \ 2307 product(uintx, MaxGCPauseMillis, max_uintx, \ 2308 "Adaptive size policy maximum GC pause time goal in millisecond, "\ 2309 "or (G1 Only) the maximum GC time per MMU time slice") \ 2310 range(1, max_uintx) \ 2311 constraint(MaxGCPauseMillisConstraintFunc,AfterMemoryInit) \ 2312 \ 2313 product(uintx, GCPauseIntervalMillis, 0, \ 2314 "Time slice for MMU specification") \ 2315 constraint(GCPauseIntervalMillisConstraintFunc,AfterMemoryInit) \ 2316 \ 2317 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 2318 "Adaptive size policy maximum GC minor pause time goal " \ 2319 "in millisecond") \ 2320 \ 2321 product(uintx, GCTimeRatio, 99, \ 2322 "Adaptive size policy application time to GC time ratio") \ 2323 \ 2324 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 2325 "Adaptive size scale down factor for shrinking") \ 2326 range(1, max_uintx) \ 2327 \ 2328 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 2329 "Adaptive size decays the major cost for long major intervals") \ 2330 \ 2331 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 2332 "Time scale over which major costs decay") \ 2333 \ 2334 product(uintx, MinSurvivorRatio, 3, \ 2335 "Minimum ratio of young generation/survivor space size") \ 2336 range(3, max_uintx) \ 2337 \ 2338 product(uintx, InitialSurvivorRatio, 8, \ 2339 "Initial ratio of young generation/survivor space size") \ 2340 \ 2341 product(size_t, BaseFootPrintEstimate, 256*M, \ 2342 "Estimate of footprint other than Java Heap") \ 2343 \ 2344 product(bool, UseGCOverheadLimit, true, \ 2345 "Use policy to limit of proportion of time spent in GC " \ 2346 "before an OutOfMemory error is thrown") \ 2347 \ 2348 product(uintx, GCTimeLimit, 98, \ 2349 "Limit of the proportion of time spent in GC before " \ 2350 "an OutOfMemoryError is thrown (used with GCHeapFreeLimit)") \ 2351 range(0, 100) \ 2352 \ 2353 product(uintx, GCHeapFreeLimit, 2, \ 2354 "Minimum percentage of free space after a full GC before an " \ 2355 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 2356 range(0, 100) \ 2357 \ 2358 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 2359 "Number of consecutive collections before gc time limit fires") \ 2360 range(1, max_uintx) \ 2361 \ 2362 product(bool, PrintAdaptiveSizePolicy, false, \ 2363 "Print information about AdaptiveSizePolicy") \ 2364 \ 2365 product(intx, PrefetchCopyIntervalInBytes, -1, \ 2366 "How far ahead to prefetch destination area (<= 0 means off)") \ 2367 \ 2368 product(intx, PrefetchScanIntervalInBytes, -1, \ 2369 "How far ahead to prefetch scan area (<= 0 means off)") \ 2370 \ 2371 product(intx, PrefetchFieldsAhead, -1, \ 2372 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 2373 \ 2374 diagnostic(bool, VerifySilently, false, \ 2375 "Do not print the verification progress") \ 2376 \ 2377 diagnostic(bool, VerifyDuringStartup, false, \ 2378 "Verify memory system before executing any Java code " \ 2379 "during VM initialization") \ 2380 \ 2381 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 2382 "Verify system before exiting") \ 2383 \ 2384 diagnostic(bool, VerifyBeforeGC, false, \ 2385 "Verify memory system before GC") \ 2386 \ 2387 diagnostic(bool, VerifyAfterGC, false, \ 2388 "Verify memory system after GC") \ 2389 \ 2390 diagnostic(bool, VerifyDuringGC, false, \ 2391 "Verify memory system during GC (between phases)") \ 2392 \ 2393 diagnostic(bool, GCParallelVerificationEnabled, true, \ 2394 "Enable parallel memory system verification") \ 2395 \ 2396 diagnostic(bool, DeferInitialCardMark, false, \ 2397 "When +ReduceInitialCardMarks, explicitly defer any that " \ 2398 "may arise from new_pre_store_barrier") \ 2399 \ 2400 product(bool, UseCondCardMark, false, \ 2401 "Check for already marked card before updating card table") \ 2402 \ 2403 diagnostic(bool, VerifyRememberedSets, false, \ 2404 "Verify GC remembered sets") \ 2405 \ 2406 diagnostic(bool, VerifyObjectStartArray, true, \ 2407 "Verify GC object start array if verify before/after") \ 2408 \ 2409 product(bool, DisableExplicitGC, false, \ 2410 "Ignore calls to System.gc()") \ 2411 \ 2412 notproduct(bool, CheckMemoryInitialization, false, \ 2413 "Check memory initialization") \ 2414 \ 2415 diagnostic(bool, BindCMSThreadToCPU, false, \ 2416 "Bind CMS Thread to CPU if possible") \ 2417 \ 2418 diagnostic(uintx, CPUForCMSThread, 0, \ 2419 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 2420 \ 2421 product(bool, BindGCTaskThreadsToCPUs, false, \ 2422 "Bind GCTaskThreads to CPUs if possible") \ 2423 \ 2424 product(bool, UseGCTaskAffinity, false, \ 2425 "Use worker affinity when asking for GCTasks") \ 2426 \ 2427 product(uintx, ProcessDistributionStride, 4, \ 2428 "Stride through processors when distributing processes") \ 2429 \ 2430 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 2431 "Number of times the coordinator GC thread will sleep while " \ 2432 "yielding before giving up and resuming GC") \ 2433 \ 2434 product(uintx, CMSYieldSleepCount, 0, \ 2435 "Number of times a GC thread (minus the coordinator) " \ 2436 "will sleep while yielding before giving up and resuming GC") \ 2437 \ 2438 /* gc tracing */ \ 2439 manageable(bool, PrintGC, false, \ 2440 "Print message at garbage collection") \ 2441 \ 2442 manageable(bool, PrintGCDetails, false, \ 2443 "Print more details at garbage collection") \ 2444 \ 2445 manageable(bool, PrintGCDateStamps, false, \ 2446 "Print date stamps at garbage collection") \ 2447 \ 2448 manageable(bool, PrintGCTimeStamps, false, \ 2449 "Print timestamps at garbage collection") \ 2450 \ 2451 manageable(bool, PrintGCID, true, \ 2452 "Print an identifier for each garbage collection") \ 2453 \ 2454 product(bool, PrintGCTaskTimeStamps, false, \ 2455 "Print timestamps for individual gc worker thread tasks") \ 2456 \ 2457 develop(intx, ConcGCYieldTimeout, 0, \ 2458 "If non-zero, assert that GC threads yield within this " \ 2459 "number of milliseconds") \ 2460 range(0, max_intx) \ 2461 \ 2462 product(bool, PrintReferenceGC, false, \ 2463 "Print times spent handling reference objects during GC " \ 2464 "(enabled only when PrintGCDetails)") \ 2465 \ 2466 develop(bool, TraceReferenceGC, false, \ 2467 "Trace handling of soft/weak/final/phantom references") \ 2468 \ 2469 develop(bool, TraceFinalizerRegistration, false, \ 2470 "Trace registration of final references") \ 2471 \ 2472 notproduct(bool, TraceScavenge, false, \ 2473 "Trace scavenge") \ 2474 \ 2475 product(bool, IgnoreEmptyClassPaths, false, \ 2476 "Ignore empty path elements in -classpath") \ 2477 \ 2478 product(bool, TraceClassPaths, false, \ 2479 "Trace processing of class paths") \ 2480 \ 2481 product_rw(bool, TraceClassLoading, false, \ 2482 "Trace all classes loaded") \ 2483 \ 2484 product(bool, TraceClassLoadingPreorder, false, \ 2485 "Trace all classes loaded in order referenced (not loaded)") \ 2486 \ 2487 product_rw(bool, TraceClassUnloading, false, \ 2488 "Trace unloading of classes") \ 2489 \ 2490 product_rw(bool, TraceLoaderConstraints, false, \ 2491 "Trace loader constraints") \ 2492 \ 2493 develop(bool, TraceClassLoaderData, false, \ 2494 "Trace class loader loader_data lifetime") \ 2495 \ 2496 product(size_t, InitialBootClassLoaderMetaspaceSize, \ 2497 NOT_LP64(2200*K) LP64_ONLY(4*M), \ 2498 "Initial size of the boot class loader data metaspace") \ 2499 range(30*K, max_uintx/BytesPerWord) \ 2500 constraint(InitialBootClassLoaderMetaspaceSizeConstraintFunc, AfterErgo)\ 2501 \ 2502 product(bool, TraceYoungGenTime, false, \ 2503 "Trace accumulated time for young collection") \ 2504 \ 2505 product(bool, TraceOldGenTime, false, \ 2506 "Trace accumulated time for old collection") \ 2507 \ 2508 product(bool, PrintTenuringDistribution, false, \ 2509 "Print tenuring age information") \ 2510 \ 2511 product_rw(bool, PrintHeapAtGC, false, \ 2512 "Print heap layout before and after each GC") \ 2513 \ 2514 product_rw(bool, PrintHeapAtGCExtended, false, \ 2515 "Print extended information about the layout of the heap " \ 2516 "when -XX:+PrintHeapAtGC is set") \ 2517 \ 2518 product(bool, PrintHeapAtSIGBREAK, true, \ 2519 "Print heap layout in response to SIGBREAK") \ 2520 \ 2521 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 2522 "Print a class histogram before any major stop-world GC") \ 2523 \ 2524 manageable(bool, PrintClassHistogramAfterFullGC, false, \ 2525 "Print a class histogram after any major stop-world GC") \ 2526 \ 2527 manageable(bool, PrintClassHistogram, false, \ 2528 "Print a histogram of class instances") \ 2529 \ 2530 develop(bool, TraceWorkGang, false, \ 2531 "Trace activities of work gangs") \ 2532 \ 2533 product(bool, TraceParallelOldGCTasks, false, \ 2534 "Trace multithreaded GC activity") \ 2535 \ 2536 develop(bool, TraceBlockOffsetTable, false, \ 2537 "Print BlockOffsetTable maps") \ 2538 \ 2539 develop(bool, TraceCardTableModRefBS, false, \ 2540 "Print CardTableModRefBS maps") \ 2541 \ 2542 develop(bool, TraceGCTaskManager, false, \ 2543 "Trace actions of the GC task manager") \ 2544 \ 2545 develop(bool, TraceGCTaskQueue, false, \ 2546 "Trace actions of the GC task queues") \ 2547 \ 2548 diagnostic(bool, TraceGCTaskThread, false, \ 2549 "Trace actions of the GC task threads") \ 2550 \ 2551 product(bool, PrintParallelOldGCPhaseTimes, false, \ 2552 "Print the time taken by each phase in ParallelOldGC " \ 2553 "(PrintGCDetails must also be enabled)") \ 2554 \ 2555 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2556 "Trace marking phase in ParallelOldGC") \ 2557 \ 2558 develop(bool, TraceParallelOldGCSummaryPhase, false, \ 2559 "Trace summary phase in ParallelOldGC") \ 2560 \ 2561 develop(bool, TraceParallelOldGCCompactionPhase, false, \ 2562 "Trace compaction phase in ParallelOldGC") \ 2563 \ 2564 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2565 "Trace dense prefix computation for ParallelOldGC") \ 2566 \ 2567 develop(bool, IgnoreLibthreadGPFault, false, \ 2568 "Suppress workaround for libthread GP fault") \ 2569 \ 2570 product(bool, PrintJNIGCStalls, false, \ 2571 "Print diagnostic message when GC is stalled " \ 2572 "by JNI critical section") \ 2573 \ 2574 experimental(double, ObjectCountCutOffPercent, 0.5, \ 2575 "The percentage of the used heap that the instances of a class " \ 2576 "must occupy for the class to generate a trace event") \ 2577 range(0.0, 100.0) \ 2578 \ 2579 /* GC log rotation setting */ \ 2580 \ 2581 product(bool, UseGCLogFileRotation, false, \ 2582 "Rotate gclog files (for long running applications). It requires "\ 2583 "-Xloggc:<filename>") \ 2584 \ 2585 product(uintx, NumberOfGCLogFiles, 0, \ 2586 "Number of gclog files in rotation " \ 2587 "(default: 0, no rotation)") \ 2588 \ 2589 product(size_t, GCLogFileSize, 8*K, \ 2590 "GC log file size, requires UseGCLogFileRotation. " \ 2591 "Set to 0 to only trigger rotation via jcmd") \ 2592 \ 2593 /* JVMTI heap profiling */ \ 2594 \ 2595 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2596 "Trace JVMTI object tagging calls") \ 2597 \ 2598 diagnostic(bool, VerifyBeforeIteration, false, \ 2599 "Verify memory system before JVMTI iteration") \ 2600 \ 2601 /* compiler interface */ \ 2602 \ 2603 develop(bool, CIPrintCompilerName, false, \ 2604 "when CIPrint is active, print the name of the active compiler") \ 2605 \ 2606 diagnostic(bool, CIPrintCompileQueue, false, \ 2607 "display the contents of the compile queue whenever a " \ 2608 "compilation is enqueued") \ 2609 \ 2610 develop(bool, CIPrintRequests, false, \ 2611 "display every request for compilation") \ 2612 \ 2613 product(bool, CITime, false, \ 2614 "collect timing information for compilation") \ 2615 \ 2616 develop(bool, CITimeVerbose, false, \ 2617 "be more verbose in compilation timings") \ 2618 \ 2619 develop(bool, CITimeEach, false, \ 2620 "display timing information after each successful compilation") \ 2621 \ 2622 develop(bool, CICountOSR, false, \ 2623 "use a separate counter when assigning ids to osr compilations") \ 2624 \ 2625 develop(bool, CICompileNatives, true, \ 2626 "compile native methods if supported by the compiler") \ 2627 \ 2628 develop_pd(bool, CICompileOSR, \ 2629 "compile on stack replacement methods if supported by the " \ 2630 "compiler") \ 2631 \ 2632 develop(bool, CIPrintMethodCodes, false, \ 2633 "print method bytecodes of the compiled code") \ 2634 \ 2635 develop(bool, CIPrintTypeFlow, false, \ 2636 "print the results of ciTypeFlow analysis") \ 2637 \ 2638 develop(bool, CITraceTypeFlow, false, \ 2639 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2640 \ 2641 develop(intx, OSROnlyBCI, -1, \ 2642 "OSR only at this bci. Negative values mean exclude that bci") \ 2643 \ 2644 /* compiler */ \ 2645 \ 2646 /* notice: the max range value here is max_jint, not max_intx */ \ 2647 /* because of overflow issue */ \ 2648 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2649 "Number of compiler threads to run") \ 2650 range(0, max_jint) \ 2651 constraint(CICompilerCountConstraintFunc, AtParse) \ 2652 \ 2653 product(intx, CompilationPolicyChoice, 0, \ 2654 "which compilation policy (0-3)") \ 2655 range(0, 3) \ 2656 \ 2657 develop(bool, UseStackBanging, true, \ 2658 "use stack banging for stack overflow checks (required for " \ 2659 "proper StackOverflow handling; disable only to measure cost " \ 2660 "of stackbanging)") \ 2661 \ 2662 develop(bool, UseStrictFP, true, \ 2663 "use strict fp if modifier strictfp is set") \ 2664 \ 2665 develop(bool, GenerateSynchronizationCode, true, \ 2666 "generate locking/unlocking code for synchronized methods and " \ 2667 "monitors") \ 2668 \ 2669 develop(bool, GenerateCompilerNullChecks, true, \ 2670 "Generate explicit null checks for loads/stores/calls") \ 2671 \ 2672 develop(bool, GenerateRangeChecks, true, \ 2673 "Generate range checks for array accesses") \ 2674 \ 2675 develop_pd(bool, ImplicitNullChecks, \ 2676 "Generate code for implicit null checks") \ 2677 \ 2678 product_pd(bool, TrapBasedNullChecks, \ 2679 "Generate code for null checks that uses a cmp and trap " \ 2680 "instruction raising SIGTRAP. This is only used if an access to" \ 2681 "null (+offset) will not raise a SIGSEGV, i.e.," \ 2682 "ImplicitNullChecks don't work (PPC64).") \ 2683 \ 2684 product(bool, PrintSafepointStatistics, false, \ 2685 "Print statistics about safepoint synchronization") \ 2686 \ 2687 product(intx, PrintSafepointStatisticsCount, 300, \ 2688 "Total number of safepoint statistics collected " \ 2689 "before printing them out") \ 2690 \ 2691 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2692 "Print safepoint statistics only when safepoint takes " \ 2693 "more than PrintSafepointSatisticsTimeout in millis") \ 2694 \ 2695 product(bool, TraceSafepointCleanupTime, false, \ 2696 "Print the break down of clean up tasks performed during " \ 2697 "safepoint") \ 2698 \ 2699 product(bool, Inline, true, \ 2700 "Enable inlining") \ 2701 \ 2702 product(bool, ClipInlining, true, \ 2703 "Clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2704 \ 2705 develop(bool, UseCHA, true, \ 2706 "Enable CHA") \ 2707 \ 2708 product(bool, UseTypeProfile, true, \ 2709 "Check interpreter profile for historically monomorphic calls") \ 2710 \ 2711 diagnostic(bool, PrintInlining, false, \ 2712 "Print inlining optimizations") \ 2713 \ 2714 product(bool, UsePopCountInstruction, false, \ 2715 "Use population count instruction") \ 2716 \ 2717 develop(bool, EagerInitialization, false, \ 2718 "Eagerly initialize classes if possible") \ 2719 \ 2720 diagnostic(bool, LogTouchedMethods, false, \ 2721 "Log methods which have been ever touched in runtime") \ 2722 \ 2723 diagnostic(bool, PrintTouchedMethodsAtExit, false, \ 2724 "Print all methods that have been ever touched in runtime") \ 2725 \ 2726 develop(bool, TraceMethodReplacement, false, \ 2727 "Print when methods are replaced do to recompilation") \ 2728 \ 2729 develop(bool, PrintMethodFlushing, false, \ 2730 "Print the nmethods being flushed") \ 2731 \ 2732 diagnostic(bool, PrintMethodFlushingStatistics, false, \ 2733 "print statistics about method flushing") \ 2734 \ 2735 diagnostic(intx, HotMethodDetectionLimit, 100000, \ 2736 "Number of compiled code invocations after which " \ 2737 "the method is considered as hot by the flusher") \ 2738 range(1, max_jint) \ 2739 \ 2740 diagnostic(intx, MinPassesBeforeFlush, 10, \ 2741 "Minimum number of sweeper passes before an nmethod " \ 2742 "can be flushed") \ 2743 \ 2744 product(bool, UseCodeAging, true, \ 2745 "Insert counter to detect warm methods") \ 2746 \ 2747 diagnostic(bool, StressCodeAging, false, \ 2748 "Start with counters compiled in") \ 2749 \ 2750 develop(bool, UseRelocIndex, false, \ 2751 "Use an index to speed random access to relocations") \ 2752 \ 2753 develop(bool, StressCodeBuffers, false, \ 2754 "Exercise code buffer expansion and other rare state changes") \ 2755 \ 2756 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2757 "Generate extra debugging information for non-safepoints in " \ 2758 "nmethods") \ 2759 \ 2760 product(bool, PrintVMOptions, false, \ 2761 "Print flags that appeared on the command line") \ 2762 \ 2763 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2764 "Ignore unrecognized VM options") \ 2765 \ 2766 product(bool, PrintCommandLineFlags, false, \ 2767 "Print flags specified on command line or set by ergonomics") \ 2768 \ 2769 product(bool, PrintFlagsInitial, false, \ 2770 "Print all VM flags before argument processing and exit VM") \ 2771 \ 2772 product(bool, PrintFlagsFinal, false, \ 2773 "Print all VM flags after argument and ergonomic processing") \ 2774 \ 2775 notproduct(bool, PrintFlagsWithComments, false, \ 2776 "Print all VM flags with default values and descriptions and " \ 2777 "exit") \ 2778 \ 2779 product(bool, PrintFlagsRanges, false, \ 2780 "Print VM flags and their ranges and exit VM") \ 2781 \ 2782 diagnostic(bool, SerializeVMOutput, true, \ 2783 "Use a mutex to serialize output to tty and LogFile") \ 2784 \ 2785 diagnostic(bool, DisplayVMOutput, true, \ 2786 "Display all VM output on the tty, independently of LogVMOutput") \ 2787 \ 2788 diagnostic(bool, LogVMOutput, false, \ 2789 "Save VM output to LogFile") \ 2790 \ 2791 diagnostic(ccstr, LogFile, NULL, \ 2792 "If LogVMOutput or LogCompilation is on, save VM output to " \ 2793 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\ 2794 \ 2795 product(ccstr, ErrorFile, NULL, \ 2796 "If an error occurs, save the error data to this file " \ 2797 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2798 \ 2799 product(bool, DisplayVMOutputToStderr, false, \ 2800 "If DisplayVMOutput is true, display all VM output to stderr") \ 2801 \ 2802 product(bool, DisplayVMOutputToStdout, false, \ 2803 "If DisplayVMOutput is true, display all VM output to stdout") \ 2804 \ 2805 product(bool, UseHeavyMonitors, false, \ 2806 "use heavyweight instead of lightweight Java monitors") \ 2807 \ 2808 product(bool, PrintStringTableStatistics, false, \ 2809 "print statistics about the StringTable and SymbolTable") \ 2810 \ 2811 diagnostic(bool, VerifyStringTableAtExit, false, \ 2812 "verify StringTable contents at exit") \ 2813 \ 2814 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2815 "print histogram of the symbol table") \ 2816 \ 2817 notproduct(bool, ExitVMOnVerifyError, false, \ 2818 "standard exit from VM if bytecode verify error " \ 2819 "(only in debug mode)") \ 2820 \ 2821 notproduct(ccstr, AbortVMOnException, NULL, \ 2822 "Call fatal if this exception is thrown. Example: " \ 2823 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2824 \ 2825 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ 2826 "Call fatal if the exception pointed by AbortVMOnException " \ 2827 "has this message") \ 2828 \ 2829 develop(bool, DebugVtables, false, \ 2830 "add debugging code to vtable dispatch") \ 2831 \ 2832 develop(bool, PrintVtables, false, \ 2833 "print vtables when printing klass") \ 2834 \ 2835 notproduct(bool, PrintVtableStats, false, \ 2836 "print vtables stats at end of run") \ 2837 \ 2838 develop(bool, TraceCreateZombies, false, \ 2839 "trace creation of zombie nmethods") \ 2840 \ 2841 notproduct(bool, IgnoreLockingAssertions, false, \ 2842 "disable locking assertions (for speed)") \ 2843 \ 2844 product(bool, RangeCheckElimination, true, \ 2845 "Eliminate range checks") \ 2846 \ 2847 develop_pd(bool, UncommonNullCast, \ 2848 "track occurrences of null in casts; adjust compiler tactics") \ 2849 \ 2850 develop(bool, TypeProfileCasts, true, \ 2851 "treat casts like calls for purposes of type profiling") \ 2852 \ 2853 develop(bool, DelayCompilationDuringStartup, true, \ 2854 "Delay invoking the compiler until main application class is " \ 2855 "loaded") \ 2856 \ 2857 develop(bool, CompileTheWorld, false, \ 2858 "Compile all methods in all classes in bootstrap class path " \ 2859 "(stress test)") \ 2860 \ 2861 develop(bool, CompileTheWorldPreloadClasses, true, \ 2862 "Preload all classes used by a class before start loading") \ 2863 \ 2864 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 2865 "Force a safepoint every n compiles so sweeper can keep up") \ 2866 \ 2867 develop(bool, FillDelaySlots, true, \ 2868 "Fill delay slots (on SPARC only)") \ 2869 \ 2870 develop(bool, TimeLivenessAnalysis, false, \ 2871 "Time computation of bytecode liveness analysis") \ 2872 \ 2873 develop(bool, TraceLivenessGen, false, \ 2874 "Trace the generation of liveness analysis information") \ 2875 \ 2876 notproduct(bool, TraceLivenessQuery, false, \ 2877 "Trace queries of liveness analysis information") \ 2878 \ 2879 notproduct(bool, CollectIndexSetStatistics, false, \ 2880 "Collect information about IndexSets") \ 2881 \ 2882 develop(bool, UseLoopSafepoints, true, \ 2883 "Generate Safepoint nodes in every loop") \ 2884 \ 2885 develop(intx, FastAllocateSizeLimit, 128*K, \ 2886 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2887 "Inline allocations larger than this in doublewords must go slow")\ 2888 \ 2889 product(bool, AggressiveOpts, false, \ 2890 "Enable aggressive optimizations - see arguments.cpp") \ 2891 \ 2892 product_pd(uintx, TypeProfileLevel, \ 2893 "=XYZ, with Z: Type profiling of arguments at call; " \ 2894 "Y: Type profiling of return value at call; " \ 2895 "X: Type profiling of parameters to methods; " \ 2896 "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \ 2897 constraint(TypeProfileLevelConstraintFunc, AfterErgo) \ 2898 \ 2899 product(intx, TypeProfileArgsLimit, 2, \ 2900 "max number of call arguments to consider for type profiling") \ 2901 range(0, 16) \ 2902 \ 2903 product(intx, TypeProfileParmsLimit, 2, \ 2904 "max number of incoming parameters to consider for type profiling"\ 2905 ", -1 for all") \ 2906 range(-1, 64) \ 2907 \ 2908 /* statistics */ \ 2909 develop(bool, CountCompiledCalls, false, \ 2910 "Count method invocations") \ 2911 \ 2912 notproduct(bool, CountRuntimeCalls, false, \ 2913 "Count VM runtime calls") \ 2914 \ 2915 develop(bool, CountJNICalls, false, \ 2916 "Count jni method invocations") \ 2917 \ 2918 notproduct(bool, CountJVMCalls, false, \ 2919 "Count jvm method invocations") \ 2920 \ 2921 notproduct(bool, CountRemovableExceptions, false, \ 2922 "Count exceptions that could be replaced by branches due to " \ 2923 "inlining") \ 2924 \ 2925 notproduct(bool, ICMissHistogram, false, \ 2926 "Produce histogram of IC misses") \ 2927 \ 2928 /* interpreter */ \ 2929 develop(bool, ClearInterpreterLocals, false, \ 2930 "Always clear local variables of interpreter activations upon " \ 2931 "entry") \ 2932 \ 2933 product_pd(bool, RewriteBytecodes, \ 2934 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2935 \ 2936 product_pd(bool, RewriteFrequentPairs, \ 2937 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2938 \ 2939 diagnostic(bool, PrintInterpreter, false, \ 2940 "Print the generated interpreter code") \ 2941 \ 2942 product(bool, UseInterpreter, true, \ 2943 "Use interpreter for non-compiled methods") \ 2944 \ 2945 develop(bool, UseFastSignatureHandlers, true, \ 2946 "Use fast signature handlers for native calls") \ 2947 \ 2948 product(bool, UseLoopCounter, true, \ 2949 "Increment invocation counter on backward branch") \ 2950 \ 2951 product_pd(bool, UseOnStackReplacement, \ 2952 "Use on stack replacement, calls runtime if invoc. counter " \ 2953 "overflows in loop") \ 2954 \ 2955 notproduct(bool, TraceOnStackReplacement, false, \ 2956 "Trace on stack replacement") \ 2957 \ 2958 product_pd(bool, PreferInterpreterNativeStubs, \ 2959 "Use always interpreter stubs for native methods invoked via " \ 2960 "interpreter") \ 2961 \ 2962 develop(bool, CountBytecodes, false, \ 2963 "Count number of bytecodes executed") \ 2964 \ 2965 develop(bool, PrintBytecodeHistogram, false, \ 2966 "Print histogram of the executed bytecodes") \ 2967 \ 2968 develop(bool, PrintBytecodePairHistogram, false, \ 2969 "Print histogram of the executed bytecode pairs") \ 2970 \ 2971 diagnostic(bool, PrintSignatureHandlers, false, \ 2972 "Print code generated for native method signature handlers") \ 2973 \ 2974 develop(bool, VerifyOops, false, \ 2975 "Do plausibility checks for oops") \ 2976 \ 2977 develop(bool, CheckUnhandledOops, false, \ 2978 "Check for unhandled oops in VM code") \ 2979 \ 2980 develop(bool, VerifyJNIFields, trueInDebug, \ 2981 "Verify jfieldIDs for instance fields") \ 2982 \ 2983 notproduct(bool, VerifyJNIEnvThread, false, \ 2984 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2985 "from JNI") \ 2986 \ 2987 develop(bool, VerifyFPU, false, \ 2988 "Verify FPU state (check for NaN's, etc.)") \ 2989 \ 2990 develop(bool, VerifyThread, false, \ 2991 "Watch the thread register for corruption (SPARC only)") \ 2992 \ 2993 develop(bool, VerifyActivationFrameSize, false, \ 2994 "Verify that activation frame didn't become smaller than its " \ 2995 "minimal size") \ 2996 \ 2997 develop(bool, TraceFrequencyInlining, false, \ 2998 "Trace frequency based inlining") \ 2999 \ 3000 develop_pd(bool, InlineIntrinsics, \ 3001 "Inline intrinsics that can be statically resolved") \ 3002 \ 3003 product_pd(bool, ProfileInterpreter, \ 3004 "Profile at the bytecode level during interpretation") \ 3005 \ 3006 develop(bool, TraceProfileInterpreter, false, \ 3007 "Trace profiling at the bytecode level during interpretation. " \ 3008 "This outputs the profiling information collected to improve " \ 3009 "jit compilation.") \ 3010 \ 3011 develop_pd(bool, ProfileTraps, \ 3012 "Profile deoptimization traps at the bytecode level") \ 3013 \ 3014 product(intx, ProfileMaturityPercentage, 20, \ 3015 "number of method invocations/branches (expressed as % of " \ 3016 "CompileThreshold) before using the method's profile") \ 3017 range(0, 100) \ 3018 \ 3019 diagnostic(bool, PrintMethodData, false, \ 3020 "Print the results of +ProfileInterpreter at end of run") \ 3021 \ 3022 develop(bool, VerifyDataPointer, trueInDebug, \ 3023 "Verify the method data pointer during interpreter profiling") \ 3024 \ 3025 develop(bool, VerifyCompiledCode, false, \ 3026 "Include miscellaneous runtime verifications in nmethod code; " \ 3027 "default off because it disturbs nmethod size heuristics") \ 3028 \ 3029 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 3030 "Manually make GC thread crash then dump java stack trace; " \ 3031 "Test only") \ 3032 \ 3033 /* compilation */ \ 3034 product(bool, UseCompiler, true, \ 3035 "Use Just-In-Time compilation") \ 3036 \ 3037 develop(bool, TraceCompilationPolicy, false, \ 3038 "Trace compilation policy") \ 3039 \ 3040 develop(bool, TimeCompilationPolicy, false, \ 3041 "Time the compilation policy") \ 3042 \ 3043 product(bool, UseCounterDecay, true, \ 3044 "Adjust recompilation counters") \ 3045 \ 3046 develop(intx, CounterHalfLifeTime, 30, \ 3047 "Half-life time of invocation counters (in seconds)") \ 3048 \ 3049 develop(intx, CounterDecayMinIntervalLength, 500, \ 3050 "The minimum interval (in milliseconds) between invocation of " \ 3051 "CounterDecay") \ 3052 \ 3053 product(bool, AlwaysCompileLoopMethods, false, \ 3054 "When using recompilation, never interpret methods " \ 3055 "containing loops") \ 3056 \ 3057 product(bool, DontCompileHugeMethods, true, \ 3058 "Do not compile methods > HugeMethodLimit") \ 3059 \ 3060 /* Bytecode escape analysis estimation. */ \ 3061 product(bool, EstimateArgEscape, true, \ 3062 "Analyze bytecodes to estimate escape state of arguments") \ 3063 \ 3064 product(intx, BCEATraceLevel, 0, \ 3065 "How much tracing to do of bytecode escape analysis estimates " \ 3066 "(0-3)") \ 3067 range(0, 3) \ 3068 \ 3069 product(intx, MaxBCEAEstimateLevel, 5, \ 3070 "Maximum number of nested calls that are analyzed by BC EA") \ 3071 range(0, max_jint) \ 3072 \ 3073 product(intx, MaxBCEAEstimateSize, 150, \ 3074 "Maximum bytecode size of a method to be analyzed by BC EA") \ 3075 range(0, max_jint) \ 3076 \ 3077 product(intx, AllocatePrefetchStyle, 1, \ 3078 "0 = no prefetch, " \ 3079 "1 = prefetch instructions for each allocation, " \ 3080 "2 = use TLAB watermark to gate allocation prefetch, " \ 3081 "3 = use BIS instruction on Sparc for allocation prefetch") \ 3082 range(0, 3) \ 3083 \ 3084 product(intx, AllocatePrefetchDistance, -1, \ 3085 "Distance to prefetch ahead of allocation pointer. " \ 3086 "-1: use system-specific value (automatically determined") \ 3087 constraint(AllocatePrefetchDistanceConstraintFunc, AfterMemoryInit)\ 3088 \ 3089 product(intx, AllocatePrefetchLines, 3, \ 3090 "Number of lines to prefetch ahead of array allocation pointer") \ 3091 range(1, max_jint / 2) \ 3092 \ 3093 product(intx, AllocateInstancePrefetchLines, 1, \ 3094 "Number of lines to prefetch ahead of instance allocation " \ 3095 "pointer") \ 3096 range(1, max_jint / 2) \ 3097 \ 3098 product(intx, AllocatePrefetchStepSize, 16, \ 3099 "Step size in bytes of sequential prefetch instructions") \ 3100 constraint(AllocatePrefetchStepSizeConstraintFunc,AfterMemoryInit)\ 3101 \ 3102 product(intx, AllocatePrefetchInstr, 0, \ 3103 "Prefetch instruction to prefetch ahead of allocation pointer") \ 3104 constraint(AllocatePrefetchInstrConstraintFunc, AfterErgo) \ 3105 \ 3106 /* deoptimization */ \ 3107 develop(bool, TraceDeoptimization, false, \ 3108 "Trace deoptimization") \ 3109 \ 3110 develop(bool, PrintDeoptimizationDetails, false, \ 3111 "Print more information about deoptimization") \ 3112 \ 3113 develop(bool, DebugDeoptimization, false, \ 3114 "Tracing various information while debugging deoptimization") \ 3115 \ 3116 product(intx, SelfDestructTimer, 0, \ 3117 "Will cause VM to terminate after a given time (in minutes) " \ 3118 "(0 means off)") \ 3119 \ 3120 product(intx, MaxJavaStackTraceDepth, 1024, \ 3121 "The maximum number of lines in the stack trace for Java " \ 3122 "exceptions (0 means all)") \ 3123 \ 3124 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 3125 "Guarantee a safepoint (at least) every so many milliseconds " \ 3126 "(0 means none)")) \ 3127 \ 3128 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ 3129 "Guarantee a safepoint (at least) every so many milliseconds " \ 3130 "(0 means none)")) \ 3131 \ 3132 product(intx, SafepointTimeoutDelay, 10000, \ 3133 "Delay in milliseconds for option SafepointTimeout") \ 3134 \ 3135 product(intx, NmethodSweepActivity, 10, \ 3136 "Removes cold nmethods from code cache if > 0. Higher values " \ 3137 "result in more aggressive sweeping") \ 3138 range(0, 2000) \ 3139 \ 3140 notproduct(bool, LogSweeper, false, \ 3141 "Keep a ring buffer of sweeper activity") \ 3142 \ 3143 notproduct(intx, SweeperLogEntries, 1024, \ 3144 "Number of records in the ring buffer of sweeper activity") \ 3145 \ 3146 notproduct(intx, MemProfilingInterval, 500, \ 3147 "Time between each invocation of the MemProfiler") \ 3148 \ 3149 develop(intx, MallocCatchPtr, -1, \ 3150 "Hit breakpoint when mallocing/freeing this pointer") \ 3151 \ 3152 notproduct(ccstrlist, SuppressErrorAt, "", \ 3153 "List of assertions (file:line) to muzzle") \ 3154 \ 3155 notproduct(size_t, HandleAllocationLimit, 1024, \ 3156 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 3157 "is used") \ 3158 \ 3159 develop(size_t, TotalHandleAllocationLimit, 1024, \ 3160 "Threshold for total handle allocation when " \ 3161 "+TraceHandleAllocation is used") \ 3162 \ 3163 develop(intx, StackPrintLimit, 100, \ 3164 "number of stack frames to print in VM-level stack dump") \ 3165 \ 3166 notproduct(intx, MaxElementPrintSize, 256, \ 3167 "maximum number of elements to print") \ 3168 \ 3169 notproduct(intx, MaxSubklassPrintSize, 4, \ 3170 "maximum number of subklasses to print when printing klass") \ 3171 \ 3172 product(intx, MaxInlineLevel, 9, \ 3173 "maximum number of nested calls that are inlined") \ 3174 range(0, max_jint) \ 3175 \ 3176 product(intx, MaxRecursiveInlineLevel, 1, \ 3177 "maximum number of nested recursive calls that are inlined") \ 3178 range(0, max_jint) \ 3179 \ 3180 develop(intx, MaxForceInlineLevel, 100, \ 3181 "maximum number of nested calls that are forced for inlining " \ 3182 "(using CompileCommand or marked w/ @ForceInline)") \ 3183 range(0, max_jint) \ 3184 \ 3185 product_pd(intx, InlineSmallCode, \ 3186 "Only inline already compiled methods if their code size is " \ 3187 "less than this") \ 3188 range(0, max_jint) \ 3189 \ 3190 product(intx, MaxInlineSize, 35, \ 3191 "The maximum bytecode size of a method to be inlined") \ 3192 range(0, max_jint) \ 3193 \ 3194 product_pd(intx, FreqInlineSize, \ 3195 "The maximum bytecode size of a frequent method to be inlined") \ 3196 range(0, max_jint) \ 3197 \ 3198 product(intx, MaxTrivialSize, 6, \ 3199 "The maximum bytecode size of a trivial method to be inlined") \ 3200 range(0, max_jint) \ 3201 \ 3202 product(intx, MinInliningThreshold, 250, \ 3203 "The minimum invocation count a method needs to have to be " \ 3204 "inlined") \ 3205 range(0, max_jint) \ 3206 \ 3207 develop(intx, MethodHistogramCutoff, 100, \ 3208 "The cutoff value for method invocation histogram (+CountCalls)") \ 3209 \ 3210 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 3211 "Number of interpreted methods to show in profile") \ 3212 \ 3213 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 3214 "Number of compiled methods to show in profile") \ 3215 \ 3216 develop(intx, ProfilerNumberOfStubMethods, 25, \ 3217 "Number of stub methods to show in profile") \ 3218 \ 3219 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 3220 "Number of runtime stub nodes to show in profile") \ 3221 \ 3222 product(intx, ProfileIntervalsTicks, 100, \ 3223 "Number of ticks between printing of interval profile " \ 3224 "(+ProfileIntervals)") \ 3225 \ 3226 notproduct(intx, ScavengeALotInterval, 1, \ 3227 "Interval between which scavenge will occur with +ScavengeALot") \ 3228 \ 3229 notproduct(intx, FullGCALotInterval, 1, \ 3230 "Interval between which full gc will occur with +FullGCALot") \ 3231 \ 3232 notproduct(intx, FullGCALotStart, 0, \ 3233 "For which invocation to start FullGCAlot") \ 3234 \ 3235 notproduct(intx, FullGCALotDummies, 32*K, \ 3236 "Dummy object allocated with +FullGCALot, forcing all objects " \ 3237 "to move") \ 3238 \ 3239 develop(intx, DontYieldALotInterval, 10, \ 3240 "Interval between which yields will be dropped (milliseconds)") \ 3241 \ 3242 develop(intx, MinSleepInterval, 1, \ 3243 "Minimum sleep() interval (milliseconds) when " \ 3244 "ConvertSleepToYield is off (used for Solaris)") \ 3245 \ 3246 develop(intx, ProfilerPCTickThreshold, 15, \ 3247 "Number of ticks in a PC buckets to be a hotspot") \ 3248 \ 3249 notproduct(intx, DeoptimizeALotInterval, 5, \ 3250 "Number of exits until DeoptimizeALot kicks in") \ 3251 \ 3252 notproduct(intx, ZombieALotInterval, 5, \ 3253 "Number of exits until ZombieALot kicks in") \ 3254 \ 3255 diagnostic(intx, MallocVerifyInterval, 0, \ 3256 "If non-zero, verify C heap after every N calls to " \ 3257 "malloc/realloc/free") \ 3258 \ 3259 diagnostic(intx, MallocVerifyStart, 0, \ 3260 "If non-zero, start verifying C heap after Nth call to " \ 3261 "malloc/realloc/free") \ 3262 \ 3263 diagnostic(uintx, MallocMaxTestWords, 0, \ 3264 "If non-zero, maximum number of words that malloc/realloc can " \ 3265 "allocate (for testing only)") \ 3266 \ 3267 product(intx, TypeProfileWidth, 2, \ 3268 "Number of receiver types to record in call/cast profile") \ 3269 range(0, 8) \ 3270 \ 3271 experimental(intx, MethodProfileWidth, 0, \ 3272 "Number of methods to record in call profile") \ 3273 \ 3274 develop(intx, BciProfileWidth, 2, \ 3275 "Number of return bci's to record in ret profile") \ 3276 \ 3277 product(intx, PerMethodRecompilationCutoff, 400, \ 3278 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 3279 range(-1, max_intx) \ 3280 \ 3281 product(intx, PerBytecodeRecompilationCutoff, 200, \ 3282 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 3283 range(-1, max_intx) \ 3284 \ 3285 product(intx, PerMethodTrapLimit, 100, \ 3286 "Limit on traps (of one kind) in a method (includes inlines)") \ 3287 range(0, max_jint) \ 3288 \ 3289 experimental(intx, PerMethodSpecTrapLimit, 5000, \ 3290 "Limit on speculative traps (of one kind) in a method " \ 3291 "(includes inlines)") \ 3292 range(0, max_jint) \ 3293 \ 3294 product(intx, PerBytecodeTrapLimit, 4, \ 3295 "Limit on traps (of one kind) at a particular BCI") \ 3296 range(0, max_jint) \ 3297 \ 3298 experimental(intx, SpecTrapLimitExtraEntries, 3, \ 3299 "Extra method data trap entries for speculation") \ 3300 \ 3301 develop(intx, InlineFrequencyRatio, 20, \ 3302 "Ratio of call site execution to caller method invocation") \ 3303 range(0, max_jint) \ 3304 \ 3305 develop_pd(intx, InlineFrequencyCount, \ 3306 "Count of call site execution necessary to trigger frequent " \ 3307 "inlining") \ 3308 range(0, max_jint) \ 3309 \ 3310 develop(intx, InlineThrowCount, 50, \ 3311 "Force inlining of interpreted methods that throw this often") \ 3312 range(0, max_jint) \ 3313 \ 3314 develop(intx, InlineThrowMaxSize, 200, \ 3315 "Force inlining of throwing methods smaller than this") \ 3316 range(0, max_jint) \ 3317 \ 3318 develop(intx, ProfilerNodeSize, 1024, \ 3319 "Size in K to allocate for the Profile Nodes of each thread") \ 3320 range(0, 1024) \ 3321 \ 3322 /* gc parameters */ \ 3323 product(size_t, InitialHeapSize, 0, \ 3324 "Initial heap size (in bytes); zero means use ergonomics") \ 3325 constraint(InitialHeapSizeConstraintFunc,AfterErgo) \ 3326 \ 3327 product(size_t, MaxHeapSize, ScaleForWordSize(96*M), \ 3328 "Maximum heap size (in bytes)") \ 3329 constraint(MaxHeapSizeConstraintFunc,AfterErgo) \ 3330 \ 3331 product(size_t, OldSize, ScaleForWordSize(4*M), \ 3332 "Initial tenured generation size (in bytes)") \ 3333 \ 3334 product(size_t, NewSize, ScaleForWordSize(1*M), \ 3335 "Initial new generation size (in bytes)") \ 3336 constraint(NewSizeConstraintFunc,AfterErgo) \ 3337 \ 3338 product(size_t, MaxNewSize, max_uintx, \ 3339 "Maximum new generation size (in bytes), max_uintx means set " \ 3340 "ergonomically") \ 3341 \ 3342 product(size_t, PretenureSizeThreshold, 0, \ 3343 "Maximum size in bytes of objects allocated in DefNew " \ 3344 "generation; zero means no maximum") \ 3345 \ 3346 product(size_t, MinTLABSize, 2*K, \ 3347 "Minimum allowed TLAB size (in bytes)") \ 3348 range(1, max_uintx) \ 3349 constraint(MinTLABSizeConstraintFunc,AfterMemoryInit) \ 3350 \ 3351 product(size_t, TLABSize, 0, \ 3352 "Starting TLAB size (in bytes); zero means set ergonomically") \ 3353 constraint(TLABSizeConstraintFunc,AfterMemoryInit) \ 3354 \ 3355 product(size_t, YoungPLABSize, 4096, \ 3356 "Size of young gen promotion LAB's (in HeapWords)") \ 3357 constraint(YoungPLABSizeConstraintFunc,AfterMemoryInit) \ 3358 \ 3359 product(size_t, OldPLABSize, 1024, \ 3360 "Size of old gen promotion LAB's (in HeapWords), or Number " \ 3361 "of blocks to attempt to claim when refilling CMS LAB's") \ 3362 constraint(OldPLABSizeConstraintFunc,AfterMemoryInit) \ 3363 \ 3364 product(uintx, TLABAllocationWeight, 35, \ 3365 "Allocation averaging weight") \ 3366 range(0, 100) \ 3367 \ 3368 /* Limit the lower bound of this flag to 1 as it is used */ \ 3369 /* in a division expression. */ \ 3370 product(uintx, TLABWasteTargetPercent, 1, \ 3371 "Percentage of Eden that can be wasted") \ 3372 range(1, 100) \ 3373 \ 3374 product(uintx, TLABRefillWasteFraction, 64, \ 3375 "Maximum TLAB waste at a refill (internal fragmentation)") \ 3376 range(1, max_uintx) \ 3377 \ 3378 product(uintx, TLABWasteIncrement, 4, \ 3379 "Increment allowed waste at slow allocation") \ 3380 \ 3381 product(uintx, SurvivorRatio, 8, \ 3382 "Ratio of eden/survivor space size") \ 3383 range(1, max_uintx-2) \ 3384 constraint(SurvivorRatioConstraintFunc,AfterMemoryInit) \ 3385 \ 3386 product(uintx, NewRatio, 2, \ 3387 "Ratio of old/new generation sizes") \ 3388 range(0, max_uintx-1) \ 3389 \ 3390 product_pd(size_t, NewSizeThreadIncrease, \ 3391 "Additional size added to desired new generation size per " \ 3392 "non-daemon thread (in bytes)") \ 3393 \ 3394 product_pd(size_t, MetaspaceSize, \ 3395 "Initial size of Metaspaces (in bytes)") \ 3396 constraint(MetaspaceSizeConstraintFunc,AfterErgo) \ 3397 \ 3398 product(size_t, MaxMetaspaceSize, max_uintx, \ 3399 "Maximum size of Metaspaces (in bytes)") \ 3400 constraint(MaxMetaspaceSizeConstraintFunc,AfterErgo) \ 3401 \ 3402 product(size_t, CompressedClassSpaceSize, 1*G, \ 3403 "Maximum size of class area in Metaspace when compressed " \ 3404 "class pointers are used") \ 3405 range(1*M, 3*G) \ 3406 \ 3407 manageable(uintx, MinHeapFreeRatio, 40, \ 3408 "The minimum percentage of heap free after GC to avoid expansion."\ 3409 " For most GCs this applies to the old generation. In G1 and" \ 3410 " ParallelGC it applies to the whole heap.") \ 3411 range(0, 100) \ 3412 constraint(MinHeapFreeRatioConstraintFunc,AfterErgo) \ 3413 \ 3414 manageable(uintx, MaxHeapFreeRatio, 70, \ 3415 "The maximum percentage of heap free after GC to avoid shrinking."\ 3416 " For most GCs this applies to the old generation. In G1 and" \ 3417 " ParallelGC it applies to the whole heap.") \ 3418 range(0, 100) \ 3419 constraint(MaxHeapFreeRatioConstraintFunc,AfterErgo) \ 3420 \ 3421 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 3422 "Number of milliseconds per MB of free space in the heap") \ 3423 range(0, max_intx) \ 3424 constraint(SoftRefLRUPolicyMSPerMBConstraintFunc,AfterMemoryInit) \ 3425 \ 3426 product(size_t, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 3427 "The minimum change in heap space due to GC (in bytes)") \ 3428 \ 3429 product(size_t, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 3430 "The minimum expansion of Metaspace (in bytes)") \ 3431 \ 3432 product(uintx, MaxMetaspaceFreeRatio, 70, \ 3433 "The maximum percentage of Metaspace free after GC to avoid " \ 3434 "shrinking") \ 3435 range(0, 100) \ 3436 constraint(MaxMetaspaceFreeRatioConstraintFunc,AfterErgo) \ 3437 \ 3438 product(uintx, MinMetaspaceFreeRatio, 40, \ 3439 "The minimum percentage of Metaspace free after GC to avoid " \ 3440 "expansion") \ 3441 range(0, 99) \ 3442 constraint(MinMetaspaceFreeRatioConstraintFunc,AfterErgo) \ 3443 \ 3444 product(size_t, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3445 "The maximum expansion of Metaspace without full GC (in bytes)") \ 3446 \ 3447 product(uintx, QueuedAllocationWarningCount, 0, \ 3448 "Number of times an allocation that queues behind a GC " \ 3449 "will retry before printing a warning") \ 3450 \ 3451 diagnostic(uintx, VerifyGCStartAt, 0, \ 3452 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3453 \ 3454 diagnostic(intx, VerifyGCLevel, 0, \ 3455 "Generation level at which to start +VerifyBefore/AfterGC") \ 3456 range(0, 1) \ 3457 \ 3458 product(uintx, MaxTenuringThreshold, 15, \ 3459 "Maximum value for tenuring threshold") \ 3460 range(0, markOopDesc::max_age + 1) \ 3461 constraint(MaxTenuringThresholdConstraintFunc,AfterErgo) \ 3462 \ 3463 product(uintx, InitialTenuringThreshold, 7, \ 3464 "Initial value for tenuring threshold") \ 3465 range(0, markOopDesc::max_age + 1) \ 3466 constraint(InitialTenuringThresholdConstraintFunc,AfterErgo) \ 3467 \ 3468 product(uintx, TargetSurvivorRatio, 50, \ 3469 "Desired percentage of survivor space used after scavenge") \ 3470 range(0, 100) \ 3471 \ 3472 product(uintx, MarkSweepDeadRatio, 5, \ 3473 "Percentage (0-100) of the old gen allowed as dead wood. " \ 3474 "Serial mark sweep treats this as both the minimum and maximum " \ 3475 "value. " \ 3476 "CMS uses this value only if it falls back to mark sweep. " \ 3477 "Par compact uses a variable scale based on the density of the " \ 3478 "generation and treats this as the maximum value when the heap " \ 3479 "is either completely full or completely empty. Par compact " \ 3480 "also has a smaller default value; see arguments.cpp.") \ 3481 range(0, 100) \ 3482 \ 3483 product(uintx, MarkSweepAlwaysCompactCount, 4, \ 3484 "How often should we fully compact the heap (ignoring the dead " \ 3485 "space parameters)") \ 3486 range(1, max_uintx) \ 3487 \ 3488 product(intx, PrintCMSStatistics, 0, \ 3489 "Statistics for CMS") \ 3490 \ 3491 product(bool, PrintCMSInitiationStatistics, false, \ 3492 "Statistics for initiating a CMS collection") \ 3493 \ 3494 product(intx, PrintFLSStatistics, 0, \ 3495 "Statistics for CMS' FreeListSpace") \ 3496 \ 3497 product(intx, PrintFLSCensus, 0, \ 3498 "Census for CMS' FreeListSpace") \ 3499 \ 3500 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 3501 "Delay between expansion and allocation (in milliseconds)") \ 3502 \ 3503 develop(uintx, GCWorkerDelayMillis, 0, \ 3504 "Delay in scheduling GC workers (in milliseconds)") \ 3505 \ 3506 product(intx, DeferThrSuspendLoopCount, 4000, \ 3507 "(Unstable) Number of times to iterate in safepoint loop " \ 3508 "before blocking VM threads ") \ 3509 \ 3510 product(intx, DeferPollingPageLoopCount, -1, \ 3511 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 3512 "before changing safepoint polling page to RO ") \ 3513 \ 3514 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 3515 range(0, max_intx) \ 3516 \ 3517 product(bool, PSChunkLargeArrays, true, \ 3518 "Process large arrays in chunks") \ 3519 \ 3520 product(uintx, GCDrainStackTargetSize, 64, \ 3521 "Number of entries we will try to leave on the stack " \ 3522 "during parallel gc") \ 3523 \ 3524 /* stack parameters */ \ 3525 product_pd(intx, StackYellowPages, \ 3526 "Number of yellow zone (recoverable overflows) pages") \ 3527 range(1, max_intx) \ 3528 \ 3529 product_pd(intx, StackRedPages, \ 3530 "Number of red zone (unrecoverable overflows) pages") \ 3531 range(1, max_intx) \ 3532 \ 3533 /* greater stack shadow pages can't generate instruction to bang stack */ \ 3534 product_pd(intx, StackShadowPages, \ 3535 "Number of shadow zone (for overflow checking) pages " \ 3536 "this should exceed the depth of the VM and native call stack") \ 3537 range(1, 50) \ 3538 \ 3539 product_pd(intx, ThreadStackSize, \ 3540 "Thread Stack Size (in Kbytes)") \ 3541 \ 3542 product_pd(intx, VMThreadStackSize, \ 3543 "Non-Java Thread Stack Size (in Kbytes)") \ 3544 \ 3545 product_pd(intx, CompilerThreadStackSize, \ 3546 "Compiler Thread Stack Size (in Kbytes)") \ 3547 range(0, max_intx) \ 3548 \ 3549 develop_pd(size_t, JVMInvokeMethodSlack, \ 3550 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 3551 \ 3552 /* code cache parameters */ \ 3553 /* ppc64/tiered compilation has large code-entry alignment. */ \ 3554 develop(uintx, CodeCacheSegmentSize, 64 PPC64_ONLY(+64) NOT_PPC64(TIERED_ONLY(+64)),\ 3555 "Code cache segment size (in bytes) - smallest unit of " \ 3556 "allocation") \ 3557 range(1, 1024) \ 3558 constraint(CodeCacheSegmentSizeConstraintFunc, AfterErgo) \ 3559 \ 3560 develop_pd(intx, CodeEntryAlignment, \ 3561 "Code entry alignment for generated code (in bytes)") \ 3562 constraint(CodeEntryAlignmentConstraintFunc, AfterErgo) \ 3563 \ 3564 product_pd(intx, OptoLoopAlignment, \ 3565 "Align inner loops to zero relative to this modulus") \ 3566 constraint(OptoLoopAlignmentConstraintFunc, AfterErgo) \ 3567 \ 3568 product_pd(uintx, InitialCodeCacheSize, \ 3569 "Initial code cache size (in bytes)") \ 3570 range(0, max_uintx) \ 3571 \ 3572 develop_pd(uintx, CodeCacheMinimumUseSpace, \ 3573 "Minimum code cache size (in bytes) required to start VM.") \ 3574 range(0, max_uintx) \ 3575 \ 3576 product(bool, SegmentedCodeCache, false, \ 3577 "Use a segmented code cache") \ 3578 \ 3579 product_pd(uintx, ReservedCodeCacheSize, \ 3580 "Reserved code cache size (in bytes) - maximum code cache size") \ 3581 range(0, max_uintx) \ 3582 \ 3583 product_pd(uintx, NonProfiledCodeHeapSize, \ 3584 "Size of code heap with non-profiled methods (in bytes)") \ 3585 range(0, max_uintx) \ 3586 \ 3587 product_pd(uintx, ProfiledCodeHeapSize, \ 3588 "Size of code heap with profiled methods (in bytes)") \ 3589 range(0, max_uintx) \ 3590 \ 3591 product_pd(uintx, NonNMethodCodeHeapSize, \ 3592 "Size of code heap with non-nmethods (in bytes)") \ 3593 range(0, max_uintx) \ 3594 \ 3595 product_pd(uintx, CodeCacheExpansionSize, \ 3596 "Code cache expansion size (in bytes)") \ 3597 range(0, max_uintx) \ 3598 \ 3599 develop_pd(uintx, CodeCacheMinBlockLength, \ 3600 "Minimum number of segments in a code cache block") \ 3601 range(1, 100) \ 3602 \ 3603 notproduct(bool, ExitOnFullCodeCache, false, \ 3604 "Exit the VM if we fill the code cache") \ 3605 \ 3606 product(bool, UseCodeCacheFlushing, true, \ 3607 "Remove cold/old nmethods from the code cache") \ 3608 \ 3609 product(uintx, StartAggressiveSweepingAt, 10, \ 3610 "Start aggressive sweeping if X[%] of the code cache is free." \ 3611 "Segmented code cache: X[%] of the non-profiled heap." \ 3612 "Non-segmented code cache: X[%] of the total code cache") \ 3613 range(0, 100) \ 3614 \ 3615 /* interpreter debugging */ \ 3616 develop(intx, BinarySwitchThreshold, 5, \ 3617 "Minimal number of lookupswitch entries for rewriting to binary " \ 3618 "switch") \ 3619 \ 3620 develop(intx, StopInterpreterAt, 0, \ 3621 "Stop interpreter execution at specified bytecode number") \ 3622 \ 3623 develop(intx, TraceBytecodesAt, 0, \ 3624 "Trace bytecodes starting with specified bytecode number") \ 3625 \ 3626 /* compiler interface */ \ 3627 develop(intx, CIStart, 0, \ 3628 "The id of the first compilation to permit") \ 3629 \ 3630 develop(intx, CIStop, max_jint, \ 3631 "The id of the last compilation to permit") \ 3632 \ 3633 develop(intx, CIStartOSR, 0, \ 3634 "The id of the first osr compilation to permit " \ 3635 "(CICountOSR must be on)") \ 3636 \ 3637 develop(intx, CIStopOSR, max_jint, \ 3638 "The id of the last osr compilation to permit " \ 3639 "(CICountOSR must be on)") \ 3640 \ 3641 develop(intx, CIBreakAtOSR, -1, \ 3642 "The id of osr compilation to break at") \ 3643 \ 3644 develop(intx, CIBreakAt, -1, \ 3645 "The id of compilation to break at") \ 3646 \ 3647 product(ccstrlist, CompileOnly, "", \ 3648 "List of methods (pkg/class.name) to restrict compilation to") \ 3649 \ 3650 product(ccstr, CompileCommandFile, NULL, \ 3651 "Read compiler commands from this file [.hotspot_compiler]") \ 3652 \ 3653 diagnostic(ccstr, CompilerDirectivesFile, NULL, \ 3654 "Read compiler directives from this file") \ 3655 \ 3656 product(ccstrlist, CompileCommand, "", \ 3657 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3658 \ 3659 develop(bool, ReplayCompiles, false, \ 3660 "Enable replay of compilations from ReplayDataFile") \ 3661 \ 3662 product(ccstr, ReplayDataFile, NULL, \ 3663 "File containing compilation replay information" \ 3664 "[default: ./replay_pid%p.log] (%p replaced with pid)") \ 3665 \ 3666 product(ccstr, InlineDataFile, NULL, \ 3667 "File containing inlining replay information" \ 3668 "[default: ./inline_pid%p.log] (%p replaced with pid)") \ 3669 \ 3670 develop(intx, ReplaySuppressInitializers, 2, \ 3671 "Control handling of class initialization during replay: " \ 3672 "0 - don't do anything special; " \ 3673 "1 - treat all class initializers as empty; " \ 3674 "2 - treat class initializers for application classes as empty; " \ 3675 "3 - allow all class initializers to run during bootstrap but " \ 3676 " pretend they are empty after starting replay") \ 3677 range(0, 3) \ 3678 \ 3679 develop(bool, ReplayIgnoreInitErrors, false, \ 3680 "Ignore exceptions thrown during initialization for replay") \ 3681 \ 3682 product(bool, DumpReplayDataOnError, true, \ 3683 "Record replay data for crashing compiler threads") \ 3684 \ 3685 product(bool, CICompilerCountPerCPU, false, \ 3686 "1 compiler thread for log(N CPUs)") \ 3687 \ 3688 develop(intx, CIFireOOMAt, -1, \ 3689 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3690 "(non-negative value throws OOM after this many CI accesses " \ 3691 "in each compile)") \ 3692 notproduct(intx, CICrashAt, -1, \ 3693 "id of compilation to trigger assert in compiler thread for " \ 3694 "the purpose of testing, e.g. generation of replay data") \ 3695 notproduct(bool, CIObjectFactoryVerify, false, \ 3696 "enable potentially expensive verification in ciObjectFactory") \ 3697 \ 3698 /* Priorities */ \ 3699 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3700 \ 3701 product(intx, ThreadPriorityPolicy, 0, \ 3702 "0 : Normal. "\ 3703 " VM chooses priorities that are appropriate for normal "\ 3704 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3705 " to normal native priority. Java priorities below " \ 3706 " NORM_PRIORITY map to lower native priority values. On "\ 3707 " Windows applications are allowed to use higher native "\ 3708 " priorities. However, with ThreadPriorityPolicy=0, VM will "\ 3709 " not use the highest possible native priority, "\ 3710 " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\ 3711 " system threads. On Linux thread priorities are ignored "\ 3712 " because the OS does not support static priority in "\ 3713 " SCHED_OTHER scheduling class which is the only choice for "\ 3714 " non-root, non-realtime applications. "\ 3715 "1 : Aggressive. "\ 3716 " Java thread priorities map over to the entire range of "\ 3717 " native thread priorities. Higher Java thread priorities map "\ 3718 " to higher native thread priorities. This policy should be "\ 3719 " used with care, as sometimes it can cause performance "\ 3720 " degradation in the application and/or the entire system. On "\ 3721 " Linux this policy requires root privilege.") \ 3722 range(0, 1) \ 3723 \ 3724 product(bool, ThreadPriorityVerbose, false, \ 3725 "Print priority changes") \ 3726 \ 3727 product(intx, CompilerThreadPriority, -1, \ 3728 "The native priority at which compiler threads should run " \ 3729 "(-1 means no change)") \ 3730 constraint(CompilerThreadPriorityConstraintFunc, AfterErgo) \ 3731 \ 3732 product(intx, VMThreadPriority, -1, \ 3733 "The native priority at which the VM thread should run " \ 3734 "(-1 means no change)") \ 3735 \ 3736 product(bool, CompilerThreadHintNoPreempt, true, \ 3737 "(Solaris only) Give compiler threads an extra quanta") \ 3738 \ 3739 product(bool, VMThreadHintNoPreempt, false, \ 3740 "(Solaris only) Give VM thread an extra quanta") \ 3741 \ 3742 product(intx, JavaPriority1_To_OSPriority, -1, \ 3743 "Map Java priorities to OS priorities") \ 3744 \ 3745 product(intx, JavaPriority2_To_OSPriority, -1, \ 3746 "Map Java priorities to OS priorities") \ 3747 \ 3748 product(intx, JavaPriority3_To_OSPriority, -1, \ 3749 "Map Java priorities to OS priorities") \ 3750 \ 3751 product(intx, JavaPriority4_To_OSPriority, -1, \ 3752 "Map Java priorities to OS priorities") \ 3753 \ 3754 product(intx, JavaPriority5_To_OSPriority, -1, \ 3755 "Map Java priorities to OS priorities") \ 3756 \ 3757 product(intx, JavaPriority6_To_OSPriority, -1, \ 3758 "Map Java priorities to OS priorities") \ 3759 \ 3760 product(intx, JavaPriority7_To_OSPriority, -1, \ 3761 "Map Java priorities to OS priorities") \ 3762 \ 3763 product(intx, JavaPriority8_To_OSPriority, -1, \ 3764 "Map Java priorities to OS priorities") \ 3765 \ 3766 product(intx, JavaPriority9_To_OSPriority, -1, \ 3767 "Map Java priorities to OS priorities") \ 3768 \ 3769 product(intx, JavaPriority10_To_OSPriority,-1, \ 3770 "Map Java priorities to OS priorities") \ 3771 \ 3772 experimental(bool, UseCriticalJavaThreadPriority, false, \ 3773 "Java thread priority 10 maps to critical scheduling priority") \ 3774 \ 3775 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 3776 "Compiler thread(s) run at critical scheduling priority") \ 3777 \ 3778 experimental(bool, UseCriticalCMSThreadPriority, false, \ 3779 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 3780 \ 3781 /* compiler debugging */ \ 3782 notproduct(intx, CompileTheWorldStartAt, 1, \ 3783 "First class to consider when using +CompileTheWorld") \ 3784 \ 3785 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3786 "Last class to consider when using +CompileTheWorld") \ 3787 \ 3788 develop(intx, NewCodeParameter, 0, \ 3789 "Testing Only: Create a dedicated integer parameter before " \ 3790 "putback") \ 3791 \ 3792 /* new oopmap storage allocation */ \ 3793 develop(intx, MinOopMapAllocation, 8, \ 3794 "Minimum number of OopMap entries in an OopMapSet") \ 3795 \ 3796 /* Background Compilation */ \ 3797 develop(intx, LongCompileThreshold, 50, \ 3798 "Used with +TraceLongCompiles") \ 3799 \ 3800 /* recompilation */ \ 3801 product_pd(intx, CompileThreshold, \ 3802 "number of interpreted method invocations before (re-)compiling") \ 3803 constraint(CompileThresholdConstraintFunc, AfterErgo) \ 3804 \ 3805 product(double, CompileThresholdScaling, 1.0, \ 3806 "Factor to control when first compilation happens " \ 3807 "(both with and without tiered compilation): " \ 3808 "values greater than 1.0 delay counter overflow, " \ 3809 "values between 0 and 1.0 rush counter overflow, " \ 3810 "value of 1.0 leaves compilation thresholds unchanged " \ 3811 "value of 0.0 is equivalent to -Xint. " \ 3812 "" \ 3813 "Flag can be set as per-method option. " \ 3814 "If a value is specified for a method, compilation thresholds " \ 3815 "for that method are scaled by both the value of the global flag "\ 3816 "and the value of the per-method flag.") \ 3817 range(0.0, DBL_MAX) \ 3818 \ 3819 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 3820 "Interpreter (tier 0) invocation notification frequency") \ 3821 range(0, 30) \ 3822 \ 3823 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 3824 "C1 without MDO (tier 2) invocation notification frequency") \ 3825 range(0, 30) \ 3826 \ 3827 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 3828 "C1 with MDO profiling (tier 3) invocation notification " \ 3829 "frequency") \ 3830 range(0, 30) \ 3831 \ 3832 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 3833 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 3834 range(0, 30) \ 3835 \ 3836 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 3837 "Interpreter (tier 0) invocation notification frequency") \ 3838 range(0, 30) \ 3839 \ 3840 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 3841 "C1 without MDO (tier 2) invocation notification frequency") \ 3842 range(0, 30) \ 3843 \ 3844 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 3845 "C1 with MDO profiling (tier 3) invocation notification " \ 3846 "frequency") \ 3847 range(0, 30) \ 3848 \ 3849 product(intx, Tier2CompileThreshold, 0, \ 3850 "threshold at which tier 2 compilation is invoked") \ 3851 range(0, max_jint) \ 3852 \ 3853 product(intx, Tier2BackEdgeThreshold, 0, \ 3854 "Back edge threshold at which tier 2 compilation is invoked") \ 3855 range(0, max_jint) \ 3856 \ 3857 product(intx, Tier3InvocationThreshold, 200, \ 3858 "Compile if number of method invocations crosses this " \ 3859 "threshold") \ 3860 range(0, max_jint) \ 3861 \ 3862 product(intx, Tier3MinInvocationThreshold, 100, \ 3863 "Minimum invocation to compile at tier 3") \ 3864 range(0, max_jint) \ 3865 \ 3866 product(intx, Tier3CompileThreshold, 2000, \ 3867 "Threshold at which tier 3 compilation is invoked (invocation " \ 3868 "minimum must be satisfied)") \ 3869 range(0, max_jint) \ 3870 \ 3871 product(intx, Tier3BackEdgeThreshold, 60000, \ 3872 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 3873 range(0, max_jint) \ 3874 \ 3875 product(intx, Tier4InvocationThreshold, 5000, \ 3876 "Compile if number of method invocations crosses this " \ 3877 "threshold") \ 3878 range(0, max_jint) \ 3879 \ 3880 product(intx, Tier4MinInvocationThreshold, 600, \ 3881 "Minimum invocation to compile at tier 4") \ 3882 range(0, max_jint) \ 3883 \ 3884 product(intx, Tier4CompileThreshold, 15000, \ 3885 "Threshold at which tier 4 compilation is invoked (invocation " \ 3886 "minimum must be satisfied") \ 3887 range(0, max_jint) \ 3888 \ 3889 product(intx, Tier4BackEdgeThreshold, 40000, \ 3890 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 3891 range(0, max_jint) \ 3892 \ 3893 product(intx, Tier3DelayOn, 5, \ 3894 "If C2 queue size grows over this amount per compiler thread " \ 3895 "stop compiling at tier 3 and start compiling at tier 2") \ 3896 range(0, max_jint) \ 3897 \ 3898 product(intx, Tier3DelayOff, 2, \ 3899 "If C2 queue size is less than this amount per compiler thread " \ 3900 "allow methods compiled at tier 2 transition to tier 3") \ 3901 range(0, max_jint) \ 3902 \ 3903 product(intx, Tier3LoadFeedback, 5, \ 3904 "Tier 3 thresholds will increase twofold when C1 queue size " \ 3905 "reaches this amount per compiler thread") \ 3906 range(0, max_jint) \ 3907 \ 3908 product(intx, Tier4LoadFeedback, 3, \ 3909 "Tier 4 thresholds will increase twofold when C2 queue size " \ 3910 "reaches this amount per compiler thread") \ 3911 range(0, max_jint) \ 3912 \ 3913 product(intx, TieredCompileTaskTimeout, 50, \ 3914 "Kill compile task if method was not used within " \ 3915 "given timeout in milliseconds") \ 3916 range(0, max_intx) \ 3917 \ 3918 product(intx, TieredStopAtLevel, 4, \ 3919 "Stop at given compilation level") \ 3920 range(0, 4) \ 3921 \ 3922 product(intx, Tier0ProfilingStartPercentage, 200, \ 3923 "Start profiling in interpreter if the counters exceed tier 3 " \ 3924 "thresholds by the specified percentage") \ 3925 range(0, max_jint) \ 3926 \ 3927 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ 3928 "Increase the compile threshold for C1 compilation if the code " \ 3929 "cache is filled by the specified percentage") \ 3930 range(0, 99) \ 3931 \ 3932 product(intx, TieredRateUpdateMinTime, 1, \ 3933 "Minimum rate sampling interval (in milliseconds)") \ 3934 range(0, max_intx) \ 3935 \ 3936 product(intx, TieredRateUpdateMaxTime, 25, \ 3937 "Maximum rate sampling interval (in milliseconds)") \ 3938 range(0, max_intx) \ 3939 \ 3940 product_pd(bool, TieredCompilation, \ 3941 "Enable tiered compilation") \ 3942 \ 3943 product(bool, PrintTieredEvents, false, \ 3944 "Print tiered events notifications") \ 3945 \ 3946 product_pd(intx, OnStackReplacePercentage, \ 3947 "NON_TIERED number of method invocations/branches (expressed as " \ 3948 "% of CompileThreshold) before (re-)compiling OSR code") \ 3949 constraint(OnStackReplacePercentageConstraintFunc, AfterErgo) \ 3950 \ 3951 product(intx, InterpreterProfilePercentage, 33, \ 3952 "NON_TIERED number of method invocations/branches (expressed as " \ 3953 "% of CompileThreshold) before profiling in the interpreter") \ 3954 range(0, 100) \ 3955 \ 3956 develop(intx, MaxRecompilationSearchLength, 10, \ 3957 "The maximum number of frames to inspect when searching for " \ 3958 "recompilee") \ 3959 \ 3960 develop(intx, MaxInterpretedSearchLength, 3, \ 3961 "The maximum number of interpreted frames to skip when searching "\ 3962 "for recompilee") \ 3963 \ 3964 develop(intx, DesiredMethodLimit, 8000, \ 3965 "The desired maximum method size (in bytecodes) after inlining") \ 3966 \ 3967 develop(intx, HugeMethodLimit, 8000, \ 3968 "Don't compile methods larger than this if " \ 3969 "+DontCompileHugeMethods") \ 3970 \ 3971 /* New JDK 1.4 reflection implementation */ \ 3972 \ 3973 develop(intx, FastSuperclassLimit, 8, \ 3974 "Depth of hardwired instanceof accelerator array") \ 3975 \ 3976 /* Properties for Java libraries */ \ 3977 \ 3978 product(size_t, MaxDirectMemorySize, 0, \ 3979 "Maximum total size of NIO direct-buffer allocations") \ 3980 \ 3981 /* Flags used for temporary code during development */ \ 3982 \ 3983 diagnostic(bool, UseNewCode, false, \ 3984 "Testing Only: Use the new version while testing") \ 3985 \ 3986 diagnostic(bool, UseNewCode2, false, \ 3987 "Testing Only: Use the new version while testing") \ 3988 \ 3989 diagnostic(bool, UseNewCode3, false, \ 3990 "Testing Only: Use the new version while testing") \ 3991 \ 3992 /* flags for performance data collection */ \ 3993 \ 3994 product(bool, UsePerfData, falseInEmbedded, \ 3995 "Flag to disable jvmstat instrumentation for performance testing "\ 3996 "and problem isolation purposes") \ 3997 \ 3998 product(bool, PerfDataSaveToFile, false, \ 3999 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 4000 \ 4001 product(ccstr, PerfDataSaveFile, NULL, \ 4002 "Save PerfData memory to the specified absolute pathname. " \ 4003 "The string %p in the file name (if present) " \ 4004 "will be replaced by pid") \ 4005 \ 4006 product(intx, PerfDataSamplingInterval, 50, \ 4007 "Data sampling interval (in milliseconds)") \ 4008 \ 4009 develop(bool, PerfTraceDataCreation, false, \ 4010 "Trace creation of Performance Data Entries") \ 4011 \ 4012 develop(bool, PerfTraceMemOps, false, \ 4013 "Trace PerfMemory create/attach/detach calls") \ 4014 \ 4015 product(bool, PerfDisableSharedMem, false, \ 4016 "Store performance data in standard memory") \ 4017 \ 4018 product(intx, PerfDataMemorySize, 64*K, \ 4019 "Size of performance data memory region. Will be rounded " \ 4020 "up to a multiple of the native os page size.") \ 4021 \ 4022 product(intx, PerfMaxStringConstLength, 1024, \ 4023 "Maximum PerfStringConstant string length before truncation") \ 4024 \ 4025 product(bool, PerfAllowAtExitRegistration, false, \ 4026 "Allow registration of atexit() methods") \ 4027 \ 4028 product(bool, PerfBypassFileSystemCheck, false, \ 4029 "Bypass Win32 file system criteria checks (Windows Only)") \ 4030 \ 4031 product(intx, UnguardOnExecutionViolation, 0, \ 4032 "Unguard page and retry on no-execute fault (Win32 only) " \ 4033 "0=off, 1=conservative, 2=aggressive") \ 4034 range(0, 2) \ 4035 \ 4036 /* Serviceability Support */ \ 4037 \ 4038 product(bool, ManagementServer, false, \ 4039 "Create JMX Management Server") \ 4040 \ 4041 product(bool, DisableAttachMechanism, false, \ 4042 "Disable mechanism that allows tools to attach to this VM") \ 4043 \ 4044 product(bool, StartAttachListener, false, \ 4045 "Always start Attach Listener at VM startup") \ 4046 \ 4047 manageable(bool, PrintConcurrentLocks, false, \ 4048 "Print java.util.concurrent locks in thread dump") \ 4049 \ 4050 product(bool, TransmitErrorReport, false, \ 4051 "Enable error report transmission on erroneous termination") \ 4052 \ 4053 product(ccstr, ErrorReportServer, NULL, \ 4054 "Override built-in error report server address") \ 4055 \ 4056 /* Shared spaces */ \ 4057 \ 4058 product(bool, UseSharedSpaces, true, \ 4059 "Use shared spaces for metadata") \ 4060 \ 4061 product(bool, VerifySharedSpaces, false, \ 4062 "Verify shared spaces (false for default archive, true for " \ 4063 "archive specified by -XX:SharedArchiveFile)") \ 4064 \ 4065 product(bool, RequireSharedSpaces, false, \ 4066 "Require shared spaces for metadata") \ 4067 \ 4068 product(bool, DumpSharedSpaces, false, \ 4069 "Special mode: JVM reads a class list, loads classes, builds " \ 4070 "shared spaces, and dumps the shared spaces to a file to be " \ 4071 "used in future JVM runs") \ 4072 \ 4073 product(bool, PrintSharedSpaces, false, \ 4074 "Print usage of shared spaces") \ 4075 \ 4076 product(bool, PrintSharedArchiveAndExit, false, \ 4077 "Print shared archive file contents") \ 4078 \ 4079 product(bool, PrintSharedDictionary, false, \ 4080 "If PrintSharedArchiveAndExit is true, also print the shared " \ 4081 "dictionary") \ 4082 \ 4083 product(size_t, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 4084 "Size of read-write space for metadata (in bytes)") \ 4085 \ 4086 product(size_t, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 4087 "Size of read-only space for metadata (in bytes)") \ 4088 \ 4089 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ 4090 "Size of the shared miscellaneous data area (in bytes)") \ 4091 \ 4092 product(uintx, SharedMiscCodeSize, 120*K, \ 4093 "Size of the shared miscellaneous code area (in bytes)") \ 4094 \ 4095 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \ 4096 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ 4097 "Address to allocate shared memory region for class data") \ 4098 \ 4099 product(uintx, SharedSymbolTableBucketSize, 4, \ 4100 "Average number of symbols per bucket in shared table") \ 4101 \ 4102 diagnostic(bool, IgnoreUnverifiableClassesDuringDump, false, \ 4103 "Do not quit -Xshare:dump even if we encounter unverifiable " \ 4104 "classes. Just exclude them from the shared dictionary.") \ 4105 \ 4106 diagnostic(bool, PrintMethodHandleStubs, false, \ 4107 "Print generated stub code for method handles") \ 4108 \ 4109 develop(bool, TraceMethodHandles, false, \ 4110 "trace internal method handle operations") \ 4111 \ 4112 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 4113 "perform extra checks when constructing method handles") \ 4114 \ 4115 diagnostic(bool, ShowHiddenFrames, false, \ 4116 "show method handle implementation frames (usually hidden)") \ 4117 \ 4118 experimental(bool, TrustFinalNonStaticFields, false, \ 4119 "trust final non-static declarations for constant folding") \ 4120 \ 4121 diagnostic(bool, FoldStableValues, true, \ 4122 "Optimize loads from stable fields (marked w/ @Stable)") \ 4123 \ 4124 develop(bool, TraceInvokeDynamic, false, \ 4125 "trace internal invoke dynamic operations") \ 4126 \ 4127 diagnostic(bool, PauseAtStartup, false, \ 4128 "Causes the VM to pause at startup time and wait for the pause " \ 4129 "file to be removed (default: ./vm.paused.<pid>)") \ 4130 \ 4131 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 4132 "The file to create and for whose removal to await when pausing " \ 4133 "at startup. (default: ./vm.paused.<pid>)") \ 4134 \ 4135 diagnostic(bool, PauseAtExit, false, \ 4136 "Pause and wait for keypress on exit if a debugger is attached") \ 4137 \ 4138 product(bool, ExtendedDTraceProbes, false, \ 4139 "Enable performance-impacting dtrace probes") \ 4140 \ 4141 product(bool, DTraceMethodProbes, false, \ 4142 "Enable dtrace probes for method-entry and method-exit") \ 4143 \ 4144 product(bool, DTraceAllocProbes, false, \ 4145 "Enable dtrace probes for object allocation") \ 4146 \ 4147 product(bool, DTraceMonitorProbes, false, \ 4148 "Enable dtrace probes for monitor events") \ 4149 \ 4150 product(bool, RelaxAccessControlCheck, false, \ 4151 "Relax the access control checks in the verifier") \ 4152 \ 4153 product(uintx, StringTableSize, defaultStringTableSize, \ 4154 "Number of buckets in the interned String table") \ 4155 range(minimumStringTableSize, 111*defaultStringTableSize) \ 4156 \ 4157 experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \ 4158 "Number of buckets in the JVM internal Symbol table") \ 4159 range(minimumSymbolTableSize, 111*defaultSymbolTableSize) \ 4160 \ 4161 product(bool, UseStringDeduplication, false, \ 4162 "Use string deduplication") \ 4163 \ 4164 product(bool, PrintStringDeduplicationStatistics, false, \ 4165 "Print string deduplication statistics") \ 4166 \ 4167 product(uintx, StringDeduplicationAgeThreshold, 3, \ 4168 "A string must reach this age (or be promoted to an old region) " \ 4169 "to be considered for deduplication") \ 4170 range(1, markOopDesc::max_age) \ 4171 \ 4172 diagnostic(bool, StringDeduplicationResizeALot, false, \ 4173 "Force table resize every time the table is scanned") \ 4174 \ 4175 diagnostic(bool, StringDeduplicationRehashALot, false, \ 4176 "Force table rehash every time the table is scanned") \ 4177 \ 4178 develop(bool, TraceDefaultMethods, false, \ 4179 "Trace the default method processing steps") \ 4180 \ 4181 diagnostic(bool, WhiteBoxAPI, false, \ 4182 "Enable internal testing APIs") \ 4183 \ 4184 product(bool, PrintGCCause, true, \ 4185 "Include GC cause in GC logging") \ 4186 \ 4187 experimental(intx, SurvivorAlignmentInBytes, 0, \ 4188 "Default survivor space alignment in bytes") \ 4189 constraint(SurvivorAlignmentInBytesConstraintFunc,AfterErgo) \ 4190 \ 4191 product(bool , AllowNonVirtualCalls, false, \ 4192 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \ 4193 \ 4194 product(ccstr, DumpLoadedClassList, NULL, \ 4195 "Dump the names all loaded classes, that could be stored into " \ 4196 "the CDS archive, in the specified file") \ 4197 \ 4198 product(ccstr, SharedClassListFile, NULL, \ 4199 "Override the default CDS class list") \ 4200 \ 4201 diagnostic(ccstr, SharedArchiveFile, NULL, \ 4202 "Override the default location of the CDS archive file") \ 4203 \ 4204 product(ccstr, ExtraSharedClassListFile, NULL, \ 4205 "Extra classlist for building the CDS archive file") \ 4206 \ 4207 experimental(size_t, ArrayAllocatorMallocLimit, \ 4208 SOLARIS_ONLY(64*K) NOT_SOLARIS((size_t)-1), \ 4209 "Allocation less than this value will be allocated " \ 4210 "using malloc. Larger allocations will use mmap.") \ 4211 \ 4212 experimental(bool, AlwaysAtomicAccesses, false, \ 4213 "Accesses to all variables should always be atomic") \ 4214 \ 4215 product(bool, EnableTracing, false, \ 4216 "Enable event-based tracing") \ 4217 \ 4218 product(bool, UseLockedTracing, false, \ 4219 "Use locked-tracing when doing event-based tracing") \ 4220 \ 4221 diagnostic(bool, UseUnalignedAccesses, false, \ 4222 "Use unaligned memory accesses in sun.misc.Unsafe") \ 4223 \ 4224 product_pd(bool, PreserveFramePointer, \ 4225 "Use the FP register for holding the frame pointer " \ 4226 "and not as a general purpose register.") \ 4227 \ 4228 diagnostic(bool, CheckIntrinsics, true, \ 4229 "When a class C is loaded, check that " \ 4230 "(1) all intrinsics defined by the VM for class C are present "\ 4231 "in the loaded class file and are marked with the " \ 4232 "@HotSpotIntrinsicCandidate annotation, that " \ 4233 "(2) there is an intrinsic registered for all loaded methods " \ 4234 "that are annotated with the @HotSpotIntrinsicCandidate " \ 4235 "annotation, and that " \ 4236 "(3) no orphan methods exist for class C (i.e., methods for " \ 4237 "which the VM declares an intrinsic but that are not declared "\ 4238 "in the loaded class C. " \ 4239 "Check (3) is available only in debug builds.") \ 4240 \ 4241 diagnostic(bool, CompilerDirectivesIgnoreCompileCommands, false, \ 4242 "Disable backwards compatibility for compile commands.") \ 4243 \ 4244 diagnostic(bool, PrintCompilerDirectives, false, \ 4245 "Print compiler directives on installation.") 4246 4247/* 4248 * Macros for factoring of globals 4249 */ 4250 4251// Interface macros 4252#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 4253#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 4254#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 4255#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 4256#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 4257#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 4258#ifdef PRODUCT 4259#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type CONST_##name; const type name = value; 4260#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type CONST_##name; const type name = pd_##name; 4261#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type CONST_##name; 4262#else 4263#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 4264#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 4265#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 4266#endif // PRODUCT 4267// Special LP64 flags, product only needed for now. 4268#ifdef _LP64 4269#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 4270#else 4271#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 4272#endif // _LP64 4273 4274// Implementation macros 4275#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 4276#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 4277#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 4278#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 4279#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 4280#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 4281#ifdef PRODUCT 4282#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type CONST_##name = value; 4283#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type CONST_##name = pd_##name; 4284#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type CONST_##name = value; 4285#else 4286#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 4287#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 4288#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 4289#endif // PRODUCT 4290#ifdef _LP64 4291#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 4292#else 4293#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 4294#endif // _LP64 4295 4296// Only materialize src code for range checking when required, ignore otherwise 4297#define IGNORE_RANGE(a, b) 4298// Only materialize src code for contraint checking when required, ignore otherwise 4299#define IGNORE_CONSTRAINT(func,type) 4300 4301RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, \ 4302 DECLARE_PD_DEVELOPER_FLAG, \ 4303 DECLARE_PRODUCT_FLAG, \ 4304 DECLARE_PD_PRODUCT_FLAG, \ 4305 DECLARE_DIAGNOSTIC_FLAG, \ 4306 DECLARE_EXPERIMENTAL_FLAG, \ 4307 DECLARE_NOTPRODUCT_FLAG, \ 4308 DECLARE_MANAGEABLE_FLAG, \ 4309 DECLARE_PRODUCT_RW_FLAG, \ 4310 DECLARE_LP64_PRODUCT_FLAG, \ 4311 IGNORE_RANGE, \ 4312 IGNORE_CONSTRAINT) 4313 4314RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, \ 4315 DECLARE_PD_DEVELOPER_FLAG, \ 4316 DECLARE_PRODUCT_FLAG, \ 4317 DECLARE_PD_PRODUCT_FLAG, \ 4318 DECLARE_DIAGNOSTIC_FLAG, \ 4319 DECLARE_NOTPRODUCT_FLAG, \ 4320 IGNORE_RANGE, \ 4321 IGNORE_CONSTRAINT) 4322 4323ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, \ 4324 DECLARE_PRODUCT_FLAG, \ 4325 DECLARE_DIAGNOSTIC_FLAG, \ 4326 DECLARE_EXPERIMENTAL_FLAG, \ 4327 DECLARE_NOTPRODUCT_FLAG, \ 4328 IGNORE_RANGE, \ 4329 IGNORE_CONSTRAINT) 4330 4331// Extensions 4332 4333#include "runtime/globals_ext.hpp" 4334 4335#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 4336