globals.hpp revision 5357:510fbd28919c
1/* 2 * Copyright (c) 1997, 2013, 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 "utilities/debug.hpp" 29 30// use this for flags that are true per default in the tiered build 31// but false in non-tiered builds, and vice versa 32#ifdef TIERED 33#define trueInTiered true 34#define falseInTiered false 35#else 36#define trueInTiered false 37#define falseInTiered true 38#endif 39 40#ifdef TARGET_ARCH_x86 41# include "globals_x86.hpp" 42#endif 43#ifdef TARGET_ARCH_sparc 44# include "globals_sparc.hpp" 45#endif 46#ifdef TARGET_ARCH_zero 47# include "globals_zero.hpp" 48#endif 49#ifdef TARGET_ARCH_arm 50# include "globals_arm.hpp" 51#endif 52#ifdef TARGET_ARCH_ppc 53# include "globals_ppc.hpp" 54#endif 55#ifdef TARGET_OS_FAMILY_linux 56# include "globals_linux.hpp" 57#endif 58#ifdef TARGET_OS_FAMILY_solaris 59# include "globals_solaris.hpp" 60#endif 61#ifdef TARGET_OS_FAMILY_windows 62# include "globals_windows.hpp" 63#endif 64#ifdef TARGET_OS_FAMILY_bsd 65# include "globals_bsd.hpp" 66#endif 67#ifdef TARGET_OS_ARCH_linux_x86 68# include "globals_linux_x86.hpp" 69#endif 70#ifdef TARGET_OS_ARCH_linux_sparc 71# include "globals_linux_sparc.hpp" 72#endif 73#ifdef TARGET_OS_ARCH_linux_zero 74# include "globals_linux_zero.hpp" 75#endif 76#ifdef TARGET_OS_ARCH_solaris_x86 77# include "globals_solaris_x86.hpp" 78#endif 79#ifdef TARGET_OS_ARCH_solaris_sparc 80# include "globals_solaris_sparc.hpp" 81#endif 82#ifdef TARGET_OS_ARCH_windows_x86 83# include "globals_windows_x86.hpp" 84#endif 85#ifdef TARGET_OS_ARCH_linux_arm 86# include "globals_linux_arm.hpp" 87#endif 88#ifdef TARGET_OS_ARCH_linux_ppc 89# include "globals_linux_ppc.hpp" 90#endif 91#ifdef TARGET_OS_ARCH_bsd_x86 92# include "globals_bsd_x86.hpp" 93#endif 94#ifdef TARGET_OS_ARCH_bsd_zero 95# include "globals_bsd_zero.hpp" 96#endif 97#ifdef COMPILER1 98#ifdef TARGET_ARCH_x86 99# include "c1_globals_x86.hpp" 100#endif 101#ifdef TARGET_ARCH_sparc 102# include "c1_globals_sparc.hpp" 103#endif 104#ifdef TARGET_ARCH_arm 105# include "c1_globals_arm.hpp" 106#endif 107#ifdef TARGET_ARCH_ppc 108# include "c1_globals_ppc.hpp" 109#endif 110#ifdef TARGET_OS_FAMILY_linux 111# include "c1_globals_linux.hpp" 112#endif 113#ifdef TARGET_OS_FAMILY_solaris 114# include "c1_globals_solaris.hpp" 115#endif 116#ifdef TARGET_OS_FAMILY_windows 117# include "c1_globals_windows.hpp" 118#endif 119#ifdef TARGET_OS_FAMILY_bsd 120# include "c1_globals_bsd.hpp" 121#endif 122#endif 123#ifdef COMPILER2 124#ifdef TARGET_ARCH_x86 125# include "c2_globals_x86.hpp" 126#endif 127#ifdef TARGET_ARCH_sparc 128# include "c2_globals_sparc.hpp" 129#endif 130#ifdef TARGET_ARCH_arm 131# include "c2_globals_arm.hpp" 132#endif 133#ifdef TARGET_OS_FAMILY_linux 134# include "c2_globals_linux.hpp" 135#endif 136#ifdef TARGET_OS_FAMILY_solaris 137# include "c2_globals_solaris.hpp" 138#endif 139#ifdef TARGET_OS_FAMILY_windows 140# include "c2_globals_windows.hpp" 141#endif 142#ifdef TARGET_OS_FAMILY_bsd 143# include "c2_globals_bsd.hpp" 144#endif 145#endif 146#ifdef SHARK 147#ifdef TARGET_ARCH_zero 148# include "shark_globals_zero.hpp" 149#endif 150#endif 151 152#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) 153define_pd_global(bool, BackgroundCompilation, false); 154define_pd_global(bool, UseTLAB, false); 155define_pd_global(bool, CICompileOSR, false); 156define_pd_global(bool, UseTypeProfile, false); 157define_pd_global(bool, UseOnStackReplacement, false); 158define_pd_global(bool, InlineIntrinsics, false); 159define_pd_global(bool, PreferInterpreterNativeStubs, true); 160define_pd_global(bool, ProfileInterpreter, false); 161define_pd_global(bool, ProfileTraps, false); 162define_pd_global(bool, TieredCompilation, false); 163 164define_pd_global(intx, CompileThreshold, 0); 165define_pd_global(intx, BackEdgeThreshold, 0); 166 167define_pd_global(intx, OnStackReplacePercentage, 0); 168define_pd_global(bool, ResizeTLAB, false); 169define_pd_global(intx, FreqInlineSize, 0); 170define_pd_global(intx, InlineSmallCode, 0); 171define_pd_global(intx, NewSizeThreadIncrease, 4*K); 172define_pd_global(intx, InlineClassNatives, true); 173define_pd_global(intx, InlineUnsafeOps, true); 174define_pd_global(intx, InitialCodeCacheSize, 160*K); 175define_pd_global(intx, ReservedCodeCacheSize, 32*M); 176define_pd_global(intx, CodeCacheExpansionSize, 32*K); 177define_pd_global(intx, CodeCacheMinBlockLength, 1); 178define_pd_global(intx, CodeCacheMinimumUseSpace, 200*K); 179define_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M)); 180define_pd_global(bool, NeverActAsServerClassMachine, true); 181define_pd_global(uint64_t,MaxRAM, 1ULL*G); 182#define CI_COMPILER_COUNT 0 183#else 184 185#ifdef COMPILER2 186#define CI_COMPILER_COUNT 2 187#else 188#define CI_COMPILER_COUNT 1 189#endif // COMPILER2 190 191#endif // no compilers 192 193// string type aliases used only in this file 194typedef const char* ccstr; 195typedef const char* ccstrlist; // represents string arguments which accumulate 196 197struct Flag { 198 enum Flags { 199 // value origin 200 DEFAULT = 0, 201 COMMAND_LINE = 1, 202 ENVIRON_VAR = 2, 203 CONFIG_FILE = 3, 204 MANAGEMENT = 4, 205 ERGONOMIC = 5, 206 ATTACH_ON_DEMAND = 6, 207 INTERNAL = 7, 208 209 LAST_VALUE_ORIGIN = INTERNAL, 210 VALUE_ORIGIN_BITS = 4, 211 VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS), 212 213 // flag kind 214 KIND_PRODUCT = 1 << 4, 215 KIND_MANAGEABLE = 1 << 5, 216 KIND_DIAGNOSTIC = 1 << 6, 217 KIND_EXPERIMENTAL = 1 << 7, 218 KIND_NOT_PRODUCT = 1 << 8, 219 KIND_DEVELOP = 1 << 9, 220 KIND_PLATFORM_DEPENDENT = 1 << 10, 221 KIND_READ_WRITE = 1 << 11, 222 KIND_C1 = 1 << 12, 223 KIND_C2 = 1 << 13, 224 KIND_ARCH = 1 << 14, 225 KIND_SHARK = 1 << 15, 226 KIND_LP64_PRODUCT = 1 << 16, 227 KIND_COMMERCIAL = 1 << 17, 228 229 KIND_MASK = ~VALUE_ORIGIN_MASK 230 }; 231 232 const char* _type; 233 const char* _name; 234 void* _addr; 235 NOT_PRODUCT(const char* _doc;) 236 Flags _flags; 237 238 // points to all Flags static array 239 static Flag* flags; 240 241 // number of flags 242 static size_t numFlags; 243 244 static Flag* find_flag(const char* name, size_t length, bool allow_locked = false); 245 static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false); 246 247 void check_writable(); 248 249 bool is_bool() const; 250 bool get_bool() const; 251 void set_bool(bool value); 252 253 bool is_intx() const; 254 intx get_intx() const; 255 void set_intx(intx value); 256 257 bool is_uintx() const; 258 uintx get_uintx() const; 259 void set_uintx(uintx value); 260 261 bool is_uint64_t() const; 262 uint64_t get_uint64_t() const; 263 void set_uint64_t(uint64_t value); 264 265 bool is_double() const; 266 double get_double() const; 267 void set_double(double value); 268 269 bool is_ccstr() const; 270 bool ccstr_accumulates() const; 271 ccstr get_ccstr() const; 272 void set_ccstr(ccstr value); 273 274 Flags get_origin(); 275 void set_origin(Flags origin); 276 277 bool is_default(); 278 bool is_ergonomic(); 279 bool is_command_line(); 280 281 bool is_product() const; 282 bool is_manageable() const; 283 bool is_diagnostic() const; 284 bool is_experimental() const; 285 bool is_notproduct() const; 286 bool is_develop() const; 287 bool is_read_write() const; 288 bool is_commercial() const; 289 290 bool is_constant_in_binary() const; 291 292 bool is_unlocker() const; 293 bool is_unlocked() const; 294 bool is_writeable() const; 295 bool is_external() const; 296 297 bool is_unlocker_ext() const; 298 bool is_unlocked_ext() const; 299 bool is_writeable_ext() const; 300 bool is_external_ext() const; 301 302 void get_locked_message(char*, int) const; 303 void get_locked_message_ext(char*, int) const; 304 305 void print_on(outputStream* st, bool withComments = false ); 306 void print_kind(outputStream* st); 307 void print_as_flag(outputStream* st); 308}; 309 310// debug flags control various aspects of the VM and are global accessible 311 312// use FlagSetting to temporarily change some debug flag 313// e.g. FlagSetting fs(DebugThisAndThat, true); 314// restored to previous value upon leaving scope 315class FlagSetting { 316 bool val; 317 bool* flag; 318 public: 319 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 320 ~FlagSetting() { *flag = val; } 321}; 322 323 324class CounterSetting { 325 intx* counter; 326 public: 327 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 328 ~CounterSetting() { (*counter)--; } 329}; 330 331 332class UIntFlagSetting { 333 uintx val; 334 uintx* flag; 335 public: 336 UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; } 337 ~UIntFlagSetting() { *flag = val; } 338}; 339 340 341class DoubleFlagSetting { 342 double val; 343 double* flag; 344 public: 345 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 346 ~DoubleFlagSetting() { *flag = val; } 347}; 348 349 350class CommandLineFlags { 351 public: 352 static bool boolAt(char* name, size_t len, bool* value); 353 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } 354 static bool boolAtPut(char* name, size_t len, bool* value, Flag::Flags origin); 355 static bool boolAtPut(char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); } 356 357 static bool intxAt(char* name, size_t len, intx* value); 358 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } 359 static bool intxAtPut(char* name, size_t len, intx* value, Flag::Flags origin); 360 static bool intxAtPut(char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); } 361 362 static bool uintxAt(char* name, size_t len, uintx* value); 363 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } 364 static bool uintxAtPut(char* name, size_t len, uintx* value, Flag::Flags origin); 365 static bool uintxAtPut(char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); } 366 367 static bool uint64_tAt(char* name, size_t len, uint64_t* value); 368 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } 369 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, Flag::Flags origin); 370 static bool uint64_tAtPut(char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 371 372 static bool doubleAt(char* name, size_t len, double* value); 373 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } 374 static bool doubleAtPut(char* name, size_t len, double* value, Flag::Flags origin); 375 static bool doubleAtPut(char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); } 376 377 static bool ccstrAt(char* name, size_t len, ccstr* value); 378 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } 379 static bool ccstrAtPut(char* name, size_t len, ccstr* value, Flag::Flags origin); 380 static bool ccstrAtPut(char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); } 381 382 // Returns false if name is not a command line flag. 383 static bool wasSetOnCmdline(const char* name, bool* value); 384 static void printSetFlags(outputStream* out); 385 386 static void printFlags(outputStream* out, bool withComments); 387 388 static void verify() PRODUCT_RETURN; 389}; 390 391// use this for flags that are true by default in the debug version but 392// false in the optimized version, and vice versa 393#ifdef ASSERT 394#define trueInDebug true 395#define falseInDebug false 396#else 397#define trueInDebug false 398#define falseInDebug true 399#endif 400 401// use this for flags that are true per default in the product build 402// but false in development builds, and vice versa 403#ifdef PRODUCT 404#define trueInProduct true 405#define falseInProduct false 406#else 407#define trueInProduct false 408#define falseInProduct true 409#endif 410 411#ifdef JAVASE_EMBEDDED 412#define falseInEmbedded false 413#else 414#define falseInEmbedded true 415#endif 416 417// develop flags are settable / visible only during development and are constant in the PRODUCT version 418// product flags are always settable / visible 419// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 420 421// A flag must be declared with one of the following types: 422// bool, intx, uintx, ccstr. 423// The type "ccstr" is an alias for "const char*" and is used 424// only in this file, because the macrology requires single-token type names. 425 426// Note: Diagnostic options not meant for VM tuning or for product modes. 427// They are to be used for VM quality assurance or field diagnosis 428// of VM bugs. They are hidden so that users will not be encouraged to 429// try them as if they were VM ordinary execution options. However, they 430// are available in the product version of the VM. Under instruction 431// from support engineers, VM customers can turn them on to collect 432// diagnostic information about VM problems. To use a VM diagnostic 433// option, you must first specify +UnlockDiagnosticVMOptions. 434// (This master switch also affects the behavior of -Xprintflags.) 435// 436// experimental flags are in support of features that are not 437// part of the officially supported product, but are available 438// for experimenting with. They could, for example, be performance 439// features that may not have undergone full or rigorous QA, but which may 440// help performance in some cases and released for experimentation 441// by the community of users and developers. This flag also allows one to 442// be able to build a fully supported product that nonetheless also 443// ships with some unsupported, lightly tested, experimental features. 444// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 445// UnlockExperimentalVMOptions flag, which allows the control and 446// modification of the experimental flags. 447// 448// Nota bene: neither diagnostic nor experimental options should be used casually, 449// and they are not supported on production loads, except under explicit 450// direction from support engineers. 451// 452// manageable flags are writeable external product flags. 453// They are dynamically writeable through the JDK management interface 454// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 455// These flags are external exported interface (see CCC). The list of 456// manageable flags can be queried programmatically through the management 457// interface. 458// 459// A flag can be made as "manageable" only if 460// - the flag is defined in a CCC as an external exported interface. 461// - the VM implementation supports dynamic setting of the flag. 462// This implies that the VM must *always* query the flag variable 463// and not reuse state related to the flag state at any given time. 464// - you want the flag to be queried programmatically by the customers. 465// 466// product_rw flags are writeable internal product flags. 467// They are like "manageable" flags but for internal/private use. 468// The list of product_rw flags are internal/private flags which 469// may be changed/removed in a future release. It can be set 470// through the management interface to get/set value 471// when the name of flag is supplied. 472// 473// A flag can be made as "product_rw" only if 474// - the VM implementation supports dynamic setting of the flag. 475// This implies that the VM must *always* query the flag variable 476// and not reuse state related to the flag state at any given time. 477// 478// Note that when there is a need to support develop flags to be writeable, 479// it can be done in the same way as product_rw. 480 481#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ 482 \ 483 lp64_product(bool, UseCompressedOops, false, \ 484 "Use 32-bit object references in 64-bit VM " \ 485 "lp64_product means flag is always constant in 32 bit VM") \ 486 \ 487 lp64_product(bool, UseCompressedClassPointers, false, \ 488 "Use 32-bit class pointers in 64-bit VM " \ 489 "lp64_product means flag is always constant in 32 bit VM") \ 490 \ 491 notproduct(bool, CheckCompressedOops, true, \ 492 "generate checks in encoding/decoding code in debug VM") \ 493 \ 494 product_pd(uintx, HeapBaseMinAddress, \ 495 "OS specific low limit for heap base address") \ 496 \ 497 diagnostic(bool, PrintCompressedOopsMode, false, \ 498 "Print compressed oops base address and encoding mode") \ 499 \ 500 lp64_product(intx, ObjectAlignmentInBytes, 8, \ 501 "Default object alignment in bytes, 8 is minimum") \ 502 \ 503 product(bool, AssumeMP, false, \ 504 "Instruct the VM to assume multiple processors are available") \ 505 \ 506 /* UseMembar is theoretically a temp flag used for memory barrier \ 507 * removal testing. It was supposed to be removed before FCS but has \ 508 * been re-added (see 6401008) */ \ 509 product_pd(bool, UseMembar, \ 510 "(Unstable) Issues membars on thread state transitions") \ 511 \ 512 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ 513 * that don't support it. This will be replaced by processor detection \ 514 * logic. \ 515 */ \ 516 product(bool, UsePPCLWSYNC, true, \ 517 "Use lwsync instruction if true, else use slower sync") \ 518 \ 519 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ 520 "Whether to clean the chunk pool asynchronously") \ 521 \ 522 /* Temporary: See 6948537 */ \ 523 experimental(bool, UseMemSetInBOT, true, \ 524 "(Unstable) uses memset in BOT updates in GC code") \ 525 \ 526 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 527 "Enable normal processing of flags relating to field diagnostics")\ 528 \ 529 experimental(bool, UnlockExperimentalVMOptions, false, \ 530 "Enable normal processing of flags relating to experimental features")\ 531 \ 532 product(bool, JavaMonitorsInStackTrace, true, \ 533 "Print info. about Java monitor locks when the stacks are dumped")\ 534 \ 535 product_pd(bool, UseLargePages, \ 536 "Use large page memory") \ 537 \ 538 product_pd(bool, UseLargePagesIndividualAllocation, \ 539 "Allocate large pages individually for better affinity") \ 540 \ 541 develop(bool, LargePagesIndividualAllocationInjectError, false, \ 542 "Fail large pages individual allocation") \ 543 \ 544 develop(bool, TracePageSizes, false, \ 545 "Trace page size selection and usage.") \ 546 \ 547 product(bool, UseNUMA, false, \ 548 "Use NUMA if available") \ 549 \ 550 product(bool, UseNUMAInterleaving, false, \ 551 "Interleave memory across NUMA nodes if available") \ 552 \ 553 product(uintx, NUMAInterleaveGranularity, 2*M, \ 554 "Granularity to use for NUMA interleaving on Windows OS") \ 555 \ 556 product(bool, ForceNUMA, false, \ 557 "Force NUMA optimizations on single-node/UMA systems") \ 558 \ 559 product(uintx, NUMAChunkResizeWeight, 20, \ 560 "Percentage (0-100) used to weigh the current sample when " \ 561 "computing exponentially decaying average for " \ 562 "AdaptiveNUMAChunkSizing") \ 563 \ 564 product(uintx, NUMASpaceResizeRate, 1*G, \ 565 "Do not reallocate more that this amount per collection") \ 566 \ 567 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 568 "Enable adaptive chunk sizing for NUMA") \ 569 \ 570 product(bool, NUMAStats, false, \ 571 "Print NUMA stats in detailed heap information") \ 572 \ 573 product(uintx, NUMAPageScanRate, 256, \ 574 "Maximum number of pages to include in the page scan procedure") \ 575 \ 576 product_pd(bool, NeedsDeoptSuspend, \ 577 "True for register window machines (sparc/ia64)") \ 578 \ 579 product(intx, UseSSE, 99, \ 580 "Highest supported SSE instructions set on x86/x64") \ 581 \ 582 product(bool, UseAES, false, \ 583 "Control whether AES instructions can be used on x86/x64") \ 584 \ 585 product(uintx, LargePageSizeInBytes, 0, \ 586 "Large page size (0 to let VM choose the page size") \ 587 \ 588 product(uintx, LargePageHeapSizeThreshold, 128*M, \ 589 "Use large pages if max heap is at least this big") \ 590 \ 591 product(bool, ForceTimeHighResolution, false, \ 592 "Using high time resolution(For Win32 only)") \ 593 \ 594 develop(bool, TraceItables, false, \ 595 "Trace initialization and use of itables") \ 596 \ 597 develop(bool, TracePcPatching, false, \ 598 "Trace usage of frame::patch_pc") \ 599 \ 600 develop(bool, TraceJumps, false, \ 601 "Trace assembly jumps in thread ring buffer") \ 602 \ 603 develop(bool, TraceRelocator, false, \ 604 "Trace the bytecode relocator") \ 605 \ 606 develop(bool, TraceLongCompiles, false, \ 607 "Print out every time compilation is longer than " \ 608 "a given threashold") \ 609 \ 610 develop(bool, SafepointALot, false, \ 611 "Generates a lot of safepoints. Works with " \ 612 "GuaranteedSafepointInterval") \ 613 \ 614 product_pd(bool, BackgroundCompilation, \ 615 "A thread requesting compilation is not blocked during " \ 616 "compilation") \ 617 \ 618 product(bool, PrintVMQWaitTime, false, \ 619 "Prints out the waiting time in VM operation queue") \ 620 \ 621 develop(bool, NoYieldsInMicrolock, false, \ 622 "Disable yields in microlock") \ 623 \ 624 develop(bool, TraceOopMapGeneration, false, \ 625 "Shows oopmap generation") \ 626 \ 627 product(bool, MethodFlushing, true, \ 628 "Reclamation of zombie and not-entrant methods") \ 629 \ 630 develop(bool, VerifyStack, false, \ 631 "Verify stack of each thread when it is entering a runtime call") \ 632 \ 633 diagnostic(bool, ForceUnreachable, false, \ 634 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ 635 \ 636 notproduct(bool, StressDerivedPointers, false, \ 637 "Force scavenge when a derived pointers is detected on stack " \ 638 "after rtm call") \ 639 \ 640 develop(bool, TraceDerivedPointers, false, \ 641 "Trace traversal of derived pointers on stack") \ 642 \ 643 notproduct(bool, TraceCodeBlobStacks, false, \ 644 "Trace stack-walk of codeblobs") \ 645 \ 646 product(bool, PrintJNIResolving, false, \ 647 "Used to implement -v:jni") \ 648 \ 649 notproduct(bool, PrintRewrites, false, \ 650 "Print methods that are being rewritten") \ 651 \ 652 product(bool, UseInlineCaches, true, \ 653 "Use Inline Caches for virtual calls ") \ 654 \ 655 develop(bool, InlineArrayCopy, true, \ 656 "inline arraycopy native that is known to be part of " \ 657 "base library DLL") \ 658 \ 659 develop(bool, InlineObjectHash, true, \ 660 "inline Object::hashCode() native that is known to be part " \ 661 "of base library DLL") \ 662 \ 663 develop(bool, InlineNatives, true, \ 664 "inline natives that are known to be part of base library DLL") \ 665 \ 666 develop(bool, InlineMathNatives, true, \ 667 "inline SinD, CosD, etc.") \ 668 \ 669 develop(bool, InlineClassNatives, true, \ 670 "inline Class.isInstance, etc") \ 671 \ 672 develop(bool, InlineThreadNatives, true, \ 673 "inline Thread.currentThread, etc") \ 674 \ 675 develop(bool, InlineUnsafeOps, true, \ 676 "inline memory ops (native methods) from sun.misc.Unsafe") \ 677 \ 678 product(bool, CriticalJNINatives, true, \ 679 "check for critical JNI entry points") \ 680 \ 681 notproduct(bool, StressCriticalJNINatives, false, \ 682 "Exercise register saving code in critical natives") \ 683 \ 684 product(bool, UseSSE42Intrinsics, false, \ 685 "SSE4.2 versions of intrinsics") \ 686 \ 687 product(bool, UseAESIntrinsics, false, \ 688 "use intrinsics for AES versions of crypto") \ 689 \ 690 product(bool, UseCRC32Intrinsics, false, \ 691 "use intrinsics for java.util.zip.CRC32") \ 692 \ 693 develop(bool, TraceCallFixup, false, \ 694 "traces all call fixups") \ 695 \ 696 develop(bool, DeoptimizeALot, false, \ 697 "deoptimize at every exit from the runtime system") \ 698 \ 699 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 700 "a comma separated list of bcis to deoptimize at") \ 701 \ 702 product(bool, DeoptimizeRandom, false, \ 703 "deoptimize random frames on random exit from the runtime system")\ 704 \ 705 notproduct(bool, ZombieALot, false, \ 706 "creates zombies (non-entrant) at exit from the runt. system") \ 707 \ 708 product(bool, UnlinkSymbolsALot, false, \ 709 "unlink unreferenced symbols from the symbol table at safepoints")\ 710 \ 711 notproduct(bool, WalkStackALot, false, \ 712 "trace stack (no print) at every exit from the runtime system") \ 713 \ 714 product(bool, Debugging, false, \ 715 "set when executing debug methods in debug.ccp " \ 716 "(to prevent triggering assertions)") \ 717 \ 718 notproduct(bool, StrictSafepointChecks, trueInDebug, \ 719 "Enable strict checks that safepoints cannot happen for threads " \ 720 "that used No_Safepoint_Verifier") \ 721 \ 722 notproduct(bool, VerifyLastFrame, false, \ 723 "Verify oops on last frame on entry to VM") \ 724 \ 725 develop(bool, TraceHandleAllocation, false, \ 726 "Prints out warnings when suspicious many handles are allocated") \ 727 \ 728 product(bool, UseCompilerSafepoints, true, \ 729 "Stop at safepoints in compiled code") \ 730 \ 731 product(bool, FailOverToOldVerifier, true, \ 732 "fail over to old verifier when split verifier fails") \ 733 \ 734 develop(bool, ShowSafepointMsgs, false, \ 735 "Show msg. about safepoint synch.") \ 736 \ 737 product(bool, SafepointTimeout, false, \ 738 "Time out and warn or fail after SafepointTimeoutDelay " \ 739 "milliseconds if failed to reach safepoint") \ 740 \ 741 develop(bool, DieOnSafepointTimeout, false, \ 742 "Die upon failure to reach safepoint (see SafepointTimeout)") \ 743 \ 744 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 745 /* typically, at most a few retries are needed */ \ 746 product(intx, SuspendRetryCount, 50, \ 747 "Maximum retry count for an external suspend request") \ 748 \ 749 product(intx, SuspendRetryDelay, 5, \ 750 "Milliseconds to delay per retry (* current_retry_count)") \ 751 \ 752 product(bool, AssertOnSuspendWaitFailure, false, \ 753 "Assert/Guarantee on external suspend wait failure") \ 754 \ 755 product(bool, TraceSuspendWaitFailures, false, \ 756 "Trace external suspend wait failures") \ 757 \ 758 product(bool, MaxFDLimit, true, \ 759 "Bump the number of file descriptors to max in solaris.") \ 760 \ 761 diagnostic(bool, LogEvents, true, \ 762 "Enable the various ring buffer event logs") \ 763 \ 764 diagnostic(uintx, LogEventsBufferEntries, 10, \ 765 "Enable the various ring buffer event logs") \ 766 \ 767 product(bool, BytecodeVerificationRemote, true, \ 768 "Enables the Java bytecode verifier for remote classes") \ 769 \ 770 product(bool, BytecodeVerificationLocal, false, \ 771 "Enables the Java bytecode verifier for local classes") \ 772 \ 773 develop(bool, ForceFloatExceptions, trueInDebug, \ 774 "Force exceptions on FP stack under/overflow") \ 775 \ 776 develop(bool, VerifyStackAtCalls, false, \ 777 "Verify that the stack pointer is unchanged after calls") \ 778 \ 779 develop(bool, TraceJavaAssertions, false, \ 780 "Trace java language assertions") \ 781 \ 782 notproduct(bool, CheckAssertionStatusDirectives, false, \ 783 "temporary - see javaClasses.cpp") \ 784 \ 785 notproduct(bool, PrintMallocFree, false, \ 786 "Trace calls to C heap malloc/free allocation") \ 787 \ 788 product(bool, PrintOopAddress, false, \ 789 "Always print the location of the oop") \ 790 \ 791 notproduct(bool, VerifyCodeCacheOften, false, \ 792 "Verify compiled-code cache often") \ 793 \ 794 develop(bool, ZapDeadCompiledLocals, false, \ 795 "Zap dead locals in compiler frames") \ 796 \ 797 notproduct(bool, ZapDeadLocalsOld, false, \ 798 "Zap dead locals (old version, zaps all frames when " \ 799 "entering the VM") \ 800 \ 801 notproduct(bool, CheckOopishValues, false, \ 802 "Warn if value contains oop ( requires ZapDeadLocals)") \ 803 \ 804 develop(bool, UseMallocOnly, false, \ 805 "use only malloc/free for allocation (no resource area/arena)") \ 806 \ 807 develop(bool, PrintMalloc, false, \ 808 "print all malloc/free calls") \ 809 \ 810 develop(bool, PrintMallocStatistics, false, \ 811 "print malloc/free statistics") \ 812 \ 813 develop(bool, ZapResourceArea, trueInDebug, \ 814 "Zap freed resource/arena space with 0xABABABAB") \ 815 \ 816 notproduct(bool, ZapVMHandleArea, trueInDebug, \ 817 "Zap freed VM handle space with 0xBCBCBCBC") \ 818 \ 819 develop(bool, ZapJNIHandleArea, trueInDebug, \ 820 "Zap freed JNI handle space with 0xFEFEFEFE") \ 821 \ 822 notproduct(bool, ZapStackSegments, trueInDebug, \ 823 "Zap allocated/freed Stack segments with 0xFADFADED") \ 824 \ 825 develop(bool, ZapUnusedHeapArea, trueInDebug, \ 826 "Zap unused heap space with 0xBAADBABE") \ 827 \ 828 develop(bool, TraceZapUnusedHeapArea, false, \ 829 "Trace zapping of unused heap space") \ 830 \ 831 develop(bool, CheckZapUnusedHeapArea, false, \ 832 "Check zapping of unused heap space") \ 833 \ 834 develop(bool, ZapFillerObjects, trueInDebug, \ 835 "Zap filler objects with 0xDEAFBABE") \ 836 \ 837 develop(bool, PrintVMMessages, true, \ 838 "Print vm messages on console") \ 839 \ 840 product(bool, PrintGCApplicationConcurrentTime, false, \ 841 "Print the time the application has been running") \ 842 \ 843 product(bool, PrintGCApplicationStoppedTime, false, \ 844 "Print the time the application has been stopped") \ 845 \ 846 diagnostic(bool, VerboseVerification, false, \ 847 "Display detailed verification details") \ 848 \ 849 notproduct(uintx, ErrorHandlerTest, 0, \ 850 "If > 0, provokes an error after VM initialization; the value" \ 851 "determines which error to provoke. See test_error_handler()" \ 852 "in debug.cpp.") \ 853 \ 854 develop(bool, Verbose, false, \ 855 "Prints additional debugging information from other modes") \ 856 \ 857 develop(bool, PrintMiscellaneous, false, \ 858 "Prints uncategorized debugging information (requires +Verbose)") \ 859 \ 860 develop(bool, WizardMode, false, \ 861 "Prints much more debugging information") \ 862 \ 863 product(bool, ShowMessageBoxOnError, false, \ 864 "Keep process alive on VM fatal error") \ 865 \ 866 product(bool, CreateMinidumpOnCrash, false, \ 867 "Create minidump on VM fatal error") \ 868 \ 869 product_pd(bool, UseOSErrorReporting, \ 870 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 871 \ 872 product(bool, SuppressFatalErrorMessage, false, \ 873 "Do NO Fatal Error report [Avoid deadlock]") \ 874 \ 875 product(ccstrlist, OnError, "", \ 876 "Run user-defined commands on fatal error; see VMError.cpp " \ 877 "for examples") \ 878 \ 879 product(ccstrlist, OnOutOfMemoryError, "", \ 880 "Run user-defined commands on first java.lang.OutOfMemoryError") \ 881 \ 882 manageable(bool, HeapDumpBeforeFullGC, false, \ 883 "Dump heap to file before any major stop-world GC") \ 884 \ 885 manageable(bool, HeapDumpAfterFullGC, false, \ 886 "Dump heap to file after any major stop-world GC") \ 887 \ 888 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 889 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 890 \ 891 manageable(ccstr, HeapDumpPath, NULL, \ 892 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ 893 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ 894 "in the working directory)") \ 895 \ 896 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ 897 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 898 "when the heap usage is larger than this") \ 899 \ 900 develop(uintx, HeapDumpSegmentSize, 1*G, \ 901 "Approximate segment size when generating a segmented heap dump") \ 902 \ 903 develop(bool, BreakAtWarning, false, \ 904 "Execute breakpoint upon encountering VM warning") \ 905 \ 906 develop(bool, TraceVMOperation, false, \ 907 "Trace vm operations") \ 908 \ 909 develop(bool, UseFakeTimers, false, \ 910 "Tells whether the VM should use system time or a fake timer") \ 911 \ 912 product(ccstr, NativeMemoryTracking, "off", \ 913 "Native memory tracking options") \ 914 \ 915 diagnostic(bool, PrintNMTStatistics, false, \ 916 "Print native memory tracking summary data if it is on") \ 917 \ 918 diagnostic(bool, AutoShutdownNMT, true, \ 919 "Automatically shutdown native memory tracking under stress " \ 920 "situation. When set to false, native memory tracking tries to " \ 921 "stay alive at the expense of JVM performance") \ 922 \ 923 diagnostic(bool, LogCompilation, false, \ 924 "Log compilation activity in detail to LogFile") \ 925 \ 926 product(bool, PrintCompilation, false, \ 927 "Print compilations") \ 928 \ 929 diagnostic(bool, TraceNMethodInstalls, false, \ 930 "Trace nmethod intallation") \ 931 \ 932 diagnostic(intx, ScavengeRootsInCode, 2, \ 933 "0: do not allow scavengable oops in the code cache; " \ 934 "1: allow scavenging from the code cache; " \ 935 "2: emit as many constants as the compiler can see") \ 936 \ 937 product(bool, AlwaysRestoreFPU, false, \ 938 "Restore the FPU control word after every JNI call (expensive)") \ 939 \ 940 diagnostic(bool, PrintCompilation2, false, \ 941 "Print additional statistics per compilation") \ 942 \ 943 diagnostic(bool, PrintAdapterHandlers, false, \ 944 "Print code generated for i2c/c2i adapters") \ 945 \ 946 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 947 "Verify that i2c/c2i adapters are called properly") \ 948 \ 949 develop(bool, VerifyAdapterSharing, false, \ 950 "Verify that the code for shared adapters is the equivalent") \ 951 \ 952 diagnostic(bool, PrintAssembly, false, \ 953 "Print assembly code (using external disassembler.so)") \ 954 \ 955 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 956 "Options string passed to disassembler.so") \ 957 \ 958 diagnostic(bool, PrintNMethods, false, \ 959 "Print assembly code for nmethods when generated") \ 960 \ 961 diagnostic(bool, PrintNativeNMethods, false, \ 962 "Print assembly code for native nmethods when generated") \ 963 \ 964 develop(bool, PrintDebugInfo, false, \ 965 "Print debug information for all nmethods when generated") \ 966 \ 967 develop(bool, PrintRelocations, false, \ 968 "Print relocation information for all nmethods when generated") \ 969 \ 970 develop(bool, PrintDependencies, false, \ 971 "Print dependency information for all nmethods when generated") \ 972 \ 973 develop(bool, PrintExceptionHandlers, false, \ 974 "Print exception handler tables for all nmethods when generated") \ 975 \ 976 develop(bool, StressCompiledExceptionHandlers, false, \ 977 "Exercise compiled exception handlers") \ 978 \ 979 develop(bool, InterceptOSException, false, \ 980 "Starts debugger when an implicit OS (e.g., NULL) " \ 981 "exception happens") \ 982 \ 983 product(bool, PrintCodeCache, false, \ 984 "Print the code cache memory usage when exiting") \ 985 \ 986 develop(bool, PrintCodeCache2, false, \ 987 "Print detailed usage info on the code cache when exiting") \ 988 \ 989 product(bool, PrintCodeCacheOnCompilation, false, \ 990 "Print the code cache memory usage each time a method is compiled") \ 991 \ 992 diagnostic(bool, PrintStubCode, false, \ 993 "Print generated stub code") \ 994 \ 995 product(bool, StackTraceInThrowable, true, \ 996 "Collect backtrace in throwable when exception happens") \ 997 \ 998 product(bool, OmitStackTraceInFastThrow, true, \ 999 "Omit backtraces for some 'hot' exceptions in optimized code") \ 1000 \ 1001 product(bool, ProfilerPrintByteCodeStatistics, false, \ 1002 "Prints byte code statictics when dumping profiler output") \ 1003 \ 1004 product(bool, ProfilerRecordPC, false, \ 1005 "Collects tick for each 16 byte interval of compiled code") \ 1006 \ 1007 product(bool, ProfileVM, false, \ 1008 "Profiles ticks that fall within VM (either in the VM Thread " \ 1009 "or VM code called through stubs)") \ 1010 \ 1011 product(bool, ProfileIntervals, false, \ 1012 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ 1013 \ 1014 notproduct(bool, ProfilerCheckIntervals, false, \ 1015 "Collect and print info on spacing of profiler ticks") \ 1016 \ 1017 develop(bool, PrintJVMWarnings, false, \ 1018 "Prints warnings for unimplemented JVM functions") \ 1019 \ 1020 product(bool, PrintWarnings, true, \ 1021 "Prints JVM warnings to output stream") \ 1022 \ 1023 notproduct(uintx, WarnOnStalledSpinLock, 0, \ 1024 "Prints warnings for stalled SpinLocks") \ 1025 \ 1026 product(bool, RegisterFinalizersAtInit, true, \ 1027 "Register finalizable objects at end of Object.<init> or " \ 1028 "after allocation") \ 1029 \ 1030 develop(bool, RegisterReferences, true, \ 1031 "Tells whether the VM should register soft/weak/final/phantom " \ 1032 "references") \ 1033 \ 1034 develop(bool, IgnoreRewrites, false, \ 1035 "Supress rewrites of bytecodes in the oopmap generator. " \ 1036 "This is unsafe!") \ 1037 \ 1038 develop(bool, PrintCodeCacheExtension, false, \ 1039 "Print extension of code cache") \ 1040 \ 1041 develop(bool, UsePrivilegedStack, true, \ 1042 "Enable the security JVM functions") \ 1043 \ 1044 develop(bool, ProtectionDomainVerification, true, \ 1045 "Verifies protection domain before resolution in system " \ 1046 "dictionary") \ 1047 \ 1048 product(bool, ClassUnloading, true, \ 1049 "Do unloading of classes") \ 1050 \ 1051 develop(bool, DisableStartThread, false, \ 1052 "Disable starting of additional Java threads " \ 1053 "(for debugging only)") \ 1054 \ 1055 develop(bool, MemProfiling, false, \ 1056 "Write memory usage profiling to log file") \ 1057 \ 1058 notproduct(bool, PrintSystemDictionaryAtExit, false, \ 1059 "Prints the system dictionary at exit") \ 1060 \ 1061 experimental(intx, PredictedLoadedClassCount, 0, \ 1062 "Experimental: Tune loaded class cache starting size.") \ 1063 \ 1064 diagnostic(bool, UnsyncloadClass, false, \ 1065 "Unstable: VM calls loadClass unsynchronized. Custom " \ 1066 "class loader must call VM synchronized for findClass " \ 1067 "and defineClass.") \ 1068 \ 1069 product(bool, AlwaysLockClassLoader, false, \ 1070 "Require the VM to acquire the class loader lock before calling " \ 1071 "loadClass() even for class loaders registering " \ 1072 "as parallel capable") \ 1073 \ 1074 product(bool, AllowParallelDefineClass, false, \ 1075 "Allow parallel defineClass requests for class loaders " \ 1076 "registering as parallel capable") \ 1077 \ 1078 product(bool, MustCallLoadClassInternal, false, \ 1079 "Call loadClassInternal() rather than loadClass()") \ 1080 \ 1081 product_pd(bool, DontYieldALot, \ 1082 "Throw away obvious excess yield calls (for SOLARIS only)") \ 1083 \ 1084 product_pd(bool, ConvertSleepToYield, \ 1085 "Converts sleep(0) to thread yield " \ 1086 "(may be off for SOLARIS to improve GUI)") \ 1087 \ 1088 product(bool, ConvertYieldToSleep, false, \ 1089 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ 1090 "behavior (SOLARIS only)") \ 1091 \ 1092 product(bool, UseBoundThreads, true, \ 1093 "Bind user level threads to kernel threads (for SOLARIS only)") \ 1094 \ 1095 develop(bool, UseDetachedThreads, true, \ 1096 "Use detached threads that are recycled upon termination " \ 1097 "(for SOLARIS only)") \ 1098 \ 1099 product(bool, UseLWPSynchronization, true, \ 1100 "Use LWP-based instead of libthread-based synchronization " \ 1101 "(SPARC only)") \ 1102 \ 1103 product(ccstr, SyncKnobs, NULL, \ 1104 "(Unstable) Various monitor synchronization tunables") \ 1105 \ 1106 product(intx, EmitSync, 0, \ 1107 "(Unsafe,Unstable) " \ 1108 " Controls emission of inline sync fast-path code") \ 1109 \ 1110 product(intx, MonitorBound, 0, "Bound Monitor population") \ 1111 \ 1112 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ 1113 \ 1114 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ 1115 \ 1116 product(intx, SyncVerbose, 0, "(Unstable)" ) \ 1117 \ 1118 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ 1119 \ 1120 product(intx, hashCode, 5, \ 1121 "(Unstable) select hashCode generation algorithm" ) \ 1122 \ 1123 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ 1124 "(Unstable, Linux-specific)" \ 1125 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ 1126 \ 1127 product(bool, FilterSpuriousWakeups, true, \ 1128 "Prevent spurious or premature wakeups from object.wait " \ 1129 "(Solaris only)") \ 1130 \ 1131 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ 1132 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ 1133 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ 1134 \ 1135 develop(bool, UsePthreads, false, \ 1136 "Use pthread-based instead of libthread-based synchronization " \ 1137 "(SPARC only)") \ 1138 \ 1139 product(bool, AdjustConcurrency, false, \ 1140 "call thr_setconcurrency at thread create time to avoid " \ 1141 "LWP starvation on MP systems (For Solaris Only)") \ 1142 \ 1143 product(bool, ReduceSignalUsage, false, \ 1144 "Reduce the use of OS signals in Java and/or the VM") \ 1145 \ 1146 develop_pd(bool, ShareVtableStubs, \ 1147 "Share vtable stubs (smaller code but worse branch prediction") \ 1148 \ 1149 develop(bool, LoadLineNumberTables, true, \ 1150 "Tells whether the class file parser loads line number tables") \ 1151 \ 1152 develop(bool, LoadLocalVariableTables, true, \ 1153 "Tells whether the class file parser loads local variable tables")\ 1154 \ 1155 develop(bool, LoadLocalVariableTypeTables, true, \ 1156 "Tells whether the class file parser loads local variable type tables")\ 1157 \ 1158 product(bool, AllowUserSignalHandlers, false, \ 1159 "Do not complain if the application installs signal handlers " \ 1160 "(Solaris & Linux only)") \ 1161 \ 1162 product(bool, UseSignalChaining, true, \ 1163 "Use signal-chaining to invoke signal handlers installed " \ 1164 "by the application (Solaris & Linux only)") \ 1165 \ 1166 product(bool, UseAltSigs, false, \ 1167 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 1168 "internal signals (Solaris only)") \ 1169 \ 1170 product(bool, AllowJNIEnvProxy, false, \ 1171 "Allow JNIEnv proxies for jdbx") \ 1172 \ 1173 product(bool, JNIDetachReleasesMonitors, true, \ 1174 "JNI DetachCurrentThread releases monitors owned by thread") \ 1175 \ 1176 product(bool, RestoreMXCSROnJNICalls, false, \ 1177 "Restore MXCSR when returning from JNI calls") \ 1178 \ 1179 product(bool, CheckJNICalls, false, \ 1180 "Verify all arguments to JNI calls") \ 1181 \ 1182 product(bool, UseFastJNIAccessors, true, \ 1183 "Use optimized versions of Get<Primitive>Field") \ 1184 \ 1185 product(bool, EagerXrunInit, false, \ 1186 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 1187 " but not all -Xrun libraries may support the state of the VM at this time") \ 1188 \ 1189 product(bool, PreserveAllAnnotations, false, \ 1190 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ 1191 \ 1192 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 1193 "Number of OutOfMemoryErrors preallocated with backtrace") \ 1194 \ 1195 product(bool, LazyBootClassLoader, true, \ 1196 "Enable/disable lazy opening of boot class path entries") \ 1197 \ 1198 product(bool, UseXMMForArrayCopy, false, \ 1199 "Use SSE2 MOVQ instruction for Arraycopy") \ 1200 \ 1201 product(intx, FieldsAllocationStyle, 1, \ 1202 "0 - type based with oops first, 1 - with oops last, " \ 1203 "2 - oops in super and sub classes are together") \ 1204 \ 1205 product(bool, CompactFields, true, \ 1206 "Allocate nonstatic fields in gaps between previous fields") \ 1207 \ 1208 notproduct(bool, PrintFieldLayout, false, \ 1209 "Print field layout for each class") \ 1210 \ 1211 product(intx, ContendedPaddingWidth, 128, \ 1212 "How many bytes to pad the fields/classes marked @Contended with")\ 1213 \ 1214 product(bool, EnableContended, true, \ 1215 "Enable @Contended annotation support") \ 1216 \ 1217 product(bool, RestrictContended, true, \ 1218 "Restrict @Contended to trusted classes") \ 1219 \ 1220 product(bool, UseBiasedLocking, true, \ 1221 "Enable biased locking in JVM") \ 1222 \ 1223 product(intx, BiasedLockingStartupDelay, 4000, \ 1224 "Number of milliseconds to wait before enabling biased locking") \ 1225 \ 1226 diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1227 "Print statistics of biased locking in JVM") \ 1228 \ 1229 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1230 "Threshold of number of revocations per type to try to " \ 1231 "rebias all objects in the heap of that type") \ 1232 \ 1233 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1234 "Threshold of number of revocations per type to permanently " \ 1235 "revoke biases of all objects in the heap of that type") \ 1236 \ 1237 product(intx, BiasedLockingDecayTime, 25000, \ 1238 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1239 "type after previous bulk rebias") \ 1240 \ 1241 /* tracing */ \ 1242 \ 1243 notproduct(bool, TraceRuntimeCalls, false, \ 1244 "Trace run-time calls") \ 1245 \ 1246 develop(bool, TraceJNICalls, false, \ 1247 "Trace JNI calls") \ 1248 \ 1249 notproduct(bool, TraceJVMCalls, false, \ 1250 "Trace JVM calls") \ 1251 \ 1252 product(ccstr, TraceJVMTI, NULL, \ 1253 "Trace flags for JVMTI functions and events") \ 1254 \ 1255 /* This option can change an EMCP method into an obsolete method. */ \ 1256 /* This can affect tests that except specific methods to be EMCP. */ \ 1257 /* This option should be used with caution. */ \ 1258 product(bool, StressLdcRewrite, false, \ 1259 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1260 \ 1261 product(intx, TraceRedefineClasses, 0, \ 1262 "Trace level for JVMTI RedefineClasses") \ 1263 \ 1264 develop(bool, StressMethodComparator, false, \ 1265 "run the MethodComparator on all loaded methods") \ 1266 \ 1267 /* change to false by default sometime after Mustang */ \ 1268 product(bool, VerifyMergedCPBytecodes, true, \ 1269 "Verify bytecodes after RedefineClasses constant pool merging") \ 1270 \ 1271 develop(bool, TraceJNIHandleAllocation, false, \ 1272 "Trace allocation/deallocation of JNI handle blocks") \ 1273 \ 1274 develop(bool, TraceThreadEvents, false, \ 1275 "Trace all thread events") \ 1276 \ 1277 develop(bool, TraceBytecodes, false, \ 1278 "Trace bytecode execution") \ 1279 \ 1280 develop(bool, TraceClassInitialization, false, \ 1281 "Trace class initialization") \ 1282 \ 1283 develop(bool, TraceExceptions, false, \ 1284 "Trace exceptions") \ 1285 \ 1286 develop(bool, TraceICs, false, \ 1287 "Trace inline cache changes") \ 1288 \ 1289 notproduct(bool, TraceInvocationCounterOverflow, false, \ 1290 "Trace method invocation counter overflow") \ 1291 \ 1292 develop(bool, TraceInlineCacheClearing, false, \ 1293 "Trace clearing of inline caches in nmethods") \ 1294 \ 1295 develop(bool, TraceDependencies, false, \ 1296 "Trace dependencies") \ 1297 \ 1298 develop(bool, VerifyDependencies, trueInDebug, \ 1299 "Exercise and verify the compilation dependency mechanism") \ 1300 \ 1301 develop(bool, TraceNewOopMapGeneration, false, \ 1302 "Trace OopMapGeneration") \ 1303 \ 1304 develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1305 "Trace OopMapGeneration: print detailed cell states") \ 1306 \ 1307 develop(bool, TimeOopMap, false, \ 1308 "Time calls to GenerateOopMap::compute_map() in sum") \ 1309 \ 1310 develop(bool, TimeOopMap2, false, \ 1311 "Time calls to GenerateOopMap::compute_map() individually") \ 1312 \ 1313 develop(bool, TraceMonitorMismatch, false, \ 1314 "Trace monitor matching failures during OopMapGeneration") \ 1315 \ 1316 develop(bool, TraceOopMapRewrites, false, \ 1317 "Trace rewritting of method oops during oop map generation") \ 1318 \ 1319 develop(bool, TraceSafepoint, false, \ 1320 "Trace safepoint operations") \ 1321 \ 1322 develop(bool, TraceICBuffer, false, \ 1323 "Trace usage of IC buffer") \ 1324 \ 1325 develop(bool, TraceCompiledIC, false, \ 1326 "Trace changes of compiled IC") \ 1327 \ 1328 notproduct(bool, TraceZapDeadLocals, false, \ 1329 "Trace zapping dead locals") \ 1330 \ 1331 develop(bool, TraceStartupTime, false, \ 1332 "Trace setup time") \ 1333 \ 1334 develop(bool, TraceProtectionDomainVerification, false, \ 1335 "Trace protection domain verifcation") \ 1336 \ 1337 develop(bool, TraceClearedExceptions, false, \ 1338 "Prints when an exception is forcibly cleared") \ 1339 \ 1340 product(bool, TraceClassResolution, false, \ 1341 "Trace all constant pool resolutions (for debugging)") \ 1342 \ 1343 product(bool, TraceBiasedLocking, false, \ 1344 "Trace biased locking in JVM") \ 1345 \ 1346 product(bool, TraceMonitorInflation, false, \ 1347 "Trace monitor inflation in JVM") \ 1348 \ 1349 /* gc */ \ 1350 \ 1351 product(bool, UseSerialGC, false, \ 1352 "Use the serial garbage collector") \ 1353 \ 1354 product(bool, UseG1GC, false, \ 1355 "Use the Garbage-First garbage collector") \ 1356 \ 1357 product(bool, UseParallelGC, false, \ 1358 "Use the Parallel Scavenge garbage collector") \ 1359 \ 1360 product(bool, UseParallelOldGC, false, \ 1361 "Use the Parallel Old garbage collector") \ 1362 \ 1363 product(uintx, HeapMaximumCompactionInterval, 20, \ 1364 "How often should we maximally compact the heap (not allowing " \ 1365 "any dead space)") \ 1366 \ 1367 product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1368 "The collection count for the first maximum compaction") \ 1369 \ 1370 product(bool, UseMaximumCompactionOnSystemGC, true, \ 1371 "In the Parallel Old garbage collector maximum compaction for " \ 1372 "a system GC") \ 1373 \ 1374 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1375 "The mean used by the par compact dead wood" \ 1376 "limiter (a number between 0-100).") \ 1377 \ 1378 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1379 "The standard deviation used by the par compact dead wood" \ 1380 "limiter (a number between 0-100).") \ 1381 \ 1382 product(uintx, ParallelGCThreads, 0, \ 1383 "Number of parallel threads parallel gc will use") \ 1384 \ 1385 product(bool, UseDynamicNumberOfGCThreads, false, \ 1386 "Dynamically choose the number of parallel threads " \ 1387 "parallel gc will use") \ 1388 \ 1389 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 1390 "Force dynamic selection of the number of" \ 1391 "parallel threads parallel gc will use to aid debugging") \ 1392 \ 1393 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 1394 "Size of heap (bytes) per GC thread used in calculating the " \ 1395 "number of GC threads") \ 1396 \ 1397 product(bool, TraceDynamicGCThreads, false, \ 1398 "Trace the dynamic GC thread usage") \ 1399 \ 1400 develop(bool, ParallelOldGCSplitALot, false, \ 1401 "Provoke splitting (copying data from a young gen space to" \ 1402 "multiple destination spaces)") \ 1403 \ 1404 develop(uintx, ParallelOldGCSplitInterval, 3, \ 1405 "How often to provoke splitting a young gen space") \ 1406 \ 1407 product(uintx, ConcGCThreads, 0, \ 1408 "Number of threads concurrent gc will use") \ 1409 \ 1410 product(uintx, YoungPLABSize, 4096, \ 1411 "Size of young gen promotion labs (in HeapWords)") \ 1412 \ 1413 product(uintx, OldPLABSize, 1024, \ 1414 "Size of old gen promotion labs (in HeapWords)") \ 1415 \ 1416 product(uintx, GCTaskTimeStampEntries, 200, \ 1417 "Number of time stamp entries per gc worker thread") \ 1418 \ 1419 product(bool, AlwaysTenure, false, \ 1420 "Always tenure objects in eden. (ParallelGC only)") \ 1421 \ 1422 product(bool, NeverTenure, false, \ 1423 "Never tenure objects in eden, May tenure on overflow " \ 1424 "(ParallelGC only)") \ 1425 \ 1426 product(bool, ScavengeBeforeFullGC, true, \ 1427 "Scavenge youngest generation before each full GC, " \ 1428 "used with UseParallelGC") \ 1429 \ 1430 develop(bool, ScavengeWithObjectsInToSpace, false, \ 1431 "Allow scavenges to occur when to_space contains objects.") \ 1432 \ 1433 product(bool, UseConcMarkSweepGC, false, \ 1434 "Use Concurrent Mark-Sweep GC in the old generation") \ 1435 \ 1436 product(bool, ExplicitGCInvokesConcurrent, false, \ 1437 "A System.gc() request invokes a concurrent collection;" \ 1438 " (effective only when UseConcMarkSweepGC)") \ 1439 \ 1440 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1441 "A System.gc() request invokes a concurrent collection and " \ 1442 "also unloads classes during such a concurrent gc cycle " \ 1443 "(effective only when UseConcMarkSweepGC)") \ 1444 \ 1445 product(bool, GCLockerInvokesConcurrent, false, \ 1446 "The exit of a JNI CS necessitating a scavenge also" \ 1447 " kicks off a bkgrd concurrent collection") \ 1448 \ 1449 product(uintx, GCLockerEdenExpansionPercent, 5, \ 1450 "How much the GC can expand the eden by while the GC locker " \ 1451 "is active (as a percentage)") \ 1452 \ 1453 diagnostic(intx, GCLockerRetryAllocationCount, 2, \ 1454 "Number of times to retry allocations when" \ 1455 " blocked by the GC locker") \ 1456 \ 1457 develop(bool, UseCMSAdaptiveFreeLists, true, \ 1458 "Use Adaptive Free Lists in the CMS generation") \ 1459 \ 1460 develop(bool, UseAsyncConcMarkSweepGC, true, \ 1461 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1462 \ 1463 develop(bool, RotateCMSCollectionTypes, false, \ 1464 "Rotate the CMS collections among concurrent and STW") \ 1465 \ 1466 product(bool, UseCMSBestFit, true, \ 1467 "Use CMS best fit allocation strategy") \ 1468 \ 1469 product(bool, UseCMSCollectionPassing, true, \ 1470 "Use passing of collection from background to foreground") \ 1471 \ 1472 product(bool, UseParNewGC, false, \ 1473 "Use parallel threads in the new generation.") \ 1474 \ 1475 product(bool, ParallelGCVerbose, false, \ 1476 "Verbose output for parallel GC.") \ 1477 \ 1478 product(uintx, ParallelGCBufferWastePct, 10, \ 1479 "Wasted fraction of parallel allocation buffer.") \ 1480 \ 1481 diagnostic(bool, ParallelGCRetainPLAB, false, \ 1482 "Retain parallel allocation buffers across scavenges; " \ 1483 " -- disabled because this currently conflicts with " \ 1484 " parallel card scanning under certain conditions ") \ 1485 \ 1486 product(uintx, TargetPLABWastePct, 10, \ 1487 "Target wasted space in last buffer as percent of overall " \ 1488 "allocation") \ 1489 \ 1490 product(uintx, PLABWeight, 75, \ 1491 "Percentage (0-100) used to weight the current sample when" \ 1492 "computing exponentially decaying average for ResizePLAB.") \ 1493 \ 1494 product(bool, ResizePLAB, true, \ 1495 "Dynamically resize (survivor space) promotion labs") \ 1496 \ 1497 product(bool, PrintPLAB, false, \ 1498 "Print (survivor space) promotion labs sizing decisions") \ 1499 \ 1500 product(intx, ParGCArrayScanChunk, 50, \ 1501 "Scan a subset and push remainder, if array is bigger than this") \ 1502 \ 1503 product(bool, ParGCUseLocalOverflow, false, \ 1504 "Instead of a global overflow list, use local overflow stacks") \ 1505 \ 1506 product(bool, ParGCTrimOverflow, true, \ 1507 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ 1508 \ 1509 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 1510 "Whether we should simulate work queue overflow in ParNew") \ 1511 \ 1512 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1513 "An `interval' counter that determines how frequently " \ 1514 "we simulate overflow; a smaller number increases frequency") \ 1515 \ 1516 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1517 "The desired number of objects to claim from the overflow list") \ 1518 \ 1519 diagnostic(uintx, ParGCStridesPerThread, 2, \ 1520 "The number of strides per worker thread that we divide up the " \ 1521 "card table scanning work into") \ 1522 \ 1523 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 1524 "The number of cards in each chunk of the parallel chunks used " \ 1525 "during card table scanning") \ 1526 \ 1527 product(uintx, CMSParPromoteBlocksToClaim, 16, \ 1528 "Number of blocks to attempt to claim when refilling CMS LAB for "\ 1529 "parallel GC.") \ 1530 \ 1531 product(uintx, OldPLABWeight, 50, \ 1532 "Percentage (0-100) used to weight the current sample when" \ 1533 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ 1534 \ 1535 product(bool, ResizeOldPLAB, true, \ 1536 "Dynamically resize (old gen) promotion labs") \ 1537 \ 1538 product(bool, PrintOldPLAB, false, \ 1539 "Print (old gen) promotion labs sizing decisions") \ 1540 \ 1541 product(uintx, CMSOldPLABMin, 16, \ 1542 "Min size of CMS gen promotion lab caches per worker per blksize")\ 1543 \ 1544 product(uintx, CMSOldPLABMax, 1024, \ 1545 "Max size of CMS gen promotion lab caches per worker per blksize")\ 1546 \ 1547 product(uintx, CMSOldPLABNumRefills, 4, \ 1548 "Nominal number of refills of CMS gen promotion lab cache" \ 1549 " per worker per block size") \ 1550 \ 1551 product(bool, CMSOldPLABResizeQuicker, false, \ 1552 "Whether to react on-the-fly during a scavenge to a sudden" \ 1553 " change in block demand rate") \ 1554 \ 1555 product(uintx, CMSOldPLABToleranceFactor, 4, \ 1556 "The tolerance of the phase-change detector for on-the-fly" \ 1557 " PLAB resizing during a scavenge") \ 1558 \ 1559 product(uintx, CMSOldPLABReactivityFactor, 2, \ 1560 "The gain in the feedback loop for on-the-fly PLAB resizing" \ 1561 " during a scavenge") \ 1562 \ 1563 product(bool, AlwaysPreTouch, false, \ 1564 "It forces all freshly committed pages to be pre-touched.") \ 1565 \ 1566 product_pd(uintx, CMSYoungGenPerWorker, \ 1567 "The maximum size of young gen chosen by default per GC worker " \ 1568 "thread available") \ 1569 \ 1570 product(bool, CMSIncrementalMode, false, \ 1571 "Whether CMS GC should operate in \"incremental\" mode") \ 1572 \ 1573 product(uintx, CMSIncrementalDutyCycle, 10, \ 1574 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ 1575 "CMSIncrementalPacing is enabled, then this is just the initial" \ 1576 "value") \ 1577 \ 1578 product(bool, CMSIncrementalPacing, true, \ 1579 "Whether the CMS incremental mode duty cycle should be " \ 1580 "automatically adjusted") \ 1581 \ 1582 product(uintx, CMSIncrementalDutyCycleMin, 0, \ 1583 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ 1584 "enabled (a percentage, 0-100)") \ 1585 \ 1586 product(uintx, CMSIncrementalSafetyFactor, 10, \ 1587 "Percentage (0-100) used to add conservatism when computing the " \ 1588 "duty cycle") \ 1589 \ 1590 product(uintx, CMSIncrementalOffset, 0, \ 1591 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ 1592 " is shifted to the right within the period between young GCs") \ 1593 \ 1594 product(uintx, CMSExpAvgFactor, 50, \ 1595 "Percentage (0-100) used to weight the current sample when" \ 1596 "computing exponential averages for CMS statistics.") \ 1597 \ 1598 product(uintx, CMS_FLSWeight, 75, \ 1599 "Percentage (0-100) used to weight the current sample when" \ 1600 "computing exponentially decating averages for CMS FLS statistics.") \ 1601 \ 1602 product(uintx, CMS_FLSPadding, 1, \ 1603 "The multiple of deviation from mean to use for buffering" \ 1604 "against volatility in free list demand.") \ 1605 \ 1606 product(uintx, FLSCoalescePolicy, 2, \ 1607 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ 1608 \ 1609 product(bool, FLSAlwaysCoalesceLarge, false, \ 1610 "CMS: Larger free blocks are always available for coalescing") \ 1611 \ 1612 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 1613 "CMS: the smaller the percentage the greater the coalition force")\ 1614 \ 1615 product(double, CMSSmallCoalSurplusPercent, 1.05, \ 1616 "CMS: the factor by which to inflate estimated demand of small" \ 1617 " block sizes to prevent coalescing with an adjoining block") \ 1618 \ 1619 product(double, CMSLargeCoalSurplusPercent, 0.95, \ 1620 "CMS: the factor by which to inflate estimated demand of large" \ 1621 " block sizes to prevent coalescing with an adjoining block") \ 1622 \ 1623 product(double, CMSSmallSplitSurplusPercent, 1.10, \ 1624 "CMS: the factor by which to inflate estimated demand of small" \ 1625 " block sizes to prevent splitting to supply demand for smaller" \ 1626 " blocks") \ 1627 \ 1628 product(double, CMSLargeSplitSurplusPercent, 1.00, \ 1629 "CMS: the factor by which to inflate estimated demand of large" \ 1630 " block sizes to prevent splitting to supply demand for smaller" \ 1631 " blocks") \ 1632 \ 1633 product(bool, CMSExtrapolateSweep, false, \ 1634 "CMS: cushion for block demand during sweep") \ 1635 \ 1636 product(uintx, CMS_SweepWeight, 75, \ 1637 "Percentage (0-100) used to weight the current sample when " \ 1638 "computing exponentially decaying average for inter-sweep " \ 1639 "duration") \ 1640 \ 1641 product(uintx, CMS_SweepPadding, 1, \ 1642 "The multiple of deviation from mean to use for buffering " \ 1643 "against volatility in inter-sweep duration.") \ 1644 \ 1645 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1646 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1647 "duration exceeds this threhold in milliseconds") \ 1648 \ 1649 develop(bool, CMSTraceIncrementalMode, false, \ 1650 "Trace CMS incremental mode") \ 1651 \ 1652 develop(bool, CMSTraceIncrementalPacing, false, \ 1653 "Trace CMS incremental mode pacing computation") \ 1654 \ 1655 develop(bool, CMSTraceThreadState, false, \ 1656 "Trace the CMS thread state (enable the trace_state() method)") \ 1657 \ 1658 product(bool, CMSClassUnloadingEnabled, true, \ 1659 "Whether class unloading enabled when using CMS GC") \ 1660 \ 1661 product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1662 "When CMS class unloading is enabled, the maximum CMS cycle count"\ 1663 " for which classes may not be unloaded") \ 1664 \ 1665 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ 1666 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ 1667 \ 1668 product(bool, UseCMSCompactAtFullCollection, true, \ 1669 "Use mark sweep compact at full collections") \ 1670 \ 1671 product(uintx, CMSFullGCsBeforeCompaction, 0, \ 1672 "Number of CMS full collection done before compaction if > 0") \ 1673 \ 1674 develop(intx, CMSDictionaryChoice, 0, \ 1675 "Use BinaryTreeDictionary as default in the CMS generation") \ 1676 \ 1677 product(uintx, CMSIndexedFreeListReplenish, 4, \ 1678 "Replenish an indexed free list with this number of chunks") \ 1679 \ 1680 product(bool, CMSReplenishIntermediate, true, \ 1681 "Replenish all intermediate free-list caches") \ 1682 \ 1683 product(bool, CMSSplitIndexedFreeListBlocks, true, \ 1684 "When satisfying batched demand, split blocks from the " \ 1685 "IndexedFreeList whose size is a multiple of requested size") \ 1686 \ 1687 product(bool, CMSLoopWarn, false, \ 1688 "Warn in case of excessive CMS looping") \ 1689 \ 1690 develop(bool, CMSOverflowEarlyRestoration, false, \ 1691 "Whether preserved marks should be restored early") \ 1692 \ 1693 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1694 "Size of marking stack") \ 1695 \ 1696 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1697 "Max size of marking stack") \ 1698 \ 1699 notproduct(bool, CMSMarkStackOverflowALot, false, \ 1700 "Whether we should simulate frequent marking stack / work queue" \ 1701 " overflow") \ 1702 \ 1703 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1704 "An `interval' counter that determines how frequently" \ 1705 " we simulate overflow; a smaller number increases frequency") \ 1706 \ 1707 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1708 "(Temporary, subject to experimentation)" \ 1709 "Maximum number of abortable preclean iterations, if > 0") \ 1710 \ 1711 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1712 "(Temporary, subject to experimentation)" \ 1713 "Maximum time in abortable preclean in ms") \ 1714 \ 1715 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1716 "(Temporary, subject to experimentation)" \ 1717 "Nominal minimum work per abortable preclean iteration") \ 1718 \ 1719 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1720 "(Temporary, subject to experimentation)" \ 1721 " Time that we sleep between iterations when not given" \ 1722 " enough work per iteration") \ 1723 \ 1724 product(uintx, CMSRescanMultiple, 32, \ 1725 "Size (in cards) of CMS parallel rescan task") \ 1726 \ 1727 product(uintx, CMSConcMarkMultiple, 32, \ 1728 "Size (in cards) of CMS concurrent MT marking task") \ 1729 \ 1730 product(bool, CMSAbortSemantics, false, \ 1731 "Whether abort-on-overflow semantics is implemented") \ 1732 \ 1733 product(bool, CMSParallelInitialMarkEnabled, true, \ 1734 "Use the parallel initial mark.") \ 1735 \ 1736 product(bool, CMSParallelRemarkEnabled, true, \ 1737 "Whether parallel remark enabled (only if ParNewGC)") \ 1738 \ 1739 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1740 "Whether parallel remark of survivor space" \ 1741 " enabled (effective only if CMSParallelRemarkEnabled)") \ 1742 \ 1743 product(bool, CMSPLABRecordAlways, true, \ 1744 "Whether to always record survivor space PLAB bdries" \ 1745 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ 1746 \ 1747 product(bool, CMSEdenChunksRecordAlways, true, \ 1748 "Whether to always record eden chunks used for " \ 1749 "the parallel initial mark or remark of eden" ) \ 1750 \ 1751 product(bool, CMSPrintEdenSurvivorChunks, false, \ 1752 "Print the eden and the survivor chunks used for the parallel " \ 1753 "initial mark or remark of the eden/survivor spaces") \ 1754 \ 1755 product(bool, CMSConcurrentMTEnabled, true, \ 1756 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ 1757 \ 1758 product(bool, CMSPrecleaningEnabled, true, \ 1759 "Whether concurrent precleaning enabled") \ 1760 \ 1761 product(uintx, CMSPrecleanIter, 3, \ 1762 "Maximum number of precleaning iteration passes") \ 1763 \ 1764 product(uintx, CMSPrecleanNumerator, 2, \ 1765 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1766 " ratio") \ 1767 \ 1768 product(uintx, CMSPrecleanDenominator, 3, \ 1769 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1770 " ratio") \ 1771 \ 1772 product(bool, CMSPrecleanRefLists1, true, \ 1773 "Preclean ref lists during (initial) preclean phase") \ 1774 \ 1775 product(bool, CMSPrecleanRefLists2, false, \ 1776 "Preclean ref lists during abortable preclean phase") \ 1777 \ 1778 product(bool, CMSPrecleanSurvivors1, false, \ 1779 "Preclean survivors during (initial) preclean phase") \ 1780 \ 1781 product(bool, CMSPrecleanSurvivors2, true, \ 1782 "Preclean survivors during abortable preclean phase") \ 1783 \ 1784 product(uintx, CMSPrecleanThreshold, 1000, \ 1785 "Don't re-iterate if #dirty cards less than this") \ 1786 \ 1787 product(bool, CMSCleanOnEnter, true, \ 1788 "Clean-on-enter optimization for reducing number of dirty cards") \ 1789 \ 1790 product(uintx, CMSRemarkVerifyVariant, 1, \ 1791 "Choose variant (1,2) of verification following remark") \ 1792 \ 1793 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1794 "If Eden used is below this value, don't try to schedule remark") \ 1795 \ 1796 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1797 "The Eden occupancy % at which to try and schedule remark pause") \ 1798 \ 1799 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1800 "Start sampling Eden top at least before yg occupancy reaches" \ 1801 " 1/<ratio> of the size at which we plan to schedule remark") \ 1802 \ 1803 product(uintx, CMSSamplingGrain, 16*K, \ 1804 "The minimum distance between eden samples for CMS (see above)") \ 1805 \ 1806 product(bool, CMSScavengeBeforeRemark, false, \ 1807 "Attempt scavenge before the CMS remark step") \ 1808 \ 1809 develop(bool, CMSTraceSweeper, false, \ 1810 "Trace some actions of the CMS sweeper") \ 1811 \ 1812 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1813 "Don't drain below this size per parallel worker/thief") \ 1814 \ 1815 manageable(intx, CMSWaitDuration, 2000, \ 1816 "Time in milliseconds that CMS thread waits for young GC") \ 1817 \ 1818 develop(uintx, CMSCheckInterval, 1000, \ 1819 "Interval in milliseconds that CMS thread checks if it " \ 1820 "should start a collection cycle") \ 1821 \ 1822 product(bool, CMSYield, true, \ 1823 "Yield between steps of concurrent mark & sweep") \ 1824 \ 1825 product(uintx, CMSBitMapYieldQuantum, 10*M, \ 1826 "Bitmap operations should process at most this many bits" \ 1827 "between yields") \ 1828 \ 1829 product(bool, CMSDumpAtPromotionFailure, false, \ 1830 "Dump useful information about the state of the CMS old " \ 1831 " generation upon a promotion failure.") \ 1832 \ 1833 product(bool, CMSPrintChunksInDump, false, \ 1834 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1835 " more detailed information about the free chunks.") \ 1836 \ 1837 product(bool, CMSPrintObjectsInDump, false, \ 1838 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1839 " more detailed information about the allocated objects.") \ 1840 \ 1841 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1842 "Verify that all refs across the FLS boundary " \ 1843 " are to valid objects") \ 1844 \ 1845 diagnostic(bool, FLSVerifyLists, false, \ 1846 "Do lots of (expensive) FreeListSpace verification") \ 1847 \ 1848 diagnostic(bool, FLSVerifyIndexTable, false, \ 1849 "Do lots of (expensive) FLS index table verification") \ 1850 \ 1851 develop(bool, FLSVerifyDictionary, false, \ 1852 "Do lots of (expensive) FLS dictionary verification") \ 1853 \ 1854 develop(bool, VerifyBlockOffsetArray, false, \ 1855 "Do (expensive!) block offset array verification") \ 1856 \ 1857 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 1858 "Maintain _unallocated_block in BlockOffsetArray" \ 1859 " (currently applicable only to CMS collector)") \ 1860 \ 1861 develop(bool, TraceCMSState, false, \ 1862 "Trace the state of the CMS collection") \ 1863 \ 1864 product(intx, RefDiscoveryPolicy, 0, \ 1865 "Whether reference-based(0) or referent-based(1)") \ 1866 \ 1867 product(bool, ParallelRefProcEnabled, false, \ 1868 "Enable parallel reference processing whenever possible") \ 1869 \ 1870 product(bool, ParallelRefProcBalancingEnabled, true, \ 1871 "Enable balancing of reference processing queues") \ 1872 \ 1873 product(uintx, CMSTriggerRatio, 80, \ 1874 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1875 "allocated before a CMS collection cycle commences") \ 1876 \ 1877 product(uintx, CMSBootstrapOccupancy, 50, \ 1878 "Percentage CMS generation occupancy at which to " \ 1879 "initiate CMS collection for bootstrapping collection stats") \ 1880 \ 1881 product(intx, CMSInitiatingOccupancyFraction, -1, \ 1882 "Percentage CMS generation occupancy to start a CMS collection " \ 1883 "cycle. A negative value means that CMSTriggerRatio is used") \ 1884 \ 1885 product(uintx, InitiatingHeapOccupancyPercent, 45, \ 1886 "Percentage of the (entire) heap occupancy to start a " \ 1887 "concurrent GC cycle. It is used by GCs that trigger a " \ 1888 "concurrent GC cycle based on the occupancy of the entire heap, " \ 1889 "not just one of the generations (e.g., G1). A value of 0 " \ 1890 "denotes 'do constant GC cycles'.") \ 1891 \ 1892 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1893 "Only use occupancy as a crierion for starting a CMS collection") \ 1894 \ 1895 product(uintx, CMSIsTooFullPercentage, 98, \ 1896 "An absolute ceiling above which CMS will always consider the " \ 1897 "unloading of classes when class unloading is enabled") \ 1898 \ 1899 develop(bool, CMSTestInFreeList, false, \ 1900 "Check if the coalesced range is already in the " \ 1901 "free lists as claimed") \ 1902 \ 1903 notproduct(bool, CMSVerifyReturnedBytes, false, \ 1904 "Check that all the garbage collected was returned to the " \ 1905 "free lists.") \ 1906 \ 1907 notproduct(bool, ScavengeALot, false, \ 1908 "Force scavenge at every Nth exit from the runtime system " \ 1909 "(N=ScavengeALotInterval)") \ 1910 \ 1911 develop(bool, FullGCALot, false, \ 1912 "Force full gc at every Nth exit from the runtime system " \ 1913 "(N=FullGCALotInterval)") \ 1914 \ 1915 notproduct(bool, GCALotAtAllSafepoints, false, \ 1916 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1917 \ 1918 product(bool, PrintPromotionFailure, false, \ 1919 "Print additional diagnostic information following " \ 1920 " promotion failure") \ 1921 \ 1922 notproduct(bool, PromotionFailureALot, false, \ 1923 "Use promotion failure handling on every youngest generation " \ 1924 "collection") \ 1925 \ 1926 develop(uintx, PromotionFailureALotCount, 1000, \ 1927 "Number of promotion failures occurring at ParGCAllocBuffer" \ 1928 "refill attempts (ParNew) or promotion attempts " \ 1929 "(other young collectors) ") \ 1930 \ 1931 develop(uintx, PromotionFailureALotInterval, 5, \ 1932 "Total collections between promotion failures alot") \ 1933 \ 1934 experimental(uintx, WorkStealingSleepMillis, 1, \ 1935 "Sleep time when sleep is used for yields") \ 1936 \ 1937 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 1938 "Number of yields before a sleep is done during workstealing") \ 1939 \ 1940 experimental(uintx, WorkStealingHardSpins, 4096, \ 1941 "Number of iterations in a spin loop between checks on " \ 1942 "time out of hard spin") \ 1943 \ 1944 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 1945 "Ratio of hard spins to calls to yield") \ 1946 \ 1947 develop(uintx, ObjArrayMarkingStride, 512, \ 1948 "Number of ObjArray elements to push onto the marking stack" \ 1949 "before pushing a continuation entry") \ 1950 \ 1951 develop(bool, MetadataAllocationFailALot, false, \ 1952 "Fail metadata allocations at intervals controlled by " \ 1953 "MetadataAllocationFailALotInterval") \ 1954 \ 1955 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 1956 "metadata allocation failure alot interval") \ 1957 \ 1958 develop(bool, MetaDataDeallocateALot, false, \ 1959 "Deallocation bunches of metadata at intervals controlled by " \ 1960 "MetaDataAllocateALotInterval") \ 1961 \ 1962 develop(uintx, MetaDataDeallocateALotInterval, 100, \ 1963 "Metadata deallocation alot interval") \ 1964 \ 1965 develop(bool, TraceMetadataChunkAllocation, false, \ 1966 "Trace chunk metadata allocations") \ 1967 \ 1968 product(bool, TraceMetadataHumongousAllocation, false, \ 1969 "Trace humongous metadata allocations") \ 1970 \ 1971 develop(bool, TraceMetavirtualspaceAllocation, false, \ 1972 "Trace virtual space metadata allocations") \ 1973 \ 1974 notproduct(bool, ExecuteInternalVMTests, false, \ 1975 "Enable execution of internal VM tests.") \ 1976 \ 1977 notproduct(bool, VerboseInternalVMTests, false, \ 1978 "Turn on logging for internal VM tests.") \ 1979 \ 1980 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 1981 \ 1982 product_pd(bool, ResizeTLAB, \ 1983 "Dynamically resize tlab size for threads") \ 1984 \ 1985 product(bool, ZeroTLAB, false, \ 1986 "Zero out the newly created TLAB") \ 1987 \ 1988 product(bool, FastTLABRefill, true, \ 1989 "Use fast TLAB refill code") \ 1990 \ 1991 product(bool, PrintTLAB, false, \ 1992 "Print various TLAB related information") \ 1993 \ 1994 product(bool, TLABStats, true, \ 1995 "Print various TLAB related information") \ 1996 \ 1997 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ 1998 "Enable LowMemoryProtection")) \ 1999 \ 2000 product_pd(bool, NeverActAsServerClassMachine, \ 2001 "Never act like a server-class machine") \ 2002 \ 2003 product(bool, AlwaysActAsServerClassMachine, false, \ 2004 "Always act like a server-class machine") \ 2005 \ 2006 product_pd(uint64_t, MaxRAM, \ 2007 "Real memory size (in bytes) used to set maximum heap size") \ 2008 \ 2009 product(uintx, ErgoHeapSizeLimit, 0, \ 2010 "Maximum ergonomically set heap size (in bytes); zero means use " \ 2011 "MaxRAM / MaxRAMFraction") \ 2012 \ 2013 product(uintx, MaxRAMFraction, 4, \ 2014 "Maximum fraction (1/n) of real memory used for maximum heap " \ 2015 "size") \ 2016 \ 2017 product(uintx, DefaultMaxRAMFraction, 4, \ 2018 "Maximum fraction (1/n) of real memory used for maximum heap " \ 2019 "size; deprecated: to be renamed to MaxRAMFraction") \ 2020 \ 2021 product(uintx, MinRAMFraction, 2, \ 2022 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ 2023 "size on systems with small physical memory size") \ 2024 \ 2025 product(uintx, InitialRAMFraction, 64, \ 2026 "Fraction (1/n) of real memory used for initial heap size") \ 2027 \ 2028 develop(uintx, MaxVirtMemFraction, 2, \ 2029 "Maximum fraction (1/n) of virtual memory used for ergonomically" \ 2030 "determining maximum heap size") \ 2031 \ 2032 product(bool, UseAutoGCSelectPolicy, false, \ 2033 "Use automatic collection selection policy") \ 2034 \ 2035 product(uintx, AutoGCSelectPauseMillis, 5000, \ 2036 "Automatic GC selection pause threshhold in ms") \ 2037 \ 2038 product(bool, UseAdaptiveSizePolicy, true, \ 2039 "Use adaptive generation sizing policies") \ 2040 \ 2041 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 2042 "Use adaptive survivor sizing policies") \ 2043 \ 2044 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 2045 "Use adaptive young-old sizing policies at minor collections") \ 2046 \ 2047 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 2048 "Use adaptive young-old sizing policies at major collections") \ 2049 \ 2050 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 2051 "Use statistics from System.GC for adaptive size policy") \ 2052 \ 2053 product(bool, UseAdaptiveGCBoundary, false, \ 2054 "Allow young-old boundary to move") \ 2055 \ 2056 develop(bool, TraceAdaptiveGCBoundary, false, \ 2057 "Trace young-old boundary moves") \ 2058 \ 2059 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 2060 "Resize the virtual spaces of the young or old generations") \ 2061 \ 2062 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 2063 "Policy for changeing generation size for throughput goals") \ 2064 \ 2065 product(uintx, AdaptiveSizePausePolicy, 0, \ 2066 "Policy for changing generation size for pause goals") \ 2067 \ 2068 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 2069 "Adjust tenured generation to achive a minor pause goal") \ 2070 \ 2071 develop(bool, PSAdjustYoungGenForMajorPause, false, \ 2072 "Adjust young generation to achive a major pause goal") \ 2073 \ 2074 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 2075 "Number of steps where heuristics is used before data is used") \ 2076 \ 2077 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2078 "Number of collections before the adaptive sizing is started") \ 2079 \ 2080 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2081 "Collection interval for printing information; zero means never") \ 2082 \ 2083 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2084 "Use adaptive minimum footprint as a goal") \ 2085 \ 2086 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2087 "Weight given to exponential resizing, between 0 and 100") \ 2088 \ 2089 product(uintx, AdaptiveTimeWeight, 25, \ 2090 "Weight given to time in adaptive policy, between 0 and 100") \ 2091 \ 2092 product(uintx, PausePadding, 1, \ 2093 "How much buffer to keep for pause time") \ 2094 \ 2095 product(uintx, PromotedPadding, 3, \ 2096 "How much buffer to keep for promotion failure") \ 2097 \ 2098 product(uintx, SurvivorPadding, 3, \ 2099 "How much buffer to keep for survivor overflow") \ 2100 \ 2101 product(uintx, ThresholdTolerance, 10, \ 2102 "Allowed collection cost difference between generations") \ 2103 \ 2104 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 2105 "If collection costs are within margin, reduce both by full " \ 2106 "delta") \ 2107 \ 2108 product(uintx, YoungGenerationSizeIncrement, 20, \ 2109 "Adaptive size percentage change in young generation") \ 2110 \ 2111 product(uintx, YoungGenerationSizeSupplement, 80, \ 2112 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 2113 \ 2114 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 2115 "Decay factor to YoungedGenerationSizeSupplement") \ 2116 \ 2117 product(uintx, TenuredGenerationSizeIncrement, 20, \ 2118 "Adaptive size percentage change in tenured generation") \ 2119 \ 2120 product(uintx, TenuredGenerationSizeSupplement, 80, \ 2121 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 2122 \ 2123 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 2124 "Decay factor to TenuredGenerationSizeIncrement") \ 2125 \ 2126 product(uintx, MaxGCPauseMillis, max_uintx, \ 2127 "Adaptive size policy maximum GC pause time goal in msec, " \ 2128 "or (G1 Only) the max. GC time per MMU time slice") \ 2129 \ 2130 product(uintx, GCPauseIntervalMillis, 0, \ 2131 "Time slice for MMU specification") \ 2132 \ 2133 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 2134 "Adaptive size policy maximum GC minor pause time goal in msec") \ 2135 \ 2136 product(uintx, GCTimeRatio, 99, \ 2137 "Adaptive size policy application time to GC time ratio") \ 2138 \ 2139 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 2140 "Adaptive size scale down factor for shrinking") \ 2141 \ 2142 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 2143 "Adaptive size decays the major cost for long major intervals") \ 2144 \ 2145 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 2146 "Time scale over which major costs decay") \ 2147 \ 2148 product(uintx, MinSurvivorRatio, 3, \ 2149 "Minimum ratio of young generation/survivor space size") \ 2150 \ 2151 product(uintx, InitialSurvivorRatio, 8, \ 2152 "Initial ratio of eden/survivor space size") \ 2153 \ 2154 product(uintx, BaseFootPrintEstimate, 256*M, \ 2155 "Estimate of footprint other than Java Heap") \ 2156 \ 2157 product(bool, UseGCOverheadLimit, true, \ 2158 "Use policy to limit of proportion of time spent in GC " \ 2159 "before an OutOfMemory error is thrown") \ 2160 \ 2161 product(uintx, GCTimeLimit, 98, \ 2162 "Limit of proportion of time spent in GC before an OutOfMemory" \ 2163 "error is thrown (used with GCHeapFreeLimit)") \ 2164 \ 2165 product(uintx, GCHeapFreeLimit, 2, \ 2166 "Minimum percentage of free space after a full GC before an " \ 2167 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 2168 \ 2169 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 2170 "Number of consecutive collections before gc time limit fires") \ 2171 \ 2172 product(bool, PrintAdaptiveSizePolicy, false, \ 2173 "Print information about AdaptiveSizePolicy") \ 2174 \ 2175 product(intx, PrefetchCopyIntervalInBytes, -1, \ 2176 "How far ahead to prefetch destination area (<= 0 means off)") \ 2177 \ 2178 product(intx, PrefetchScanIntervalInBytes, -1, \ 2179 "How far ahead to prefetch scan area (<= 0 means off)") \ 2180 \ 2181 product(intx, PrefetchFieldsAhead, -1, \ 2182 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 2183 \ 2184 diagnostic(bool, VerifySilently, false, \ 2185 "Don't print print the verification progress") \ 2186 \ 2187 diagnostic(bool, VerifyDuringStartup, false, \ 2188 "Verify memory system before executing any Java code " \ 2189 "during VM initialization") \ 2190 \ 2191 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 2192 "Verify system before exiting") \ 2193 \ 2194 diagnostic(bool, VerifyBeforeGC, false, \ 2195 "Verify memory system before GC") \ 2196 \ 2197 diagnostic(bool, VerifyAfterGC, false, \ 2198 "Verify memory system after GC") \ 2199 \ 2200 diagnostic(bool, VerifyDuringGC, false, \ 2201 "Verify memory system during GC (between phases)") \ 2202 \ 2203 diagnostic(bool, GCParallelVerificationEnabled, true, \ 2204 "Enable parallel memory system verification") \ 2205 \ 2206 diagnostic(bool, DeferInitialCardMark, false, \ 2207 "When +ReduceInitialCardMarks, explicitly defer any that " \ 2208 "may arise from new_pre_store_barrier") \ 2209 \ 2210 diagnostic(bool, VerifyRememberedSets, false, \ 2211 "Verify GC remembered sets") \ 2212 \ 2213 diagnostic(bool, VerifyObjectStartArray, true, \ 2214 "Verify GC object start array if verify before/after") \ 2215 \ 2216 product(bool, DisableExplicitGC, false, \ 2217 "Tells whether calling System.gc() does a full GC") \ 2218 \ 2219 notproduct(bool, CheckMemoryInitialization, false, \ 2220 "Checks memory initialization") \ 2221 \ 2222 product(bool, CollectGen0First, false, \ 2223 "Collect youngest generation before each full GC") \ 2224 \ 2225 diagnostic(bool, BindCMSThreadToCPU, false, \ 2226 "Bind CMS Thread to CPU if possible") \ 2227 \ 2228 diagnostic(uintx, CPUForCMSThread, 0, \ 2229 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 2230 \ 2231 product(bool, BindGCTaskThreadsToCPUs, false, \ 2232 "Bind GCTaskThreads to CPUs if possible") \ 2233 \ 2234 product(bool, UseGCTaskAffinity, false, \ 2235 "Use worker affinity when asking for GCTasks") \ 2236 \ 2237 product(uintx, ProcessDistributionStride, 4, \ 2238 "Stride through processors when distributing processes") \ 2239 \ 2240 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 2241 "number of times the coordinator GC thread will sleep while " \ 2242 "yielding before giving up and resuming GC") \ 2243 \ 2244 product(uintx, CMSYieldSleepCount, 0, \ 2245 "number of times a GC thread (minus the coordinator) " \ 2246 "will sleep while yielding before giving up and resuming GC") \ 2247 \ 2248 /* gc tracing */ \ 2249 manageable(bool, PrintGC, false, \ 2250 "Print message at garbage collect") \ 2251 \ 2252 manageable(bool, PrintGCDetails, false, \ 2253 "Print more details at garbage collect") \ 2254 \ 2255 manageable(bool, PrintGCDateStamps, false, \ 2256 "Print date stamps at garbage collect") \ 2257 \ 2258 manageable(bool, PrintGCTimeStamps, false, \ 2259 "Print timestamps at garbage collect") \ 2260 \ 2261 product(bool, PrintGCTaskTimeStamps, false, \ 2262 "Print timestamps for individual gc worker thread tasks") \ 2263 \ 2264 develop(intx, ConcGCYieldTimeout, 0, \ 2265 "If non-zero, assert that GC threads yield within this # of ms.") \ 2266 \ 2267 notproduct(bool, TraceMarkSweep, false, \ 2268 "Trace mark sweep") \ 2269 \ 2270 product(bool, PrintReferenceGC, false, \ 2271 "Print times spent handling reference objects during GC " \ 2272 " (enabled only when PrintGCDetails)") \ 2273 \ 2274 develop(bool, TraceReferenceGC, false, \ 2275 "Trace handling of soft/weak/final/phantom references") \ 2276 \ 2277 develop(bool, TraceFinalizerRegistration, false, \ 2278 "Trace registration of final references") \ 2279 \ 2280 notproduct(bool, TraceScavenge, false, \ 2281 "Trace scavenge") \ 2282 \ 2283 product_rw(bool, TraceClassLoading, false, \ 2284 "Trace all classes loaded") \ 2285 \ 2286 product(bool, TraceClassLoadingPreorder, false, \ 2287 "Trace all classes loaded in order referenced (not loaded)") \ 2288 \ 2289 product_rw(bool, TraceClassUnloading, false, \ 2290 "Trace unloading of classes") \ 2291 \ 2292 product_rw(bool, TraceLoaderConstraints, false, \ 2293 "Trace loader constraints") \ 2294 \ 2295 develop(bool, TraceClassLoaderData, false, \ 2296 "Trace class loader loader_data lifetime") \ 2297 \ 2298 product(uintx, InitialBootClassLoaderMetaspaceSize, \ 2299 NOT_LP64(2200*K) LP64_ONLY(4*M), \ 2300 "Initial size of the boot class loader data metaspace") \ 2301 \ 2302 product(bool, TraceGen0Time, false, \ 2303 "Trace accumulated time for Gen 0 collection") \ 2304 \ 2305 product(bool, TraceGen1Time, false, \ 2306 "Trace accumulated time for Gen 1 collection") \ 2307 \ 2308 product(bool, PrintTenuringDistribution, false, \ 2309 "Print tenuring age information") \ 2310 \ 2311 product_rw(bool, PrintHeapAtGC, false, \ 2312 "Print heap layout before and after each GC") \ 2313 \ 2314 product_rw(bool, PrintHeapAtGCExtended, false, \ 2315 "Prints extended information about the layout of the heap " \ 2316 "when -XX:+PrintHeapAtGC is set") \ 2317 \ 2318 product(bool, PrintHeapAtSIGBREAK, true, \ 2319 "Print heap layout in response to SIGBREAK") \ 2320 \ 2321 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 2322 "Print a class histogram before any major stop-world GC") \ 2323 \ 2324 manageable(bool, PrintClassHistogramAfterFullGC, false, \ 2325 "Print a class histogram after any major stop-world GC") \ 2326 \ 2327 manageable(bool, PrintClassHistogram, false, \ 2328 "Print a histogram of class instances") \ 2329 \ 2330 develop(bool, TraceWorkGang, false, \ 2331 "Trace activities of work gangs") \ 2332 \ 2333 product(bool, TraceParallelOldGCTasks, false, \ 2334 "Trace multithreaded GC activity") \ 2335 \ 2336 develop(bool, TraceBlockOffsetTable, false, \ 2337 "Print BlockOffsetTable maps") \ 2338 \ 2339 develop(bool, TraceCardTableModRefBS, false, \ 2340 "Print CardTableModRefBS maps") \ 2341 \ 2342 develop(bool, TraceGCTaskManager, false, \ 2343 "Trace actions of the GC task manager") \ 2344 \ 2345 develop(bool, TraceGCTaskQueue, false, \ 2346 "Trace actions of the GC task queues") \ 2347 \ 2348 diagnostic(bool, TraceGCTaskThread, false, \ 2349 "Trace actions of the GC task threads") \ 2350 \ 2351 product(bool, PrintParallelOldGCPhaseTimes, false, \ 2352 "Print the time taken by each parallel old gc phase." \ 2353 "PrintGCDetails must also be enabled.") \ 2354 \ 2355 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2356 "Trace parallel old gc marking phase") \ 2357 \ 2358 develop(bool, TraceParallelOldGCSummaryPhase, false, \ 2359 "Trace parallel old gc summary phase") \ 2360 \ 2361 develop(bool, TraceParallelOldGCCompactionPhase, false, \ 2362 "Trace parallel old gc compaction phase") \ 2363 \ 2364 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2365 "Trace parallel old gc dense prefix computation") \ 2366 \ 2367 develop(bool, IgnoreLibthreadGPFault, false, \ 2368 "Suppress workaround for libthread GP fault") \ 2369 \ 2370 product(bool, PrintJNIGCStalls, false, \ 2371 "Print diagnostic message when GC is stalled" \ 2372 "by JNI critical section") \ 2373 \ 2374 experimental(double, ObjectCountCutOffPercent, 0.5, \ 2375 "The percentage of the used heap that the instances of a class " \ 2376 "must occupy for the class to generate a trace event.") \ 2377 \ 2378 /* GC log rotation setting */ \ 2379 \ 2380 product(bool, UseGCLogFileRotation, false, \ 2381 "Prevent large gclog file for long running app. " \ 2382 "Requires -Xloggc:<filename>") \ 2383 \ 2384 product(uintx, NumberOfGCLogFiles, 0, \ 2385 "Number of gclog files in rotation, " \ 2386 "Default: 0, no rotation") \ 2387 \ 2388 product(uintx, GCLogFileSize, 0, \ 2389 "GC log file size, Default: 0 bytes, no rotation " \ 2390 "Only valid with UseGCLogFileRotation") \ 2391 \ 2392 /* JVMTI heap profiling */ \ 2393 \ 2394 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2395 "Trace JVMTI object tagging calls") \ 2396 \ 2397 diagnostic(bool, VerifyBeforeIteration, false, \ 2398 "Verify memory system before JVMTI iteration") \ 2399 \ 2400 /* compiler interface */ \ 2401 \ 2402 develop(bool, CIPrintCompilerName, false, \ 2403 "when CIPrint is active, print the name of the active compiler") \ 2404 \ 2405 develop(bool, CIPrintCompileQueue, false, \ 2406 "display the contents of the compile queue whenever a " \ 2407 "compilation is enqueued") \ 2408 \ 2409 develop(bool, CIPrintRequests, false, \ 2410 "display every request for compilation") \ 2411 \ 2412 product(bool, CITime, false, \ 2413 "collect timing information for compilation") \ 2414 \ 2415 develop(bool, CITimeEach, false, \ 2416 "display timing information after each successful compilation") \ 2417 \ 2418 develop(bool, CICountOSR, false, \ 2419 "use a separate counter when assigning ids to osr compilations") \ 2420 \ 2421 develop(bool, CICompileNatives, true, \ 2422 "compile native methods if supported by the compiler") \ 2423 \ 2424 develop_pd(bool, CICompileOSR, \ 2425 "compile on stack replacement methods if supported by the " \ 2426 "compiler") \ 2427 \ 2428 develop(bool, CIPrintMethodCodes, false, \ 2429 "print method bytecodes of the compiled code") \ 2430 \ 2431 develop(bool, CIPrintTypeFlow, false, \ 2432 "print the results of ciTypeFlow analysis") \ 2433 \ 2434 develop(bool, CITraceTypeFlow, false, \ 2435 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2436 \ 2437 develop(intx, OSROnlyBCI, -1, \ 2438 "OSR only at this bci. Negative values mean exclude that bci") \ 2439 \ 2440 /* compiler */ \ 2441 \ 2442 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2443 "Number of compiler threads to run") \ 2444 \ 2445 product(intx, CompilationPolicyChoice, 0, \ 2446 "which compilation policy (0/1)") \ 2447 \ 2448 develop(bool, UseStackBanging, true, \ 2449 "use stack banging for stack overflow checks (required for " \ 2450 "proper StackOverflow handling; disable only to measure cost " \ 2451 "of stackbanging)") \ 2452 \ 2453 develop(bool, UseStrictFP, true, \ 2454 "use strict fp if modifier strictfp is set") \ 2455 \ 2456 develop(bool, GenerateSynchronizationCode, true, \ 2457 "generate locking/unlocking code for synchronized methods and " \ 2458 "monitors") \ 2459 \ 2460 develop(bool, GenerateCompilerNullChecks, true, \ 2461 "Generate explicit null checks for loads/stores/calls") \ 2462 \ 2463 develop(bool, GenerateRangeChecks, true, \ 2464 "Generate range checks for array accesses") \ 2465 \ 2466 develop_pd(bool, ImplicitNullChecks, \ 2467 "generate code for implicit null checks") \ 2468 \ 2469 product(bool, PrintSafepointStatistics, false, \ 2470 "print statistics about safepoint synchronization") \ 2471 \ 2472 product(intx, PrintSafepointStatisticsCount, 300, \ 2473 "total number of safepoint statistics collected " \ 2474 "before printing them out") \ 2475 \ 2476 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2477 "print safepoint statistics only when safepoint takes" \ 2478 " more than PrintSafepointSatisticsTimeout in millis") \ 2479 \ 2480 product(bool, TraceSafepointCleanupTime, false, \ 2481 "print the break down of clean up tasks performed during" \ 2482 " safepoint") \ 2483 \ 2484 product(bool, Inline, true, \ 2485 "enable inlining") \ 2486 \ 2487 product(bool, ClipInlining, true, \ 2488 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2489 \ 2490 develop(bool, UseCHA, true, \ 2491 "enable CHA") \ 2492 \ 2493 product(bool, UseTypeProfile, true, \ 2494 "Check interpreter profile for historically monomorphic calls") \ 2495 \ 2496 notproduct(bool, TimeCompiler, false, \ 2497 "time the compiler") \ 2498 \ 2499 diagnostic(bool, PrintInlining, false, \ 2500 "prints inlining optimizations") \ 2501 \ 2502 product(bool, UsePopCountInstruction, false, \ 2503 "Use population count instruction") \ 2504 \ 2505 develop(bool, EagerInitialization, false, \ 2506 "Eagerly initialize classes if possible") \ 2507 \ 2508 develop(bool, TraceMethodReplacement, false, \ 2509 "Print when methods are replaced do to recompilation") \ 2510 \ 2511 develop(bool, PrintMethodFlushing, false, \ 2512 "print the nmethods being flushed") \ 2513 \ 2514 develop(bool, UseRelocIndex, false, \ 2515 "use an index to speed random access to relocations") \ 2516 \ 2517 develop(bool, StressCodeBuffers, false, \ 2518 "Exercise code buffer expansion and other rare state changes") \ 2519 \ 2520 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2521 "Generate extra debugging info for non-safepoints in nmethods") \ 2522 \ 2523 product(bool, PrintVMOptions, false, \ 2524 "Print flags that appeared on the command line") \ 2525 \ 2526 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2527 "Ignore unrecognized VM options") \ 2528 \ 2529 product(bool, PrintCommandLineFlags, false, \ 2530 "Print flags specified on command line or set by ergonomics") \ 2531 \ 2532 product(bool, PrintFlagsInitial, false, \ 2533 "Print all VM flags before argument processing and exit VM") \ 2534 \ 2535 product(bool, PrintFlagsFinal, false, \ 2536 "Print all VM flags after argument and ergonomic processing") \ 2537 \ 2538 notproduct(bool, PrintFlagsWithComments, false, \ 2539 "Print all VM flags with default values and descriptions and exit")\ 2540 \ 2541 diagnostic(bool, SerializeVMOutput, true, \ 2542 "Use a mutex to serialize output to tty and LogFile") \ 2543 \ 2544 diagnostic(bool, DisplayVMOutput, true, \ 2545 "Display all VM output on the tty, independently of LogVMOutput") \ 2546 \ 2547 diagnostic(bool, LogVMOutput, false, \ 2548 "Save VM output to LogFile") \ 2549 \ 2550 diagnostic(ccstr, LogFile, NULL, \ 2551 "If LogVMOutput or LogCompilation is on, save VM output to " \ 2552 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)") \ 2553 \ 2554 product(ccstr, ErrorFile, NULL, \ 2555 "If an error occurs, save the error data to this file " \ 2556 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2557 \ 2558 product(bool, DisplayVMOutputToStderr, false, \ 2559 "If DisplayVMOutput is true, display all VM output to stderr") \ 2560 \ 2561 product(bool, DisplayVMOutputToStdout, false, \ 2562 "If DisplayVMOutput is true, display all VM output to stdout") \ 2563 \ 2564 product(bool, UseHeavyMonitors, false, \ 2565 "use heavyweight instead of lightweight Java monitors") \ 2566 \ 2567 product(bool, PrintStringTableStatistics, false, \ 2568 "print statistics about the StringTable and SymbolTable") \ 2569 \ 2570 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2571 "print histogram of the symbol table") \ 2572 \ 2573 notproduct(bool, ExitVMOnVerifyError, false, \ 2574 "standard exit from VM if bytecode verify error " \ 2575 "(only in debug mode)") \ 2576 \ 2577 notproduct(ccstr, AbortVMOnException, NULL, \ 2578 "Call fatal if this exception is thrown. Example: " \ 2579 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2580 \ 2581 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ 2582 "Call fatal if the exception pointed by AbortVMOnException " \ 2583 "has this message.") \ 2584 \ 2585 develop(bool, DebugVtables, false, \ 2586 "add debugging code to vtable dispatch") \ 2587 \ 2588 develop(bool, PrintVtables, false, \ 2589 "print vtables when printing klass") \ 2590 \ 2591 notproduct(bool, PrintVtableStats, false, \ 2592 "print vtables stats at end of run") \ 2593 \ 2594 develop(bool, TraceCreateZombies, false, \ 2595 "trace creation of zombie nmethods") \ 2596 \ 2597 notproduct(bool, IgnoreLockingAssertions, false, \ 2598 "disable locking assertions (for speed)") \ 2599 \ 2600 product(bool, RangeCheckElimination, true, \ 2601 "Eliminate range checks") \ 2602 \ 2603 develop_pd(bool, UncommonNullCast, \ 2604 "track occurrences of null in casts; adjust compiler tactics") \ 2605 \ 2606 develop(bool, TypeProfileCasts, true, \ 2607 "treat casts like calls for purposes of type profiling") \ 2608 \ 2609 develop(bool, DelayCompilationDuringStartup, true, \ 2610 "Delay invoking the compiler until main application class is " \ 2611 "loaded") \ 2612 \ 2613 develop(bool, CompileTheWorld, false, \ 2614 "Compile all methods in all classes in bootstrap class path " \ 2615 "(stress test)") \ 2616 \ 2617 develop(bool, CompileTheWorldPreloadClasses, true, \ 2618 "Preload all classes used by a class before start loading") \ 2619 \ 2620 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 2621 "Force a safepoint every n compiles so sweeper can keep up") \ 2622 \ 2623 develop(bool, FillDelaySlots, true, \ 2624 "Fill delay slots (on SPARC only)") \ 2625 \ 2626 develop(bool, TimeLivenessAnalysis, false, \ 2627 "Time computation of bytecode liveness analysis") \ 2628 \ 2629 develop(bool, TraceLivenessGen, false, \ 2630 "Trace the generation of liveness analysis information") \ 2631 \ 2632 notproduct(bool, TraceLivenessQuery, false, \ 2633 "Trace queries of liveness analysis information") \ 2634 \ 2635 notproduct(bool, CollectIndexSetStatistics, false, \ 2636 "Collect information about IndexSets") \ 2637 \ 2638 develop(bool, UseLoopSafepoints, true, \ 2639 "Generate Safepoint nodes in every loop") \ 2640 \ 2641 develop(intx, FastAllocateSizeLimit, 128*K, \ 2642 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2643 "Inline allocations larger than this in doublewords must go slow")\ 2644 \ 2645 product(bool, AggressiveOpts, false, \ 2646 "Enable aggressive optimizations - see arguments.cpp") \ 2647 \ 2648 /* statistics */ \ 2649 develop(bool, CountCompiledCalls, false, \ 2650 "counts method invocations") \ 2651 \ 2652 notproduct(bool, CountRuntimeCalls, false, \ 2653 "counts VM runtime calls") \ 2654 \ 2655 develop(bool, CountJNICalls, false, \ 2656 "counts jni method invocations") \ 2657 \ 2658 notproduct(bool, CountJVMCalls, false, \ 2659 "counts jvm method invocations") \ 2660 \ 2661 notproduct(bool, CountRemovableExceptions, false, \ 2662 "count exceptions that could be replaced by branches due to " \ 2663 "inlining") \ 2664 \ 2665 notproduct(bool, ICMissHistogram, false, \ 2666 "produce histogram of IC misses") \ 2667 \ 2668 notproduct(bool, PrintClassStatistics, false, \ 2669 "prints class statistics at end of run") \ 2670 \ 2671 notproduct(bool, PrintMethodStatistics, false, \ 2672 "prints method statistics at end of run") \ 2673 \ 2674 /* interpreter */ \ 2675 develop(bool, ClearInterpreterLocals, false, \ 2676 "Always clear local variables of interpreter activations upon " \ 2677 "entry") \ 2678 \ 2679 product_pd(bool, RewriteBytecodes, \ 2680 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2681 \ 2682 product_pd(bool, RewriteFrequentPairs, \ 2683 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2684 \ 2685 diagnostic(bool, PrintInterpreter, false, \ 2686 "Prints the generated interpreter code") \ 2687 \ 2688 product(bool, UseInterpreter, true, \ 2689 "Use interpreter for non-compiled methods") \ 2690 \ 2691 develop(bool, UseFastSignatureHandlers, true, \ 2692 "Use fast signature handlers for native calls") \ 2693 \ 2694 product(bool, UseLoopCounter, true, \ 2695 "Increment invocation counter on backward branch") \ 2696 \ 2697 product(bool, UseFastEmptyMethods, true, \ 2698 "Use fast method entry code for empty methods") \ 2699 \ 2700 product(bool, UseFastAccessorMethods, true, \ 2701 "Use fast method entry code for accessor methods") \ 2702 \ 2703 product_pd(bool, UseOnStackReplacement, \ 2704 "Use on stack replacement, calls runtime if invoc. counter " \ 2705 "overflows in loop") \ 2706 \ 2707 notproduct(bool, TraceOnStackReplacement, false, \ 2708 "Trace on stack replacement") \ 2709 \ 2710 product_pd(bool, PreferInterpreterNativeStubs, \ 2711 "Use always interpreter stubs for native methods invoked via " \ 2712 "interpreter") \ 2713 \ 2714 develop(bool, CountBytecodes, false, \ 2715 "Count number of bytecodes executed") \ 2716 \ 2717 develop(bool, PrintBytecodeHistogram, false, \ 2718 "Print histogram of the executed bytecodes") \ 2719 \ 2720 develop(bool, PrintBytecodePairHistogram, false, \ 2721 "Print histogram of the executed bytecode pairs") \ 2722 \ 2723 diagnostic(bool, PrintSignatureHandlers, false, \ 2724 "Print code generated for native method signature handlers") \ 2725 \ 2726 develop(bool, VerifyOops, false, \ 2727 "Do plausibility checks for oops") \ 2728 \ 2729 develop(bool, CheckUnhandledOops, false, \ 2730 "Check for unhandled oops in VM code") \ 2731 \ 2732 develop(bool, VerifyJNIFields, trueInDebug, \ 2733 "Verify jfieldIDs for instance fields") \ 2734 \ 2735 notproduct(bool, VerifyJNIEnvThread, false, \ 2736 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2737 "from JNI") \ 2738 \ 2739 develop(bool, VerifyFPU, false, \ 2740 "Verify FPU state (check for NaN's, etc.)") \ 2741 \ 2742 develop(bool, VerifyThread, false, \ 2743 "Watch the thread register for corruption (SPARC only)") \ 2744 \ 2745 develop(bool, VerifyActivationFrameSize, false, \ 2746 "Verify that activation frame didn't become smaller than its " \ 2747 "minimal size") \ 2748 \ 2749 develop(bool, TraceFrequencyInlining, false, \ 2750 "Trace frequency based inlining") \ 2751 \ 2752 develop_pd(bool, InlineIntrinsics, \ 2753 "Inline intrinsics that can be statically resolved") \ 2754 \ 2755 product_pd(bool, ProfileInterpreter, \ 2756 "Profile at the bytecode level during interpretation") \ 2757 \ 2758 develop_pd(bool, ProfileTraps, \ 2759 "Profile deoptimization traps at the bytecode level") \ 2760 \ 2761 product(intx, ProfileMaturityPercentage, 20, \ 2762 "number of method invocations/branches (expressed as % of " \ 2763 "CompileThreshold) before using the method's profile") \ 2764 \ 2765 develop(bool, PrintMethodData, false, \ 2766 "Print the results of +ProfileInterpreter at end of run") \ 2767 \ 2768 develop(bool, VerifyDataPointer, trueInDebug, \ 2769 "Verify the method data pointer during interpreter profiling") \ 2770 \ 2771 develop(bool, VerifyCompiledCode, false, \ 2772 "Include miscellaneous runtime verifications in nmethod code; " \ 2773 "default off because it disturbs nmethod size heuristics") \ 2774 \ 2775 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 2776 "Manually make GC thread crash then dump java stack trace; " \ 2777 "Test only") \ 2778 \ 2779 /* compilation */ \ 2780 product(bool, UseCompiler, true, \ 2781 "use compilation") \ 2782 \ 2783 develop(bool, TraceCompilationPolicy, false, \ 2784 "Trace compilation policy") \ 2785 \ 2786 develop(bool, TimeCompilationPolicy, false, \ 2787 "Time the compilation policy") \ 2788 \ 2789 product(bool, UseCounterDecay, true, \ 2790 "adjust recompilation counters") \ 2791 \ 2792 develop(intx, CounterHalfLifeTime, 30, \ 2793 "half-life time of invocation counters (in secs)") \ 2794 \ 2795 develop(intx, CounterDecayMinIntervalLength, 500, \ 2796 "Min. ms. between invocation of CounterDecay") \ 2797 \ 2798 product(bool, AlwaysCompileLoopMethods, false, \ 2799 "when using recompilation, never interpret methods " \ 2800 "containing loops") \ 2801 \ 2802 product(bool, DontCompileHugeMethods, true, \ 2803 "don't compile methods > HugeMethodLimit") \ 2804 \ 2805 /* Bytecode escape analysis estimation. */ \ 2806 product(bool, EstimateArgEscape, true, \ 2807 "Analyze bytecodes to estimate escape state of arguments") \ 2808 \ 2809 product(intx, BCEATraceLevel, 0, \ 2810 "How much tracing to do of bytecode escape analysis estimates") \ 2811 \ 2812 product(intx, MaxBCEAEstimateLevel, 5, \ 2813 "Maximum number of nested calls that are analyzed by BC EA.") \ 2814 \ 2815 product(intx, MaxBCEAEstimateSize, 150, \ 2816 "Maximum bytecode size of a method to be analyzed by BC EA.") \ 2817 \ 2818 product(intx, AllocatePrefetchStyle, 1, \ 2819 "0 = no prefetch, " \ 2820 "1 = prefetch instructions for each allocation, " \ 2821 "2 = use TLAB watermark to gate allocation prefetch, " \ 2822 "3 = use BIS instruction on Sparc for allocation prefetch") \ 2823 \ 2824 product(intx, AllocatePrefetchDistance, -1, \ 2825 "Distance to prefetch ahead of allocation pointer") \ 2826 \ 2827 product(intx, AllocatePrefetchLines, 3, \ 2828 "Number of lines to prefetch ahead of array allocation pointer") \ 2829 \ 2830 product(intx, AllocateInstancePrefetchLines, 1, \ 2831 "Number of lines to prefetch ahead of instance allocation pointer") \ 2832 \ 2833 product(intx, AllocatePrefetchStepSize, 16, \ 2834 "Step size in bytes of sequential prefetch instructions") \ 2835 \ 2836 product(intx, AllocatePrefetchInstr, 0, \ 2837 "Prefetch instruction to prefetch ahead of allocation pointer") \ 2838 \ 2839 /* deoptimization */ \ 2840 develop(bool, TraceDeoptimization, false, \ 2841 "Trace deoptimization") \ 2842 \ 2843 develop(bool, DebugDeoptimization, false, \ 2844 "Tracing various information while debugging deoptimization") \ 2845 \ 2846 product(intx, SelfDestructTimer, 0, \ 2847 "Will cause VM to terminate after a given time (in minutes) " \ 2848 "(0 means off)") \ 2849 \ 2850 product(intx, MaxJavaStackTraceDepth, 1024, \ 2851 "Max. no. of lines in the stack trace for Java exceptions " \ 2852 "(0 means all)") \ 2853 \ 2854 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 2855 "Guarantee a safepoint (at least) every so many milliseconds " \ 2856 "(0 means none)")) \ 2857 \ 2858 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ 2859 "Guarantee a safepoint (at least) every so many milliseconds " \ 2860 "(0 means none)")) \ 2861 \ 2862 product(intx, SafepointTimeoutDelay, 10000, \ 2863 "Delay in milliseconds for option SafepointTimeout") \ 2864 \ 2865 product(intx, NmethodSweepFraction, 16, \ 2866 "Number of invocations of sweeper to cover all nmethods") \ 2867 \ 2868 product(intx, NmethodSweepCheckInterval, 5, \ 2869 "Compilers wake up every n seconds to possibly sweep nmethods") \ 2870 \ 2871 product(intx, NmethodSweepActivity, 10, \ 2872 "Removes cold nmethods from code cache if > 0. Higher values " \ 2873 "result in more aggressive sweeping") \ 2874 \ 2875 notproduct(bool, LogSweeper, false, \ 2876 "Keep a ring buffer of sweeper activity") \ 2877 \ 2878 notproduct(intx, SweeperLogEntries, 1024, \ 2879 "Number of records in the ring buffer of sweeper activity") \ 2880 \ 2881 notproduct(intx, MemProfilingInterval, 500, \ 2882 "Time between each invocation of the MemProfiler") \ 2883 \ 2884 develop(intx, MallocCatchPtr, -1, \ 2885 "Hit breakpoint when mallocing/freeing this pointer") \ 2886 \ 2887 notproduct(intx, AssertRepeat, 1, \ 2888 "number of times to evaluate expression in assert " \ 2889 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ 2890 \ 2891 notproduct(ccstrlist, SuppressErrorAt, "", \ 2892 "List of assertions (file:line) to muzzle") \ 2893 \ 2894 notproduct(uintx, HandleAllocationLimit, 1024, \ 2895 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 2896 "is used") \ 2897 \ 2898 develop(uintx, TotalHandleAllocationLimit, 1024, \ 2899 "Threshold for total handle allocation when " \ 2900 "+TraceHandleAllocation is used") \ 2901 \ 2902 develop(intx, StackPrintLimit, 100, \ 2903 "number of stack frames to print in VM-level stack dump") \ 2904 \ 2905 notproduct(intx, MaxElementPrintSize, 256, \ 2906 "maximum number of elements to print") \ 2907 \ 2908 notproduct(intx, MaxSubklassPrintSize, 4, \ 2909 "maximum number of subklasses to print when printing klass") \ 2910 \ 2911 product(intx, MaxInlineLevel, 9, \ 2912 "maximum number of nested calls that are inlined") \ 2913 \ 2914 product(intx, MaxRecursiveInlineLevel, 1, \ 2915 "maximum number of nested recursive calls that are inlined") \ 2916 \ 2917 product_pd(intx, InlineSmallCode, \ 2918 "Only inline already compiled methods if their code size is " \ 2919 "less than this") \ 2920 \ 2921 product(intx, MaxInlineSize, 35, \ 2922 "maximum bytecode size of a method to be inlined") \ 2923 \ 2924 product_pd(intx, FreqInlineSize, \ 2925 "maximum bytecode size of a frequent method to be inlined") \ 2926 \ 2927 product(intx, MaxTrivialSize, 6, \ 2928 "maximum bytecode size of a trivial method to be inlined") \ 2929 \ 2930 product(intx, MinInliningThreshold, 250, \ 2931 "min. invocation count a method needs to have to be inlined") \ 2932 \ 2933 develop(intx, MethodHistogramCutoff, 100, \ 2934 "cutoff value for method invoc. histogram (+CountCalls)") \ 2935 \ 2936 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2937 "# of interpreted methods to show in profile") \ 2938 \ 2939 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 2940 "# of compiled methods to show in profile") \ 2941 \ 2942 develop(intx, ProfilerNumberOfStubMethods, 25, \ 2943 "# of stub methods to show in profile") \ 2944 \ 2945 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2946 "# of runtime stub nodes to show in profile") \ 2947 \ 2948 product(intx, ProfileIntervalsTicks, 100, \ 2949 "# of ticks between printing of interval profile " \ 2950 "(+ProfileIntervals)") \ 2951 \ 2952 notproduct(intx, ScavengeALotInterval, 1, \ 2953 "Interval between which scavenge will occur with +ScavengeALot") \ 2954 \ 2955 notproduct(intx, FullGCALotInterval, 1, \ 2956 "Interval between which full gc will occur with +FullGCALot") \ 2957 \ 2958 notproduct(intx, FullGCALotStart, 0, \ 2959 "For which invocation to start FullGCAlot") \ 2960 \ 2961 notproduct(intx, FullGCALotDummies, 32*K, \ 2962 "Dummy object allocated with +FullGCALot, forcing all objects " \ 2963 "to move") \ 2964 \ 2965 develop(intx, DontYieldALotInterval, 10, \ 2966 "Interval between which yields will be dropped (milliseconds)") \ 2967 \ 2968 develop(intx, MinSleepInterval, 1, \ 2969 "Minimum sleep() interval (milliseconds) when " \ 2970 "ConvertSleepToYield is off (used for SOLARIS)") \ 2971 \ 2972 develop(intx, ProfilerPCTickThreshold, 15, \ 2973 "Number of ticks in a PC buckets to be a hotspot") \ 2974 \ 2975 notproduct(intx, DeoptimizeALotInterval, 5, \ 2976 "Number of exits until DeoptimizeALot kicks in") \ 2977 \ 2978 notproduct(intx, ZombieALotInterval, 5, \ 2979 "Number of exits until ZombieALot kicks in") \ 2980 \ 2981 develop(bool, StressNonEntrant, false, \ 2982 "Mark nmethods non-entrant at registration") \ 2983 \ 2984 diagnostic(intx, MallocVerifyInterval, 0, \ 2985 "if non-zero, verify C heap after every N calls to " \ 2986 "malloc/realloc/free") \ 2987 \ 2988 diagnostic(intx, MallocVerifyStart, 0, \ 2989 "if non-zero, start verifying C heap after Nth call to " \ 2990 "malloc/realloc/free") \ 2991 \ 2992 diagnostic(uintx, MallocMaxTestWords, 0, \ 2993 "if non-zero, max # of Words that malloc/realloc can allocate " \ 2994 "(for testing only)") \ 2995 \ 2996 product(intx, TypeProfileWidth, 2, \ 2997 "number of receiver types to record in call/cast profile") \ 2998 \ 2999 develop(intx, BciProfileWidth, 2, \ 3000 "number of return bci's to record in ret profile") \ 3001 \ 3002 product(intx, PerMethodRecompilationCutoff, 400, \ 3003 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 3004 \ 3005 product(intx, PerBytecodeRecompilationCutoff, 200, \ 3006 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 3007 \ 3008 product(intx, PerMethodTrapLimit, 100, \ 3009 "Limit on traps (of one kind) in a method (includes inlines)") \ 3010 \ 3011 product(intx, PerBytecodeTrapLimit, 4, \ 3012 "Limit on traps (of one kind) at a particular BCI") \ 3013 \ 3014 develop(intx, InlineFrequencyRatio, 20, \ 3015 "Ratio of call site execution to caller method invocation") \ 3016 \ 3017 develop_pd(intx, InlineFrequencyCount, \ 3018 "Count of call site execution necessary to trigger frequent " \ 3019 "inlining") \ 3020 \ 3021 develop(intx, InlineThrowCount, 50, \ 3022 "Force inlining of interpreted methods that throw this often") \ 3023 \ 3024 develop(intx, InlineThrowMaxSize, 200, \ 3025 "Force inlining of throwing methods smaller than this") \ 3026 \ 3027 develop(intx, ProfilerNodeSize, 1024, \ 3028 "Size in K to allocate for the Profile Nodes of each thread") \ 3029 \ 3030 product_pd(intx, PreInflateSpin, \ 3031 "Number of times to spin wait before inflation") \ 3032 \ 3033 /* gc parameters */ \ 3034 product(uintx, InitialHeapSize, 0, \ 3035 "Initial heap size (in bytes); zero means use ergonomics") \ 3036 \ 3037 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ 3038 "Maximum heap size (in bytes)") \ 3039 \ 3040 product(uintx, OldSize, ScaleForWordSize(4*M), \ 3041 "Initial tenured generation size (in bytes)") \ 3042 \ 3043 product(uintx, NewSize, ScaleForWordSize(1*M), \ 3044 "Initial new generation size (in bytes)") \ 3045 \ 3046 product(uintx, MaxNewSize, max_uintx, \ 3047 "Maximum new generation size (in bytes), max_uintx means set " \ 3048 "ergonomically") \ 3049 \ 3050 product(uintx, PretenureSizeThreshold, 0, \ 3051 "Maximum size in bytes of objects allocated in DefNew " \ 3052 "generation; zero means no maximum") \ 3053 \ 3054 product(uintx, TLABSize, 0, \ 3055 "Starting TLAB size (in bytes); zero means set ergonomically") \ 3056 \ 3057 product(uintx, MinTLABSize, 2*K, \ 3058 "Minimum allowed TLAB size (in bytes)") \ 3059 \ 3060 product(uintx, TLABAllocationWeight, 35, \ 3061 "Allocation averaging weight") \ 3062 \ 3063 product(uintx, TLABWasteTargetPercent, 1, \ 3064 "Percentage of Eden that can be wasted") \ 3065 \ 3066 product(uintx, TLABRefillWasteFraction, 64, \ 3067 "Max TLAB waste at a refill (internal fragmentation)") \ 3068 \ 3069 product(uintx, TLABWasteIncrement, 4, \ 3070 "Increment allowed waste at slow allocation") \ 3071 \ 3072 product(uintx, SurvivorRatio, 8, \ 3073 "Ratio of eden/survivor space size") \ 3074 \ 3075 product(uintx, NewRatio, 2, \ 3076 "Ratio of new/old generation sizes") \ 3077 \ 3078 product_pd(uintx, NewSizeThreadIncrease, \ 3079 "Additional size added to desired new generation size per " \ 3080 "non-daemon thread (in bytes)") \ 3081 \ 3082 product_pd(uintx, MetaspaceSize, \ 3083 "Initial size of Metaspaces (in bytes)") \ 3084 \ 3085 product(uintx, MaxMetaspaceSize, max_uintx, \ 3086 "Maximum size of Metaspaces (in bytes)") \ 3087 \ 3088 product(uintx, CompressedClassSpaceSize, 1*G, \ 3089 "Maximum size of class area in Metaspace when compressed " \ 3090 "class pointers are used") \ 3091 \ 3092 product(uintx, MinHeapFreeRatio, 40, \ 3093 "Min percentage of heap free after GC to avoid expansion") \ 3094 \ 3095 product(uintx, MaxHeapFreeRatio, 70, \ 3096 "Max percentage of heap free after GC to avoid shrinking") \ 3097 \ 3098 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 3099 "Number of milliseconds per MB of free space in the heap") \ 3100 \ 3101 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 3102 "Min change in heap space due to GC (in bytes)") \ 3103 \ 3104 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 3105 "Min expansion of Metaspace (in bytes)") \ 3106 \ 3107 product(uintx, MinMetaspaceFreeRatio, 40, \ 3108 "Min percentage of Metaspace free after GC to avoid expansion") \ 3109 \ 3110 product(uintx, MaxMetaspaceFreeRatio, 70, \ 3111 "Max percentage of Metaspace free after GC to avoid shrinking") \ 3112 \ 3113 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3114 "Max expansion of Metaspace without full GC (in bytes)") \ 3115 \ 3116 product(uintx, QueuedAllocationWarningCount, 0, \ 3117 "Number of times an allocation that queues behind a GC " \ 3118 "will retry before printing a warning") \ 3119 \ 3120 diagnostic(uintx, VerifyGCStartAt, 0, \ 3121 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3122 \ 3123 diagnostic(intx, VerifyGCLevel, 0, \ 3124 "Generation level at which to start +VerifyBefore/AfterGC") \ 3125 \ 3126 product(uintx, MaxTenuringThreshold, 15, \ 3127 "Maximum value for tenuring threshold") \ 3128 \ 3129 product(uintx, InitialTenuringThreshold, 7, \ 3130 "Initial value for tenuring threshold") \ 3131 \ 3132 product(uintx, TargetSurvivorRatio, 50, \ 3133 "Desired percentage of survivor space used after scavenge") \ 3134 \ 3135 product(uintx, MarkSweepDeadRatio, 5, \ 3136 "Percentage (0-100) of the old gen allowed as dead wood." \ 3137 "Serial mark sweep treats this as both the min and max value." \ 3138 "CMS uses this value only if it falls back to mark sweep." \ 3139 "Par compact uses a variable scale based on the density of the" \ 3140 "generation and treats this as the max value when the heap is" \ 3141 "either completely full or completely empty. Par compact also" \ 3142 "has a smaller default value; see arguments.cpp.") \ 3143 \ 3144 product(uintx, MarkSweepAlwaysCompactCount, 4, \ 3145 "How often should we fully compact the heap (ignoring the dead " \ 3146 "space parameters)") \ 3147 \ 3148 product(intx, PrintCMSStatistics, 0, \ 3149 "Statistics for CMS") \ 3150 \ 3151 product(bool, PrintCMSInitiationStatistics, false, \ 3152 "Statistics for initiating a CMS collection") \ 3153 \ 3154 product(intx, PrintFLSStatistics, 0, \ 3155 "Statistics for CMS' FreeListSpace") \ 3156 \ 3157 product(intx, PrintFLSCensus, 0, \ 3158 "Census for CMS' FreeListSpace") \ 3159 \ 3160 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 3161 "Delay in ms between expansion and allocation") \ 3162 \ 3163 develop(uintx, GCWorkerDelayMillis, 0, \ 3164 "Delay in ms in scheduling GC workers") \ 3165 \ 3166 product(intx, DeferThrSuspendLoopCount, 4000, \ 3167 "(Unstable) Number of times to iterate in safepoint loop " \ 3168 " before blocking VM threads ") \ 3169 \ 3170 product(intx, DeferPollingPageLoopCount, -1, \ 3171 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 3172 "before changing safepoint polling page to RO ") \ 3173 \ 3174 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 3175 \ 3176 product(bool, PSChunkLargeArrays, true, \ 3177 "true: process large arrays in chunks") \ 3178 \ 3179 product(uintx, GCDrainStackTargetSize, 64, \ 3180 "how many entries we'll try to leave on the stack during " \ 3181 "parallel GC") \ 3182 \ 3183 /* stack parameters */ \ 3184 product_pd(intx, StackYellowPages, \ 3185 "Number of yellow zone (recoverable overflows) pages") \ 3186 \ 3187 product_pd(intx, StackRedPages, \ 3188 "Number of red zone (unrecoverable overflows) pages") \ 3189 \ 3190 product_pd(intx, StackShadowPages, \ 3191 "Number of shadow zone (for overflow checking) pages" \ 3192 " this should exceed the depth of the VM and native call stack") \ 3193 \ 3194 product_pd(intx, ThreadStackSize, \ 3195 "Thread Stack Size (in Kbytes)") \ 3196 \ 3197 product_pd(intx, VMThreadStackSize, \ 3198 "Non-Java Thread Stack Size (in Kbytes)") \ 3199 \ 3200 product_pd(intx, CompilerThreadStackSize, \ 3201 "Compiler Thread Stack Size (in Kbytes)") \ 3202 \ 3203 develop_pd(uintx, JVMInvokeMethodSlack, \ 3204 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 3205 \ 3206 product(uintx, ThreadSafetyMargin, 50*M, \ 3207 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ 3208 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ 3209 "disable this feature") \ 3210 \ 3211 /* code cache parameters */ \ 3212 develop(uintx, CodeCacheSegmentSize, 64, \ 3213 "Code cache segment size (in bytes) - smallest unit of " \ 3214 "allocation") \ 3215 \ 3216 develop_pd(intx, CodeEntryAlignment, \ 3217 "Code entry alignment for generated code (in bytes)") \ 3218 \ 3219 product_pd(intx, OptoLoopAlignment, \ 3220 "Align inner loops to zero relative to this modulus") \ 3221 \ 3222 product_pd(uintx, InitialCodeCacheSize, \ 3223 "Initial code cache size (in bytes)") \ 3224 \ 3225 develop_pd(uintx, CodeCacheMinimumUseSpace, \ 3226 "Minimum code cache size (in bytes) required to start VM.") \ 3227 \ 3228 product_pd(uintx, ReservedCodeCacheSize, \ 3229 "Reserved code cache size (in bytes) - maximum code cache size") \ 3230 \ 3231 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ 3232 "When less than X space left, we stop compiling.") \ 3233 \ 3234 product_pd(uintx, CodeCacheExpansionSize, \ 3235 "Code cache expansion size (in bytes)") \ 3236 \ 3237 develop_pd(uintx, CodeCacheMinBlockLength, \ 3238 "Minimum number of segments in a code cache block.") \ 3239 \ 3240 notproduct(bool, ExitOnFullCodeCache, false, \ 3241 "Exit the VM if we fill the code cache.") \ 3242 \ 3243 product(bool, UseCodeCacheFlushing, true, \ 3244 "Attempt to clean the code cache before shutting off compiler") \ 3245 \ 3246 /* interpreter debugging */ \ 3247 develop(intx, BinarySwitchThreshold, 5, \ 3248 "Minimal number of lookupswitch entries for rewriting to binary " \ 3249 "switch") \ 3250 \ 3251 develop(intx, StopInterpreterAt, 0, \ 3252 "Stops interpreter execution at specified bytecode number") \ 3253 \ 3254 develop(intx, TraceBytecodesAt, 0, \ 3255 "Traces bytecodes starting with specified bytecode number") \ 3256 \ 3257 /* compiler interface */ \ 3258 develop(intx, CIStart, 0, \ 3259 "the id of the first compilation to permit") \ 3260 \ 3261 develop(intx, CIStop, -1, \ 3262 "the id of the last compilation to permit") \ 3263 \ 3264 develop(intx, CIStartOSR, 0, \ 3265 "the id of the first osr compilation to permit " \ 3266 "(CICountOSR must be on)") \ 3267 \ 3268 develop(intx, CIStopOSR, -1, \ 3269 "the id of the last osr compilation to permit " \ 3270 "(CICountOSR must be on)") \ 3271 \ 3272 develop(intx, CIBreakAtOSR, -1, \ 3273 "id of osr compilation to break at") \ 3274 \ 3275 develop(intx, CIBreakAt, -1, \ 3276 "id of compilation to break at") \ 3277 \ 3278 product(ccstrlist, CompileOnly, "", \ 3279 "List of methods (pkg/class.name) to restrict compilation to") \ 3280 \ 3281 product(ccstr, CompileCommandFile, NULL, \ 3282 "Read compiler commands from this file [.hotspot_compiler]") \ 3283 \ 3284 product(ccstrlist, CompileCommand, "", \ 3285 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3286 \ 3287 develop(bool, ReplayCompiles, false, \ 3288 "Enable replay of compilations from ReplayDataFile") \ 3289 \ 3290 product(ccstr, ReplayDataFile, NULL, \ 3291 "File containing compilation replay information" \ 3292 "[default: ./replay_pid%p.log] (%p replaced with pid)") \ 3293 \ 3294 develop(intx, ReplaySuppressInitializers, 2, \ 3295 "Controls handling of class initialization during replay" \ 3296 "0 - don't do anything special" \ 3297 "1 - treat all class initializers as empty" \ 3298 "2 - treat class initializers for application classes as empty" \ 3299 "3 - allow all class initializers to run during bootstrap but" \ 3300 " pretend they are empty after starting replay") \ 3301 \ 3302 develop(bool, ReplayIgnoreInitErrors, false, \ 3303 "Ignore exceptions thrown during initialization for replay") \ 3304 \ 3305 product(bool, DumpReplayDataOnError, true, \ 3306 "Record replay data for crashing compiler threads") \ 3307 \ 3308 product(bool, CICompilerCountPerCPU, false, \ 3309 "1 compiler thread for log(N CPUs)") \ 3310 \ 3311 develop(intx, CIFireOOMAt, -1, \ 3312 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3313 "(non-negative value throws OOM after this many CI accesses " \ 3314 "in each compile)") \ 3315 notproduct(intx, CICrashAt, -1, \ 3316 "id of compilation to trigger assert in compiler thread for " \ 3317 "the purpose of testing, e.g. generation of replay data") \ 3318 notproduct(bool, CIObjectFactoryVerify, false, \ 3319 "enable potentially expensive verification in ciObjectFactory") \ 3320 \ 3321 /* Priorities */ \ 3322 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3323 \ 3324 product(intx, ThreadPriorityPolicy, 0, \ 3325 "0 : Normal. "\ 3326 " VM chooses priorities that are appropriate for normal "\ 3327 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3328 " to normal native priority. Java priorities below NORM_PRIORITY"\ 3329 " map to lower native priority values. On Windows applications"\ 3330 " are allowed to use higher native priorities. However, with "\ 3331 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ 3332 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ 3333 " interfere with system threads. On Linux thread priorities "\ 3334 " are ignored because the OS does not support static priority "\ 3335 " in SCHED_OTHER scheduling class which is the only choice for"\ 3336 " non-root, non-realtime applications. "\ 3337 "1 : Aggressive. "\ 3338 " Java thread priorities map over to the entire range of "\ 3339 " native thread priorities. Higher Java thread priorities map "\ 3340 " to higher native thread priorities. This policy should be "\ 3341 " used with care, as sometimes it can cause performance "\ 3342 " degradation in the application and/or the entire system. On "\ 3343 " Linux this policy requires root privilege.") \ 3344 \ 3345 product(bool, ThreadPriorityVerbose, false, \ 3346 "Print priority changes") \ 3347 \ 3348 product(intx, DefaultThreadPriority, -1, \ 3349 "The native priority at which threads run if not elsewhere " \ 3350 "specified (-1 means no change)") \ 3351 \ 3352 product(intx, CompilerThreadPriority, -1, \ 3353 "The native priority at which compiler threads should run " \ 3354 "(-1 means no change)") \ 3355 \ 3356 product(intx, VMThreadPriority, -1, \ 3357 "The native priority at which the VM thread should run " \ 3358 "(-1 means no change)") \ 3359 \ 3360 product(bool, CompilerThreadHintNoPreempt, true, \ 3361 "(Solaris only) Give compiler threads an extra quanta") \ 3362 \ 3363 product(bool, VMThreadHintNoPreempt, false, \ 3364 "(Solaris only) Give VM thread an extra quanta") \ 3365 \ 3366 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3367 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3368 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3369 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3370 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3371 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3372 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3373 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3374 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3375 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ 3376 \ 3377 experimental(bool, UseCriticalJavaThreadPriority, false, \ 3378 "Java thread priority 10 maps to critical scheduling priority") \ 3379 \ 3380 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 3381 "Compiler thread(s) run at critical scheduling priority") \ 3382 \ 3383 experimental(bool, UseCriticalCMSThreadPriority, false, \ 3384 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 3385 \ 3386 /* compiler debugging */ \ 3387 notproduct(intx, CompileTheWorldStartAt, 1, \ 3388 "First class to consider when using +CompileTheWorld") \ 3389 \ 3390 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3391 "Last class to consider when using +CompileTheWorld") \ 3392 \ 3393 develop(intx, NewCodeParameter, 0, \ 3394 "Testing Only: Create a dedicated integer parameter before " \ 3395 "putback") \ 3396 \ 3397 /* new oopmap storage allocation */ \ 3398 develop(intx, MinOopMapAllocation, 8, \ 3399 "Minimum number of OopMap entries in an OopMapSet") \ 3400 \ 3401 /* Background Compilation */ \ 3402 develop(intx, LongCompileThreshold, 50, \ 3403 "Used with +TraceLongCompiles") \ 3404 \ 3405 product(intx, StarvationMonitorInterval, 200, \ 3406 "Pause between each check in ms") \ 3407 \ 3408 /* recompilation */ \ 3409 product_pd(intx, CompileThreshold, \ 3410 "number of interpreted method invocations before (re-)compiling") \ 3411 \ 3412 product_pd(intx, BackEdgeThreshold, \ 3413 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ 3414 \ 3415 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 3416 "Interpreter (tier 0) invocation notification frequency.") \ 3417 \ 3418 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 3419 "C1 without MDO (tier 2) invocation notification frequency.") \ 3420 \ 3421 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 3422 "C1 with MDO profiling (tier 3) invocation notification " \ 3423 "frequency.") \ 3424 \ 3425 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 3426 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 3427 \ 3428 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 3429 "Interpreter (tier 0) invocation notification frequency.") \ 3430 \ 3431 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 3432 "C1 without MDO (tier 2) invocation notification frequency.") \ 3433 \ 3434 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 3435 "C1 with MDO profiling (tier 3) invocation notification " \ 3436 "frequency.") \ 3437 \ 3438 product(intx, Tier2CompileThreshold, 0, \ 3439 "threshold at which tier 2 compilation is invoked") \ 3440 \ 3441 product(intx, Tier2BackEdgeThreshold, 0, \ 3442 "Back edge threshold at which tier 2 compilation is invoked") \ 3443 \ 3444 product(intx, Tier3InvocationThreshold, 200, \ 3445 "Compile if number of method invocations crosses this " \ 3446 "threshold") \ 3447 \ 3448 product(intx, Tier3MinInvocationThreshold, 100, \ 3449 "Minimum invocation to compile at tier 3") \ 3450 \ 3451 product(intx, Tier3CompileThreshold, 2000, \ 3452 "Threshold at which tier 3 compilation is invoked (invocation " \ 3453 "minimum must be satisfied.") \ 3454 \ 3455 product(intx, Tier3BackEdgeThreshold, 60000, \ 3456 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 3457 \ 3458 product(intx, Tier4InvocationThreshold, 5000, \ 3459 "Compile if number of method invocations crosses this " \ 3460 "threshold") \ 3461 \ 3462 product(intx, Tier4MinInvocationThreshold, 600, \ 3463 "Minimum invocation to compile at tier 4") \ 3464 \ 3465 product(intx, Tier4CompileThreshold, 15000, \ 3466 "Threshold at which tier 4 compilation is invoked (invocation " \ 3467 "minimum must be satisfied.") \ 3468 \ 3469 product(intx, Tier4BackEdgeThreshold, 40000, \ 3470 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 3471 \ 3472 product(intx, Tier3DelayOn, 5, \ 3473 "If C2 queue size grows over this amount per compiler thread " \ 3474 "stop compiling at tier 3 and start compiling at tier 2") \ 3475 \ 3476 product(intx, Tier3DelayOff, 2, \ 3477 "If C2 queue size is less than this amount per compiler thread " \ 3478 "allow methods compiled at tier 2 transition to tier 3") \ 3479 \ 3480 product(intx, Tier3LoadFeedback, 5, \ 3481 "Tier 3 thresholds will increase twofold when C1 queue size " \ 3482 "reaches this amount per compiler thread") \ 3483 \ 3484 product(intx, Tier4LoadFeedback, 3, \ 3485 "Tier 4 thresholds will increase twofold when C2 queue size " \ 3486 "reaches this amount per compiler thread") \ 3487 \ 3488 product(intx, TieredCompileTaskTimeout, 50, \ 3489 "Kill compile task if method was not used within " \ 3490 "given timeout in milliseconds") \ 3491 \ 3492 product(intx, TieredStopAtLevel, 4, \ 3493 "Stop at given compilation level") \ 3494 \ 3495 product(intx, Tier0ProfilingStartPercentage, 200, \ 3496 "Start profiling in interpreter if the counters exceed tier 3" \ 3497 "thresholds by the specified percentage") \ 3498 \ 3499 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ 3500 "Increase the compile threshold for C1 compilation if the code" \ 3501 "cache is filled by the specified percentage.") \ 3502 \ 3503 product(intx, TieredRateUpdateMinTime, 1, \ 3504 "Minimum rate sampling interval (in milliseconds)") \ 3505 \ 3506 product(intx, TieredRateUpdateMaxTime, 25, \ 3507 "Maximum rate sampling interval (in milliseconds)") \ 3508 \ 3509 product_pd(bool, TieredCompilation, \ 3510 "Enable tiered compilation") \ 3511 \ 3512 product(bool, PrintTieredEvents, false, \ 3513 "Print tiered events notifications") \ 3514 \ 3515 product_pd(intx, OnStackReplacePercentage, \ 3516 "NON_TIERED number of method invocations/branches (expressed as %"\ 3517 "of CompileThreshold) before (re-)compiling OSR code") \ 3518 \ 3519 product(intx, InterpreterProfilePercentage, 33, \ 3520 "NON_TIERED number of method invocations/branches (expressed as %"\ 3521 "of CompileThreshold) before profiling in the interpreter") \ 3522 \ 3523 develop(intx, MaxRecompilationSearchLength, 10, \ 3524 "max. # frames to inspect searching for recompilee") \ 3525 \ 3526 develop(intx, MaxInterpretedSearchLength, 3, \ 3527 "max. # interp. frames to skip when searching for recompilee") \ 3528 \ 3529 develop(intx, DesiredMethodLimit, 8000, \ 3530 "desired max. method size (in bytecodes) after inlining") \ 3531 \ 3532 develop(intx, HugeMethodLimit, 8000, \ 3533 "don't compile methods larger than this if " \ 3534 "+DontCompileHugeMethods") \ 3535 \ 3536 /* New JDK 1.4 reflection implementation */ \ 3537 \ 3538 develop(bool, UseNewReflection, true, \ 3539 "Temporary flag for transition to reflection based on dynamic " \ 3540 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ 3541 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ 3542 "changes were needed") \ 3543 \ 3544 develop(bool, VerifyReflectionBytecodes, false, \ 3545 "Force verification of 1.4 reflection bytecodes. Does not work " \ 3546 "in situations like that described in 4486457 or for " \ 3547 "constructors generated for serialization, so can not be enabled "\ 3548 "in product.") \ 3549 \ 3550 product(bool, ReflectionWrapResolutionErrors, true, \ 3551 "Temporary flag for transition to AbstractMethodError wrapped " \ 3552 "in InvocationTargetException. See 6531596") \ 3553 \ 3554 develop(bool, VerifyLambdaBytecodes, false, \ 3555 "Force verification of jdk 8 lambda metafactory bytecodes.") \ 3556 \ 3557 develop(intx, FastSuperclassLimit, 8, \ 3558 "Depth of hardwired instanceof accelerator array") \ 3559 \ 3560 /* Properties for Java libraries */ \ 3561 \ 3562 product(uintx, MaxDirectMemorySize, 0, \ 3563 "Maximum total size of NIO direct-buffer allocations") \ 3564 \ 3565 /* temporary developer defined flags */ \ 3566 \ 3567 diagnostic(bool, UseNewCode, false, \ 3568 "Testing Only: Use the new version while testing") \ 3569 \ 3570 diagnostic(bool, UseNewCode2, false, \ 3571 "Testing Only: Use the new version while testing") \ 3572 \ 3573 diagnostic(bool, UseNewCode3, false, \ 3574 "Testing Only: Use the new version while testing") \ 3575 \ 3576 /* flags for performance data collection */ \ 3577 \ 3578 product(bool, UsePerfData, falseInEmbedded, \ 3579 "Flag to disable jvmstat instrumentation for performance testing" \ 3580 "and problem isolation purposes.") \ 3581 \ 3582 product(bool, PerfDataSaveToFile, false, \ 3583 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3584 \ 3585 product(ccstr, PerfDataSaveFile, NULL, \ 3586 "Save PerfData memory to the specified absolute pathname," \ 3587 "%p in the file name if present will be replaced by pid") \ 3588 \ 3589 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ 3590 "Data sampling interval in milliseconds") \ 3591 \ 3592 develop(bool, PerfTraceDataCreation, false, \ 3593 "Trace creation of Performance Data Entries") \ 3594 \ 3595 develop(bool, PerfTraceMemOps, false, \ 3596 "Trace PerfMemory create/attach/detach calls") \ 3597 \ 3598 product(bool, PerfDisableSharedMem, false, \ 3599 "Store performance data in standard memory") \ 3600 \ 3601 product(intx, PerfDataMemorySize, 32*K, \ 3602 "Size of performance data memory region. Will be rounded " \ 3603 "up to a multiple of the native os page size.") \ 3604 \ 3605 product(intx, PerfMaxStringConstLength, 1024, \ 3606 "Maximum PerfStringConstant string length before truncation") \ 3607 \ 3608 product(bool, PerfAllowAtExitRegistration, false, \ 3609 "Allow registration of atexit() methods") \ 3610 \ 3611 product(bool, PerfBypassFileSystemCheck, false, \ 3612 "Bypass Win32 file system criteria checks (Windows Only)") \ 3613 \ 3614 product(intx, UnguardOnExecutionViolation, 0, \ 3615 "Unguard page and retry on no-execute fault (Win32 only)" \ 3616 "0=off, 1=conservative, 2=aggressive") \ 3617 \ 3618 /* Serviceability Support */ \ 3619 \ 3620 product(bool, ManagementServer, false, \ 3621 "Create JMX Management Server") \ 3622 \ 3623 product(bool, DisableAttachMechanism, false, \ 3624 "Disable mechanism that allows tools to attach to this VM") \ 3625 \ 3626 product(bool, StartAttachListener, false, \ 3627 "Always start Attach Listener at VM startup") \ 3628 \ 3629 manageable(bool, PrintConcurrentLocks, false, \ 3630 "Print java.util.concurrent locks in thread dump") \ 3631 \ 3632 product(bool, TransmitErrorReport, false, \ 3633 "Enable error report transmission on erroneous termination") \ 3634 \ 3635 product(ccstr, ErrorReportServer, NULL, \ 3636 "Override built-in error report server address") \ 3637 \ 3638 /* Shared spaces */ \ 3639 \ 3640 product(bool, UseSharedSpaces, true, \ 3641 "Use shared spaces for metadata") \ 3642 \ 3643 product(bool, RequireSharedSpaces, false, \ 3644 "Require shared spaces for metadata") \ 3645 \ 3646 product(bool, DumpSharedSpaces, false, \ 3647 "Special mode: JVM reads a class list, loads classes, builds " \ 3648 "shared spaces, and dumps the shared spaces to a file to be " \ 3649 "used in future JVM runs.") \ 3650 \ 3651 product(bool, PrintSharedSpaces, false, \ 3652 "Print usage of shared spaces") \ 3653 \ 3654 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3655 "Size of read-write space for metadata (in bytes)") \ 3656 \ 3657 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3658 "Size of read-only space for metadata (in bytes)") \ 3659 \ 3660 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ 3661 "Size of the shared miscellaneous data area (in bytes)") \ 3662 \ 3663 product(uintx, SharedMiscCodeSize, 120*K, \ 3664 "Size of the shared miscellaneous code area (in bytes)") \ 3665 \ 3666 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \ 3667 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ 3668 "Address to allocate shared memory region for class data") \ 3669 \ 3670 diagnostic(bool, EnableInvokeDynamic, true, \ 3671 "support JSR 292 (method handles, invokedynamic, " \ 3672 "anonymous classes") \ 3673 \ 3674 diagnostic(bool, PrintMethodHandleStubs, false, \ 3675 "Print generated stub code for method handles") \ 3676 \ 3677 develop(bool, TraceMethodHandles, false, \ 3678 "trace internal method handle operations") \ 3679 \ 3680 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 3681 "perform extra checks when constructing method handles") \ 3682 \ 3683 diagnostic(bool, ShowHiddenFrames, false, \ 3684 "show method handle implementation frames (usually hidden)") \ 3685 \ 3686 experimental(bool, TrustFinalNonStaticFields, false, \ 3687 "trust final non-static declarations for constant folding") \ 3688 \ 3689 experimental(bool, FoldStableValues, false, \ 3690 "Private flag to control optimizations for stable variables") \ 3691 \ 3692 develop(bool, TraceInvokeDynamic, false, \ 3693 "trace internal invoke dynamic operations") \ 3694 \ 3695 diagnostic(bool, PauseAtStartup, false, \ 3696 "Causes the VM to pause at startup time and wait for the pause " \ 3697 "file to be removed (default: ./vm.paused.<pid>)") \ 3698 \ 3699 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3700 "The file to create and for whose removal to await when pausing " \ 3701 "at startup. (default: ./vm.paused.<pid>)") \ 3702 \ 3703 diagnostic(bool, PauseAtExit, false, \ 3704 "Pause and wait for keypress on exit if a debugger is attached") \ 3705 \ 3706 product(bool, ExtendedDTraceProbes, false, \ 3707 "Enable performance-impacting dtrace probes") \ 3708 \ 3709 product(bool, DTraceMethodProbes, false, \ 3710 "Enable dtrace probes for method-entry and method-exit") \ 3711 \ 3712 product(bool, DTraceAllocProbes, false, \ 3713 "Enable dtrace probes for object allocation") \ 3714 \ 3715 product(bool, DTraceMonitorProbes, false, \ 3716 "Enable dtrace probes for monitor events") \ 3717 \ 3718 product(bool, RelaxAccessControlCheck, false, \ 3719 "Relax the access control checks in the verifier") \ 3720 \ 3721 diagnostic(bool, PrintDTraceDOF, false, \ 3722 "Print the DTrace DOF passed to the system for JSDT probes") \ 3723 \ 3724 product(uintx, StringTableSize, defaultStringTableSize, \ 3725 "Number of buckets in the interned String table") \ 3726 \ 3727 develop(bool, TraceDefaultMethods, false, \ 3728 "Trace the default method processing steps") \ 3729 \ 3730 develop(bool, VerifyGenericSignatures, false, \ 3731 "Abort VM on erroneous or inconsistent generic signatures") \ 3732 \ 3733 product(bool, UseVMInterruptibleIO, false, \ 3734 "(Unstable, Solaris-specific) Thread interrupt before or with " \ 3735 "EINTR for I/O operations results in OS_INTRPT. The default value"\ 3736 " of this flag is true for JDK 6 and earlier") \ 3737 \ 3738 diagnostic(bool, WhiteBoxAPI, false, \ 3739 "Enable internal testing APIs") \ 3740 \ 3741 product(bool, PrintGCCause, true, \ 3742 "Include GC cause in GC logging") \ 3743 \ 3744 product(bool , AllowNonVirtualCalls, false, \ 3745 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \ 3746 \ 3747 diagnostic(ccstr, SharedArchiveFile, NULL, \ 3748 "Override the default location of the CDS archive file") \ 3749 \ 3750 experimental(uintx, ArrayAllocatorMallocLimit, \ 3751 SOLARIS_ONLY(64*K) NOT_SOLARIS(max_uintx), \ 3752 "Allocation less than this value will be allocated " \ 3753 "using malloc. Larger allocations will use mmap.") \ 3754 \ 3755 product(bool, EnableTracing, false, \ 3756 "Enable event-based tracing") \ 3757 product(bool, UseLockedTracing, false, \ 3758 "Use locked-tracing when doing event-based tracing") 3759 3760 3761/* 3762 * Macros for factoring of globals 3763 */ 3764 3765// Interface macros 3766#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3767#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 3768#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 3769#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 3770#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 3771#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 3772#ifdef PRODUCT 3773#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type CONST_##name; const type name = value; 3774#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type CONST_##name; const type name = pd_##name; 3775#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type CONST_##name; 3776#else 3777#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 3778#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 3779#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3780#endif 3781// Special LP64 flags, product only needed for now. 3782#ifdef _LP64 3783#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3784#else 3785#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 3786#endif // _LP64 3787 3788// Implementation macros 3789#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 3790#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 3791#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 3792#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 3793#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 3794#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 3795#ifdef PRODUCT 3796#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type CONST_##name = value; 3797#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type CONST_##name = pd_##name; 3798#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type CONST_##name = value; 3799#else 3800#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 3801#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 3802#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 3803#endif 3804#ifdef _LP64 3805#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 3806#else 3807#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 3808#endif // _LP64 3809 3810RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG, DECLARE_LP64_PRODUCT_FLAG) 3811 3812RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) 3813 3814ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) 3815 3816// Extensions 3817 3818#include "runtime/globals_ext.hpp" 3819 3820#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 3821