globals.hpp revision 5164:91b93f523ec6
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 197enum FlagValueOrigin { 198 DEFAULT = 0, 199 COMMAND_LINE = 1, 200 ENVIRON_VAR = 2, 201 CONFIG_FILE = 3, 202 MANAGEMENT = 4, 203 ERGONOMIC = 5, 204 ATTACH_ON_DEMAND = 6, 205 INTERNAL = 99 206}; 207 208struct Flag { 209 const char *type; 210 const char *name; 211 void* addr; 212 213 NOT_PRODUCT(const char *doc;) 214 215 const char *kind; 216 FlagValueOrigin origin; 217 218 // points to all Flags static array 219 static Flag *flags; 220 221 // number of flags 222 static size_t numFlags; 223 224 static Flag* find_flag(const char* name, size_t length, bool allow_locked = false); 225 static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false); 226 227 bool is_bool() const { return strcmp(type, "bool") == 0; } 228 bool get_bool() const { return *((bool*) addr); } 229 void set_bool(bool value) { *((bool*) addr) = value; } 230 231 bool is_intx() const { return strcmp(type, "intx") == 0; } 232 intx get_intx() const { return *((intx*) addr); } 233 void set_intx(intx value) { *((intx*) addr) = value; } 234 235 bool is_uintx() const { return strcmp(type, "uintx") == 0; } 236 uintx get_uintx() const { return *((uintx*) addr); } 237 void set_uintx(uintx value) { *((uintx*) addr) = value; } 238 239 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } 240 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } 241 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } 242 243 bool is_double() const { return strcmp(type, "double") == 0; } 244 double get_double() const { return *((double*) addr); } 245 void set_double(double value) { *((double*) addr) = value; } 246 247 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } 248 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } 249 ccstr get_ccstr() const { return *((ccstr*) addr); } 250 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } 251 252 bool is_unlocker() const; 253 bool is_unlocked() const; 254 bool is_writeable() const; 255 bool is_external() const; 256 257 bool is_unlocker_ext() const; 258 bool is_unlocked_ext() const; 259 bool is_writeable_ext() const; 260 bool is_external_ext() const; 261 262 void get_locked_message(char*, int) const; 263 void get_locked_message_ext(char*, int) const; 264 265 void print_on(outputStream* st, bool withComments = false ); 266 void print_as_flag(outputStream* st); 267}; 268 269// debug flags control various aspects of the VM and are global accessible 270 271// use FlagSetting to temporarily change some debug flag 272// e.g. FlagSetting fs(DebugThisAndThat, true); 273// restored to previous value upon leaving scope 274class FlagSetting { 275 bool val; 276 bool* flag; 277 public: 278 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 279 ~FlagSetting() { *flag = val; } 280}; 281 282 283class CounterSetting { 284 intx* counter; 285 public: 286 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 287 ~CounterSetting() { (*counter)--; } 288}; 289 290 291class UIntFlagSetting { 292 uintx val; 293 uintx* flag; 294 public: 295 UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; } 296 ~UIntFlagSetting() { *flag = val; } 297}; 298 299 300class DoubleFlagSetting { 301 double val; 302 double* flag; 303 public: 304 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 305 ~DoubleFlagSetting() { *flag = val; } 306}; 307 308 309class CommandLineFlags { 310 public: 311 static bool boolAt(char* name, size_t len, bool* value); 312 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } 313 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); 314 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } 315 316 static bool intxAt(char* name, size_t len, intx* value); 317 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } 318 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); 319 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } 320 321 static bool uintxAt(char* name, size_t len, uintx* value); 322 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } 323 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); 324 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } 325 326 static bool uint64_tAt(char* name, size_t len, uint64_t* value); 327 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } 328 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); 329 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 330 331 static bool doubleAt(char* name, size_t len, double* value); 332 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } 333 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); 334 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } 335 336 static bool ccstrAt(char* name, size_t len, ccstr* value); 337 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } 338 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); 339 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } 340 341 // Returns false if name is not a command line flag. 342 static bool wasSetOnCmdline(const char* name, bool* value); 343 static void printSetFlags(outputStream* out); 344 345 static void printFlags(outputStream* out, bool withComments); 346 347 static void verify() PRODUCT_RETURN; 348}; 349 350// use this for flags that are true by default in the debug version but 351// false in the optimized version, and vice versa 352#ifdef ASSERT 353#define trueInDebug true 354#define falseInDebug false 355#else 356#define trueInDebug false 357#define falseInDebug true 358#endif 359 360// use this for flags that are true per default in the product build 361// but false in development builds, and vice versa 362#ifdef PRODUCT 363#define trueInProduct true 364#define falseInProduct false 365#else 366#define trueInProduct false 367#define falseInProduct true 368#endif 369 370#ifdef JAVASE_EMBEDDED 371#define falseInEmbedded false 372#else 373#define falseInEmbedded true 374#endif 375 376// develop flags are settable / visible only during development and are constant in the PRODUCT version 377// product flags are always settable / visible 378// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 379 380// A flag must be declared with one of the following types: 381// bool, intx, uintx, ccstr. 382// The type "ccstr" is an alias for "const char*" and is used 383// only in this file, because the macrology requires single-token type names. 384 385// Note: Diagnostic options not meant for VM tuning or for product modes. 386// They are to be used for VM quality assurance or field diagnosis 387// of VM bugs. They are hidden so that users will not be encouraged to 388// try them as if they were VM ordinary execution options. However, they 389// are available in the product version of the VM. Under instruction 390// from support engineers, VM customers can turn them on to collect 391// diagnostic information about VM problems. To use a VM diagnostic 392// option, you must first specify +UnlockDiagnosticVMOptions. 393// (This master switch also affects the behavior of -Xprintflags.) 394// 395// experimental flags are in support of features that are not 396// part of the officially supported product, but are available 397// for experimenting with. They could, for example, be performance 398// features that may not have undergone full or rigorous QA, but which may 399// help performance in some cases and released for experimentation 400// by the community of users and developers. This flag also allows one to 401// be able to build a fully supported product that nonetheless also 402// ships with some unsupported, lightly tested, experimental features. 403// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 404// UnlockExperimentalVMOptions flag, which allows the control and 405// modification of the experimental flags. 406// 407// Nota bene: neither diagnostic nor experimental options should be used casually, 408// and they are not supported on production loads, except under explicit 409// direction from support engineers. 410// 411// manageable flags are writeable external product flags. 412// They are dynamically writeable through the JDK management interface 413// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 414// These flags are external exported interface (see CCC). The list of 415// manageable flags can be queried programmatically through the management 416// interface. 417// 418// A flag can be made as "manageable" only if 419// - the flag is defined in a CCC as an external exported interface. 420// - the VM implementation supports dynamic setting of the flag. 421// This implies that the VM must *always* query the flag variable 422// and not reuse state related to the flag state at any given time. 423// - you want the flag to be queried programmatically by the customers. 424// 425// product_rw flags are writeable internal product flags. 426// They are like "manageable" flags but for internal/private use. 427// The list of product_rw flags are internal/private flags which 428// may be changed/removed in a future release. It can be set 429// through the management interface to get/set value 430// when the name of flag is supplied. 431// 432// A flag can be made as "product_rw" only if 433// - the VM implementation supports dynamic setting of the flag. 434// This implies that the VM must *always* query the flag variable 435// and not reuse state related to the flag state at any given time. 436// 437// Note that when there is a need to support develop flags to be writeable, 438// it can be done in the same way as product_rw. 439 440#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ 441 \ 442 lp64_product(bool, UseCompressedOops, false, \ 443 "Use 32-bit object references in 64-bit VM " \ 444 "lp64_product means flag is always constant in 32 bit VM") \ 445 \ 446 lp64_product(bool, UseCompressedKlassPointers, false, \ 447 "Use 32-bit klass pointers in 64-bit VM " \ 448 "lp64_product means flag is always constant in 32 bit VM") \ 449 \ 450 notproduct(bool, CheckCompressedOops, true, \ 451 "generate checks in encoding/decoding code in debug VM") \ 452 \ 453 product_pd(uintx, HeapBaseMinAddress, \ 454 "OS specific low limit for heap base address") \ 455 \ 456 diagnostic(bool, PrintCompressedOopsMode, false, \ 457 "Print compressed oops base address and encoding mode") \ 458 \ 459 lp64_product(intx, ObjectAlignmentInBytes, 8, \ 460 "Default object alignment in bytes, 8 is minimum") \ 461 \ 462 product(bool, AssumeMP, false, \ 463 "Instruct the VM to assume multiple processors are available") \ 464 \ 465 /* UseMembar is theoretically a temp flag used for memory barrier \ 466 * removal testing. It was supposed to be removed before FCS but has \ 467 * been re-added (see 6401008) */ \ 468 product_pd(bool, UseMembar, \ 469 "(Unstable) Issues membars on thread state transitions") \ 470 \ 471 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ 472 * that don't support it. This will be replaced by processor detection \ 473 * logic. \ 474 */ \ 475 product(bool, UsePPCLWSYNC, true, \ 476 "Use lwsync instruction if true, else use slower sync") \ 477 \ 478 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ 479 "Whether to clean the chunk pool asynchronously") \ 480 \ 481 /* Temporary: See 6948537 */ \ 482 experimental(bool, UseMemSetInBOT, true, \ 483 "(Unstable) uses memset in BOT updates in GC code") \ 484 \ 485 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 486 "Enable normal processing of flags relating to field diagnostics")\ 487 \ 488 experimental(bool, UnlockExperimentalVMOptions, false, \ 489 "Enable normal processing of flags relating to experimental features")\ 490 \ 491 product(bool, JavaMonitorsInStackTrace, true, \ 492 "Print info. about Java monitor locks when the stacks are dumped")\ 493 \ 494 product_pd(bool, UseLargePages, \ 495 "Use large page memory") \ 496 \ 497 product_pd(bool, UseLargePagesIndividualAllocation, \ 498 "Allocate large pages individually for better affinity") \ 499 \ 500 develop(bool, LargePagesIndividualAllocationInjectError, false, \ 501 "Fail large pages individual allocation") \ 502 \ 503 develop(bool, TracePageSizes, false, \ 504 "Trace page size selection and usage.") \ 505 \ 506 product(bool, UseNUMA, false, \ 507 "Use NUMA if available") \ 508 \ 509 product(bool, UseNUMAInterleaving, false, \ 510 "Interleave memory across NUMA nodes if available") \ 511 \ 512 product(uintx, NUMAInterleaveGranularity, 2*M, \ 513 "Granularity to use for NUMA interleaving on Windows OS") \ 514 \ 515 product(bool, ForceNUMA, false, \ 516 "Force NUMA optimizations on single-node/UMA systems") \ 517 \ 518 product(uintx, NUMAChunkResizeWeight, 20, \ 519 "Percentage (0-100) used to weigh the current sample when " \ 520 "computing exponentially decaying average for " \ 521 "AdaptiveNUMAChunkSizing") \ 522 \ 523 product(uintx, NUMASpaceResizeRate, 1*G, \ 524 "Do not reallocate more that this amount per collection") \ 525 \ 526 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 527 "Enable adaptive chunk sizing for NUMA") \ 528 \ 529 product(bool, NUMAStats, false, \ 530 "Print NUMA stats in detailed heap information") \ 531 \ 532 product(uintx, NUMAPageScanRate, 256, \ 533 "Maximum number of pages to include in the page scan procedure") \ 534 \ 535 product_pd(bool, NeedsDeoptSuspend, \ 536 "True for register window machines (sparc/ia64)") \ 537 \ 538 product(intx, UseSSE, 99, \ 539 "Highest supported SSE instructions set on x86/x64") \ 540 \ 541 product(bool, UseAES, false, \ 542 "Control whether AES instructions can be used on x86/x64") \ 543 \ 544 product(uintx, LargePageSizeInBytes, 0, \ 545 "Large page size (0 to let VM choose the page size") \ 546 \ 547 product(uintx, LargePageHeapSizeThreshold, 128*M, \ 548 "Use large pages if max heap is at least this big") \ 549 \ 550 product(bool, ForceTimeHighResolution, false, \ 551 "Using high time resolution(For Win32 only)") \ 552 \ 553 develop(bool, TraceItables, false, \ 554 "Trace initialization and use of itables") \ 555 \ 556 develop(bool, TracePcPatching, false, \ 557 "Trace usage of frame::patch_pc") \ 558 \ 559 develop(bool, TraceJumps, false, \ 560 "Trace assembly jumps in thread ring buffer") \ 561 \ 562 develop(bool, TraceRelocator, false, \ 563 "Trace the bytecode relocator") \ 564 \ 565 develop(bool, TraceLongCompiles, false, \ 566 "Print out every time compilation is longer than " \ 567 "a given threashold") \ 568 \ 569 develop(bool, SafepointALot, false, \ 570 "Generates a lot of safepoints. Works with " \ 571 "GuaranteedSafepointInterval") \ 572 \ 573 product_pd(bool, BackgroundCompilation, \ 574 "A thread requesting compilation is not blocked during " \ 575 "compilation") \ 576 \ 577 product(bool, PrintVMQWaitTime, false, \ 578 "Prints out the waiting time in VM operation queue") \ 579 \ 580 develop(bool, NoYieldsInMicrolock, false, \ 581 "Disable yields in microlock") \ 582 \ 583 develop(bool, TraceOopMapGeneration, false, \ 584 "Shows oopmap generation") \ 585 \ 586 product(bool, MethodFlushing, true, \ 587 "Reclamation of zombie and not-entrant methods") \ 588 \ 589 develop(bool, VerifyStack, false, \ 590 "Verify stack of each thread when it is entering a runtime call") \ 591 \ 592 diagnostic(bool, ForceUnreachable, false, \ 593 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ 594 \ 595 notproduct(bool, StressDerivedPointers, false, \ 596 "Force scavenge when a derived pointers is detected on stack " \ 597 "after rtm call") \ 598 \ 599 develop(bool, TraceDerivedPointers, false, \ 600 "Trace traversal of derived pointers on stack") \ 601 \ 602 notproduct(bool, TraceCodeBlobStacks, false, \ 603 "Trace stack-walk of codeblobs") \ 604 \ 605 product(bool, PrintJNIResolving, false, \ 606 "Used to implement -v:jni") \ 607 \ 608 notproduct(bool, PrintRewrites, false, \ 609 "Print methods that are being rewritten") \ 610 \ 611 product(bool, UseInlineCaches, true, \ 612 "Use Inline Caches for virtual calls ") \ 613 \ 614 develop(bool, InlineArrayCopy, true, \ 615 "inline arraycopy native that is known to be part of " \ 616 "base library DLL") \ 617 \ 618 develop(bool, InlineObjectHash, true, \ 619 "inline Object::hashCode() native that is known to be part " \ 620 "of base library DLL") \ 621 \ 622 develop(bool, InlineNatives, true, \ 623 "inline natives that are known to be part of base library DLL") \ 624 \ 625 develop(bool, InlineMathNatives, true, \ 626 "inline SinD, CosD, etc.") \ 627 \ 628 develop(bool, InlineClassNatives, true, \ 629 "inline Class.isInstance, etc") \ 630 \ 631 develop(bool, InlineThreadNatives, true, \ 632 "inline Thread.currentThread, etc") \ 633 \ 634 develop(bool, InlineUnsafeOps, true, \ 635 "inline memory ops (native methods) from sun.misc.Unsafe") \ 636 \ 637 product(bool, CriticalJNINatives, true, \ 638 "check for critical JNI entry points") \ 639 \ 640 notproduct(bool, StressCriticalJNINatives, false, \ 641 "Exercise register saving code in critical natives") \ 642 \ 643 product(bool, UseSSE42Intrinsics, false, \ 644 "SSE4.2 versions of intrinsics") \ 645 \ 646 product(bool, UseAESIntrinsics, false, \ 647 "use intrinsics for AES versions of crypto") \ 648 \ 649 product(bool, UseCRC32Intrinsics, false, \ 650 "use intrinsics for java.util.zip.CRC32") \ 651 \ 652 develop(bool, TraceCallFixup, false, \ 653 "traces all call fixups") \ 654 \ 655 develop(bool, DeoptimizeALot, false, \ 656 "deoptimize at every exit from the runtime system") \ 657 \ 658 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 659 "a comma separated list of bcis to deoptimize at") \ 660 \ 661 product(bool, DeoptimizeRandom, false, \ 662 "deoptimize random frames on random exit from the runtime system")\ 663 \ 664 notproduct(bool, ZombieALot, false, \ 665 "creates zombies (non-entrant) at exit from the runt. system") \ 666 \ 667 product(bool, UnlinkSymbolsALot, false, \ 668 "unlink unreferenced symbols from the symbol table at safepoints")\ 669 \ 670 notproduct(bool, WalkStackALot, false, \ 671 "trace stack (no print) at every exit from the runtime system") \ 672 \ 673 product(bool, Debugging, false, \ 674 "set when executing debug methods in debug.ccp " \ 675 "(to prevent triggering assertions)") \ 676 \ 677 notproduct(bool, StrictSafepointChecks, trueInDebug, \ 678 "Enable strict checks that safepoints cannot happen for threads " \ 679 "that used No_Safepoint_Verifier") \ 680 \ 681 notproduct(bool, VerifyLastFrame, false, \ 682 "Verify oops on last frame on entry to VM") \ 683 \ 684 develop(bool, TraceHandleAllocation, false, \ 685 "Prints out warnings when suspicious many handles are allocated") \ 686 \ 687 product(bool, UseCompilerSafepoints, true, \ 688 "Stop at safepoints in compiled code") \ 689 \ 690 product(bool, FailOverToOldVerifier, true, \ 691 "fail over to old verifier when split verifier fails") \ 692 \ 693 develop(bool, ShowSafepointMsgs, false, \ 694 "Show msg. about safepoint synch.") \ 695 \ 696 product(bool, SafepointTimeout, false, \ 697 "Time out and warn or fail after SafepointTimeoutDelay " \ 698 "milliseconds if failed to reach safepoint") \ 699 \ 700 develop(bool, DieOnSafepointTimeout, false, \ 701 "Die upon failure to reach safepoint (see SafepointTimeout)") \ 702 \ 703 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 704 /* typically, at most a few retries are needed */ \ 705 product(intx, SuspendRetryCount, 50, \ 706 "Maximum retry count for an external suspend request") \ 707 \ 708 product(intx, SuspendRetryDelay, 5, \ 709 "Milliseconds to delay per retry (* current_retry_count)") \ 710 \ 711 product(bool, AssertOnSuspendWaitFailure, false, \ 712 "Assert/Guarantee on external suspend wait failure") \ 713 \ 714 product(bool, TraceSuspendWaitFailures, false, \ 715 "Trace external suspend wait failures") \ 716 \ 717 product(bool, MaxFDLimit, true, \ 718 "Bump the number of file descriptors to max in solaris.") \ 719 \ 720 diagnostic(bool, LogEvents, true, \ 721 "Enable the various ring buffer event logs") \ 722 \ 723 diagnostic(uintx, LogEventsBufferEntries, 10, \ 724 "Enable the various ring buffer event logs") \ 725 \ 726 product(bool, BytecodeVerificationRemote, true, \ 727 "Enables the Java bytecode verifier for remote classes") \ 728 \ 729 product(bool, BytecodeVerificationLocal, false, \ 730 "Enables the Java bytecode verifier for local classes") \ 731 \ 732 develop(bool, ForceFloatExceptions, trueInDebug, \ 733 "Force exceptions on FP stack under/overflow") \ 734 \ 735 develop(bool, VerifyStackAtCalls, false, \ 736 "Verify that the stack pointer is unchanged after calls") \ 737 \ 738 develop(bool, TraceJavaAssertions, false, \ 739 "Trace java language assertions") \ 740 \ 741 notproduct(bool, CheckAssertionStatusDirectives, false, \ 742 "temporary - see javaClasses.cpp") \ 743 \ 744 notproduct(bool, PrintMallocFree, false, \ 745 "Trace calls to C heap malloc/free allocation") \ 746 \ 747 product(bool, PrintOopAddress, false, \ 748 "Always print the location of the oop") \ 749 \ 750 notproduct(bool, VerifyCodeCacheOften, false, \ 751 "Verify compiled-code cache often") \ 752 \ 753 develop(bool, ZapDeadCompiledLocals, false, \ 754 "Zap dead locals in compiler frames") \ 755 \ 756 notproduct(bool, ZapDeadLocalsOld, false, \ 757 "Zap dead locals (old version, zaps all frames when " \ 758 "entering the VM") \ 759 \ 760 notproduct(bool, CheckOopishValues, false, \ 761 "Warn if value contains oop ( requires ZapDeadLocals)") \ 762 \ 763 develop(bool, UseMallocOnly, false, \ 764 "use only malloc/free for allocation (no resource area/arena)") \ 765 \ 766 develop(bool, PrintMalloc, false, \ 767 "print all malloc/free calls") \ 768 \ 769 develop(bool, PrintMallocStatistics, false, \ 770 "print malloc/free statistics") \ 771 \ 772 develop(bool, ZapResourceArea, trueInDebug, \ 773 "Zap freed resource/arena space with 0xABABABAB") \ 774 \ 775 notproduct(bool, ZapVMHandleArea, trueInDebug, \ 776 "Zap freed VM handle space with 0xBCBCBCBC") \ 777 \ 778 develop(bool, ZapJNIHandleArea, trueInDebug, \ 779 "Zap freed JNI handle space with 0xFEFEFEFE") \ 780 \ 781 notproduct(bool, ZapStackSegments, trueInDebug, \ 782 "Zap allocated/freed Stack segments with 0xFADFADED") \ 783 \ 784 develop(bool, ZapUnusedHeapArea, trueInDebug, \ 785 "Zap unused heap space with 0xBAADBABE") \ 786 \ 787 develop(bool, TraceZapUnusedHeapArea, false, \ 788 "Trace zapping of unused heap space") \ 789 \ 790 develop(bool, CheckZapUnusedHeapArea, false, \ 791 "Check zapping of unused heap space") \ 792 \ 793 develop(bool, ZapFillerObjects, trueInDebug, \ 794 "Zap filler objects with 0xDEAFBABE") \ 795 \ 796 develop(bool, PrintVMMessages, true, \ 797 "Print vm messages on console") \ 798 \ 799 product(bool, PrintGCApplicationConcurrentTime, false, \ 800 "Print the time the application has been running") \ 801 \ 802 product(bool, PrintGCApplicationStoppedTime, false, \ 803 "Print the time the application has been stopped") \ 804 \ 805 diagnostic(bool, VerboseVerification, false, \ 806 "Display detailed verification details") \ 807 \ 808 notproduct(uintx, ErrorHandlerTest, 0, \ 809 "If > 0, provokes an error after VM initialization; the value" \ 810 "determines which error to provoke. See test_error_handler()" \ 811 "in debug.cpp.") \ 812 \ 813 develop(bool, Verbose, false, \ 814 "Prints additional debugging information from other modes") \ 815 \ 816 develop(bool, PrintMiscellaneous, false, \ 817 "Prints uncategorized debugging information (requires +Verbose)") \ 818 \ 819 develop(bool, WizardMode, false, \ 820 "Prints much more debugging information") \ 821 \ 822 product(bool, ShowMessageBoxOnError, false, \ 823 "Keep process alive on VM fatal error") \ 824 \ 825 product(bool, CreateMinidumpOnCrash, false, \ 826 "Create minidump on VM fatal error") \ 827 \ 828 product_pd(bool, UseOSErrorReporting, \ 829 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 830 \ 831 product(bool, SuppressFatalErrorMessage, false, \ 832 "Do NO Fatal Error report [Avoid deadlock]") \ 833 \ 834 product(ccstrlist, OnError, "", \ 835 "Run user-defined commands on fatal error; see VMError.cpp " \ 836 "for examples") \ 837 \ 838 product(ccstrlist, OnOutOfMemoryError, "", \ 839 "Run user-defined commands on first java.lang.OutOfMemoryError") \ 840 \ 841 manageable(bool, HeapDumpBeforeFullGC, false, \ 842 "Dump heap to file before any major stop-world GC") \ 843 \ 844 manageable(bool, HeapDumpAfterFullGC, false, \ 845 "Dump heap to file after any major stop-world GC") \ 846 \ 847 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 848 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 849 \ 850 manageable(ccstr, HeapDumpPath, NULL, \ 851 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ 852 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ 853 "in the working directory)") \ 854 \ 855 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ 856 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 857 "when the heap usage is larger than this") \ 858 \ 859 develop(uintx, HeapDumpSegmentSize, 1*G, \ 860 "Approximate segment size when generating a segmented heap dump") \ 861 \ 862 develop(bool, BreakAtWarning, false, \ 863 "Execute breakpoint upon encountering VM warning") \ 864 \ 865 develop(bool, TraceVMOperation, false, \ 866 "Trace vm operations") \ 867 \ 868 develop(bool, UseFakeTimers, false, \ 869 "Tells whether the VM should use system time or a fake timer") \ 870 \ 871 product(ccstr, NativeMemoryTracking, "off", \ 872 "Native memory tracking options") \ 873 \ 874 diagnostic(bool, PrintNMTStatistics, false, \ 875 "Print native memory tracking summary data if it is on") \ 876 \ 877 diagnostic(bool, AutoShutdownNMT, true, \ 878 "Automatically shutdown native memory tracking under stress " \ 879 "situation. When set to false, native memory tracking tries to " \ 880 "stay alive at the expense of JVM performance") \ 881 \ 882 diagnostic(bool, LogCompilation, false, \ 883 "Log compilation activity in detail to hotspot.log or LogFile") \ 884 \ 885 product(bool, PrintCompilation, false, \ 886 "Print compilations") \ 887 \ 888 diagnostic(bool, TraceNMethodInstalls, false, \ 889 "Trace nmethod intallation") \ 890 \ 891 diagnostic(intx, ScavengeRootsInCode, 2, \ 892 "0: do not allow scavengable oops in the code cache; " \ 893 "1: allow scavenging from the code cache; " \ 894 "2: emit as many constants as the compiler can see") \ 895 \ 896 product(bool, AlwaysRestoreFPU, false, \ 897 "Restore the FPU control word after every JNI call (expensive)") \ 898 \ 899 diagnostic(bool, PrintCompilation2, false, \ 900 "Print additional statistics per compilation") \ 901 \ 902 diagnostic(bool, PrintAdapterHandlers, false, \ 903 "Print code generated for i2c/c2i adapters") \ 904 \ 905 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 906 "Verify that i2c/c2i adapters are called properly") \ 907 \ 908 develop(bool, VerifyAdapterSharing, false, \ 909 "Verify that the code for shared adapters is the equivalent") \ 910 \ 911 diagnostic(bool, PrintAssembly, false, \ 912 "Print assembly code (using external disassembler.so)") \ 913 \ 914 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 915 "Options string passed to disassembler.so") \ 916 \ 917 diagnostic(bool, PrintNMethods, false, \ 918 "Print assembly code for nmethods when generated") \ 919 \ 920 diagnostic(bool, PrintNativeNMethods, false, \ 921 "Print assembly code for native nmethods when generated") \ 922 \ 923 develop(bool, PrintDebugInfo, false, \ 924 "Print debug information for all nmethods when generated") \ 925 \ 926 develop(bool, PrintRelocations, false, \ 927 "Print relocation information for all nmethods when generated") \ 928 \ 929 develop(bool, PrintDependencies, false, \ 930 "Print dependency information for all nmethods when generated") \ 931 \ 932 develop(bool, PrintExceptionHandlers, false, \ 933 "Print exception handler tables for all nmethods when generated") \ 934 \ 935 develop(bool, StressCompiledExceptionHandlers, false, \ 936 "Exercise compiled exception handlers") \ 937 \ 938 develop(bool, InterceptOSException, false, \ 939 "Starts debugger when an implicit OS (e.g., NULL) " \ 940 "exception happens") \ 941 \ 942 product(bool, PrintCodeCache, false, \ 943 "Print the code cache memory usage when exiting") \ 944 \ 945 develop(bool, PrintCodeCache2, false, \ 946 "Print detailed usage info on the code cache when exiting") \ 947 \ 948 product(bool, PrintCodeCacheOnCompilation, false, \ 949 "Print the code cache memory usage each time a method is compiled") \ 950 \ 951 diagnostic(bool, PrintStubCode, false, \ 952 "Print generated stub code") \ 953 \ 954 product(bool, StackTraceInThrowable, true, \ 955 "Collect backtrace in throwable when exception happens") \ 956 \ 957 product(bool, OmitStackTraceInFastThrow, true, \ 958 "Omit backtraces for some 'hot' exceptions in optimized code") \ 959 \ 960 product(bool, ProfilerPrintByteCodeStatistics, false, \ 961 "Prints byte code statictics when dumping profiler output") \ 962 \ 963 product(bool, ProfilerRecordPC, false, \ 964 "Collects tick for each 16 byte interval of compiled code") \ 965 \ 966 product(bool, ProfileVM, false, \ 967 "Profiles ticks that fall within VM (either in the VM Thread " \ 968 "or VM code called through stubs)") \ 969 \ 970 product(bool, ProfileIntervals, false, \ 971 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ 972 \ 973 notproduct(bool, ProfilerCheckIntervals, false, \ 974 "Collect and print info on spacing of profiler ticks") \ 975 \ 976 develop(bool, PrintJVMWarnings, false, \ 977 "Prints warnings for unimplemented JVM functions") \ 978 \ 979 product(bool, PrintWarnings, true, \ 980 "Prints JVM warnings to output stream") \ 981 \ 982 notproduct(uintx, WarnOnStalledSpinLock, 0, \ 983 "Prints warnings for stalled SpinLocks") \ 984 \ 985 product(bool, RegisterFinalizersAtInit, true, \ 986 "Register finalizable objects at end of Object.<init> or " \ 987 "after allocation") \ 988 \ 989 develop(bool, RegisterReferences, true, \ 990 "Tells whether the VM should register soft/weak/final/phantom " \ 991 "references") \ 992 \ 993 develop(bool, IgnoreRewrites, false, \ 994 "Supress rewrites of bytecodes in the oopmap generator. " \ 995 "This is unsafe!") \ 996 \ 997 develop(bool, PrintCodeCacheExtension, false, \ 998 "Print extension of code cache") \ 999 \ 1000 develop(bool, UsePrivilegedStack, true, \ 1001 "Enable the security JVM functions") \ 1002 \ 1003 develop(bool, ProtectionDomainVerification, true, \ 1004 "Verifies protection domain before resolution in system " \ 1005 "dictionary") \ 1006 \ 1007 product(bool, ClassUnloading, true, \ 1008 "Do unloading of classes") \ 1009 \ 1010 develop(bool, DisableStartThread, false, \ 1011 "Disable starting of additional Java threads " \ 1012 "(for debugging only)") \ 1013 \ 1014 develop(bool, MemProfiling, false, \ 1015 "Write memory usage profiling to log file") \ 1016 \ 1017 notproduct(bool, PrintSystemDictionaryAtExit, false, \ 1018 "Prints the system dictionary at exit") \ 1019 \ 1020 experimental(intx, PredictedLoadedClassCount, 0, \ 1021 "Experimental: Tune loaded class cache starting size.") \ 1022 \ 1023 diagnostic(bool, UnsyncloadClass, false, \ 1024 "Unstable: VM calls loadClass unsynchronized. Custom " \ 1025 "class loader must call VM synchronized for findClass " \ 1026 "and defineClass.") \ 1027 \ 1028 product(bool, AlwaysLockClassLoader, false, \ 1029 "Require the VM to acquire the class loader lock before calling " \ 1030 "loadClass() even for class loaders registering " \ 1031 "as parallel capable") \ 1032 \ 1033 product(bool, AllowParallelDefineClass, false, \ 1034 "Allow parallel defineClass requests for class loaders " \ 1035 "registering as parallel capable") \ 1036 \ 1037 product(bool, MustCallLoadClassInternal, false, \ 1038 "Call loadClassInternal() rather than loadClass()") \ 1039 \ 1040 product_pd(bool, DontYieldALot, \ 1041 "Throw away obvious excess yield calls (for SOLARIS only)") \ 1042 \ 1043 product_pd(bool, ConvertSleepToYield, \ 1044 "Converts sleep(0) to thread yield " \ 1045 "(may be off for SOLARIS to improve GUI)") \ 1046 \ 1047 product(bool, ConvertYieldToSleep, false, \ 1048 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ 1049 "behavior (SOLARIS only)") \ 1050 \ 1051 product(bool, UseBoundThreads, true, \ 1052 "Bind user level threads to kernel threads (for SOLARIS only)") \ 1053 \ 1054 develop(bool, UseDetachedThreads, true, \ 1055 "Use detached threads that are recycled upon termination " \ 1056 "(for SOLARIS only)") \ 1057 \ 1058 product(bool, UseLWPSynchronization, true, \ 1059 "Use LWP-based instead of libthread-based synchronization " \ 1060 "(SPARC only)") \ 1061 \ 1062 product(ccstr, SyncKnobs, NULL, \ 1063 "(Unstable) Various monitor synchronization tunables") \ 1064 \ 1065 product(intx, EmitSync, 0, \ 1066 "(Unsafe,Unstable) " \ 1067 " Controls emission of inline sync fast-path code") \ 1068 \ 1069 product(intx, MonitorBound, 0, "Bound Monitor population") \ 1070 \ 1071 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ 1072 \ 1073 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ 1074 \ 1075 product(intx, SyncVerbose, 0, "(Unstable)" ) \ 1076 \ 1077 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ 1078 \ 1079 product(intx, hashCode, 5, \ 1080 "(Unstable) select hashCode generation algorithm" ) \ 1081 \ 1082 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ 1083 "(Unstable, Linux-specific)" \ 1084 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ 1085 \ 1086 product(bool, FilterSpuriousWakeups, true, \ 1087 "Prevent spurious or premature wakeups from object.wait " \ 1088 "(Solaris only)") \ 1089 \ 1090 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ 1091 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ 1092 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ 1093 \ 1094 develop(bool, UsePthreads, false, \ 1095 "Use pthread-based instead of libthread-based synchronization " \ 1096 "(SPARC only)") \ 1097 \ 1098 product(bool, AdjustConcurrency, false, \ 1099 "call thr_setconcurrency at thread create time to avoid " \ 1100 "LWP starvation on MP systems (For Solaris Only)") \ 1101 \ 1102 product(bool, ReduceSignalUsage, false, \ 1103 "Reduce the use of OS signals in Java and/or the VM") \ 1104 \ 1105 develop_pd(bool, ShareVtableStubs, \ 1106 "Share vtable stubs (smaller code but worse branch prediction") \ 1107 \ 1108 develop(bool, LoadLineNumberTables, true, \ 1109 "Tells whether the class file parser loads line number tables") \ 1110 \ 1111 develop(bool, LoadLocalVariableTables, true, \ 1112 "Tells whether the class file parser loads local variable tables")\ 1113 \ 1114 develop(bool, LoadLocalVariableTypeTables, true, \ 1115 "Tells whether the class file parser loads local variable type tables")\ 1116 \ 1117 product(bool, AllowUserSignalHandlers, false, \ 1118 "Do not complain if the application installs signal handlers " \ 1119 "(Solaris & Linux only)") \ 1120 \ 1121 product(bool, UseSignalChaining, true, \ 1122 "Use signal-chaining to invoke signal handlers installed " \ 1123 "by the application (Solaris & Linux only)") \ 1124 \ 1125 product(bool, UseAltSigs, false, \ 1126 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 1127 "internal signals (Solaris only)") \ 1128 \ 1129 product(bool, AllowJNIEnvProxy, false, \ 1130 "Allow JNIEnv proxies for jdbx") \ 1131 \ 1132 product(bool, JNIDetachReleasesMonitors, true, \ 1133 "JNI DetachCurrentThread releases monitors owned by thread") \ 1134 \ 1135 product(bool, RestoreMXCSROnJNICalls, false, \ 1136 "Restore MXCSR when returning from JNI calls") \ 1137 \ 1138 product(bool, CheckJNICalls, false, \ 1139 "Verify all arguments to JNI calls") \ 1140 \ 1141 product(bool, UseFastJNIAccessors, true, \ 1142 "Use optimized versions of Get<Primitive>Field") \ 1143 \ 1144 product(bool, EagerXrunInit, false, \ 1145 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 1146 " but not all -Xrun libraries may support the state of the VM at this time") \ 1147 \ 1148 product(bool, PreserveAllAnnotations, false, \ 1149 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ 1150 \ 1151 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 1152 "Number of OutOfMemoryErrors preallocated with backtrace") \ 1153 \ 1154 product(bool, LazyBootClassLoader, true, \ 1155 "Enable/disable lazy opening of boot class path entries") \ 1156 \ 1157 product(bool, UseXMMForArrayCopy, false, \ 1158 "Use SSE2 MOVQ instruction for Arraycopy") \ 1159 \ 1160 product(intx, FieldsAllocationStyle, 1, \ 1161 "0 - type based with oops first, 1 - with oops last, " \ 1162 "2 - oops in super and sub classes are together") \ 1163 \ 1164 product(bool, CompactFields, true, \ 1165 "Allocate nonstatic fields in gaps between previous fields") \ 1166 \ 1167 notproduct(bool, PrintFieldLayout, false, \ 1168 "Print field layout for each class") \ 1169 \ 1170 product(intx, ContendedPaddingWidth, 128, \ 1171 "How many bytes to pad the fields/classes marked @Contended with")\ 1172 \ 1173 product(bool, EnableContended, true, \ 1174 "Enable @Contended annotation support") \ 1175 \ 1176 product(bool, RestrictContended, true, \ 1177 "Restrict @Contended to trusted classes") \ 1178 \ 1179 product(bool, UseBiasedLocking, true, \ 1180 "Enable biased locking in JVM") \ 1181 \ 1182 product(intx, BiasedLockingStartupDelay, 4000, \ 1183 "Number of milliseconds to wait before enabling biased locking") \ 1184 \ 1185 diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1186 "Print statistics of biased locking in JVM") \ 1187 \ 1188 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1189 "Threshold of number of revocations per type to try to " \ 1190 "rebias all objects in the heap of that type") \ 1191 \ 1192 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1193 "Threshold of number of revocations per type to permanently " \ 1194 "revoke biases of all objects in the heap of that type") \ 1195 \ 1196 product(intx, BiasedLockingDecayTime, 25000, \ 1197 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1198 "type after previous bulk rebias") \ 1199 \ 1200 /* tracing */ \ 1201 \ 1202 notproduct(bool, TraceRuntimeCalls, false, \ 1203 "Trace run-time calls") \ 1204 \ 1205 develop(bool, TraceJNICalls, false, \ 1206 "Trace JNI calls") \ 1207 \ 1208 notproduct(bool, TraceJVMCalls, false, \ 1209 "Trace JVM calls") \ 1210 \ 1211 product(ccstr, TraceJVMTI, NULL, \ 1212 "Trace flags for JVMTI functions and events") \ 1213 \ 1214 /* This option can change an EMCP method into an obsolete method. */ \ 1215 /* This can affect tests that except specific methods to be EMCP. */ \ 1216 /* This option should be used with caution. */ \ 1217 product(bool, StressLdcRewrite, false, \ 1218 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1219 \ 1220 product(intx, TraceRedefineClasses, 0, \ 1221 "Trace level for JVMTI RedefineClasses") \ 1222 \ 1223 develop(bool, StressMethodComparator, false, \ 1224 "run the MethodComparator on all loaded methods") \ 1225 \ 1226 /* change to false by default sometime after Mustang */ \ 1227 product(bool, VerifyMergedCPBytecodes, true, \ 1228 "Verify bytecodes after RedefineClasses constant pool merging") \ 1229 \ 1230 develop(bool, TraceJNIHandleAllocation, false, \ 1231 "Trace allocation/deallocation of JNI handle blocks") \ 1232 \ 1233 develop(bool, TraceThreadEvents, false, \ 1234 "Trace all thread events") \ 1235 \ 1236 develop(bool, TraceBytecodes, false, \ 1237 "Trace bytecode execution") \ 1238 \ 1239 develop(bool, TraceClassInitialization, false, \ 1240 "Trace class initialization") \ 1241 \ 1242 develop(bool, TraceExceptions, false, \ 1243 "Trace exceptions") \ 1244 \ 1245 develop(bool, TraceICs, false, \ 1246 "Trace inline cache changes") \ 1247 \ 1248 notproduct(bool, TraceInvocationCounterOverflow, false, \ 1249 "Trace method invocation counter overflow") \ 1250 \ 1251 develop(bool, TraceInlineCacheClearing, false, \ 1252 "Trace clearing of inline caches in nmethods") \ 1253 \ 1254 develop(bool, TraceDependencies, false, \ 1255 "Trace dependencies") \ 1256 \ 1257 develop(bool, VerifyDependencies, trueInDebug, \ 1258 "Exercise and verify the compilation dependency mechanism") \ 1259 \ 1260 develop(bool, TraceNewOopMapGeneration, false, \ 1261 "Trace OopMapGeneration") \ 1262 \ 1263 develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1264 "Trace OopMapGeneration: print detailed cell states") \ 1265 \ 1266 develop(bool, TimeOopMap, false, \ 1267 "Time calls to GenerateOopMap::compute_map() in sum") \ 1268 \ 1269 develop(bool, TimeOopMap2, false, \ 1270 "Time calls to GenerateOopMap::compute_map() individually") \ 1271 \ 1272 develop(bool, TraceMonitorMismatch, false, \ 1273 "Trace monitor matching failures during OopMapGeneration") \ 1274 \ 1275 develop(bool, TraceOopMapRewrites, false, \ 1276 "Trace rewritting of method oops during oop map generation") \ 1277 \ 1278 develop(bool, TraceSafepoint, false, \ 1279 "Trace safepoint operations") \ 1280 \ 1281 develop(bool, TraceICBuffer, false, \ 1282 "Trace usage of IC buffer") \ 1283 \ 1284 develop(bool, TraceCompiledIC, false, \ 1285 "Trace changes of compiled IC") \ 1286 \ 1287 notproduct(bool, TraceZapDeadLocals, false, \ 1288 "Trace zapping dead locals") \ 1289 \ 1290 develop(bool, TraceStartupTime, false, \ 1291 "Trace setup time") \ 1292 \ 1293 develop(bool, TraceProtectionDomainVerification, false, \ 1294 "Trace protection domain verifcation") \ 1295 \ 1296 develop(bool, TraceClearedExceptions, false, \ 1297 "Prints when an exception is forcibly cleared") \ 1298 \ 1299 product(bool, TraceClassResolution, false, \ 1300 "Trace all constant pool resolutions (for debugging)") \ 1301 \ 1302 product(bool, TraceBiasedLocking, false, \ 1303 "Trace biased locking in JVM") \ 1304 \ 1305 product(bool, TraceMonitorInflation, false, \ 1306 "Trace monitor inflation in JVM") \ 1307 \ 1308 /* gc */ \ 1309 \ 1310 product(bool, UseSerialGC, false, \ 1311 "Use the serial garbage collector") \ 1312 \ 1313 product(bool, UseG1GC, false, \ 1314 "Use the Garbage-First garbage collector") \ 1315 \ 1316 product(bool, UseParallelGC, false, \ 1317 "Use the Parallel Scavenge garbage collector") \ 1318 \ 1319 product(bool, UseParallelOldGC, false, \ 1320 "Use the Parallel Old garbage collector") \ 1321 \ 1322 product(uintx, HeapMaximumCompactionInterval, 20, \ 1323 "How often should we maximally compact the heap (not allowing " \ 1324 "any dead space)") \ 1325 \ 1326 product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1327 "The collection count for the first maximum compaction") \ 1328 \ 1329 product(bool, UseMaximumCompactionOnSystemGC, true, \ 1330 "In the Parallel Old garbage collector maximum compaction for " \ 1331 "a system GC") \ 1332 \ 1333 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1334 "The mean used by the par compact dead wood" \ 1335 "limiter (a number between 0-100).") \ 1336 \ 1337 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1338 "The standard deviation used by the par compact dead wood" \ 1339 "limiter (a number between 0-100).") \ 1340 \ 1341 product(uintx, ParallelGCThreads, 0, \ 1342 "Number of parallel threads parallel gc will use") \ 1343 \ 1344 product(bool, UseDynamicNumberOfGCThreads, false, \ 1345 "Dynamically choose the number of parallel threads " \ 1346 "parallel gc will use") \ 1347 \ 1348 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 1349 "Force dynamic selection of the number of" \ 1350 "parallel threads parallel gc will use to aid debugging") \ 1351 \ 1352 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 1353 "Size of heap (bytes) per GC thread used in calculating the " \ 1354 "number of GC threads") \ 1355 \ 1356 product(bool, TraceDynamicGCThreads, false, \ 1357 "Trace the dynamic GC thread usage") \ 1358 \ 1359 develop(bool, ParallelOldGCSplitALot, false, \ 1360 "Provoke splitting (copying data from a young gen space to" \ 1361 "multiple destination spaces)") \ 1362 \ 1363 develop(uintx, ParallelOldGCSplitInterval, 3, \ 1364 "How often to provoke splitting a young gen space") \ 1365 \ 1366 product(uintx, ConcGCThreads, 0, \ 1367 "Number of threads concurrent gc will use") \ 1368 \ 1369 product(uintx, YoungPLABSize, 4096, \ 1370 "Size of young gen promotion labs (in HeapWords)") \ 1371 \ 1372 product(uintx, OldPLABSize, 1024, \ 1373 "Size of old gen promotion labs (in HeapWords)") \ 1374 \ 1375 product(uintx, GCTaskTimeStampEntries, 200, \ 1376 "Number of time stamp entries per gc worker thread") \ 1377 \ 1378 product(bool, AlwaysTenure, false, \ 1379 "Always tenure objects in eden. (ParallelGC only)") \ 1380 \ 1381 product(bool, NeverTenure, false, \ 1382 "Never tenure objects in eden, May tenure on overflow " \ 1383 "(ParallelGC only)") \ 1384 \ 1385 product(bool, ScavengeBeforeFullGC, true, \ 1386 "Scavenge youngest generation before each full GC, " \ 1387 "used with UseParallelGC") \ 1388 \ 1389 develop(bool, ScavengeWithObjectsInToSpace, false, \ 1390 "Allow scavenges to occur when to_space contains objects.") \ 1391 \ 1392 product(bool, UseConcMarkSweepGC, false, \ 1393 "Use Concurrent Mark-Sweep GC in the old generation") \ 1394 \ 1395 product(bool, ExplicitGCInvokesConcurrent, false, \ 1396 "A System.gc() request invokes a concurrent collection;" \ 1397 " (effective only when UseConcMarkSweepGC)") \ 1398 \ 1399 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1400 "A System.gc() request invokes a concurrent collection and " \ 1401 "also unloads classes during such a concurrent gc cycle " \ 1402 "(effective only when UseConcMarkSweepGC)") \ 1403 \ 1404 product(bool, GCLockerInvokesConcurrent, false, \ 1405 "The exit of a JNI CS necessitating a scavenge also" \ 1406 " kicks off a bkgrd concurrent collection") \ 1407 \ 1408 product(uintx, GCLockerEdenExpansionPercent, 5, \ 1409 "How much the GC can expand the eden by while the GC locker " \ 1410 "is active (as a percentage)") \ 1411 \ 1412 diagnostic(intx, GCLockerRetryAllocationCount, 2, \ 1413 "Number of times to retry allocations when" \ 1414 " blocked by the GC locker") \ 1415 \ 1416 develop(bool, UseCMSAdaptiveFreeLists, true, \ 1417 "Use Adaptive Free Lists in the CMS generation") \ 1418 \ 1419 develop(bool, UseAsyncConcMarkSweepGC, true, \ 1420 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1421 \ 1422 develop(bool, RotateCMSCollectionTypes, false, \ 1423 "Rotate the CMS collections among concurrent and STW") \ 1424 \ 1425 product(bool, UseCMSBestFit, true, \ 1426 "Use CMS best fit allocation strategy") \ 1427 \ 1428 product(bool, UseCMSCollectionPassing, true, \ 1429 "Use passing of collection from background to foreground") \ 1430 \ 1431 product(bool, UseParNewGC, false, \ 1432 "Use parallel threads in the new generation.") \ 1433 \ 1434 product(bool, ParallelGCVerbose, false, \ 1435 "Verbose output for parallel GC.") \ 1436 \ 1437 product(uintx, ParallelGCBufferWastePct, 10, \ 1438 "Wasted fraction of parallel allocation buffer.") \ 1439 \ 1440 diagnostic(bool, ParallelGCRetainPLAB, false, \ 1441 "Retain parallel allocation buffers across scavenges; " \ 1442 " -- disabled because this currently conflicts with " \ 1443 " parallel card scanning under certain conditions ") \ 1444 \ 1445 product(uintx, TargetPLABWastePct, 10, \ 1446 "Target wasted space in last buffer as percent of overall " \ 1447 "allocation") \ 1448 \ 1449 product(uintx, PLABWeight, 75, \ 1450 "Percentage (0-100) used to weight the current sample when" \ 1451 "computing exponentially decaying average for ResizePLAB.") \ 1452 \ 1453 product(bool, ResizePLAB, true, \ 1454 "Dynamically resize (survivor space) promotion labs") \ 1455 \ 1456 product(bool, PrintPLAB, false, \ 1457 "Print (survivor space) promotion labs sizing decisions") \ 1458 \ 1459 product(intx, ParGCArrayScanChunk, 50, \ 1460 "Scan a subset and push remainder, if array is bigger than this") \ 1461 \ 1462 product(bool, ParGCUseLocalOverflow, false, \ 1463 "Instead of a global overflow list, use local overflow stacks") \ 1464 \ 1465 product(bool, ParGCTrimOverflow, true, \ 1466 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ 1467 \ 1468 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 1469 "Whether we should simulate work queue overflow in ParNew") \ 1470 \ 1471 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1472 "An `interval' counter that determines how frequently " \ 1473 "we simulate overflow; a smaller number increases frequency") \ 1474 \ 1475 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1476 "The desired number of objects to claim from the overflow list") \ 1477 \ 1478 diagnostic(uintx, ParGCStridesPerThread, 2, \ 1479 "The number of strides per worker thread that we divide up the " \ 1480 "card table scanning work into") \ 1481 \ 1482 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 1483 "The number of cards in each chunk of the parallel chunks used " \ 1484 "during card table scanning") \ 1485 \ 1486 product(uintx, CMSParPromoteBlocksToClaim, 16, \ 1487 "Number of blocks to attempt to claim when refilling CMS LAB for "\ 1488 "parallel GC.") \ 1489 \ 1490 product(uintx, OldPLABWeight, 50, \ 1491 "Percentage (0-100) used to weight the current sample when" \ 1492 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ 1493 \ 1494 product(bool, ResizeOldPLAB, true, \ 1495 "Dynamically resize (old gen) promotion labs") \ 1496 \ 1497 product(bool, PrintOldPLAB, false, \ 1498 "Print (old gen) promotion labs sizing decisions") \ 1499 \ 1500 product(uintx, CMSOldPLABMin, 16, \ 1501 "Min size of CMS gen promotion lab caches per worker per blksize")\ 1502 \ 1503 product(uintx, CMSOldPLABMax, 1024, \ 1504 "Max size of CMS gen promotion lab caches per worker per blksize")\ 1505 \ 1506 product(uintx, CMSOldPLABNumRefills, 4, \ 1507 "Nominal number of refills of CMS gen promotion lab cache" \ 1508 " per worker per block size") \ 1509 \ 1510 product(bool, CMSOldPLABResizeQuicker, false, \ 1511 "Whether to react on-the-fly during a scavenge to a sudden" \ 1512 " change in block demand rate") \ 1513 \ 1514 product(uintx, CMSOldPLABToleranceFactor, 4, \ 1515 "The tolerance of the phase-change detector for on-the-fly" \ 1516 " PLAB resizing during a scavenge") \ 1517 \ 1518 product(uintx, CMSOldPLABReactivityFactor, 2, \ 1519 "The gain in the feedback loop for on-the-fly PLAB resizing" \ 1520 " during a scavenge") \ 1521 \ 1522 product(bool, AlwaysPreTouch, false, \ 1523 "It forces all freshly committed pages to be pre-touched.") \ 1524 \ 1525 product_pd(uintx, CMSYoungGenPerWorker, \ 1526 "The maximum size of young gen chosen by default per GC worker " \ 1527 "thread available") \ 1528 \ 1529 product(bool, CMSIncrementalMode, false, \ 1530 "Whether CMS GC should operate in \"incremental\" mode") \ 1531 \ 1532 product(uintx, CMSIncrementalDutyCycle, 10, \ 1533 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ 1534 "CMSIncrementalPacing is enabled, then this is just the initial" \ 1535 "value") \ 1536 \ 1537 product(bool, CMSIncrementalPacing, true, \ 1538 "Whether the CMS incremental mode duty cycle should be " \ 1539 "automatically adjusted") \ 1540 \ 1541 product(uintx, CMSIncrementalDutyCycleMin, 0, \ 1542 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ 1543 "enabled (a percentage, 0-100)") \ 1544 \ 1545 product(uintx, CMSIncrementalSafetyFactor, 10, \ 1546 "Percentage (0-100) used to add conservatism when computing the " \ 1547 "duty cycle") \ 1548 \ 1549 product(uintx, CMSIncrementalOffset, 0, \ 1550 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ 1551 " is shifted to the right within the period between young GCs") \ 1552 \ 1553 product(uintx, CMSExpAvgFactor, 50, \ 1554 "Percentage (0-100) used to weight the current sample when" \ 1555 "computing exponential averages for CMS statistics.") \ 1556 \ 1557 product(uintx, CMS_FLSWeight, 75, \ 1558 "Percentage (0-100) used to weight the current sample when" \ 1559 "computing exponentially decating averages for CMS FLS statistics.") \ 1560 \ 1561 product(uintx, CMS_FLSPadding, 1, \ 1562 "The multiple of deviation from mean to use for buffering" \ 1563 "against volatility in free list demand.") \ 1564 \ 1565 product(uintx, FLSCoalescePolicy, 2, \ 1566 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ 1567 \ 1568 product(bool, FLSAlwaysCoalesceLarge, false, \ 1569 "CMS: Larger free blocks are always available for coalescing") \ 1570 \ 1571 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 1572 "CMS: the smaller the percentage the greater the coalition force")\ 1573 \ 1574 product(double, CMSSmallCoalSurplusPercent, 1.05, \ 1575 "CMS: the factor by which to inflate estimated demand of small" \ 1576 " block sizes to prevent coalescing with an adjoining block") \ 1577 \ 1578 product(double, CMSLargeCoalSurplusPercent, 0.95, \ 1579 "CMS: the factor by which to inflate estimated demand of large" \ 1580 " block sizes to prevent coalescing with an adjoining block") \ 1581 \ 1582 product(double, CMSSmallSplitSurplusPercent, 1.10, \ 1583 "CMS: the factor by which to inflate estimated demand of small" \ 1584 " block sizes to prevent splitting to supply demand for smaller" \ 1585 " blocks") \ 1586 \ 1587 product(double, CMSLargeSplitSurplusPercent, 1.00, \ 1588 "CMS: the factor by which to inflate estimated demand of large" \ 1589 " block sizes to prevent splitting to supply demand for smaller" \ 1590 " blocks") \ 1591 \ 1592 product(bool, CMSExtrapolateSweep, false, \ 1593 "CMS: cushion for block demand during sweep") \ 1594 \ 1595 product(uintx, CMS_SweepWeight, 75, \ 1596 "Percentage (0-100) used to weight the current sample when " \ 1597 "computing exponentially decaying average for inter-sweep " \ 1598 "duration") \ 1599 \ 1600 product(uintx, CMS_SweepPadding, 1, \ 1601 "The multiple of deviation from mean to use for buffering " \ 1602 "against volatility in inter-sweep duration.") \ 1603 \ 1604 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1605 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1606 "duration exceeds this threhold in milliseconds") \ 1607 \ 1608 develop(bool, CMSTraceIncrementalMode, false, \ 1609 "Trace CMS incremental mode") \ 1610 \ 1611 develop(bool, CMSTraceIncrementalPacing, false, \ 1612 "Trace CMS incremental mode pacing computation") \ 1613 \ 1614 develop(bool, CMSTraceThreadState, false, \ 1615 "Trace the CMS thread state (enable the trace_state() method)") \ 1616 \ 1617 product(bool, CMSClassUnloadingEnabled, true, \ 1618 "Whether class unloading enabled when using CMS GC") \ 1619 \ 1620 product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1621 "When CMS class unloading is enabled, the maximum CMS cycle count"\ 1622 " for which classes may not be unloaded") \ 1623 \ 1624 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ 1625 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ 1626 \ 1627 product(bool, UseCMSCompactAtFullCollection, true, \ 1628 "Use mark sweep compact at full collections") \ 1629 \ 1630 product(uintx, CMSFullGCsBeforeCompaction, 0, \ 1631 "Number of CMS full collection done before compaction if > 0") \ 1632 \ 1633 develop(intx, CMSDictionaryChoice, 0, \ 1634 "Use BinaryTreeDictionary as default in the CMS generation") \ 1635 \ 1636 product(uintx, CMSIndexedFreeListReplenish, 4, \ 1637 "Replenish an indexed free list with this number of chunks") \ 1638 \ 1639 product(bool, CMSReplenishIntermediate, true, \ 1640 "Replenish all intermediate free-list caches") \ 1641 \ 1642 product(bool, CMSSplitIndexedFreeListBlocks, true, \ 1643 "When satisfying batched demand, split blocks from the " \ 1644 "IndexedFreeList whose size is a multiple of requested size") \ 1645 \ 1646 product(bool, CMSLoopWarn, false, \ 1647 "Warn in case of excessive CMS looping") \ 1648 \ 1649 develop(bool, CMSOverflowEarlyRestoration, false, \ 1650 "Whether preserved marks should be restored early") \ 1651 \ 1652 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1653 "Size of marking stack") \ 1654 \ 1655 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1656 "Max size of marking stack") \ 1657 \ 1658 notproduct(bool, CMSMarkStackOverflowALot, false, \ 1659 "Whether we should simulate frequent marking stack / work queue" \ 1660 " overflow") \ 1661 \ 1662 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1663 "An `interval' counter that determines how frequently" \ 1664 " we simulate overflow; a smaller number increases frequency") \ 1665 \ 1666 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1667 "(Temporary, subject to experimentation)" \ 1668 "Maximum number of abortable preclean iterations, if > 0") \ 1669 \ 1670 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1671 "(Temporary, subject to experimentation)" \ 1672 "Maximum time in abortable preclean in ms") \ 1673 \ 1674 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1675 "(Temporary, subject to experimentation)" \ 1676 "Nominal minimum work per abortable preclean iteration") \ 1677 \ 1678 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1679 "(Temporary, subject to experimentation)" \ 1680 " Time that we sleep between iterations when not given" \ 1681 " enough work per iteration") \ 1682 \ 1683 product(uintx, CMSRescanMultiple, 32, \ 1684 "Size (in cards) of CMS parallel rescan task") \ 1685 \ 1686 product(uintx, CMSConcMarkMultiple, 32, \ 1687 "Size (in cards) of CMS concurrent MT marking task") \ 1688 \ 1689 product(bool, CMSAbortSemantics, false, \ 1690 "Whether abort-on-overflow semantics is implemented") \ 1691 \ 1692 product(bool, CMSParallelInitialMarkEnabled, true, \ 1693 "Use the parallel initial mark.") \ 1694 \ 1695 product(bool, CMSParallelRemarkEnabled, true, \ 1696 "Whether parallel remark enabled (only if ParNewGC)") \ 1697 \ 1698 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1699 "Whether parallel remark of survivor space" \ 1700 " enabled (effective only if CMSParallelRemarkEnabled)") \ 1701 \ 1702 product(bool, CMSPLABRecordAlways, true, \ 1703 "Whether to always record survivor space PLAB bdries" \ 1704 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ 1705 \ 1706 product(bool, CMSEdenChunksRecordAlways, true, \ 1707 "Whether to always record eden chunks used for " \ 1708 "the parallel initial mark or remark of eden" ) \ 1709 \ 1710 product(bool, CMSPrintEdenSurvivorChunks, false, \ 1711 "Print the eden and the survivor chunks used for the parallel " \ 1712 "initial mark or remark of the eden/survivor spaces") \ 1713 \ 1714 product(bool, CMSConcurrentMTEnabled, true, \ 1715 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ 1716 \ 1717 product(bool, CMSPrecleaningEnabled, true, \ 1718 "Whether concurrent precleaning enabled") \ 1719 \ 1720 product(uintx, CMSPrecleanIter, 3, \ 1721 "Maximum number of precleaning iteration passes") \ 1722 \ 1723 product(uintx, CMSPrecleanNumerator, 2, \ 1724 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1725 " ratio") \ 1726 \ 1727 product(uintx, CMSPrecleanDenominator, 3, \ 1728 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1729 " ratio") \ 1730 \ 1731 product(bool, CMSPrecleanRefLists1, true, \ 1732 "Preclean ref lists during (initial) preclean phase") \ 1733 \ 1734 product(bool, CMSPrecleanRefLists2, false, \ 1735 "Preclean ref lists during abortable preclean phase") \ 1736 \ 1737 product(bool, CMSPrecleanSurvivors1, false, \ 1738 "Preclean survivors during (initial) preclean phase") \ 1739 \ 1740 product(bool, CMSPrecleanSurvivors2, true, \ 1741 "Preclean survivors during abortable preclean phase") \ 1742 \ 1743 product(uintx, CMSPrecleanThreshold, 1000, \ 1744 "Don't re-iterate if #dirty cards less than this") \ 1745 \ 1746 product(bool, CMSCleanOnEnter, true, \ 1747 "Clean-on-enter optimization for reducing number of dirty cards") \ 1748 \ 1749 product(uintx, CMSRemarkVerifyVariant, 1, \ 1750 "Choose variant (1,2) of verification following remark") \ 1751 \ 1752 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1753 "If Eden used is below this value, don't try to schedule remark") \ 1754 \ 1755 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1756 "The Eden occupancy % at which to try and schedule remark pause") \ 1757 \ 1758 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1759 "Start sampling Eden top at least before yg occupancy reaches" \ 1760 " 1/<ratio> of the size at which we plan to schedule remark") \ 1761 \ 1762 product(uintx, CMSSamplingGrain, 16*K, \ 1763 "The minimum distance between eden samples for CMS (see above)") \ 1764 \ 1765 product(bool, CMSScavengeBeforeRemark, false, \ 1766 "Attempt scavenge before the CMS remark step") \ 1767 \ 1768 develop(bool, CMSTraceSweeper, false, \ 1769 "Trace some actions of the CMS sweeper") \ 1770 \ 1771 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1772 "Don't drain below this size per parallel worker/thief") \ 1773 \ 1774 manageable(intx, CMSWaitDuration, 2000, \ 1775 "Time in milliseconds that CMS thread waits for young GC") \ 1776 \ 1777 develop(uintx, CMSCheckInterval, 1000, \ 1778 "Interval in milliseconds that CMS thread checks if it " \ 1779 "should start a collection cycle") \ 1780 \ 1781 product(bool, CMSYield, true, \ 1782 "Yield between steps of concurrent mark & sweep") \ 1783 \ 1784 product(uintx, CMSBitMapYieldQuantum, 10*M, \ 1785 "Bitmap operations should process at most this many bits" \ 1786 "between yields") \ 1787 \ 1788 product(bool, CMSDumpAtPromotionFailure, false, \ 1789 "Dump useful information about the state of the CMS old " \ 1790 " generation upon a promotion failure.") \ 1791 \ 1792 product(bool, CMSPrintChunksInDump, false, \ 1793 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1794 " more detailed information about the free chunks.") \ 1795 \ 1796 product(bool, CMSPrintObjectsInDump, false, \ 1797 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1798 " more detailed information about the allocated objects.") \ 1799 \ 1800 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1801 "Verify that all refs across the FLS boundary " \ 1802 " are to valid objects") \ 1803 \ 1804 diagnostic(bool, FLSVerifyLists, false, \ 1805 "Do lots of (expensive) FreeListSpace verification") \ 1806 \ 1807 diagnostic(bool, FLSVerifyIndexTable, false, \ 1808 "Do lots of (expensive) FLS index table verification") \ 1809 \ 1810 develop(bool, FLSVerifyDictionary, false, \ 1811 "Do lots of (expensive) FLS dictionary verification") \ 1812 \ 1813 develop(bool, VerifyBlockOffsetArray, false, \ 1814 "Do (expensive!) block offset array verification") \ 1815 \ 1816 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 1817 "Maintain _unallocated_block in BlockOffsetArray" \ 1818 " (currently applicable only to CMS collector)") \ 1819 \ 1820 develop(bool, TraceCMSState, false, \ 1821 "Trace the state of the CMS collection") \ 1822 \ 1823 product(intx, RefDiscoveryPolicy, 0, \ 1824 "Whether reference-based(0) or referent-based(1)") \ 1825 \ 1826 product(bool, ParallelRefProcEnabled, false, \ 1827 "Enable parallel reference processing whenever possible") \ 1828 \ 1829 product(bool, ParallelRefProcBalancingEnabled, true, \ 1830 "Enable balancing of reference processing queues") \ 1831 \ 1832 product(uintx, CMSTriggerRatio, 80, \ 1833 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1834 "allocated before a CMS collection cycle commences") \ 1835 \ 1836 product(uintx, CMSBootstrapOccupancy, 50, \ 1837 "Percentage CMS generation occupancy at which to " \ 1838 "initiate CMS collection for bootstrapping collection stats") \ 1839 \ 1840 product(intx, CMSInitiatingOccupancyFraction, -1, \ 1841 "Percentage CMS generation occupancy to start a CMS collection " \ 1842 "cycle. A negative value means that CMSTriggerRatio is used") \ 1843 \ 1844 product(uintx, InitiatingHeapOccupancyPercent, 45, \ 1845 "Percentage of the (entire) heap occupancy to start a " \ 1846 "concurrent GC cycle. It is used by GCs that trigger a " \ 1847 "concurrent GC cycle based on the occupancy of the entire heap, " \ 1848 "not just one of the generations (e.g., G1). A value of 0 " \ 1849 "denotes 'do constant GC cycles'.") \ 1850 \ 1851 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1852 "Only use occupancy as a crierion for starting a CMS collection") \ 1853 \ 1854 product(uintx, CMSIsTooFullPercentage, 98, \ 1855 "An absolute ceiling above which CMS will always consider the " \ 1856 "unloading of classes when class unloading is enabled") \ 1857 \ 1858 develop(bool, CMSTestInFreeList, false, \ 1859 "Check if the coalesced range is already in the " \ 1860 "free lists as claimed") \ 1861 \ 1862 notproduct(bool, CMSVerifyReturnedBytes, false, \ 1863 "Check that all the garbage collected was returned to the " \ 1864 "free lists.") \ 1865 \ 1866 notproduct(bool, ScavengeALot, false, \ 1867 "Force scavenge at every Nth exit from the runtime system " \ 1868 "(N=ScavengeALotInterval)") \ 1869 \ 1870 develop(bool, FullGCALot, false, \ 1871 "Force full gc at every Nth exit from the runtime system " \ 1872 "(N=FullGCALotInterval)") \ 1873 \ 1874 notproduct(bool, GCALotAtAllSafepoints, false, \ 1875 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1876 \ 1877 product(bool, PrintPromotionFailure, false, \ 1878 "Print additional diagnostic information following " \ 1879 " promotion failure") \ 1880 \ 1881 notproduct(bool, PromotionFailureALot, false, \ 1882 "Use promotion failure handling on every youngest generation " \ 1883 "collection") \ 1884 \ 1885 develop(uintx, PromotionFailureALotCount, 1000, \ 1886 "Number of promotion failures occurring at ParGCAllocBuffer" \ 1887 "refill attempts (ParNew) or promotion attempts " \ 1888 "(other young collectors) ") \ 1889 \ 1890 develop(uintx, PromotionFailureALotInterval, 5, \ 1891 "Total collections between promotion failures alot") \ 1892 \ 1893 experimental(uintx, WorkStealingSleepMillis, 1, \ 1894 "Sleep time when sleep is used for yields") \ 1895 \ 1896 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 1897 "Number of yields before a sleep is done during workstealing") \ 1898 \ 1899 experimental(uintx, WorkStealingHardSpins, 4096, \ 1900 "Number of iterations in a spin loop between checks on " \ 1901 "time out of hard spin") \ 1902 \ 1903 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 1904 "Ratio of hard spins to calls to yield") \ 1905 \ 1906 develop(uintx, ObjArrayMarkingStride, 512, \ 1907 "Number of ObjArray elements to push onto the marking stack" \ 1908 "before pushing a continuation entry") \ 1909 \ 1910 develop(bool, MetadataAllocationFailALot, false, \ 1911 "Fail metadata allocations at intervals controlled by " \ 1912 "MetadataAllocationFailALotInterval") \ 1913 \ 1914 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 1915 "metadata allocation failure alot interval") \ 1916 \ 1917 develop(bool, MetaDataDeallocateALot, false, \ 1918 "Deallocation bunches of metadata at intervals controlled by " \ 1919 "MetaDataAllocateALotInterval") \ 1920 \ 1921 develop(uintx, MetaDataDeallocateALotInterval, 100, \ 1922 "Metadata deallocation alot interval") \ 1923 \ 1924 develop(bool, TraceMetadataChunkAllocation, false, \ 1925 "Trace chunk metadata allocations") \ 1926 \ 1927 product(bool, TraceMetadataHumongousAllocation, false, \ 1928 "Trace humongous metadata allocations") \ 1929 \ 1930 develop(bool, TraceMetavirtualspaceAllocation, false, \ 1931 "Trace virtual space metadata allocations") \ 1932 \ 1933 notproduct(bool, ExecuteInternalVMTests, false, \ 1934 "Enable execution of internal VM tests.") \ 1935 \ 1936 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 1937 \ 1938 product_pd(bool, ResizeTLAB, \ 1939 "Dynamically resize tlab size for threads") \ 1940 \ 1941 product(bool, ZeroTLAB, false, \ 1942 "Zero out the newly created TLAB") \ 1943 \ 1944 product(bool, FastTLABRefill, true, \ 1945 "Use fast TLAB refill code") \ 1946 \ 1947 product(bool, PrintTLAB, false, \ 1948 "Print various TLAB related information") \ 1949 \ 1950 product(bool, TLABStats, true, \ 1951 "Print various TLAB related information") \ 1952 \ 1953 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ 1954 "Enable LowMemoryProtection")) \ 1955 \ 1956 product_pd(bool, NeverActAsServerClassMachine, \ 1957 "Never act like a server-class machine") \ 1958 \ 1959 product(bool, AlwaysActAsServerClassMachine, false, \ 1960 "Always act like a server-class machine") \ 1961 \ 1962 product_pd(uint64_t, MaxRAM, \ 1963 "Real memory size (in bytes) used to set maximum heap size") \ 1964 \ 1965 product(uintx, ErgoHeapSizeLimit, 0, \ 1966 "Maximum ergonomically set heap size (in bytes); zero means use " \ 1967 "MaxRAM / MaxRAMFraction") \ 1968 \ 1969 product(uintx, MaxRAMFraction, 4, \ 1970 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1971 "size") \ 1972 \ 1973 product(uintx, DefaultMaxRAMFraction, 4, \ 1974 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1975 "size; deprecated: to be renamed to MaxRAMFraction") \ 1976 \ 1977 product(uintx, MinRAMFraction, 2, \ 1978 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ 1979 "size on systems with small physical memory size") \ 1980 \ 1981 product(uintx, InitialRAMFraction, 64, \ 1982 "Fraction (1/n) of real memory used for initial heap size") \ 1983 \ 1984 develop(uintx, MaxVirtMemFraction, 2, \ 1985 "Maximum fraction (1/n) of virtual memory used for ergonomically" \ 1986 "determining maximum heap size") \ 1987 \ 1988 product(bool, UseAutoGCSelectPolicy, false, \ 1989 "Use automatic collection selection policy") \ 1990 \ 1991 product(uintx, AutoGCSelectPauseMillis, 5000, \ 1992 "Automatic GC selection pause threshhold in ms") \ 1993 \ 1994 product(bool, UseAdaptiveSizePolicy, true, \ 1995 "Use adaptive generation sizing policies") \ 1996 \ 1997 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 1998 "Use adaptive survivor sizing policies") \ 1999 \ 2000 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 2001 "Use adaptive young-old sizing policies at minor collections") \ 2002 \ 2003 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 2004 "Use adaptive young-old sizing policies at major collections") \ 2005 \ 2006 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 2007 "Use statistics from System.GC for adaptive size policy") \ 2008 \ 2009 product(bool, UseAdaptiveGCBoundary, false, \ 2010 "Allow young-old boundary to move") \ 2011 \ 2012 develop(bool, TraceAdaptiveGCBoundary, false, \ 2013 "Trace young-old boundary moves") \ 2014 \ 2015 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 2016 "Resize the virtual spaces of the young or old generations") \ 2017 \ 2018 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 2019 "Policy for changeing generation size for throughput goals") \ 2020 \ 2021 product(uintx, AdaptiveSizePausePolicy, 0, \ 2022 "Policy for changing generation size for pause goals") \ 2023 \ 2024 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 2025 "Adjust tenured generation to achive a minor pause goal") \ 2026 \ 2027 develop(bool, PSAdjustYoungGenForMajorPause, false, \ 2028 "Adjust young generation to achive a major pause goal") \ 2029 \ 2030 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 2031 "Number of steps where heuristics is used before data is used") \ 2032 \ 2033 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2034 "Number of collections before the adaptive sizing is started") \ 2035 \ 2036 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2037 "Collection interval for printing information; zero means never") \ 2038 \ 2039 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2040 "Use adaptive minimum footprint as a goal") \ 2041 \ 2042 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2043 "Weight given to exponential resizing, between 0 and 100") \ 2044 \ 2045 product(uintx, AdaptiveTimeWeight, 25, \ 2046 "Weight given to time in adaptive policy, between 0 and 100") \ 2047 \ 2048 product(uintx, PausePadding, 1, \ 2049 "How much buffer to keep for pause time") \ 2050 \ 2051 product(uintx, PromotedPadding, 3, \ 2052 "How much buffer to keep for promotion failure") \ 2053 \ 2054 product(uintx, SurvivorPadding, 3, \ 2055 "How much buffer to keep for survivor overflow") \ 2056 \ 2057 product(uintx, ThresholdTolerance, 10, \ 2058 "Allowed collection cost difference between generations") \ 2059 \ 2060 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 2061 "If collection costs are within margin, reduce both by full " \ 2062 "delta") \ 2063 \ 2064 product(uintx, YoungGenerationSizeIncrement, 20, \ 2065 "Adaptive size percentage change in young generation") \ 2066 \ 2067 product(uintx, YoungGenerationSizeSupplement, 80, \ 2068 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 2069 \ 2070 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 2071 "Decay factor to YoungedGenerationSizeSupplement") \ 2072 \ 2073 product(uintx, TenuredGenerationSizeIncrement, 20, \ 2074 "Adaptive size percentage change in tenured generation") \ 2075 \ 2076 product(uintx, TenuredGenerationSizeSupplement, 80, \ 2077 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 2078 \ 2079 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 2080 "Decay factor to TenuredGenerationSizeIncrement") \ 2081 \ 2082 product(uintx, MaxGCPauseMillis, max_uintx, \ 2083 "Adaptive size policy maximum GC pause time goal in msec, " \ 2084 "or (G1 Only) the max. GC time per MMU time slice") \ 2085 \ 2086 product(uintx, GCPauseIntervalMillis, 0, \ 2087 "Time slice for MMU specification") \ 2088 \ 2089 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 2090 "Adaptive size policy maximum GC minor pause time goal in msec") \ 2091 \ 2092 product(uintx, GCTimeRatio, 99, \ 2093 "Adaptive size policy application time to GC time ratio") \ 2094 \ 2095 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 2096 "Adaptive size scale down factor for shrinking") \ 2097 \ 2098 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 2099 "Adaptive size decays the major cost for long major intervals") \ 2100 \ 2101 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 2102 "Time scale over which major costs decay") \ 2103 \ 2104 product(uintx, MinSurvivorRatio, 3, \ 2105 "Minimum ratio of young generation/survivor space size") \ 2106 \ 2107 product(uintx, InitialSurvivorRatio, 8, \ 2108 "Initial ratio of eden/survivor space size") \ 2109 \ 2110 product(uintx, BaseFootPrintEstimate, 256*M, \ 2111 "Estimate of footprint other than Java Heap") \ 2112 \ 2113 product(bool, UseGCOverheadLimit, true, \ 2114 "Use policy to limit of proportion of time spent in GC " \ 2115 "before an OutOfMemory error is thrown") \ 2116 \ 2117 product(uintx, GCTimeLimit, 98, \ 2118 "Limit of proportion of time spent in GC before an OutOfMemory" \ 2119 "error is thrown (used with GCHeapFreeLimit)") \ 2120 \ 2121 product(uintx, GCHeapFreeLimit, 2, \ 2122 "Minimum percentage of free space after a full GC before an " \ 2123 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 2124 \ 2125 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 2126 "Number of consecutive collections before gc time limit fires") \ 2127 \ 2128 product(bool, PrintAdaptiveSizePolicy, false, \ 2129 "Print information about AdaptiveSizePolicy") \ 2130 \ 2131 product(intx, PrefetchCopyIntervalInBytes, -1, \ 2132 "How far ahead to prefetch destination area (<= 0 means off)") \ 2133 \ 2134 product(intx, PrefetchScanIntervalInBytes, -1, \ 2135 "How far ahead to prefetch scan area (<= 0 means off)") \ 2136 \ 2137 product(intx, PrefetchFieldsAhead, -1, \ 2138 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 2139 \ 2140 diagnostic(bool, VerifySilently, false, \ 2141 "Don't print print the verification progress") \ 2142 \ 2143 diagnostic(bool, VerifyDuringStartup, false, \ 2144 "Verify memory system before executing any Java code " \ 2145 "during VM initialization") \ 2146 \ 2147 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 2148 "Verify system before exiting") \ 2149 \ 2150 diagnostic(bool, VerifyBeforeGC, false, \ 2151 "Verify memory system before GC") \ 2152 \ 2153 diagnostic(bool, VerifyAfterGC, false, \ 2154 "Verify memory system after GC") \ 2155 \ 2156 diagnostic(bool, VerifyDuringGC, false, \ 2157 "Verify memory system during GC (between phases)") \ 2158 \ 2159 diagnostic(bool, GCParallelVerificationEnabled, true, \ 2160 "Enable parallel memory system verification") \ 2161 \ 2162 diagnostic(bool, DeferInitialCardMark, false, \ 2163 "When +ReduceInitialCardMarks, explicitly defer any that " \ 2164 "may arise from new_pre_store_barrier") \ 2165 \ 2166 diagnostic(bool, VerifyRememberedSets, false, \ 2167 "Verify GC remembered sets") \ 2168 \ 2169 diagnostic(bool, VerifyObjectStartArray, true, \ 2170 "Verify GC object start array if verify before/after") \ 2171 \ 2172 product(bool, DisableExplicitGC, false, \ 2173 "Tells whether calling System.gc() does a full GC") \ 2174 \ 2175 notproduct(bool, CheckMemoryInitialization, false, \ 2176 "Checks memory initialization") \ 2177 \ 2178 product(bool, CollectGen0First, false, \ 2179 "Collect youngest generation before each full GC") \ 2180 \ 2181 diagnostic(bool, BindCMSThreadToCPU, false, \ 2182 "Bind CMS Thread to CPU if possible") \ 2183 \ 2184 diagnostic(uintx, CPUForCMSThread, 0, \ 2185 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 2186 \ 2187 product(bool, BindGCTaskThreadsToCPUs, false, \ 2188 "Bind GCTaskThreads to CPUs if possible") \ 2189 \ 2190 product(bool, UseGCTaskAffinity, false, \ 2191 "Use worker affinity when asking for GCTasks") \ 2192 \ 2193 product(uintx, ProcessDistributionStride, 4, \ 2194 "Stride through processors when distributing processes") \ 2195 \ 2196 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 2197 "number of times the coordinator GC thread will sleep while " \ 2198 "yielding before giving up and resuming GC") \ 2199 \ 2200 product(uintx, CMSYieldSleepCount, 0, \ 2201 "number of times a GC thread (minus the coordinator) " \ 2202 "will sleep while yielding before giving up and resuming GC") \ 2203 \ 2204 /* gc tracing */ \ 2205 manageable(bool, PrintGC, false, \ 2206 "Print message at garbage collect") \ 2207 \ 2208 manageable(bool, PrintGCDetails, false, \ 2209 "Print more details at garbage collect") \ 2210 \ 2211 manageable(bool, PrintGCDateStamps, false, \ 2212 "Print date stamps at garbage collect") \ 2213 \ 2214 manageable(bool, PrintGCTimeStamps, false, \ 2215 "Print timestamps at garbage collect") \ 2216 \ 2217 product(bool, PrintGCTaskTimeStamps, false, \ 2218 "Print timestamps for individual gc worker thread tasks") \ 2219 \ 2220 develop(intx, ConcGCYieldTimeout, 0, \ 2221 "If non-zero, assert that GC threads yield within this # of ms.") \ 2222 \ 2223 notproduct(bool, TraceMarkSweep, false, \ 2224 "Trace mark sweep") \ 2225 \ 2226 product(bool, PrintReferenceGC, false, \ 2227 "Print times spent handling reference objects during GC " \ 2228 " (enabled only when PrintGCDetails)") \ 2229 \ 2230 develop(bool, TraceReferenceGC, false, \ 2231 "Trace handling of soft/weak/final/phantom references") \ 2232 \ 2233 develop(bool, TraceFinalizerRegistration, false, \ 2234 "Trace registration of final references") \ 2235 \ 2236 notproduct(bool, TraceScavenge, false, \ 2237 "Trace scavenge") \ 2238 \ 2239 product_rw(bool, TraceClassLoading, false, \ 2240 "Trace all classes loaded") \ 2241 \ 2242 product(bool, TraceClassLoadingPreorder, false, \ 2243 "Trace all classes loaded in order referenced (not loaded)") \ 2244 \ 2245 product_rw(bool, TraceClassUnloading, false, \ 2246 "Trace unloading of classes") \ 2247 \ 2248 product_rw(bool, TraceLoaderConstraints, false, \ 2249 "Trace loader constraints") \ 2250 \ 2251 develop(bool, TraceClassLoaderData, false, \ 2252 "Trace class loader loader_data lifetime") \ 2253 \ 2254 product(uintx, InitialBootClassLoaderMetaspaceSize, \ 2255 NOT_LP64(2200*K) LP64_ONLY(4*M), \ 2256 "Initial size of the boot class loader data metaspace") \ 2257 \ 2258 product(bool, TraceGen0Time, false, \ 2259 "Trace accumulated time for Gen 0 collection") \ 2260 \ 2261 product(bool, TraceGen1Time, false, \ 2262 "Trace accumulated time for Gen 1 collection") \ 2263 \ 2264 product(bool, PrintTenuringDistribution, false, \ 2265 "Print tenuring age information") \ 2266 \ 2267 product_rw(bool, PrintHeapAtGC, false, \ 2268 "Print heap layout before and after each GC") \ 2269 \ 2270 product_rw(bool, PrintHeapAtGCExtended, false, \ 2271 "Prints extended information about the layout of the heap " \ 2272 "when -XX:+PrintHeapAtGC is set") \ 2273 \ 2274 product(bool, PrintHeapAtSIGBREAK, true, \ 2275 "Print heap layout in response to SIGBREAK") \ 2276 \ 2277 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 2278 "Print a class histogram before any major stop-world GC") \ 2279 \ 2280 manageable(bool, PrintClassHistogramAfterFullGC, false, \ 2281 "Print a class histogram after any major stop-world GC") \ 2282 \ 2283 manageable(bool, PrintClassHistogram, false, \ 2284 "Print a histogram of class instances") \ 2285 \ 2286 develop(bool, TraceWorkGang, false, \ 2287 "Trace activities of work gangs") \ 2288 \ 2289 product(bool, TraceParallelOldGCTasks, false, \ 2290 "Trace multithreaded GC activity") \ 2291 \ 2292 develop(bool, TraceBlockOffsetTable, false, \ 2293 "Print BlockOffsetTable maps") \ 2294 \ 2295 develop(bool, TraceCardTableModRefBS, false, \ 2296 "Print CardTableModRefBS maps") \ 2297 \ 2298 develop(bool, TraceGCTaskManager, false, \ 2299 "Trace actions of the GC task manager") \ 2300 \ 2301 develop(bool, TraceGCTaskQueue, false, \ 2302 "Trace actions of the GC task queues") \ 2303 \ 2304 diagnostic(bool, TraceGCTaskThread, false, \ 2305 "Trace actions of the GC task threads") \ 2306 \ 2307 product(bool, PrintParallelOldGCPhaseTimes, false, \ 2308 "Print the time taken by each parallel old gc phase." \ 2309 "PrintGCDetails must also be enabled.") \ 2310 \ 2311 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2312 "Trace parallel old gc marking phase") \ 2313 \ 2314 develop(bool, TraceParallelOldGCSummaryPhase, false, \ 2315 "Trace parallel old gc summary phase") \ 2316 \ 2317 develop(bool, TraceParallelOldGCCompactionPhase, false, \ 2318 "Trace parallel old gc compaction phase") \ 2319 \ 2320 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2321 "Trace parallel old gc dense prefix computation") \ 2322 \ 2323 develop(bool, IgnoreLibthreadGPFault, false, \ 2324 "Suppress workaround for libthread GP fault") \ 2325 \ 2326 product(bool, PrintJNIGCStalls, false, \ 2327 "Print diagnostic message when GC is stalled" \ 2328 "by JNI critical section") \ 2329 \ 2330 experimental(double, ObjectCountCutOffPercent, 0.5, \ 2331 "The percentage of the used heap that the instances of a class " \ 2332 "must occupy for the class to generate a trace event.") \ 2333 \ 2334 /* GC log rotation setting */ \ 2335 \ 2336 product(bool, UseGCLogFileRotation, false, \ 2337 "Prevent large gclog file for long running app. " \ 2338 "Requires -Xloggc:<filename>") \ 2339 \ 2340 product(uintx, NumberOfGCLogFiles, 0, \ 2341 "Number of gclog files in rotation, " \ 2342 "Default: 0, no rotation") \ 2343 \ 2344 product(uintx, GCLogFileSize, 0, \ 2345 "GC log file size, Default: 0 bytes, no rotation " \ 2346 "Only valid with UseGCLogFileRotation") \ 2347 \ 2348 /* JVMTI heap profiling */ \ 2349 \ 2350 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2351 "Trace JVMTI object tagging calls") \ 2352 \ 2353 diagnostic(bool, VerifyBeforeIteration, false, \ 2354 "Verify memory system before JVMTI iteration") \ 2355 \ 2356 /* compiler interface */ \ 2357 \ 2358 develop(bool, CIPrintCompilerName, false, \ 2359 "when CIPrint is active, print the name of the active compiler") \ 2360 \ 2361 develop(bool, CIPrintCompileQueue, false, \ 2362 "display the contents of the compile queue whenever a " \ 2363 "compilation is enqueued") \ 2364 \ 2365 develop(bool, CIPrintRequests, false, \ 2366 "display every request for compilation") \ 2367 \ 2368 product(bool, CITime, false, \ 2369 "collect timing information for compilation") \ 2370 \ 2371 develop(bool, CITimeEach, false, \ 2372 "display timing information after each successful compilation") \ 2373 \ 2374 develop(bool, CICountOSR, false, \ 2375 "use a separate counter when assigning ids to osr compilations") \ 2376 \ 2377 develop(bool, CICompileNatives, true, \ 2378 "compile native methods if supported by the compiler") \ 2379 \ 2380 develop_pd(bool, CICompileOSR, \ 2381 "compile on stack replacement methods if supported by the " \ 2382 "compiler") \ 2383 \ 2384 develop(bool, CIPrintMethodCodes, false, \ 2385 "print method bytecodes of the compiled code") \ 2386 \ 2387 develop(bool, CIPrintTypeFlow, false, \ 2388 "print the results of ciTypeFlow analysis") \ 2389 \ 2390 develop(bool, CITraceTypeFlow, false, \ 2391 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2392 \ 2393 develop(intx, OSROnlyBCI, -1, \ 2394 "OSR only at this bci. Negative values mean exclude that bci") \ 2395 \ 2396 /* compiler */ \ 2397 \ 2398 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2399 "Number of compiler threads to run") \ 2400 \ 2401 product(intx, CompilationPolicyChoice, 0, \ 2402 "which compilation policy (0/1)") \ 2403 \ 2404 develop(bool, UseStackBanging, true, \ 2405 "use stack banging for stack overflow checks (required for " \ 2406 "proper StackOverflow handling; disable only to measure cost " \ 2407 "of stackbanging)") \ 2408 \ 2409 develop(bool, UseStrictFP, true, \ 2410 "use strict fp if modifier strictfp is set") \ 2411 \ 2412 develop(bool, GenerateSynchronizationCode, true, \ 2413 "generate locking/unlocking code for synchronized methods and " \ 2414 "monitors") \ 2415 \ 2416 develop(bool, GenerateCompilerNullChecks, true, \ 2417 "Generate explicit null checks for loads/stores/calls") \ 2418 \ 2419 develop(bool, GenerateRangeChecks, true, \ 2420 "Generate range checks for array accesses") \ 2421 \ 2422 develop_pd(bool, ImplicitNullChecks, \ 2423 "generate code for implicit null checks") \ 2424 \ 2425 product(bool, PrintSafepointStatistics, false, \ 2426 "print statistics about safepoint synchronization") \ 2427 \ 2428 product(intx, PrintSafepointStatisticsCount, 300, \ 2429 "total number of safepoint statistics collected " \ 2430 "before printing them out") \ 2431 \ 2432 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2433 "print safepoint statistics only when safepoint takes" \ 2434 " more than PrintSafepointSatisticsTimeout in millis") \ 2435 \ 2436 product(bool, TraceSafepointCleanupTime, false, \ 2437 "print the break down of clean up tasks performed during" \ 2438 " safepoint") \ 2439 \ 2440 product(bool, Inline, true, \ 2441 "enable inlining") \ 2442 \ 2443 product(bool, ClipInlining, true, \ 2444 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2445 \ 2446 develop(bool, UseCHA, true, \ 2447 "enable CHA") \ 2448 \ 2449 product(bool, UseTypeProfile, true, \ 2450 "Check interpreter profile for historically monomorphic calls") \ 2451 \ 2452 notproduct(bool, TimeCompiler, false, \ 2453 "time the compiler") \ 2454 \ 2455 diagnostic(bool, PrintInlining, false, \ 2456 "prints inlining optimizations") \ 2457 \ 2458 product(bool, UsePopCountInstruction, false, \ 2459 "Use population count instruction") \ 2460 \ 2461 develop(bool, EagerInitialization, false, \ 2462 "Eagerly initialize classes if possible") \ 2463 \ 2464 develop(bool, TraceMethodReplacement, false, \ 2465 "Print when methods are replaced do to recompilation") \ 2466 \ 2467 develop(bool, PrintMethodFlushing, false, \ 2468 "print the nmethods being flushed") \ 2469 \ 2470 develop(bool, UseRelocIndex, false, \ 2471 "use an index to speed random access to relocations") \ 2472 \ 2473 develop(bool, StressCodeBuffers, false, \ 2474 "Exercise code buffer expansion and other rare state changes") \ 2475 \ 2476 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2477 "Generate extra debugging info for non-safepoints in nmethods") \ 2478 \ 2479 product(bool, PrintVMOptions, false, \ 2480 "Print flags that appeared on the command line") \ 2481 \ 2482 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2483 "Ignore unrecognized VM options") \ 2484 \ 2485 product(bool, PrintCommandLineFlags, false, \ 2486 "Print flags specified on command line or set by ergonomics") \ 2487 \ 2488 product(bool, PrintFlagsInitial, false, \ 2489 "Print all VM flags before argument processing and exit VM") \ 2490 \ 2491 product(bool, PrintFlagsFinal, false, \ 2492 "Print all VM flags after argument and ergonomic processing") \ 2493 \ 2494 notproduct(bool, PrintFlagsWithComments, false, \ 2495 "Print all VM flags with default values and descriptions and exit")\ 2496 \ 2497 diagnostic(bool, SerializeVMOutput, true, \ 2498 "Use a mutex to serialize output to tty and hotspot.log") \ 2499 \ 2500 diagnostic(bool, DisplayVMOutput, true, \ 2501 "Display all VM output on the tty, independently of LogVMOutput") \ 2502 \ 2503 diagnostic(bool, LogVMOutput, trueInDebug, \ 2504 "Save VM output to hotspot.log, or to LogFile") \ 2505 \ 2506 diagnostic(ccstr, LogFile, NULL, \ 2507 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ 2508 \ 2509 product(ccstr, ErrorFile, NULL, \ 2510 "If an error occurs, save the error data to this file " \ 2511 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2512 \ 2513 product(bool, DisplayVMOutputToStderr, false, \ 2514 "If DisplayVMOutput is true, display all VM output to stderr") \ 2515 \ 2516 product(bool, DisplayVMOutputToStdout, false, \ 2517 "If DisplayVMOutput is true, display all VM output to stdout") \ 2518 \ 2519 product(bool, UseHeavyMonitors, false, \ 2520 "use heavyweight instead of lightweight Java monitors") \ 2521 \ 2522 product(bool, PrintStringTableStatistics, false, \ 2523 "print statistics about the StringTable and SymbolTable") \ 2524 \ 2525 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2526 "print histogram of the symbol table") \ 2527 \ 2528 notproduct(bool, ExitVMOnVerifyError, false, \ 2529 "standard exit from VM if bytecode verify error " \ 2530 "(only in debug mode)") \ 2531 \ 2532 notproduct(ccstr, AbortVMOnException, NULL, \ 2533 "Call fatal if this exception is thrown. Example: " \ 2534 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2535 \ 2536 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ 2537 "Call fatal if the exception pointed by AbortVMOnException " \ 2538 "has this message.") \ 2539 \ 2540 develop(bool, DebugVtables, false, \ 2541 "add debugging code to vtable dispatch") \ 2542 \ 2543 develop(bool, PrintVtables, false, \ 2544 "print vtables when printing klass") \ 2545 \ 2546 notproduct(bool, PrintVtableStats, false, \ 2547 "print vtables stats at end of run") \ 2548 \ 2549 develop(bool, TraceCreateZombies, false, \ 2550 "trace creation of zombie nmethods") \ 2551 \ 2552 notproduct(bool, IgnoreLockingAssertions, false, \ 2553 "disable locking assertions (for speed)") \ 2554 \ 2555 product(bool, RangeCheckElimination, true, \ 2556 "Eliminate range checks") \ 2557 \ 2558 develop_pd(bool, UncommonNullCast, \ 2559 "track occurrences of null in casts; adjust compiler tactics") \ 2560 \ 2561 develop(bool, TypeProfileCasts, true, \ 2562 "treat casts like calls for purposes of type profiling") \ 2563 \ 2564 develop(bool, DelayCompilationDuringStartup, true, \ 2565 "Delay invoking the compiler until main application class is " \ 2566 "loaded") \ 2567 \ 2568 develop(bool, CompileTheWorld, false, \ 2569 "Compile all methods in all classes in bootstrap class path " \ 2570 "(stress test)") \ 2571 \ 2572 develop(bool, CompileTheWorldPreloadClasses, true, \ 2573 "Preload all classes used by a class before start loading") \ 2574 \ 2575 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 2576 "Force a safepoint every n compiles so sweeper can keep up") \ 2577 \ 2578 develop(bool, FillDelaySlots, true, \ 2579 "Fill delay slots (on SPARC only)") \ 2580 \ 2581 develop(bool, TimeLivenessAnalysis, false, \ 2582 "Time computation of bytecode liveness analysis") \ 2583 \ 2584 develop(bool, TraceLivenessGen, false, \ 2585 "Trace the generation of liveness analysis information") \ 2586 \ 2587 notproduct(bool, TraceLivenessQuery, false, \ 2588 "Trace queries of liveness analysis information") \ 2589 \ 2590 notproduct(bool, CollectIndexSetStatistics, false, \ 2591 "Collect information about IndexSets") \ 2592 \ 2593 develop(bool, UseLoopSafepoints, true, \ 2594 "Generate Safepoint nodes in every loop") \ 2595 \ 2596 develop(intx, FastAllocateSizeLimit, 128*K, \ 2597 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2598 "Inline allocations larger than this in doublewords must go slow")\ 2599 \ 2600 product(bool, AggressiveOpts, false, \ 2601 "Enable aggressive optimizations - see arguments.cpp") \ 2602 \ 2603 /* statistics */ \ 2604 develop(bool, CountCompiledCalls, false, \ 2605 "counts method invocations") \ 2606 \ 2607 notproduct(bool, CountRuntimeCalls, false, \ 2608 "counts VM runtime calls") \ 2609 \ 2610 develop(bool, CountJNICalls, false, \ 2611 "counts jni method invocations") \ 2612 \ 2613 notproduct(bool, CountJVMCalls, false, \ 2614 "counts jvm method invocations") \ 2615 \ 2616 notproduct(bool, CountRemovableExceptions, false, \ 2617 "count exceptions that could be replaced by branches due to " \ 2618 "inlining") \ 2619 \ 2620 notproduct(bool, ICMissHistogram, false, \ 2621 "produce histogram of IC misses") \ 2622 \ 2623 notproduct(bool, PrintClassStatistics, false, \ 2624 "prints class statistics at end of run") \ 2625 \ 2626 notproduct(bool, PrintMethodStatistics, false, \ 2627 "prints method statistics at end of run") \ 2628 \ 2629 /* interpreter */ \ 2630 develop(bool, ClearInterpreterLocals, false, \ 2631 "Always clear local variables of interpreter activations upon " \ 2632 "entry") \ 2633 \ 2634 product_pd(bool, RewriteBytecodes, \ 2635 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2636 \ 2637 product_pd(bool, RewriteFrequentPairs, \ 2638 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2639 \ 2640 diagnostic(bool, PrintInterpreter, false, \ 2641 "Prints the generated interpreter code") \ 2642 \ 2643 product(bool, UseInterpreter, true, \ 2644 "Use interpreter for non-compiled methods") \ 2645 \ 2646 develop(bool, UseFastSignatureHandlers, true, \ 2647 "Use fast signature handlers for native calls") \ 2648 \ 2649 product(bool, UseLoopCounter, true, \ 2650 "Increment invocation counter on backward branch") \ 2651 \ 2652 product(bool, UseFastEmptyMethods, true, \ 2653 "Use fast method entry code for empty methods") \ 2654 \ 2655 product(bool, UseFastAccessorMethods, true, \ 2656 "Use fast method entry code for accessor methods") \ 2657 \ 2658 product_pd(bool, UseOnStackReplacement, \ 2659 "Use on stack replacement, calls runtime if invoc. counter " \ 2660 "overflows in loop") \ 2661 \ 2662 notproduct(bool, TraceOnStackReplacement, false, \ 2663 "Trace on stack replacement") \ 2664 \ 2665 product_pd(bool, PreferInterpreterNativeStubs, \ 2666 "Use always interpreter stubs for native methods invoked via " \ 2667 "interpreter") \ 2668 \ 2669 develop(bool, CountBytecodes, false, \ 2670 "Count number of bytecodes executed") \ 2671 \ 2672 develop(bool, PrintBytecodeHistogram, false, \ 2673 "Print histogram of the executed bytecodes") \ 2674 \ 2675 develop(bool, PrintBytecodePairHistogram, false, \ 2676 "Print histogram of the executed bytecode pairs") \ 2677 \ 2678 diagnostic(bool, PrintSignatureHandlers, false, \ 2679 "Print code generated for native method signature handlers") \ 2680 \ 2681 develop(bool, VerifyOops, false, \ 2682 "Do plausibility checks for oops") \ 2683 \ 2684 develop(bool, CheckUnhandledOops, false, \ 2685 "Check for unhandled oops in VM code") \ 2686 \ 2687 develop(bool, VerifyJNIFields, trueInDebug, \ 2688 "Verify jfieldIDs for instance fields") \ 2689 \ 2690 notproduct(bool, VerifyJNIEnvThread, false, \ 2691 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2692 "from JNI") \ 2693 \ 2694 develop(bool, VerifyFPU, false, \ 2695 "Verify FPU state (check for NaN's, etc.)") \ 2696 \ 2697 develop(bool, VerifyThread, false, \ 2698 "Watch the thread register for corruption (SPARC only)") \ 2699 \ 2700 develop(bool, VerifyActivationFrameSize, false, \ 2701 "Verify that activation frame didn't become smaller than its " \ 2702 "minimal size") \ 2703 \ 2704 develop(bool, TraceFrequencyInlining, false, \ 2705 "Trace frequency based inlining") \ 2706 \ 2707 develop_pd(bool, InlineIntrinsics, \ 2708 "Inline intrinsics that can be statically resolved") \ 2709 \ 2710 product_pd(bool, ProfileInterpreter, \ 2711 "Profile at the bytecode level during interpretation") \ 2712 \ 2713 develop_pd(bool, ProfileTraps, \ 2714 "Profile deoptimization traps at the bytecode level") \ 2715 \ 2716 product(intx, ProfileMaturityPercentage, 20, \ 2717 "number of method invocations/branches (expressed as % of " \ 2718 "CompileThreshold) before using the method's profile") \ 2719 \ 2720 develop(bool, PrintMethodData, false, \ 2721 "Print the results of +ProfileInterpreter at end of run") \ 2722 \ 2723 develop(bool, VerifyDataPointer, trueInDebug, \ 2724 "Verify the method data pointer during interpreter profiling") \ 2725 \ 2726 develop(bool, VerifyCompiledCode, false, \ 2727 "Include miscellaneous runtime verifications in nmethod code; " \ 2728 "default off because it disturbs nmethod size heuristics") \ 2729 \ 2730 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 2731 "Manually make GC thread crash then dump java stack trace; " \ 2732 "Test only") \ 2733 \ 2734 /* compilation */ \ 2735 product(bool, UseCompiler, true, \ 2736 "use compilation") \ 2737 \ 2738 develop(bool, TraceCompilationPolicy, false, \ 2739 "Trace compilation policy") \ 2740 \ 2741 develop(bool, TimeCompilationPolicy, false, \ 2742 "Time the compilation policy") \ 2743 \ 2744 product(bool, UseCounterDecay, true, \ 2745 "adjust recompilation counters") \ 2746 \ 2747 develop(intx, CounterHalfLifeTime, 30, \ 2748 "half-life time of invocation counters (in secs)") \ 2749 \ 2750 develop(intx, CounterDecayMinIntervalLength, 500, \ 2751 "Min. ms. between invocation of CounterDecay") \ 2752 \ 2753 product(bool, AlwaysCompileLoopMethods, false, \ 2754 "when using recompilation, never interpret methods " \ 2755 "containing loops") \ 2756 \ 2757 product(bool, DontCompileHugeMethods, true, \ 2758 "don't compile methods > HugeMethodLimit") \ 2759 \ 2760 /* Bytecode escape analysis estimation. */ \ 2761 product(bool, EstimateArgEscape, true, \ 2762 "Analyze bytecodes to estimate escape state of arguments") \ 2763 \ 2764 product(intx, BCEATraceLevel, 0, \ 2765 "How much tracing to do of bytecode escape analysis estimates") \ 2766 \ 2767 product(intx, MaxBCEAEstimateLevel, 5, \ 2768 "Maximum number of nested calls that are analyzed by BC EA.") \ 2769 \ 2770 product(intx, MaxBCEAEstimateSize, 150, \ 2771 "Maximum bytecode size of a method to be analyzed by BC EA.") \ 2772 \ 2773 product(intx, AllocatePrefetchStyle, 1, \ 2774 "0 = no prefetch, " \ 2775 "1 = prefetch instructions for each allocation, " \ 2776 "2 = use TLAB watermark to gate allocation prefetch, " \ 2777 "3 = use BIS instruction on Sparc for allocation prefetch") \ 2778 \ 2779 product(intx, AllocatePrefetchDistance, -1, \ 2780 "Distance to prefetch ahead of allocation pointer") \ 2781 \ 2782 product(intx, AllocatePrefetchLines, 3, \ 2783 "Number of lines to prefetch ahead of array allocation pointer") \ 2784 \ 2785 product(intx, AllocateInstancePrefetchLines, 1, \ 2786 "Number of lines to prefetch ahead of instance allocation pointer") \ 2787 \ 2788 product(intx, AllocatePrefetchStepSize, 16, \ 2789 "Step size in bytes of sequential prefetch instructions") \ 2790 \ 2791 product(intx, AllocatePrefetchInstr, 0, \ 2792 "Prefetch instruction to prefetch ahead of allocation pointer") \ 2793 \ 2794 /* deoptimization */ \ 2795 develop(bool, TraceDeoptimization, false, \ 2796 "Trace deoptimization") \ 2797 \ 2798 develop(bool, DebugDeoptimization, false, \ 2799 "Tracing various information while debugging deoptimization") \ 2800 \ 2801 product(intx, SelfDestructTimer, 0, \ 2802 "Will cause VM to terminate after a given time (in minutes) " \ 2803 "(0 means off)") \ 2804 \ 2805 product(intx, MaxJavaStackTraceDepth, 1024, \ 2806 "Max. no. of lines in the stack trace for Java exceptions " \ 2807 "(0 means all)") \ 2808 \ 2809 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 2810 "Guarantee a safepoint (at least) every so many milliseconds " \ 2811 "(0 means none)")) \ 2812 \ 2813 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ 2814 "Guarantee a safepoint (at least) every so many milliseconds " \ 2815 "(0 means none)")) \ 2816 \ 2817 product(intx, SafepointTimeoutDelay, 10000, \ 2818 "Delay in milliseconds for option SafepointTimeout") \ 2819 \ 2820 product(intx, NmethodSweepFraction, 16, \ 2821 "Number of invocations of sweeper to cover all nmethods") \ 2822 \ 2823 product(intx, NmethodSweepCheckInterval, 5, \ 2824 "Compilers wake up every n seconds to possibly sweep nmethods") \ 2825 \ 2826 notproduct(bool, LogSweeper, false, \ 2827 "Keep a ring buffer of sweeper activity") \ 2828 \ 2829 notproduct(intx, SweeperLogEntries, 1024, \ 2830 "Number of records in the ring buffer of sweeper activity") \ 2831 \ 2832 notproduct(intx, MemProfilingInterval, 500, \ 2833 "Time between each invocation of the MemProfiler") \ 2834 \ 2835 develop(intx, MallocCatchPtr, -1, \ 2836 "Hit breakpoint when mallocing/freeing this pointer") \ 2837 \ 2838 notproduct(intx, AssertRepeat, 1, \ 2839 "number of times to evaluate expression in assert " \ 2840 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ 2841 \ 2842 notproduct(ccstrlist, SuppressErrorAt, "", \ 2843 "List of assertions (file:line) to muzzle") \ 2844 \ 2845 notproduct(uintx, HandleAllocationLimit, 1024, \ 2846 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 2847 "is used") \ 2848 \ 2849 develop(uintx, TotalHandleAllocationLimit, 1024, \ 2850 "Threshold for total handle allocation when " \ 2851 "+TraceHandleAllocation is used") \ 2852 \ 2853 develop(intx, StackPrintLimit, 100, \ 2854 "number of stack frames to print in VM-level stack dump") \ 2855 \ 2856 notproduct(intx, MaxElementPrintSize, 256, \ 2857 "maximum number of elements to print") \ 2858 \ 2859 notproduct(intx, MaxSubklassPrintSize, 4, \ 2860 "maximum number of subklasses to print when printing klass") \ 2861 \ 2862 product(intx, MaxInlineLevel, 9, \ 2863 "maximum number of nested calls that are inlined") \ 2864 \ 2865 product(intx, MaxRecursiveInlineLevel, 1, \ 2866 "maximum number of nested recursive calls that are inlined") \ 2867 \ 2868 product_pd(intx, InlineSmallCode, \ 2869 "Only inline already compiled methods if their code size is " \ 2870 "less than this") \ 2871 \ 2872 product(intx, MaxInlineSize, 35, \ 2873 "maximum bytecode size of a method to be inlined") \ 2874 \ 2875 product_pd(intx, FreqInlineSize, \ 2876 "maximum bytecode size of a frequent method to be inlined") \ 2877 \ 2878 product(intx, MaxTrivialSize, 6, \ 2879 "maximum bytecode size of a trivial method to be inlined") \ 2880 \ 2881 product(intx, MinInliningThreshold, 250, \ 2882 "min. invocation count a method needs to have to be inlined") \ 2883 \ 2884 develop(intx, MethodHistogramCutoff, 100, \ 2885 "cutoff value for method invoc. histogram (+CountCalls)") \ 2886 \ 2887 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2888 "# of interpreted methods to show in profile") \ 2889 \ 2890 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 2891 "# of compiled methods to show in profile") \ 2892 \ 2893 develop(intx, ProfilerNumberOfStubMethods, 25, \ 2894 "# of stub methods to show in profile") \ 2895 \ 2896 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2897 "# of runtime stub nodes to show in profile") \ 2898 \ 2899 product(intx, ProfileIntervalsTicks, 100, \ 2900 "# of ticks between printing of interval profile " \ 2901 "(+ProfileIntervals)") \ 2902 \ 2903 notproduct(intx, ScavengeALotInterval, 1, \ 2904 "Interval between which scavenge will occur with +ScavengeALot") \ 2905 \ 2906 notproduct(intx, FullGCALotInterval, 1, \ 2907 "Interval between which full gc will occur with +FullGCALot") \ 2908 \ 2909 notproduct(intx, FullGCALotStart, 0, \ 2910 "For which invocation to start FullGCAlot") \ 2911 \ 2912 notproduct(intx, FullGCALotDummies, 32*K, \ 2913 "Dummy object allocated with +FullGCALot, forcing all objects " \ 2914 "to move") \ 2915 \ 2916 develop(intx, DontYieldALotInterval, 10, \ 2917 "Interval between which yields will be dropped (milliseconds)") \ 2918 \ 2919 develop(intx, MinSleepInterval, 1, \ 2920 "Minimum sleep() interval (milliseconds) when " \ 2921 "ConvertSleepToYield is off (used for SOLARIS)") \ 2922 \ 2923 develop(intx, ProfilerPCTickThreshold, 15, \ 2924 "Number of ticks in a PC buckets to be a hotspot") \ 2925 \ 2926 notproduct(intx, DeoptimizeALotInterval, 5, \ 2927 "Number of exits until DeoptimizeALot kicks in") \ 2928 \ 2929 notproduct(intx, ZombieALotInterval, 5, \ 2930 "Number of exits until ZombieALot kicks in") \ 2931 \ 2932 develop(bool, StressNonEntrant, false, \ 2933 "Mark nmethods non-entrant at registration") \ 2934 \ 2935 diagnostic(intx, MallocVerifyInterval, 0, \ 2936 "if non-zero, verify C heap after every N calls to " \ 2937 "malloc/realloc/free") \ 2938 \ 2939 diagnostic(intx, MallocVerifyStart, 0, \ 2940 "if non-zero, start verifying C heap after Nth call to " \ 2941 "malloc/realloc/free") \ 2942 \ 2943 diagnostic(uintx, MallocMaxTestWords, 0, \ 2944 "if non-zero, max # of Words that malloc/realloc can allocate " \ 2945 "(for testing only)") \ 2946 \ 2947 product(intx, TypeProfileWidth, 2, \ 2948 "number of receiver types to record in call/cast profile") \ 2949 \ 2950 develop(intx, BciProfileWidth, 2, \ 2951 "number of return bci's to record in ret profile") \ 2952 \ 2953 product(intx, PerMethodRecompilationCutoff, 400, \ 2954 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 2955 \ 2956 product(intx, PerBytecodeRecompilationCutoff, 200, \ 2957 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 2958 \ 2959 product(intx, PerMethodTrapLimit, 100, \ 2960 "Limit on traps (of one kind) in a method (includes inlines)") \ 2961 \ 2962 product(intx, PerBytecodeTrapLimit, 4, \ 2963 "Limit on traps (of one kind) at a particular BCI") \ 2964 \ 2965 develop(intx, InlineFrequencyRatio, 20, \ 2966 "Ratio of call site execution to caller method invocation") \ 2967 \ 2968 develop_pd(intx, InlineFrequencyCount, \ 2969 "Count of call site execution necessary to trigger frequent " \ 2970 "inlining") \ 2971 \ 2972 develop(intx, InlineThrowCount, 50, \ 2973 "Force inlining of interpreted methods that throw this often") \ 2974 \ 2975 develop(intx, InlineThrowMaxSize, 200, \ 2976 "Force inlining of throwing methods smaller than this") \ 2977 \ 2978 develop(intx, ProfilerNodeSize, 1024, \ 2979 "Size in K to allocate for the Profile Nodes of each thread") \ 2980 \ 2981 product_pd(intx, PreInflateSpin, \ 2982 "Number of times to spin wait before inflation") \ 2983 \ 2984 /* gc parameters */ \ 2985 product(uintx, InitialHeapSize, 0, \ 2986 "Initial heap size (in bytes); zero means use ergonomics") \ 2987 \ 2988 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ 2989 "Maximum heap size (in bytes)") \ 2990 \ 2991 product(uintx, OldSize, ScaleForWordSize(4*M), \ 2992 "Initial tenured generation size (in bytes)") \ 2993 \ 2994 product(uintx, NewSize, ScaleForWordSize(1*M), \ 2995 "Initial new generation size (in bytes)") \ 2996 \ 2997 product(uintx, MaxNewSize, max_uintx, \ 2998 "Maximum new generation size (in bytes), max_uintx means set " \ 2999 "ergonomically") \ 3000 \ 3001 product(uintx, PretenureSizeThreshold, 0, \ 3002 "Maximum size in bytes of objects allocated in DefNew " \ 3003 "generation; zero means no maximum") \ 3004 \ 3005 product(uintx, TLABSize, 0, \ 3006 "Starting TLAB size (in bytes); zero means set ergonomically") \ 3007 \ 3008 product(uintx, MinTLABSize, 2*K, \ 3009 "Minimum allowed TLAB size (in bytes)") \ 3010 \ 3011 product(uintx, TLABAllocationWeight, 35, \ 3012 "Allocation averaging weight") \ 3013 \ 3014 product(uintx, TLABWasteTargetPercent, 1, \ 3015 "Percentage of Eden that can be wasted") \ 3016 \ 3017 product(uintx, TLABRefillWasteFraction, 64, \ 3018 "Max TLAB waste at a refill (internal fragmentation)") \ 3019 \ 3020 product(uintx, TLABWasteIncrement, 4, \ 3021 "Increment allowed waste at slow allocation") \ 3022 \ 3023 product(uintx, SurvivorRatio, 8, \ 3024 "Ratio of eden/survivor space size") \ 3025 \ 3026 product(uintx, NewRatio, 2, \ 3027 "Ratio of new/old generation sizes") \ 3028 \ 3029 product_pd(uintx, NewSizeThreadIncrease, \ 3030 "Additional size added to desired new generation size per " \ 3031 "non-daemon thread (in bytes)") \ 3032 \ 3033 product_pd(uintx, MetaspaceSize, \ 3034 "Initial size of Metaspaces (in bytes)") \ 3035 \ 3036 product(uintx, MaxMetaspaceSize, max_uintx, \ 3037 "Maximum size of Metaspaces (in bytes)") \ 3038 \ 3039 product(uintx, ClassMetaspaceSize, 1*G, \ 3040 "Maximum size of InstanceKlass area in Metaspace used for " \ 3041 "UseCompressedKlassPointers") \ 3042 \ 3043 product(uintx, MinHeapFreeRatio, 40, \ 3044 "Min percentage of heap free after GC to avoid expansion") \ 3045 \ 3046 product(uintx, MaxHeapFreeRatio, 70, \ 3047 "Max percentage of heap free after GC to avoid shrinking") \ 3048 \ 3049 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 3050 "Number of milliseconds per MB of free space in the heap") \ 3051 \ 3052 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 3053 "Min change in heap space due to GC (in bytes)") \ 3054 \ 3055 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 3056 "Min expansion of Metaspace (in bytes)") \ 3057 \ 3058 product(uintx, MinMetaspaceFreeRatio, 40, \ 3059 "Min percentage of Metaspace free after GC to avoid expansion") \ 3060 \ 3061 product(uintx, MaxMetaspaceFreeRatio, 70, \ 3062 "Max percentage of Metaspace free after GC to avoid shrinking") \ 3063 \ 3064 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3065 "Max expansion of Metaspace without full GC (in bytes)") \ 3066 \ 3067 product(uintx, QueuedAllocationWarningCount, 0, \ 3068 "Number of times an allocation that queues behind a GC " \ 3069 "will retry before printing a warning") \ 3070 \ 3071 diagnostic(uintx, VerifyGCStartAt, 0, \ 3072 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3073 \ 3074 diagnostic(intx, VerifyGCLevel, 0, \ 3075 "Generation level at which to start +VerifyBefore/AfterGC") \ 3076 \ 3077 product(uintx, MaxTenuringThreshold, 15, \ 3078 "Maximum value for tenuring threshold") \ 3079 \ 3080 product(uintx, InitialTenuringThreshold, 7, \ 3081 "Initial value for tenuring threshold") \ 3082 \ 3083 product(uintx, TargetSurvivorRatio, 50, \ 3084 "Desired percentage of survivor space used after scavenge") \ 3085 \ 3086 product(uintx, MarkSweepDeadRatio, 5, \ 3087 "Percentage (0-100) of the old gen allowed as dead wood." \ 3088 "Serial mark sweep treats this as both the min and max value." \ 3089 "CMS uses this value only if it falls back to mark sweep." \ 3090 "Par compact uses a variable scale based on the density of the" \ 3091 "generation and treats this as the max value when the heap is" \ 3092 "either completely full or completely empty. Par compact also" \ 3093 "has a smaller default value; see arguments.cpp.") \ 3094 \ 3095 product(uintx, MarkSweepAlwaysCompactCount, 4, \ 3096 "How often should we fully compact the heap (ignoring the dead " \ 3097 "space parameters)") \ 3098 \ 3099 product(intx, PrintCMSStatistics, 0, \ 3100 "Statistics for CMS") \ 3101 \ 3102 product(bool, PrintCMSInitiationStatistics, false, \ 3103 "Statistics for initiating a CMS collection") \ 3104 \ 3105 product(intx, PrintFLSStatistics, 0, \ 3106 "Statistics for CMS' FreeListSpace") \ 3107 \ 3108 product(intx, PrintFLSCensus, 0, \ 3109 "Census for CMS' FreeListSpace") \ 3110 \ 3111 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 3112 "Delay in ms between expansion and allocation") \ 3113 \ 3114 develop(uintx, GCWorkerDelayMillis, 0, \ 3115 "Delay in ms in scheduling GC workers") \ 3116 \ 3117 product(intx, DeferThrSuspendLoopCount, 4000, \ 3118 "(Unstable) Number of times to iterate in safepoint loop " \ 3119 " before blocking VM threads ") \ 3120 \ 3121 product(intx, DeferPollingPageLoopCount, -1, \ 3122 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 3123 "before changing safepoint polling page to RO ") \ 3124 \ 3125 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 3126 \ 3127 product(bool, PSChunkLargeArrays, true, \ 3128 "true: process large arrays in chunks") \ 3129 \ 3130 product(uintx, GCDrainStackTargetSize, 64, \ 3131 "how many entries we'll try to leave on the stack during " \ 3132 "parallel GC") \ 3133 \ 3134 /* stack parameters */ \ 3135 product_pd(intx, StackYellowPages, \ 3136 "Number of yellow zone (recoverable overflows) pages") \ 3137 \ 3138 product_pd(intx, StackRedPages, \ 3139 "Number of red zone (unrecoverable overflows) pages") \ 3140 \ 3141 product_pd(intx, StackShadowPages, \ 3142 "Number of shadow zone (for overflow checking) pages" \ 3143 " this should exceed the depth of the VM and native call stack") \ 3144 \ 3145 product_pd(intx, ThreadStackSize, \ 3146 "Thread Stack Size (in Kbytes)") \ 3147 \ 3148 product_pd(intx, VMThreadStackSize, \ 3149 "Non-Java Thread Stack Size (in Kbytes)") \ 3150 \ 3151 product_pd(intx, CompilerThreadStackSize, \ 3152 "Compiler Thread Stack Size (in Kbytes)") \ 3153 \ 3154 develop_pd(uintx, JVMInvokeMethodSlack, \ 3155 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 3156 \ 3157 product(uintx, ThreadSafetyMargin, 50*M, \ 3158 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ 3159 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ 3160 "disable this feature") \ 3161 \ 3162 /* code cache parameters */ \ 3163 develop(uintx, CodeCacheSegmentSize, 64, \ 3164 "Code cache segment size (in bytes) - smallest unit of " \ 3165 "allocation") \ 3166 \ 3167 develop_pd(intx, CodeEntryAlignment, \ 3168 "Code entry alignment for generated code (in bytes)") \ 3169 \ 3170 product_pd(intx, OptoLoopAlignment, \ 3171 "Align inner loops to zero relative to this modulus") \ 3172 \ 3173 product_pd(uintx, InitialCodeCacheSize, \ 3174 "Initial code cache size (in bytes)") \ 3175 \ 3176 develop_pd(uintx, CodeCacheMinimumUseSpace, \ 3177 "Minimum code cache size (in bytes) required to start VM.") \ 3178 \ 3179 product_pd(uintx, ReservedCodeCacheSize, \ 3180 "Reserved code cache size (in bytes) - maximum code cache size") \ 3181 \ 3182 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ 3183 "When less than X space left, we stop compiling.") \ 3184 \ 3185 product_pd(uintx, CodeCacheExpansionSize, \ 3186 "Code cache expansion size (in bytes)") \ 3187 \ 3188 develop_pd(uintx, CodeCacheMinBlockLength, \ 3189 "Minimum number of segments in a code cache block.") \ 3190 \ 3191 notproduct(bool, ExitOnFullCodeCache, false, \ 3192 "Exit the VM if we fill the code cache.") \ 3193 \ 3194 product(bool, UseCodeCacheFlushing, true, \ 3195 "Attempt to clean the code cache before shutting off compiler") \ 3196 \ 3197 product(intx, MinCodeCacheFlushingInterval, 30, \ 3198 "Min number of seconds between code cache cleaning sessions") \ 3199 \ 3200 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ 3201 "When less than X space left, start code cache cleaning") \ 3202 \ 3203 product(uintx, CodeCacheFlushingFraction, 2, \ 3204 "Fraction of the code cache that is flushed when full") \ 3205 \ 3206 /* interpreter debugging */ \ 3207 develop(intx, BinarySwitchThreshold, 5, \ 3208 "Minimal number of lookupswitch entries for rewriting to binary " \ 3209 "switch") \ 3210 \ 3211 develop(intx, StopInterpreterAt, 0, \ 3212 "Stops interpreter execution at specified bytecode number") \ 3213 \ 3214 develop(intx, TraceBytecodesAt, 0, \ 3215 "Traces bytecodes starting with specified bytecode number") \ 3216 \ 3217 /* compiler interface */ \ 3218 develop(intx, CIStart, 0, \ 3219 "the id of the first compilation to permit") \ 3220 \ 3221 develop(intx, CIStop, -1, \ 3222 "the id of the last compilation to permit") \ 3223 \ 3224 develop(intx, CIStartOSR, 0, \ 3225 "the id of the first osr compilation to permit " \ 3226 "(CICountOSR must be on)") \ 3227 \ 3228 develop(intx, CIStopOSR, -1, \ 3229 "the id of the last osr compilation to permit " \ 3230 "(CICountOSR must be on)") \ 3231 \ 3232 develop(intx, CIBreakAtOSR, -1, \ 3233 "id of osr compilation to break at") \ 3234 \ 3235 develop(intx, CIBreakAt, -1, \ 3236 "id of compilation to break at") \ 3237 \ 3238 product(ccstrlist, CompileOnly, "", \ 3239 "List of methods (pkg/class.name) to restrict compilation to") \ 3240 \ 3241 product(ccstr, CompileCommandFile, NULL, \ 3242 "Read compiler commands from this file [.hotspot_compiler]") \ 3243 \ 3244 product(ccstrlist, CompileCommand, "", \ 3245 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3246 \ 3247 develop(bool, ReplayCompiles, false, \ 3248 "Enable replay of compilations from ReplayDataFile") \ 3249 \ 3250 product(ccstr, ReplayDataFile, NULL, \ 3251 "File containing compilation replay information" \ 3252 "[default: ./replay_pid%p.log] (%p replaced with pid)") \ 3253 \ 3254 develop(intx, ReplaySuppressInitializers, 2, \ 3255 "Controls handling of class initialization during replay" \ 3256 "0 - don't do anything special" \ 3257 "1 - treat all class initializers as empty" \ 3258 "2 - treat class initializers for application classes as empty" \ 3259 "3 - allow all class initializers to run during bootstrap but" \ 3260 " pretend they are empty after starting replay") \ 3261 \ 3262 develop(bool, ReplayIgnoreInitErrors, false, \ 3263 "Ignore exceptions thrown during initialization for replay") \ 3264 \ 3265 product(bool, DumpReplayDataOnError, true, \ 3266 "Record replay data for crashing compiler threads") \ 3267 \ 3268 product(bool, CICompilerCountPerCPU, false, \ 3269 "1 compiler thread for log(N CPUs)") \ 3270 \ 3271 develop(intx, CIFireOOMAt, -1, \ 3272 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3273 "(non-negative value throws OOM after this many CI accesses " \ 3274 "in each compile)") \ 3275 notproduct(intx, CICrashAt, -1, \ 3276 "id of compilation to trigger assert in compiler thread for " \ 3277 "the purpose of testing, e.g. generation of replay data") \ 3278 notproduct(bool, CIObjectFactoryVerify, false, \ 3279 "enable potentially expensive verification in ciObjectFactory") \ 3280 \ 3281 /* Priorities */ \ 3282 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3283 \ 3284 product(intx, ThreadPriorityPolicy, 0, \ 3285 "0 : Normal. "\ 3286 " VM chooses priorities that are appropriate for normal "\ 3287 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3288 " to normal native priority. Java priorities below NORM_PRIORITY"\ 3289 " map to lower native priority values. On Windows applications"\ 3290 " are allowed to use higher native priorities. However, with "\ 3291 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ 3292 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ 3293 " interfere with system threads. On Linux thread priorities "\ 3294 " are ignored because the OS does not support static priority "\ 3295 " in SCHED_OTHER scheduling class which is the only choice for"\ 3296 " non-root, non-realtime applications. "\ 3297 "1 : Aggressive. "\ 3298 " Java thread priorities map over to the entire range of "\ 3299 " native thread priorities. Higher Java thread priorities map "\ 3300 " to higher native thread priorities. This policy should be "\ 3301 " used with care, as sometimes it can cause performance "\ 3302 " degradation in the application and/or the entire system. On "\ 3303 " Linux this policy requires root privilege.") \ 3304 \ 3305 product(bool, ThreadPriorityVerbose, false, \ 3306 "Print priority changes") \ 3307 \ 3308 product(intx, DefaultThreadPriority, -1, \ 3309 "The native priority at which threads run if not elsewhere " \ 3310 "specified (-1 means no change)") \ 3311 \ 3312 product(intx, CompilerThreadPriority, -1, \ 3313 "The native priority at which compiler threads should run " \ 3314 "(-1 means no change)") \ 3315 \ 3316 product(intx, VMThreadPriority, -1, \ 3317 "The native priority at which the VM thread should run " \ 3318 "(-1 means no change)") \ 3319 \ 3320 product(bool, CompilerThreadHintNoPreempt, true, \ 3321 "(Solaris only) Give compiler threads an extra quanta") \ 3322 \ 3323 product(bool, VMThreadHintNoPreempt, false, \ 3324 "(Solaris only) Give VM thread an extra quanta") \ 3325 \ 3326 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3327 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3328 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3329 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3330 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3331 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3332 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3333 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3334 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3335 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ 3336 \ 3337 experimental(bool, UseCriticalJavaThreadPriority, false, \ 3338 "Java thread priority 10 maps to critical scheduling priority") \ 3339 \ 3340 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 3341 "Compiler thread(s) run at critical scheduling priority") \ 3342 \ 3343 experimental(bool, UseCriticalCMSThreadPriority, false, \ 3344 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 3345 \ 3346 /* compiler debugging */ \ 3347 notproduct(intx, CompileTheWorldStartAt, 1, \ 3348 "First class to consider when using +CompileTheWorld") \ 3349 \ 3350 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3351 "Last class to consider when using +CompileTheWorld") \ 3352 \ 3353 develop(intx, NewCodeParameter, 0, \ 3354 "Testing Only: Create a dedicated integer parameter before " \ 3355 "putback") \ 3356 \ 3357 /* new oopmap storage allocation */ \ 3358 develop(intx, MinOopMapAllocation, 8, \ 3359 "Minimum number of OopMap entries in an OopMapSet") \ 3360 \ 3361 /* Background Compilation */ \ 3362 develop(intx, LongCompileThreshold, 50, \ 3363 "Used with +TraceLongCompiles") \ 3364 \ 3365 product(intx, StarvationMonitorInterval, 200, \ 3366 "Pause between each check in ms") \ 3367 \ 3368 /* recompilation */ \ 3369 product_pd(intx, CompileThreshold, \ 3370 "number of interpreted method invocations before (re-)compiling") \ 3371 \ 3372 product_pd(intx, BackEdgeThreshold, \ 3373 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ 3374 \ 3375 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 3376 "Interpreter (tier 0) invocation notification frequency.") \ 3377 \ 3378 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 3379 "C1 without MDO (tier 2) invocation notification frequency.") \ 3380 \ 3381 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 3382 "C1 with MDO profiling (tier 3) invocation notification " \ 3383 "frequency.") \ 3384 \ 3385 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 3386 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 3387 \ 3388 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 3389 "Interpreter (tier 0) invocation notification frequency.") \ 3390 \ 3391 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 3392 "C1 without MDO (tier 2) invocation notification frequency.") \ 3393 \ 3394 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 3395 "C1 with MDO profiling (tier 3) invocation notification " \ 3396 "frequency.") \ 3397 \ 3398 product(intx, Tier2CompileThreshold, 0, \ 3399 "threshold at which tier 2 compilation is invoked") \ 3400 \ 3401 product(intx, Tier2BackEdgeThreshold, 0, \ 3402 "Back edge threshold at which tier 2 compilation is invoked") \ 3403 \ 3404 product(intx, Tier3InvocationThreshold, 200, \ 3405 "Compile if number of method invocations crosses this " \ 3406 "threshold") \ 3407 \ 3408 product(intx, Tier3MinInvocationThreshold, 100, \ 3409 "Minimum invocation to compile at tier 3") \ 3410 \ 3411 product(intx, Tier3CompileThreshold, 2000, \ 3412 "Threshold at which tier 3 compilation is invoked (invocation " \ 3413 "minimum must be satisfied.") \ 3414 \ 3415 product(intx, Tier3BackEdgeThreshold, 60000, \ 3416 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 3417 \ 3418 product(intx, Tier4InvocationThreshold, 5000, \ 3419 "Compile if number of method invocations crosses this " \ 3420 "threshold") \ 3421 \ 3422 product(intx, Tier4MinInvocationThreshold, 600, \ 3423 "Minimum invocation to compile at tier 4") \ 3424 \ 3425 product(intx, Tier4CompileThreshold, 15000, \ 3426 "Threshold at which tier 4 compilation is invoked (invocation " \ 3427 "minimum must be satisfied.") \ 3428 \ 3429 product(intx, Tier4BackEdgeThreshold, 40000, \ 3430 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 3431 \ 3432 product(intx, Tier3DelayOn, 5, \ 3433 "If C2 queue size grows over this amount per compiler thread " \ 3434 "stop compiling at tier 3 and start compiling at tier 2") \ 3435 \ 3436 product(intx, Tier3DelayOff, 2, \ 3437 "If C2 queue size is less than this amount per compiler thread " \ 3438 "allow methods compiled at tier 2 transition to tier 3") \ 3439 \ 3440 product(intx, Tier3LoadFeedback, 5, \ 3441 "Tier 3 thresholds will increase twofold when C1 queue size " \ 3442 "reaches this amount per compiler thread") \ 3443 \ 3444 product(intx, Tier4LoadFeedback, 3, \ 3445 "Tier 4 thresholds will increase twofold when C2 queue size " \ 3446 "reaches this amount per compiler thread") \ 3447 \ 3448 product(intx, TieredCompileTaskTimeout, 50, \ 3449 "Kill compile task if method was not used within " \ 3450 "given timeout in milliseconds") \ 3451 \ 3452 product(intx, TieredStopAtLevel, 4, \ 3453 "Stop at given compilation level") \ 3454 \ 3455 product(intx, Tier0ProfilingStartPercentage, 200, \ 3456 "Start profiling in interpreter if the counters exceed tier 3" \ 3457 "thresholds by the specified percentage") \ 3458 \ 3459 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ 3460 "Increase the compile threshold for C1 compilation if the code" \ 3461 "cache is filled by the specified percentage.") \ 3462 \ 3463 product(intx, TieredRateUpdateMinTime, 1, \ 3464 "Minimum rate sampling interval (in milliseconds)") \ 3465 \ 3466 product(intx, TieredRateUpdateMaxTime, 25, \ 3467 "Maximum rate sampling interval (in milliseconds)") \ 3468 \ 3469 product_pd(bool, TieredCompilation, \ 3470 "Enable tiered compilation") \ 3471 \ 3472 product(bool, PrintTieredEvents, false, \ 3473 "Print tiered events notifications") \ 3474 \ 3475 product_pd(intx, OnStackReplacePercentage, \ 3476 "NON_TIERED number of method invocations/branches (expressed as %"\ 3477 "of CompileThreshold) before (re-)compiling OSR code") \ 3478 \ 3479 product(intx, InterpreterProfilePercentage, 33, \ 3480 "NON_TIERED number of method invocations/branches (expressed as %"\ 3481 "of CompileThreshold) before profiling in the interpreter") \ 3482 \ 3483 develop(intx, MaxRecompilationSearchLength, 10, \ 3484 "max. # frames to inspect searching for recompilee") \ 3485 \ 3486 develop(intx, MaxInterpretedSearchLength, 3, \ 3487 "max. # interp. frames to skip when searching for recompilee") \ 3488 \ 3489 develop(intx, DesiredMethodLimit, 8000, \ 3490 "desired max. method size (in bytecodes) after inlining") \ 3491 \ 3492 develop(intx, HugeMethodLimit, 8000, \ 3493 "don't compile methods larger than this if " \ 3494 "+DontCompileHugeMethods") \ 3495 \ 3496 /* New JDK 1.4 reflection implementation */ \ 3497 \ 3498 develop(bool, UseNewReflection, true, \ 3499 "Temporary flag for transition to reflection based on dynamic " \ 3500 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ 3501 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ 3502 "changes were needed") \ 3503 \ 3504 develop(bool, VerifyReflectionBytecodes, false, \ 3505 "Force verification of 1.4 reflection bytecodes. Does not work " \ 3506 "in situations like that described in 4486457 or for " \ 3507 "constructors generated for serialization, so can not be enabled "\ 3508 "in product.") \ 3509 \ 3510 product(bool, ReflectionWrapResolutionErrors, true, \ 3511 "Temporary flag for transition to AbstractMethodError wrapped " \ 3512 "in InvocationTargetException. See 6531596") \ 3513 \ 3514 \ 3515 develop(intx, FastSuperclassLimit, 8, \ 3516 "Depth of hardwired instanceof accelerator array") \ 3517 \ 3518 /* Properties for Java libraries */ \ 3519 \ 3520 product(uintx, MaxDirectMemorySize, 0, \ 3521 "Maximum total size of NIO direct-buffer allocations") \ 3522 \ 3523 /* temporary developer defined flags */ \ 3524 \ 3525 diagnostic(bool, UseNewCode, false, \ 3526 "Testing Only: Use the new version while testing") \ 3527 \ 3528 diagnostic(bool, UseNewCode2, false, \ 3529 "Testing Only: Use the new version while testing") \ 3530 \ 3531 diagnostic(bool, UseNewCode3, false, \ 3532 "Testing Only: Use the new version while testing") \ 3533 \ 3534 /* flags for performance data collection */ \ 3535 \ 3536 product(bool, UsePerfData, falseInEmbedded, \ 3537 "Flag to disable jvmstat instrumentation for performance testing" \ 3538 "and problem isolation purposes.") \ 3539 \ 3540 product(bool, PerfDataSaveToFile, false, \ 3541 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3542 \ 3543 product(ccstr, PerfDataSaveFile, NULL, \ 3544 "Save PerfData memory to the specified absolute pathname," \ 3545 "%p in the file name if present will be replaced by pid") \ 3546 \ 3547 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ 3548 "Data sampling interval in milliseconds") \ 3549 \ 3550 develop(bool, PerfTraceDataCreation, false, \ 3551 "Trace creation of Performance Data Entries") \ 3552 \ 3553 develop(bool, PerfTraceMemOps, false, \ 3554 "Trace PerfMemory create/attach/detach calls") \ 3555 \ 3556 product(bool, PerfDisableSharedMem, false, \ 3557 "Store performance data in standard memory") \ 3558 \ 3559 product(intx, PerfDataMemorySize, 32*K, \ 3560 "Size of performance data memory region. Will be rounded " \ 3561 "up to a multiple of the native os page size.") \ 3562 \ 3563 product(intx, PerfMaxStringConstLength, 1024, \ 3564 "Maximum PerfStringConstant string length before truncation") \ 3565 \ 3566 product(bool, PerfAllowAtExitRegistration, false, \ 3567 "Allow registration of atexit() methods") \ 3568 \ 3569 product(bool, PerfBypassFileSystemCheck, false, \ 3570 "Bypass Win32 file system criteria checks (Windows Only)") \ 3571 \ 3572 product(intx, UnguardOnExecutionViolation, 0, \ 3573 "Unguard page and retry on no-execute fault (Win32 only)" \ 3574 "0=off, 1=conservative, 2=aggressive") \ 3575 \ 3576 /* Serviceability Support */ \ 3577 \ 3578 product(bool, ManagementServer, false, \ 3579 "Create JMX Management Server") \ 3580 \ 3581 product(bool, DisableAttachMechanism, false, \ 3582 "Disable mechanism that allows tools to attach to this VM") \ 3583 \ 3584 product(bool, StartAttachListener, false, \ 3585 "Always start Attach Listener at VM startup") \ 3586 \ 3587 manageable(bool, PrintConcurrentLocks, false, \ 3588 "Print java.util.concurrent locks in thread dump") \ 3589 \ 3590 product(bool, TransmitErrorReport, false, \ 3591 "Enable error report transmission on erroneous termination") \ 3592 \ 3593 product(ccstr, ErrorReportServer, NULL, \ 3594 "Override built-in error report server address") \ 3595 \ 3596 /* Shared spaces */ \ 3597 \ 3598 product(bool, UseSharedSpaces, true, \ 3599 "Use shared spaces for metadata") \ 3600 \ 3601 product(bool, RequireSharedSpaces, false, \ 3602 "Require shared spaces for metadata") \ 3603 \ 3604 product(bool, DumpSharedSpaces, false, \ 3605 "Special mode: JVM reads a class list, loads classes, builds " \ 3606 "shared spaces, and dumps the shared spaces to a file to be " \ 3607 "used in future JVM runs.") \ 3608 \ 3609 product(bool, PrintSharedSpaces, false, \ 3610 "Print usage of shared spaces") \ 3611 \ 3612 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3613 "Size of read-write space for metadata (in bytes)") \ 3614 \ 3615 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3616 "Size of read-only space for metadata (in bytes)") \ 3617 \ 3618 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ 3619 "Size of the shared miscellaneous data area (in bytes)") \ 3620 \ 3621 product(uintx, SharedMiscCodeSize, 120*K, \ 3622 "Size of the shared miscellaneous code area (in bytes)") \ 3623 \ 3624 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \ 3625 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ 3626 "Address to allocate shared memory region for class data") \ 3627 \ 3628 diagnostic(bool, EnableInvokeDynamic, true, \ 3629 "support JSR 292 (method handles, invokedynamic, " \ 3630 "anonymous classes") \ 3631 \ 3632 diagnostic(bool, PrintMethodHandleStubs, false, \ 3633 "Print generated stub code for method handles") \ 3634 \ 3635 develop(bool, TraceMethodHandles, false, \ 3636 "trace internal method handle operations") \ 3637 \ 3638 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 3639 "perform extra checks when constructing method handles") \ 3640 \ 3641 diagnostic(bool, ShowHiddenFrames, false, \ 3642 "show method handle implementation frames (usually hidden)") \ 3643 \ 3644 experimental(bool, TrustFinalNonStaticFields, false, \ 3645 "trust final non-static declarations for constant folding") \ 3646 \ 3647 develop(bool, TraceInvokeDynamic, false, \ 3648 "trace internal invoke dynamic operations") \ 3649 \ 3650 diagnostic(bool, PauseAtStartup, false, \ 3651 "Causes the VM to pause at startup time and wait for the pause " \ 3652 "file to be removed (default: ./vm.paused.<pid>)") \ 3653 \ 3654 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3655 "The file to create and for whose removal to await when pausing " \ 3656 "at startup. (default: ./vm.paused.<pid>)") \ 3657 \ 3658 diagnostic(bool, PauseAtExit, false, \ 3659 "Pause and wait for keypress on exit if a debugger is attached") \ 3660 \ 3661 product(bool, ExtendedDTraceProbes, false, \ 3662 "Enable performance-impacting dtrace probes") \ 3663 \ 3664 product(bool, DTraceMethodProbes, false, \ 3665 "Enable dtrace probes for method-entry and method-exit") \ 3666 \ 3667 product(bool, DTraceAllocProbes, false, \ 3668 "Enable dtrace probes for object allocation") \ 3669 \ 3670 product(bool, DTraceMonitorProbes, false, \ 3671 "Enable dtrace probes for monitor events") \ 3672 \ 3673 product(bool, RelaxAccessControlCheck, false, \ 3674 "Relax the access control checks in the verifier") \ 3675 \ 3676 diagnostic(bool, PrintDTraceDOF, false, \ 3677 "Print the DTrace DOF passed to the system for JSDT probes") \ 3678 \ 3679 product(uintx, StringTableSize, defaultStringTableSize, \ 3680 "Number of buckets in the interned String table") \ 3681 \ 3682 develop(bool, TraceDefaultMethods, false, \ 3683 "Trace the default method processing steps") \ 3684 \ 3685 develop(bool, VerifyGenericSignatures, false, \ 3686 "Abort VM on erroneous or inconsistent generic signatures") \ 3687 \ 3688 product(bool, UseVMInterruptibleIO, false, \ 3689 "(Unstable, Solaris-specific) Thread interrupt before or with " \ 3690 "EINTR for I/O operations results in OS_INTRPT. The default value"\ 3691 " of this flag is true for JDK 6 and earlier") \ 3692 \ 3693 diagnostic(bool, WhiteBoxAPI, false, \ 3694 "Enable internal testing APIs") \ 3695 \ 3696 product(bool, PrintGCCause, true, \ 3697 "Include GC cause in GC logging") \ 3698 \ 3699 product(bool , AllowNonVirtualCalls, false, \ 3700 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \ 3701 \ 3702 diagnostic(ccstr, SharedArchiveFile, NULL, \ 3703 "Override the default location of the CDS archive file") \ 3704 \ 3705 experimental(uintx, ArrayAllocatorMallocLimit, \ 3706 SOLARIS_ONLY(64*K) NOT_SOLARIS(max_uintx), \ 3707 "Allocation less than this value will be allocated " \ 3708 "using malloc. Larger allocations will use mmap.") \ 3709 \ 3710 product(bool, EnableTracing, false, \ 3711 "Enable event-based tracing") \ 3712 product(bool, UseLockedTracing, false, \ 3713 "Use locked-tracing when doing event-based tracing") 3714 3715 3716/* 3717 * Macros for factoring of globals 3718 */ 3719 3720// Interface macros 3721#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3722#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 3723#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 3724#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 3725#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 3726#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 3727#ifdef PRODUCT 3728#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 3729#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 3730#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) 3731#else 3732#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 3733#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 3734#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3735#endif 3736// Special LP64 flags, product only needed for now. 3737#ifdef _LP64 3738#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3739#else 3740#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 3741#endif // _LP64 3742 3743// Implementation macros 3744#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 3745#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 3746#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 3747#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 3748#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 3749#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 3750#ifdef PRODUCT 3751#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ 3752#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ 3753#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 3754#else 3755#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 3756#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 3757#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 3758#endif 3759#ifdef _LP64 3760#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 3761#else 3762#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 3763#endif // _LP64 3764 3765RUNTIME_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) 3766 3767RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) 3768 3769ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) 3770 3771// Extensions 3772 3773#include "runtime/globals_ext.hpp" 3774 3775#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 3776