globals.hpp revision 3968:1f6d10b4cc0c
118334Speter/* 218334Speter * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 318334Speter * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 490075Sobrien * 590075Sobrien * This code is free software; you can redistribute it and/or modify it 618334Speter * under the terms of the GNU General Public License version 2 only, as 790075Sobrien * published by the Free Software Foundation. 818334Speter * 990075Sobrien * This code is distributed in the hope that it will be useful, but WITHOUT 1090075Sobrien * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1190075Sobrien * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1290075Sobrien * version 2 for more details (a copy is included in the LICENSE file that 1318334Speter * accompanied this code). 1490075Sobrien * 1590075Sobrien * You should have received a copy of the GNU General Public License version 1690075Sobrien * 2 along with this work; if not, write to the Free Software Foundation, 1790075Sobrien * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1818334Speter * 1918334Speter * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2090075Sobrien * or visit www.oracle.com if you need additional information or have any 2190075Sobrien * questions. 2290075Sobrien * 2318334Speter */ 2418334Speter 2518334Speter#ifndef SHARE_VM_RUNTIME_GLOBALS_HPP 2650397Sobrien#define SHARE_VM_RUNTIME_GLOBALS_HPP 2718334Speter 2818334Speter#include "utilities/debug.hpp" 2990075Sobrien 3090075Sobrien// use this for flags that are true per default in the tiered build 3118334Speter// but false in non-tiered builds, and vice versa 3218334Speter#ifdef TIERED 3318334Speter#define trueInTiered true 3418334Speter#define falseInTiered false 3518334Speter#else 3690075Sobrien#define trueInTiered false 3790075Sobrien#define falseInTiered true 3818334Speter#endif 3918334Speter 4018334Speter#ifdef TARGET_ARCH_x86 4118334Speter# include "globals_x86.hpp" 4290075Sobrien#endif 4390075Sobrien#ifdef TARGET_ARCH_sparc 4450397Sobrien# include "globals_sparc.hpp" 4590075Sobrien#endif 4690075Sobrien#ifdef TARGET_ARCH_zero 4790075Sobrien# include "globals_zero.hpp" 4890075Sobrien#endif 4990075Sobrien#ifdef TARGET_ARCH_arm 5050397Sobrien# include "globals_arm.hpp" 5118334Speter#endif 5250397Sobrien#ifdef TARGET_ARCH_ppc 5390075Sobrien# include "globals_ppc.hpp" 5490075Sobrien#endif 5518334Speter#ifdef TARGET_OS_FAMILY_linux 5618334Speter# include "globals_linux.hpp" 5790075Sobrien#endif 5890075Sobrien#ifdef TARGET_OS_FAMILY_solaris 5990075Sobrien# include "globals_solaris.hpp" 6090075Sobrien#endif 6118334Speter#ifdef TARGET_OS_FAMILY_windows 6290075Sobrien# include "globals_windows.hpp" 6390075Sobrien#endif 6418334Speter#ifdef TARGET_OS_FAMILY_bsd 6590075Sobrien# include "globals_bsd.hpp" 6618334Speter#endif 6790075Sobrien#ifdef TARGET_OS_ARCH_linux_x86 6890075Sobrien# include "globals_linux_x86.hpp" 6990075Sobrien#endif 7090075Sobrien#ifdef TARGET_OS_ARCH_linux_sparc 7190075Sobrien# include "globals_linux_sparc.hpp" 7290075Sobrien#endif 7390075Sobrien#ifdef TARGET_OS_ARCH_linux_zero 7418334Speter# include "globals_linux_zero.hpp" 7590075Sobrien#endif 7690075Sobrien#ifdef TARGET_OS_ARCH_solaris_x86 7790075Sobrien# include "globals_solaris_x86.hpp" 7818334Speter#endif 7990075Sobrien#ifdef TARGET_OS_ARCH_solaris_sparc 8090075Sobrien# include "globals_solaris_sparc.hpp" 8190075Sobrien#endif 8218334Speter#ifdef TARGET_OS_ARCH_windows_x86 8318334Speter# include "globals_windows_x86.hpp" 8490075Sobrien#endif 8518334Speter#ifdef TARGET_OS_ARCH_linux_arm 8690075Sobrien# include "globals_linux_arm.hpp" 8790075Sobrien#endif 8890075Sobrien#ifdef TARGET_OS_ARCH_linux_ppc 8990075Sobrien# include "globals_linux_ppc.hpp" 9090075Sobrien#endif 9190075Sobrien#ifdef TARGET_OS_ARCH_bsd_x86 9290075Sobrien# include "globals_bsd_x86.hpp" 9390075Sobrien#endif 9490075Sobrien#ifdef TARGET_OS_ARCH_bsd_zero 9590075Sobrien# include "globals_bsd_zero.hpp" 9690075Sobrien#endif 9790075Sobrien#ifdef COMPILER1 9890075Sobrien#ifdef TARGET_ARCH_x86 9918334Speter# include "c1_globals_x86.hpp" 10018334Speter#endif 10190075Sobrien#ifdef TARGET_ARCH_sparc 10290075Sobrien# include "c1_globals_sparc.hpp" 10390075Sobrien#endif 10490075Sobrien#ifdef TARGET_ARCH_arm 10590075Sobrien# include "c1_globals_arm.hpp" 10690075Sobrien#endif 10790075Sobrien#ifdef TARGET_ARCH_ppc 10890075Sobrien# include "c1_globals_ppc.hpp" 10990075Sobrien#endif 11090075Sobrien#ifdef TARGET_OS_FAMILY_linux 11190075Sobrien# include "c1_globals_linux.hpp" 11290075Sobrien#endif 11390075Sobrien#ifdef TARGET_OS_FAMILY_solaris 11490075Sobrien# include "c1_globals_solaris.hpp" 11590075Sobrien#endif 11690075Sobrien#ifdef TARGET_OS_FAMILY_windows 11790075Sobrien# include "c1_globals_windows.hpp" 11890075Sobrien#endif 11990075Sobrien#ifdef TARGET_OS_FAMILY_bsd 12090075Sobrien# include "c1_globals_bsd.hpp" 12190075Sobrien#endif 12290075Sobrien#endif 12390075Sobrien#ifdef COMPILER2 12490075Sobrien#ifdef TARGET_ARCH_x86 12590075Sobrien# include "c2_globals_x86.hpp" 12690075Sobrien#endif 12790075Sobrien#ifdef TARGET_ARCH_sparc 12890075Sobrien# include "c2_globals_sparc.hpp" 12990075Sobrien#endif 13090075Sobrien#ifdef TARGET_ARCH_arm 13118334Speter# include "c2_globals_arm.hpp" 13250397Sobrien#endif 13318334Speter#ifdef TARGET_OS_FAMILY_linux 13418334Speter# include "c2_globals_linux.hpp" 13518334Speter#endif 13618334Speter#ifdef TARGET_OS_FAMILY_solaris 13718334Speter# include "c2_globals_solaris.hpp" 13890075Sobrien#endif 13918334Speter#ifdef TARGET_OS_FAMILY_windows 14090075Sobrien# include "c2_globals_windows.hpp" 14190075Sobrien#endif 14290075Sobrien#ifdef TARGET_OS_FAMILY_bsd 14390075Sobrien# include "c2_globals_bsd.hpp" 14490075Sobrien#endif 14590075Sobrien#endif 14690075Sobrien#ifdef SHARK 14790075Sobrien#ifdef TARGET_ARCH_zero 14890075Sobrien# include "shark_globals_zero.hpp" 14990075Sobrien#endif 15090075Sobrien#endif 15190075Sobrien 15290075Sobrien#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) 15390075Sobriendefine_pd_global(bool, BackgroundCompilation, false); 15490075Sobriendefine_pd_global(bool, UseTLAB, false); 15590075Sobriendefine_pd_global(bool, CICompileOSR, false); 15690075Sobriendefine_pd_global(bool, UseTypeProfile, false); 15790075Sobriendefine_pd_global(bool, UseOnStackReplacement, false); 15890075Sobriendefine_pd_global(bool, InlineIntrinsics, false); 15990075Sobriendefine_pd_global(bool, PreferInterpreterNativeStubs, true); 16090075Sobriendefine_pd_global(bool, ProfileInterpreter, false); 16118334Speterdefine_pd_global(bool, ProfileTraps, false); 16218334Speterdefine_pd_global(bool, TieredCompilation, false); 16318334Speter 16418334Speterdefine_pd_global(intx, CompileThreshold, 0); 16518334Speterdefine_pd_global(intx, BackEdgeThreshold, 0); 16690075Sobrien 16718334Speterdefine_pd_global(intx, OnStackReplacePercentage, 0); 16890075Sobriendefine_pd_global(bool, ResizeTLAB, false); 16918334Speterdefine_pd_global(intx, FreqInlineSize, 0); 17018334Speterdefine_pd_global(intx, InlineSmallCode, 0); 17118334Speterdefine_pd_global(intx, NewSizeThreadIncrease, 4*K); 17218334Speterdefine_pd_global(intx, InlineClassNatives, true); 17318334Speterdefine_pd_global(intx, InlineUnsafeOps, true); 17418334Speterdefine_pd_global(intx, InitialCodeCacheSize, 160*K); 17518334Speterdefine_pd_global(intx, ReservedCodeCacheSize, 32*M); 17618334Speterdefine_pd_global(intx, CodeCacheExpansionSize, 32*K); 17718334Speterdefine_pd_global(intx, CodeCacheMinBlockLength, 1); 17818334Speterdefine_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M)); 17990075Sobriendefine_pd_global(bool, NeverActAsServerClassMachine, true); 18090075Sobriendefine_pd_global(uint64_t,MaxRAM, 1ULL*G); 18118334Speter#define CI_COMPILER_COUNT 0 18218334Speter#else 18318334Speter 18418334Speter#ifdef COMPILER2 18518334Speter#define CI_COMPILER_COUNT 2 18618334Speter#else 18718334Speter#define CI_COMPILER_COUNT 1 18818334Speter#endif // COMPILER2 18918334Speter 19018334Speter#endif // no compilers 19118334Speter 19218334Speter// string type aliases used only in this file 19318334Spetertypedef const char* ccstr; 19418334Spetertypedef const char* ccstrlist; // represents string arguments which accumulate 19518334Speter 19618334Speterenum FlagValueOrigin { 19718334Speter DEFAULT = 0, 19818334Speter COMMAND_LINE = 1, 19918334Speter ENVIRON_VAR = 2, 20018334Speter CONFIG_FILE = 3, 20118334Speter MANAGEMENT = 4, 20218334Speter ERGONOMIC = 5, 20318334Speter ATTACH_ON_DEMAND = 6, 20418334Speter INTERNAL = 99 20518334Speter}; 20618334Speter 20718334Speterstruct Flag { 20818334Speter const char *type; 20918334Speter const char *name; 21018334Speter void* addr; 21118334Speter 21290075Sobrien NOT_PRODUCT(const char *doc;) 21318334Speter 21418334Speter const char *kind; 21590075Sobrien FlagValueOrigin origin; 21618334Speter 21718334Speter // points to all Flags static array 21818334Speter static Flag *flags; 21918334Speter 22018334Speter // number of flags 22118334Speter static size_t numFlags; 22218334Speter 22318334Speter static Flag* find_flag(char* name, size_t length, bool allow_locked = false); 22490075Sobrien 22518334Speter bool is_bool() const { return strcmp(type, "bool") == 0; } 22618334Speter bool get_bool() const { return *((bool*) addr); } 22790075Sobrien void set_bool(bool value) { *((bool*) addr) = value; } 22890075Sobrien 22918334Speter bool is_intx() const { return strcmp(type, "intx") == 0; } 23018334Speter intx get_intx() const { return *((intx*) addr); } 23190075Sobrien void set_intx(intx value) { *((intx*) addr) = value; } 23218334Speter 23390075Sobrien bool is_uintx() const { return strcmp(type, "uintx") == 0; } 23490075Sobrien uintx get_uintx() const { return *((uintx*) addr); } 23590075Sobrien void set_uintx(uintx value) { *((uintx*) addr) = value; } 23690075Sobrien 23790075Sobrien bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } 23890075Sobrien uint64_t get_uint64_t() const { return *((uint64_t*) addr); } 23990075Sobrien void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } 24018334Speter 24118334Speter bool is_double() const { return strcmp(type, "double") == 0; } 24218334Speter double get_double() const { return *((double*) addr); } 24318334Speter void set_double(double value) { *((double*) addr) = value; } 24418334Speter 24590075Sobrien bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } 24690075Sobrien bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } 24790075Sobrien ccstr get_ccstr() const { return *((ccstr*) addr); } 24890075Sobrien void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } 24918334Speter 25018334Speter bool is_unlocker() const; 25118334Speter bool is_unlocked() const; 25218334Speter bool is_writeable() const; 25318334Speter bool is_external() const; 25418334Speter 25550397Sobrien bool is_unlocker_ext() const; 25690075Sobrien bool is_unlocked_ext() const; 25790075Sobrien bool is_writeable_ext() const; 25818334Speter bool is_external_ext() const; 25990075Sobrien 26090075Sobrien void get_locked_message(char*, int) const; 26118334Speter void get_locked_message_ext(char*, int) const; 26218334Speter 26390075Sobrien void print_on(outputStream* st, bool withComments = false ); 26418334Speter void print_as_flag(outputStream* st); 26590075Sobrien}; 26690075Sobrien 26718334Speter// debug flags control various aspects of the VM and are global accessible 26890075Sobrien 26990075Sobrien// use FlagSetting to temporarily change some debug flag 27018334Speter// e.g. FlagSetting fs(DebugThisAndThat, true); 27190075Sobrien// restored to previous value upon leaving scope 27290075Sobrienclass FlagSetting { 27390075Sobrien bool val; 27490075Sobrien bool* flag; 27590075Sobrien public: 27690075Sobrien FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 27718334Speter ~FlagSetting() { *flag = val; } 278}; 279 280 281class CounterSetting { 282 intx* counter; 283 public: 284 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 285 ~CounterSetting() { (*counter)--; } 286}; 287 288 289class IntFlagSetting { 290 intx val; 291 intx* flag; 292 public: 293 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } 294 ~IntFlagSetting() { *flag = val; } 295}; 296 297 298class DoubleFlagSetting { 299 double val; 300 double* flag; 301 public: 302 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 303 ~DoubleFlagSetting() { *flag = val; } 304}; 305 306 307class CommandLineFlags { 308 public: 309 static bool boolAt(char* name, size_t len, bool* value); 310 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } 311 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); 312 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } 313 314 static bool intxAt(char* name, size_t len, intx* value); 315 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } 316 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); 317 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } 318 319 static bool uintxAt(char* name, size_t len, uintx* value); 320 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } 321 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); 322 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } 323 324 static bool uint64_tAt(char* name, size_t len, uint64_t* value); 325 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } 326 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); 327 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } 328 329 static bool doubleAt(char* name, size_t len, double* value); 330 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } 331 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); 332 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } 333 334 static bool ccstrAt(char* name, size_t len, ccstr* value); 335 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } 336 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); 337 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } 338 339 // Returns false if name is not a command line flag. 340 static bool wasSetOnCmdline(const char* name, bool* value); 341 static void printSetFlags(outputStream* out); 342 343 static void printFlags(outputStream* out, bool withComments); 344 345 static void verify() PRODUCT_RETURN; 346}; 347 348// use this for flags that are true by default in the debug version but 349// false in the optimized version, and vice versa 350#ifdef ASSERT 351#define trueInDebug true 352#define falseInDebug false 353#else 354#define trueInDebug false 355#define falseInDebug true 356#endif 357 358// use this for flags that are true per default in the product build 359// but false in development builds, and vice versa 360#ifdef PRODUCT 361#define trueInProduct true 362#define falseInProduct false 363#else 364#define trueInProduct false 365#define falseInProduct true 366#endif 367 368#ifdef JAVASE_EMBEDDED 369#define falseInEmbedded false 370#else 371#define falseInEmbedded true 372#endif 373 374// develop flags are settable / visible only during development and are constant in the PRODUCT version 375// product flags are always settable / visible 376// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 377 378// A flag must be declared with one of the following types: 379// bool, intx, uintx, ccstr. 380// The type "ccstr" is an alias for "const char*" and is used 381// only in this file, because the macrology requires single-token type names. 382 383// Note: Diagnostic options not meant for VM tuning or for product modes. 384// They are to be used for VM quality assurance or field diagnosis 385// of VM bugs. They are hidden so that users will not be encouraged to 386// try them as if they were VM ordinary execution options. However, they 387// are available in the product version of the VM. Under instruction 388// from support engineers, VM customers can turn them on to collect 389// diagnostic information about VM problems. To use a VM diagnostic 390// option, you must first specify +UnlockDiagnosticVMOptions. 391// (This master switch also affects the behavior of -Xprintflags.) 392// 393// experimental flags are in support of features that are not 394// part of the officially supported product, but are available 395// for experimenting with. They could, for example, be performance 396// features that may not have undergone full or rigorous QA, but which may 397// help performance in some cases and released for experimentation 398// by the community of users and developers. This flag also allows one to 399// be able to build a fully supported product that nonetheless also 400// ships with some unsupported, lightly tested, experimental features. 401// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 402// UnlockExperimentalVMOptions flag, which allows the control and 403// modification of the experimental flags. 404// 405// Nota bene: neither diagnostic nor experimental options should be used casually, 406// and they are not supported on production loads, except under explicit 407// direction from support engineers. 408// 409// manageable flags are writeable external product flags. 410// They are dynamically writeable through the JDK management interface 411// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 412// These flags are external exported interface (see CCC). The list of 413// manageable flags can be queried programmatically through the management 414// interface. 415// 416// A flag can be made as "manageable" only if 417// - the flag is defined in a CCC as an external exported interface. 418// - the VM implementation supports dynamic setting of the flag. 419// This implies that the VM must *always* query the flag variable 420// and not reuse state related to the flag state at any given time. 421// - you want the flag to be queried programmatically by the customers. 422// 423// product_rw flags are writeable internal product flags. 424// They are like "manageable" flags but for internal/private use. 425// The list of product_rw flags are internal/private flags which 426// may be changed/removed in a future release. It can be set 427// through the management interface to get/set value 428// when the name of flag is supplied. 429// 430// A flag can be made as "product_rw" only if 431// - the VM implementation supports dynamic setting of the flag. 432// This implies that the VM must *always* query the flag variable 433// and not reuse state related to the flag state at any given time. 434// 435// Note that when there is a need to support develop flags to be writeable, 436// it can be done in the same way as product_rw. 437 438#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ 439 \ 440 lp64_product(bool, UseCompressedOops, false, \ 441 "Use 32-bit object references in 64-bit VM " \ 442 "lp64_product means flag is always constant in 32 bit VM") \ 443 \ 444 lp64_product(bool, UseCompressedKlassPointers, false, \ 445 "Use 32-bit klass pointers in 64-bit VM " \ 446 "lp64_product means flag is always constant in 32 bit VM") \ 447 \ 448 notproduct(bool, CheckCompressedOops, true, \ 449 "generate checks in encoding/decoding code in debug VM") \ 450 \ 451 product_pd(uintx, HeapBaseMinAddress, \ 452 "OS specific low limit for heap base address") \ 453 \ 454 diagnostic(bool, PrintCompressedOopsMode, false, \ 455 "Print compressed oops base address and encoding mode") \ 456 \ 457 lp64_product(intx, ObjectAlignmentInBytes, 8, \ 458 "Default object alignment in bytes, 8 is minimum") \ 459 \ 460 /* UseMembar is theoretically a temp flag used for memory barrier \ 461 * removal testing. It was supposed to be removed before FCS but has \ 462 * been re-added (see 6401008) */ \ 463 product_pd(bool, UseMembar, \ 464 "(Unstable) Issues membars on thread state transitions") \ 465 \ 466 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ 467 * that don't support it. This will be replaced by processor detection \ 468 * logic. \ 469 */ \ 470 product(bool, UsePPCLWSYNC, true, \ 471 "Use lwsync instruction if true, else use slower sync") \ 472 \ 473 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ 474 "Whether to clean the chunk pool asynchronously") \ 475 \ 476 /* Temporary: See 6948537 */ \ 477 experimental(bool, UseMemSetInBOT, true, \ 478 "(Unstable) uses memset in BOT updates in GC code") \ 479 \ 480 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 481 "Enable normal processing of flags relating to field diagnostics")\ 482 \ 483 experimental(bool, UnlockExperimentalVMOptions, false, \ 484 "Enable normal processing of flags relating to experimental features")\ 485 \ 486 product(bool, JavaMonitorsInStackTrace, true, \ 487 "Print info. about Java monitor locks when the stacks are dumped")\ 488 \ 489 product_pd(bool, UseLargePages, \ 490 "Use large page memory") \ 491 \ 492 product_pd(bool, UseLargePagesIndividualAllocation, \ 493 "Allocate large pages individually for better affinity") \ 494 \ 495 develop(bool, LargePagesIndividualAllocationInjectError, false, \ 496 "Fail large pages individual allocation") \ 497 \ 498 develop(bool, TracePageSizes, false, \ 499 "Trace page size selection and usage.") \ 500 \ 501 product(bool, UseNUMA, false, \ 502 "Use NUMA if available") \ 503 \ 504 product(bool, UseNUMAInterleaving, false, \ 505 "Interleave memory across NUMA nodes if available") \ 506 \ 507 product(uintx, NUMAInterleaveGranularity, 2*M, \ 508 "Granularity to use for NUMA interleaving on Windows OS") \ 509 \ 510 product(bool, ForceNUMA, false, \ 511 "Force NUMA optimizations on single-node/UMA systems") \ 512 \ 513 product(intx, NUMAChunkResizeWeight, 20, \ 514 "Percentage (0-100) used to weight the current sample when " \ 515 "computing exponentially decaying average for " \ 516 "AdaptiveNUMAChunkSizing") \ 517 \ 518 product(intx, NUMASpaceResizeRate, 1*G, \ 519 "Do not reallocate more that this amount per collection") \ 520 \ 521 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 522 "Enable adaptive chunk sizing for NUMA") \ 523 \ 524 product(bool, NUMAStats, false, \ 525 "Print NUMA stats in detailed heap information") \ 526 \ 527 product(intx, NUMAPageScanRate, 256, \ 528 "Maximum number of pages to include in the page scan procedure") \ 529 \ 530 product_pd(bool, NeedsDeoptSuspend, \ 531 "True for register window machines (sparc/ia64)") \ 532 \ 533 product(intx, UseSSE, 99, \ 534 "Highest supported SSE instructions set on x86/x64") \ 535 \ 536 product(bool, UseAES, false, \ 537 "Control whether AES instructions can be used on x86/x64") \ 538 \ 539 product(uintx, LargePageSizeInBytes, 0, \ 540 "Large page size (0 to let VM choose the page size") \ 541 \ 542 product(uintx, LargePageHeapSizeThreshold, 128*M, \ 543 "Use large pages if max heap is at least this big") \ 544 \ 545 product(bool, ForceTimeHighResolution, false, \ 546 "Using high time resolution(For Win32 only)") \ 547 \ 548 develop(bool, TraceItables, false, \ 549 "Trace initialization and use of itables") \ 550 \ 551 develop(bool, TracePcPatching, false, \ 552 "Trace usage of frame::patch_pc") \ 553 \ 554 develop(bool, TraceJumps, false, \ 555 "Trace assembly jumps in thread ring buffer") \ 556 \ 557 develop(bool, TraceRelocator, false, \ 558 "Trace the bytecode relocator") \ 559 \ 560 develop(bool, TraceLongCompiles, false, \ 561 "Print out every time compilation is longer than " \ 562 "a given threashold") \ 563 \ 564 develop(bool, SafepointALot, false, \ 565 "Generates a lot of safepoints. Works with " \ 566 "GuaranteedSafepointInterval") \ 567 \ 568 product_pd(bool, BackgroundCompilation, \ 569 "A thread requesting compilation is not blocked during " \ 570 "compilation") \ 571 \ 572 product(bool, PrintVMQWaitTime, false, \ 573 "Prints out the waiting time in VM operation queue") \ 574 \ 575 develop(bool, NoYieldsInMicrolock, false, \ 576 "Disable yields in microlock") \ 577 \ 578 develop(bool, TraceOopMapGeneration, false, \ 579 "Shows oopmap generation") \ 580 \ 581 product(bool, MethodFlushing, true, \ 582 "Reclamation of zombie and not-entrant methods") \ 583 \ 584 develop(bool, VerifyStack, false, \ 585 "Verify stack of each thread when it is entering a runtime call") \ 586 \ 587 diagnostic(bool, ForceUnreachable, false, \ 588 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ 589 \ 590 notproduct(bool, StressDerivedPointers, false, \ 591 "Force scavenge when a derived pointers is detected on stack " \ 592 "after rtm call") \ 593 \ 594 develop(bool, TraceDerivedPointers, false, \ 595 "Trace traversal of derived pointers on stack") \ 596 \ 597 notproduct(bool, TraceCodeBlobStacks, false, \ 598 "Trace stack-walk of codeblobs") \ 599 \ 600 product(bool, PrintJNIResolving, false, \ 601 "Used to implement -v:jni") \ 602 \ 603 notproduct(bool, PrintRewrites, false, \ 604 "Print methods that are being rewritten") \ 605 \ 606 product(bool, UseInlineCaches, true, \ 607 "Use Inline Caches for virtual calls ") \ 608 \ 609 develop(bool, InlineArrayCopy, true, \ 610 "inline arraycopy native that is known to be part of " \ 611 "base library DLL") \ 612 \ 613 develop(bool, InlineObjectHash, true, \ 614 "inline Object::hashCode() native that is known to be part " \ 615 "of base library DLL") \ 616 \ 617 develop(bool, InlineNatives, true, \ 618 "inline natives that are known to be part of base library DLL") \ 619 \ 620 develop(bool, InlineMathNatives, true, \ 621 "inline SinD, CosD, etc.") \ 622 \ 623 develop(bool, InlineClassNatives, true, \ 624 "inline Class.isInstance, etc") \ 625 \ 626 develop(bool, InlineThreadNatives, true, \ 627 "inline Thread.currentThread, etc") \ 628 \ 629 develop(bool, InlineUnsafeOps, true, \ 630 "inline memory ops (native methods) from sun.misc.Unsafe") \ 631 \ 632 product(bool, CriticalJNINatives, true, \ 633 "check for critical JNI entry points") \ 634 \ 635 notproduct(bool, StressCriticalJNINatives, false, \ 636 "Exercise register saving code in critical natives") \ 637 \ 638 product(bool, UseSSE42Intrinsics, false, \ 639 "SSE4.2 versions of intrinsics") \ 640 \ 641 product(bool, UseAESIntrinsics, false, \ 642 "use intrinsics for AES versions of crypto") \ 643 \ 644 develop(bool, TraceCallFixup, false, \ 645 "traces all call fixups") \ 646 \ 647 develop(bool, DeoptimizeALot, false, \ 648 "deoptimize at every exit from the runtime system") \ 649 \ 650 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 651 "a comma separated list of bcis to deoptimize at") \ 652 \ 653 product(bool, DeoptimizeRandom, false, \ 654 "deoptimize random frames on random exit from the runtime system")\ 655 \ 656 notproduct(bool, ZombieALot, false, \ 657 "creates zombies (non-entrant) at exit from the runt. system") \ 658 \ 659 product(bool, UnlinkSymbolsALot, false, \ 660 "unlink unreferenced symbols from the symbol table at safepoints")\ 661 \ 662 notproduct(bool, WalkStackALot, false, \ 663 "trace stack (no print) at every exit from the runtime system") \ 664 \ 665 product(bool, Debugging, false, \ 666 "set when executing debug methods in debug.ccp " \ 667 "(to prevent triggering assertions)") \ 668 \ 669 notproduct(bool, StrictSafepointChecks, trueInDebug, \ 670 "Enable strict checks that safepoints cannot happen for threads " \ 671 "that used No_Safepoint_Verifier") \ 672 \ 673 notproduct(bool, VerifyLastFrame, false, \ 674 "Verify oops on last frame on entry to VM") \ 675 \ 676 develop(bool, TraceHandleAllocation, false, \ 677 "Prints out warnings when suspicious many handles are allocated") \ 678 \ 679 product(bool, UseCompilerSafepoints, true, \ 680 "Stop at safepoints in compiled code") \ 681 \ 682 product(bool, UseSplitVerifier, true, \ 683 "use split verifier with StackMapTable attributes") \ 684 \ 685 product(bool, FailOverToOldVerifier, true, \ 686 "fail over to old verifier when split verifier fails") \ 687 \ 688 develop(bool, ShowSafepointMsgs, false, \ 689 "Show msg. about safepoint synch.") \ 690 \ 691 product(bool, SafepointTimeout, false, \ 692 "Time out and warn or fail after SafepointTimeoutDelay " \ 693 "milliseconds if failed to reach safepoint") \ 694 \ 695 develop(bool, DieOnSafepointTimeout, false, \ 696 "Die upon failure to reach safepoint (see SafepointTimeout)") \ 697 \ 698 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 699 /* typically, at most a few retries are needed */ \ 700 product(intx, SuspendRetryCount, 50, \ 701 "Maximum retry count for an external suspend request") \ 702 \ 703 product(intx, SuspendRetryDelay, 5, \ 704 "Milliseconds to delay per retry (* current_retry_count)") \ 705 \ 706 product(bool, AssertOnSuspendWaitFailure, false, \ 707 "Assert/Guarantee on external suspend wait failure") \ 708 \ 709 product(bool, TraceSuspendWaitFailures, false, \ 710 "Trace external suspend wait failures") \ 711 \ 712 product(bool, MaxFDLimit, true, \ 713 "Bump the number of file descriptors to max in solaris.") \ 714 \ 715 diagnostic(bool, LogEvents, true, \ 716 "Enable the various ring buffer event logs") \ 717 \ 718 diagnostic(intx, LogEventsBufferEntries, 10, \ 719 "Enable the various ring buffer event logs") \ 720 \ 721 product(bool, BytecodeVerificationRemote, true, \ 722 "Enables the Java bytecode verifier for remote classes") \ 723 \ 724 product(bool, BytecodeVerificationLocal, false, \ 725 "Enables the Java bytecode verifier for local classes") \ 726 \ 727 develop(bool, ForceFloatExceptions, trueInDebug, \ 728 "Force exceptions on FP stack under/overflow") \ 729 \ 730 develop(bool, VerifyStackAtCalls, false, \ 731 "Verify that the stack pointer is unchanged after calls") \ 732 \ 733 develop(bool, TraceJavaAssertions, false, \ 734 "Trace java language assertions") \ 735 \ 736 notproduct(bool, CheckAssertionStatusDirectives, false, \ 737 "temporary - see javaClasses.cpp") \ 738 \ 739 notproduct(bool, PrintMallocFree, false, \ 740 "Trace calls to C heap malloc/free allocation") \ 741 \ 742 product(bool, PrintOopAddress, false, \ 743 "Always print the location of the oop") \ 744 \ 745 notproduct(bool, VerifyCodeCacheOften, false, \ 746 "Verify compiled-code cache often") \ 747 \ 748 develop(bool, ZapDeadCompiledLocals, false, \ 749 "Zap dead locals in compiler frames") \ 750 \ 751 notproduct(bool, ZapDeadLocalsOld, false, \ 752 "Zap dead locals (old version, zaps all frames when " \ 753 "entering the VM") \ 754 \ 755 notproduct(bool, CheckOopishValues, false, \ 756 "Warn if value contains oop ( requires ZapDeadLocals)") \ 757 \ 758 develop(bool, UseMallocOnly, false, \ 759 "use only malloc/free for allocation (no resource area/arena)") \ 760 \ 761 develop(bool, PrintMalloc, false, \ 762 "print all malloc/free calls") \ 763 \ 764 develop(bool, PrintMallocStatistics, false, \ 765 "print malloc/free statistics") \ 766 \ 767 develop(bool, ZapResourceArea, trueInDebug, \ 768 "Zap freed resource/arena space with 0xABABABAB") \ 769 \ 770 notproduct(bool, ZapVMHandleArea, trueInDebug, \ 771 "Zap freed VM handle space with 0xBCBCBCBC") \ 772 \ 773 develop(bool, ZapJNIHandleArea, trueInDebug, \ 774 "Zap freed JNI handle space with 0xFEFEFEFE") \ 775 \ 776 notproduct(bool, ZapStackSegments, trueInDebug, \ 777 "Zap allocated/freed Stack segments with 0xFADFADED") \ 778 \ 779 develop(bool, ZapUnusedHeapArea, trueInDebug, \ 780 "Zap unused heap space with 0xBAADBABE") \ 781 \ 782 develop(bool, TraceZapUnusedHeapArea, false, \ 783 "Trace zapping of unused heap space") \ 784 \ 785 develop(bool, CheckZapUnusedHeapArea, false, \ 786 "Check zapping of unused heap space") \ 787 \ 788 develop(bool, ZapFillerObjects, trueInDebug, \ 789 "Zap filler objects with 0xDEAFBABE") \ 790 \ 791 develop(bool, PrintVMMessages, true, \ 792 "Print vm messages on console") \ 793 \ 794 product(bool, PrintGCApplicationConcurrentTime, false, \ 795 "Print the time the application has been running") \ 796 \ 797 product(bool, PrintGCApplicationStoppedTime, false, \ 798 "Print the time the application has been stopped") \ 799 \ 800 diagnostic(bool, VerboseVerification, false, \ 801 "Display detailed verification details") \ 802 \ 803 notproduct(uintx, ErrorHandlerTest, 0, \ 804 "If > 0, provokes an error after VM initialization; the value" \ 805 "determines which error to provoke. See test_error_handler()" \ 806 "in debug.cpp.") \ 807 \ 808 develop(bool, Verbose, false, \ 809 "Prints additional debugging information from other modes") \ 810 \ 811 develop(bool, PrintMiscellaneous, false, \ 812 "Prints uncategorized debugging information (requires +Verbose)") \ 813 \ 814 develop(bool, WizardMode, false, \ 815 "Prints much more debugging information") \ 816 \ 817 product(bool, ShowMessageBoxOnError, false, \ 818 "Keep process alive on VM fatal error") \ 819 \ 820 product(bool, CreateMinidumpOnCrash, false, \ 821 "Create minidump on VM fatal error") \ 822 \ 823 product_pd(bool, UseOSErrorReporting, \ 824 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 825 \ 826 product(bool, SuppressFatalErrorMessage, false, \ 827 "Do NO Fatal Error report [Avoid deadlock]") \ 828 \ 829 product(ccstrlist, OnError, "", \ 830 "Run user-defined commands on fatal error; see VMError.cpp " \ 831 "for examples") \ 832 \ 833 product(ccstrlist, OnOutOfMemoryError, "", \ 834 "Run user-defined commands on first java.lang.OutOfMemoryError") \ 835 \ 836 manageable(bool, HeapDumpBeforeFullGC, false, \ 837 "Dump heap to file before any major stop-world GC") \ 838 \ 839 manageable(bool, HeapDumpAfterFullGC, false, \ 840 "Dump heap to file after any major stop-world GC") \ 841 \ 842 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 843 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 844 \ 845 manageable(ccstr, HeapDumpPath, NULL, \ 846 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ 847 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ 848 "in the working directory)") \ 849 \ 850 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ 851 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 852 "when the heap usage is larger than this") \ 853 \ 854 develop(uintx, HeapDumpSegmentSize, 1*G, \ 855 "Approximate segment size when generating a segmented heap dump") \ 856 \ 857 develop(bool, BreakAtWarning, false, \ 858 "Execute breakpoint upon encountering VM warning") \ 859 \ 860 develop(bool, TraceVMOperation, false, \ 861 "Trace vm operations") \ 862 \ 863 develop(bool, UseFakeTimers, false, \ 864 "Tells whether the VM should use system time or a fake timer") \ 865 \ 866 product(ccstr, NativeMemoryTracking, "off", \ 867 "Native memory tracking options") \ 868 \ 869 diagnostic(bool, PrintNMTStatistics, false, \ 870 "Print native memory tracking summary data if it is on") \ 871 \ 872 diagnostic(bool, LogCompilation, false, \ 873 "Log compilation activity in detail to hotspot.log or LogFile") \ 874 \ 875 product(bool, PrintCompilation, false, \ 876 "Print compilations") \ 877 \ 878 diagnostic(bool, TraceNMethodInstalls, false, \ 879 "Trace nmethod intallation") \ 880 \ 881 diagnostic(intx, ScavengeRootsInCode, 2, \ 882 "0: do not allow scavengable oops in the code cache; " \ 883 "1: allow scavenging from the code cache; " \ 884 "2: emit as many constants as the compiler can see") \ 885 \ 886 product(bool, AlwaysRestoreFPU, false, \ 887 "Restore the FPU control word after every JNI call (expensive)") \ 888 \ 889 diagnostic(bool, PrintCompilation2, false, \ 890 "Print additional statistics per compilation") \ 891 \ 892 diagnostic(bool, PrintAdapterHandlers, false, \ 893 "Print code generated for i2c/c2i adapters") \ 894 \ 895 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 896 "Verify that i2c/c2i adapters are called properly") \ 897 \ 898 develop(bool, VerifyAdapterSharing, false, \ 899 "Verify that the code for shared adapters is the equivalent") \ 900 \ 901 diagnostic(bool, PrintAssembly, false, \ 902 "Print assembly code (using external disassembler.so)") \ 903 \ 904 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 905 "Options string passed to disassembler.so") \ 906 \ 907 diagnostic(bool, PrintNMethods, false, \ 908 "Print assembly code for nmethods when generated") \ 909 \ 910 diagnostic(bool, PrintNativeNMethods, false, \ 911 "Print assembly code for native nmethods when generated") \ 912 \ 913 develop(bool, PrintDebugInfo, false, \ 914 "Print debug information for all nmethods when generated") \ 915 \ 916 develop(bool, PrintRelocations, false, \ 917 "Print relocation information for all nmethods when generated") \ 918 \ 919 develop(bool, PrintDependencies, false, \ 920 "Print dependency information for all nmethods when generated") \ 921 \ 922 develop(bool, PrintExceptionHandlers, false, \ 923 "Print exception handler tables for all nmethods when generated") \ 924 \ 925 develop(bool, StressCompiledExceptionHandlers, false, \ 926 "Exercise compiled exception handlers") \ 927 \ 928 develop(bool, InterceptOSException, false, \ 929 "Starts debugger when an implicit OS (e.g., NULL) " \ 930 "exception happens") \ 931 \ 932 notproduct(bool, PrintCodeCache, false, \ 933 "Print the compiled_code cache when exiting") \ 934 \ 935 develop(bool, PrintCodeCache2, false, \ 936 "Print detailed info on the compiled_code cache when exiting") \ 937 \ 938 diagnostic(bool, PrintStubCode, false, \ 939 "Print generated stub code") \ 940 \ 941 product(bool, StackTraceInThrowable, true, \ 942 "Collect backtrace in throwable when exception happens") \ 943 \ 944 product(bool, OmitStackTraceInFastThrow, true, \ 945 "Omit backtraces for some 'hot' exceptions in optimized code") \ 946 \ 947 product(bool, ProfilerPrintByteCodeStatistics, false, \ 948 "Prints byte code statictics when dumping profiler output") \ 949 \ 950 product(bool, ProfilerRecordPC, false, \ 951 "Collects tick for each 16 byte interval of compiled code") \ 952 \ 953 product(bool, ProfileVM, false, \ 954 "Profiles ticks that fall within VM (either in the VM Thread " \ 955 "or VM code called through stubs)") \ 956 \ 957 product(bool, ProfileIntervals, false, \ 958 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ 959 \ 960 notproduct(bool, ProfilerCheckIntervals, false, \ 961 "Collect and print info on spacing of profiler ticks") \ 962 \ 963 develop(bool, PrintJVMWarnings, false, \ 964 "Prints warnings for unimplemented JVM functions") \ 965 \ 966 product(bool, PrintWarnings, true, \ 967 "Prints JVM warnings to output stream") \ 968 \ 969 notproduct(uintx, WarnOnStalledSpinLock, 0, \ 970 "Prints warnings for stalled SpinLocks") \ 971 \ 972 develop(bool, InitializeJavaLangSystem, true, \ 973 "Initialize java.lang.System - turn off for individual " \ 974 "method debugging") \ 975 \ 976 develop(bool, InitializeJavaLangString, true, \ 977 "Initialize java.lang.String - turn off for individual " \ 978 "method debugging") \ 979 \ 980 develop(bool, InitializeJavaLangExceptionsErrors, true, \ 981 "Initialize various error and exception classes - turn off for " \ 982 "individual method debugging") \ 983 \ 984 product(bool, RegisterFinalizersAtInit, true, \ 985 "Register finalizable objects at end of Object.<init> or " \ 986 "after allocation") \ 987 \ 988 develop(bool, RegisterReferences, true, \ 989 "Tells whether the VM should register soft/weak/final/phantom " \ 990 "references") \ 991 \ 992 develop(bool, IgnoreRewrites, false, \ 993 "Supress rewrites of bytecodes in the oopmap generator. " \ 994 "This is unsafe!") \ 995 \ 996 develop(bool, PrintCodeCacheExtension, false, \ 997 "Print extension of code cache") \ 998 \ 999 develop(bool, UsePrivilegedStack, true, \ 1000 "Enable the security JVM functions") \ 1001 \ 1002 develop(bool, ProtectionDomainVerification, true, \ 1003 "Verifies protection domain before resolution in system " \ 1004 "dictionary") \ 1005 \ 1006 product(bool, ClassUnloading, true, \ 1007 "Do unloading of classes") \ 1008 \ 1009 develop(bool, DisableStartThread, false, \ 1010 "Disable starting of additional Java threads " \ 1011 "(for debugging only)") \ 1012 \ 1013 develop(bool, MemProfiling, false, \ 1014 "Write memory usage profiling to log file") \ 1015 \ 1016 notproduct(bool, PrintSystemDictionaryAtExit, false, \ 1017 "Prints the system dictionary at exit") \ 1018 \ 1019 experimental(intx, PredictedLoadedClassCount, 0, \ 1020 "Experimental: Tune loaded class cache starting size.") \ 1021 \ 1022 diagnostic(bool, UnsyncloadClass, false, \ 1023 "Unstable: VM calls loadClass unsynchronized. Custom " \ 1024 "class loader must call VM synchronized for findClass " \ 1025 "and defineClass.") \ 1026 \ 1027 product(bool, AlwaysLockClassLoader, false, \ 1028 "Require the VM to acquire the class loader lock before calling " \ 1029 "loadClass() even for class loaders registering " \ 1030 "as parallel capable") \ 1031 \ 1032 product(bool, AllowParallelDefineClass, false, \ 1033 "Allow parallel defineClass requests for class loaders " \ 1034 "registering as parallel capable") \ 1035 \ 1036 product(bool, MustCallLoadClassInternal, false, \ 1037 "Call loadClassInternal() rather than loadClass()") \ 1038 \ 1039 product_pd(bool, DontYieldALot, \ 1040 "Throw away obvious excess yield calls (for SOLARIS only)") \ 1041 \ 1042 product_pd(bool, ConvertSleepToYield, \ 1043 "Converts sleep(0) to thread yield " \ 1044 "(may be off for SOLARIS to improve GUI)") \ 1045 \ 1046 product(bool, ConvertYieldToSleep, false, \ 1047 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ 1048 "behavior (SOLARIS only)") \ 1049 \ 1050 product(bool, UseBoundThreads, true, \ 1051 "Bind user level threads to kernel threads (for SOLARIS only)") \ 1052 \ 1053 develop(bool, UseDetachedThreads, true, \ 1054 "Use detached threads that are recycled upon termination " \ 1055 "(for SOLARIS only)") \ 1056 \ 1057 product(bool, UseLWPSynchronization, true, \ 1058 "Use LWP-based instead of libthread-based synchronization " \ 1059 "(SPARC only)") \ 1060 \ 1061 product(ccstr, SyncKnobs, NULL, \ 1062 "(Unstable) Various monitor synchronization tunables") \ 1063 \ 1064 product(intx, EmitSync, 0, \ 1065 "(Unsafe,Unstable) " \ 1066 " Controls emission of inline sync fast-path code") \ 1067 \ 1068 product(intx, MonitorBound, 0, "Bound Monitor population") \ 1069 \ 1070 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ 1071 \ 1072 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ 1073 \ 1074 product(intx, SyncVerbose, 0, "(Unstable)" ) \ 1075 \ 1076 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ 1077 \ 1078 product(intx, hashCode, 0, \ 1079 "(Unstable) select hashCode generation algorithm" ) \ 1080 \ 1081 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ 1082 "(Unstable, Linux-specific)" \ 1083 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ 1084 \ 1085 product(bool, FilterSpuriousWakeups, true, \ 1086 "Prevent spurious or premature wakeups from object.wait " \ 1087 "(Solaris only)") \ 1088 \ 1089 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ 1090 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ 1091 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ 1092 \ 1093 develop(bool, UsePthreads, false, \ 1094 "Use pthread-based instead of libthread-based synchronization " \ 1095 "(SPARC only)") \ 1096 \ 1097 product(bool, AdjustConcurrency, false, \ 1098 "call thr_setconcurrency at thread create time to avoid " \ 1099 "LWP starvation on MP systems (For Solaris Only)") \ 1100 \ 1101 product(bool, ReduceSignalUsage, false, \ 1102 "Reduce the use of OS signals in Java and/or the VM") \ 1103 \ 1104 develop_pd(bool, ShareVtableStubs, \ 1105 "Share vtable stubs (smaller code but worse branch prediction") \ 1106 \ 1107 develop(bool, LoadLineNumberTables, true, \ 1108 "Tells whether the class file parser loads line number tables") \ 1109 \ 1110 develop(bool, LoadLocalVariableTables, true, \ 1111 "Tells whether the class file parser loads local variable tables")\ 1112 \ 1113 develop(bool, LoadLocalVariableTypeTables, true, \ 1114 "Tells whether the class file parser loads local variable type tables")\ 1115 \ 1116 product(bool, AllowUserSignalHandlers, false, \ 1117 "Do not complain if the application installs signal handlers " \ 1118 "(Solaris & Linux only)") \ 1119 \ 1120 product(bool, UseSignalChaining, true, \ 1121 "Use signal-chaining to invoke signal handlers installed " \ 1122 "by the application (Solaris & Linux only)") \ 1123 \ 1124 product(bool, UseAltSigs, false, \ 1125 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 1126 "internal signals (Solaris only)") \ 1127 \ 1128 product(bool, AllowJNIEnvProxy, false, \ 1129 "Allow JNIEnv proxies for jdbx") \ 1130 \ 1131 product(bool, JNIDetachReleasesMonitors, true, \ 1132 "JNI DetachCurrentThread releases monitors owned by thread") \ 1133 \ 1134 product(bool, RestoreMXCSROnJNICalls, false, \ 1135 "Restore MXCSR when returning from JNI calls") \ 1136 \ 1137 product(bool, CheckJNICalls, false, \ 1138 "Verify all arguments to JNI calls") \ 1139 \ 1140 product(bool, UseFastJNIAccessors, true, \ 1141 "Use optimized versions of Get<Primitive>Field") \ 1142 \ 1143 product(bool, EagerXrunInit, false, \ 1144 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 1145 " but not all -Xrun libraries may support the state of the VM at this time") \ 1146 \ 1147 product(bool, PreserveAllAnnotations, false, \ 1148 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ 1149 \ 1150 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 1151 "Number of OutOfMemoryErrors preallocated with backtrace") \ 1152 \ 1153 product(bool, LazyBootClassLoader, true, \ 1154 "Enable/disable lazy opening of boot class path entries") \ 1155 \ 1156 product(bool, UseXMMForArrayCopy, false, \ 1157 "Use SSE2 MOVQ instruction for Arraycopy") \ 1158 \ 1159 product(intx, FieldsAllocationStyle, 1, \ 1160 "0 - type based with oops first, 1 - with oops last, " \ 1161 "2 - oops in super and sub classes are together") \ 1162 \ 1163 product(bool, CompactFields, true, \ 1164 "Allocate nonstatic fields in gaps between previous fields") \ 1165 \ 1166 notproduct(bool, PrintCompactFieldsSavings, false, \ 1167 "Print how many words were saved with CompactFields") \ 1168 \ 1169 product(bool, UseBiasedLocking, true, \ 1170 "Enable biased locking in JVM") \ 1171 \ 1172 product(intx, BiasedLockingStartupDelay, 4000, \ 1173 "Number of milliseconds to wait before enabling biased locking") \ 1174 \ 1175 diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1176 "Print statistics of biased locking in JVM") \ 1177 \ 1178 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1179 "Threshold of number of revocations per type to try to " \ 1180 "rebias all objects in the heap of that type") \ 1181 \ 1182 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1183 "Threshold of number of revocations per type to permanently " \ 1184 "revoke biases of all objects in the heap of that type") \ 1185 \ 1186 product(intx, BiasedLockingDecayTime, 25000, \ 1187 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1188 "type after previous bulk rebias") \ 1189 \ 1190 /* tracing */ \ 1191 \ 1192 notproduct(bool, TraceRuntimeCalls, false, \ 1193 "Trace run-time calls") \ 1194 \ 1195 develop(bool, TraceJNICalls, false, \ 1196 "Trace JNI calls") \ 1197 \ 1198 notproduct(bool, TraceJVMCalls, false, \ 1199 "Trace JVM calls") \ 1200 \ 1201 product(ccstr, TraceJVMTI, NULL, \ 1202 "Trace flags for JVMTI functions and events") \ 1203 \ 1204 /* This option can change an EMCP method into an obsolete method. */ \ 1205 /* This can affect tests that except specific methods to be EMCP. */ \ 1206 /* This option should be used with caution. */ \ 1207 product(bool, StressLdcRewrite, false, \ 1208 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1209 \ 1210 product(intx, TraceRedefineClasses, 0, \ 1211 "Trace level for JVMTI RedefineClasses") \ 1212 \ 1213 develop(bool, StressMethodComparator, false, \ 1214 "run the MethodComparator on all loaded methods") \ 1215 \ 1216 /* change to false by default sometime after Mustang */ \ 1217 product(bool, VerifyMergedCPBytecodes, true, \ 1218 "Verify bytecodes after RedefineClasses constant pool merging") \ 1219 \ 1220 develop(bool, TraceJNIHandleAllocation, false, \ 1221 "Trace allocation/deallocation of JNI handle blocks") \ 1222 \ 1223 develop(bool, TraceThreadEvents, false, \ 1224 "Trace all thread events") \ 1225 \ 1226 develop(bool, TraceBytecodes, false, \ 1227 "Trace bytecode execution") \ 1228 \ 1229 develop(bool, TraceClassInitialization, false, \ 1230 "Trace class initialization") \ 1231 \ 1232 develop(bool, TraceExceptions, false, \ 1233 "Trace exceptions") \ 1234 \ 1235 develop(bool, TraceICs, false, \ 1236 "Trace inline cache changes") \ 1237 \ 1238 notproduct(bool, TraceInvocationCounterOverflow, false, \ 1239 "Trace method invocation counter overflow") \ 1240 \ 1241 develop(bool, TraceInlineCacheClearing, false, \ 1242 "Trace clearing of inline caches in nmethods") \ 1243 \ 1244 develop(bool, TraceDependencies, false, \ 1245 "Trace dependencies") \ 1246 \ 1247 develop(bool, VerifyDependencies, trueInDebug, \ 1248 "Exercise and verify the compilation dependency mechanism") \ 1249 \ 1250 develop(bool, TraceNewOopMapGeneration, false, \ 1251 "Trace OopMapGeneration") \ 1252 \ 1253 develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1254 "Trace OopMapGeneration: print detailed cell states") \ 1255 \ 1256 develop(bool, TimeOopMap, false, \ 1257 "Time calls to GenerateOopMap::compute_map() in sum") \ 1258 \ 1259 develop(bool, TimeOopMap2, false, \ 1260 "Time calls to GenerateOopMap::compute_map() individually") \ 1261 \ 1262 develop(bool, TraceMonitorMismatch, false, \ 1263 "Trace monitor matching failures during OopMapGeneration") \ 1264 \ 1265 develop(bool, TraceOopMapRewrites, false, \ 1266 "Trace rewritting of method oops during oop map generation") \ 1267 \ 1268 develop(bool, TraceSafepoint, false, \ 1269 "Trace safepoint operations") \ 1270 \ 1271 develop(bool, TraceICBuffer, false, \ 1272 "Trace usage of IC buffer") \ 1273 \ 1274 develop(bool, TraceCompiledIC, false, \ 1275 "Trace changes of compiled IC") \ 1276 \ 1277 notproduct(bool, TraceZapDeadLocals, false, \ 1278 "Trace zapping dead locals") \ 1279 \ 1280 develop(bool, TraceStartupTime, false, \ 1281 "Trace setup time") \ 1282 \ 1283 develop(bool, TraceProtectionDomainVerification, false, \ 1284 "Trace protection domain verifcation") \ 1285 \ 1286 develop(bool, TraceClearedExceptions, false, \ 1287 "Prints when an exception is forcibly cleared") \ 1288 \ 1289 product(bool, TraceClassResolution, false, \ 1290 "Trace all constant pool resolutions (for debugging)") \ 1291 \ 1292 product(bool, TraceBiasedLocking, false, \ 1293 "Trace biased locking in JVM") \ 1294 \ 1295 product(bool, TraceMonitorInflation, false, \ 1296 "Trace monitor inflation in JVM") \ 1297 \ 1298 /* gc */ \ 1299 \ 1300 product(bool, UseSerialGC, false, \ 1301 "Use the serial garbage collector") \ 1302 \ 1303 product(bool, UseG1GC, false, \ 1304 "Use the Garbage-First garbage collector") \ 1305 \ 1306 product(bool, UseParallelGC, false, \ 1307 "Use the Parallel Scavenge garbage collector") \ 1308 \ 1309 product(bool, UseParallelOldGC, false, \ 1310 "Use the Parallel Old garbage collector") \ 1311 \ 1312 product(uintx, HeapMaximumCompactionInterval, 20, \ 1313 "How often should we maximally compact the heap (not allowing " \ 1314 "any dead space)") \ 1315 \ 1316 product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1317 "The collection count for the first maximum compaction") \ 1318 \ 1319 product(bool, UseMaximumCompactionOnSystemGC, true, \ 1320 "In the Parallel Old garbage collector maximum compaction for " \ 1321 "a system GC") \ 1322 \ 1323 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1324 "The mean used by the par compact dead wood" \ 1325 "limiter (a number between 0-100).") \ 1326 \ 1327 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1328 "The standard deviation used by the par compact dead wood" \ 1329 "limiter (a number between 0-100).") \ 1330 \ 1331 product(uintx, ParallelGCThreads, 0, \ 1332 "Number of parallel threads parallel gc will use") \ 1333 \ 1334 product(bool, UseDynamicNumberOfGCThreads, false, \ 1335 "Dynamically choose the number of parallel threads " \ 1336 "parallel gc will use") \ 1337 \ 1338 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ 1339 "Force dynamic selection of the number of" \ 1340 "parallel threads parallel gc will use to aid debugging") \ 1341 \ 1342 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ 1343 "Size of heap (bytes) per GC thread used in calculating the " \ 1344 "number of GC threads") \ 1345 \ 1346 product(bool, TraceDynamicGCThreads, false, \ 1347 "Trace the dynamic GC thread usage") \ 1348 \ 1349 develop(bool, ParallelOldGCSplitALot, false, \ 1350 "Provoke splitting (copying data from a young gen space to" \ 1351 "multiple destination spaces)") \ 1352 \ 1353 develop(uintx, ParallelOldGCSplitInterval, 3, \ 1354 "How often to provoke splitting a young gen space") \ 1355 \ 1356 product(uintx, ConcGCThreads, 0, \ 1357 "Number of threads concurrent gc will use") \ 1358 \ 1359 product(uintx, YoungPLABSize, 4096, \ 1360 "Size of young gen promotion labs (in HeapWords)") \ 1361 \ 1362 product(uintx, OldPLABSize, 1024, \ 1363 "Size of old gen promotion labs (in HeapWords)") \ 1364 \ 1365 product(uintx, GCTaskTimeStampEntries, 200, \ 1366 "Number of time stamp entries per gc worker thread") \ 1367 \ 1368 product(bool, AlwaysTenure, false, \ 1369 "Always tenure objects in eden. (ParallelGC only)") \ 1370 \ 1371 product(bool, NeverTenure, false, \ 1372 "Never tenure objects in eden, May tenure on overflow " \ 1373 "(ParallelGC only)") \ 1374 \ 1375 product(bool, ScavengeBeforeFullGC, true, \ 1376 "Scavenge youngest generation before each full GC, " \ 1377 "used with UseParallelGC") \ 1378 \ 1379 develop(bool, ScavengeWithObjectsInToSpace, false, \ 1380 "Allow scavenges to occur when to_space contains objects.") \ 1381 \ 1382 product(bool, UseConcMarkSweepGC, false, \ 1383 "Use Concurrent Mark-Sweep GC in the old generation") \ 1384 \ 1385 product(bool, ExplicitGCInvokesConcurrent, false, \ 1386 "A System.gc() request invokes a concurrent collection;" \ 1387 " (effective only when UseConcMarkSweepGC)") \ 1388 \ 1389 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1390 "A System.gc() request invokes a concurrent collection and " \ 1391 "also unloads classes during such a concurrent gc cycle " \ 1392 "(effective only when UseConcMarkSweepGC)") \ 1393 \ 1394 product(bool, GCLockerInvokesConcurrent, false, \ 1395 "The exit of a JNI CS necessitating a scavenge also" \ 1396 " kicks off a bkgrd concurrent collection") \ 1397 \ 1398 product(uintx, GCLockerEdenExpansionPercent, 5, \ 1399 "How much the GC can expand the eden by while the GC locker " \ 1400 "is active (as a percentage)") \ 1401 \ 1402 develop(bool, UseCMSAdaptiveFreeLists, true, \ 1403 "Use Adaptive Free Lists in the CMS generation") \ 1404 \ 1405 develop(bool, UseAsyncConcMarkSweepGC, true, \ 1406 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1407 \ 1408 develop(bool, RotateCMSCollectionTypes, false, \ 1409 "Rotate the CMS collections among concurrent and STW") \ 1410 \ 1411 product(bool, UseCMSBestFit, true, \ 1412 "Use CMS best fit allocation strategy") \ 1413 \ 1414 product(bool, UseCMSCollectionPassing, true, \ 1415 "Use passing of collection from background to foreground") \ 1416 \ 1417 product(bool, UseParNewGC, false, \ 1418 "Use parallel threads in the new generation.") \ 1419 \ 1420 product(bool, ParallelGCVerbose, false, \ 1421 "Verbose output for parallel GC.") \ 1422 \ 1423 product(intx, ParallelGCBufferWastePct, 10, \ 1424 "wasted fraction of parallel allocation buffer.") \ 1425 \ 1426 diagnostic(bool, ParallelGCRetainPLAB, false, \ 1427 "Retain parallel allocation buffers across scavenges; " \ 1428 " -- disabled because this currently conflicts with " \ 1429 " parallel card scanning under certain conditions ") \ 1430 \ 1431 product(intx, TargetPLABWastePct, 10, \ 1432 "target wasted space in last buffer as pct of overall allocation")\ 1433 \ 1434 product(uintx, PLABWeight, 75, \ 1435 "Percentage (0-100) used to weight the current sample when" \ 1436 "computing exponentially decaying average for ResizePLAB.") \ 1437 \ 1438 product(bool, ResizePLAB, true, \ 1439 "Dynamically resize (survivor space) promotion labs") \ 1440 \ 1441 product(bool, PrintPLAB, false, \ 1442 "Print (survivor space) promotion labs sizing decisions") \ 1443 \ 1444 product(intx, ParGCArrayScanChunk, 50, \ 1445 "Scan a subset and push remainder, if array is bigger than this") \ 1446 \ 1447 product(bool, ParGCUseLocalOverflow, false, \ 1448 "Instead of a global overflow list, use local overflow stacks") \ 1449 \ 1450 product(bool, ParGCTrimOverflow, true, \ 1451 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ 1452 \ 1453 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 1454 "Whether we should simulate work queue overflow in ParNew") \ 1455 \ 1456 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1457 "An `interval' counter that determines how frequently " \ 1458 "we simulate overflow; a smaller number increases frequency") \ 1459 \ 1460 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1461 "The desired number of objects to claim from the overflow list") \ 1462 \ 1463 diagnostic(uintx, ParGCStridesPerThread, 2, \ 1464 "The number of strides per worker thread that we divide up the " \ 1465 "card table scanning work into") \ 1466 \ 1467 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ 1468 "The number of cards in each chunk of the parallel chunks used " \ 1469 "during card table scanning") \ 1470 \ 1471 product(uintx, CMSParPromoteBlocksToClaim, 16, \ 1472 "Number of blocks to attempt to claim when refilling CMS LAB for "\ 1473 "parallel GC.") \ 1474 \ 1475 product(uintx, OldPLABWeight, 50, \ 1476 "Percentage (0-100) used to weight the current sample when" \ 1477 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ 1478 \ 1479 product(bool, ResizeOldPLAB, true, \ 1480 "Dynamically resize (old gen) promotion labs") \ 1481 \ 1482 product(bool, PrintOldPLAB, false, \ 1483 "Print (old gen) promotion labs sizing decisions") \ 1484 \ 1485 product(uintx, CMSOldPLABMin, 16, \ 1486 "Min size of CMS gen promotion lab caches per worker per blksize")\ 1487 \ 1488 product(uintx, CMSOldPLABMax, 1024, \ 1489 "Max size of CMS gen promotion lab caches per worker per blksize")\ 1490 \ 1491 product(uintx, CMSOldPLABNumRefills, 4, \ 1492 "Nominal number of refills of CMS gen promotion lab cache" \ 1493 " per worker per block size") \ 1494 \ 1495 product(bool, CMSOldPLABResizeQuicker, false, \ 1496 "Whether to react on-the-fly during a scavenge to a sudden" \ 1497 " change in block demand rate") \ 1498 \ 1499 product(uintx, CMSOldPLABToleranceFactor, 4, \ 1500 "The tolerance of the phase-change detector for on-the-fly" \ 1501 " PLAB resizing during a scavenge") \ 1502 \ 1503 product(uintx, CMSOldPLABReactivityFactor, 2, \ 1504 "The gain in the feedback loop for on-the-fly PLAB resizing" \ 1505 " during a scavenge") \ 1506 \ 1507 product(bool, AlwaysPreTouch, false, \ 1508 "It forces all freshly committed pages to be pre-touched.") \ 1509 \ 1510 product_pd(intx, CMSYoungGenPerWorker, \ 1511 "The maximum size of young gen chosen by default per GC worker " \ 1512 "thread available") \ 1513 \ 1514 product(bool, CMSIncrementalMode, false, \ 1515 "Whether CMS GC should operate in \"incremental\" mode") \ 1516 \ 1517 product(uintx, CMSIncrementalDutyCycle, 10, \ 1518 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ 1519 "CMSIncrementalPacing is enabled, then this is just the initial" \ 1520 "value") \ 1521 \ 1522 product(bool, CMSIncrementalPacing, true, \ 1523 "Whether the CMS incremental mode duty cycle should be " \ 1524 "automatically adjusted") \ 1525 \ 1526 product(uintx, CMSIncrementalDutyCycleMin, 0, \ 1527 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ 1528 "enabled (a percentage, 0-100)") \ 1529 \ 1530 product(uintx, CMSIncrementalSafetyFactor, 10, \ 1531 "Percentage (0-100) used to add conservatism when computing the " \ 1532 "duty cycle") \ 1533 \ 1534 product(uintx, CMSIncrementalOffset, 0, \ 1535 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ 1536 " is shifted to the right within the period between young GCs") \ 1537 \ 1538 product(uintx, CMSExpAvgFactor, 50, \ 1539 "Percentage (0-100) used to weight the current sample when" \ 1540 "computing exponential averages for CMS statistics.") \ 1541 \ 1542 product(uintx, CMS_FLSWeight, 75, \ 1543 "Percentage (0-100) used to weight the current sample when" \ 1544 "computing exponentially decating averages for CMS FLS statistics.") \ 1545 \ 1546 product(uintx, CMS_FLSPadding, 1, \ 1547 "The multiple of deviation from mean to use for buffering" \ 1548 "against volatility in free list demand.") \ 1549 \ 1550 product(uintx, FLSCoalescePolicy, 2, \ 1551 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ 1552 \ 1553 product(bool, FLSAlwaysCoalesceLarge, false, \ 1554 "CMS: Larger free blocks are always available for coalescing") \ 1555 \ 1556 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ 1557 "CMS: the smaller the percentage the greater the coalition force")\ 1558 \ 1559 product(double, CMSSmallCoalSurplusPercent, 1.05, \ 1560 "CMS: the factor by which to inflate estimated demand of small" \ 1561 " block sizes to prevent coalescing with an adjoining block") \ 1562 \ 1563 product(double, CMSLargeCoalSurplusPercent, 0.95, \ 1564 "CMS: the factor by which to inflate estimated demand of large" \ 1565 " block sizes to prevent coalescing with an adjoining block") \ 1566 \ 1567 product(double, CMSSmallSplitSurplusPercent, 1.10, \ 1568 "CMS: the factor by which to inflate estimated demand of small" \ 1569 " block sizes to prevent splitting to supply demand for smaller" \ 1570 " blocks") \ 1571 \ 1572 product(double, CMSLargeSplitSurplusPercent, 1.00, \ 1573 "CMS: the factor by which to inflate estimated demand of large" \ 1574 " block sizes to prevent splitting to supply demand for smaller" \ 1575 " blocks") \ 1576 \ 1577 product(bool, CMSExtrapolateSweep, false, \ 1578 "CMS: cushion for block demand during sweep") \ 1579 \ 1580 product(uintx, CMS_SweepWeight, 75, \ 1581 "Percentage (0-100) used to weight the current sample when " \ 1582 "computing exponentially decaying average for inter-sweep " \ 1583 "duration") \ 1584 \ 1585 product(uintx, CMS_SweepPadding, 1, \ 1586 "The multiple of deviation from mean to use for buffering " \ 1587 "against volatility in inter-sweep duration.") \ 1588 \ 1589 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1590 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1591 "duration exceeds this threhold in milliseconds") \ 1592 \ 1593 develop(bool, CMSTraceIncrementalMode, false, \ 1594 "Trace CMS incremental mode") \ 1595 \ 1596 develop(bool, CMSTraceIncrementalPacing, false, \ 1597 "Trace CMS incremental mode pacing computation") \ 1598 \ 1599 develop(bool, CMSTraceThreadState, false, \ 1600 "Trace the CMS thread state (enable the trace_state() method)") \ 1601 \ 1602 product(bool, CMSClassUnloadingEnabled, true, \ 1603 "Whether class unloading enabled when using CMS GC") \ 1604 \ 1605 product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1606 "When CMS class unloading is enabled, the maximum CMS cycle count"\ 1607 " for which classes may not be unloaded") \ 1608 \ 1609 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ 1610 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ 1611 \ 1612 product(bool, UseCMSCompactAtFullCollection, true, \ 1613 "Use mark sweep compact at full collections") \ 1614 \ 1615 product(uintx, CMSFullGCsBeforeCompaction, 0, \ 1616 "Number of CMS full collection done before compaction if > 0") \ 1617 \ 1618 develop(intx, CMSDictionaryChoice, 0, \ 1619 "Use BinaryTreeDictionary as default in the CMS generation") \ 1620 \ 1621 product(uintx, CMSIndexedFreeListReplenish, 4, \ 1622 "Replenish an indexed free list with this number of chunks") \ 1623 \ 1624 product(bool, CMSReplenishIntermediate, true, \ 1625 "Replenish all intermediate free-list caches") \ 1626 \ 1627 product(bool, CMSSplitIndexedFreeListBlocks, true, \ 1628 "When satisfying batched demand, split blocks from the " \ 1629 "IndexedFreeList whose size is a multiple of requested size") \ 1630 \ 1631 product(bool, CMSLoopWarn, false, \ 1632 "Warn in case of excessive CMS looping") \ 1633 \ 1634 develop(bool, CMSOverflowEarlyRestoration, false, \ 1635 "Whether preserved marks should be restored early") \ 1636 \ 1637 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1638 "Size of marking stack") \ 1639 \ 1640 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1641 "Max size of marking stack") \ 1642 \ 1643 notproduct(bool, CMSMarkStackOverflowALot, false, \ 1644 "Whether we should simulate frequent marking stack / work queue" \ 1645 " overflow") \ 1646 \ 1647 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1648 "An `interval' counter that determines how frequently" \ 1649 " we simulate overflow; a smaller number increases frequency") \ 1650 \ 1651 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1652 "(Temporary, subject to experimentation)" \ 1653 "Maximum number of abortable preclean iterations, if > 0") \ 1654 \ 1655 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1656 "(Temporary, subject to experimentation)" \ 1657 "Maximum time in abortable preclean in ms") \ 1658 \ 1659 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1660 "(Temporary, subject to experimentation)" \ 1661 "Nominal minimum work per abortable preclean iteration") \ 1662 \ 1663 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1664 "(Temporary, subject to experimentation)" \ 1665 " Time that we sleep between iterations when not given" \ 1666 " enough work per iteration") \ 1667 \ 1668 product(uintx, CMSRescanMultiple, 32, \ 1669 "Size (in cards) of CMS parallel rescan task") \ 1670 \ 1671 product(uintx, CMSConcMarkMultiple, 32, \ 1672 "Size (in cards) of CMS concurrent MT marking task") \ 1673 \ 1674 product(bool, CMSAbortSemantics, false, \ 1675 "Whether abort-on-overflow semantics is implemented") \ 1676 \ 1677 product(bool, CMSParallelRemarkEnabled, true, \ 1678 "Whether parallel remark enabled (only if ParNewGC)") \ 1679 \ 1680 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1681 "Whether parallel remark of survivor space" \ 1682 " enabled (effective only if CMSParallelRemarkEnabled)") \ 1683 \ 1684 product(bool, CMSPLABRecordAlways, true, \ 1685 "Whether to always record survivor space PLAB bdries" \ 1686 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ 1687 \ 1688 product(bool, CMSConcurrentMTEnabled, true, \ 1689 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ 1690 \ 1691 product(bool, CMSPrecleaningEnabled, true, \ 1692 "Whether concurrent precleaning enabled") \ 1693 \ 1694 product(uintx, CMSPrecleanIter, 3, \ 1695 "Maximum number of precleaning iteration passes") \ 1696 \ 1697 product(uintx, CMSPrecleanNumerator, 2, \ 1698 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1699 " ratio") \ 1700 \ 1701 product(uintx, CMSPrecleanDenominator, 3, \ 1702 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1703 " ratio") \ 1704 \ 1705 product(bool, CMSPrecleanRefLists1, true, \ 1706 "Preclean ref lists during (initial) preclean phase") \ 1707 \ 1708 product(bool, CMSPrecleanRefLists2, false, \ 1709 "Preclean ref lists during abortable preclean phase") \ 1710 \ 1711 product(bool, CMSPrecleanSurvivors1, false, \ 1712 "Preclean survivors during (initial) preclean phase") \ 1713 \ 1714 product(bool, CMSPrecleanSurvivors2, true, \ 1715 "Preclean survivors during abortable preclean phase") \ 1716 \ 1717 product(uintx, CMSPrecleanThreshold, 1000, \ 1718 "Don't re-iterate if #dirty cards less than this") \ 1719 \ 1720 product(bool, CMSCleanOnEnter, true, \ 1721 "Clean-on-enter optimization for reducing number of dirty cards") \ 1722 \ 1723 product(uintx, CMSRemarkVerifyVariant, 1, \ 1724 "Choose variant (1,2) of verification following remark") \ 1725 \ 1726 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1727 "If Eden used is below this value, don't try to schedule remark") \ 1728 \ 1729 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1730 "The Eden occupancy % at which to try and schedule remark pause") \ 1731 \ 1732 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1733 "Start sampling Eden top at least before yg occupancy reaches" \ 1734 " 1/<ratio> of the size at which we plan to schedule remark") \ 1735 \ 1736 product(uintx, CMSSamplingGrain, 16*K, \ 1737 "The minimum distance between eden samples for CMS (see above)") \ 1738 \ 1739 product(bool, CMSScavengeBeforeRemark, false, \ 1740 "Attempt scavenge before the CMS remark step") \ 1741 \ 1742 develop(bool, CMSTraceSweeper, false, \ 1743 "Trace some actions of the CMS sweeper") \ 1744 \ 1745 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1746 "Don't drain below this size per parallel worker/thief") \ 1747 \ 1748 manageable(intx, CMSWaitDuration, 2000, \ 1749 "Time in milliseconds that CMS thread waits for young GC") \ 1750 \ 1751 product(bool, CMSYield, true, \ 1752 "Yield between steps of concurrent mark & sweep") \ 1753 \ 1754 product(uintx, CMSBitMapYieldQuantum, 10*M, \ 1755 "Bitmap operations should process at most this many bits" \ 1756 "between yields") \ 1757 \ 1758 product(bool, CMSDumpAtPromotionFailure, false, \ 1759 "Dump useful information about the state of the CMS old " \ 1760 " generation upon a promotion failure.") \ 1761 \ 1762 product(bool, CMSPrintChunksInDump, false, \ 1763 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1764 " more detailed information about the free chunks.") \ 1765 \ 1766 product(bool, CMSPrintObjectsInDump, false, \ 1767 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ 1768 " more detailed information about the allocated objects.") \ 1769 \ 1770 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1771 "Verify that all refs across the FLS boundary " \ 1772 " are to valid objects") \ 1773 \ 1774 diagnostic(bool, FLSVerifyLists, false, \ 1775 "Do lots of (expensive) FreeListSpace verification") \ 1776 \ 1777 diagnostic(bool, FLSVerifyIndexTable, false, \ 1778 "Do lots of (expensive) FLS index table verification") \ 1779 \ 1780 develop(bool, FLSVerifyDictionary, false, \ 1781 "Do lots of (expensive) FLS dictionary verification") \ 1782 \ 1783 develop(bool, VerifyBlockOffsetArray, false, \ 1784 "Do (expensive!) block offset array verification") \ 1785 \ 1786 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ 1787 "Maintain _unallocated_block in BlockOffsetArray" \ 1788 " (currently applicable only to CMS collector)") \ 1789 \ 1790 develop(bool, TraceCMSState, false, \ 1791 "Trace the state of the CMS collection") \ 1792 \ 1793 product(intx, RefDiscoveryPolicy, 0, \ 1794 "Whether reference-based(0) or referent-based(1)") \ 1795 \ 1796 product(bool, ParallelRefProcEnabled, false, \ 1797 "Enable parallel reference processing whenever possible") \ 1798 \ 1799 product(bool, ParallelRefProcBalancingEnabled, true, \ 1800 "Enable balancing of reference processing queues") \ 1801 \ 1802 product(intx, CMSTriggerRatio, 80, \ 1803 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1804 "allocated before a CMS collection cycle commences") \ 1805 \ 1806 product(uintx, CMSBootstrapOccupancy, 50, \ 1807 "Percentage CMS generation occupancy at which to " \ 1808 "initiate CMS collection for bootstrapping collection stats") \ 1809 \ 1810 product(intx, CMSInitiatingOccupancyFraction, -1, \ 1811 "Percentage CMS generation occupancy to start a CMS collection " \ 1812 "cycle. A negative value means that CMSTriggerRatio is used") \ 1813 \ 1814 product(uintx, InitiatingHeapOccupancyPercent, 45, \ 1815 "Percentage of the (entire) heap occupancy to start a " \ 1816 "concurrent GC cycle. It us used by GCs that trigger a " \ 1817 "concurrent GC cycle based on the occupancy of the entire heap, " \ 1818 "not just one of the generations (e.g., G1). A value of 0 " \ 1819 "denotes 'do constant GC cycles'.") \ 1820 \ 1821 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1822 "Only use occupancy as a crierion for starting a CMS collection") \ 1823 \ 1824 product(intx, CMSIsTooFullPercentage, 98, \ 1825 "An absolute ceiling above which CMS will always consider the " \ 1826 "unloading of classes when class unloading is enabled") \ 1827 \ 1828 develop(bool, CMSTestInFreeList, false, \ 1829 "Check if the coalesced range is already in the " \ 1830 "free lists as claimed") \ 1831 \ 1832 notproduct(bool, CMSVerifyReturnedBytes, false, \ 1833 "Check that all the garbage collected was returned to the " \ 1834 "free lists.") \ 1835 \ 1836 notproduct(bool, ScavengeALot, false, \ 1837 "Force scavenge at every Nth exit from the runtime system " \ 1838 "(N=ScavengeALotInterval)") \ 1839 \ 1840 develop(bool, FullGCALot, false, \ 1841 "Force full gc at every Nth exit from the runtime system " \ 1842 "(N=FullGCALotInterval)") \ 1843 \ 1844 notproduct(bool, GCALotAtAllSafepoints, false, \ 1845 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1846 \ 1847 product(bool, PrintPromotionFailure, false, \ 1848 "Print additional diagnostic information following " \ 1849 " promotion failure") \ 1850 \ 1851 notproduct(bool, PromotionFailureALot, false, \ 1852 "Use promotion failure handling on every youngest generation " \ 1853 "collection") \ 1854 \ 1855 develop(uintx, PromotionFailureALotCount, 1000, \ 1856 "Number of promotion failures occurring at ParGCAllocBuffer" \ 1857 "refill attempts (ParNew) or promotion attempts " \ 1858 "(other young collectors) ") \ 1859 \ 1860 develop(uintx, PromotionFailureALotInterval, 5, \ 1861 "Total collections between promotion failures alot") \ 1862 \ 1863 experimental(intx, WorkStealingSleepMillis, 1, \ 1864 "Sleep time when sleep is used for yields") \ 1865 \ 1866 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 1867 "Number of yields before a sleep is done during workstealing") \ 1868 \ 1869 experimental(uintx, WorkStealingHardSpins, 4096, \ 1870 "Number of iterations in a spin loop between checks on " \ 1871 "time out of hard spin") \ 1872 \ 1873 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ 1874 "Ratio of hard spins to calls to yield") \ 1875 \ 1876 develop(uintx, ObjArrayMarkingStride, 512, \ 1877 "Number of ObjArray elements to push onto the marking stack" \ 1878 "before pushing a continuation entry") \ 1879 \ 1880 develop(bool, MetadataAllocationFailALot, false, \ 1881 "Fail metadata allocations at intervals controlled by " \ 1882 "MetadataAllocationFailALotInterval") \ 1883 \ 1884 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ 1885 "metadata allocation failure alot interval") \ 1886 \ 1887 develop(bool, MetaDataDeallocateALot, false, \ 1888 "Deallocation bunches of metadata at intervals controlled by " \ 1889 "MetaDataAllocateALotInterval") \ 1890 \ 1891 develop(uintx, MetaDataDeallocateALotInterval, 100, \ 1892 "Metadata deallocation alot interval") \ 1893 \ 1894 develop(bool, TraceMetadataChunkAllocation, false, \ 1895 "Trace chunk metadata allocations") \ 1896 \ 1897 product(bool, TraceMetadataHumongousAllocation, false, \ 1898 "Trace humongous metadata allocations") \ 1899 \ 1900 develop(bool, TraceMetavirtualspaceAllocation, false, \ 1901 "Trace virtual space metadata allocations") \ 1902 \ 1903 notproduct(bool, ExecuteInternalVMTests, false, \ 1904 "Enable execution of internal VM tests.") \ 1905 \ 1906 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 1907 \ 1908 product_pd(bool, ResizeTLAB, \ 1909 "Dynamically resize tlab size for threads") \ 1910 \ 1911 product(bool, ZeroTLAB, false, \ 1912 "Zero out the newly created TLAB") \ 1913 \ 1914 product(bool, FastTLABRefill, true, \ 1915 "Use fast TLAB refill code") \ 1916 \ 1917 product(bool, PrintTLAB, false, \ 1918 "Print various TLAB related information") \ 1919 \ 1920 product(bool, TLABStats, true, \ 1921 "Print various TLAB related information") \ 1922 \ 1923 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ 1924 "Enable LowMemoryProtection")) \ 1925 \ 1926 product_pd(bool, NeverActAsServerClassMachine, \ 1927 "Never act like a server-class machine") \ 1928 \ 1929 product(bool, AlwaysActAsServerClassMachine, false, \ 1930 "Always act like a server-class machine") \ 1931 \ 1932 product_pd(uint64_t, MaxRAM, \ 1933 "Real memory size (in bytes) used to set maximum heap size") \ 1934 \ 1935 product(uintx, ErgoHeapSizeLimit, 0, \ 1936 "Maximum ergonomically set heap size (in bytes); zero means use " \ 1937 "MaxRAM / MaxRAMFraction") \ 1938 \ 1939 product(uintx, MaxRAMFraction, 4, \ 1940 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1941 "size") \ 1942 \ 1943 product(uintx, DefaultMaxRAMFraction, 4, \ 1944 "Maximum fraction (1/n) of real memory used for maximum heap " \ 1945 "size; deprecated: to be renamed to MaxRAMFraction") \ 1946 \ 1947 product(uintx, MinRAMFraction, 2, \ 1948 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ 1949 "size on systems with small physical memory size") \ 1950 \ 1951 product(uintx, InitialRAMFraction, 64, \ 1952 "Fraction (1/n) of real memory used for initial heap size") \ 1953 \ 1954 product(bool, UseAutoGCSelectPolicy, false, \ 1955 "Use automatic collection selection policy") \ 1956 \ 1957 product(uintx, AutoGCSelectPauseMillis, 5000, \ 1958 "Automatic GC selection pause threshhold in ms") \ 1959 \ 1960 product(bool, UseAdaptiveSizePolicy, true, \ 1961 "Use adaptive generation sizing policies") \ 1962 \ 1963 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 1964 "Use adaptive survivor sizing policies") \ 1965 \ 1966 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 1967 "Use adaptive young-old sizing policies at minor collections") \ 1968 \ 1969 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 1970 "Use adaptive young-old sizing policies at major collections") \ 1971 \ 1972 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 1973 "Use statistics from System.GC for adaptive size policy") \ 1974 \ 1975 product(bool, UseAdaptiveGCBoundary, false, \ 1976 "Allow young-old boundary to move") \ 1977 \ 1978 develop(bool, TraceAdaptiveGCBoundary, false, \ 1979 "Trace young-old boundary moves") \ 1980 \ 1981 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 1982 "Resize the virtual spaces of the young or old generations") \ 1983 \ 1984 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 1985 "Policy for changeing generation size for throughput goals") \ 1986 \ 1987 product(uintx, AdaptiveSizePausePolicy, 0, \ 1988 "Policy for changing generation size for pause goals") \ 1989 \ 1990 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 1991 "Adjust tenured generation to achive a minor pause goal") \ 1992 \ 1993 develop(bool, PSAdjustYoungGenForMajorPause, false, \ 1994 "Adjust young generation to achive a major pause goal") \ 1995 \ 1996 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 1997 "Number of steps where heuristics is used before data is used") \ 1998 \ 1999 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2000 "Number of collections before the adaptive sizing is started") \ 2001 \ 2002 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2003 "Collecton interval for printing information; zero => never") \ 2004 \ 2005 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2006 "Use adaptive minimum footprint as a goal") \ 2007 \ 2008 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2009 "Weight given to exponential resizing, between 0 and 100") \ 2010 \ 2011 product(uintx, AdaptiveTimeWeight, 25, \ 2012 "Weight given to time in adaptive policy, between 0 and 100") \ 2013 \ 2014 product(uintx, PausePadding, 1, \ 2015 "How much buffer to keep for pause time") \ 2016 \ 2017 product(uintx, PromotedPadding, 3, \ 2018 "How much buffer to keep for promotion failure") \ 2019 \ 2020 product(uintx, SurvivorPadding, 3, \ 2021 "How much buffer to keep for survivor overflow") \ 2022 \ 2023 product(uintx, ThresholdTolerance, 10, \ 2024 "Allowed collection cost difference between generations") \ 2025 \ 2026 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 2027 "If collection costs are within margin, reduce both by full " \ 2028 "delta") \ 2029 \ 2030 product(uintx, YoungGenerationSizeIncrement, 20, \ 2031 "Adaptive size percentage change in young generation") \ 2032 \ 2033 product(uintx, YoungGenerationSizeSupplement, 80, \ 2034 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 2035 \ 2036 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 2037 "Decay factor to YoungedGenerationSizeSupplement") \ 2038 \ 2039 product(uintx, TenuredGenerationSizeIncrement, 20, \ 2040 "Adaptive size percentage change in tenured generation") \ 2041 \ 2042 product(uintx, TenuredGenerationSizeSupplement, 80, \ 2043 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 2044 \ 2045 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 2046 "Decay factor to TenuredGenerationSizeIncrement") \ 2047 \ 2048 product(uintx, MaxGCPauseMillis, max_uintx, \ 2049 "Adaptive size policy maximum GC pause time goal in msec, " \ 2050 "or (G1 Only) the max. GC time per MMU time slice") \ 2051 \ 2052 product(uintx, GCPauseIntervalMillis, 0, \ 2053 "Time slice for MMU specification") \ 2054 \ 2055 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 2056 "Adaptive size policy maximum GC minor pause time goal in msec") \ 2057 \ 2058 product(uintx, GCTimeRatio, 99, \ 2059 "Adaptive size policy application time to GC time ratio") \ 2060 \ 2061 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 2062 "Adaptive size scale down factor for shrinking") \ 2063 \ 2064 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 2065 "Adaptive size decays the major cost for long major intervals") \ 2066 \ 2067 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 2068 "Time scale over which major costs decay") \ 2069 \ 2070 product(uintx, MinSurvivorRatio, 3, \ 2071 "Minimum ratio of young generation/survivor space size") \ 2072 \ 2073 product(uintx, InitialSurvivorRatio, 8, \ 2074 "Initial ratio of eden/survivor space size") \ 2075 \ 2076 product(uintx, BaseFootPrintEstimate, 256*M, \ 2077 "Estimate of footprint other than Java Heap") \ 2078 \ 2079 product(bool, UseGCOverheadLimit, true, \ 2080 "Use policy to limit of proportion of time spent in GC " \ 2081 "before an OutOfMemory error is thrown") \ 2082 \ 2083 product(uintx, GCTimeLimit, 98, \ 2084 "Limit of proportion of time spent in GC before an OutOfMemory" \ 2085 "error is thrown (used with GCHeapFreeLimit)") \ 2086 \ 2087 product(uintx, GCHeapFreeLimit, 2, \ 2088 "Minimum percentage of free space after a full GC before an " \ 2089 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 2090 \ 2091 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 2092 "Number of consecutive collections before gc time limit fires") \ 2093 \ 2094 product(bool, PrintAdaptiveSizePolicy, false, \ 2095 "Print information about AdaptiveSizePolicy") \ 2096 \ 2097 product(intx, PrefetchCopyIntervalInBytes, -1, \ 2098 "How far ahead to prefetch destination area (<= 0 means off)") \ 2099 \ 2100 product(intx, PrefetchScanIntervalInBytes, -1, \ 2101 "How far ahead to prefetch scan area (<= 0 means off)") \ 2102 \ 2103 product(intx, PrefetchFieldsAhead, -1, \ 2104 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 2105 \ 2106 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 2107 "Verify system before exiting") \ 2108 \ 2109 diagnostic(bool, VerifyBeforeGC, false, \ 2110 "Verify memory system before GC") \ 2111 \ 2112 diagnostic(bool, VerifyAfterGC, false, \ 2113 "Verify memory system after GC") \ 2114 \ 2115 diagnostic(bool, VerifyDuringGC, false, \ 2116 "Verify memory system during GC (between phases)") \ 2117 \ 2118 diagnostic(bool, GCParallelVerificationEnabled, true, \ 2119 "Enable parallel memory system verification") \ 2120 \ 2121 diagnostic(bool, DeferInitialCardMark, false, \ 2122 "When +ReduceInitialCardMarks, explicitly defer any that " \ 2123 "may arise from new_pre_store_barrier") \ 2124 \ 2125 diagnostic(bool, VerifyRememberedSets, false, \ 2126 "Verify GC remembered sets") \ 2127 \ 2128 diagnostic(bool, VerifyObjectStartArray, true, \ 2129 "Verify GC object start array if verify before/after") \ 2130 \ 2131 product(bool, DisableExplicitGC, false, \ 2132 "Tells whether calling System.gc() does a full GC") \ 2133 \ 2134 notproduct(bool, CheckMemoryInitialization, false, \ 2135 "Checks memory initialization") \ 2136 \ 2137 product(bool, CollectGen0First, false, \ 2138 "Collect youngest generation before each full GC") \ 2139 \ 2140 diagnostic(bool, BindCMSThreadToCPU, false, \ 2141 "Bind CMS Thread to CPU if possible") \ 2142 \ 2143 diagnostic(uintx, CPUForCMSThread, 0, \ 2144 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 2145 \ 2146 product(bool, BindGCTaskThreadsToCPUs, false, \ 2147 "Bind GCTaskThreads to CPUs if possible") \ 2148 \ 2149 product(bool, UseGCTaskAffinity, false, \ 2150 "Use worker affinity when asking for GCTasks") \ 2151 \ 2152 product(uintx, ProcessDistributionStride, 4, \ 2153 "Stride through processors when distributing processes") \ 2154 \ 2155 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 2156 "number of times the coordinator GC thread will sleep while " \ 2157 "yielding before giving up and resuming GC") \ 2158 \ 2159 product(uintx, CMSYieldSleepCount, 0, \ 2160 "number of times a GC thread (minus the coordinator) " \ 2161 "will sleep while yielding before giving up and resuming GC") \ 2162 \ 2163 /* gc tracing */ \ 2164 manageable(bool, PrintGC, false, \ 2165 "Print message at garbage collect") \ 2166 \ 2167 manageable(bool, PrintGCDetails, false, \ 2168 "Print more details at garbage collect") \ 2169 \ 2170 manageable(bool, PrintGCDateStamps, false, \ 2171 "Print date stamps at garbage collect") \ 2172 \ 2173 manageable(bool, PrintGCTimeStamps, false, \ 2174 "Print timestamps at garbage collect") \ 2175 \ 2176 product(bool, PrintGCTaskTimeStamps, false, \ 2177 "Print timestamps for individual gc worker thread tasks") \ 2178 \ 2179 develop(intx, ConcGCYieldTimeout, 0, \ 2180 "If non-zero, assert that GC threads yield within this # of ms.") \ 2181 \ 2182 notproduct(bool, TraceMarkSweep, false, \ 2183 "Trace mark sweep") \ 2184 \ 2185 product(bool, PrintReferenceGC, false, \ 2186 "Print times spent handling reference objects during GC " \ 2187 " (enabled only when PrintGCDetails)") \ 2188 \ 2189 develop(bool, TraceReferenceGC, false, \ 2190 "Trace handling of soft/weak/final/phantom references") \ 2191 \ 2192 develop(bool, TraceFinalizerRegistration, false, \ 2193 "Trace registration of final references") \ 2194 \ 2195 notproduct(bool, TraceScavenge, false, \ 2196 "Trace scavenge") \ 2197 \ 2198 product_rw(bool, TraceClassLoading, false, \ 2199 "Trace all classes loaded") \ 2200 \ 2201 product(bool, TraceClassLoadingPreorder, false, \ 2202 "Trace all classes loaded in order referenced (not loaded)") \ 2203 \ 2204 product_rw(bool, TraceClassUnloading, false, \ 2205 "Trace unloading of classes") \ 2206 \ 2207 product_rw(bool, TraceLoaderConstraints, false, \ 2208 "Trace loader constraints") \ 2209 \ 2210 develop(bool, TraceClassLoaderData, false, \ 2211 "Trace class loader loader_data lifetime") \ 2212 \ 2213 product(uintx, InitialBootClassLoaderMetaspaceSize, \ 2214 NOT_LP64(2200*K) LP64_ONLY(4*M), \ 2215 "Initial size of the boot class loader data metaspace") \ 2216 \ 2217 product(bool, TraceGen0Time, false, \ 2218 "Trace accumulated time for Gen 0 collection") \ 2219 \ 2220 product(bool, TraceGen1Time, false, \ 2221 "Trace accumulated time for Gen 1 collection") \ 2222 \ 2223 product(bool, PrintTenuringDistribution, false, \ 2224 "Print tenuring age information") \ 2225 \ 2226 product_rw(bool, PrintHeapAtGC, false, \ 2227 "Print heap layout before and after each GC") \ 2228 \ 2229 product_rw(bool, PrintHeapAtGCExtended, false, \ 2230 "Prints extended information about the layout of the heap " \ 2231 "when -XX:+PrintHeapAtGC is set") \ 2232 \ 2233 product(bool, PrintHeapAtSIGBREAK, true, \ 2234 "Print heap layout in response to SIGBREAK") \ 2235 \ 2236 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 2237 "Print a class histogram before any major stop-world GC") \ 2238 \ 2239 manageable(bool, PrintClassHistogramAfterFullGC, false, \ 2240 "Print a class histogram after any major stop-world GC") \ 2241 \ 2242 manageable(bool, PrintClassHistogram, false, \ 2243 "Print a histogram of class instances") \ 2244 \ 2245 develop(bool, TraceWorkGang, false, \ 2246 "Trace activities of work gangs") \ 2247 \ 2248 product(bool, TraceParallelOldGCTasks, false, \ 2249 "Trace multithreaded GC activity") \ 2250 \ 2251 develop(bool, TraceBlockOffsetTable, false, \ 2252 "Print BlockOffsetTable maps") \ 2253 \ 2254 develop(bool, TraceCardTableModRefBS, false, \ 2255 "Print CardTableModRefBS maps") \ 2256 \ 2257 develop(bool, TraceGCTaskManager, false, \ 2258 "Trace actions of the GC task manager") \ 2259 \ 2260 develop(bool, TraceGCTaskQueue, false, \ 2261 "Trace actions of the GC task queues") \ 2262 \ 2263 diagnostic(bool, TraceGCTaskThread, false, \ 2264 "Trace actions of the GC task threads") \ 2265 \ 2266 product(bool, PrintParallelOldGCPhaseTimes, false, \ 2267 "Print the time taken by each parallel old gc phase." \ 2268 "PrintGCDetails must also be enabled.") \ 2269 \ 2270 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2271 "Trace parallel old gc marking phase") \ 2272 \ 2273 develop(bool, TraceParallelOldGCSummaryPhase, false, \ 2274 "Trace parallel old gc summary phase") \ 2275 \ 2276 develop(bool, TraceParallelOldGCCompactionPhase, false, \ 2277 "Trace parallel old gc compaction phase") \ 2278 \ 2279 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2280 "Trace parallel old gc dense prefix computation") \ 2281 \ 2282 develop(bool, IgnoreLibthreadGPFault, false, \ 2283 "Suppress workaround for libthread GP fault") \ 2284 \ 2285 product(bool, PrintJNIGCStalls, false, \ 2286 "Print diagnostic message when GC is stalled" \ 2287 "by JNI critical section") \ 2288 \ 2289 /* GC log rotation setting */ \ 2290 \ 2291 product(bool, UseGCLogFileRotation, false, \ 2292 "Prevent large gclog file for long running app. " \ 2293 "Requires -Xloggc:<filename>") \ 2294 \ 2295 product(uintx, NumberOfGCLogFiles, 0, \ 2296 "Number of gclog files in rotation, " \ 2297 "Default: 0, no rotation") \ 2298 \ 2299 product(uintx, GCLogFileSize, 0, \ 2300 "GC log file size, Default: 0 bytes, no rotation " \ 2301 "Only valid with UseGCLogFileRotation") \ 2302 \ 2303 /* JVMTI heap profiling */ \ 2304 \ 2305 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2306 "Trace JVMTI object tagging calls") \ 2307 \ 2308 diagnostic(bool, VerifyBeforeIteration, false, \ 2309 "Verify memory system before JVMTI iteration") \ 2310 \ 2311 /* compiler interface */ \ 2312 \ 2313 develop(bool, CIPrintCompilerName, false, \ 2314 "when CIPrint is active, print the name of the active compiler") \ 2315 \ 2316 develop(bool, CIPrintCompileQueue, false, \ 2317 "display the contents of the compile queue whenever a " \ 2318 "compilation is enqueued") \ 2319 \ 2320 develop(bool, CIPrintRequests, false, \ 2321 "display every request for compilation") \ 2322 \ 2323 product(bool, CITime, false, \ 2324 "collect timing information for compilation") \ 2325 \ 2326 develop(bool, CITimeEach, false, \ 2327 "display timing information after each successful compilation") \ 2328 \ 2329 develop(bool, CICountOSR, false, \ 2330 "use a separate counter when assigning ids to osr compilations") \ 2331 \ 2332 develop(bool, CICompileNatives, true, \ 2333 "compile native methods if supported by the compiler") \ 2334 \ 2335 develop_pd(bool, CICompileOSR, \ 2336 "compile on stack replacement methods if supported by the " \ 2337 "compiler") \ 2338 \ 2339 develop(bool, CIPrintMethodCodes, false, \ 2340 "print method bytecodes of the compiled code") \ 2341 \ 2342 develop(bool, CIPrintTypeFlow, false, \ 2343 "print the results of ciTypeFlow analysis") \ 2344 \ 2345 develop(bool, CITraceTypeFlow, false, \ 2346 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2347 \ 2348 develop(intx, OSROnlyBCI, -1, \ 2349 "OSR only at this bci. Negative values mean exclude that bci") \ 2350 \ 2351 /* compiler */ \ 2352 \ 2353 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2354 "Number of compiler threads to run") \ 2355 \ 2356 product(intx, CompilationPolicyChoice, 0, \ 2357 "which compilation policy (0/1)") \ 2358 \ 2359 develop(bool, UseStackBanging, true, \ 2360 "use stack banging for stack overflow checks (required for " \ 2361 "proper StackOverflow handling; disable only to measure cost " \ 2362 "of stackbanging)") \ 2363 \ 2364 develop(bool, UseStrictFP, true, \ 2365 "use strict fp if modifier strictfp is set") \ 2366 \ 2367 develop(bool, GenerateSynchronizationCode, true, \ 2368 "generate locking/unlocking code for synchronized methods and " \ 2369 "monitors") \ 2370 \ 2371 develop(bool, GenerateCompilerNullChecks, true, \ 2372 "Generate explicit null checks for loads/stores/calls") \ 2373 \ 2374 develop(bool, GenerateRangeChecks, true, \ 2375 "Generate range checks for array accesses") \ 2376 \ 2377 develop_pd(bool, ImplicitNullChecks, \ 2378 "generate code for implicit null checks") \ 2379 \ 2380 product(bool, PrintSafepointStatistics, false, \ 2381 "print statistics about safepoint synchronization") \ 2382 \ 2383 product(intx, PrintSafepointStatisticsCount, 300, \ 2384 "total number of safepoint statistics collected " \ 2385 "before printing them out") \ 2386 \ 2387 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2388 "print safepoint statistics only when safepoint takes" \ 2389 " more than PrintSafepointSatisticsTimeout in millis") \ 2390 \ 2391 product(bool, TraceSafepointCleanupTime, false, \ 2392 "print the break down of clean up tasks performed during" \ 2393 " safepoint") \ 2394 \ 2395 product(bool, Inline, true, \ 2396 "enable inlining") \ 2397 \ 2398 product(bool, ClipInlining, true, \ 2399 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2400 \ 2401 develop(bool, UseCHA, true, \ 2402 "enable CHA") \ 2403 \ 2404 product(bool, UseTypeProfile, true, \ 2405 "Check interpreter profile for historically monomorphic calls") \ 2406 \ 2407 notproduct(bool, TimeCompiler, false, \ 2408 "time the compiler") \ 2409 \ 2410 diagnostic(bool, PrintInlining, false, \ 2411 "prints inlining optimizations") \ 2412 \ 2413 product(bool, UsePopCountInstruction, false, \ 2414 "Use population count instruction") \ 2415 \ 2416 develop(bool, EagerInitialization, false, \ 2417 "Eagerly initialize classes if possible") \ 2418 \ 2419 develop(bool, TraceMethodReplacement, false, \ 2420 "Print when methods are replaced do to recompilation") \ 2421 \ 2422 develop(bool, PrintMethodFlushing, false, \ 2423 "print the nmethods being flushed") \ 2424 \ 2425 develop(bool, UseRelocIndex, false, \ 2426 "use an index to speed random access to relocations") \ 2427 \ 2428 develop(bool, StressCodeBuffers, false, \ 2429 "Exercise code buffer expansion and other rare state changes") \ 2430 \ 2431 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2432 "Generate extra debugging info for non-safepoints in nmethods") \ 2433 \ 2434 product(bool, PrintVMOptions, false, \ 2435 "Print flags that appeared on the command line") \ 2436 \ 2437 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2438 "Ignore unrecognized VM options") \ 2439 \ 2440 product(bool, PrintCommandLineFlags, false, \ 2441 "Print flags specified on command line or set by ergonomics") \ 2442 \ 2443 product(bool, PrintFlagsInitial, false, \ 2444 "Print all VM flags before argument processing and exit VM") \ 2445 \ 2446 product(bool, PrintFlagsFinal, false, \ 2447 "Print all VM flags after argument and ergonomic processing") \ 2448 \ 2449 notproduct(bool, PrintFlagsWithComments, false, \ 2450 "Print all VM flags with default values and descriptions and exit")\ 2451 \ 2452 diagnostic(bool, SerializeVMOutput, true, \ 2453 "Use a mutex to serialize output to tty and hotspot.log") \ 2454 \ 2455 diagnostic(bool, DisplayVMOutput, true, \ 2456 "Display all VM output on the tty, independently of LogVMOutput") \ 2457 \ 2458 diagnostic(bool, LogVMOutput, trueInDebug, \ 2459 "Save VM output to hotspot.log, or to LogFile") \ 2460 \ 2461 diagnostic(ccstr, LogFile, NULL, \ 2462 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ 2463 \ 2464 product(ccstr, ErrorFile, NULL, \ 2465 "If an error occurs, save the error data to this file " \ 2466 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2467 \ 2468 product(bool, DisplayVMOutputToStderr, false, \ 2469 "If DisplayVMOutput is true, display all VM output to stderr") \ 2470 \ 2471 product(bool, DisplayVMOutputToStdout, false, \ 2472 "If DisplayVMOutput is true, display all VM output to stdout") \ 2473 \ 2474 product(bool, UseHeavyMonitors, false, \ 2475 "use heavyweight instead of lightweight Java monitors") \ 2476 \ 2477 product(bool, PrintStringTableStatistics, false, \ 2478 "print statistics about the StringTable and SymbolTable") \ 2479 \ 2480 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2481 "print histogram of the symbol table") \ 2482 \ 2483 notproduct(bool, ExitVMOnVerifyError, false, \ 2484 "standard exit from VM if bytecode verify error " \ 2485 "(only in debug mode)") \ 2486 \ 2487 notproduct(ccstr, AbortVMOnException, NULL, \ 2488 "Call fatal if this exception is thrown. Example: " \ 2489 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2490 \ 2491 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ 2492 "Call fatal if the exception pointed by AbortVMOnException " \ 2493 "has this message.") \ 2494 \ 2495 develop(bool, DebugVtables, false, \ 2496 "add debugging code to vtable dispatch") \ 2497 \ 2498 develop(bool, PrintVtables, false, \ 2499 "print vtables when printing klass") \ 2500 \ 2501 notproduct(bool, PrintVtableStats, false, \ 2502 "print vtables stats at end of run") \ 2503 \ 2504 develop(bool, TraceCreateZombies, false, \ 2505 "trace creation of zombie nmethods") \ 2506 \ 2507 notproduct(bool, IgnoreLockingAssertions, false, \ 2508 "disable locking assertions (for speed)") \ 2509 \ 2510 product(bool, RangeCheckElimination, true, \ 2511 "Split loop iterations to eliminate range checks") \ 2512 \ 2513 develop_pd(bool, UncommonNullCast, \ 2514 "track occurrences of null in casts; adjust compiler tactics") \ 2515 \ 2516 develop(bool, TypeProfileCasts, true, \ 2517 "treat casts like calls for purposes of type profiling") \ 2518 \ 2519 develop(bool, DelayCompilationDuringStartup, true, \ 2520 "Delay invoking the compiler until main application class is " \ 2521 "loaded") \ 2522 \ 2523 develop(bool, CompileTheWorld, false, \ 2524 "Compile all methods in all classes in bootstrap class path " \ 2525 "(stress test)") \ 2526 \ 2527 develop(bool, CompileTheWorldPreloadClasses, true, \ 2528 "Preload all classes used by a class before start loading") \ 2529 \ 2530 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ 2531 "Force a safepoint every n compiles so sweeper can keep up") \ 2532 \ 2533 develop(bool, FillDelaySlots, true, \ 2534 "Fill delay slots (on SPARC only)") \ 2535 \ 2536 develop(bool, TimeLivenessAnalysis, false, \ 2537 "Time computation of bytecode liveness analysis") \ 2538 \ 2539 develop(bool, TraceLivenessGen, false, \ 2540 "Trace the generation of liveness analysis information") \ 2541 \ 2542 notproduct(bool, TraceLivenessQuery, false, \ 2543 "Trace queries of liveness analysis information") \ 2544 \ 2545 notproduct(bool, CollectIndexSetStatistics, false, \ 2546 "Collect information about IndexSets") \ 2547 \ 2548 develop(bool, UseLoopSafepoints, true, \ 2549 "Generate Safepoint nodes in every loop") \ 2550 \ 2551 develop(intx, FastAllocateSizeLimit, 128*K, \ 2552 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2553 "Inline allocations larger than this in doublewords must go slow")\ 2554 \ 2555 product(bool, AggressiveOpts, false, \ 2556 "Enable aggressive optimizations - see arguments.cpp") \ 2557 \ 2558 product(bool, UseStringCache, false, \ 2559 "Enable String cache capabilities on String.java") \ 2560 \ 2561 /* statistics */ \ 2562 develop(bool, CountCompiledCalls, false, \ 2563 "counts method invocations") \ 2564 \ 2565 notproduct(bool, CountRuntimeCalls, false, \ 2566 "counts VM runtime calls") \ 2567 \ 2568 develop(bool, CountJNICalls, false, \ 2569 "counts jni method invocations") \ 2570 \ 2571 notproduct(bool, CountJVMCalls, false, \ 2572 "counts jvm method invocations") \ 2573 \ 2574 notproduct(bool, CountRemovableExceptions, false, \ 2575 "count exceptions that could be replaced by branches due to " \ 2576 "inlining") \ 2577 \ 2578 notproduct(bool, ICMissHistogram, false, \ 2579 "produce histogram of IC misses") \ 2580 \ 2581 notproduct(bool, PrintClassStatistics, false, \ 2582 "prints class statistics at end of run") \ 2583 \ 2584 notproduct(bool, PrintMethodStatistics, false, \ 2585 "prints method statistics at end of run") \ 2586 \ 2587 /* interpreter */ \ 2588 develop(bool, ClearInterpreterLocals, false, \ 2589 "Always clear local variables of interpreter activations upon " \ 2590 "entry") \ 2591 \ 2592 product_pd(bool, RewriteBytecodes, \ 2593 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2594 \ 2595 product_pd(bool, RewriteFrequentPairs, \ 2596 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2597 \ 2598 diagnostic(bool, PrintInterpreter, false, \ 2599 "Prints the generated interpreter code") \ 2600 \ 2601 product(bool, UseInterpreter, true, \ 2602 "Use interpreter for non-compiled methods") \ 2603 \ 2604 develop(bool, UseFastSignatureHandlers, true, \ 2605 "Use fast signature handlers for native calls") \ 2606 \ 2607 product(bool, UseLoopCounter, true, \ 2608 "Increment invocation counter on backward branch") \ 2609 \ 2610 product(bool, UseFastEmptyMethods, true, \ 2611 "Use fast method entry code for empty methods") \ 2612 \ 2613 product(bool, UseFastAccessorMethods, true, \ 2614 "Use fast method entry code for accessor methods") \ 2615 \ 2616 product_pd(bool, UseOnStackReplacement, \ 2617 "Use on stack replacement, calls runtime if invoc. counter " \ 2618 "overflows in loop") \ 2619 \ 2620 notproduct(bool, TraceOnStackReplacement, false, \ 2621 "Trace on stack replacement") \ 2622 \ 2623 product_pd(bool, PreferInterpreterNativeStubs, \ 2624 "Use always interpreter stubs for native methods invoked via " \ 2625 "interpreter") \ 2626 \ 2627 develop(bool, CountBytecodes, false, \ 2628 "Count number of bytecodes executed") \ 2629 \ 2630 develop(bool, PrintBytecodeHistogram, false, \ 2631 "Print histogram of the executed bytecodes") \ 2632 \ 2633 develop(bool, PrintBytecodePairHistogram, false, \ 2634 "Print histogram of the executed bytecode pairs") \ 2635 \ 2636 diagnostic(bool, PrintSignatureHandlers, false, \ 2637 "Print code generated for native method signature handlers") \ 2638 \ 2639 develop(bool, VerifyOops, false, \ 2640 "Do plausibility checks for oops") \ 2641 \ 2642 develop(bool, CheckUnhandledOops, false, \ 2643 "Check for unhandled oops in VM code") \ 2644 \ 2645 develop(bool, VerifyJNIFields, trueInDebug, \ 2646 "Verify jfieldIDs for instance fields") \ 2647 \ 2648 notproduct(bool, VerifyJNIEnvThread, false, \ 2649 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2650 "from JNI") \ 2651 \ 2652 develop(bool, VerifyFPU, false, \ 2653 "Verify FPU state (check for NaN's, etc.)") \ 2654 \ 2655 develop(bool, VerifyThread, false, \ 2656 "Watch the thread register for corruption (SPARC only)") \ 2657 \ 2658 develop(bool, VerifyActivationFrameSize, false, \ 2659 "Verify that activation frame didn't become smaller than its " \ 2660 "minimal size") \ 2661 \ 2662 develop(bool, TraceFrequencyInlining, false, \ 2663 "Trace frequency based inlining") \ 2664 \ 2665 develop_pd(bool, InlineIntrinsics, \ 2666 "Inline intrinsics that can be statically resolved") \ 2667 \ 2668 product_pd(bool, ProfileInterpreter, \ 2669 "Profile at the bytecode level during interpretation") \ 2670 \ 2671 develop_pd(bool, ProfileTraps, \ 2672 "Profile deoptimization traps at the bytecode level") \ 2673 \ 2674 product(intx, ProfileMaturityPercentage, 20, \ 2675 "number of method invocations/branches (expressed as % of " \ 2676 "CompileThreshold) before using the method's profile") \ 2677 \ 2678 develop(bool, PrintMethodData, false, \ 2679 "Print the results of +ProfileInterpreter at end of run") \ 2680 \ 2681 develop(bool, VerifyDataPointer, trueInDebug, \ 2682 "Verify the method data pointer during interpreter profiling") \ 2683 \ 2684 develop(bool, VerifyCompiledCode, false, \ 2685 "Include miscellaneous runtime verifications in nmethod code; " \ 2686 "default off because it disturbs nmethod size heuristics") \ 2687 \ 2688 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 2689 "Manually make GC thread crash then dump java stack trace; " \ 2690 "Test only") \ 2691 \ 2692 /* compilation */ \ 2693 product(bool, UseCompiler, true, \ 2694 "use compilation") \ 2695 \ 2696 develop(bool, TraceCompilationPolicy, false, \ 2697 "Trace compilation policy") \ 2698 \ 2699 develop(bool, TimeCompilationPolicy, false, \ 2700 "Time the compilation policy") \ 2701 \ 2702 product(bool, UseCounterDecay, true, \ 2703 "adjust recompilation counters") \ 2704 \ 2705 develop(intx, CounterHalfLifeTime, 30, \ 2706 "half-life time of invocation counters (in secs)") \ 2707 \ 2708 develop(intx, CounterDecayMinIntervalLength, 500, \ 2709 "Min. ms. between invocation of CounterDecay") \ 2710 \ 2711 product(bool, AlwaysCompileLoopMethods, false, \ 2712 "when using recompilation, never interpret methods " \ 2713 "containing loops") \ 2714 \ 2715 product(bool, DontCompileHugeMethods, true, \ 2716 "don't compile methods > HugeMethodLimit") \ 2717 \ 2718 /* Bytecode escape analysis estimation. */ \ 2719 product(bool, EstimateArgEscape, true, \ 2720 "Analyze bytecodes to estimate escape state of arguments") \ 2721 \ 2722 product(intx, BCEATraceLevel, 0, \ 2723 "How much tracing to do of bytecode escape analysis estimates") \ 2724 \ 2725 product(intx, MaxBCEAEstimateLevel, 5, \ 2726 "Maximum number of nested calls that are analyzed by BC EA.") \ 2727 \ 2728 product(intx, MaxBCEAEstimateSize, 150, \ 2729 "Maximum bytecode size of a method to be analyzed by BC EA.") \ 2730 \ 2731 product(intx, AllocatePrefetchStyle, 1, \ 2732 "0 = no prefetch, " \ 2733 "1 = prefetch instructions for each allocation, " \ 2734 "2 = use TLAB watermark to gate allocation prefetch, " \ 2735 "3 = use BIS instruction on Sparc for allocation prefetch") \ 2736 \ 2737 product(intx, AllocatePrefetchDistance, -1, \ 2738 "Distance to prefetch ahead of allocation pointer") \ 2739 \ 2740 product(intx, AllocatePrefetchLines, 3, \ 2741 "Number of lines to prefetch ahead of array allocation pointer") \ 2742 \ 2743 product(intx, AllocateInstancePrefetchLines, 1, \ 2744 "Number of lines to prefetch ahead of instance allocation pointer") \ 2745 \ 2746 product(intx, AllocatePrefetchStepSize, 16, \ 2747 "Step size in bytes of sequential prefetch instructions") \ 2748 \ 2749 product(intx, AllocatePrefetchInstr, 0, \ 2750 "Prefetch instruction to prefetch ahead of allocation pointer") \ 2751 \ 2752 /* deoptimization */ \ 2753 develop(bool, TraceDeoptimization, false, \ 2754 "Trace deoptimization") \ 2755 \ 2756 develop(bool, DebugDeoptimization, false, \ 2757 "Tracing various information while debugging deoptimization") \ 2758 \ 2759 product(intx, SelfDestructTimer, 0, \ 2760 "Will cause VM to terminate after a given time (in minutes) " \ 2761 "(0 means off)") \ 2762 \ 2763 product(intx, MaxJavaStackTraceDepth, 1024, \ 2764 "Max. no. of lines in the stack trace for Java exceptions " \ 2765 "(0 means all)") \ 2766 \ 2767 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 2768 "Guarantee a safepoint (at least) every so many milliseconds " \ 2769 "(0 means none)")) \ 2770 \ 2771 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ 2772 "Guarantee a safepoint (at least) every so many milliseconds " \ 2773 "(0 means none)")) \ 2774 \ 2775 product(intx, SafepointTimeoutDelay, 10000, \ 2776 "Delay in milliseconds for option SafepointTimeout") \ 2777 \ 2778 product(intx, NmethodSweepFraction, 16, \ 2779 "Number of invocations of sweeper to cover all nmethods") \ 2780 \ 2781 product(intx, NmethodSweepCheckInterval, 5, \ 2782 "Compilers wake up every n seconds to possibly sweep nmethods") \ 2783 \ 2784 notproduct(bool, LogSweeper, false, \ 2785 "Keep a ring buffer of sweeper activity") \ 2786 \ 2787 notproduct(intx, SweeperLogEntries, 1024, \ 2788 "Number of records in the ring buffer of sweeper activity") \ 2789 \ 2790 notproduct(intx, MemProfilingInterval, 500, \ 2791 "Time between each invocation of the MemProfiler") \ 2792 \ 2793 develop(intx, MallocCatchPtr, -1, \ 2794 "Hit breakpoint when mallocing/freeing this pointer") \ 2795 \ 2796 notproduct(intx, AssertRepeat, 1, \ 2797 "number of times to evaluate expression in assert " \ 2798 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ 2799 \ 2800 notproduct(ccstrlist, SuppressErrorAt, "", \ 2801 "List of assertions (file:line) to muzzle") \ 2802 \ 2803 notproduct(uintx, HandleAllocationLimit, 1024, \ 2804 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 2805 "is used") \ 2806 \ 2807 develop(uintx, TotalHandleAllocationLimit, 1024, \ 2808 "Threshold for total handle allocation when " \ 2809 "+TraceHandleAllocation is used") \ 2810 \ 2811 develop(intx, StackPrintLimit, 100, \ 2812 "number of stack frames to print in VM-level stack dump") \ 2813 \ 2814 notproduct(intx, MaxElementPrintSize, 256, \ 2815 "maximum number of elements to print") \ 2816 \ 2817 notproduct(intx, MaxSubklassPrintSize, 4, \ 2818 "maximum number of subklasses to print when printing klass") \ 2819 \ 2820 product(intx, MaxInlineLevel, 9, \ 2821 "maximum number of nested calls that are inlined") \ 2822 \ 2823 product(intx, MaxRecursiveInlineLevel, 1, \ 2824 "maximum number of nested recursive calls that are inlined") \ 2825 \ 2826 product_pd(intx, InlineSmallCode, \ 2827 "Only inline already compiled methods if their code size is " \ 2828 "less than this") \ 2829 \ 2830 product(intx, MaxInlineSize, 35, \ 2831 "maximum bytecode size of a method to be inlined") \ 2832 \ 2833 product_pd(intx, FreqInlineSize, \ 2834 "maximum bytecode size of a frequent method to be inlined") \ 2835 \ 2836 product(intx, MaxTrivialSize, 6, \ 2837 "maximum bytecode size of a trivial method to be inlined") \ 2838 \ 2839 product(intx, MinInliningThreshold, 250, \ 2840 "min. invocation count a method needs to have to be inlined") \ 2841 \ 2842 develop(intx, MethodHistogramCutoff, 100, \ 2843 "cutoff value for method invoc. histogram (+CountCalls)") \ 2844 \ 2845 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2846 "# of interpreted methods to show in profile") \ 2847 \ 2848 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 2849 "# of compiled methods to show in profile") \ 2850 \ 2851 develop(intx, ProfilerNumberOfStubMethods, 25, \ 2852 "# of stub methods to show in profile") \ 2853 \ 2854 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2855 "# of runtime stub nodes to show in profile") \ 2856 \ 2857 product(intx, ProfileIntervalsTicks, 100, \ 2858 "# of ticks between printing of interval profile " \ 2859 "(+ProfileIntervals)") \ 2860 \ 2861 notproduct(intx, ScavengeALotInterval, 1, \ 2862 "Interval between which scavenge will occur with +ScavengeALot") \ 2863 \ 2864 notproduct(intx, FullGCALotInterval, 1, \ 2865 "Interval between which full gc will occur with +FullGCALot") \ 2866 \ 2867 notproduct(intx, FullGCALotStart, 0, \ 2868 "For which invocation to start FullGCAlot") \ 2869 \ 2870 notproduct(intx, FullGCALotDummies, 32*K, \ 2871 "Dummy object allocated with +FullGCALot, forcing all objects " \ 2872 "to move") \ 2873 \ 2874 develop(intx, DontYieldALotInterval, 10, \ 2875 "Interval between which yields will be dropped (milliseconds)") \ 2876 \ 2877 develop(intx, MinSleepInterval, 1, \ 2878 "Minimum sleep() interval (milliseconds) when " \ 2879 "ConvertSleepToYield is off (used for SOLARIS)") \ 2880 \ 2881 develop(intx, ProfilerPCTickThreshold, 15, \ 2882 "Number of ticks in a PC buckets to be a hotspot") \ 2883 \ 2884 notproduct(intx, DeoptimizeALotInterval, 5, \ 2885 "Number of exits until DeoptimizeALot kicks in") \ 2886 \ 2887 notproduct(intx, ZombieALotInterval, 5, \ 2888 "Number of exits until ZombieALot kicks in") \ 2889 \ 2890 develop(bool, StressNonEntrant, false, \ 2891 "Mark nmethods non-entrant at registration") \ 2892 \ 2893 diagnostic(intx, MallocVerifyInterval, 0, \ 2894 "if non-zero, verify C heap after every N calls to " \ 2895 "malloc/realloc/free") \ 2896 \ 2897 diagnostic(intx, MallocVerifyStart, 0, \ 2898 "if non-zero, start verifying C heap after Nth call to " \ 2899 "malloc/realloc/free") \ 2900 \ 2901 product(intx, TypeProfileWidth, 2, \ 2902 "number of receiver types to record in call/cast profile") \ 2903 \ 2904 develop(intx, BciProfileWidth, 2, \ 2905 "number of return bci's to record in ret profile") \ 2906 \ 2907 product(intx, PerMethodRecompilationCutoff, 400, \ 2908 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 2909 \ 2910 product(intx, PerBytecodeRecompilationCutoff, 200, \ 2911 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 2912 \ 2913 product(intx, PerMethodTrapLimit, 100, \ 2914 "Limit on traps (of one kind) in a method (includes inlines)") \ 2915 \ 2916 product(intx, PerBytecodeTrapLimit, 4, \ 2917 "Limit on traps (of one kind) at a particular BCI") \ 2918 \ 2919 develop(intx, InlineFrequencyRatio, 20, \ 2920 "Ratio of call site execution to caller method invocation") \ 2921 \ 2922 develop_pd(intx, InlineFrequencyCount, \ 2923 "Count of call site execution necessary to trigger frequent " \ 2924 "inlining") \ 2925 \ 2926 develop(intx, InlineThrowCount, 50, \ 2927 "Force inlining of interpreted methods that throw this often") \ 2928 \ 2929 develop(intx, InlineThrowMaxSize, 200, \ 2930 "Force inlining of throwing methods smaller than this") \ 2931 \ 2932 develop(intx, ProfilerNodeSize, 1024, \ 2933 "Size in K to allocate for the Profile Nodes of each thread") \ 2934 \ 2935 product_pd(intx, PreInflateSpin, \ 2936 "Number of times to spin wait before inflation") \ 2937 \ 2938 /* gc parameters */ \ 2939 product(uintx, InitialHeapSize, 0, \ 2940 "Initial heap size (in bytes); zero means OldSize + NewSize") \ 2941 \ 2942 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ 2943 "Maximum heap size (in bytes)") \ 2944 \ 2945 product(uintx, OldSize, ScaleForWordSize(4*M), \ 2946 "Initial tenured generation size (in bytes)") \ 2947 \ 2948 product(uintx, NewSize, ScaleForWordSize(1*M), \ 2949 "Initial new generation size (in bytes)") \ 2950 \ 2951 product(uintx, MaxNewSize, max_uintx, \ 2952 "Maximum new generation size (in bytes), max_uintx means set " \ 2953 "ergonomically") \ 2954 \ 2955 product(uintx, PretenureSizeThreshold, 0, \ 2956 "Maximum size in bytes of objects allocated in DefNew " \ 2957 "generation; zero means no maximum") \ 2958 \ 2959 product(uintx, TLABSize, 0, \ 2960 "Starting TLAB size (in bytes); zero means set ergonomically") \ 2961 \ 2962 product(uintx, MinTLABSize, 2*K, \ 2963 "Minimum allowed TLAB size (in bytes)") \ 2964 \ 2965 product(uintx, TLABAllocationWeight, 35, \ 2966 "Allocation averaging weight") \ 2967 \ 2968 product(uintx, TLABWasteTargetPercent, 1, \ 2969 "Percentage of Eden that can be wasted") \ 2970 \ 2971 product(uintx, TLABRefillWasteFraction, 64, \ 2972 "Max TLAB waste at a refill (internal fragmentation)") \ 2973 \ 2974 product(uintx, TLABWasteIncrement, 4, \ 2975 "Increment allowed waste at slow allocation") \ 2976 \ 2977 product(intx, SurvivorRatio, 8, \ 2978 "Ratio of eden/survivor space size") \ 2979 \ 2980 product(intx, NewRatio, 2, \ 2981 "Ratio of new/old generation sizes") \ 2982 \ 2983 product_pd(uintx, NewSizeThreadIncrease, \ 2984 "Additional size added to desired new generation size per " \ 2985 "non-daemon thread (in bytes)") \ 2986 \ 2987 product_pd(uintx, MetaspaceSize, \ 2988 "Initial size of Metaspaces (in bytes)") \ 2989 \ 2990 product(uintx, MaxMetaspaceSize, max_uintx, \ 2991 "Maximum size of Metaspaces (in bytes)") \ 2992 \ 2993 product(uintx, ClassMetaspaceSize, 2*M, \ 2994 "Maximum size of InstanceKlass area in Metaspace used for " \ 2995 "UseCompressedKlassPointers") \ 2996 \ 2997 product(uintx, MinHeapFreeRatio, 40, \ 2998 "Min percentage of heap free after GC to avoid expansion") \ 2999 \ 3000 product(uintx, MaxHeapFreeRatio, 70, \ 3001 "Max percentage of heap free after GC to avoid shrinking") \ 3002 \ 3003 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 3004 "Number of milliseconds per MB of free space in the heap") \ 3005 \ 3006 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 3007 "Min change in heap space due to GC (in bytes)") \ 3008 \ 3009 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 3010 "Min expansion of permanent heap (in bytes)") \ 3011 \ 3012 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3013 "Max expansion of permanent heap without full GC (in bytes)") \ 3014 \ 3015 product(intx, QueuedAllocationWarningCount, 0, \ 3016 "Number of times an allocation that queues behind a GC " \ 3017 "will retry before printing a warning") \ 3018 \ 3019 diagnostic(uintx, VerifyGCStartAt, 0, \ 3020 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3021 \ 3022 diagnostic(intx, VerifyGCLevel, 0, \ 3023 "Generation level at which to start +VerifyBefore/AfterGC") \ 3024 \ 3025 product(uintx, MaxTenuringThreshold, 15, \ 3026 "Maximum value for tenuring threshold") \ 3027 \ 3028 product(uintx, InitialTenuringThreshold, 7, \ 3029 "Initial value for tenuring threshold") \ 3030 \ 3031 product(intx, TargetSurvivorRatio, 50, \ 3032 "Desired percentage of survivor space used after scavenge") \ 3033 \ 3034 product(uintx, MarkSweepDeadRatio, 5, \ 3035 "Percentage (0-100) of the old gen allowed as dead wood." \ 3036 "Serial mark sweep treats this as both the min and max value." \ 3037 "CMS uses this value only if it falls back to mark sweep." \ 3038 "Par compact uses a variable scale based on the density of the" \ 3039 "generation and treats this as the max value when the heap is" \ 3040 "either completely full or completely empty. Par compact also" \ 3041 "has a smaller default value; see arguments.cpp.") \ 3042 \ 3043 product(intx, MarkSweepAlwaysCompactCount, 4, \ 3044 "How often should we fully compact the heap (ignoring the dead " \ 3045 "space parameters)") \ 3046 \ 3047 product(intx, PrintCMSStatistics, 0, \ 3048 "Statistics for CMS") \ 3049 \ 3050 product(bool, PrintCMSInitiationStatistics, false, \ 3051 "Statistics for initiating a CMS collection") \ 3052 \ 3053 product(intx, PrintFLSStatistics, 0, \ 3054 "Statistics for CMS' FreeListSpace") \ 3055 \ 3056 product(intx, PrintFLSCensus, 0, \ 3057 "Census for CMS' FreeListSpace") \ 3058 \ 3059 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 3060 "Delay in ms between expansion and allocation") \ 3061 \ 3062 develop(uintx, GCWorkerDelayMillis, 0, \ 3063 "Delay in ms in scheduling GC workers") \ 3064 \ 3065 product(intx, DeferThrSuspendLoopCount, 4000, \ 3066 "(Unstable) Number of times to iterate in safepoint loop " \ 3067 " before blocking VM threads ") \ 3068 \ 3069 product(intx, DeferPollingPageLoopCount, -1, \ 3070 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 3071 "before changing safepoint polling page to RO ") \ 3072 \ 3073 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 3074 \ 3075 product(bool, PSChunkLargeArrays, true, \ 3076 "true: process large arrays in chunks") \ 3077 \ 3078 product(uintx, GCDrainStackTargetSize, 64, \ 3079 "how many entries we'll try to leave on the stack during " \ 3080 "parallel GC") \ 3081 \ 3082 /* stack parameters */ \ 3083 product_pd(intx, StackYellowPages, \ 3084 "Number of yellow zone (recoverable overflows) pages") \ 3085 \ 3086 product_pd(intx, StackRedPages, \ 3087 "Number of red zone (unrecoverable overflows) pages") \ 3088 \ 3089 product_pd(intx, StackShadowPages, \ 3090 "Number of shadow zone (for overflow checking) pages" \ 3091 " this should exceed the depth of the VM and native call stack") \ 3092 \ 3093 product_pd(intx, ThreadStackSize, \ 3094 "Thread Stack Size (in Kbytes)") \ 3095 \ 3096 product_pd(intx, VMThreadStackSize, \ 3097 "Non-Java Thread Stack Size (in Kbytes)") \ 3098 \ 3099 product_pd(intx, CompilerThreadStackSize, \ 3100 "Compiler Thread Stack Size (in Kbytes)") \ 3101 \ 3102 develop_pd(uintx, JVMInvokeMethodSlack, \ 3103 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 3104 \ 3105 product(uintx, ThreadSafetyMargin, 50*M, \ 3106 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ 3107 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ 3108 "disable this feature") \ 3109 \ 3110 /* code cache parameters */ \ 3111 develop(uintx, CodeCacheSegmentSize, 64, \ 3112 "Code cache segment size (in bytes) - smallest unit of " \ 3113 "allocation") \ 3114 \ 3115 develop_pd(intx, CodeEntryAlignment, \ 3116 "Code entry alignment for generated code (in bytes)") \ 3117 \ 3118 product_pd(intx, OptoLoopAlignment, \ 3119 "Align inner loops to zero relative to this modulus") \ 3120 \ 3121 product_pd(uintx, InitialCodeCacheSize, \ 3122 "Initial code cache size (in bytes)") \ 3123 \ 3124 product_pd(uintx, ReservedCodeCacheSize, \ 3125 "Reserved code cache size (in bytes) - maximum code cache size") \ 3126 \ 3127 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ 3128 "When less than X space left, we stop compiling.") \ 3129 \ 3130 product_pd(uintx, CodeCacheExpansionSize, \ 3131 "Code cache expansion size (in bytes)") \ 3132 \ 3133 develop_pd(uintx, CodeCacheMinBlockLength, \ 3134 "Minimum number of segments in a code cache block.") \ 3135 \ 3136 notproduct(bool, ExitOnFullCodeCache, false, \ 3137 "Exit the VM if we fill the code cache.") \ 3138 \ 3139 product(bool, UseCodeCacheFlushing, true, \ 3140 "Attempt to clean the code cache before shutting off compiler") \ 3141 \ 3142 product(intx, MinCodeCacheFlushingInterval, 30, \ 3143 "Min number of seconds between code cache cleaning sessions") \ 3144 \ 3145 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ 3146 "When less than X space left, start code cache cleaning") \ 3147 \ 3148 /* interpreter debugging */ \ 3149 develop(intx, BinarySwitchThreshold, 5, \ 3150 "Minimal number of lookupswitch entries for rewriting to binary " \ 3151 "switch") \ 3152 \ 3153 develop(intx, StopInterpreterAt, 0, \ 3154 "Stops interpreter execution at specified bytecode number") \ 3155 \ 3156 develop(intx, TraceBytecodesAt, 0, \ 3157 "Traces bytecodes starting with specified bytecode number") \ 3158 \ 3159 /* compiler interface */ \ 3160 develop(intx, CIStart, 0, \ 3161 "the id of the first compilation to permit") \ 3162 \ 3163 develop(intx, CIStop, -1, \ 3164 "the id of the last compilation to permit") \ 3165 \ 3166 develop(intx, CIStartOSR, 0, \ 3167 "the id of the first osr compilation to permit " \ 3168 "(CICountOSR must be on)") \ 3169 \ 3170 develop(intx, CIStopOSR, -1, \ 3171 "the id of the last osr compilation to permit " \ 3172 "(CICountOSR must be on)") \ 3173 \ 3174 develop(intx, CIBreakAtOSR, -1, \ 3175 "id of osr compilation to break at") \ 3176 \ 3177 develop(intx, CIBreakAt, -1, \ 3178 "id of compilation to break at") \ 3179 \ 3180 product(ccstrlist, CompileOnly, "", \ 3181 "List of methods (pkg/class.name) to restrict compilation to") \ 3182 \ 3183 product(ccstr, CompileCommandFile, NULL, \ 3184 "Read compiler commands from this file [.hotspot_compiler]") \ 3185 \ 3186 product(ccstrlist, CompileCommand, "", \ 3187 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3188 \ 3189 develop(bool, ReplayCompiles, false, \ 3190 "Enable replay of compilations from ReplayDataFile") \ 3191 \ 3192 develop(ccstr, ReplayDataFile, "replay.txt", \ 3193 "file containing compilation replay information") \ 3194 \ 3195 develop(intx, ReplaySuppressInitializers, 2, \ 3196 "Controls handling of class initialization during replay" \ 3197 "0 - don't do anything special" \ 3198 "1 - treat all class initializers as empty" \ 3199 "2 - treat class initializers for application classes as empty" \ 3200 "3 - allow all class initializers to run during bootstrap but" \ 3201 " pretend they are empty after starting replay") \ 3202 \ 3203 develop(bool, ReplayIgnoreInitErrors, false, \ 3204 "Ignore exceptions thrown during initialization for replay") \ 3205 \ 3206 develop(bool, DumpReplayDataOnError, true, \ 3207 "record replay data for crashing compiler threads") \ 3208 \ 3209 product(bool, CICompilerCountPerCPU, false, \ 3210 "1 compiler thread for log(N CPUs)") \ 3211 \ 3212 develop(intx, CIFireOOMAt, -1, \ 3213 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3214 "(non-negative value throws OOM after this many CI accesses " \ 3215 "in each compile)") \ 3216 \ 3217 notproduct(bool, CIObjectFactoryVerify, false, \ 3218 "enable potentially expensive verification in ciObjectFactory") \ 3219 \ 3220 /* Priorities */ \ 3221 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3222 \ 3223 product(intx, ThreadPriorityPolicy, 0, \ 3224 "0 : Normal. "\ 3225 " VM chooses priorities that are appropriate for normal "\ 3226 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3227 " to normal native priority. Java priorities below NORM_PRIORITY"\ 3228 " map to lower native priority values. On Windows applications"\ 3229 " are allowed to use higher native priorities. However, with "\ 3230 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ 3231 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ 3232 " interfere with system threads. On Linux thread priorities "\ 3233 " are ignored because the OS does not support static priority "\ 3234 " in SCHED_OTHER scheduling class which is the only choice for"\ 3235 " non-root, non-realtime applications. "\ 3236 "1 : Aggressive. "\ 3237 " Java thread priorities map over to the entire range of "\ 3238 " native thread priorities. Higher Java thread priorities map "\ 3239 " to higher native thread priorities. This policy should be "\ 3240 " used with care, as sometimes it can cause performance "\ 3241 " degradation in the application and/or the entire system. On "\ 3242 " Linux this policy requires root privilege.") \ 3243 \ 3244 product(bool, ThreadPriorityVerbose, false, \ 3245 "Print priority changes") \ 3246 \ 3247 product(intx, DefaultThreadPriority, -1, \ 3248 "The native priority at which threads run if not elsewhere " \ 3249 "specified (-1 means no change)") \ 3250 \ 3251 product(intx, CompilerThreadPriority, -1, \ 3252 "The native priority at which compiler threads should run " \ 3253 "(-1 means no change)") \ 3254 \ 3255 product(intx, VMThreadPriority, -1, \ 3256 "The native priority at which the VM thread should run " \ 3257 "(-1 means no change)") \ 3258 \ 3259 product(bool, CompilerThreadHintNoPreempt, true, \ 3260 "(Solaris only) Give compiler threads an extra quanta") \ 3261 \ 3262 product(bool, VMThreadHintNoPreempt, false, \ 3263 "(Solaris only) Give VM thread an extra quanta") \ 3264 \ 3265 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3266 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3267 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3268 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3269 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3270 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3271 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3272 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3273 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3274 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ 3275 \ 3276 experimental(bool, UseCriticalJavaThreadPriority, false, \ 3277 "Java thread priority 10 maps to critical scheduling priority") \ 3278 \ 3279 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 3280 "Compiler thread(s) run at critical scheduling priority") \ 3281 \ 3282 experimental(bool, UseCriticalCMSThreadPriority, false, \ 3283 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 3284 \ 3285 /* compiler debugging */ \ 3286 notproduct(intx, CompileTheWorldStartAt, 1, \ 3287 "First class to consider when using +CompileTheWorld") \ 3288 \ 3289 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3290 "Last class to consider when using +CompileTheWorld") \ 3291 \ 3292 develop(intx, NewCodeParameter, 0, \ 3293 "Testing Only: Create a dedicated integer parameter before " \ 3294 "putback") \ 3295 \ 3296 /* new oopmap storage allocation */ \ 3297 develop(intx, MinOopMapAllocation, 8, \ 3298 "Minimum number of OopMap entries in an OopMapSet") \ 3299 \ 3300 /* Background Compilation */ \ 3301 develop(intx, LongCompileThreshold, 50, \ 3302 "Used with +TraceLongCompiles") \ 3303 \ 3304 product(intx, StarvationMonitorInterval, 200, \ 3305 "Pause between each check in ms") \ 3306 \ 3307 /* recompilation */ \ 3308 product_pd(intx, CompileThreshold, \ 3309 "number of interpreted method invocations before (re-)compiling") \ 3310 \ 3311 product_pd(intx, BackEdgeThreshold, \ 3312 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ 3313 \ 3314 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 3315 "Interpreter (tier 0) invocation notification frequency.") \ 3316 \ 3317 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 3318 "C1 without MDO (tier 2) invocation notification frequency.") \ 3319 \ 3320 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 3321 "C1 with MDO profiling (tier 3) invocation notification " \ 3322 "frequency.") \ 3323 \ 3324 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 3325 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 3326 \ 3327 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 3328 "Interpreter (tier 0) invocation notification frequency.") \ 3329 \ 3330 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 3331 "C1 without MDO (tier 2) invocation notification frequency.") \ 3332 \ 3333 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 3334 "C1 with MDO profiling (tier 3) invocation notification " \ 3335 "frequency.") \ 3336 \ 3337 product(intx, Tier2CompileThreshold, 0, \ 3338 "threshold at which tier 2 compilation is invoked") \ 3339 \ 3340 product(intx, Tier2BackEdgeThreshold, 0, \ 3341 "Back edge threshold at which tier 2 compilation is invoked") \ 3342 \ 3343 product(intx, Tier3InvocationThreshold, 200, \ 3344 "Compile if number of method invocations crosses this " \ 3345 "threshold") \ 3346 \ 3347 product(intx, Tier3MinInvocationThreshold, 100, \ 3348 "Minimum invocation to compile at tier 3") \ 3349 \ 3350 product(intx, Tier3CompileThreshold, 2000, \ 3351 "Threshold at which tier 3 compilation is invoked (invocation " \ 3352 "minimum must be satisfied.") \ 3353 \ 3354 product(intx, Tier3BackEdgeThreshold, 60000, \ 3355 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 3356 \ 3357 product(intx, Tier4InvocationThreshold, 5000, \ 3358 "Compile if number of method invocations crosses this " \ 3359 "threshold") \ 3360 \ 3361 product(intx, Tier4MinInvocationThreshold, 600, \ 3362 "Minimum invocation to compile at tier 4") \ 3363 \ 3364 product(intx, Tier4CompileThreshold, 15000, \ 3365 "Threshold at which tier 4 compilation is invoked (invocation " \ 3366 "minimum must be satisfied.") \ 3367 \ 3368 product(intx, Tier4BackEdgeThreshold, 40000, \ 3369 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 3370 \ 3371 product(intx, Tier3DelayOn, 5, \ 3372 "If C2 queue size grows over this amount per compiler thread " \ 3373 "stop compiling at tier 3 and start compiling at tier 2") \ 3374 \ 3375 product(intx, Tier3DelayOff, 2, \ 3376 "If C2 queue size is less than this amount per compiler thread " \ 3377 "allow methods compiled at tier 2 transition to tier 3") \ 3378 \ 3379 product(intx, Tier3LoadFeedback, 5, \ 3380 "Tier 3 thresholds will increase twofold when C1 queue size " \ 3381 "reaches this amount per compiler thread") \ 3382 \ 3383 product(intx, Tier4LoadFeedback, 3, \ 3384 "Tier 4 thresholds will increase twofold when C2 queue size " \ 3385 "reaches this amount per compiler thread") \ 3386 \ 3387 product(intx, TieredCompileTaskTimeout, 50, \ 3388 "Kill compile task if method was not used within " \ 3389 "given timeout in milliseconds") \ 3390 \ 3391 product(intx, TieredStopAtLevel, 4, \ 3392 "Stop at given compilation level") \ 3393 \ 3394 product(intx, Tier0ProfilingStartPercentage, 200, \ 3395 "Start profiling in interpreter if the counters exceed tier 3" \ 3396 "thresholds by the specified percentage") \ 3397 \ 3398 product(intx, TieredRateUpdateMinTime, 1, \ 3399 "Minimum rate sampling interval (in milliseconds)") \ 3400 \ 3401 product(intx, TieredRateUpdateMaxTime, 25, \ 3402 "Maximum rate sampling interval (in milliseconds)") \ 3403 \ 3404 product_pd(bool, TieredCompilation, \ 3405 "Enable tiered compilation") \ 3406 \ 3407 product(bool, PrintTieredEvents, false, \ 3408 "Print tiered events notifications") \ 3409 \ 3410 product_pd(intx, OnStackReplacePercentage, \ 3411 "NON_TIERED number of method invocations/branches (expressed as %"\ 3412 "of CompileThreshold) before (re-)compiling OSR code") \ 3413 \ 3414 product(intx, InterpreterProfilePercentage, 33, \ 3415 "NON_TIERED number of method invocations/branches (expressed as %"\ 3416 "of CompileThreshold) before profiling in the interpreter") \ 3417 \ 3418 develop(intx, MaxRecompilationSearchLength, 10, \ 3419 "max. # frames to inspect searching for recompilee") \ 3420 \ 3421 develop(intx, MaxInterpretedSearchLength, 3, \ 3422 "max. # interp. frames to skip when searching for recompilee") \ 3423 \ 3424 develop(intx, DesiredMethodLimit, 8000, \ 3425 "desired max. method size (in bytecodes) after inlining") \ 3426 \ 3427 develop(intx, HugeMethodLimit, 8000, \ 3428 "don't compile methods larger than this if " \ 3429 "+DontCompileHugeMethods") \ 3430 \ 3431 /* New JDK 1.4 reflection implementation */ \ 3432 \ 3433 develop(bool, UseNewReflection, true, \ 3434 "Temporary flag for transition to reflection based on dynamic " \ 3435 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ 3436 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ 3437 "changes were needed") \ 3438 \ 3439 develop(bool, VerifyReflectionBytecodes, false, \ 3440 "Force verification of 1.4 reflection bytecodes. Does not work " \ 3441 "in situations like that described in 4486457 or for " \ 3442 "constructors generated for serialization, so can not be enabled "\ 3443 "in product.") \ 3444 \ 3445 product(bool, ReflectionWrapResolutionErrors, true, \ 3446 "Temporary flag for transition to AbstractMethodError wrapped " \ 3447 "in InvocationTargetException. See 6531596") \ 3448 \ 3449 \ 3450 develop(intx, FastSuperclassLimit, 8, \ 3451 "Depth of hardwired instanceof accelerator array") \ 3452 \ 3453 /* Properties for Java libraries */ \ 3454 \ 3455 product(uintx, MaxDirectMemorySize, 0, \ 3456 "Maximum total size of NIO direct-buffer allocations") \ 3457 \ 3458 /* temporary developer defined flags */ \ 3459 \ 3460 diagnostic(bool, UseNewCode, false, \ 3461 "Testing Only: Use the new version while testing") \ 3462 \ 3463 diagnostic(bool, UseNewCode2, false, \ 3464 "Testing Only: Use the new version while testing") \ 3465 \ 3466 diagnostic(bool, UseNewCode3, false, \ 3467 "Testing Only: Use the new version while testing") \ 3468 \ 3469 /* flags for performance data collection */ \ 3470 \ 3471 product(bool, UsePerfData, falseInEmbedded, \ 3472 "Flag to disable jvmstat instrumentation for performance testing" \ 3473 "and problem isolation purposes.") \ 3474 \ 3475 product(bool, PerfDataSaveToFile, false, \ 3476 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3477 \ 3478 product(ccstr, PerfDataSaveFile, NULL, \ 3479 "Save PerfData memory to the specified absolute pathname," \ 3480 "%p in the file name if present will be replaced by pid") \ 3481 \ 3482 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ 3483 "Data sampling interval in milliseconds") \ 3484 \ 3485 develop(bool, PerfTraceDataCreation, false, \ 3486 "Trace creation of Performance Data Entries") \ 3487 \ 3488 develop(bool, PerfTraceMemOps, false, \ 3489 "Trace PerfMemory create/attach/detach calls") \ 3490 \ 3491 product(bool, PerfDisableSharedMem, false, \ 3492 "Store performance data in standard memory") \ 3493 \ 3494 product(intx, PerfDataMemorySize, 32*K, \ 3495 "Size of performance data memory region. Will be rounded " \ 3496 "up to a multiple of the native os page size.") \ 3497 \ 3498 product(intx, PerfMaxStringConstLength, 1024, \ 3499 "Maximum PerfStringConstant string length before truncation") \ 3500 \ 3501 product(bool, PerfAllowAtExitRegistration, false, \ 3502 "Allow registration of atexit() methods") \ 3503 \ 3504 product(bool, PerfBypassFileSystemCheck, false, \ 3505 "Bypass Win32 file system criteria checks (Windows Only)") \ 3506 \ 3507 product(intx, UnguardOnExecutionViolation, 0, \ 3508 "Unguard page and retry on no-execute fault (Win32 only)" \ 3509 "0=off, 1=conservative, 2=aggressive") \ 3510 \ 3511 /* Serviceability Support */ \ 3512 \ 3513 product(bool, ManagementServer, false, \ 3514 "Create JMX Management Server") \ 3515 \ 3516 product(bool, DisableAttachMechanism, false, \ 3517 "Disable mechanism that allows tools to attach to this VM") \ 3518 \ 3519 product(bool, StartAttachListener, false, \ 3520 "Always start Attach Listener at VM startup") \ 3521 \ 3522 manageable(bool, PrintConcurrentLocks, false, \ 3523 "Print java.util.concurrent locks in thread dump") \ 3524 \ 3525 product(bool, TransmitErrorReport, false, \ 3526 "Enable error report transmission on erroneous termination") \ 3527 \ 3528 product(ccstr, ErrorReportServer, NULL, \ 3529 "Override built-in error report server address") \ 3530 \ 3531 /* Shared spaces */ \ 3532 \ 3533 product(bool, UseSharedSpaces, true, \ 3534 "Use shared spaces for metadata") \ 3535 \ 3536 product(bool, RequireSharedSpaces, false, \ 3537 "Require shared spaces for metadata") \ 3538 \ 3539 product(bool, DumpSharedSpaces, false, \ 3540 "Special mode: JVM reads a class list, loads classes, builds " \ 3541 "shared spaces, and dumps the shared spaces to a file to be " \ 3542 "used in future JVM runs.") \ 3543 \ 3544 product(bool, PrintSharedSpaces, false, \ 3545 "Print usage of shared spaces") \ 3546 \ 3547 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3548 "Size of read-write space for metadata (in bytes)") \ 3549 \ 3550 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ 3551 "Size of read-only space for metadata (in bytes)") \ 3552 \ 3553 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ 3554 "Size of the shared miscellaneous data area (in bytes)") \ 3555 \ 3556 product(uintx, SharedMiscCodeSize, 120*K, \ 3557 "Size of the shared miscellaneous code area (in bytes)") \ 3558 \ 3559 product(uintx, SharedDummyBlockSize, 0, \ 3560 "Size of dummy block used to shift heap addresses (in bytes)") \ 3561 \ 3562 diagnostic(bool, EnableInvokeDynamic, true, \ 3563 "support JSR 292 (method handles, invokedynamic, " \ 3564 "anonymous classes") \ 3565 \ 3566 diagnostic(bool, PrintMethodHandleStubs, false, \ 3567 "Print generated stub code for method handles") \ 3568 \ 3569 develop(bool, TraceMethodHandles, false, \ 3570 "trace internal method handle operations") \ 3571 \ 3572 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 3573 "perform extra checks when constructing method handles") \ 3574 \ 3575 diagnostic(bool, ShowHiddenFrames, false, \ 3576 "show method handle implementation frames (usually hidden)") \ 3577 \ 3578 experimental(bool, TrustFinalNonStaticFields, false, \ 3579 "trust final non-static declarations for constant folding") \ 3580 \ 3581 develop(bool, TraceInvokeDynamic, false, \ 3582 "trace internal invoke dynamic operations") \ 3583 \ 3584 diagnostic(bool, PauseAtStartup, false, \ 3585 "Causes the VM to pause at startup time and wait for the pause " \ 3586 "file to be removed (default: ./vm.paused.<pid>)") \ 3587 \ 3588 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3589 "The file to create and for whose removal to await when pausing " \ 3590 "at startup. (default: ./vm.paused.<pid>)") \ 3591 \ 3592 diagnostic(bool, PauseAtExit, false, \ 3593 "Pause and wait for keypress on exit if a debugger is attached") \ 3594 \ 3595 product(bool, ExtendedDTraceProbes, false, \ 3596 "Enable performance-impacting dtrace probes") \ 3597 \ 3598 product(bool, DTraceMethodProbes, false, \ 3599 "Enable dtrace probes for method-entry and method-exit") \ 3600 \ 3601 product(bool, DTraceAllocProbes, false, \ 3602 "Enable dtrace probes for object allocation") \ 3603 \ 3604 product(bool, DTraceMonitorProbes, false, \ 3605 "Enable dtrace probes for monitor events") \ 3606 \ 3607 product(bool, RelaxAccessControlCheck, false, \ 3608 "Relax the access control checks in the verifier") \ 3609 \ 3610 diagnostic(bool, PrintDTraceDOF, false, \ 3611 "Print the DTrace DOF passed to the system for JSDT probes") \ 3612 \ 3613 product(uintx, StringTableSize, defaultStringTableSize, \ 3614 "Number of buckets in the interned String table") \ 3615 \ 3616 develop(bool, TraceDefaultMethods, false, \ 3617 "Trace the default method processing steps") \ 3618 \ 3619 develop(bool, ParseAllGenericSignatures, false, \ 3620 "Parse all generic signatures while classloading") \ 3621 \ 3622 develop(bool, VerifyGenericSignatures, false, \ 3623 "Abort VM on erroneous or inconsistent generic signatures") \ 3624 \ 3625 product(bool, UseVMInterruptibleIO, false, \ 3626 "(Unstable, Solaris-specific) Thread interrupt before or with " \ 3627 "EINTR for I/O operations results in OS_INTRPT. The default value"\ 3628 " of this flag is true for JDK 6 and earlier") \ 3629 \ 3630 diagnostic(bool, WhiteBoxAPI, false, \ 3631 "Enable internal testing APIs") \ 3632 \ 3633 product(bool, PrintGCCause, true, \ 3634 "Include GC cause in GC logging") 3635 3636/* 3637 * Macros for factoring of globals 3638 */ 3639 3640// Interface macros 3641#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3642#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 3643#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 3644#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 3645#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 3646#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 3647#ifdef PRODUCT 3648#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 3649#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 3650#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) 3651#else 3652#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 3653#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 3654#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3655#endif 3656// Special LP64 flags, product only needed for now. 3657#ifdef _LP64 3658#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3659#else 3660#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 3661#endif // _LP64 3662 3663// Implementation macros 3664#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 3665#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 3666#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 3667#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 3668#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 3669#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 3670#ifdef PRODUCT 3671#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ 3672#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ 3673#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 3674#else 3675#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 3676#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 3677#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 3678#endif 3679#ifdef _LP64 3680#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 3681#else 3682#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 3683#endif // _LP64 3684 3685RUNTIME_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) 3686 3687RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) 3688 3689ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) 3690 3691// Extensions 3692 3693#include "runtime/globals_ext.hpp" 3694 3695#endif // SHARE_VM_RUNTIME_GLOBALS_HPP 3696