globals.hpp revision 76:d6fe2e4959d6
1266423Sjfv/* 2266423Sjfv * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. 3266423Sjfv * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4266423Sjfv * 5266423Sjfv * This code is free software; you can redistribute it and/or modify it 6266423Sjfv * under the terms of the GNU General Public License version 2 only, as 7266423Sjfv * published by the Free Software Foundation. 8266423Sjfv * 9266423Sjfv * This code is distributed in the hope that it will be useful, but WITHOUT 10266423Sjfv * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11266423Sjfv * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12266423Sjfv * version 2 for more details (a copy is included in the LICENSE file that 13266423Sjfv * accompanied this code). 14266423Sjfv * 15266423Sjfv * You should have received a copy of the GNU General Public License version 16266423Sjfv * 2 along with this work; if not, write to the Free Software Foundation, 17266423Sjfv * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18266423Sjfv * 19266423Sjfv * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20266423Sjfv * CA 95054 USA or visit www.sun.com if you need additional information or 21266423Sjfv * have any questions. 22266423Sjfv * 23266423Sjfv */ 24266423Sjfv 25266423Sjfv#if !defined(COMPILER1) && !defined(COMPILER2) 26266423Sjfvdefine_pd_global(bool, BackgroundCompilation, false); 27266423Sjfvdefine_pd_global(bool, UseTLAB, false); 28266423Sjfvdefine_pd_global(bool, CICompileOSR, false); 29266423Sjfvdefine_pd_global(bool, UseTypeProfile, false); 30266423Sjfvdefine_pd_global(bool, UseOnStackReplacement, false); 31266423Sjfvdefine_pd_global(bool, InlineIntrinsics, false); 32266423Sjfvdefine_pd_global(bool, PreferInterpreterNativeStubs, true); 33266423Sjfvdefine_pd_global(bool, ProfileInterpreter, false); 34266423Sjfvdefine_pd_global(bool, ProfileTraps, false); 35266423Sjfvdefine_pd_global(bool, TieredCompilation, false); 36266423Sjfv 37266423Sjfvdefine_pd_global(intx, CompileThreshold, 0); 38266423Sjfvdefine_pd_global(intx, Tier2CompileThreshold, 0); 39266423Sjfvdefine_pd_global(intx, Tier3CompileThreshold, 0); 40266423Sjfvdefine_pd_global(intx, Tier4CompileThreshold, 0); 41266423Sjfv 42266423Sjfvdefine_pd_global(intx, BackEdgeThreshold, 0); 43266423Sjfvdefine_pd_global(intx, Tier2BackEdgeThreshold, 0); 44266423Sjfvdefine_pd_global(intx, Tier3BackEdgeThreshold, 0); 45266423Sjfvdefine_pd_global(intx, Tier4BackEdgeThreshold, 0); 46266423Sjfv 47266423Sjfvdefine_pd_global(intx, OnStackReplacePercentage, 0); 48266423Sjfvdefine_pd_global(bool, ResizeTLAB, false); 49266423Sjfvdefine_pd_global(intx, FreqInlineSize, 0); 50266423Sjfvdefine_pd_global(intx, NewSizeThreadIncrease, 4*K); 51266423Sjfvdefine_pd_global(intx, NewRatio, 4); 52266423Sjfvdefine_pd_global(intx, InlineClassNatives, true); 53266423Sjfvdefine_pd_global(intx, InlineUnsafeOps, true); 54266423Sjfvdefine_pd_global(intx, InitialCodeCacheSize, 160*K); 55266423Sjfvdefine_pd_global(intx, ReservedCodeCacheSize, 32*M); 56266423Sjfvdefine_pd_global(intx, CodeCacheExpansionSize, 32*K); 57266423Sjfvdefine_pd_global(intx, CodeCacheMinBlockLength, 1); 58266423Sjfvdefine_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); 59266423Sjfvdefine_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); 60266423Sjfvdefine_pd_global(bool, NeverActAsServerClassMachine, true); 61266423Sjfvdefine_pd_global(uintx, DefaultMaxRAM, 1*G); 62266423Sjfv#define CI_COMPILER_COUNT 0 63266423Sjfv#else 64266423Sjfv 65266423Sjfv#ifdef COMPILER2 66266423Sjfv#define CI_COMPILER_COUNT 2 67266423Sjfv#else 68266423Sjfv#define CI_COMPILER_COUNT 1 69266423Sjfv#endif // COMPILER2 70266423Sjfv 71266423Sjfv#endif // no compilers 72266423Sjfv 73266423Sjfv 74266423Sjfv// string type aliases used only in this file 75266423Sjfvtypedef const char* ccstr; 76266423Sjfvtypedef const char* ccstrlist; // represents string arguments which accumulate 77266423Sjfv 78266423Sjfvenum FlagValueOrigin { 79266423Sjfv DEFAULT = 0, 80266423Sjfv COMMAND_LINE = 1, 81266423Sjfv ENVIRON_VAR = 2, 82266423Sjfv CONFIG_FILE = 3, 83266423Sjfv MANAGEMENT = 4, 84266423Sjfv ERGONOMIC = 5, 85266423Sjfv ATTACH_ON_DEMAND = 6, 86266423Sjfv INTERNAL = 99 87266423Sjfv}; 88266423Sjfv 89266423Sjfvstruct Flag { 90266423Sjfv const char *type; 91266423Sjfv const char *name; 92266423Sjfv void* addr; 93266423Sjfv const char *kind; 94266423Sjfv FlagValueOrigin origin; 95266423Sjfv 96266423Sjfv // points to all Flags static array 97266423Sjfv static Flag *flags; 98266423Sjfv 99266423Sjfv // number of flags 100266423Sjfv static size_t numFlags; 101266423Sjfv 102266423Sjfv static Flag* find_flag(char* name, size_t length); 103266423Sjfv 104266423Sjfv bool is_bool() const { return strcmp(type, "bool") == 0; } 105266423Sjfv bool get_bool() const { return *((bool*) addr); } 106266423Sjfv void set_bool(bool value) { *((bool*) addr) = value; } 107266423Sjfv 108266423Sjfv bool is_intx() const { return strcmp(type, "intx") == 0; } 109266423Sjfv intx get_intx() const { return *((intx*) addr); } 110266423Sjfv void set_intx(intx value) { *((intx*) addr) = value; } 111266423Sjfv 112266423Sjfv bool is_uintx() const { return strcmp(type, "uintx") == 0; } 113266423Sjfv uintx get_uintx() const { return *((uintx*) addr); } 114266423Sjfv void set_uintx(uintx value) { *((uintx*) addr) = value; } 115266423Sjfv 116266423Sjfv bool is_double() const { return strcmp(type, "double") == 0; } 117266423Sjfv double get_double() const { return *((double*) addr); } 118266423Sjfv void set_double(double value) { *((double*) addr) = value; } 119266423Sjfv 120266423Sjfv bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } 121266423Sjfv bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } 122266423Sjfv ccstr get_ccstr() const { return *((ccstr*) addr); } 123266423Sjfv void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } 124266423Sjfv 125266423Sjfv bool is_unlocker() const; 126266423Sjfv bool is_unlocked() const; 127266423Sjfv bool is_writeable() const; 128266423Sjfv bool is_external() const; 129266423Sjfv 130266423Sjfv void print_on(outputStream* st); 131266423Sjfv void print_as_flag(outputStream* st); 132266423Sjfv}; 133266423Sjfv 134266423Sjfv// debug flags control various aspects of the VM and are global accessible 135266423Sjfv 136266423Sjfv// use FlagSetting to temporarily change some debug flag 137266423Sjfv// e.g. FlagSetting fs(DebugThisAndThat, true); 138266423Sjfv// restored to previous value upon leaving scope 139266423Sjfvclass FlagSetting { 140266423Sjfv bool val; 141266423Sjfv bool* flag; 142266423Sjfv public: 143266423Sjfv FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 144266423Sjfv ~FlagSetting() { *flag = val; } 145266423Sjfv}; 146266423Sjfv 147266423Sjfv 148266423Sjfvclass CounterSetting { 149266423Sjfv intx* counter; 150266423Sjfv public: 151266423Sjfv CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 152266423Sjfv ~CounterSetting() { (*counter)--; } 153266423Sjfv}; 154266423Sjfv 155266423Sjfv 156266423Sjfvclass IntFlagSetting { 157266423Sjfv intx val; 158266423Sjfv intx* flag; 159266423Sjfv public: 160266423Sjfv IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } 161266423Sjfv ~IntFlagSetting() { *flag = val; } 162266423Sjfv}; 163266423Sjfv 164266423Sjfv 165266423Sjfvclass DoubleFlagSetting { 166266423Sjfv double val; 167266423Sjfv double* flag; 168266423Sjfv public: 169266423Sjfv DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 170266423Sjfv ~DoubleFlagSetting() { *flag = val; } 171266423Sjfv}; 172266423Sjfv 173266423Sjfv 174266423Sjfvclass CommandLineFlags { 175266423Sjfv public: 176266423Sjfv static bool boolAt(char* name, size_t len, bool* value); 177266423Sjfv static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } 178266423Sjfv static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); 179266423Sjfv static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } 180266423Sjfv 181266423Sjfv static bool intxAt(char* name, size_t len, intx* value); 182266423Sjfv static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } 183266423Sjfv static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); 184266423Sjfv static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } 185266423Sjfv 186266423Sjfv static bool uintxAt(char* name, size_t len, uintx* value); 187266423Sjfv static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } 188266423Sjfv static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); 189266423Sjfv static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } 190266423Sjfv 191266423Sjfv static bool doubleAt(char* name, size_t len, double* value); 192266423Sjfv static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } 193266423Sjfv static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); 194266423Sjfv static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } 195266423Sjfv 196266423Sjfv static bool ccstrAt(char* name, size_t len, ccstr* value); 197266423Sjfv static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } 198266423Sjfv static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); 199266423Sjfv static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } 200266423Sjfv 201266423Sjfv // Returns false if name is not a command line flag. 202266423Sjfv static bool wasSetOnCmdline(const char* name, bool* value); 203266423Sjfv static void printSetFlags(); 204266423Sjfv 205266423Sjfv static void printFlags() PRODUCT_RETURN; 206266423Sjfv 207266423Sjfv static void verify() PRODUCT_RETURN; 208266423Sjfv}; 209266423Sjfv 210266423Sjfv// use this for flags that are true by default in the debug version but 211266423Sjfv// false in the optimized version, and vice versa 212266423Sjfv#ifdef ASSERT 213266423Sjfv#define trueInDebug true 214266423Sjfv#define falseInDebug false 215266423Sjfv#else 216266423Sjfv#define trueInDebug false 217266423Sjfv#define falseInDebug true 218266423Sjfv#endif 219266423Sjfv 220266423Sjfv// use this for flags that are true per default in the product build 221266423Sjfv// but false in development builds, and vice versa 222266423Sjfv#ifdef PRODUCT 223266423Sjfv#define trueInProduct true 224266423Sjfv#define falseInProduct false 225266423Sjfv#else 226266423Sjfv#define trueInProduct false 227266423Sjfv#define falseInProduct true 228266423Sjfv#endif 229266423Sjfv 230266423Sjfv// use this for flags that are true per default in the tiered build 231266423Sjfv// but false in non-tiered builds, and vice versa 232266423Sjfv#ifdef TIERED 233266423Sjfv#define trueInTiered true 234266423Sjfv#define falseInTiered false 235266423Sjfv#else 236266423Sjfv#define trueInTiered false 237266423Sjfv#define falseInTiered true 238266423Sjfv#endif 239266423Sjfv 240266423Sjfv 241266423Sjfv// develop flags are settable / visible only during development and are constant in the PRODUCT version 242266423Sjfv// product flags are always settable / visible 243266423Sjfv// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 244266423Sjfv 245266423Sjfv// A flag must be declared with one of the following types: 246266423Sjfv// bool, intx, uintx, ccstr. 247266423Sjfv// The type "ccstr" is an alias for "const char*" and is used 248266423Sjfv// only in this file, because the macrology requires single-token type names. 249266423Sjfv 250266423Sjfv// Note: Diagnostic options not meant for VM tuning or for product modes. 251266423Sjfv// They are to be used for VM quality assurance or field diagnosis 252266423Sjfv// of VM bugs. They are hidden so that users will not be encouraged to 253266423Sjfv// try them as if they were VM ordinary execution options. However, they 254266423Sjfv// are available in the product version of the VM. Under instruction 255266423Sjfv// from support engineers, VM customers can turn them on to collect 256266423Sjfv// diagnostic information about VM problems. To use a VM diagnostic 257266423Sjfv// option, you must first specify +UnlockDiagnosticVMOptions. 258266423Sjfv// (This master switch also affects the behavior of -Xprintflags.) 259266423Sjfv 260266423Sjfv// manageable flags are writeable external product flags. 261266423Sjfv// They are dynamically writeable through the JDK management interface 262266423Sjfv// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 263266423Sjfv// These flags are external exported interface (see CCC). The list of 264266423Sjfv// manageable flags can be queried programmatically through the management 265266423Sjfv// interface. 266266423Sjfv// 267266423Sjfv// A flag can be made as "manageable" only if 268266423Sjfv// - the flag is defined in a CCC as an external exported interface. 269266423Sjfv// - the VM implementation supports dynamic setting of the flag. 270266423Sjfv// This implies that the VM must *always* query the flag variable 271266423Sjfv// and not reuse state related to the flag state at any given time. 272266423Sjfv// - you want the flag to be queried programmatically by the customers. 273266423Sjfv// 274266423Sjfv// product_rw flags are writeable internal product flags. 275266423Sjfv// They are like "manageable" flags but for internal/private use. 276266423Sjfv// The list of product_rw flags are internal/private flags which 277266423Sjfv// may be changed/removed in a future release. It can be set 278266423Sjfv// through the management interface to get/set value 279266423Sjfv// when the name of flag is supplied. 280266423Sjfv// 281266423Sjfv// A flag can be made as "product_rw" only if 282266423Sjfv// - the VM implementation supports dynamic setting of the flag. 283266423Sjfv// This implies that the VM must *always* query the flag variable 284266423Sjfv// and not reuse state related to the flag state at any given time. 285266423Sjfv// 286266423Sjfv// Note that when there is a need to support develop flags to be writeable, 287266423Sjfv// it can be done in the same way as product_rw. 288266423Sjfv 289266423Sjfv#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, notproduct, manageable, product_rw) \ 290266423Sjfv \ 291266423Sjfv /* UseMembar is theoretically a temp flag used for memory barrier \ 292266423Sjfv * removal testing. It was supposed to be removed before FCS but has \ 293266423Sjfv * been re-added (see 6401008) */ \ 294266423Sjfv product(bool, UseMembar, false, \ 295266423Sjfv "(Unstable) Issues membars on thread state transitions") \ 296266423Sjfv \ 297266423Sjfv product(bool, PrintCommandLineFlags, false, \ 298266423Sjfv "Prints flags that appeared on the command line") \ 299266423Sjfv \ 300266423Sjfv diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 301266423Sjfv "Enable processing of flags relating to field diagnostics") \ 302266423Sjfv \ 303266423Sjfv product(bool, JavaMonitorsInStackTrace, true, \ 304266423Sjfv "Print info. about Java monitor locks when the stacks are dumped")\ 305266423Sjfv \ 306266423Sjfv product_pd(bool, UseLargePages, \ 307266423Sjfv "Use large page memory") \ 308266423Sjfv \ 309266423Sjfv develop(bool, TracePageSizes, false, \ 310266423Sjfv "Trace page size selection and usage.") \ 311266423Sjfv \ 312266423Sjfv product(bool, UseNUMA, false, \ 313266423Sjfv "Use NUMA if available") \ 314266423Sjfv \ 315266423Sjfv product(intx, NUMAChunkResizeWeight, 20, \ 316266423Sjfv "Percentage (0-100) used to weight the current sample when " \ 317266423Sjfv "computing exponentially decaying average for " \ 318266423Sjfv "AdaptiveNUMAChunkSizing") \ 319266423Sjfv \ 320266423Sjfv product(intx, NUMASpaceResizeRate, 1*G, \ 321266423Sjfv "Do not reallocate more that this amount per collection") \ 322266423Sjfv \ 323266423Sjfv product(bool, UseAdaptiveNUMAChunkSizing, true, \ 324266423Sjfv "Enable adaptive chunk sizing for NUMA") \ 325266423Sjfv \ 326266423Sjfv product(bool, NUMAStats, false, \ 327266423Sjfv "Print NUMA stats in detailed heap information") \ 328266423Sjfv \ 329266423Sjfv product(intx, NUMAPageScanRate, 256, \ 330266423Sjfv "Maximum number of pages to include in the page scan procedure") \ 331266423Sjfv \ 332266423Sjfv product_pd(bool, NeedsDeoptSuspend, \ 333266423Sjfv "True for register window machines (sparc/ia64)") \ 334266423Sjfv \ 335266423Sjfv product(intx, UseSSE, 99, \ 336266423Sjfv "Highest supported SSE instructions set on x86/x64") \ 337266423Sjfv \ 338266423Sjfv product(uintx, LargePageSizeInBytes, 0, \ 339266423Sjfv "Large page size (0 to let VM choose the page size") \ 340266423Sjfv \ 341266423Sjfv product(uintx, LargePageHeapSizeThreshold, 128*M, \ 342266423Sjfv "Use large pages if max heap is at least this big") \ 343266423Sjfv \ 344266423Sjfv product(bool, ForceTimeHighResolution, false, \ 345266423Sjfv "Using high time resolution(For Win32 only)") \ 346266423Sjfv \ 347266423Sjfv develop(bool, TraceItables, false, \ 348266423Sjfv "Trace initialization and use of itables") \ 349266423Sjfv \ 350266423Sjfv develop(bool, TracePcPatching, false, \ 351266423Sjfv "Trace usage of frame::patch_pc") \ 352266423Sjfv \ 353266423Sjfv develop(bool, TraceJumps, false, \ 354266423Sjfv "Trace assembly jumps in thread ring buffer") \ 355266423Sjfv \ 356266423Sjfv develop(bool, TraceRelocator, false, \ 357266423Sjfv "Trace the bytecode relocator") \ 358266423Sjfv \ 359266423Sjfv develop(bool, TraceLongCompiles, false, \ 360266423Sjfv "Print out every time compilation is longer than " \ 361266423Sjfv "a given threashold") \ 362266423Sjfv \ 363266423Sjfv develop(bool, SafepointALot, false, \ 364266423Sjfv "Generates a lot of safepoints. Works with " \ 365266423Sjfv "GuaranteedSafepointInterval") \ 366266423Sjfv \ 367266423Sjfv product_pd(bool, BackgroundCompilation, \ 368266423Sjfv "A thread requesting compilation is not blocked during " \ 369266423Sjfv "compilation") \ 370266423Sjfv \ 371266423Sjfv product(bool, PrintVMQWaitTime, false, \ 372266423Sjfv "Prints out the waiting time in VM operation queue") \ 373266423Sjfv \ 374266423Sjfv develop(bool, BailoutToInterpreterForThrows, false, \ 375266423Sjfv "Compiled methods which throws/catches exceptions will be " \ 376266423Sjfv "deopt and intp.") \ 377266423Sjfv \ 378266423Sjfv develop(bool, NoYieldsInMicrolock, false, \ 379266423Sjfv "Disable yields in microlock") \ 380266423Sjfv \ 381266423Sjfv develop(bool, TraceOopMapGeneration, false, \ 382266423Sjfv "Shows oopmap generation") \ 383266423Sjfv \ 384266423Sjfv product(bool, MethodFlushing, true, \ 385266423Sjfv "Reclamation of zombie and not-entrant methods") \ 386266423Sjfv \ 387266423Sjfv develop(bool, VerifyStack, false, \ 388266423Sjfv "Verify stack of each thread when it is entering a runtime call") \ 389266423Sjfv \ 390266423Sjfv develop(bool, ForceUnreachable, false, \ 391266423Sjfv "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ 392266423Sjfv \ 393266423Sjfv notproduct(bool, StressDerivedPointers, false, \ 394266423Sjfv "Force scavenge when a derived pointers is detected on stack " \ 395266423Sjfv "after rtm call") \ 396266423Sjfv \ 397266423Sjfv develop(bool, TraceDerivedPointers, false, \ 398266423Sjfv "Trace traversal of derived pointers on stack") \ 399266423Sjfv \ 400266423Sjfv notproduct(bool, TraceCodeBlobStacks, false, \ 401266423Sjfv "Trace stack-walk of codeblobs") \ 402266423Sjfv \ 403266423Sjfv product(bool, PrintJNIResolving, false, \ 404266423Sjfv "Used to implement -v:jni") \ 405266423Sjfv \ 406266423Sjfv notproduct(bool, PrintRewrites, false, \ 407266423Sjfv "Print methods that are being rewritten") \ 408266423Sjfv \ 409266423Sjfv product(bool, UseInlineCaches, true, \ 410266423Sjfv "Use Inline Caches for virtual calls ") \ 411266423Sjfv \ 412266423Sjfv develop(bool, InlineArrayCopy, true, \ 413266423Sjfv "inline arraycopy native that is known to be part of " \ 414266423Sjfv "base library DLL") \ 415266423Sjfv \ 416266423Sjfv develop(bool, InlineObjectHash, true, \ 417266423Sjfv "inline Object::hashCode() native that is known to be part " \ 418266423Sjfv "of base library DLL") \ 419266423Sjfv \ 420266423Sjfv develop(bool, InlineObjectCopy, true, \ 421266423Sjfv "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ 422266423Sjfv \ 423266423Sjfv develop(bool, InlineNatives, true, \ 424266423Sjfv "inline natives that are known to be part of base library DLL") \ 425266423Sjfv \ 426266423Sjfv develop(bool, InlineMathNatives, true, \ 427266423Sjfv "inline SinD, CosD, etc.") \ 428266423Sjfv \ 429266423Sjfv develop(bool, InlineClassNatives, true, \ 430266423Sjfv "inline Class.isInstance, etc") \ 431266423Sjfv \ 432266423Sjfv develop(bool, InlineAtomicLong, true, \ 433266423Sjfv "inline sun.misc.AtomicLong") \ 434266423Sjfv \ 435266423Sjfv develop(bool, InlineThreadNatives, true, \ 436266423Sjfv "inline Thread.currentThread, etc") \ 437266423Sjfv \ 438266423Sjfv develop(bool, InlineReflectionGetCallerClass, true, \ 439266423Sjfv "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ 440266423Sjfv "of base library DLL") \ 441266423Sjfv \ 442266423Sjfv develop(bool, InlineUnsafeOps, true, \ 443266423Sjfv "inline memory ops (native methods) from sun.misc.Unsafe") \ 444266423Sjfv \ 445266423Sjfv develop(bool, ConvertCmpD2CmpF, true, \ 446266423Sjfv "Convert cmpD to cmpF when one input is constant in float range") \ 447266423Sjfv \ 448266423Sjfv develop(bool, ConvertFloat2IntClipping, true, \ 449266423Sjfv "Convert float2int clipping idiom to integer clipping") \ 450266423Sjfv \ 451266423Sjfv develop(bool, SpecialStringCompareTo, true, \ 452266423Sjfv "special version of string compareTo") \ 453266423Sjfv \ 454266423Sjfv develop(bool, SpecialStringIndexOf, true, \ 455266423Sjfv "special version of string indexOf") \ 456266423Sjfv \ 457266423Sjfv develop(bool, TraceCallFixup, false, \ 458266423Sjfv "traces all call fixups") \ 459266423Sjfv \ 460266423Sjfv develop(bool, DeoptimizeALot, false, \ 461266423Sjfv "deoptimize at every exit from the runtime system") \ 462266423Sjfv \ 463266423Sjfv develop(ccstrlist, DeoptimizeOnlyAt, "", \ 464266423Sjfv "a comma separated list of bcis to deoptimize at") \ 465266423Sjfv \ 466266423Sjfv product(bool, DeoptimizeRandom, false, \ 467266423Sjfv "deoptimize random frames on random exit from the runtime system")\ 468266423Sjfv \ 469266423Sjfv notproduct(bool, ZombieALot, false, \ 470266423Sjfv "creates zombies (non-entrant) at exit from the runt. system") \ 471266423Sjfv \ 472266423Sjfv notproduct(bool, WalkStackALot, false, \ 473266423Sjfv "trace stack (no print) at every exit from the runtime system") \ 474266423Sjfv \ 475266423Sjfv develop(bool, Debugging, false, \ 476266423Sjfv "set when executing debug methods in debug.ccp " \ 477266423Sjfv "(to prevent triggering assertions)") \ 478266423Sjfv \ 479266423Sjfv notproduct(bool, StrictSafepointChecks, trueInDebug, \ 480266423Sjfv "Enable strict checks that safepoints cannot happen for threads " \ 481266423Sjfv "that used No_Safepoint_Verifier") \ 482266423Sjfv \ 483266423Sjfv notproduct(bool, VerifyLastFrame, false, \ 484266423Sjfv "Verify oops on last frame on entry to VM") \ 485266423Sjfv \ 486266423Sjfv develop(bool, TraceHandleAllocation, false, \ 487266423Sjfv "Prints out warnings when suspicious many handles are allocated") \ 488266423Sjfv \ 489266423Sjfv product(bool, UseCompilerSafepoints, true, \ 490266423Sjfv "Stop at safepoints in compiled code") \ 491266423Sjfv \ 492266423Sjfv product(bool, UseSplitVerifier, true, \ 493266423Sjfv "use split verifier with StackMapTable attributes") \ 494266423Sjfv \ 495266423Sjfv product(bool, FailOverToOldVerifier, true, \ 496266423Sjfv "fail over to old verifier when split verifier fails") \ 497266423Sjfv \ 498266423Sjfv develop(bool, ShowSafepointMsgs, false, \ 499266423Sjfv "Show msg. about safepoint synch.") \ 500266423Sjfv \ 501266423Sjfv product(bool, SafepointTimeout, false, \ 502266423Sjfv "Time out and warn or fail after SafepointTimeoutDelay " \ 503266423Sjfv "milliseconds if failed to reach safepoint") \ 504266423Sjfv \ 505266423Sjfv develop(bool, DieOnSafepointTimeout, false, \ 506266423Sjfv "Die upon failure to reach safepoint (see SafepointTimeout)") \ 507266423Sjfv \ 508266423Sjfv /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 509266423Sjfv /* typically, at most a few retries are needed */ \ 510266423Sjfv product(intx, SuspendRetryCount, 50, \ 511266423Sjfv "Maximum retry count for an external suspend request") \ 512266423Sjfv \ 513266423Sjfv product(intx, SuspendRetryDelay, 5, \ 514266423Sjfv "Milliseconds to delay per retry (* current_retry_count)") \ 515266423Sjfv \ 516266423Sjfv product(bool, AssertOnSuspendWaitFailure, false, \ 517266423Sjfv "Assert/Guarantee on external suspend wait failure") \ 518266423Sjfv \ 519266423Sjfv product(bool, TraceSuspendWaitFailures, false, \ 520266423Sjfv "Trace external suspend wait failures") \ 521266423Sjfv \ 522266423Sjfv product(bool, MaxFDLimit, true, \ 523266423Sjfv "Bump the number of file descriptors to max in solaris.") \ 524266423Sjfv \ 525266423Sjfv notproduct(bool, LogEvents, trueInDebug, \ 526266423Sjfv "Enable Event log") \ 527266423Sjfv \ 528266423Sjfv product(bool, BytecodeVerificationRemote, true, \ 529266423Sjfv "Enables the Java bytecode verifier for remote classes") \ 530266423Sjfv \ 531266423Sjfv product(bool, BytecodeVerificationLocal, false, \ 532266423Sjfv "Enables the Java bytecode verifier for local classes") \ 533266423Sjfv \ 534266423Sjfv develop(bool, ForceFloatExceptions, trueInDebug, \ 535266423Sjfv "Force exceptions on FP stack under/overflow") \ 536266423Sjfv \ 537266423Sjfv develop(bool, SoftMatchFailure, trueInProduct, \ 538266423Sjfv "If the DFA fails to match a node, print a message and bail out") \ 539266423Sjfv \ 540266423Sjfv develop(bool, VerifyStackAtCalls, false, \ 541266423Sjfv "Verify that the stack pointer is unchanged after calls") \ 542266423Sjfv \ 543266423Sjfv develop(bool, TraceJavaAssertions, false, \ 544266423Sjfv "Trace java language assertions") \ 545266423Sjfv \ 546266423Sjfv notproduct(bool, CheckAssertionStatusDirectives, false, \ 547266423Sjfv "temporary - see javaClasses.cpp") \ 548266423Sjfv \ 549266423Sjfv notproduct(bool, PrintMallocFree, false, \ 550266423Sjfv "Trace calls to C heap malloc/free allocation") \ 551266423Sjfv \ 552266423Sjfv notproduct(bool, PrintOopAddress, false, \ 553266423Sjfv "Always print the location of the oop") \ 554266423Sjfv \ 555266423Sjfv notproduct(bool, VerifyCodeCacheOften, false, \ 556266423Sjfv "Verify compiled-code cache often") \ 557266423Sjfv \ 558266423Sjfv develop(bool, ZapDeadCompiledLocals, false, \ 559266423Sjfv "Zap dead locals in compiler frames") \ 560266423Sjfv \ 561266423Sjfv notproduct(bool, ZapDeadLocalsOld, false, \ 562266423Sjfv "Zap dead locals (old version, zaps all frames when " \ 563266423Sjfv "entering the VM") \ 564266423Sjfv \ 565266423Sjfv notproduct(bool, CheckOopishValues, false, \ 566266423Sjfv "Warn if value contains oop ( requires ZapDeadLocals)") \ 567266423Sjfv \ 568266423Sjfv develop(bool, UseMallocOnly, false, \ 569266423Sjfv "use only malloc/free for allocation (no resource area/arena)") \ 570266423Sjfv \ 571266423Sjfv develop(bool, PrintMalloc, false, \ 572266423Sjfv "print all malloc/free calls") \ 573266423Sjfv \ 574266423Sjfv develop(bool, ZapResourceArea, trueInDebug, \ 575266423Sjfv "Zap freed resource/arena space with 0xABABABAB") \ 576266423Sjfv \ 577266423Sjfv notproduct(bool, ZapVMHandleArea, trueInDebug, \ 578266423Sjfv "Zap freed VM handle space with 0xBCBCBCBC") \ 579266423Sjfv \ 580266423Sjfv develop(bool, ZapJNIHandleArea, trueInDebug, \ 581266423Sjfv "Zap freed JNI handle space with 0xFEFEFEFE") \ 582266423Sjfv \ 583266423Sjfv develop(bool, ZapUnusedHeapArea, false, \ 584266423Sjfv "Zap unused heap space with 0xBAADBABE") \ 585266423Sjfv \ 586266423Sjfv develop(bool, PrintVMMessages, true, \ 587266423Sjfv "Print vm messages on console") \ 588266423Sjfv \ 589266423Sjfv product(bool, PrintGCApplicationConcurrentTime, false, \ 590266423Sjfv "Print the time the application has been running") \ 591266423Sjfv \ 592266423Sjfv product(bool, PrintGCApplicationStoppedTime, false, \ 593266423Sjfv "Print the time the application has been stopped") \ 594266423Sjfv \ 595266423Sjfv develop(bool, Verbose, false, \ 596266423Sjfv "Prints additional debugging information from other modes") \ 597266423Sjfv \ 598266423Sjfv develop(bool, PrintMiscellaneous, false, \ 599266423Sjfv "Prints uncategorized debugging information (requires +Verbose)") \ 600266423Sjfv \ 601266423Sjfv develop(bool, WizardMode, false, \ 602266423Sjfv "Prints much more debugging information") \ 603266423Sjfv \ 604266423Sjfv product(bool, ShowMessageBoxOnError, false, \ 605266423Sjfv "Keep process alive on VM fatal error") \ 606266423Sjfv \ 607266423Sjfv product_pd(bool, UseOSErrorReporting, \ 608266423Sjfv "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 609266423Sjfv \ 610266423Sjfv product(bool, SuppressFatalErrorMessage, false, \ 611266423Sjfv "Do NO Fatal Error report [Avoid deadlock]") \ 612266423Sjfv \ 613266423Sjfv product(ccstrlist, OnError, "", \ 614266423Sjfv "Run user-defined commands on fatal error; see VMError.cpp " \ 615266423Sjfv "for examples") \ 616266423Sjfv \ 617266423Sjfv product(ccstrlist, OnOutOfMemoryError, "", \ 618266423Sjfv "Run user-defined commands on first java.lang.OutOfMemoryError") \ 619266423Sjfv \ 620266423Sjfv manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 621266423Sjfv "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 622266423Sjfv \ 623266423Sjfv manageable(ccstr, HeapDumpPath, NULL, \ 624266423Sjfv "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ 625266423Sjfv "directory) of the dump file (defaults to java_pid<pid>.hprof" \ 626266423Sjfv "in the working directory)") \ 627266423Sjfv \ 628266423Sjfv develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ 629266423Sjfv "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 630266423Sjfv "when the heap usage is larger than this") \ 631266423Sjfv \ 632266423Sjfv develop(uintx, HeapDumpSegmentSize, 1*G, \ 633266423Sjfv "Approximate segment size when generating a segmented heap dump") \ 634266423Sjfv \ 635266423Sjfv develop(bool, BreakAtWarning, false, \ 636266423Sjfv "Execute breakpoint upon encountering VM warning") \ 637266423Sjfv \ 638266423Sjfv product_pd(bool, UseVectoredExceptions, \ 639266423Sjfv "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ 640266423Sjfv \ 641266423Sjfv develop(bool, TraceVMOperation, false, \ 642266423Sjfv "Trace vm operations") \ 643266423Sjfv \ 644266423Sjfv develop(bool, UseFakeTimers, false, \ 645266423Sjfv "Tells whether the VM should use system time or a fake timer") \ 646266423Sjfv \ 647266423Sjfv diagnostic(bool, LogCompilation, false, \ 648266423Sjfv "Log compilation activity in detail to hotspot.log or LogFile") \ 649266423Sjfv \ 650266423Sjfv product(bool, PrintCompilation, false, \ 651266423Sjfv "Print compilations") \ 652266423Sjfv \ 653266423Sjfv diagnostic(bool, TraceNMethodInstalls, false, \ 654266423Sjfv "Trace nmethod intallation") \ 655266423Sjfv \ 656266423Sjfv diagnostic(bool, TraceOSRBreakpoint, false, \ 657266423Sjfv "Trace OSR Breakpoint ") \ 658266423Sjfv \ 659266423Sjfv diagnostic(bool, TraceCompileTriggered, false, \ 660266423Sjfv "Trace compile triggered") \ 661266423Sjfv \ 662266423Sjfv diagnostic(bool, TraceTriggers, false, \ 663266423Sjfv "Trace triggers") \ 664266423Sjfv \ 665266423Sjfv product(bool, AlwaysRestoreFPU, false, \ 666266423Sjfv "Restore the FPU control word after every JNI call (expensive)") \ 667266423Sjfv \ 668266423Sjfv notproduct(bool, PrintCompilation2, false, \ 669266423Sjfv "Print additional statistics per compilation") \ 670266423Sjfv \ 671266423Sjfv notproduct(bool, PrintAdapterHandlers, false, \ 672266423Sjfv "Print code generated for i2c/c2i adapters") \ 673266423Sjfv \ 674266423Sjfv develop(bool, PrintAssembly, false, \ 675266423Sjfv "Print assembly code") \ 676266423Sjfv \ 677266423Sjfv develop(bool, PrintNMethods, false, \ 678266423Sjfv "Print assembly code for nmethods when generated") \ 679266423Sjfv \ 680266423Sjfv develop(bool, PrintNativeNMethods, false, \ 681266423Sjfv "Print assembly code for native nmethods when generated") \ 682266423Sjfv \ 683266423Sjfv develop(bool, PrintDebugInfo, false, \ 684266423Sjfv "Print debug information for all nmethods when generated") \ 685266423Sjfv \ 686266423Sjfv develop(bool, PrintRelocations, false, \ 687266423Sjfv "Print relocation information for all nmethods when generated") \ 688266423Sjfv \ 689266423Sjfv develop(bool, PrintDependencies, false, \ 690266423Sjfv "Print dependency information for all nmethods when generated") \ 691266423Sjfv \ 692266423Sjfv develop(bool, PrintExceptionHandlers, false, \ 693266423Sjfv "Print exception handler tables for all nmethods when generated") \ 694266423Sjfv \ 695266423Sjfv develop(bool, InterceptOSException, false, \ 696266423Sjfv "Starts debugger when an implicit OS (e.g., NULL) " \ 697266423Sjfv "exception happens") \ 698266423Sjfv \ 699266423Sjfv notproduct(bool, PrintCodeCache, false, \ 700266423Sjfv "Print the compiled_code cache when exiting") \ 701266423Sjfv \ 702266423Sjfv develop(bool, PrintCodeCache2, false, \ 703266423Sjfv "Print detailed info on the compiled_code cache when exiting") \ 704266423Sjfv \ 705266423Sjfv develop(bool, PrintStubCode, false, \ 706266423Sjfv "Print generated stub code") \ 707266423Sjfv \ 708266423Sjfv product(bool, StackTraceInThrowable, true, \ 709266423Sjfv "Collect backtrace in throwable when exception happens") \ 710266423Sjfv \ 711266423Sjfv product(bool, OmitStackTraceInFastThrow, true, \ 712266423Sjfv "Omit backtraces for some 'hot' exceptions in optimized code") \ 713266423Sjfv \ 714266423Sjfv product(bool, ProfilerPrintByteCodeStatistics, false, \ 715266423Sjfv "Prints byte code statictics when dumping profiler output") \ 716266423Sjfv \ 717266423Sjfv product(bool, ProfilerRecordPC, false, \ 718266423Sjfv "Collects tick for each 16 byte interval of compiled code") \ 719266423Sjfv \ 720266423Sjfv product(bool, ProfileVM, false, \ 721266423Sjfv "Profiles ticks that fall within VM (either in the VM Thread " \ 722266423Sjfv "or VM code called through stubs)") \ 723266423Sjfv \ 724266423Sjfv product(bool, ProfileIntervals, false, \ 725266423Sjfv "Prints profiles for each interval (see ProfileIntervalsTicks)") \ 726266423Sjfv \ 727266423Sjfv notproduct(bool, ProfilerCheckIntervals, false, \ 728266423Sjfv "Collect and print info on spacing of profiler ticks") \ 729266423Sjfv \ 730266423Sjfv develop(bool, PrintJVMWarnings, false, \ 731266423Sjfv "Prints warnings for unimplemented JVM functions") \ 732266423Sjfv \ 733266423Sjfv notproduct(uintx, WarnOnStalledSpinLock, 0, \ 734266423Sjfv "Prints warnings for stalled SpinLocks") \ 735266423Sjfv \ 736266423Sjfv develop(bool, InitializeJavaLangSystem, true, \ 737266423Sjfv "Initialize java.lang.System - turn off for individual " \ 738266423Sjfv "method debugging") \ 739266423Sjfv \ 740266423Sjfv develop(bool, InitializeJavaLangString, true, \ 741266423Sjfv "Initialize java.lang.String - turn off for individual " \ 742266423Sjfv "method debugging") \ 743266423Sjfv \ 744266423Sjfv develop(bool, InitializeJavaLangExceptionsErrors, true, \ 745266423Sjfv "Initialize various error and exception classes - turn off for " \ 746266423Sjfv "individual method debugging") \ 747266423Sjfv \ 748266423Sjfv product(bool, RegisterFinalizersAtInit, true, \ 749266423Sjfv "Register finalizable objects at end of Object.<init> or " \ 750266423Sjfv "after allocation.") \ 751266423Sjfv \ 752266423Sjfv develop(bool, RegisterReferences, true, \ 753266423Sjfv "Tells whether the VM should register soft/weak/final/phantom " \ 754266423Sjfv "references") \ 755266423Sjfv \ 756266423Sjfv develop(bool, IgnoreRewrites, false, \ 757266423Sjfv "Supress rewrites of bytecodes in the oopmap generator. " \ 758266423Sjfv "This is unsafe!") \ 759266423Sjfv \ 760266423Sjfv develop(bool, PrintCodeCacheExtension, false, \ 761266423Sjfv "Print extension of code cache") \ 762266423Sjfv \ 763266423Sjfv develop(bool, UsePrivilegedStack, true, \ 764266423Sjfv "Enable the security JVM functions") \ 765266423Sjfv \ 766266423Sjfv develop(bool, IEEEPrecision, true, \ 767266423Sjfv "Enables IEEE precision (for INTEL only)") \ 768266423Sjfv \ 769266423Sjfv develop(bool, ProtectionDomainVerification, true, \ 770266423Sjfv "Verifies protection domain before resolution in system " \ 771266423Sjfv "dictionary") \ 772266423Sjfv \ 773266423Sjfv product(bool, ClassUnloading, true, \ 774266423Sjfv "Do unloading of classes") \ 775266423Sjfv \ 776266423Sjfv develop(bool, DisableStartThread, false, \ 777266423Sjfv "Disable starting of additional Java threads " \ 778266423Sjfv "(for debugging only)") \ 779266423Sjfv \ 780266423Sjfv develop(bool, MemProfiling, false, \ 781266423Sjfv "Write memory usage profiling to log file") \ 782266423Sjfv \ 783266423Sjfv notproduct(bool, PrintSystemDictionaryAtExit, false, \ 784266423Sjfv "Prints the system dictionary at exit") \ 785266423Sjfv \ 786266423Sjfv diagnostic(bool, UnsyncloadClass, false, \ 787266423Sjfv "Unstable: VM calls loadClass unsynchronized. Custom classloader "\ 788266423Sjfv "must call VM synchronized for findClass & defineClass") \ 789266423Sjfv \ 790266423Sjfv product_pd(bool, DontYieldALot, \ 791266423Sjfv "Throw away obvious excess yield calls (for SOLARIS only)") \ 792266423Sjfv \ 793266423Sjfv product_pd(bool, ConvertSleepToYield, \ 794266423Sjfv "Converts sleep(0) to thread yield " \ 795266423Sjfv "(may be off for SOLARIS to improve GUI)") \ 796266423Sjfv \ 797266423Sjfv product(bool, ConvertYieldToSleep, false, \ 798266423Sjfv "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ 799266423Sjfv "behavior (SOLARIS only)") \ 800266423Sjfv \ 801266423Sjfv product(bool, UseBoundThreads, true, \ 802266423Sjfv "Bind user level threads to kernel threads (for SOLARIS only)") \ 803266423Sjfv \ 804266423Sjfv develop(bool, UseDetachedThreads, true, \ 805266423Sjfv "Use detached threads that are recycled upon termination " \ 806266423Sjfv "(for SOLARIS only)") \ 807266423Sjfv \ 808266423Sjfv product(bool, UseLWPSynchronization, true, \ 809266423Sjfv "Use LWP-based instead of libthread-based synchronization " \ 810266423Sjfv "(SPARC only)") \ 811266423Sjfv \ 812266423Sjfv product(ccstr, SyncKnobs, "", \ 813266423Sjfv "(Unstable) Various monitor synchronization tunables") \ 814266423Sjfv \ 815266423Sjfv product(intx, EmitSync, 0, \ 816266423Sjfv "(Unsafe,Unstable) " \ 817266423Sjfv " Controls emission of inline sync fast-path code") \ 818266423Sjfv \ 819266423Sjfv product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ 820266423Sjfv \ 821266423Sjfv product(intx, Atomics, 0, \ 822266423Sjfv "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ 823266423Sjfv \ 824266423Sjfv product(intx, FenceInstruction, 0, \ 825266423Sjfv "(Unsafe,Unstable) Experimental") \ 826266423Sjfv \ 827266423Sjfv product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ 828266423Sjfv \ 829266423Sjfv product(intx, SyncVerbose, 0, "(Unstable)" ) \ 830266423Sjfv \ 831266423Sjfv product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ 832266423Sjfv \ 833266423Sjfv product(intx, hashCode, 0, \ 834266423Sjfv "(Unstable) select hashCode generation algorithm" ) \ 835266423Sjfv \ 836266423Sjfv product(intx, WorkAroundNPTLTimedWaitHang, 1, \ 837266423Sjfv "(Unstable, Linux-specific)" \ 838266423Sjfv " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ 839266423Sjfv \ 840266423Sjfv product(bool, FilterSpuriousWakeups , true, \ 841266423Sjfv "Prevent spurious or premature wakeups from object.wait" \ 842266423Sjfv "(Solaris only)") \ 843266423Sjfv \ 844266423Sjfv product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ 845266423Sjfv product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ 846266423Sjfv product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ 847266423Sjfv \ 848266423Sjfv develop(bool, UsePthreads, false, \ 849266423Sjfv "Use pthread-based instead of libthread-based synchronization " \ 850266423Sjfv "(SPARC only)") \ 851266423Sjfv \ 852266423Sjfv product(bool, AdjustConcurrency, false, \ 853266423Sjfv "call thr_setconcurrency at thread create time to avoid " \ 854266423Sjfv "LWP starvation on MP systems (For Solaris Only)") \ 855266423Sjfv \ 856266423Sjfv develop(bool, UpdateHotSpotCompilerFileOnError, true, \ 857266423Sjfv "Should the system attempt to update the compiler file when " \ 858266423Sjfv "an error occurs?") \ 859266423Sjfv \ 860266423Sjfv product(bool, ReduceSignalUsage, false, \ 861266423Sjfv "Reduce the use of OS signals in Java and/or the VM") \ 862266423Sjfv \ 863266423Sjfv notproduct(bool, ValidateMarkSweep, false, \ 864266423Sjfv "Do extra validation during MarkSweep collection") \ 865266423Sjfv \ 866266423Sjfv notproduct(bool, RecordMarkSweepCompaction, false, \ 867266423Sjfv "Enable GC-to-GC recording and querying of compaction during " \ 868266423Sjfv "MarkSweep") \ 869266423Sjfv \ 870266423Sjfv develop_pd(bool, ShareVtableStubs, \ 871266423Sjfv "Share vtable stubs (smaller code but worse branch prediction") \ 872266423Sjfv \ 873266423Sjfv develop(bool, LoadLineNumberTables, true, \ 874266423Sjfv "Tells whether the class file parser loads line number tables") \ 875266423Sjfv \ 876266423Sjfv develop(bool, LoadLocalVariableTables, true, \ 877266423Sjfv "Tells whether the class file parser loads local variable tables")\ 878266423Sjfv \ 879266423Sjfv develop(bool, LoadLocalVariableTypeTables, true, \ 880266423Sjfv "Tells whether the class file parser loads local variable type tables")\ 881266423Sjfv \ 882266423Sjfv product(bool, AllowUserSignalHandlers, false, \ 883266423Sjfv "Do not complain if the application installs signal handlers " \ 884266423Sjfv "(Solaris & Linux only)") \ 885266423Sjfv \ 886266423Sjfv product(bool, UseSignalChaining, true, \ 887266423Sjfv "Use signal-chaining to invoke signal handlers installed " \ 888266423Sjfv "by the application (Solaris & Linux only)") \ 889266423Sjfv \ 890266423Sjfv product(bool, UseAltSigs, false, \ 891266423Sjfv "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 892266423Sjfv "internal signals. (Solaris only)") \ 893266423Sjfv \ 894266423Sjfv product(bool, UseSpinning, false, \ 895266423Sjfv "Use spinning in monitor inflation and before entry") \ 896266423Sjfv \ 897266423Sjfv product(bool, PreSpinYield, false, \ 898266423Sjfv "Yield before inner spinning loop") \ 899266423Sjfv \ 900266423Sjfv product(bool, PostSpinYield, true, \ 901266423Sjfv "Yield after inner spinning loop") \ 902266423Sjfv \ 903266423Sjfv product(bool, AllowJNIEnvProxy, false, \ 904266423Sjfv "Allow JNIEnv proxies for jdbx") \ 905266423Sjfv \ 906266423Sjfv product(bool, JNIDetachReleasesMonitors, true, \ 907266423Sjfv "JNI DetachCurrentThread releases monitors owned by thread") \ 908266423Sjfv \ 909266423Sjfv product(bool, RestoreMXCSROnJNICalls, false, \ 910266423Sjfv "Restore MXCSR when returning from JNI calls") \ 911266423Sjfv \ 912266423Sjfv product(bool, CheckJNICalls, false, \ 913266423Sjfv "Verify all arguments to JNI calls") \ 914266423Sjfv \ 915266423Sjfv product(bool, UseFastJNIAccessors, true, \ 916266423Sjfv "Use optimized versions of Get<Primitive>Field") \ 917266423Sjfv \ 918266423Sjfv product(bool, EagerXrunInit, false, \ 919266423Sjfv "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 920266423Sjfv " but not all -Xrun libraries may support the state of the VM at this time") \ 921266423Sjfv \ 922266423Sjfv product(bool, PreserveAllAnnotations, false, \ 923266423Sjfv "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ 924266423Sjfv \ 925266423Sjfv develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 926266423Sjfv "Number of OutOfMemoryErrors preallocated with backtrace") \ 927266423Sjfv \ 928266423Sjfv product(bool, LazyBootClassLoader, true, \ 929266423Sjfv "Enable/disable lazy opening of boot class path entries") \ 930266423Sjfv \ 931266423Sjfv diagnostic(bool, UseIncDec, true, \ 932266423Sjfv "Use INC, DEC instructions on x86") \ 933266423Sjfv \ 934266423Sjfv product(bool, UseStoreImmI16, true, \ 935266423Sjfv "Use store immediate 16-bits value instruction on x86") \ 936266423Sjfv \ 937266423Sjfv product(bool, UseAddressNop, false, \ 938266423Sjfv "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ 939266423Sjfv \ 940266423Sjfv product(bool, UseXmmLoadAndClearUpper, true, \ 941266423Sjfv "Load low part of XMM register and clear upper part") \ 942266423Sjfv \ 943266423Sjfv product(bool, UseXmmRegToRegMoveAll, false, \ 944266423Sjfv "Copy all XMM register bits when moving value between registers") \ 945266423Sjfv \ 946266423Sjfv product(bool, UseXmmI2D, false, \ 947266423Sjfv "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ 948266423Sjfv \ 949266423Sjfv product(bool, UseXmmI2F, false, \ 950266423Sjfv "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ 951266423Sjfv \ 952266423Sjfv product(intx, FieldsAllocationStyle, 1, \ 953266423Sjfv "0 - type based with oops first, 1 - with oops last") \ 954266423Sjfv \ 955266423Sjfv product(bool, CompactFields, true, \ 956266423Sjfv "Allocate nonstatic fields in gaps between previous fields") \ 957266423Sjfv \ 958266423Sjfv notproduct(bool, PrintCompactFieldsSavings, false, \ 959266423Sjfv "Print how many words were saved with CompactFields") \ 960266423Sjfv \ 961266423Sjfv product(bool, UseBiasedLocking, true, \ 962266423Sjfv "Enable biased locking in JVM") \ 963266423Sjfv \ 964266423Sjfv product(intx, BiasedLockingStartupDelay, 4000, \ 965266423Sjfv "Number of milliseconds to wait before enabling biased locking") \ 966266423Sjfv \ 967266423Sjfv diagnostic(bool, PrintBiasedLockingStatistics, false, \ 968266423Sjfv "Print statistics of biased locking in JVM") \ 969266423Sjfv \ 970266423Sjfv product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 971266423Sjfv "Threshold of number of revocations per type to try to " \ 972266423Sjfv "rebias all objects in the heap of that type") \ 973266423Sjfv \ 974266423Sjfv product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 975266423Sjfv "Threshold of number of revocations per type to permanently " \ 976266423Sjfv "revoke biases of all objects in the heap of that type") \ 977266423Sjfv \ 978266423Sjfv product(intx, BiasedLockingDecayTime, 25000, \ 979266423Sjfv "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 980266423Sjfv "type after previous bulk rebias") \ 981266423Sjfv \ 982266423Sjfv /* tracing */ \ 983266423Sjfv \ 984266423Sjfv notproduct(bool, TraceRuntimeCalls, false, \ 985266423Sjfv "Trace run-time calls") \ 986266423Sjfv \ 987266423Sjfv develop(bool, TraceJNICalls, false, \ 988266423Sjfv "Trace JNI calls") \ 989266423Sjfv \ 990266423Sjfv notproduct(bool, TraceJVMCalls, false, \ 991266423Sjfv "Trace JVM calls") \ 992266423Sjfv \ 993266423Sjfv product(ccstr, TraceJVMTI, "", \ 994266423Sjfv "Trace flags for JVMTI functions and events") \ 995266423Sjfv \ 996266423Sjfv /* This option can change an EMCP method into an obsolete method. */ \ 997266423Sjfv /* This can affect tests that except specific methods to be EMCP. */ \ 998266423Sjfv /* This option should be used with caution. */ \ 999266423Sjfv product(bool, StressLdcRewrite, false, \ 1000266423Sjfv "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1001266423Sjfv \ 1002266423Sjfv product(intx, TraceRedefineClasses, 0, \ 1003266423Sjfv "Trace level for JVMTI RedefineClasses") \ 1004266423Sjfv \ 1005266423Sjfv /* change to false by default sometime after Mustang */ \ 1006266423Sjfv product(bool, VerifyMergedCPBytecodes, true, \ 1007266423Sjfv "Verify bytecodes after RedefineClasses constant pool merging") \ 1008266423Sjfv \ 1009266423Sjfv develop(bool, TraceJNIHandleAllocation, false, \ 1010266423Sjfv "Trace allocation/deallocation of JNI handle blocks") \ 1011266423Sjfv \ 1012266423Sjfv develop(bool, TraceThreadEvents, false, \ 1013266423Sjfv "Trace all thread events") \ 1014266423Sjfv \ 1015266423Sjfv develop(bool, TraceBytecodes, false, \ 1016266423Sjfv "Trace bytecode execution") \ 1017266423Sjfv \ 1018266423Sjfv develop(bool, TraceClassInitialization, false, \ 1019266423Sjfv "Trace class initialization") \ 1020266423Sjfv \ 1021266423Sjfv develop(bool, TraceExceptions, false, \ 1022266423Sjfv "Trace exceptions") \ 1023266423Sjfv \ 1024266423Sjfv develop(bool, TraceICs, false, \ 1025266423Sjfv "Trace inline cache changes") \ 1026266423Sjfv \ 1027266423Sjfv notproduct(bool, TraceInvocationCounterOverflow, false, \ 1028266423Sjfv "Trace method invocation counter overflow") \ 1029266423Sjfv \ 1030266423Sjfv develop(bool, TraceInlineCacheClearing, false, \ 1031266423Sjfv "Trace clearing of inline caches in nmethods") \ 1032266423Sjfv \ 1033266423Sjfv develop(bool, TraceDependencies, false, \ 1034266423Sjfv "Trace dependencies") \ 1035266423Sjfv \ 1036266423Sjfv develop(bool, VerifyDependencies, trueInDebug, \ 1037266423Sjfv "Exercise and verify the compilation dependency mechanism") \ 1038266423Sjfv \ 1039266423Sjfv develop(bool, TraceNewOopMapGeneration, false, \ 1040266423Sjfv "Trace OopMapGeneration") \ 1041266423Sjfv \ 1042266423Sjfv develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1043266423Sjfv "Trace OopMapGeneration: print detailed cell states") \ 1044266423Sjfv \ 1045266423Sjfv develop(bool, TimeOopMap, false, \ 1046266423Sjfv "Time calls to GenerateOopMap::compute_map() in sum") \ 1047266423Sjfv \ 1048266423Sjfv develop(bool, TimeOopMap2, false, \ 1049266423Sjfv "Time calls to GenerateOopMap::compute_map() individually") \ 1050266423Sjfv \ 1051266423Sjfv develop(bool, TraceMonitorMismatch, false, \ 1052266423Sjfv "Trace monitor matching failures during OopMapGeneration") \ 1053266423Sjfv \ 1054266423Sjfv develop(bool, TraceOopMapRewrites, false, \ 1055266423Sjfv "Trace rewritting of method oops during oop map generation") \ 1056266423Sjfv \ 1057266423Sjfv develop(bool, TraceSafepoint, false, \ 1058266423Sjfv "Trace safepoint operations") \ 1059266423Sjfv \ 1060266423Sjfv develop(bool, TraceICBuffer, false, \ 1061266423Sjfv "Trace usage of IC buffer") \ 1062266423Sjfv \ 1063266423Sjfv develop(bool, TraceCompiledIC, false, \ 1064266423Sjfv "Trace changes of compiled IC") \ 1065266423Sjfv \ 1066266423Sjfv notproduct(bool, TraceZapDeadLocals, false, \ 1067266423Sjfv "Trace zapping dead locals") \ 1068266423Sjfv \ 1069266423Sjfv develop(bool, TraceStartupTime, false, \ 1070266423Sjfv "Trace setup time") \ 1071266423Sjfv \ 1072266423Sjfv develop(bool, TraceHPI, false, \ 1073266423Sjfv "Trace Host Porting Interface (HPI)") \ 1074266423Sjfv \ 1075266423Sjfv product(ccstr, HPILibPath, NULL, \ 1076266423Sjfv "Specify alternate path to HPI library") \ 1077266423Sjfv \ 1078266423Sjfv develop(bool, TraceProtectionDomainVerification, false, \ 1079266423Sjfv "Trace protection domain verifcation") \ 1080266423Sjfv \ 1081266423Sjfv develop(bool, TraceClearedExceptions, false, \ 1082266423Sjfv "Prints when an exception is forcibly cleared") \ 1083266423Sjfv \ 1084266423Sjfv product(bool, TraceClassResolution, false, \ 1085266423Sjfv "Trace all constant pool resolutions (for debugging)") \ 1086266423Sjfv \ 1087266423Sjfv product(bool, TraceBiasedLocking, false, \ 1088266423Sjfv "Trace biased locking in JVM") \ 1089266423Sjfv \ 1090266423Sjfv product(bool, TraceMonitorInflation, false, \ 1091266423Sjfv "Trace monitor inflation in JVM") \ 1092266423Sjfv \ 1093266423Sjfv /* assembler */ \ 1094266423Sjfv product(bool, Use486InstrsOnly, false, \ 1095266423Sjfv "Use 80486 Compliant instruction subset") \ 1096266423Sjfv \ 1097266423Sjfv /* gc */ \ 1098266423Sjfv \ 1099266423Sjfv product(bool, UseSerialGC, false, \ 1100266423Sjfv "Tells whether the VM should use serial garbage collector") \ 1101266423Sjfv \ 1102266423Sjfv product(bool, UseParallelGC, false, \ 1103266423Sjfv "Use the Parallel Scavenge garbage collector") \ 1104266423Sjfv \ 1105266423Sjfv product(bool, UseParallelOldGC, false, \ 1106266423Sjfv "Use the Parallel Old garbage collector") \ 1107266423Sjfv \ 1108266423Sjfv product(bool, UseParallelOldGCCompacting, true, \ 1109266423Sjfv "In the Parallel Old garbage collector use parallel compaction") \ 1110266423Sjfv \ 1111266423Sjfv product(bool, UseParallelDensePrefixUpdate, true, \ 1112266423Sjfv "In the Parallel Old garbage collector use parallel dense" \ 1113266423Sjfv " prefix update") \ 1114266423Sjfv \ 1115266423Sjfv develop(bool, UseParallelOldGCChunkPointerCalc, true, \ 1116266423Sjfv "In the Parallel Old garbage collector use chucks to calculate" \ 1117266423Sjfv " new object locations") \ 1118266423Sjfv \ 1119266423Sjfv product(uintx, HeapMaximumCompactionInterval, 20, \ 1120266423Sjfv "How often should we maximally compact the heap (not allowing " \ 1121266423Sjfv "any dead space)") \ 1122266423Sjfv \ 1123266423Sjfv product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1124266423Sjfv "The collection count for the first maximum compaction") \ 1125266423Sjfv \ 1126266423Sjfv product(bool, UseMaximumCompactionOnSystemGC, true, \ 1127266423Sjfv "In the Parallel Old garbage collector maximum compaction for " \ 1128266423Sjfv "a system GC") \ 1129266423Sjfv \ 1130266423Sjfv product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1131266423Sjfv "The mean used by the par compact dead wood" \ 1132266423Sjfv "limiter (a number between 0-100).") \ 1133266423Sjfv \ 1134266423Sjfv product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1135266423Sjfv "The standard deviation used by the par compact dead wood" \ 1136266423Sjfv "limiter (a number between 0-100).") \ 1137266423Sjfv \ 1138266423Sjfv product(bool, UseParallelOldGCDensePrefix, true, \ 1139266423Sjfv "Use a dense prefix with the Parallel Old garbage collector") \ 1140266423Sjfv \ 1141266423Sjfv product(uintx, ParallelGCThreads, 0, \ 1142266423Sjfv "Number of parallel threads parallel gc will use") \ 1143266423Sjfv \ 1144266423Sjfv product(uintx, ParallelCMSThreads, 0, \ 1145266423Sjfv "Max number of threads CMS will use for concurrent work") \ 1146266423Sjfv \ 1147266423Sjfv develop(bool, VerifyParallelOldWithMarkSweep, false, \ 1148266423Sjfv "Use the MarkSweep code to verify phases of Parallel Old") \ 1149266423Sjfv \ 1150266423Sjfv develop(uintx, VerifyParallelOldWithMarkSweepInterval, 1, \ 1151266423Sjfv "Interval at which the MarkSweep code is used to verify " \ 1152266423Sjfv "phases of Parallel Old") \ 1153266423Sjfv \ 1154266423Sjfv develop(bool, ParallelOldMTUnsafeMarkBitMap, false, \ 1155266423Sjfv "Use the Parallel Old MT unsafe in marking the bitmap") \ 1156266423Sjfv \ 1157266423Sjfv develop(bool, ParallelOldMTUnsafeUpdateLiveData, false, \ 1158266423Sjfv "Use the Parallel Old MT unsafe in update of live size") \ 1159266423Sjfv \ 1160266423Sjfv develop(bool, TraceChunkTasksQueuing, false, \ 1161266423Sjfv "Trace the queuing of the chunk tasks") \ 1162266423Sjfv \ 1163266423Sjfv product(uintx, YoungPLABSize, 4096, \ 1164266423Sjfv "Size of young gen promotion labs (in HeapWords)") \ 1165266423Sjfv \ 1166266423Sjfv product(uintx, OldPLABSize, 1024, \ 1167266423Sjfv "Size of old gen promotion labs (in HeapWords)") \ 1168266423Sjfv \ 1169266423Sjfv product(uintx, GCTaskTimeStampEntries, 200, \ 1170266423Sjfv "Number of time stamp entries per gc worker thread") \ 1171266423Sjfv \ 1172266423Sjfv product(bool, AlwaysTenure, false, \ 1173266423Sjfv "Always tenure objects in eden. (ParallelGC only)") \ 1174266423Sjfv \ 1175266423Sjfv product(bool, NeverTenure, false, \ 1176266423Sjfv "Never tenure objects in eden, May tenure on overflow" \ 1177266423Sjfv " (ParallelGC only)") \ 1178266423Sjfv \ 1179266423Sjfv product(bool, ScavengeBeforeFullGC, true, \ 1180266423Sjfv "Scavenge youngest generation before each full GC," \ 1181266423Sjfv " used with UseParallelGC") \ 1182266423Sjfv \ 1183266423Sjfv develop(bool, ScavengeWithObjectsInToSpace, false, \ 1184266423Sjfv "Allow scavenges to occur when to_space contains objects.") \ 1185266423Sjfv \ 1186266423Sjfv product(bool, UseConcMarkSweepGC, false, \ 1187266423Sjfv "Use Concurrent Mark-Sweep GC in the old generation") \ 1188266423Sjfv \ 1189266423Sjfv product(bool, ExplicitGCInvokesConcurrent, false, \ 1190266423Sjfv "A System.gc() request invokes a concurrent collection;" \ 1191266423Sjfv " (effective only when UseConcMarkSweepGC)") \ 1192266423Sjfv \ 1193266423Sjfv product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1194266423Sjfv "A System.gc() request invokes a concurrent collection and" \ 1195266423Sjfv " also unloads classes during such a concurrent gc cycle " \ 1196266423Sjfv " (effective only when UseConcMarkSweepGC)") \ 1197266423Sjfv \ 1198266423Sjfv develop(bool, UseCMSAdaptiveFreeLists, true, \ 1199266423Sjfv "Use Adaptive Free Lists in the CMS generation") \ 1200266423Sjfv \ 1201266423Sjfv develop(bool, UseAsyncConcMarkSweepGC, true, \ 1202266423Sjfv "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1203266423Sjfv \ 1204266423Sjfv develop(bool, RotateCMSCollectionTypes, false, \ 1205266423Sjfv "Rotate the CMS collections among concurrent and STW") \ 1206266423Sjfv \ 1207266423Sjfv product(bool, UseCMSBestFit, true, \ 1208266423Sjfv "Use CMS best fit allocation strategy") \ 1209266423Sjfv \ 1210266423Sjfv product(bool, UseCMSCollectionPassing, true, \ 1211266423Sjfv "Use passing of collection from background to foreground") \ 1212266423Sjfv \ 1213266423Sjfv product(bool, UseParNewGC, false, \ 1214266423Sjfv "Use parallel threads in the new generation.") \ 1215266423Sjfv \ 1216266423Sjfv product(bool, ParallelGCVerbose, false, \ 1217266423Sjfv "Verbose output for parallel GC.") \ 1218266423Sjfv \ 1219266423Sjfv product(intx, ParallelGCBufferWastePct, 10, \ 1220266423Sjfv "wasted fraction of parallel allocation buffer.") \ 1221266423Sjfv \ 1222266423Sjfv product(bool, ParallelGCRetainPLAB, true, \ 1223266423Sjfv "Retain parallel allocation buffers across scavenges.") \ 1224266423Sjfv \ 1225266423Sjfv product(intx, TargetPLABWastePct, 10, \ 1226266423Sjfv "target wasted space in last buffer as pct of overall allocation")\ 1227266423Sjfv \ 1228266423Sjfv product(uintx, PLABWeight, 75, \ 1229266423Sjfv "Percentage (0-100) used to weight the current sample when" \ 1230266423Sjfv "computing exponentially decaying average for ResizePLAB.") \ 1231266423Sjfv \ 1232266423Sjfv product(bool, ResizePLAB, true, \ 1233266423Sjfv "Dynamically resize (survivor space) promotion labs") \ 1234266423Sjfv \ 1235266423Sjfv product(bool, PrintPLAB, false, \ 1236266423Sjfv "Print (survivor space) promotion labs sizing decisions") \ 1237266423Sjfv \ 1238266423Sjfv product(intx, ParGCArrayScanChunk, 50, \ 1239266423Sjfv "Scan a subset and push remainder, if array is bigger than this") \ 1240266423Sjfv \ 1241266423Sjfv product(intx, ParGCDesiredObjsFromOverflowList, 20, \ 1242266423Sjfv "The desired number of objects to claim from the overflow list") \ 1243266423Sjfv \ 1244266423Sjfv product(uintx, CMSParPromoteBlocksToClaim, 50, \ 1245266423Sjfv "Number of blocks to attempt to claim when refilling CMS LAB for "\ 1246266423Sjfv "parallel GC.") \ 1247266423Sjfv \ 1248266423Sjfv product(bool, AlwaysPreTouch, false, \ 1249266423Sjfv "It forces all freshly committed pages to be pre-touched.") \ 1250266423Sjfv \ 1251266423Sjfv product(bool, CMSUseOldDefaults, false, \ 1252266423Sjfv "A flag temporarily introduced to allow reverting to some older" \ 1253266423Sjfv "default settings; older as of 6.0 ") \ 1254266423Sjfv \ 1255266423Sjfv product(intx, CMSYoungGenPerWorker, 16*M, \ 1256266423Sjfv "The amount of young gen chosen by default per GC worker " \ 1257266423Sjfv "thread available ") \ 1258266423Sjfv \ 1259266423Sjfv product(bool, CMSIncrementalMode, false, \ 1260266423Sjfv "Whether CMS GC should operate in \"incremental\" mode") \ 1261266423Sjfv \ 1262266423Sjfv product(uintx, CMSIncrementalDutyCycle, 10, \ 1263266423Sjfv "CMS incremental mode duty cycle (a percentage, 0-100). If" \ 1264266423Sjfv "CMSIncrementalPacing is enabled, then this is just the initial" \ 1265266423Sjfv "value") \ 1266266423Sjfv \ 1267266423Sjfv product(bool, CMSIncrementalPacing, true, \ 1268266423Sjfv "Whether the CMS incremental mode duty cycle should be " \ 1269266423Sjfv "automatically adjusted") \ 1270266423Sjfv \ 1271266423Sjfv product(uintx, CMSIncrementalDutyCycleMin, 0, \ 1272266423Sjfv "Lower bound on the duty cycle when CMSIncrementalPacing is" \ 1273266423Sjfv "enabled (a percentage, 0-100).") \ 1274266423Sjfv \ 1275266423Sjfv product(uintx, CMSIncrementalSafetyFactor, 10, \ 1276266423Sjfv "Percentage (0-100) used to add conservatism when computing the" \ 1277266423Sjfv "duty cycle.") \ 1278266423Sjfv \ 1279266423Sjfv product(uintx, CMSIncrementalOffset, 0, \ 1280266423Sjfv "Percentage (0-100) by which the CMS incremental mode duty cycle" \ 1281266423Sjfv "is shifted to the right within the period between young GCs") \ 1282266423Sjfv \ 1283266423Sjfv product(uintx, CMSExpAvgFactor, 25, \ 1284266423Sjfv "Percentage (0-100) used to weight the current sample when" \ 1285266423Sjfv "computing exponential averages for CMS statistics.") \ 1286266423Sjfv \ 1287266423Sjfv product(uintx, CMS_FLSWeight, 50, \ 1288266423Sjfv "Percentage (0-100) used to weight the current sample when" \ 1289266423Sjfv "computing exponentially decating averages for CMS FLS statistics.") \ 1290266423Sjfv \ 1291266423Sjfv product(uintx, CMS_FLSPadding, 2, \ 1292266423Sjfv "The multiple of deviation from mean to use for buffering" \ 1293266423Sjfv "against volatility in free list demand.") \ 1294266423Sjfv \ 1295266423Sjfv product(uintx, FLSCoalescePolicy, 2, \ 1296266423Sjfv "CMS: Aggression level for coalescing, increasing from 0 to 4") \ 1297266423Sjfv \ 1298266423Sjfv product(uintx, CMS_SweepWeight, 50, \ 1299266423Sjfv "Percentage (0-100) used to weight the current sample when" \ 1300266423Sjfv "computing exponentially decaying average for inter-sweep duration.") \ 1301266423Sjfv \ 1302266423Sjfv product(uintx, CMS_SweepPadding, 2, \ 1303266423Sjfv "The multiple of deviation from mean to use for buffering" \ 1304266423Sjfv "against volatility in inter-sweep duration.") \ 1305266423Sjfv \ 1306266423Sjfv product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1307266423Sjfv "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1308266423Sjfv " duration exceeds this threhold in milliseconds") \ 1309266423Sjfv \ 1310266423Sjfv develop(bool, CMSTraceIncrementalMode, false, \ 1311266423Sjfv "Trace CMS incremental mode") \ 1312266423Sjfv \ 1313266423Sjfv develop(bool, CMSTraceIncrementalPacing, false, \ 1314266423Sjfv "Trace CMS incremental mode pacing computation") \ 1315266423Sjfv \ 1316266423Sjfv develop(bool, CMSTraceThreadState, false, \ 1317266423Sjfv "Trace the CMS thread state (enable the trace_state() method)") \ 1318266423Sjfv \ 1319266423Sjfv product(bool, CMSClassUnloadingEnabled, false, \ 1320266423Sjfv "Whether class unloading enabled when using CMS GC") \ 1321266423Sjfv \ 1322266423Sjfv product(bool, CMSCompactWhenClearAllSoftRefs, true, \ 1323266423Sjfv "Compact when asked to collect CMS gen with clear_all_soft_refs") \ 1324266423Sjfv \ 1325266423Sjfv product(bool, UseCMSCompactAtFullCollection, true, \ 1326266423Sjfv "Use mark sweep compact at full collections") \ 1327266423Sjfv \ 1328266423Sjfv product(uintx, CMSFullGCsBeforeCompaction, 0, \ 1329266423Sjfv "Number of CMS full collection done before compaction if > 0") \ 1330266423Sjfv \ 1331266423Sjfv develop(intx, CMSDictionaryChoice, 0, \ 1332266423Sjfv "Use BinaryTreeDictionary as default in the CMS generation") \ 1333266423Sjfv \ 1334266423Sjfv product(uintx, CMSIndexedFreeListReplenish, 4, \ 1335266423Sjfv "Replenish and indexed free list with this number of chunks") \ 1336266423Sjfv \ 1337266423Sjfv product(bool, CMSLoopWarn, false, \ 1338266423Sjfv "Warn in case of excessive CMS looping") \ 1339266423Sjfv \ 1340266423Sjfv develop(bool, CMSOverflowEarlyRestoration, false, \ 1341266423Sjfv "Whether preserved marks should be restored early") \ 1342266423Sjfv \ 1343266423Sjfv product(uintx, CMSMarkStackSize, 32*K, \ 1344266423Sjfv "Size of CMS marking stack") \ 1345266423Sjfv \ 1346266423Sjfv product(uintx, CMSMarkStackSizeMax, 4*M, \ 1347266423Sjfv "Max size of CMS marking stack") \ 1348266423Sjfv \ 1349266423Sjfv notproduct(bool, CMSMarkStackOverflowALot, false, \ 1350266423Sjfv "Whether we should simulate frequent marking stack / work queue" \ 1351266423Sjfv " overflow") \ 1352266423Sjfv \ 1353266423Sjfv notproduct(intx, CMSMarkStackOverflowInterval, 1000, \ 1354266423Sjfv "A per-thread `interval' counter that determines how frequently" \ 1355266423Sjfv " we simulate overflow; a smaller number increases frequency") \ 1356266423Sjfv \ 1357266423Sjfv product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1358266423Sjfv "(Temporary, subject to experimentation)" \ 1359266423Sjfv "Maximum number of abortable preclean iterations, if > 0") \ 1360266423Sjfv \ 1361266423Sjfv product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1362266423Sjfv "(Temporary, subject to experimentation)" \ 1363266423Sjfv "Maximum time in abortable preclean in ms") \ 1364266423Sjfv \ 1365266423Sjfv product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1366266423Sjfv "(Temporary, subject to experimentation)" \ 1367266423Sjfv "Nominal minimum work per abortable preclean iteration") \ 1368266423Sjfv \ 1369266423Sjfv product(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1370266423Sjfv "(Temporary, subject to experimentation)" \ 1371266423Sjfv " Time that we sleep between iterations when not given" \ 1372266423Sjfv " enough work per iteration") \ 1373266423Sjfv \ 1374266423Sjfv product(uintx, CMSRescanMultiple, 32, \ 1375266423Sjfv "Size (in cards) of CMS parallel rescan task") \ 1376266423Sjfv \ 1377266423Sjfv product(uintx, CMSConcMarkMultiple, 32, \ 1378266423Sjfv "Size (in cards) of CMS concurrent MT marking task") \ 1379266423Sjfv \ 1380266423Sjfv product(uintx, CMSRevisitStackSize, 1*M, \ 1381266423Sjfv "Size of CMS KlassKlass revisit stack") \ 1382266423Sjfv \ 1383266423Sjfv product(bool, CMSAbortSemantics, false, \ 1384266423Sjfv "Whether abort-on-overflow semantics is implemented") \ 1385266423Sjfv \ 1386266423Sjfv product(bool, CMSParallelRemarkEnabled, true, \ 1387266423Sjfv "Whether parallel remark enabled (only if ParNewGC)") \ 1388266423Sjfv \ 1389266423Sjfv product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1390266423Sjfv "Whether parallel remark of survivor space" \ 1391266423Sjfv " enabled (effective only if CMSParallelRemarkEnabled)") \ 1392266423Sjfv \ 1393266423Sjfv product(bool, CMSPLABRecordAlways, true, \ 1394266423Sjfv "Whether to always record survivor space PLAB bdries" \ 1395266423Sjfv " (effective only if CMSParallelSurvivorRemarkEnabled)") \ 1396266423Sjfv \ 1397266423Sjfv product(bool, CMSConcurrentMTEnabled, true, \ 1398266423Sjfv "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ 1399266423Sjfv \ 1400266423Sjfv product(bool, CMSPermGenPrecleaningEnabled, true, \ 1401266423Sjfv "Whether concurrent precleaning enabled in perm gen" \ 1402266423Sjfv " (effective only when CMSPrecleaningEnabled is true)") \ 1403266423Sjfv \ 1404266423Sjfv product(bool, CMSPrecleaningEnabled, true, \ 1405266423Sjfv "Whether concurrent precleaning enabled") \ 1406266423Sjfv \ 1407266423Sjfv product(uintx, CMSPrecleanIter, 3, \ 1408266423Sjfv "Maximum number of precleaning iteration passes") \ 1409266423Sjfv \ 1410266423Sjfv product(uintx, CMSPrecleanNumerator, 2, \ 1411266423Sjfv "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1412266423Sjfv " ratio") \ 1413266423Sjfv \ 1414266423Sjfv product(uintx, CMSPrecleanDenominator, 3, \ 1415266423Sjfv "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1416266423Sjfv " ratio") \ 1417266423Sjfv \ 1418266423Sjfv product(bool, CMSPrecleanRefLists1, true, \ 1419266423Sjfv "Preclean ref lists during (initial) preclean phase") \ 1420266423Sjfv \ 1421266423Sjfv product(bool, CMSPrecleanRefLists2, false, \ 1422266423Sjfv "Preclean ref lists during abortable preclean phase") \ 1423266423Sjfv \ 1424266423Sjfv product(bool, CMSPrecleanSurvivors1, false, \ 1425266423Sjfv "Preclean survivors during (initial) preclean phase") \ 1426266423Sjfv \ 1427266423Sjfv product(bool, CMSPrecleanSurvivors2, true, \ 1428266423Sjfv "Preclean survivors during abortable preclean phase") \ 1429266423Sjfv \ 1430266423Sjfv product(uintx, CMSPrecleanThreshold, 1000, \ 1431266423Sjfv "Don't re-iterate if #dirty cards less than this") \ 1432266423Sjfv \ 1433266423Sjfv product(bool, CMSCleanOnEnter, true, \ 1434266423Sjfv "Clean-on-enter optimization for reducing number of dirty cards") \ 1435266423Sjfv \ 1436266423Sjfv product(uintx, CMSRemarkVerifyVariant, 1, \ 1437266423Sjfv "Choose variant (1,2) of verification following remark") \ 1438266423Sjfv \ 1439266423Sjfv product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1440266423Sjfv "If Eden used is below this value, don't try to schedule remark") \ 1441266423Sjfv \ 1442266423Sjfv product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1443266423Sjfv "The Eden occupancy % at which to try and schedule remark pause") \ 1444266423Sjfv \ 1445266423Sjfv product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1446266423Sjfv "Start sampling Eden top at least before yg occupancy reaches" \ 1447266423Sjfv " 1/<ratio> of the size at which we plan to schedule remark") \ 1448266423Sjfv \ 1449266423Sjfv product(uintx, CMSSamplingGrain, 16*K, \ 1450266423Sjfv "The minimum distance between eden samples for CMS (see above)") \ 1451266423Sjfv \ 1452266423Sjfv product(bool, CMSScavengeBeforeRemark, false, \ 1453266423Sjfv "Attempt scavenge before the CMS remark step") \ 1454266423Sjfv \ 1455266423Sjfv develop(bool, CMSTraceSweeper, false, \ 1456266423Sjfv "Trace some actions of the CMS sweeper") \ 1457266423Sjfv \ 1458266423Sjfv product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1459266423Sjfv "Don't drain below this size per parallel worker/thief") \ 1460266423Sjfv \ 1461266423Sjfv product(intx, CMSWaitDuration, 2000, \ 1462266423Sjfv "Time in milliseconds that CMS thread waits for young GC") \ 1463266423Sjfv \ 1464266423Sjfv product(bool, CMSYield, true, \ 1465266423Sjfv "Yield between steps of concurrent mark & sweep") \ 1466266423Sjfv \ 1467266423Sjfv product(uintx, CMSBitMapYieldQuantum, 10*M, \ 1468266423Sjfv "Bitmap operations should process at most this many bits" \ 1469266423Sjfv "between yields") \ 1470266423Sjfv \ 1471266423Sjfv diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1472266423Sjfv "Verify that all refs across the FLS boundary " \ 1473266423Sjfv " are to valid objects") \ 1474266423Sjfv \ 1475266423Sjfv diagnostic(bool, FLSVerifyLists, false, \ 1476266423Sjfv "Do lots of (expensive) FreeListSpace verification") \ 1477266423Sjfv \ 1478266423Sjfv diagnostic(bool, FLSVerifyIndexTable, false, \ 1479266423Sjfv "Do lots of (expensive) FLS index table verification") \ 1480266423Sjfv \ 1481266423Sjfv develop(bool, FLSVerifyDictionary, false, \ 1482266423Sjfv "Do lots of (expensive) FLS dictionary verification") \ 1483266423Sjfv \ 1484266423Sjfv develop(bool, VerifyBlockOffsetArray, false, \ 1485266423Sjfv "Do (expensive!) block offset array verification") \ 1486266423Sjfv \ 1487266423Sjfv product(bool, BlockOffsetArrayUseUnallocatedBlock, trueInDebug, \ 1488266423Sjfv "Maintain _unallocated_block in BlockOffsetArray" \ 1489266423Sjfv " (currently applicable only to CMS collector)") \ 1490266423Sjfv \ 1491266423Sjfv develop(bool, TraceCMSState, false, \ 1492266423Sjfv "Trace the state of the CMS collection") \ 1493266423Sjfv \ 1494266423Sjfv product(intx, RefDiscoveryPolicy, 0, \ 1495266423Sjfv "Whether reference-based(0) or referent-based(1)") \ 1496266423Sjfv \ 1497266423Sjfv product(bool, ParallelRefProcEnabled, false, \ 1498266423Sjfv "Enable parallel reference processing whenever possible") \ 1499266423Sjfv \ 1500266423Sjfv product(bool, ParallelRefProcBalancingEnabled, true, \ 1501266423Sjfv "Enable balancing of reference processing queues") \ 1502266423Sjfv \ 1503266423Sjfv product(intx, CMSTriggerRatio, 80, \ 1504266423Sjfv "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1505266423Sjfv " allocated before a CMS collection cycle commences") \ 1506266423Sjfv \ 1507266423Sjfv product(intx, CMSBootstrapOccupancy, 50, \ 1508266423Sjfv "Percentage CMS generation occupancy at which to " \ 1509266423Sjfv " initiate CMS collection for bootstrapping collection stats") \ 1510266423Sjfv \ 1511266423Sjfv product(intx, CMSInitiatingOccupancyFraction, -1, \ 1512266423Sjfv "Percentage CMS generation occupancy to start a CMS collection " \ 1513266423Sjfv " cycle (A negative value means that CMSTirggerRatio is used)") \ 1514266423Sjfv \ 1515266423Sjfv product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1516266423Sjfv "Only use occupancy as a crierion for starting a CMS collection") \ 1517266423Sjfv \ 1518266423Sjfv develop(bool, CMSTestInFreeList, false, \ 1519266423Sjfv "Check if the coalesced range is already in the " \ 1520266423Sjfv "free lists as claimed.") \ 1521266423Sjfv \ 1522266423Sjfv notproduct(bool, CMSVerifyReturnedBytes, false, \ 1523266423Sjfv "Check that all the garbage collected was returned to the " \ 1524266423Sjfv "free lists.") \ 1525266423Sjfv \ 1526266423Sjfv notproduct(bool, ScavengeALot, false, \ 1527266423Sjfv "Force scavenge at every Nth exit from the runtime system " \ 1528266423Sjfv "(N=ScavengeALotInterval)") \ 1529266423Sjfv \ 1530266423Sjfv develop(bool, FullGCALot, false, \ 1531266423Sjfv "Force full gc at every Nth exit from the runtime system " \ 1532266423Sjfv "(N=FullGCALotInterval)") \ 1533266423Sjfv \ 1534266423Sjfv notproduct(bool, GCALotAtAllSafepoints, false, \ 1535266423Sjfv "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1536266423Sjfv \ 1537266423Sjfv product(bool, HandlePromotionFailure, true, \ 1538266423Sjfv "The youngest generation collection does not require" \ 1539266423Sjfv " a guarantee of full promotion of all live objects.") \ 1540266423Sjfv \ 1541266423Sjfv notproduct(bool, PromotionFailureALot, false, \ 1542266423Sjfv "Use promotion failure handling on every youngest generation " \ 1543266423Sjfv "collection") \ 1544266423Sjfv \ 1545266423Sjfv develop(uintx, PromotionFailureALotCount, 1000, \ 1546266423Sjfv "Number of promotion failures occurring at ParGCAllocBuffer" \ 1547266423Sjfv "refill attempts (ParNew) or promotion attempts " \ 1548266423Sjfv "(other young collectors) ") \ 1549266423Sjfv \ 1550266423Sjfv develop(uintx, PromotionFailureALotInterval, 5, \ 1551266423Sjfv "Total collections between promotion failures alot") \ 1552266423Sjfv \ 1553266423Sjfv develop(intx, WorkStealingSleepMillis, 1, \ 1554266423Sjfv "Sleep time when sleep is used for yields") \ 1555266423Sjfv \ 1556266423Sjfv develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \ 1557266423Sjfv "Number of yields before a sleep is done during workstealing") \ 1558266423Sjfv \ 1559266423Sjfv product(uintx, PreserveMarkStackSize, 40, \ 1560266423Sjfv "Size for stack used in promotion failure handling") \ 1561266423Sjfv \ 1562266423Sjfv product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 1563266423Sjfv \ 1564266423Sjfv product_pd(bool, ResizeTLAB, \ 1565266423Sjfv "Dynamically resize tlab size for threads") \ 1566266423Sjfv \ 1567266423Sjfv product(bool, ZeroTLAB, false, \ 1568266423Sjfv "Zero out the newly created TLAB") \ 1569266423Sjfv \ 1570266423Sjfv product(bool, PrintTLAB, false, \ 1571266423Sjfv "Print various TLAB related information") \ 1572266423Sjfv \ 1573266423Sjfv product(bool, TLABStats, true, \ 1574266423Sjfv "Print various TLAB related information") \ 1575266423Sjfv \ 1576266423Sjfv product_pd(bool, NeverActAsServerClassMachine, \ 1577266423Sjfv "Never act like a server-class machine") \ 1578266423Sjfv \ 1579266423Sjfv product(bool, AlwaysActAsServerClassMachine, false, \ 1580266423Sjfv "Always act like a server-class machine") \ 1581266423Sjfv \ 1582266423Sjfv product_pd(uintx, DefaultMaxRAM, \ 1583266423Sjfv "Maximum real memory size for setting server class heap size") \ 1584266423Sjfv \ 1585266423Sjfv product(uintx, DefaultMaxRAMFraction, 4, \ 1586266423Sjfv "Fraction (1/n) of real memory used for server class max heap") \ 1587266423Sjfv \ 1588266423Sjfv product(uintx, DefaultInitialRAMFraction, 64, \ 1589266423Sjfv "Fraction (1/n) of real memory used for server class initial heap") \ 1590266423Sjfv \ 1591266423Sjfv product(bool, UseAutoGCSelectPolicy, false, \ 1592266423Sjfv "Use automatic collection selection policy") \ 1593266423Sjfv \ 1594266423Sjfv product(uintx, AutoGCSelectPauseMillis, 5000, \ 1595266423Sjfv "Automatic GC selection pause threshhold in ms") \ 1596266423Sjfv \ 1597266423Sjfv product(bool, UseAdaptiveSizePolicy, true, \ 1598266423Sjfv "Use adaptive generation sizing policies") \ 1599266423Sjfv \ 1600266423Sjfv product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 1601266423Sjfv "Use adaptive survivor sizing policies") \ 1602266423Sjfv \ 1603266423Sjfv product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 1604266423Sjfv "Use adaptive young-old sizing policies at minor collections") \ 1605266423Sjfv \ 1606266423Sjfv product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 1607266423Sjfv "Use adaptive young-old sizing policies at major collections") \ 1608266423Sjfv \ 1609266423Sjfv product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 1610266423Sjfv "Use statistics from System.GC for adaptive size policy") \ 1611266423Sjfv \ 1612266423Sjfv product(bool, UseAdaptiveGCBoundary, false, \ 1613266423Sjfv "Allow young-old boundary to move") \ 1614266423Sjfv \ 1615266423Sjfv develop(bool, TraceAdaptiveGCBoundary, false, \ 1616266423Sjfv "Trace young-old boundary moves") \ 1617266423Sjfv \ 1618266423Sjfv develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 1619266423Sjfv "Resize the virtual spaces of the young or old generations") \ 1620266423Sjfv \ 1621266423Sjfv product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 1622266423Sjfv "Policy for changeing generation size for throughput goals") \ 1623266423Sjfv \ 1624266423Sjfv product(uintx, AdaptiveSizePausePolicy, 0, \ 1625266423Sjfv "Policy for changing generation size for pause goals") \ 1626266423Sjfv \ 1627266423Sjfv develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 1628266423Sjfv "Adjust tenured generation to achive a minor pause goal") \ 1629266423Sjfv \ 1630266423Sjfv develop(bool, PSAdjustYoungGenForMajorPause, false, \ 1631266423Sjfv "Adjust young generation to achive a major pause goal") \ 1632266423Sjfv \ 1633266423Sjfv product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 1634266423Sjfv "Number of steps where heuristics is used before data is used") \ 1635266423Sjfv \ 1636266423Sjfv develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 1637266423Sjfv "Number of collections before the adaptive sizing is started") \ 1638266423Sjfv \ 1639266423Sjfv product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 1640266423Sjfv "Collecton interval for printing information, zero => never") \ 1641266423Sjfv \ 1642266423Sjfv product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 1643266423Sjfv "Use adaptive minimum footprint as a goal") \ 1644266423Sjfv \ 1645266423Sjfv product(uintx, AdaptiveSizePolicyWeight, 10, \ 1646266423Sjfv "Weight given to exponential resizing, between 0 and 100") \ 1647266423Sjfv \ 1648266423Sjfv product(uintx, AdaptiveTimeWeight, 25, \ 1649266423Sjfv "Weight given to time in adaptive policy, between 0 and 100") \ 1650266423Sjfv \ 1651266423Sjfv product(uintx, PausePadding, 1, \ 1652266423Sjfv "How much buffer to keep for pause time") \ 1653266423Sjfv \ 1654266423Sjfv product(uintx, PromotedPadding, 3, \ 1655266423Sjfv "How much buffer to keep for promotion failure") \ 1656266423Sjfv \ 1657266423Sjfv product(uintx, SurvivorPadding, 3, \ 1658266423Sjfv "How much buffer to keep for survivor overflow") \ 1659266423Sjfv \ 1660266423Sjfv product(uintx, AdaptivePermSizeWeight, 20, \ 1661266423Sjfv "Weight for perm gen exponential resizing, between 0 and 100") \ 1662266423Sjfv \ 1663266423Sjfv product(uintx, PermGenPadding, 3, \ 1664266423Sjfv "How much buffer to keep for perm gen sizing") \ 1665266423Sjfv \ 1666266423Sjfv product(uintx, ThresholdTolerance, 10, \ 1667266423Sjfv "Allowed collection cost difference between generations") \ 1668266423Sjfv \ 1669266423Sjfv product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 1670266423Sjfv "If collection costs are within margin, reduce both by full delta") \ 1671266423Sjfv \ 1672266423Sjfv product(uintx, YoungGenerationSizeIncrement, 20, \ 1673266423Sjfv "Adaptive size percentage change in young generation") \ 1674266423Sjfv \ 1675266423Sjfv product(uintx, YoungGenerationSizeSupplement, 80, \ 1676266423Sjfv "Supplement to YoungedGenerationSizeIncrement used at startup") \ 1677266423Sjfv \ 1678266423Sjfv product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 1679266423Sjfv "Decay factor to YoungedGenerationSizeSupplement") \ 1680266423Sjfv \ 1681266423Sjfv product(uintx, TenuredGenerationSizeIncrement, 20, \ 1682266423Sjfv "Adaptive size percentage change in tenured generation") \ 1683266423Sjfv \ 1684266423Sjfv product(uintx, TenuredGenerationSizeSupplement, 80, \ 1685266423Sjfv "Supplement to TenuredGenerationSizeIncrement used at startup") \ 1686266423Sjfv \ 1687266423Sjfv product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 1688266423Sjfv "Decay factor to TenuredGenerationSizeIncrement") \ 1689266423Sjfv \ 1690266423Sjfv product(uintx, MaxGCPauseMillis, max_uintx, \ 1691266423Sjfv "Adaptive size policy maximum GC pause time goal in msec") \ 1692266423Sjfv \ 1693266423Sjfv product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 1694266423Sjfv "Adaptive size policy maximum GC minor pause time goal in msec") \ 1695266423Sjfv \ 1696266423Sjfv product(uintx, GCTimeRatio, 99, \ 1697266423Sjfv "Adaptive size policy application time to GC time ratio") \ 1698266423Sjfv \ 1699266423Sjfv product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 1700266423Sjfv "Adaptive size scale down factor for shrinking") \ 1701266423Sjfv \ 1702266423Sjfv product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 1703266423Sjfv "Adaptive size decays the major cost for long major intervals") \ 1704266423Sjfv \ 1705266423Sjfv product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 1706266423Sjfv "Time scale over which major costs decay") \ 1707266423Sjfv \ 1708266423Sjfv product(uintx, MinSurvivorRatio, 3, \ 1709266423Sjfv "Minimum ratio of young generation/survivor space size") \ 1710266423Sjfv \ 1711266423Sjfv product(uintx, InitialSurvivorRatio, 8, \ 1712266423Sjfv "Initial ratio of eden/survivor space size") \ 1713266423Sjfv \ 1714266423Sjfv product(uintx, BaseFootPrintEstimate, 256*M, \ 1715266423Sjfv "Estimate of footprint other than Java Heap") \ 1716266423Sjfv \ 1717266423Sjfv product(bool, UseGCOverheadLimit, true, \ 1718266423Sjfv "Use policy to limit of proportion of time spent in GC " \ 1719266423Sjfv "before an OutOfMemory error is thrown") \ 1720266423Sjfv \ 1721266423Sjfv product(uintx, GCTimeLimit, 98, \ 1722266423Sjfv "Limit of proportion of time spent in GC before an OutOfMemory" \ 1723266423Sjfv "error is thrown (used with GCHeapFreeLimit)") \ 1724266423Sjfv \ 1725266423Sjfv product(uintx, GCHeapFreeLimit, 2, \ 1726266423Sjfv "Minimum percentage of free space after a full GC before an " \ 1727266423Sjfv "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 1728266423Sjfv \ 1729266423Sjfv develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 1730266423Sjfv "Number of consecutive collections before gc time limit fires") \ 1731266423Sjfv \ 1732266423Sjfv product(bool, PrintAdaptiveSizePolicy, false, \ 1733266423Sjfv "Print information about AdaptiveSizePolicy") \ 1734266423Sjfv \ 1735266423Sjfv product(intx, PrefetchCopyIntervalInBytes, -1, \ 1736266423Sjfv "How far ahead to prefetch destination area (<= 0 means off)") \ 1737266423Sjfv \ 1738266423Sjfv product(intx, PrefetchScanIntervalInBytes, -1, \ 1739266423Sjfv "How far ahead to prefetch scan area (<= 0 means off)") \ 1740266423Sjfv \ 1741266423Sjfv product(intx, PrefetchFieldsAhead, -1, \ 1742266423Sjfv "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 1743266423Sjfv \ 1744266423Sjfv develop(bool, UsePrefetchQueue, true, \ 1745266423Sjfv "Use the prefetch queue during PS promotion") \ 1746266423Sjfv \ 1747266423Sjfv diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 1748266423Sjfv "Verify system before exiting") \ 1749266423Sjfv \ 1750266423Sjfv diagnostic(bool, VerifyBeforeGC, false, \ 1751266423Sjfv "Verify memory system before GC") \ 1752266423Sjfv \ 1753266423Sjfv diagnostic(bool, VerifyAfterGC, false, \ 1754266423Sjfv "Verify memory system after GC") \ 1755266423Sjfv \ 1756266423Sjfv diagnostic(bool, VerifyDuringGC, false, \ 1757266423Sjfv "Verify memory system during GC (between phases)") \ 1758266423Sjfv \ 1759266423Sjfv diagnostic(bool, VerifyRememberedSets, false, \ 1760266423Sjfv "Verify GC remembered sets") \ 1761266423Sjfv \ 1762266423Sjfv diagnostic(bool, VerifyObjectStartArray, true, \ 1763266423Sjfv "Verify GC object start array if verify before/after") \ 1764266423Sjfv \ 1765266423Sjfv product(bool, DisableExplicitGC, false, \ 1766266423Sjfv "Tells whether calling System.gc() does a full GC") \ 1767266423Sjfv \ 1768266423Sjfv notproduct(bool, CheckMemoryInitialization, false, \ 1769266423Sjfv "Checks memory initialization") \ 1770266423Sjfv \ 1771266423Sjfv product(bool, CollectGen0First, false, \ 1772266423Sjfv "Collect youngest generation before each full GC") \ 1773266423Sjfv \ 1774266423Sjfv diagnostic(bool, BindCMSThreadToCPU, false, \ 1775266423Sjfv "Bind CMS Thread to CPU if possible") \ 1776266423Sjfv \ 1777266423Sjfv diagnostic(uintx, CPUForCMSThread, 0, \ 1778266423Sjfv "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 1779266423Sjfv \ 1780266423Sjfv product(bool, BindGCTaskThreadsToCPUs, false, \ 1781266423Sjfv "Bind GCTaskThreads to CPUs if possible") \ 1782266423Sjfv \ 1783266423Sjfv product(bool, UseGCTaskAffinity, false, \ 1784266423Sjfv "Use worker affinity when asking for GCTasks") \ 1785266423Sjfv \ 1786266423Sjfv product(uintx, ProcessDistributionStride, 4, \ 1787266423Sjfv "Stride through processors when distributing processes") \ 1788266423Sjfv \ 1789266423Sjfv product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 1790266423Sjfv "number of times the coordinator GC thread will sleep while " \ 1791266423Sjfv "yielding before giving up and resuming GC") \ 1792266423Sjfv \ 1793266423Sjfv product(uintx, CMSYieldSleepCount, 0, \ 1794266423Sjfv "number of times a GC thread (minus the coordinator) " \ 1795266423Sjfv "will sleep while yielding before giving up and resuming GC") \ 1796266423Sjfv \ 1797266423Sjfv notproduct(bool, PrintFlagsFinal, false, \ 1798266423Sjfv "Print all command line flags after argument processing") \ 1799266423Sjfv \ 1800266423Sjfv /* gc tracing */ \ 1801266423Sjfv manageable(bool, PrintGC, false, \ 1802266423Sjfv "Print message at garbage collect") \ 1803266423Sjfv \ 1804266423Sjfv manageable(bool, PrintGCDetails, false, \ 1805266423Sjfv "Print more details at garbage collect") \ 1806266423Sjfv \ 1807266423Sjfv manageable(bool, PrintGCDateStamps, false, \ 1808266423Sjfv "Print date stamps at garbage collect") \ 1809266423Sjfv \ 1810266423Sjfv manageable(bool, PrintGCTimeStamps, false, \ 1811266423Sjfv "Print timestamps at garbage collect") \ 1812266423Sjfv \ 1813266423Sjfv product(bool, PrintGCTaskTimeStamps, false, \ 1814266423Sjfv "Print timestamps for individual gc worker thread tasks") \ 1815266423Sjfv \ 1816266423Sjfv develop(intx, ConcGCYieldTimeout, 0, \ 1817266423Sjfv "If non-zero, assert that GC threads yield within this # of ms.") \ 1818266423Sjfv \ 1819266423Sjfv notproduct(bool, TraceMarkSweep, false, \ 1820266423Sjfv "Trace mark sweep") \ 1821266423Sjfv \ 1822266423Sjfv product(bool, PrintReferenceGC, false, \ 1823266423Sjfv "Print times spent handling reference objects during GC " \ 1824266423Sjfv " (enabled only when PrintGCDetails)") \ 1825266423Sjfv \ 1826266423Sjfv develop(bool, TraceReferenceGC, false, \ 1827266423Sjfv "Trace handling of soft/weak/final/phantom references") \ 1828266423Sjfv \ 1829266423Sjfv develop(bool, TraceFinalizerRegistration, false, \ 1830266423Sjfv "Trace registration of final references") \ 1831266423Sjfv \ 1832266423Sjfv notproduct(bool, TraceScavenge, false, \ 1833266423Sjfv "Trace scavenge") \ 1834266423Sjfv \ 1835266423Sjfv product_rw(bool, TraceClassLoading, false, \ 1836266423Sjfv "Trace all classes loaded") \ 1837266423Sjfv \ 1838266423Sjfv product(bool, TraceClassLoadingPreorder, false, \ 1839266423Sjfv "Trace all classes loaded in order referenced (not loaded)") \ 1840266423Sjfv \ 1841266423Sjfv product_rw(bool, TraceClassUnloading, false, \ 1842266423Sjfv "Trace unloading of classes") \ 1843266423Sjfv \ 1844266423Sjfv product_rw(bool, TraceLoaderConstraints, false, \ 1845266423Sjfv "Trace loader constraints") \ 1846266423Sjfv \ 1847266423Sjfv product(bool, TraceGen0Time, false, \ 1848266423Sjfv "Trace accumulated time for Gen 0 collection") \ 1849266423Sjfv \ 1850266423Sjfv product(bool, TraceGen1Time, false, \ 1851266423Sjfv "Trace accumulated time for Gen 1 collection") \ 1852266423Sjfv \ 1853266423Sjfv product(bool, PrintTenuringDistribution, false, \ 1854266423Sjfv "Print tenuring age information") \ 1855266423Sjfv \ 1856266423Sjfv product_rw(bool, PrintHeapAtGC, false, \ 1857266423Sjfv "Print heap layout before and after each GC") \ 1858266423Sjfv \ 1859266423Sjfv product(bool, PrintHeapAtSIGBREAK, true, \ 1860266423Sjfv "Print heap layout in response to SIGBREAK") \ 1861266423Sjfv \ 1862266423Sjfv manageable(bool, PrintClassHistogram, false, \ 1863266423Sjfv "Print a histogram of class instances") \ 1864266423Sjfv \ 1865266423Sjfv develop(bool, TraceWorkGang, false, \ 1866266423Sjfv "Trace activities of work gangs") \ 1867266423Sjfv \ 1868266423Sjfv product(bool, TraceParallelOldGCTasks, false, \ 1869266423Sjfv "Trace multithreaded GC activity") \ 1870266423Sjfv \ 1871266423Sjfv develop(bool, TraceBlockOffsetTable, false, \ 1872266423Sjfv "Print BlockOffsetTable maps") \ 1873266423Sjfv \ 1874266423Sjfv develop(bool, TraceCardTableModRefBS, false, \ 1875266423Sjfv "Print CardTableModRefBS maps") \ 1876266423Sjfv \ 1877266423Sjfv develop(bool, TraceGCTaskManager, false, \ 1878266423Sjfv "Trace actions of the GC task manager") \ 1879266423Sjfv \ 1880266423Sjfv develop(bool, TraceGCTaskQueue, false, \ 1881266423Sjfv "Trace actions of the GC task queues") \ 1882266423Sjfv \ 1883266423Sjfv develop(bool, TraceGCTaskThread, false, \ 1884266423Sjfv "Trace actions of the GC task threads") \ 1885266423Sjfv \ 1886266423Sjfv product(bool, PrintParallelOldGCPhaseTimes, false, \ 1887266423Sjfv "Print the time taken by each parallel old gc phase." \ 1888266423Sjfv "PrintGCDetails must also be enabled.") \ 1889266423Sjfv \ 1890266423Sjfv develop(bool, TraceParallelOldGCMarkingPhase, false, \ 1891266423Sjfv "Trace parallel old gc marking phase") \ 1892266423Sjfv \ 1893266423Sjfv develop(bool, TraceParallelOldGCSummaryPhase, false, \ 1894266423Sjfv "Trace parallel old gc summary phase") \ 1895266423Sjfv \ 1896266423Sjfv develop(bool, TraceParallelOldGCCompactionPhase, false, \ 1897266423Sjfv "Trace parallel old gc compaction phase") \ 1898266423Sjfv \ 1899266423Sjfv develop(bool, TraceParallelOldGCDensePrefix, false, \ 1900266423Sjfv "Trace parallel old gc dense prefix computation") \ 1901266423Sjfv \ 1902266423Sjfv develop(bool, IgnoreLibthreadGPFault, false, \ 1903266423Sjfv "Suppress workaround for libthread GP fault") \ 1904266423Sjfv \ 1905266423Sjfv /* JVMTI heap profiling */ \ 1906266423Sjfv \ 1907266423Sjfv diagnostic(bool, TraceJVMTIObjectTagging, false, \ 1908266423Sjfv "Trace JVMTI object tagging calls") \ 1909266423Sjfv \ 1910266423Sjfv diagnostic(bool, VerifyBeforeIteration, false, \ 1911266423Sjfv "Verify memory system before JVMTI iteration") \ 1912266423Sjfv \ 1913266423Sjfv /* compiler interface */ \ 1914266423Sjfv \ 1915266423Sjfv develop(bool, CIPrintCompilerName, false, \ 1916266423Sjfv "when CIPrint is active, print the name of the active compiler") \ 1917266423Sjfv \ 1918266423Sjfv develop(bool, CIPrintCompileQueue, false, \ 1919266423Sjfv "display the contents of the compile queue whenever a " \ 1920266423Sjfv "compilation is enqueued") \ 1921266423Sjfv \ 1922266423Sjfv develop(bool, CIPrintRequests, false, \ 1923266423Sjfv "display every request for compilation") \ 1924266423Sjfv \ 1925266423Sjfv product(bool, CITime, false, \ 1926266423Sjfv "collect timing information for compilation") \ 1927266423Sjfv \ 1928266423Sjfv develop(bool, CITimeEach, false, \ 1929266423Sjfv "display timing information after each successful compilation") \ 1930266423Sjfv \ 1931266423Sjfv develop(bool, CICountOSR, true, \ 1932266423Sjfv "use a separate counter when assigning ids to osr compilations") \ 1933266423Sjfv \ 1934266423Sjfv develop(bool, CICompileNatives, true, \ 1935266423Sjfv "compile native methods if supported by the compiler") \ 1936266423Sjfv \ 1937266423Sjfv develop_pd(bool, CICompileOSR, \ 1938266423Sjfv "compile on stack replacement methods if supported by the " \ 1939266423Sjfv "compiler") \ 1940266423Sjfv \ 1941266423Sjfv develop(bool, CIPrintMethodCodes, false, \ 1942266423Sjfv "print method bytecodes of the compiled code") \ 1943266423Sjfv \ 1944266423Sjfv develop(bool, CIPrintTypeFlow, false, \ 1945266423Sjfv "print the results of ciTypeFlow analysis") \ 1946266423Sjfv \ 1947266423Sjfv develop(bool, CITraceTypeFlow, false, \ 1948266423Sjfv "detailed per-bytecode tracing of ciTypeFlow analysis") \ 1949266423Sjfv \ 1950266423Sjfv develop(intx, CICloneLoopTestLimit, 100, \ 1951266423Sjfv "size limit for blocks heuristically cloned in ciTypeFlow") \ 1952266423Sjfv \ 1953266423Sjfv /* temp diagnostics */ \ 1954266423Sjfv \ 1955266423Sjfv diagnostic(bool, TraceRedundantCompiles, false, \ 1956266423Sjfv "Have compile broker print when a request already in the queue is"\ 1957266423Sjfv " requested again") \ 1958266423Sjfv \ 1959266423Sjfv diagnostic(bool, InitialCompileFast, false, \ 1960266423Sjfv "Initial compile at CompLevel_fast_compile") \ 1961266423Sjfv \ 1962266423Sjfv diagnostic(bool, InitialCompileReallyFast, false, \ 1963266423Sjfv "Initial compile at CompLevel_really_fast_compile (no profile)") \ 1964266423Sjfv \ 1965266423Sjfv diagnostic(bool, FullProfileOnReInterpret, true, \ 1966266423Sjfv "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ 1967266423Sjfv \ 1968266423Sjfv /* compiler */ \ 1969266423Sjfv \ 1970266423Sjfv product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 1971266423Sjfv "Number of compiler threads to run") \ 1972266423Sjfv \ 1973266423Sjfv product(intx, CompilationPolicyChoice, 0, \ 1974266423Sjfv "which compilation policy (0/1)") \ 1975266423Sjfv \ 1976266423Sjfv develop(bool, UseStackBanging, true, \ 1977266423Sjfv "use stack banging for stack overflow checks (required for " \ 1978266423Sjfv "proper StackOverflow handling; disable only to measure cost " \ 1979266423Sjfv "of stackbanging)") \ 1980266423Sjfv \ 1981266423Sjfv develop(bool, Use24BitFPMode, true, \ 1982266423Sjfv "Set 24-bit FPU mode on a per-compile basis ") \ 1983266423Sjfv \ 1984266423Sjfv develop(bool, Use24BitFP, true, \ 1985266423Sjfv "use FP instructions that produce 24-bit precise results") \ 1986266423Sjfv \ 1987266423Sjfv develop(bool, UseStrictFP, true, \ 1988266423Sjfv "use strict fp if modifier strictfp is set") \ 1989266423Sjfv \ 1990266423Sjfv develop(bool, GenerateSynchronizationCode, true, \ 1991266423Sjfv "generate locking/unlocking code for synchronized methods and " \ 1992266423Sjfv "monitors") \ 1993266423Sjfv \ 1994266423Sjfv develop(bool, GenerateCompilerNullChecks, true, \ 1995266423Sjfv "Generate explicit null checks for loads/stores/calls") \ 1996266423Sjfv \ 1997266423Sjfv develop(bool, GenerateRangeChecks, true, \ 1998266423Sjfv "Generate range checks for array accesses") \ 1999266423Sjfv \ 2000266423Sjfv develop_pd(bool, ImplicitNullChecks, \ 2001266423Sjfv "generate code for implicit null checks") \ 2002266423Sjfv \ 2003266423Sjfv product(bool, PrintSafepointStatistics, false, \ 2004266423Sjfv "print statistics about safepoint synchronization") \ 2005266423Sjfv \ 2006266423Sjfv product(intx, PrintSafepointStatisticsCount, 300, \ 2007266423Sjfv "total number of safepoint statistics collected " \ 2008266423Sjfv "before printing them out") \ 2009266423Sjfv \ 2010266423Sjfv product(intx, PrintSafepointStatisticsTimeout, -1, \ 2011266423Sjfv "print safepoint statistics only when safepoint takes" \ 2012266423Sjfv " more than PrintSafepointSatisticsTimeout in millis") \ 2013266423Sjfv \ 2014266423Sjfv develop(bool, InlineAccessors, true, \ 2015266423Sjfv "inline accessor methods (get/set)") \ 2016266423Sjfv \ 2017266423Sjfv product(bool, Inline, true, \ 2018266423Sjfv "enable inlining") \ 2019266423Sjfv \ 2020266423Sjfv product(bool, ClipInlining, true, \ 2021266423Sjfv "clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2022266423Sjfv \ 2023266423Sjfv develop(bool, UseCHA, true, \ 2024266423Sjfv "enable CHA") \ 2025266423Sjfv \ 2026266423Sjfv product(bool, UseTypeProfile, true, \ 2027266423Sjfv "Check interpreter profile for historically monomorphic calls") \ 2028266423Sjfv \ 2029266423Sjfv product(intx, TypeProfileMajorReceiverPercent, 90, \ 2030266423Sjfv "% of major receiver type to all profiled receivers") \ 2031266423Sjfv \ 2032266423Sjfv notproduct(bool, TimeCompiler, false, \ 2033266423Sjfv "time the compiler") \ 2034266423Sjfv \ 2035266423Sjfv notproduct(bool, TimeCompiler2, false, \ 2036266423Sjfv "detailed time the compiler (requires +TimeCompiler)") \ 2037266423Sjfv \ 2038266423Sjfv diagnostic(bool, PrintInlining, false, \ 2039266423Sjfv "prints inlining optimizations") \ 2040266423Sjfv \ 2041266423Sjfv diagnostic(bool, PrintIntrinsics, false, \ 2042266423Sjfv "prints attempted and successful inlining of intrinsics") \ 2043266423Sjfv \ 2044266423Sjfv diagnostic(ccstrlist, DisableIntrinsic, "", \ 2045266423Sjfv "do not expand intrinsics whose (internal) names appear here") \ 2046266423Sjfv \ 2047266423Sjfv develop(bool, StressReflectiveCode, false, \ 2048266423Sjfv "Use inexact types at allocations, etc., to test reflection") \ 2049266423Sjfv \ 2050266423Sjfv develop(bool, EagerInitialization, false, \ 2051266423Sjfv "Eagerly initialize classes if possible") \ 2052266423Sjfv \ 2053266423Sjfv product(bool, Tier1UpdateMethodData, trueInTiered, \ 2054266423Sjfv "Update methodDataOops in Tier1-generated code") \ 2055266423Sjfv \ 2056266423Sjfv develop(bool, TraceMethodReplacement, false, \ 2057266423Sjfv "Print when methods are replaced do to recompilation") \ 2058266423Sjfv \ 2059266423Sjfv develop(bool, PrintMethodFlushing, false, \ 2060266423Sjfv "print the nmethods being flushed") \ 2061266423Sjfv \ 2062266423Sjfv notproduct(bool, LogMultipleMutexLocking, false, \ 2063266423Sjfv "log locking and unlocking of mutexes (only if multiple locks " \ 2064266423Sjfv "are held)") \ 2065266423Sjfv \ 2066266423Sjfv develop(bool, UseRelocIndex, false, \ 2067266423Sjfv "use an index to speed random access to relocations") \ 2068266423Sjfv \ 2069266423Sjfv develop(bool, StressCodeBuffers, false, \ 2070266423Sjfv "Exercise code buffer expansion and other rare state changes") \ 2071266423Sjfv \ 2072266423Sjfv diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2073266423Sjfv "Generate extra debugging info for non-safepoints in nmethods") \ 2074266423Sjfv \ 2075266423Sjfv diagnostic(bool, DebugInlinedCalls, true, \ 2076266423Sjfv "If false, restricts profiled locations to the root method only") \ 2077266423Sjfv \ 2078266423Sjfv product(bool, PrintVMOptions, trueInDebug, \ 2079266423Sjfv "print VM flag settings") \ 2080266423Sjfv \ 2081266423Sjfv diagnostic(bool, SerializeVMOutput, true, \ 2082266423Sjfv "Use a mutex to serialize output to tty and hotspot.log") \ 2083266423Sjfv \ 2084266423Sjfv diagnostic(bool, DisplayVMOutput, true, \ 2085266423Sjfv "Display all VM output on the tty, independently of LogVMOutput") \ 2086266423Sjfv \ 2087266423Sjfv diagnostic(bool, LogVMOutput, trueInDebug, \ 2088266423Sjfv "Save VM output to hotspot.log, or to LogFile") \ 2089266423Sjfv \ 2090266423Sjfv diagnostic(ccstr, LogFile, NULL, \ 2091266423Sjfv "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ 2092266423Sjfv \ 2093266423Sjfv product(ccstr, ErrorFile, NULL, \ 2094266423Sjfv "If an error occurs, save the error data to this file " \ 2095266423Sjfv "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2096266423Sjfv \ 2097266423Sjfv product(bool, DisplayVMOutputToStderr, false, \ 2098266423Sjfv "If DisplayVMOutput is true, display all VM output to stderr") \ 2099266423Sjfv \ 2100266423Sjfv product(bool, DisplayVMOutputToStdout, false, \ 2101266423Sjfv "If DisplayVMOutput is true, display all VM output to stdout") \ 2102266423Sjfv \ 2103266423Sjfv product(bool, UseHeavyMonitors, false, \ 2104266423Sjfv "use heavyweight instead of lightweight Java monitors") \ 2105266423Sjfv \ 2106266423Sjfv notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2107266423Sjfv "print histogram of the symbol table") \ 2108266423Sjfv \ 2109266423Sjfv notproduct(bool, ExitVMOnVerifyError, false, \ 2110266423Sjfv "standard exit from VM if bytecode verify error " \ 2111266423Sjfv "(only in debug mode)") \ 2112266423Sjfv \ 2113266423Sjfv notproduct(ccstr, AbortVMOnException, NULL, \ 2114266423Sjfv "Call fatal if this exception is thrown. Example: " \ 2115266423Sjfv "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2116266423Sjfv \ 2117266423Sjfv develop(bool, DebugVtables, false, \ 2118266423Sjfv "add debugging code to vtable dispatch") \ 2119266423Sjfv \ 2120266423Sjfv develop(bool, PrintVtables, false, \ 2121266423Sjfv "print vtables when printing klass") \ 2122266423Sjfv \ 2123266423Sjfv notproduct(bool, PrintVtableStats, false, \ 2124266423Sjfv "print vtables stats at end of run") \ 2125266423Sjfv \ 2126266423Sjfv develop(bool, TraceCreateZombies, false, \ 2127266423Sjfv "trace creation of zombie nmethods") \ 2128266423Sjfv \ 2129266423Sjfv notproduct(bool, IgnoreLockingAssertions, false, \ 2130266423Sjfv "disable locking assertions (for speed)") \ 2131266423Sjfv \ 2132266423Sjfv notproduct(bool, VerifyLoopOptimizations, false, \ 2133266423Sjfv "verify major loop optimizations") \ 2134266423Sjfv \ 2135266423Sjfv product(bool, RangeCheckElimination, true, \ 2136266423Sjfv "Split loop iterations to eliminate range checks") \ 2137266423Sjfv \ 2138266423Sjfv develop_pd(bool, UncommonNullCast, \ 2139266423Sjfv "track occurrences of null in casts; adjust compiler tactics") \ 2140266423Sjfv \ 2141266423Sjfv develop(bool, TypeProfileCasts, true, \ 2142266423Sjfv "treat casts like calls for purposes of type profiling") \ 2143266423Sjfv \ 2144266423Sjfv develop(bool, MonomorphicArrayCheck, true, \ 2145266423Sjfv "Uncommon-trap array store checks that require full type check") \ 2146266423Sjfv \ 2147266423Sjfv develop(bool, DelayCompilationDuringStartup, true, \ 2148266423Sjfv "Delay invoking the compiler until main application class is " \ 2149266423Sjfv "loaded") \ 2150266423Sjfv \ 2151266423Sjfv develop(bool, CompileTheWorld, false, \ 2152266423Sjfv "Compile all methods in all classes in bootstrap class path " \ 2153266423Sjfv "(stress test)") \ 2154266423Sjfv \ 2155266423Sjfv develop(bool, CompileTheWorldPreloadClasses, true, \ 2156266423Sjfv "Preload all classes used by a class before start loading") \ 2157266423Sjfv \ 2158266423Sjfv notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \ 2159266423Sjfv "Compile all methods although class initializer failed") \ 2160266423Sjfv \ 2161266423Sjfv develop(bool, TraceIterativeGVN, false, \ 2162266423Sjfv "Print progress during Iterative Global Value Numbering") \ 2163266423Sjfv \ 2164266423Sjfv develop(bool, FillDelaySlots, true, \ 2165266423Sjfv "Fill delay slots (on SPARC only)") \ 2166266423Sjfv \ 2167266423Sjfv develop(bool, VerifyIterativeGVN, false, \ 2168266423Sjfv "Verify Def-Use modifications during sparse Iterative Global " \ 2169266423Sjfv "Value Numbering") \ 2170266423Sjfv \ 2171266423Sjfv notproduct(bool, TracePhaseCCP, false, \ 2172266423Sjfv "Print progress during Conditional Constant Propagation") \ 2173266423Sjfv \ 2174266423Sjfv develop(bool, TimeLivenessAnalysis, false, \ 2175266423Sjfv "Time computation of bytecode liveness analysis") \ 2176266423Sjfv \ 2177266423Sjfv develop(bool, TraceLivenessGen, false, \ 2178266423Sjfv "Trace the generation of liveness analysis information") \ 2179266423Sjfv \ 2180266423Sjfv notproduct(bool, TraceLivenessQuery, false, \ 2181266423Sjfv "Trace queries of liveness analysis information") \ 2182266423Sjfv \ 2183266423Sjfv notproduct(bool, CollectIndexSetStatistics, false, \ 2184266423Sjfv "Collect information about IndexSets") \ 2185266423Sjfv \ 2186266423Sjfv develop(bool, PrintDominators, false, \ 2187266423Sjfv "Print out dominator trees for GVN") \ 2188266423Sjfv \ 2189266423Sjfv develop(bool, UseLoopSafepoints, true, \ 2190266423Sjfv "Generate Safepoint nodes in every loop") \ 2191266423Sjfv \ 2192266423Sjfv notproduct(bool, TraceCISCSpill, false, \ 2193266423Sjfv "Trace allocators use of cisc spillable instructions") \ 2194266423Sjfv \ 2195266423Sjfv notproduct(bool, TraceSpilling, false, \ 2196266423Sjfv "Trace spilling") \ 2197266423Sjfv \ 2198266423Sjfv develop(bool, DeutschShiffmanExceptions, true, \ 2199266423Sjfv "Fast check to find exception handler for precisely typed " \ 2200266423Sjfv "exceptions") \ 2201266423Sjfv \ 2202266423Sjfv product(bool, SplitIfBlocks, true, \ 2203266423Sjfv "Clone compares and control flow through merge points to fold " \ 2204266423Sjfv "some branches") \ 2205266423Sjfv \ 2206266423Sjfv develop(intx, FastAllocateSizeLimit, 128*K, \ 2207266423Sjfv /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2208266423Sjfv "Inline allocations larger than this in doublewords must go slow")\ 2209266423Sjfv \ 2210266423Sjfv product(bool, AggressiveOpts, false, \ 2211266423Sjfv "Enable aggressive optimizations - see arguments.cpp") \ 2212266423Sjfv \ 2213266423Sjfv /* statistics */ \ 2214266423Sjfv develop(bool, UseVTune, false, \ 2215266423Sjfv "enable support for Intel's VTune profiler") \ 2216266423Sjfv \ 2217266423Sjfv develop(bool, CountCompiledCalls, false, \ 2218266423Sjfv "counts method invocations") \ 2219266423Sjfv \ 2220266423Sjfv notproduct(bool, CountRuntimeCalls, false, \ 2221266423Sjfv "counts VM runtime calls") \ 2222266423Sjfv \ 2223266423Sjfv develop(bool, CountJNICalls, false, \ 2224266423Sjfv "counts jni method invocations") \ 2225266423Sjfv \ 2226266423Sjfv notproduct(bool, CountJVMCalls, false, \ 2227266423Sjfv "counts jvm method invocations") \ 2228266423Sjfv \ 2229266423Sjfv notproduct(bool, CountRemovableExceptions, false, \ 2230266423Sjfv "count exceptions that could be replaced by branches due to " \ 2231266423Sjfv "inlining") \ 2232266423Sjfv \ 2233266423Sjfv notproduct(bool, ICMissHistogram, false, \ 2234266423Sjfv "produce histogram of IC misses") \ 2235266423Sjfv \ 2236266423Sjfv notproduct(bool, PrintClassStatistics, false, \ 2237266423Sjfv "prints class statistics at end of run") \ 2238266423Sjfv \ 2239266423Sjfv notproduct(bool, PrintMethodStatistics, false, \ 2240266423Sjfv "prints method statistics at end of run") \ 2241266423Sjfv \ 2242266423Sjfv /* interpreter */ \ 2243266423Sjfv develop(bool, ClearInterpreterLocals, false, \ 2244266423Sjfv "Always clear local variables of interpreter activations upon " \ 2245266423Sjfv "entry") \ 2246266423Sjfv \ 2247266423Sjfv product_pd(bool, RewriteBytecodes, \ 2248266423Sjfv "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2249266423Sjfv \ 2250266423Sjfv product_pd(bool, RewriteFrequentPairs, \ 2251266423Sjfv "Rewrite frequently used bytecode pairs into a single bytecode") \ 2252266423Sjfv \ 2253266423Sjfv product(bool, PrintInterpreter, false, \ 2254266423Sjfv "Prints the generated interpreter code") \ 2255266423Sjfv \ 2256266423Sjfv product(bool, UseInterpreter, true, \ 2257266423Sjfv "Use interpreter for non-compiled methods") \ 2258266423Sjfv \ 2259266423Sjfv develop(bool, UseFastSignatureHandlers, true, \ 2260266423Sjfv "Use fast signature handlers for native calls") \ 2261266423Sjfv \ 2262266423Sjfv develop(bool, UseV8InstrsOnly, false, \ 2263266423Sjfv "Use SPARC-V8 Compliant instruction subset") \ 2264266423Sjfv \ 2265266423Sjfv product(bool, UseNiagaraInstrs, false, \ 2266266423Sjfv "Use Niagara-efficient instruction subset") \ 2267266423Sjfv \ 2268266423Sjfv develop(bool, UseCASForSwap, false, \ 2269266423Sjfv "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ 2270266423Sjfv \ 2271266423Sjfv product(bool, UseLoopCounter, true, \ 2272266423Sjfv "Increment invocation counter on backward branch") \ 2273266423Sjfv \ 2274266423Sjfv product(bool, UseFastEmptyMethods, true, \ 2275266423Sjfv "Use fast method entry code for empty methods") \ 2276266423Sjfv \ 2277266423Sjfv product(bool, UseFastAccessorMethods, true, \ 2278266423Sjfv "Use fast method entry code for accessor methods") \ 2279266423Sjfv \ 2280266423Sjfv product_pd(bool, UseOnStackReplacement, \ 2281266423Sjfv "Use on stack replacement, calls runtime if invoc. counter " \ 2282266423Sjfv "overflows in loop") \ 2283266423Sjfv \ 2284266423Sjfv notproduct(bool, TraceOnStackReplacement, false, \ 2285266423Sjfv "Trace on stack replacement") \ 2286266423Sjfv \ 2287266423Sjfv develop(bool, PoisonOSREntry, true, \ 2288266423Sjfv "Detect abnormal calls to OSR code") \ 2289266423Sjfv \ 2290266423Sjfv product_pd(bool, PreferInterpreterNativeStubs, \ 2291266423Sjfv "Use always interpreter stubs for native methods invoked via " \ 2292266423Sjfv "interpreter") \ 2293266423Sjfv \ 2294266423Sjfv develop(bool, CountBytecodes, false, \ 2295266423Sjfv "Count number of bytecodes executed") \ 2296266423Sjfv \ 2297266423Sjfv develop(bool, PrintBytecodeHistogram, false, \ 2298266423Sjfv "Print histogram of the executed bytecodes") \ 2299266423Sjfv \ 2300266423Sjfv develop(bool, PrintBytecodePairHistogram, false, \ 2301266423Sjfv "Print histogram of the executed bytecode pairs") \ 2302266423Sjfv \ 2303266423Sjfv develop(bool, PrintSignatureHandlers, false, \ 2304266423Sjfv "Print code generated for native method signature handlers") \ 2305266423Sjfv \ 2306266423Sjfv develop(bool, VerifyOops, false, \ 2307266423Sjfv "Do plausibility checks for oops") \ 2308266423Sjfv \ 2309266423Sjfv develop(bool, CheckUnhandledOops, false, \ 2310266423Sjfv "Check for unhandled oops in VM code") \ 2311266423Sjfv \ 2312266423Sjfv develop(bool, VerifyJNIFields, trueInDebug, \ 2313266423Sjfv "Verify jfieldIDs for instance fields") \ 2314266423Sjfv \ 2315266423Sjfv notproduct(bool, VerifyJNIEnvThread, false, \ 2316266423Sjfv "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2317266423Sjfv "from JNI") \ 2318266423Sjfv \ 2319266423Sjfv develop(bool, VerifyFPU, false, \ 2320266423Sjfv "Verify FPU state (check for NaN's, etc.)") \ 2321266423Sjfv \ 2322266423Sjfv develop(bool, VerifyThread, false, \ 2323266423Sjfv "Watch the thread register for corruption (SPARC only)") \ 2324266423Sjfv \ 2325266423Sjfv develop(bool, VerifyActivationFrameSize, false, \ 2326266423Sjfv "Verify that activation frame didn't become smaller than its " \ 2327266423Sjfv "minimal size") \ 2328266423Sjfv \ 2329266423Sjfv develop(bool, TraceFrequencyInlining, false, \ 2330266423Sjfv "Trace frequency based inlining") \ 2331266423Sjfv \ 2332266423Sjfv notproduct(bool, TraceTypeProfile, false, \ 2333266423Sjfv "Trace type profile") \ 2334266423Sjfv \ 2335266423Sjfv develop_pd(bool, InlineIntrinsics, \ 2336266423Sjfv "Inline intrinsics that can be statically resolved") \ 2337266423Sjfv \ 2338266423Sjfv product_pd(bool, ProfileInterpreter, \ 2339266423Sjfv "Profile at the bytecode level during interpretation") \ 2340266423Sjfv \ 2341266423Sjfv develop_pd(bool, ProfileTraps, \ 2342266423Sjfv "Profile deoptimization traps at the bytecode level") \ 2343266423Sjfv \ 2344266423Sjfv product(intx, ProfileMaturityPercentage, 20, \ 2345266423Sjfv "number of method invocations/branches (expressed as % of " \ 2346266423Sjfv "CompileThreshold) before using the method's profile") \ 2347266423Sjfv \ 2348266423Sjfv develop(bool, PrintMethodData, false, \ 2349266423Sjfv "Print the results of +ProfileInterpreter at end of run") \ 2350266423Sjfv \ 2351266423Sjfv develop(bool, VerifyDataPointer, trueInDebug, \ 2352266423Sjfv "Verify the method data pointer during interpreter profiling") \ 2353266423Sjfv \ 2354266423Sjfv develop(bool, VerifyCompiledCode, false, \ 2355266423Sjfv "Include miscellaneous runtime verifications in nmethod code; " \ 2356266423Sjfv "off by default because it disturbs nmethod size heuristics.") \ 2357266423Sjfv \ 2358266423Sjfv \ 2359266423Sjfv /* compilation */ \ 2360266423Sjfv product(bool, UseCompiler, true, \ 2361266423Sjfv "use compilation") \ 2362266423Sjfv \ 2363266423Sjfv develop(bool, TraceCompilationPolicy, false, \ 2364266423Sjfv "Trace compilation policy") \ 2365266423Sjfv \ 2366266423Sjfv develop(bool, TimeCompilationPolicy, false, \ 2367266423Sjfv "Time the compilation policy") \ 2368266423Sjfv \ 2369266423Sjfv product(bool, UseCounterDecay, true, \ 2370266423Sjfv "adjust recompilation counters") \ 2371266423Sjfv \ 2372266423Sjfv develop(intx, CounterHalfLifeTime, 30, \ 2373266423Sjfv "half-life time of invocation counters (in secs)") \ 2374266423Sjfv \ 2375266423Sjfv develop(intx, CounterDecayMinIntervalLength, 500, \ 2376266423Sjfv "Min. ms. between invocation of CounterDecay") \ 2377266423Sjfv \ 2378266423Sjfv product(bool, AlwaysCompileLoopMethods, false, \ 2379266423Sjfv "when using recompilation, never interpret methods " \ 2380266423Sjfv "containing loops") \ 2381266423Sjfv \ 2382266423Sjfv product(bool, DontCompileHugeMethods, true, \ 2383266423Sjfv "don't compile methods > HugeMethodLimit") \ 2384266423Sjfv \ 2385266423Sjfv /* Bytecode escape analysis estimation. */ \ 2386266423Sjfv product(bool, EstimateArgEscape, true, \ 2387266423Sjfv "Analyze bytecodes to estimate escape state of arguments") \ 2388266423Sjfv \ 2389266423Sjfv product(intx, BCEATraceLevel, 0, \ 2390266423Sjfv "How much tracing to do of bytecode escape analysis estimates") \ 2391266423Sjfv \ 2392266423Sjfv product(intx, MaxBCEAEstimateLevel, 5, \ 2393266423Sjfv "Maximum number of nested calls that are analyzed by BC EA.") \ 2394266423Sjfv \ 2395266423Sjfv product(intx, MaxBCEAEstimateSize, 150, \ 2396266423Sjfv "Maximum bytecode size of a method to be analyzed by BC EA.") \ 2397266423Sjfv \ 2398266423Sjfv product(intx, AllocatePrefetchStyle, 1, \ 2399266423Sjfv "0 = no prefetch, " \ 2400266423Sjfv "1 = prefetch instructions for each allocation, " \ 2401266423Sjfv "2 = use TLAB watermark to gate allocation prefetch") \ 2402266423Sjfv \ 2403266423Sjfv product(intx, AllocatePrefetchDistance, -1, \ 2404266423Sjfv "Distance to prefetch ahead of allocation pointer") \ 2405266423Sjfv \ 2406266423Sjfv product(intx, AllocatePrefetchLines, 1, \ 2407266423Sjfv "Number of lines to prefetch ahead of allocation pointer") \ 2408266423Sjfv \ 2409266423Sjfv product(intx, AllocatePrefetchStepSize, 16, \ 2410266423Sjfv "Step size in bytes of sequential prefetch instructions") \ 2411266423Sjfv \ 2412266423Sjfv product(intx, AllocatePrefetchInstr, 0, \ 2413266423Sjfv "Prefetch instruction to prefetch ahead of allocation pointer") \ 2414266423Sjfv \ 2415266423Sjfv product(intx, ReadPrefetchInstr, 0, \ 2416266423Sjfv "Prefetch instruction to prefetch ahead") \ 2417266423Sjfv \ 2418266423Sjfv /* deoptimization */ \ 2419266423Sjfv develop(bool, TraceDeoptimization, false, \ 2420266423Sjfv "Trace deoptimization") \ 2421266423Sjfv \ 2422266423Sjfv develop(bool, DebugDeoptimization, false, \ 2423266423Sjfv "Tracing various information while debugging deoptimization") \ 2424266423Sjfv \ 2425266423Sjfv product(intx, SelfDestructTimer, 0, \ 2426266423Sjfv "Will cause VM to terminate after a given time (in minutes) " \ 2427266423Sjfv "(0 means off)") \ 2428266423Sjfv \ 2429266423Sjfv product(intx, MaxJavaStackTraceDepth, 1024, \ 2430266423Sjfv "Max. no. of lines in the stack trace for Java exceptions " \ 2431266423Sjfv "(0 means all)") \ 2432266423Sjfv \ 2433266423Sjfv develop(intx, GuaranteedSafepointInterval, 1000, \ 2434266423Sjfv "Guarantee a safepoint (at least) every so many milliseconds " \ 2435266423Sjfv "(0 means none)") \ 2436266423Sjfv \ 2437266423Sjfv product(intx, SafepointTimeoutDelay, 10000, \ 2438266423Sjfv "Delay in milliseconds for option SafepointTimeout") \ 2439266423Sjfv \ 2440266423Sjfv product(intx, NmethodSweepFraction, 4, \ 2441266423Sjfv "Number of invocations of sweeper to cover all nmethods") \ 2442266423Sjfv \ 2443266423Sjfv notproduct(intx, MemProfilingInterval, 500, \ 2444266423Sjfv "Time between each invocation of the MemProfiler") \ 2445266423Sjfv \ 2446266423Sjfv develop(intx, MallocCatchPtr, -1, \ 2447266423Sjfv "Hit breakpoint when mallocing/freeing this pointer") \ 2448266423Sjfv \ 2449266423Sjfv notproduct(intx, AssertRepeat, 1, \ 2450266423Sjfv "number of times to evaluate expression in assert " \ 2451266423Sjfv "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ 2452266423Sjfv \ 2453266423Sjfv notproduct(ccstrlist, SuppressErrorAt, "", \ 2454266423Sjfv "List of assertions (file:line) to muzzle") \ 2455266423Sjfv \ 2456266423Sjfv notproduct(uintx, HandleAllocationLimit, 1024, \ 2457266423Sjfv "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 2458266423Sjfv "is used") \ 2459266423Sjfv \ 2460266423Sjfv develop(uintx, TotalHandleAllocationLimit, 1024, \ 2461266423Sjfv "Threshold for total handle allocation when " \ 2462266423Sjfv "+TraceHandleAllocation is used") \ 2463266423Sjfv \ 2464266423Sjfv develop(intx, StackPrintLimit, 100, \ 2465266423Sjfv "number of stack frames to print in VM-level stack dump") \ 2466266423Sjfv \ 2467266423Sjfv notproduct(intx, MaxElementPrintSize, 256, \ 2468266423Sjfv "maximum number of elements to print") \ 2469266423Sjfv \ 2470266423Sjfv notproduct(intx, MaxSubklassPrintSize, 4, \ 2471266423Sjfv "maximum number of subklasses to print when printing klass") \ 2472266423Sjfv \ 2473266423Sjfv develop(intx, MaxInlineLevel, 9, \ 2474266423Sjfv "maximum number of nested calls that are inlined") \ 2475266423Sjfv \ 2476266423Sjfv develop(intx, MaxRecursiveInlineLevel, 1, \ 2477266423Sjfv "maximum number of nested recursive calls that are inlined") \ 2478266423Sjfv \ 2479266423Sjfv develop(intx, InlineSmallCode, 1000, \ 2480266423Sjfv "Only inline already compiled methods if their code size is " \ 2481266423Sjfv "less than this") \ 2482266423Sjfv \ 2483266423Sjfv product(intx, MaxInlineSize, 35, \ 2484266423Sjfv "maximum bytecode size of a method to be inlined") \ 2485266423Sjfv \ 2486266423Sjfv product_pd(intx, FreqInlineSize, \ 2487266423Sjfv "maximum bytecode size of a frequent method to be inlined") \ 2488266423Sjfv \ 2489266423Sjfv develop(intx, MaxTrivialSize, 6, \ 2490266423Sjfv "maximum bytecode size of a trivial method to be inlined") \ 2491266423Sjfv \ 2492266423Sjfv develop(intx, MinInliningThreshold, 250, \ 2493266423Sjfv "min. invocation count a method needs to have to be inlined") \ 2494266423Sjfv \ 2495266423Sjfv develop(intx, AlignEntryCode, 4, \ 2496266423Sjfv "aligns entry code to specified value (in bytes)") \ 2497266423Sjfv \ 2498266423Sjfv develop(intx, MethodHistogramCutoff, 100, \ 2499266423Sjfv "cutoff value for method invoc. histogram (+CountCalls)") \ 2500266423Sjfv \ 2501266423Sjfv develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2502266423Sjfv "# of interpreted methods to show in profile") \ 2503266423Sjfv \ 2504266423Sjfv develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 2505266423Sjfv "# of compiled methods to show in profile") \ 2506266423Sjfv \ 2507266423Sjfv develop(intx, ProfilerNumberOfStubMethods, 25, \ 2508266423Sjfv "# of stub methods to show in profile") \ 2509266423Sjfv \ 2510266423Sjfv develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2511266423Sjfv "# of runtime stub nodes to show in profile") \ 2512266423Sjfv \ 2513266423Sjfv product(intx, ProfileIntervalsTicks, 100, \ 2514266423Sjfv "# of ticks between printing of interval profile " \ 2515266423Sjfv "(+ProfileIntervals)") \ 2516266423Sjfv \ 2517266423Sjfv notproduct(intx, ScavengeALotInterval, 1, \ 2518266423Sjfv "Interval between which scavenge will occur with +ScavengeALot") \ 2519266423Sjfv \ 2520266423Sjfv notproduct(intx, FullGCALotInterval, 1, \ 2521266423Sjfv "Interval between which full gc will occur with +FullGCALot") \ 2522266423Sjfv \ 2523266423Sjfv notproduct(intx, FullGCALotStart, 0, \ 2524266423Sjfv "For which invocation to start FullGCAlot") \ 2525266423Sjfv \ 2526266423Sjfv notproduct(intx, FullGCALotDummies, 32*K, \ 2527266423Sjfv "Dummy object allocated with +FullGCALot, forcing all objects " \ 2528266423Sjfv "to move") \ 2529266423Sjfv \ 2530266423Sjfv develop(intx, DontYieldALotInterval, 10, \ 2531266423Sjfv "Interval between which yields will be dropped (milliseconds)") \ 2532266423Sjfv \ 2533266423Sjfv develop(intx, MinSleepInterval, 1, \ 2534266423Sjfv "Minimum sleep() interval (milliseconds) when " \ 2535266423Sjfv "ConvertSleepToYield is off (used for SOLARIS)") \ 2536266423Sjfv \ 2537266423Sjfv product(intx, EventLogLength, 2000, \ 2538266423Sjfv "maximum nof events in event log") \ 2539266423Sjfv \ 2540266423Sjfv develop(intx, ProfilerPCTickThreshold, 15, \ 2541266423Sjfv "Number of ticks in a PC buckets to be a hotspot") \ 2542266423Sjfv \ 2543266423Sjfv notproduct(intx, DeoptimizeALotInterval, 5, \ 2544266423Sjfv "Number of exits until DeoptimizeALot kicks in") \ 2545266423Sjfv \ 2546266423Sjfv notproduct(intx, ZombieALotInterval, 5, \ 2547266423Sjfv "Number of exits until ZombieALot kicks in") \ 2548266423Sjfv \ 2549266423Sjfv develop(bool, StressNonEntrant, false, \ 2550266423Sjfv "Mark nmethods non-entrant at registration") \ 2551266423Sjfv \ 2552266423Sjfv diagnostic(intx, MallocVerifyInterval, 0, \ 2553266423Sjfv "if non-zero, verify C heap after every N calls to " \ 2554266423Sjfv "malloc/realloc/free") \ 2555266423Sjfv \ 2556266423Sjfv diagnostic(intx, MallocVerifyStart, 0, \ 2557266423Sjfv "if non-zero, start verifying C heap after Nth call to " \ 2558266423Sjfv "malloc/realloc/free") \ 2559266423Sjfv \ 2560266423Sjfv product(intx, TypeProfileWidth, 2, \ 2561266423Sjfv "number of receiver types to record in call/cast profile") \ 2562266423Sjfv \ 2563266423Sjfv develop(intx, BciProfileWidth, 2, \ 2564266423Sjfv "number of return bci's to record in ret profile") \ 2565266423Sjfv \ 2566266423Sjfv product(intx, PerMethodRecompilationCutoff, 400, \ 2567266423Sjfv "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 2568266423Sjfv \ 2569266423Sjfv product(intx, PerBytecodeRecompilationCutoff, 100, \ 2570266423Sjfv "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 2571266423Sjfv \ 2572266423Sjfv product(intx, PerMethodTrapLimit, 100, \ 2573266423Sjfv "Limit on traps (of one kind) in a method (includes inlines)") \ 2574266423Sjfv \ 2575266423Sjfv product(intx, PerBytecodeTrapLimit, 4, \ 2576266423Sjfv "Limit on traps (of one kind) at a particular BCI") \ 2577266423Sjfv \ 2578266423Sjfv develop(intx, FreqCountInvocations, 1, \ 2579266423Sjfv "Scaling factor for branch frequencies (deprecated)") \ 2580266423Sjfv \ 2581266423Sjfv develop(intx, InlineFrequencyRatio, 20, \ 2582266423Sjfv "Ratio of call site execution to caller method invocation") \ 2583266423Sjfv \ 2584266423Sjfv develop_pd(intx, InlineFrequencyCount, \ 2585266423Sjfv "Count of call site execution necessary to trigger frequent " \ 2586266423Sjfv "inlining") \ 2587266423Sjfv \ 2588266423Sjfv develop(intx, InlineThrowCount, 50, \ 2589266423Sjfv "Force inlining of interpreted methods that throw this often") \ 2590266423Sjfv \ 2591266423Sjfv develop(intx, InlineThrowMaxSize, 200, \ 2592266423Sjfv "Force inlining of throwing methods smaller than this") \ 2593266423Sjfv \ 2594266423Sjfv product(intx, AliasLevel, 3, \ 2595266423Sjfv "0 for no aliasing, 1 for oop/field/static/array split, " \ 2596266423Sjfv "2 for class split, 3 for unique instances") \ 2597266423Sjfv \ 2598266423Sjfv develop(bool, VerifyAliases, false, \ 2599266423Sjfv "perform extra checks on the results of alias analysis") \ 2600266423Sjfv \ 2601266423Sjfv develop(intx, ProfilerNodeSize, 1024, \ 2602266423Sjfv "Size in K to allocate for the Profile Nodes of each thread") \ 2603266423Sjfv \ 2604266423Sjfv develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ 2605266423Sjfv "Number of times to spin wait on a v8 atomic operation lock") \ 2606266423Sjfv \ 2607266423Sjfv product(intx, ReadSpinIterations, 100, \ 2608266423Sjfv "Number of read attempts before a yield (spin inner loop)") \ 2609266423Sjfv \ 2610266423Sjfv product_pd(intx, PreInflateSpin, \ 2611266423Sjfv "Number of times to spin wait before inflation") \ 2612266423Sjfv \ 2613266423Sjfv product(intx, PreBlockSpin, 10, \ 2614266423Sjfv "Number of times to spin in an inflated lock before going to " \ 2615266423Sjfv "an OS lock") \ 2616266423Sjfv \ 2617266423Sjfv /* gc parameters */ \ 2618266423Sjfv product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \ 2619266423Sjfv "Default maximum size for object heap (in bytes)") \ 2620266423Sjfv \ 2621266423Sjfv product_pd(uintx, NewSize, \ 2622266423Sjfv "Default size of new generation (in bytes)") \ 2623266423Sjfv \ 2624266423Sjfv product(uintx, MaxNewSize, max_uintx, \ 2625266423Sjfv "Maximum size of new generation (in bytes)") \ 2626266423Sjfv \ 2627266423Sjfv product(uintx, PretenureSizeThreshold, 0, \ 2628266423Sjfv "Max size in bytes of objects allocated in DefNew generation") \ 2629266423Sjfv \ 2630266423Sjfv product_pd(uintx, TLABSize, \ 2631266423Sjfv "Default (or starting) size of TLAB (in bytes)") \ 2632266423Sjfv \ 2633266423Sjfv product(uintx, MinTLABSize, 2*K, \ 2634266423Sjfv "Minimum allowed TLAB size (in bytes)") \ 2635266423Sjfv \ 2636266423Sjfv product(uintx, TLABAllocationWeight, 35, \ 2637266423Sjfv "Allocation averaging weight") \ 2638266423Sjfv \ 2639266423Sjfv product(uintx, TLABWasteTargetPercent, 1, \ 2640266423Sjfv "Percentage of Eden that can be wasted") \ 2641266423Sjfv \ 2642266423Sjfv product(uintx, TLABRefillWasteFraction, 64, \ 2643266423Sjfv "Max TLAB waste at a refill (internal fragmentation)") \ 2644266423Sjfv \ 2645266423Sjfv product(uintx, TLABWasteIncrement, 4, \ 2646266423Sjfv "Increment allowed waste at slow allocation") \ 2647266423Sjfv \ 2648266423Sjfv product_pd(intx, SurvivorRatio, \ 2649266423Sjfv "Ratio of eden/survivor space size") \ 2650266423Sjfv \ 2651266423Sjfv product_pd(intx, NewRatio, \ 2652266423Sjfv "Ratio of new/old generation sizes") \ 2653266423Sjfv \ 2654266423Sjfv product(uintx, MaxLiveObjectEvacuationRatio, 100, \ 2655266423Sjfv "Max percent of eden objects that will be live at scavenge") \ 2656266423Sjfv \ 2657266423Sjfv product_pd(uintx, NewSizeThreadIncrease, \ 2658266423Sjfv "Additional size added to desired new generation size per " \ 2659266423Sjfv "non-daemon thread (in bytes)") \ 2660266423Sjfv \ 2661266423Sjfv product(uintx, OldSize, ScaleForWordSize(4096*K), \ 2662266423Sjfv "Default size of tenured generation (in bytes)") \ 2663266423Sjfv \ 2664266423Sjfv product_pd(uintx, PermSize, \ 2665266423Sjfv "Default size of permanent generation (in bytes)") \ 2666266423Sjfv \ 2667266423Sjfv product_pd(uintx, MaxPermSize, \ 2668266423Sjfv "Maximum size of permanent generation (in bytes)") \ 2669266423Sjfv \ 2670266423Sjfv product(uintx, MinHeapFreeRatio, 40, \ 2671266423Sjfv "Min percentage of heap free after GC to avoid expansion") \ 2672266423Sjfv \ 2673266423Sjfv product(uintx, MaxHeapFreeRatio, 70, \ 2674266423Sjfv "Max percentage of heap free after GC to avoid shrinking") \ 2675266423Sjfv \ 2676266423Sjfv product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 2677266423Sjfv "Number of milliseconds per MB of free space in the heap") \ 2678266423Sjfv \ 2679266423Sjfv product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 2680266423Sjfv "Min change in heap space due to GC (in bytes)") \ 2681266423Sjfv \ 2682266423Sjfv product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ 2683266423Sjfv "Min expansion of permanent heap (in bytes)") \ 2684266423Sjfv \ 2685266423Sjfv product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ 2686266423Sjfv "Max expansion of permanent heap without full GC (in bytes)") \ 2687266423Sjfv \ 2688266423Sjfv product(intx, QueuedAllocationWarningCount, 0, \ 2689266423Sjfv "Number of times an allocation that queues behind a GC " \ 2690266423Sjfv "will retry before printing a warning") \ 2691266423Sjfv \ 2692266423Sjfv diagnostic(uintx, VerifyGCStartAt, 0, \ 2693266423Sjfv "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 2694266423Sjfv \ 2695266423Sjfv diagnostic(intx, VerifyGCLevel, 0, \ 2696266423Sjfv "Generation level at which to start +VerifyBefore/AfterGC") \ 2697266423Sjfv \ 2698266423Sjfv develop(uintx, ExitAfterGCNum, 0, \ 2699266423Sjfv "If non-zero, exit after this GC.") \ 2700266423Sjfv \ 2701266423Sjfv product(intx, MaxTenuringThreshold, 15, \ 2702266423Sjfv "Maximum value for tenuring threshold") \ 2703266423Sjfv \ 2704266423Sjfv product(intx, InitialTenuringThreshold, 7, \ 2705266423Sjfv "Initial value for tenuring threshold") \ 2706266423Sjfv \ 2707266423Sjfv product(intx, TargetSurvivorRatio, 50, \ 2708266423Sjfv "Desired percentage of survivor space used after scavenge") \ 2709266423Sjfv \ 2710266423Sjfv product(intx, MarkSweepDeadRatio, 5, \ 2711266423Sjfv "Percentage (0-100) of the old gen allowed as dead wood." \ 2712266423Sjfv "Serial mark sweep treats this as both the min and max value." \ 2713266423Sjfv "CMS uses this value only if it falls back to mark sweep." \ 2714266423Sjfv "Par compact uses a variable scale based on the density of the" \ 2715266423Sjfv "generation and treats this as the max value when the heap is" \ 2716266423Sjfv "either completely full or completely empty. Par compact also" \ 2717266423Sjfv "has a smaller default value; see arguments.cpp.") \ 2718266423Sjfv \ 2719266423Sjfv product(intx, PermMarkSweepDeadRatio, 20, \ 2720266423Sjfv "Percentage (0-100) of the perm gen allowed as dead wood." \ 2721266423Sjfv "See MarkSweepDeadRatio for collector-specific comments.") \ 2722266423Sjfv \ 2723266423Sjfv product(intx, MarkSweepAlwaysCompactCount, 4, \ 2724266423Sjfv "How often should we fully compact the heap (ignoring the dead " \ 2725266423Sjfv "space parameters)") \ 2726266423Sjfv \ 2727266423Sjfv product(intx, PrintCMSStatistics, 0, \ 2728266423Sjfv "Statistics for CMS") \ 2729266423Sjfv \ 2730266423Sjfv product(bool, PrintCMSInitiationStatistics, false, \ 2731266423Sjfv "Statistics for initiating a CMS collection") \ 2732266423Sjfv \ 2733266423Sjfv product(intx, PrintFLSStatistics, 0, \ 2734266423Sjfv "Statistics for CMS' FreeListSpace") \ 2735266423Sjfv \ 2736266423Sjfv product(intx, PrintFLSCensus, 0, \ 2737266423Sjfv "Census for CMS' FreeListSpace") \ 2738266423Sjfv \ 2739266423Sjfv develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 2740266423Sjfv "Delay in ms between expansion and allocation") \ 2741266423Sjfv \ 2742266423Sjfv product(intx, DeferThrSuspendLoopCount, 4000, \ 2743266423Sjfv "(Unstable) Number of times to iterate in safepoint loop " \ 2744266423Sjfv " before blocking VM threads ") \ 2745266423Sjfv \ 2746266423Sjfv product(intx, DeferPollingPageLoopCount, -1, \ 2747266423Sjfv "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 2748266423Sjfv "before changing safepoint polling page to RO ") \ 2749266423Sjfv \ 2750266423Sjfv product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 2751266423Sjfv \ 2752266423Sjfv product(bool, UseDepthFirstScavengeOrder, true, \ 2753266423Sjfv "true: the scavenge order will be depth-first, " \ 2754266423Sjfv "false: the scavenge order will be breadth-first") \ 2755266423Sjfv \ 2756266423Sjfv product(bool, PSChunkLargeArrays, true, \ 2757266423Sjfv "true: process large arrays in chunks") \ 2758266423Sjfv \ 2759266423Sjfv product(uintx, GCDrainStackTargetSize, 64, \ 2760266423Sjfv "how many entries we'll try to leave on the stack during " \ 2761266423Sjfv "parallel GC") \ 2762266423Sjfv \ 2763266423Sjfv /* stack parameters */ \ 2764266423Sjfv product_pd(intx, StackYellowPages, \ 2765266423Sjfv "Number of yellow zone (recoverable overflows) pages") \ 2766266423Sjfv \ 2767266423Sjfv product_pd(intx, StackRedPages, \ 2768266423Sjfv "Number of red zone (unrecoverable overflows) pages") \ 2769266423Sjfv \ 2770266423Sjfv product_pd(intx, StackShadowPages, \ 2771266423Sjfv "Number of shadow zone (for overflow checking) pages" \ 2772266423Sjfv " this should exceed the depth of the VM and native call stack") \ 2773266423Sjfv \ 2774266423Sjfv product_pd(intx, ThreadStackSize, \ 2775266423Sjfv "Thread Stack Size (in Kbytes)") \ 2776266423Sjfv \ 2777266423Sjfv product_pd(intx, VMThreadStackSize, \ 2778266423Sjfv "Non-Java Thread Stack Size (in Kbytes)") \ 2779266423Sjfv \ 2780266423Sjfv product_pd(intx, CompilerThreadStackSize, \ 2781266423Sjfv "Compiler Thread Stack Size (in Kbytes)") \ 2782266423Sjfv \ 2783266423Sjfv develop_pd(uintx, JVMInvokeMethodSlack, \ 2784266423Sjfv "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 2785266423Sjfv \ 2786266423Sjfv product(uintx, ThreadSafetyMargin, 50*M, \ 2787266423Sjfv "Thread safety margin is used on fixed-stack LinuxThreads (on " \ 2788266423Sjfv "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ 2789266423Sjfv "disable this feature") \ 2790266423Sjfv \ 2791266423Sjfv /* code cache parameters */ \ 2792266423Sjfv develop(uintx, CodeCacheSegmentSize, 64, \ 2793266423Sjfv "Code cache segment size (in bytes) - smallest unit of " \ 2794266423Sjfv "allocation") \ 2795266423Sjfv \ 2796266423Sjfv develop_pd(intx, CodeEntryAlignment, \ 2797266423Sjfv "Code entry alignment for generated code (in bytes)") \ 2798266423Sjfv \ 2799266423Sjfv product_pd(uintx, InitialCodeCacheSize, \ 2800266423Sjfv "Initial code cache size (in bytes)") \ 2801266423Sjfv \ 2802266423Sjfv product_pd(uintx, ReservedCodeCacheSize, \ 2803266423Sjfv "Reserved code cache size (in bytes) - maximum code cache size") \ 2804266423Sjfv \ 2805266423Sjfv product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ 2806266423Sjfv "When less than X space left, we stop compiling.") \ 2807266423Sjfv \ 2808266423Sjfv product_pd(uintx, CodeCacheExpansionSize, \ 2809266423Sjfv "Code cache expansion size (in bytes)") \ 2810266423Sjfv \ 2811266423Sjfv develop_pd(uintx, CodeCacheMinBlockLength, \ 2812266423Sjfv "Minimum number of segments in a code cache block.") \ 2813266423Sjfv \ 2814266423Sjfv notproduct(bool, ExitOnFullCodeCache, false, \ 2815266423Sjfv "Exit the VM if we fill the code cache.") \ 2816266423Sjfv \ 2817266423Sjfv /* interpreter debugging */ \ 2818266423Sjfv develop(intx, BinarySwitchThreshold, 5, \ 2819266423Sjfv "Minimal number of lookupswitch entries for rewriting to binary " \ 2820266423Sjfv "switch") \ 2821266423Sjfv \ 2822266423Sjfv develop(intx, StopInterpreterAt, 0, \ 2823266423Sjfv "Stops interpreter execution at specified bytecode number") \ 2824266423Sjfv \ 2825266423Sjfv develop(intx, TraceBytecodesAt, 0, \ 2826266423Sjfv "Traces bytecodes starting with specified bytecode number") \ 2827266423Sjfv \ 2828266423Sjfv /* compiler interface */ \ 2829266423Sjfv develop(intx, CIStart, 0, \ 2830266423Sjfv "the id of the first compilation to permit") \ 2831266423Sjfv \ 2832266423Sjfv develop(intx, CIStop, -1, \ 2833266423Sjfv "the id of the last compilation to permit") \ 2834266423Sjfv \ 2835266423Sjfv develop(intx, CIStartOSR, 0, \ 2836266423Sjfv "the id of the first osr compilation to permit " \ 2837266423Sjfv "(CICountOSR must be on)") \ 2838266423Sjfv \ 2839266423Sjfv develop(intx, CIStopOSR, -1, \ 2840266423Sjfv "the id of the last osr compilation to permit " \ 2841266423Sjfv "(CICountOSR must be on)") \ 2842266423Sjfv \ 2843266423Sjfv develop(intx, CIBreakAtOSR, -1, \ 2844266423Sjfv "id of osr compilation to break at") \ 2845266423Sjfv \ 2846266423Sjfv develop(intx, CIBreakAt, -1, \ 2847266423Sjfv "id of compilation to break at") \ 2848266423Sjfv \ 2849266423Sjfv product(ccstrlist, CompileOnly, "", \ 2850266423Sjfv "List of methods (pkg/class.name) to restrict compilation to") \ 2851266423Sjfv \ 2852266423Sjfv product(ccstr, CompileCommandFile, NULL, \ 2853266423Sjfv "Read compiler commands from this file [.hotspot_compiler]") \ 2854266423Sjfv \ 2855266423Sjfv product(ccstrlist, CompileCommand, "", \ 2856266423Sjfv "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 2857266423Sjfv \ 2858266423Sjfv product(bool, CICompilerCountPerCPU, false, \ 2859266423Sjfv "1 compiler thread for log(N CPUs)") \ 2860266423Sjfv \ 2861266423Sjfv develop(intx, CIFireOOMAt, -1, \ 2862266423Sjfv "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 2863266423Sjfv "(non-negative value throws OOM after this many CI accesses " \ 2864266423Sjfv "in each compile)") \ 2865266423Sjfv \ 2866266423Sjfv develop(intx, CIFireOOMAtDelay, -1, \ 2867266423Sjfv "Wait for this many CI accesses to occur in all compiles before " \ 2868266423Sjfv "beginning to throw OutOfMemoryErrors in each compile") \ 2869266423Sjfv \ 2870266423Sjfv /* Priorities */ \ 2871266423Sjfv product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 2872266423Sjfv \ 2873266423Sjfv product(intx, ThreadPriorityPolicy, 0, \ 2874266423Sjfv "0 : Normal. "\ 2875266423Sjfv " VM chooses priorities that are appropriate for normal "\ 2876266423Sjfv " applications. On Solaris NORM_PRIORITY and above are mapped "\ 2877266423Sjfv " to normal native priority. Java priorities below NORM_PRIORITY"\ 2878266423Sjfv " map to lower native priority values. On Windows applications"\ 2879266423Sjfv " are allowed to use higher native priorities. However, with "\ 2880266423Sjfv " ThreadPriorityPolicy=0, VM will not use the highest possible"\ 2881266423Sjfv " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ 2882266423Sjfv " interfere with system threads. On Linux thread priorities "\ 2883266423Sjfv " are ignored because the OS does not support static priority "\ 2884266423Sjfv " in SCHED_OTHER scheduling class which is the only choice for"\ 2885266423Sjfv " non-root, non-realtime applications. "\ 2886266423Sjfv "1 : Aggressive. "\ 2887266423Sjfv " Java thread priorities map over to the entire range of "\ 2888266423Sjfv " native thread priorities. Higher Java thread priorities map "\ 2889266423Sjfv " to higher native thread priorities. This policy should be "\ 2890266423Sjfv " used with care, as sometimes it can cause performance "\ 2891266423Sjfv " degradation in the application and/or the entire system. On "\ 2892266423Sjfv " Linux this policy requires root privilege.") \ 2893266423Sjfv \ 2894266423Sjfv product(bool, ThreadPriorityVerbose, false, \ 2895266423Sjfv "print priority changes") \ 2896266423Sjfv \ 2897266423Sjfv product(intx, DefaultThreadPriority, -1, \ 2898266423Sjfv "what native priority threads run at if not specified elsewhere (-1 means no change)") \ 2899266423Sjfv \ 2900266423Sjfv product(intx, CompilerThreadPriority, -1, \ 2901266423Sjfv "what priority should compiler threads run at (-1 means no change)") \ 2902266423Sjfv \ 2903266423Sjfv product(intx, VMThreadPriority, -1, \ 2904266423Sjfv "what priority should VM threads run at (-1 means no change)") \ 2905266423Sjfv \ 2906266423Sjfv product(bool, CompilerThreadHintNoPreempt, true, \ 2907266423Sjfv "(Solaris only) Give compiler threads an extra quanta") \ 2908266423Sjfv \ 2909266423Sjfv product(bool, VMThreadHintNoPreempt, false, \ 2910266423Sjfv "(Solaris only) Give VM thread an extra quanta") \ 2911266423Sjfv \ 2912266423Sjfv product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2913266423Sjfv product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2914266423Sjfv product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2915266423Sjfv product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2916266423Sjfv product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2917266423Sjfv product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2918266423Sjfv product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2919266423Sjfv product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2920266423Sjfv product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 2921266423Sjfv product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ 2922266423Sjfv \ 2923266423Sjfv /* compiler debugging */ \ 2924266423Sjfv notproduct(intx, CompileTheWorldStartAt, 1, \ 2925266423Sjfv "First class to consider when using +CompileTheWorld") \ 2926266423Sjfv \ 2927266423Sjfv notproduct(intx, CompileTheWorldStopAt, max_jint, \ 2928266423Sjfv "Last class to consider when using +CompileTheWorld") \ 2929266423Sjfv \ 2930266423Sjfv develop(intx, NewCodeParameter, 0, \ 2931266423Sjfv "Testing Only: Create a dedicated integer parameter before " \ 2932266423Sjfv "putback") \ 2933266423Sjfv \ 2934266423Sjfv /* new oopmap storage allocation */ \ 2935266423Sjfv develop(intx, MinOopMapAllocation, 8, \ 2936266423Sjfv "Minimum number of OopMap entries in an OopMapSet") \ 2937266423Sjfv \ 2938266423Sjfv /* Background Compilation */ \ 2939266423Sjfv develop(intx, LongCompileThreshold, 50, \ 2940266423Sjfv "Used with +TraceLongCompiles") \ 2941266423Sjfv \ 2942266423Sjfv product(intx, StarvationMonitorInterval, 200, \ 2943266423Sjfv "Pause between each check in ms") \ 2944266423Sjfv \ 2945266423Sjfv /* recompilation */ \ 2946266423Sjfv product_pd(intx, CompileThreshold, \ 2947266423Sjfv "number of interpreted method invocations before (re-)compiling") \ 2948266423Sjfv \ 2949266423Sjfv product_pd(intx, BackEdgeThreshold, \ 2950266423Sjfv "Interpreter Back edge threshold at which an OSR compilation is invoked")\ 2951266423Sjfv \ 2952266423Sjfv product(intx, Tier1BytecodeLimit, 10, \ 2953266423Sjfv "Must have at least this many bytecodes before tier1" \ 2954266423Sjfv "invocation counters are used") \ 2955266423Sjfv \ 2956266423Sjfv product_pd(intx, Tier2CompileThreshold, \ 2957266423Sjfv "threshold at which a tier 2 compilation is invoked") \ 2958266423Sjfv \ 2959266423Sjfv product_pd(intx, Tier2BackEdgeThreshold, \ 2960266423Sjfv "Back edge threshold at which a tier 2 compilation is invoked") \ 2961266423Sjfv \ 2962266423Sjfv product_pd(intx, Tier3CompileThreshold, \ 2963266423Sjfv "threshold at which a tier 3 compilation is invoked") \ 2964266423Sjfv \ 2965266423Sjfv product_pd(intx, Tier3BackEdgeThreshold, \ 2966266423Sjfv "Back edge threshold at which a tier 3 compilation is invoked") \ 2967266423Sjfv \ 2968266423Sjfv product_pd(intx, Tier4CompileThreshold, \ 2969266423Sjfv "threshold at which a tier 4 compilation is invoked") \ 2970266423Sjfv \ 2971266423Sjfv product_pd(intx, Tier4BackEdgeThreshold, \ 2972266423Sjfv "Back edge threshold at which a tier 4 compilation is invoked") \ 2973266423Sjfv \ 2974266423Sjfv product_pd(bool, TieredCompilation, \ 2975266423Sjfv "Enable two-tier compilation") \ 2976266423Sjfv \ 2977266423Sjfv product(bool, StressTieredRuntime, false, \ 2978266423Sjfv "Alternate client and server compiler on compile requests") \ 2979266423Sjfv \ 2980266423Sjfv product_pd(intx, OnStackReplacePercentage, \ 2981266423Sjfv "NON_TIERED number of method invocations/branches (expressed as %"\ 2982266423Sjfv "of CompileThreshold) before (re-)compiling OSR code") \ 2983266423Sjfv \ 2984266423Sjfv product(intx, InterpreterProfilePercentage, 33, \ 2985266423Sjfv "NON_TIERED number of method invocations/branches (expressed as %"\ 2986266423Sjfv "of CompileThreshold) before profiling in the interpreter") \ 2987266423Sjfv \ 2988266423Sjfv develop(intx, MaxRecompilationSearchLength, 10, \ 2989266423Sjfv "max. # frames to inspect searching for recompilee") \ 2990266423Sjfv \ 2991266423Sjfv develop(intx, MaxInterpretedSearchLength, 3, \ 2992266423Sjfv "max. # interp. frames to skip when searching for recompilee") \ 2993266423Sjfv \ 2994266423Sjfv develop(intx, DesiredMethodLimit, 8000, \ 2995266423Sjfv "desired max. method size (in bytecodes) after inlining") \ 2996266423Sjfv \ 2997266423Sjfv develop(intx, HugeMethodLimit, 8000, \ 2998266423Sjfv "don't compile methods larger than this if " \ 2999266423Sjfv "+DontCompileHugeMethods") \ 3000266423Sjfv \ 3001266423Sjfv /* New JDK 1.4 reflection implementation */ \ 3002266423Sjfv \ 3003266423Sjfv develop(bool, UseNewReflection, true, \ 3004266423Sjfv "Temporary flag for transition to reflection based on dynamic " \ 3005266423Sjfv "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ 3006266423Sjfv "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ 3007266423Sjfv "changes were needed") \ 3008266423Sjfv \ 3009266423Sjfv develop(bool, VerifyReflectionBytecodes, false, \ 3010266423Sjfv "Force verification of 1.4 reflection bytecodes. Does not work " \ 3011266423Sjfv "in situations like that described in 4486457 or for " \ 3012266423Sjfv "constructors generated for serialization, so can not be enabled "\ 3013266423Sjfv "in product.") \ 3014266423Sjfv \ 3015266423Sjfv product(bool, ReflectionWrapResolutionErrors, true, \ 3016266423Sjfv "Temporary flag for transition to AbstractMethodError wrapped " \ 3017266423Sjfv "in InvocationTargetException. See 6531596") \ 3018266423Sjfv \ 3019266423Sjfv \ 3020266423Sjfv develop(intx, FastSuperclassLimit, 8, \ 3021266423Sjfv "Depth of hardwired instanceof accelerator array") \ 3022266423Sjfv \ 3023266423Sjfv /* Properties for Java libraries */ \ 3024266423Sjfv \ 3025266423Sjfv product(intx, MaxDirectMemorySize, -1, \ 3026266423Sjfv "Maximum total size of NIO direct-buffer allocations") \ 3027266423Sjfv \ 3028266423Sjfv /* temporary developer defined flags */ \ 3029266423Sjfv \ 3030266423Sjfv diagnostic(bool, UseNewCode, false, \ 3031266423Sjfv "Testing Only: Use the new version while testing") \ 3032266423Sjfv \ 3033266423Sjfv diagnostic(bool, UseNewCode2, false, \ 3034266423Sjfv "Testing Only: Use the new version while testing") \ 3035266423Sjfv \ 3036266423Sjfv diagnostic(bool, UseNewCode3, false, \ 3037266423Sjfv "Testing Only: Use the new version while testing") \ 3038266423Sjfv \ 3039266423Sjfv /* flags for performance data collection */ \ 3040266423Sjfv \ 3041266423Sjfv product(bool, UsePerfData, true, \ 3042266423Sjfv "Flag to disable jvmstat instrumentation for performance testing" \ 3043266423Sjfv "and problem isolation purposes.") \ 3044266423Sjfv \ 3045266423Sjfv product(bool, PerfDataSaveToFile, false, \ 3046266423Sjfv "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3047266423Sjfv \ 3048266423Sjfv product(ccstr, PerfDataSaveFile, NULL, \ 3049266423Sjfv "Save PerfData memory to the specified absolute pathname," \ 3050266423Sjfv "%p in the file name if present will be replaced by pid") \ 3051266423Sjfv \ 3052266423Sjfv product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ 3053266423Sjfv "Data sampling interval in milliseconds") \ 3054266423Sjfv \ 3055266423Sjfv develop(bool, PerfTraceDataCreation, false, \ 3056266423Sjfv "Trace creation of Performance Data Entries") \ 3057266423Sjfv \ 3058266423Sjfv develop(bool, PerfTraceMemOps, false, \ 3059266423Sjfv "Trace PerfMemory create/attach/detach calls") \ 3060266423Sjfv \ 3061266423Sjfv product(bool, PerfDisableSharedMem, false, \ 3062266423Sjfv "Store performance data in standard memory") \ 3063266423Sjfv \ 3064266423Sjfv product(intx, PerfDataMemorySize, 32*K, \ 3065266423Sjfv "Size of performance data memory region. Will be rounded " \ 3066266423Sjfv "up to a multiple of the native os page size.") \ 3067266423Sjfv \ 3068266423Sjfv product(intx, PerfMaxStringConstLength, 1024, \ 3069266423Sjfv "Maximum PerfStringConstant string length before truncation") \ 3070266423Sjfv \ 3071266423Sjfv product(bool, PerfAllowAtExitRegistration, false, \ 3072266423Sjfv "Allow registration of atexit() methods") \ 3073266423Sjfv \ 3074266423Sjfv product(bool, PerfBypassFileSystemCheck, false, \ 3075266423Sjfv "Bypass Win32 file system criteria checks (Windows Only)") \ 3076266423Sjfv \ 3077266423Sjfv product(intx, UnguardOnExecutionViolation, 0, \ 3078266423Sjfv "Unguard page and retry on no-execute fault (Win32 only)" \ 3079266423Sjfv "0=off, 1=conservative, 2=aggressive") \ 3080266423Sjfv \ 3081266423Sjfv /* Serviceability Support */ \ 3082266423Sjfv \ 3083266423Sjfv product(bool, ManagementServer, false, \ 3084266423Sjfv "Create JMX Management Server") \ 3085266423Sjfv \ 3086266423Sjfv product(bool, DisableAttachMechanism, false, \ 3087266423Sjfv "Disable mechanism that allows tools to attach to this VM") \ 3088266423Sjfv \ 3089266423Sjfv product(bool, StartAttachListener, false, \ 3090266423Sjfv "Always start Attach Listener at VM startup") \ 3091266423Sjfv \ 3092266423Sjfv manageable(bool, PrintConcurrentLocks, false, \ 3093266423Sjfv "Print java.util.concurrent locks in thread dump") \ 3094266423Sjfv \ 3095266423Sjfv /* Shared spaces */ \ 3096266423Sjfv \ 3097266423Sjfv product(bool, UseSharedSpaces, true, \ 3098266423Sjfv "Use shared spaces in the permanent generation") \ 3099266423Sjfv \ 3100266423Sjfv product(bool, RequireSharedSpaces, false, \ 3101266423Sjfv "Require shared spaces in the permanent generation") \ 3102266423Sjfv \ 3103266423Sjfv product(bool, ForceSharedSpaces, false, \ 3104266423Sjfv "Require shared spaces in the permanent generation") \ 3105266423Sjfv \ 3106266423Sjfv product(bool, DumpSharedSpaces, false, \ 3107266423Sjfv "Special mode: JVM reads a class list, loads classes, builds " \ 3108266423Sjfv "shared spaces, and dumps the shared spaces to a file to be " \ 3109266423Sjfv "used in future JVM runs.") \ 3110266423Sjfv \ 3111266423Sjfv product(bool, PrintSharedSpaces, false, \ 3112266423Sjfv "Print usage of shared spaces") \ 3113266423Sjfv \ 3114266423Sjfv product(uintx, SharedDummyBlockSize, 512*M, \ 3115266423Sjfv "Size of dummy block used to shift heap addresses (in bytes)") \ 3116266423Sjfv \ 3117266423Sjfv product(uintx, SharedReadWriteSize, 12*M, \ 3118266423Sjfv "Size of read-write space in permanent generation (in bytes)") \ 3119266423Sjfv \ 3120266423Sjfv product(uintx, SharedReadOnlySize, 8*M, \ 3121266423Sjfv "Size of read-only space in permanent generation (in bytes)") \ 3122266423Sjfv \ 3123266423Sjfv product(uintx, SharedMiscDataSize, 4*M, \ 3124266423Sjfv "Size of the shared data area adjacent to the heap (in bytes)") \ 3125266423Sjfv \ 3126266423Sjfv product(uintx, SharedMiscCodeSize, 4*M, \ 3127266423Sjfv "Size of the shared code area adjacent to the heap (in bytes)") \ 3128266423Sjfv \ 3129266423Sjfv diagnostic(bool, SharedOptimizeColdStart, true, \ 3130266423Sjfv "At dump time, order shared objects to achieve better " \ 3131266423Sjfv "cold startup time.") \ 3132266423Sjfv \ 3133266423Sjfv develop(intx, SharedOptimizeColdStartPolicy, 2, \ 3134266423Sjfv "Reordering policy for SharedOptimizeColdStart " \ 3135266423Sjfv "0=favor classload-time locality, 1=balanced, " \ 3136266423Sjfv "2=favor runtime locality") \ 3137266423Sjfv \ 3138266423Sjfv diagnostic(bool, SharedSkipVerify, false, \ 3139266423Sjfv "Skip assert() and verify() which page-in unwanted shared " \ 3140266423Sjfv "objects. ") \ 3141266423Sjfv \ 3142266423Sjfv product(bool, TaggedStackInterpreter, false, \ 3143266423Sjfv "Insert tags in interpreter execution stack for oopmap generaion")\ 3144266423Sjfv \ 3145266423Sjfv diagnostic(bool, PauseAtStartup, false, \ 3146266423Sjfv "Causes the VM to pause at startup time and wait for the pause " \ 3147266423Sjfv "file to be removed (default: ./vm.paused.<pid>)") \ 3148266423Sjfv \ 3149266423Sjfv diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3150266423Sjfv "The file to create and for whose removal to await when pausing " \ 3151266423Sjfv "at startup. (default: ./vm.paused.<pid>)") \ 3152266423Sjfv \ 3153266423Sjfv product(bool, ExtendedDTraceProbes, false, \ 3154266423Sjfv "Enable performance-impacting dtrace probes") \ 3155266423Sjfv \ 3156266423Sjfv product(bool, DTraceMethodProbes, false, \ 3157266423Sjfv "Enable dtrace probes for method-entry and method-exit") \ 3158266423Sjfv \ 3159266423Sjfv product(bool, DTraceAllocProbes, false, \ 3160266423Sjfv "Enable dtrace probes for object allocation") \ 3161266423Sjfv \ 3162266423Sjfv product(bool, DTraceMonitorProbes, false, \ 3163266423Sjfv "Enable dtrace probes for monitor events") \ 3164266423Sjfv \ 3165266423Sjfv product(bool, RelaxAccessControlCheck, false, \ 3166266423Sjfv "Relax the access control checks in the verifier") \ 3167266423Sjfv \ 3168266423Sjfv product(bool, UseVMInterruptibleIO, true, \ 3169266423Sjfv "(Unstable, Solaris-specific) Thread interrupt before or with " \ 3170266423Sjfv "EINTR for I/O operations results in OS_INTRPT") 3171266423Sjfv 3172266423Sjfv 3173266423Sjfv/* 3174266423Sjfv * Macros for factoring of globals 3175266423Sjfv */ 3176266423Sjfv 3177266423Sjfv// Interface macros 3178266423Sjfv#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3179266423Sjfv#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 3180266423Sjfv#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 3181266423Sjfv#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 3182266423Sjfv#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 3183266423Sjfv#ifdef PRODUCT 3184266423Sjfv#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 3185266423Sjfv#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 3186266423Sjfv#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) 3187266423Sjfv#else 3188266423Sjfv#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 3189266423Sjfv#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 3190266423Sjfv#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3191266423Sjfv#endif 3192266423Sjfv 3193266423Sjfv// Implementation macros 3194266423Sjfv#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 3195266423Sjfv#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 3196266423Sjfv#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 3197266423Sjfv#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 3198266423Sjfv#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 3199266423Sjfv#ifdef PRODUCT 3200266423Sjfv#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ 3201266423Sjfv#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ 3202266423Sjfv#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 3203266423Sjfv#else 3204266423Sjfv#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 3205266423Sjfv#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 3206266423Sjfv#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 3207266423Sjfv#endif 3208266423Sjfv 3209266423SjfvRUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG) 3210266423Sjfv 3211266423SjfvRUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) 3212266423Sjfv