globals.hpp revision 642:660978a2a31a
1260684Skaiw/* 2260684Skaiw * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. 3260684Skaiw * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4260684Skaiw * 5260684Skaiw * This code is free software; you can redistribute it and/or modify it 6260684Skaiw * under the terms of the GNU General Public License version 2 only, as 7260684Skaiw * published by the Free Software Foundation. 8260684Skaiw * 9260684Skaiw * This code is distributed in the hope that it will be useful, but WITHOUT 10260684Skaiw * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11260684Skaiw * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12260684Skaiw * version 2 for more details (a copy is included in the LICENSE file that 13260684Skaiw * accompanied this code). 14260684Skaiw * 15260684Skaiw * You should have received a copy of the GNU General Public License version 16260684Skaiw * 2 along with this work; if not, write to the Free Software Foundation, 17260684Skaiw * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18260684Skaiw * 19260684Skaiw * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20260684Skaiw * CA 95054 USA or visit www.sun.com if you need additional information or 21260684Skaiw * have any questions. 22260684Skaiw * 23260684Skaiw */ 24260684Skaiw 25260684Skaiw#if !defined(COMPILER1) && !defined(COMPILER2) 26260684Skaiwdefine_pd_global(bool, BackgroundCompilation, false); 27260684Skaiwdefine_pd_global(bool, UseTLAB, false); 28260684Skaiwdefine_pd_global(bool, CICompileOSR, false); 29260684Skaiwdefine_pd_global(bool, UseTypeProfile, false); 30317623Semastedefine_pd_global(bool, UseOnStackReplacement, false); 31260684Skaiwdefine_pd_global(bool, InlineIntrinsics, false); 32260684Skaiwdefine_pd_global(bool, PreferInterpreterNativeStubs, true); 33260684Skaiwdefine_pd_global(bool, ProfileInterpreter, false); 34260684Skaiwdefine_pd_global(bool, ProfileTraps, false); 35260684Skaiwdefine_pd_global(bool, TieredCompilation, false); 36260684Skaiw 37260684Skaiwdefine_pd_global(intx, CompileThreshold, 0); 38260684Skaiwdefine_pd_global(intx, Tier2CompileThreshold, 0); 39260684Skaiwdefine_pd_global(intx, Tier3CompileThreshold, 0); 40260684Skaiwdefine_pd_global(intx, Tier4CompileThreshold, 0); 41260684Skaiw 42260684Skaiwdefine_pd_global(intx, BackEdgeThreshold, 0); 43260684Skaiwdefine_pd_global(intx, Tier2BackEdgeThreshold, 0); 44260684Skaiwdefine_pd_global(intx, Tier3BackEdgeThreshold, 0); 45260684Skaiwdefine_pd_global(intx, Tier4BackEdgeThreshold, 0); 46260684Skaiw 47260684Skaiwdefine_pd_global(intx, OnStackReplacePercentage, 0); 48260684Skaiwdefine_pd_global(bool, ResizeTLAB, false); 49260684Skaiwdefine_pd_global(intx, FreqInlineSize, 0); 50260684Skaiwdefine_pd_global(intx, NewSizeThreadIncrease, 4*K); 51260684Skaiwdefine_pd_global(intx, NewRatio, 4); 52260684Skaiwdefine_pd_global(intx, InlineClassNatives, true); 53260684Skaiwdefine_pd_global(intx, InlineUnsafeOps, true); 54260684Skaiwdefine_pd_global(intx, InitialCodeCacheSize, 160*K); 55260684Skaiwdefine_pd_global(intx, ReservedCodeCacheSize, 32*M); 56260684Skaiwdefine_pd_global(intx, CodeCacheExpansionSize, 32*K); 57260684Skaiwdefine_pd_global(intx, CodeCacheMinBlockLength, 1); 58260684Skaiwdefine_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); 59260684Skaiwdefine_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); 60260684Skaiwdefine_pd_global(bool, NeverActAsServerClassMachine, true); 61260684Skaiwdefine_pd_global(uintx, DefaultMaxRAM, 1*G); 62260684Skaiw#define CI_COMPILER_COUNT 0 63260684Skaiw#else 64260684Skaiw 65260684Skaiw#ifdef COMPILER2 66260684Skaiw#define CI_COMPILER_COUNT 2 67260684Skaiw#else 68260684Skaiw#define CI_COMPILER_COUNT 1 69260684Skaiw#endif // COMPILER2 70260684Skaiw 71260684Skaiw#endif // no compilers 72260684Skaiw 73260684Skaiw 74260684Skaiw// string type aliases used only in this file 75260684Skaiwtypedef const char* ccstr; 76260684Skaiwtypedef const char* ccstrlist; // represents string arguments which accumulate 77260684Skaiw 78260684Skaiwenum FlagValueOrigin { 79260684Skaiw DEFAULT = 0, 80260684Skaiw COMMAND_LINE = 1, 81260684Skaiw ENVIRON_VAR = 2, 82260684Skaiw CONFIG_FILE = 3, 83260684Skaiw MANAGEMENT = 4, 84260684Skaiw ERGONOMIC = 5, 85260684Skaiw ATTACH_ON_DEMAND = 6, 86260684Skaiw INTERNAL = 99 87260684Skaiw}; 88260684Skaiw 89260684Skaiwstruct Flag { 90260684Skaiw const char *type; 91260684Skaiw const char *name; 92260684Skaiw void* addr; 93260684Skaiw const char *kind; 94260684Skaiw FlagValueOrigin origin; 95260684Skaiw 96260684Skaiw // points to all Flags static array 97260684Skaiw static Flag *flags; 98260684Skaiw 99260684Skaiw // number of flags 100260684Skaiw static size_t numFlags; 101260684Skaiw 102260684Skaiw static Flag* find_flag(char* name, size_t length); 103260684Skaiw 104260684Skaiw bool is_bool() const { return strcmp(type, "bool") == 0; } 105260684Skaiw bool get_bool() const { return *((bool*) addr); } 106260684Skaiw void set_bool(bool value) { *((bool*) addr) = value; } 107260684Skaiw 108260684Skaiw bool is_intx() const { return strcmp(type, "intx") == 0; } 109260684Skaiw intx get_intx() const { return *((intx*) addr); } 110260684Skaiw void set_intx(intx value) { *((intx*) addr) = value; } 111260684Skaiw 112260684Skaiw bool is_uintx() const { return strcmp(type, "uintx") == 0; } 113260684Skaiw uintx get_uintx() const { return *((uintx*) addr); } 114260684Skaiw void set_uintx(uintx value) { *((uintx*) addr) = value; } 115260684Skaiw 116260684Skaiw bool is_double() const { return strcmp(type, "double") == 0; } 117260684Skaiw double get_double() const { return *((double*) addr); } 118260684Skaiw void set_double(double value) { *((double*) addr) = value; } 119260684Skaiw 120260684Skaiw bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } 121260684Skaiw bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } 122260684Skaiw ccstr get_ccstr() const { return *((ccstr*) addr); } 123260684Skaiw void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } 124260684Skaiw 125260684Skaiw bool is_unlocker() const; 126260684Skaiw bool is_unlocked() const; 127260684Skaiw bool is_writeable() const; 128260684Skaiw bool is_external() const; 129260684Skaiw 130260684Skaiw void print_on(outputStream* st); 131260684Skaiw void print_as_flag(outputStream* st); 132260684Skaiw}; 133260684Skaiw 134260684Skaiw// debug flags control various aspects of the VM and are global accessible 135260684Skaiw 136260684Skaiw// use FlagSetting to temporarily change some debug flag 137260684Skaiw// e.g. FlagSetting fs(DebugThisAndThat, true); 138260684Skaiw// restored to previous value upon leaving scope 139260684Skaiwclass FlagSetting { 140260684Skaiw bool val; 141260684Skaiw bool* flag; 142260684Skaiw public: 143260684Skaiw FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } 144260684Skaiw ~FlagSetting() { *flag = val; } 145260684Skaiw}; 146260684Skaiw 147260684Skaiw 148260684Skaiwclass CounterSetting { 149260684Skaiw intx* counter; 150260684Skaiw public: 151260684Skaiw CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 152260684Skaiw ~CounterSetting() { (*counter)--; } 153260684Skaiw}; 154260684Skaiw 155260684Skaiw 156260684Skaiwclass IntFlagSetting { 157260684Skaiw intx val; 158260684Skaiw intx* flag; 159260684Skaiw public: 160260684Skaiw IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } 161260684Skaiw ~IntFlagSetting() { *flag = val; } 162260684Skaiw}; 163260684Skaiw 164260684Skaiw 165260684Skaiwclass DoubleFlagSetting { 166260684Skaiw double val; 167260684Skaiw double* flag; 168260684Skaiw public: 169260684Skaiw DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } 170260684Skaiw ~DoubleFlagSetting() { *flag = val; } 171260684Skaiw}; 172260684Skaiw 173260684Skaiw 174260684Skaiwclass CommandLineFlags { 175260684Skaiw public: 176260684Skaiw static bool boolAt(char* name, size_t len, bool* value); 177260684Skaiw static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } 178260684Skaiw static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); 179260684Skaiw static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } 180260684Skaiw 181260684Skaiw static bool intxAt(char* name, size_t len, intx* value); 182260684Skaiw static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } 183260684Skaiw static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); 184260684Skaiw static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } 185260684Skaiw 186260684Skaiw static bool uintxAt(char* name, size_t len, uintx* value); 187260684Skaiw static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } 188260684Skaiw static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); 189260684Skaiw static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } 190260684Skaiw 191260684Skaiw static bool doubleAt(char* name, size_t len, double* value); 192260684Skaiw static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } 193260684Skaiw static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); 194260684Skaiw static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } 195260684Skaiw 196260684Skaiw static bool ccstrAt(char* name, size_t len, ccstr* value); 197260684Skaiw static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } 198260684Skaiw static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); 199260684Skaiw static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } 200260684Skaiw 201260684Skaiw // Returns false if name is not a command line flag. 202260684Skaiw static bool wasSetOnCmdline(const char* name, bool* value); 203260684Skaiw static void printSetFlags(); 204260684Skaiw 205260684Skaiw static void printFlags() PRODUCT_RETURN; 206260684Skaiw 207260684Skaiw static void verify() PRODUCT_RETURN; 208260684Skaiw}; 209260684Skaiw 210260684Skaiw// use this for flags that are true by default in the debug version but 211260684Skaiw// false in the optimized version, and vice versa 212260684Skaiw#ifdef ASSERT 213260684Skaiw#define trueInDebug true 214260684Skaiw#define falseInDebug false 215260684Skaiw#else 216260684Skaiw#define trueInDebug false 217260684Skaiw#define falseInDebug true 218260684Skaiw#endif 219260684Skaiw 220260684Skaiw// use this for flags that are true per default in the product build 221260684Skaiw// but false in development builds, and vice versa 222260684Skaiw#ifdef PRODUCT 223260684Skaiw#define trueInProduct true 224260684Skaiw#define falseInProduct false 225260684Skaiw#else 226260684Skaiw#define trueInProduct false 227260684Skaiw#define falseInProduct true 228260684Skaiw#endif 229260684Skaiw 230260684Skaiw// use this for flags that are true per default in the tiered build 231260684Skaiw// but false in non-tiered builds, and vice versa 232260684Skaiw#ifdef TIERED 233260684Skaiw#define trueInTiered true 234260684Skaiw#define falseInTiered false 235260684Skaiw#else 236260684Skaiw#define trueInTiered false 237260684Skaiw#define falseInTiered true 238260684Skaiw#endif 239260684Skaiw 240260684Skaiw// develop flags are settable / visible only during development and are constant in the PRODUCT version 241260684Skaiw// product flags are always settable / visible 242260684Skaiw// notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 243260684Skaiw 244260684Skaiw// A flag must be declared with one of the following types: 245260684Skaiw// bool, intx, uintx, ccstr. 246260684Skaiw// The type "ccstr" is an alias for "const char*" and is used 247260684Skaiw// only in this file, because the macrology requires single-token type names. 248260684Skaiw 249260684Skaiw// Note: Diagnostic options not meant for VM tuning or for product modes. 250260684Skaiw// They are to be used for VM quality assurance or field diagnosis 251260684Skaiw// of VM bugs. They are hidden so that users will not be encouraged to 252260684Skaiw// try them as if they were VM ordinary execution options. However, they 253276371Semaste// are available in the product version of the VM. Under instruction 254276371Semaste// from support engineers, VM customers can turn them on to collect 255276371Semaste// diagnostic information about VM problems. To use a VM diagnostic 256276371Semaste// option, you must first specify +UnlockDiagnosticVMOptions. 257276371Semaste// (This master switch also affects the behavior of -Xprintflags.) 258276371Semaste// 259276371Semaste// experimental flags are in support of features that are not 260276371Semaste// part of the officially supported product, but are available 261276371Semaste// for experimenting with. They could, for example, be performance 262276371Semaste// features that may not have undergone full or rigorous QA, but which may 263276371Semaste// help performance in some cases and released for experimentation 264276371Semaste// by the community of users and developers. This flag also allows one to 265317623Semaste// be able to build a fully supported product that nonetheless also 266317623Semaste// ships with some unsupported, lightly tested, experimental features. 267317623Semaste// Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 268317623Semaste// UnlockExperimentalVMOptions flag, which allows the control and 269317623Semaste// modification of the experimental flags. 270317623Semaste// 271317623Semaste// manageable flags are writeable external product flags. 272317623Semaste// They are dynamically writeable through the JDK management interface 273317623Semaste// (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 274317623Semaste// These flags are external exported interface (see CCC). The list of 275317623Semaste// manageable flags can be queried programmatically through the management 276317623Semaste// interface. 277317623Semaste// 278317623Semaste// A flag can be made as "manageable" only if 279317623Semaste// - the flag is defined in a CCC as an external exported interface. 280317623Semaste// - the VM implementation supports dynamic setting of the flag. 281317623Semaste// This implies that the VM must *always* query the flag variable 282317623Semaste// and not reuse state related to the flag state at any given time. 283317623Semaste// - you want the flag to be queried programmatically by the customers. 284317623Semaste// 285317623Semaste// product_rw flags are writeable internal product flags. 286317623Semaste// They are like "manageable" flags but for internal/private use. 287317623Semaste// The list of product_rw flags are internal/private flags which 288317623Semaste// may be changed/removed in a future release. It can be set 289317623Semaste// through the management interface to get/set value 290317623Semaste// when the name of flag is supplied. 291317623Semaste// 292317623Semaste// A flag can be made as "product_rw" only if 293317623Semaste// - the VM implementation supports dynamic setting of the flag. 294317623Semaste// This implies that the VM must *always* query the flag variable 295317623Semaste// and not reuse state related to the flag state at any given time. 296317623Semaste// 297317623Semaste// Note that when there is a need to support develop flags to be writeable, 298317623Semaste// it can be done in the same way as product_rw. 299276371Semaste 300276371Semaste#define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ 301276371Semaste \ 302276371Semaste lp64_product(bool, UseCompressedOops, false, \ 303276371Semaste "Use 32-bit object references in 64-bit VM. " \ 304276371Semaste "lp64_product means flag is always constant in 32 bit VM") \ 305276371Semaste \ 306276371Semaste notproduct(bool, CheckCompressedOops, true, \ 307276371Semaste "generate checks in encoding/decoding code in debug VM") \ 308276371Semaste \ 309276371Semaste product_pd(uintx, HeapBaseMinAddress, \ 310276371Semaste "OS specific low limit for heap base address") \ 311276371Semaste \ 312276371Semaste diagnostic(bool, PrintCompressedOopsMode, false, \ 313276371Semaste "Print compressed oops base address and encoding mode") \ 314276371Semaste \ 315276371Semaste /* UseMembar is theoretically a temp flag used for memory barrier \ 316276371Semaste * removal testing. It was supposed to be removed before FCS but has \ 317276371Semaste * been re-added (see 6401008) */ \ 318276371Semaste product(bool, UseMembar, false, \ 319276371Semaste "(Unstable) Issues membars on thread state transitions") \ 320276371Semaste \ 321276371Semaste product(bool, PrintCommandLineFlags, false, \ 322276371Semaste "Prints flags that appeared on the command line") \ 323276371Semaste \ 324276371Semaste diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 325276371Semaste "Enable normal processing of flags relating to field diagnostics")\ 326276371Semaste \ 327276371Semaste experimental(bool, UnlockExperimentalVMOptions, false, \ 328276371Semaste "Enable normal processing of flags relating to experimental features")\ 329276371Semaste \ 330276371Semaste product(bool, JavaMonitorsInStackTrace, true, \ 331276371Semaste "Print info. about Java monitor locks when the stacks are dumped")\ 332276371Semaste \ 333276371Semaste product_pd(bool, UseLargePages, \ 334276371Semaste "Use large page memory") \ 335306372Smarkj \ 336306372Smarkj product_pd(bool, UseLargePagesIndividualAllocation, \ 337306372Smarkj "Allocate large pages individually for better affinity") \ 338306372Smarkj \ 339306372Smarkj develop(bool, LargePagesIndividualAllocationInjectError, false, \ 340306372Smarkj "Fail large pages individual allocation") \ 341306372Smarkj \ 342306372Smarkj develop(bool, TracePageSizes, false, \ 343306372Smarkj "Trace page size selection and usage.") \ 344306372Smarkj \ 345306372Smarkj product(bool, UseNUMA, false, \ 346306372Smarkj "Use NUMA if available") \ 347306372Smarkj \ 348306372Smarkj product(bool, ForceNUMA, false, \ 349306372Smarkj "Force NUMA optimizations on single-node/UMA systems") \ 350306372Smarkj \ 351306372Smarkj product(intx, NUMAChunkResizeWeight, 20, \ 352306372Smarkj "Percentage (0-100) used to weight the current sample when " \ 353306372Smarkj "computing exponentially decaying average for " \ 354306372Smarkj "AdaptiveNUMAChunkSizing") \ 355306372Smarkj \ 356306372Smarkj product(intx, NUMASpaceResizeRate, 1*G, \ 357306372Smarkj "Do not reallocate more that this amount per collection") \ 358306372Smarkj \ 359306372Smarkj product(bool, UseAdaptiveNUMAChunkSizing, true, \ 360306372Smarkj "Enable adaptive chunk sizing for NUMA") \ 361260684Skaiw \ 362260684Skaiw product(bool, NUMAStats, false, \ 363260684Skaiw "Print NUMA stats in detailed heap information") \ 364260684Skaiw \ 365260684Skaiw product(intx, NUMAPageScanRate, 256, \ 366260684Skaiw "Maximum number of pages to include in the page scan procedure") \ 367260684Skaiw \ 368260684Skaiw product_pd(bool, NeedsDeoptSuspend, \ 369260684Skaiw "True for register window machines (sparc/ia64)") \ 370260684Skaiw \ 371260684Skaiw product(intx, UseSSE, 99, \ 372260684Skaiw "Highest supported SSE instructions set on x86/x64") \ 373260684Skaiw \ 374260684Skaiw product(uintx, LargePageSizeInBytes, 0, \ 375260684Skaiw "Large page size (0 to let VM choose the page size") \ 376260684Skaiw \ 377260684Skaiw product(uintx, LargePageHeapSizeThreshold, 128*M, \ 378260684Skaiw "Use large pages if max heap is at least this big") \ 379260684Skaiw \ 380260684Skaiw product(bool, ForceTimeHighResolution, false, \ 381260684Skaiw "Using high time resolution(For Win32 only)") \ 382260684Skaiw \ 383260684Skaiw develop(bool, TraceItables, false, \ 384260684Skaiw "Trace initialization and use of itables") \ 385260684Skaiw \ 386260684Skaiw develop(bool, TracePcPatching, false, \ 387260684Skaiw "Trace usage of frame::patch_pc") \ 388260684Skaiw \ 389260684Skaiw develop(bool, TraceJumps, false, \ 390260684Skaiw "Trace assembly jumps in thread ring buffer") \ 391260684Skaiw \ 392260684Skaiw develop(bool, TraceRelocator, false, \ 393260684Skaiw "Trace the bytecode relocator") \ 394260684Skaiw \ 395260684Skaiw develop(bool, TraceLongCompiles, false, \ 396260684Skaiw "Print out every time compilation is longer than " \ 397260684Skaiw "a given threashold") \ 398260684Skaiw \ 399260684Skaiw develop(bool, SafepointALot, false, \ 400260684Skaiw "Generates a lot of safepoints. Works with " \ 401260684Skaiw "GuaranteedSafepointInterval") \ 402260684Skaiw \ 403260684Skaiw product_pd(bool, BackgroundCompilation, \ 404260684Skaiw "A thread requesting compilation is not blocked during " \ 405260684Skaiw "compilation") \ 406260684Skaiw \ 407260684Skaiw product(bool, PrintVMQWaitTime, false, \ 408260684Skaiw "Prints out the waiting time in VM operation queue") \ 409260684Skaiw \ 410260684Skaiw develop(bool, BailoutToInterpreterForThrows, false, \ 411260684Skaiw "Compiled methods which throws/catches exceptions will be " \ 412260684Skaiw "deopt and intp.") \ 413260684Skaiw \ 414260684Skaiw develop(bool, NoYieldsInMicrolock, false, \ 415260684Skaiw "Disable yields in microlock") \ 416260684Skaiw \ 417260684Skaiw develop(bool, TraceOopMapGeneration, false, \ 418260684Skaiw "Shows oopmap generation") \ 419260684Skaiw \ 420260684Skaiw product(bool, MethodFlushing, true, \ 421260684Skaiw "Reclamation of zombie and not-entrant methods") \ 422260684Skaiw \ 423260684Skaiw develop(bool, VerifyStack, false, \ 424260684Skaiw "Verify stack of each thread when it is entering a runtime call") \ 425260684Skaiw \ 426260684Skaiw develop(bool, ForceUnreachable, false, \ 427260684Skaiw "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ 428260684Skaiw \ 429260684Skaiw notproduct(bool, StressDerivedPointers, false, \ 430260684Skaiw "Force scavenge when a derived pointers is detected on stack " \ 431260684Skaiw "after rtm call") \ 432260684Skaiw \ 433260684Skaiw develop(bool, TraceDerivedPointers, false, \ 434260684Skaiw "Trace traversal of derived pointers on stack") \ 435260684Skaiw \ 436260684Skaiw notproduct(bool, TraceCodeBlobStacks, false, \ 437260684Skaiw "Trace stack-walk of codeblobs") \ 438260684Skaiw \ 439260684Skaiw product(bool, PrintJNIResolving, false, \ 440260684Skaiw "Used to implement -v:jni") \ 441260684Skaiw \ 442260684Skaiw notproduct(bool, PrintRewrites, false, \ 443260684Skaiw "Print methods that are being rewritten") \ 444260684Skaiw \ 445260684Skaiw product(bool, UseInlineCaches, true, \ 446260684Skaiw "Use Inline Caches for virtual calls ") \ 447260684Skaiw \ 448260684Skaiw develop(bool, InlineArrayCopy, true, \ 449260684Skaiw "inline arraycopy native that is known to be part of " \ 450260684Skaiw "base library DLL") \ 451260684Skaiw \ 452260684Skaiw develop(bool, InlineObjectHash, true, \ 453260684Skaiw "inline Object::hashCode() native that is known to be part " \ 454260684Skaiw "of base library DLL") \ 455260684Skaiw \ 456260684Skaiw develop(bool, InlineObjectCopy, true, \ 457260684Skaiw "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ 458260684Skaiw \ 459260684Skaiw develop(bool, InlineNatives, true, \ 460260684Skaiw "inline natives that are known to be part of base library DLL") \ 461260684Skaiw \ 462260684Skaiw develop(bool, InlineMathNatives, true, \ 463260684Skaiw "inline SinD, CosD, etc.") \ 464260684Skaiw \ 465260684Skaiw develop(bool, InlineClassNatives, true, \ 466260684Skaiw "inline Class.isInstance, etc") \ 467260684Skaiw \ 468260684Skaiw develop(bool, InlineAtomicLong, true, \ 469260684Skaiw "inline sun.misc.AtomicLong") \ 470260684Skaiw \ 471260684Skaiw develop(bool, InlineThreadNatives, true, \ 472260684Skaiw "inline Thread.currentThread, etc") \ 473260684Skaiw \ 474260684Skaiw develop(bool, InlineReflectionGetCallerClass, true, \ 475260684Skaiw "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ 476260684Skaiw "of base library DLL") \ 477260684Skaiw \ 478260684Skaiw develop(bool, InlineUnsafeOps, true, \ 479260684Skaiw "inline memory ops (native methods) from sun.misc.Unsafe") \ 480260684Skaiw \ 481260684Skaiw develop(bool, ConvertCmpD2CmpF, true, \ 482260684Skaiw "Convert cmpD to cmpF when one input is constant in float range") \ 483260684Skaiw \ 484260684Skaiw develop(bool, ConvertFloat2IntClipping, true, \ 485260684Skaiw "Convert float2int clipping idiom to integer clipping") \ 486260684Skaiw \ 487260684Skaiw develop(bool, SpecialStringCompareTo, true, \ 488260684Skaiw "special version of string compareTo") \ 489260684Skaiw \ 490260684Skaiw develop(bool, SpecialStringIndexOf, true, \ 491260684Skaiw "special version of string indexOf") \ 492260684Skaiw \ 493260684Skaiw product(bool, SpecialArraysEquals, false, \ 494260684Skaiw "special version of Arrays.equals(char[],char[])") \ 495260684Skaiw \ 496260684Skaiw develop(bool, TraceCallFixup, false, \ 497260684Skaiw "traces all call fixups") \ 498260684Skaiw \ 499260684Skaiw develop(bool, DeoptimizeALot, false, \ 500260684Skaiw "deoptimize at every exit from the runtime system") \ 501260684Skaiw \ 502260684Skaiw notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 503260684Skaiw "a comma separated list of bcis to deoptimize at") \ 504260684Skaiw \ 505260684Skaiw product(bool, DeoptimizeRandom, false, \ 506260684Skaiw "deoptimize random frames on random exit from the runtime system")\ 507260684Skaiw \ 508260684Skaiw notproduct(bool, ZombieALot, false, \ 509260684Skaiw "creates zombies (non-entrant) at exit from the runt. system") \ 510260684Skaiw \ 511260684Skaiw notproduct(bool, WalkStackALot, false, \ 512260684Skaiw "trace stack (no print) at every exit from the runtime system") \ 513260684Skaiw \ 514260684Skaiw develop(bool, Debugging, false, \ 515260684Skaiw "set when executing debug methods in debug.ccp " \ 516260684Skaiw "(to prevent triggering assertions)") \ 517260684Skaiw \ 518260684Skaiw notproduct(bool, StrictSafepointChecks, trueInDebug, \ 519260684Skaiw "Enable strict checks that safepoints cannot happen for threads " \ 520260684Skaiw "that used No_Safepoint_Verifier") \ 521260684Skaiw \ 522260684Skaiw notproduct(bool, VerifyLastFrame, false, \ 523260684Skaiw "Verify oops on last frame on entry to VM") \ 524260684Skaiw \ 525260684Skaiw develop(bool, TraceHandleAllocation, false, \ 526260684Skaiw "Prints out warnings when suspicious many handles are allocated") \ 527260684Skaiw \ 528260684Skaiw product(bool, UseCompilerSafepoints, true, \ 529260684Skaiw "Stop at safepoints in compiled code") \ 530260684Skaiw \ 531260684Skaiw product(bool, UseSplitVerifier, true, \ 532260684Skaiw "use split verifier with StackMapTable attributes") \ 533260684Skaiw \ 534260684Skaiw product(bool, FailOverToOldVerifier, true, \ 535260684Skaiw "fail over to old verifier when split verifier fails") \ 536260684Skaiw \ 537260684Skaiw develop(bool, ShowSafepointMsgs, false, \ 538260684Skaiw "Show msg. about safepoint synch.") \ 539260684Skaiw \ 540260684Skaiw product(bool, SafepointTimeout, false, \ 541260684Skaiw "Time out and warn or fail after SafepointTimeoutDelay " \ 542260684Skaiw "milliseconds if failed to reach safepoint") \ 543260684Skaiw \ 544260684Skaiw develop(bool, DieOnSafepointTimeout, false, \ 545260684Skaiw "Die upon failure to reach safepoint (see SafepointTimeout)") \ 546260684Skaiw \ 547260684Skaiw /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 548260684Skaiw /* typically, at most a few retries are needed */ \ 549260684Skaiw product(intx, SuspendRetryCount, 50, \ 550260684Skaiw "Maximum retry count for an external suspend request") \ 551260684Skaiw \ 552260684Skaiw product(intx, SuspendRetryDelay, 5, \ 553260684Skaiw "Milliseconds to delay per retry (* current_retry_count)") \ 554260684Skaiw \ 555260684Skaiw product(bool, AssertOnSuspendWaitFailure, false, \ 556260684Skaiw "Assert/Guarantee on external suspend wait failure") \ 557260684Skaiw \ 558260684Skaiw product(bool, TraceSuspendWaitFailures, false, \ 559260684Skaiw "Trace external suspend wait failures") \ 560260684Skaiw \ 561260684Skaiw product(bool, MaxFDLimit, true, \ 562260684Skaiw "Bump the number of file descriptors to max in solaris.") \ 563260684Skaiw \ 564260684Skaiw notproduct(bool, LogEvents, trueInDebug, \ 565260684Skaiw "Enable Event log") \ 566260684Skaiw \ 567260684Skaiw product(bool, BytecodeVerificationRemote, true, \ 568260684Skaiw "Enables the Java bytecode verifier for remote classes") \ 569260684Skaiw \ 570260684Skaiw product(bool, BytecodeVerificationLocal, false, \ 571260684Skaiw "Enables the Java bytecode verifier for local classes") \ 572260684Skaiw \ 573260684Skaiw develop(bool, ForceFloatExceptions, trueInDebug, \ 574260684Skaiw "Force exceptions on FP stack under/overflow") \ 575260684Skaiw \ 576260684Skaiw develop(bool, SoftMatchFailure, trueInProduct, \ 577260684Skaiw "If the DFA fails to match a node, print a message and bail out") \ 578260684Skaiw \ 579260684Skaiw develop(bool, VerifyStackAtCalls, false, \ 580260684Skaiw "Verify that the stack pointer is unchanged after calls") \ 581260684Skaiw \ 582260684Skaiw develop(bool, TraceJavaAssertions, false, \ 583260684Skaiw "Trace java language assertions") \ 584260684Skaiw \ 585260684Skaiw notproduct(bool, CheckAssertionStatusDirectives, false, \ 586260684Skaiw "temporary - see javaClasses.cpp") \ 587260684Skaiw \ 588260684Skaiw notproduct(bool, PrintMallocFree, false, \ 589260684Skaiw "Trace calls to C heap malloc/free allocation") \ 590260684Skaiw \ 591260684Skaiw notproduct(bool, PrintOopAddress, false, \ 592260684Skaiw "Always print the location of the oop") \ 593260684Skaiw \ 594260684Skaiw notproduct(bool, VerifyCodeCacheOften, false, \ 595260684Skaiw "Verify compiled-code cache often") \ 596260684Skaiw \ 597260684Skaiw develop(bool, ZapDeadCompiledLocals, false, \ 598260684Skaiw "Zap dead locals in compiler frames") \ 599260684Skaiw \ 600260684Skaiw notproduct(bool, ZapDeadLocalsOld, false, \ 601260684Skaiw "Zap dead locals (old version, zaps all frames when " \ 602260684Skaiw "entering the VM") \ 603260684Skaiw \ 604260684Skaiw notproduct(bool, CheckOopishValues, false, \ 605260684Skaiw "Warn if value contains oop ( requires ZapDeadLocals)") \ 606260684Skaiw \ 607260684Skaiw develop(bool, UseMallocOnly, false, \ 608260684Skaiw "use only malloc/free for allocation (no resource area/arena)") \ 609260684Skaiw \ 610260684Skaiw develop(bool, PrintMalloc, false, \ 611260684Skaiw "print all malloc/free calls") \ 612260684Skaiw \ 613260684Skaiw develop(bool, ZapResourceArea, trueInDebug, \ 614260684Skaiw "Zap freed resource/arena space with 0xABABABAB") \ 615260684Skaiw \ 616260684Skaiw notproduct(bool, ZapVMHandleArea, trueInDebug, \ 617260684Skaiw "Zap freed VM handle space with 0xBCBCBCBC") \ 618260684Skaiw \ 619260684Skaiw develop(bool, ZapJNIHandleArea, trueInDebug, \ 620260684Skaiw "Zap freed JNI handle space with 0xFEFEFEFE") \ 621260684Skaiw \ 622260684Skaiw develop(bool, ZapUnusedHeapArea, trueInDebug, \ 623260684Skaiw "Zap unused heap space with 0xBAADBABE") \ 624260684Skaiw \ 625260684Skaiw develop(bool, TraceZapUnusedHeapArea, false, \ 626260684Skaiw "Trace zapping of unused heap space") \ 627260684Skaiw \ 628260684Skaiw develop(bool, CheckZapUnusedHeapArea, false, \ 629260684Skaiw "Check zapping of unused heap space") \ 630260684Skaiw \ 631260684Skaiw develop(bool, ZapFillerObjects, trueInDebug, \ 632260684Skaiw "Zap filler objects with 0xDEAFBABE") \ 633260684Skaiw \ 634260684Skaiw develop(bool, PrintVMMessages, true, \ 635260684Skaiw "Print vm messages on console") \ 636260684Skaiw \ 637260684Skaiw product(bool, PrintGCApplicationConcurrentTime, false, \ 638260684Skaiw "Print the time the application has been running") \ 639260684Skaiw \ 640260684Skaiw product(bool, PrintGCApplicationStoppedTime, false, \ 641260684Skaiw "Print the time the application has been stopped") \ 642260684Skaiw \ 643260684Skaiw develop(bool, Verbose, false, \ 644260684Skaiw "Prints additional debugging information from other modes") \ 645260684Skaiw \ 646260684Skaiw develop(bool, PrintMiscellaneous, false, \ 647260684Skaiw "Prints uncategorized debugging information (requires +Verbose)") \ 648260684Skaiw \ 649260684Skaiw develop(bool, WizardMode, false, \ 650260684Skaiw "Prints much more debugging information") \ 651260684Skaiw \ 652260684Skaiw product(bool, ShowMessageBoxOnError, false, \ 653260684Skaiw "Keep process alive on VM fatal error") \ 654260684Skaiw \ 655260684Skaiw product_pd(bool, UseOSErrorReporting, \ 656260684Skaiw "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 657260684Skaiw \ 658260684Skaiw product(bool, SuppressFatalErrorMessage, false, \ 659260684Skaiw "Do NO Fatal Error report [Avoid deadlock]") \ 660260684Skaiw \ 661260684Skaiw product(ccstrlist, OnError, "", \ 662260684Skaiw "Run user-defined commands on fatal error; see VMError.cpp " \ 663260684Skaiw "for examples") \ 664260684Skaiw \ 665260684Skaiw product(ccstrlist, OnOutOfMemoryError, "", \ 666260684Skaiw "Run user-defined commands on first java.lang.OutOfMemoryError") \ 667260684Skaiw \ 668260684Skaiw manageable(bool, HeapDumpBeforeFullGC, false, \ 669260684Skaiw "Dump heap to file before any major stop-world GC") \ 670260684Skaiw \ 671260684Skaiw manageable(bool, HeapDumpAfterFullGC, false, \ 672260684Skaiw "Dump heap to file after any major stop-world GC") \ 673260684Skaiw \ 674260684Skaiw manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 675260684Skaiw "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 676260684Skaiw \ 677260684Skaiw manageable(ccstr, HeapDumpPath, NULL, \ 678260684Skaiw "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ 679260684Skaiw "directory) of the dump file (defaults to java_pid<pid>.hprof" \ 680260684Skaiw "in the working directory)") \ 681260684Skaiw \ 682260684Skaiw develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ 683260684Skaiw "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ 684260684Skaiw "when the heap usage is larger than this") \ 685260684Skaiw \ 686260684Skaiw develop(uintx, HeapDumpSegmentSize, 1*G, \ 687260684Skaiw "Approximate segment size when generating a segmented heap dump") \ 688260684Skaiw \ 689260684Skaiw develop(bool, BreakAtWarning, false, \ 690260684Skaiw "Execute breakpoint upon encountering VM warning") \ 691260684Skaiw \ 692260684Skaiw product_pd(bool, UseVectoredExceptions, \ 693260684Skaiw "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ 694260684Skaiw \ 695260684Skaiw develop(bool, TraceVMOperation, false, \ 696260684Skaiw "Trace vm operations") \ 697260684Skaiw \ 698260684Skaiw develop(bool, UseFakeTimers, false, \ 699260684Skaiw "Tells whether the VM should use system time or a fake timer") \ 700260684Skaiw \ 701260684Skaiw diagnostic(bool, LogCompilation, false, \ 702260684Skaiw "Log compilation activity in detail to hotspot.log or LogFile") \ 703260684Skaiw \ 704260684Skaiw product(bool, PrintCompilation, false, \ 705260684Skaiw "Print compilations") \ 706260684Skaiw \ 707260684Skaiw diagnostic(bool, TraceNMethodInstalls, false, \ 708260684Skaiw "Trace nmethod intallation") \ 709260684Skaiw \ 710260684Skaiw diagnostic(bool, TraceOSRBreakpoint, false, \ 711260684Skaiw "Trace OSR Breakpoint ") \ 712260684Skaiw \ 713260684Skaiw diagnostic(bool, TraceCompileTriggered, false, \ 714260684Skaiw "Trace compile triggered") \ 715260684Skaiw \ 716260684Skaiw diagnostic(bool, TraceTriggers, false, \ 717260684Skaiw "Trace triggers") \ 718260684Skaiw \ 719260684Skaiw product(bool, AlwaysRestoreFPU, false, \ 720260684Skaiw "Restore the FPU control word after every JNI call (expensive)") \ 721260684Skaiw \ 722260684Skaiw notproduct(bool, PrintCompilation2, false, \ 723260684Skaiw "Print additional statistics per compilation") \ 724260684Skaiw \ 725260684Skaiw diagnostic(bool, PrintAdapterHandlers, false, \ 726260684Skaiw "Print code generated for i2c/c2i adapters") \ 727260684Skaiw \ 728260684Skaiw diagnostic(bool, PrintAssembly, false, \ 729260684Skaiw "Print assembly code (using external disassembler.so)") \ 730260684Skaiw \ 731260684Skaiw diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 732260684Skaiw "Options string passed to disassembler.so") \ 733260684Skaiw \ 734260684Skaiw diagnostic(bool, PrintNMethods, false, \ 735260684Skaiw "Print assembly code for nmethods when generated") \ 736260684Skaiw \ 737260684Skaiw diagnostic(bool, PrintNativeNMethods, false, \ 738260684Skaiw "Print assembly code for native nmethods when generated") \ 739260684Skaiw \ 740260684Skaiw develop(bool, PrintDebugInfo, false, \ 741260684Skaiw "Print debug information for all nmethods when generated") \ 742260684Skaiw \ 743260684Skaiw develop(bool, PrintRelocations, false, \ 744260684Skaiw "Print relocation information for all nmethods when generated") \ 745260684Skaiw \ 746260684Skaiw develop(bool, PrintDependencies, false, \ 747260684Skaiw "Print dependency information for all nmethods when generated") \ 748260684Skaiw \ 749260684Skaiw develop(bool, PrintExceptionHandlers, false, \ 750260684Skaiw "Print exception handler tables for all nmethods when generated") \ 751260684Skaiw \ 752260684Skaiw develop(bool, InterceptOSException, false, \ 753260684Skaiw "Starts debugger when an implicit OS (e.g., NULL) " \ 754260684Skaiw "exception happens") \ 755260684Skaiw \ 756260684Skaiw notproduct(bool, PrintCodeCache, false, \ 757260684Skaiw "Print the compiled_code cache when exiting") \ 758260684Skaiw \ 759260684Skaiw develop(bool, PrintCodeCache2, false, \ 760260684Skaiw "Print detailed info on the compiled_code cache when exiting") \ 761260684Skaiw \ 762260684Skaiw diagnostic(bool, PrintStubCode, false, \ 763260684Skaiw "Print generated stub code") \ 764260684Skaiw \ 765260684Skaiw product(bool, StackTraceInThrowable, true, \ 766260684Skaiw "Collect backtrace in throwable when exception happens") \ 767260684Skaiw \ 768260684Skaiw product(bool, OmitStackTraceInFastThrow, true, \ 769260684Skaiw "Omit backtraces for some 'hot' exceptions in optimized code") \ 770260684Skaiw \ 771260684Skaiw product(bool, ProfilerPrintByteCodeStatistics, false, \ 772260684Skaiw "Prints byte code statictics when dumping profiler output") \ 773260684Skaiw \ 774260684Skaiw product(bool, ProfilerRecordPC, false, \ 775260684Skaiw "Collects tick for each 16 byte interval of compiled code") \ 776260684Skaiw \ 777260684Skaiw product(bool, ProfileVM, false, \ 778260684Skaiw "Profiles ticks that fall within VM (either in the VM Thread " \ 779260684Skaiw "or VM code called through stubs)") \ 780260684Skaiw \ 781260684Skaiw product(bool, ProfileIntervals, false, \ 782260684Skaiw "Prints profiles for each interval (see ProfileIntervalsTicks)") \ 783260684Skaiw \ 784260684Skaiw notproduct(bool, ProfilerCheckIntervals, false, \ 785260684Skaiw "Collect and print info on spacing of profiler ticks") \ 786260684Skaiw \ 787260684Skaiw develop(bool, PrintJVMWarnings, false, \ 788260684Skaiw "Prints warnings for unimplemented JVM functions") \ 789260684Skaiw \ 790260684Skaiw notproduct(uintx, WarnOnStalledSpinLock, 0, \ 791260684Skaiw "Prints warnings for stalled SpinLocks") \ 792260684Skaiw \ 793317623Semaste develop(bool, InitializeJavaLangSystem, true, \ 794317623Semaste "Initialize java.lang.System - turn off for individual " \ 795260684Skaiw "method debugging") \ 796260684Skaiw \ 797260684Skaiw develop(bool, InitializeJavaLangString, true, \ 798260684Skaiw "Initialize java.lang.String - turn off for individual " \ 799260684Skaiw "method debugging") \ 800260684Skaiw \ 801260684Skaiw develop(bool, InitializeJavaLangExceptionsErrors, true, \ 802260684Skaiw "Initialize various error and exception classes - turn off for " \ 803260684Skaiw "individual method debugging") \ 804260684Skaiw \ 805260684Skaiw product(bool, RegisterFinalizersAtInit, true, \ 806260684Skaiw "Register finalizable objects at end of Object.<init> or " \ 807260684Skaiw "after allocation.") \ 808260684Skaiw \ 809260684Skaiw develop(bool, RegisterReferences, true, \ 810260684Skaiw "Tells whether the VM should register soft/weak/final/phantom " \ 811260684Skaiw "references") \ 812260684Skaiw \ 813260684Skaiw develop(bool, IgnoreRewrites, false, \ 814260684Skaiw "Supress rewrites of bytecodes in the oopmap generator. " \ 815260684Skaiw "This is unsafe!") \ 816260684Skaiw \ 817260684Skaiw develop(bool, PrintCodeCacheExtension, false, \ 818260684Skaiw "Print extension of code cache") \ 819260684Skaiw \ 820260684Skaiw develop(bool, UsePrivilegedStack, true, \ 821260684Skaiw "Enable the security JVM functions") \ 822260684Skaiw \ 823260684Skaiw develop(bool, IEEEPrecision, true, \ 824260684Skaiw "Enables IEEE precision (for INTEL only)") \ 825260684Skaiw \ 826260684Skaiw develop(bool, ProtectionDomainVerification, true, \ 827260684Skaiw "Verifies protection domain before resolution in system " \ 828260684Skaiw "dictionary") \ 829260684Skaiw \ 830260684Skaiw product(bool, ClassUnloading, true, \ 831260684Skaiw "Do unloading of classes") \ 832260684Skaiw \ 833260684Skaiw diagnostic(bool, LinkWellKnownClasses, false, \ 834260684Skaiw "Resolve a well known class as soon as its name is seen") \ 835260684Skaiw \ 836260684Skaiw develop(bool, DisableStartThread, false, \ 837260684Skaiw "Disable starting of additional Java threads " \ 838260684Skaiw "(for debugging only)") \ 839260684Skaiw \ 840260684Skaiw develop(bool, MemProfiling, false, \ 841260684Skaiw "Write memory usage profiling to log file") \ 842260684Skaiw \ 843260684Skaiw notproduct(bool, PrintSystemDictionaryAtExit, false, \ 844260684Skaiw "Prints the system dictionary at exit") \ 845260684Skaiw \ 846260684Skaiw diagnostic(bool, UnsyncloadClass, false, \ 847260684Skaiw "Unstable: VM calls loadClass unsynchronized. Custom " \ 848260684Skaiw "class loader must call VM synchronized for findClass " \ 849260684Skaiw "and defineClass.") \ 850260684Skaiw \ 851260684Skaiw product(bool, AlwaysLockClassLoader, false, \ 852260684Skaiw "Require the VM to acquire the class loader lock before calling " \ 853260684Skaiw "loadClass() even for class loaders registering " \ 854260684Skaiw "as parallel capable. Default false. ") \ 855260684Skaiw \ 856260684Skaiw product(bool, AllowParallelDefineClass, false, \ 857260684Skaiw "Allow parallel defineClass requests for class loaders " \ 858260684Skaiw "registering as parallel capable. Default false") \ 859260684Skaiw \ 860260684Skaiw product(bool, MustCallLoadClassInternal, false, \ 861260684Skaiw "Call loadClassInternal() rather than loadClass().Default false") \ 862260684Skaiw \ 863260684Skaiw product_pd(bool, DontYieldALot, \ 864260684Skaiw "Throw away obvious excess yield calls (for SOLARIS only)") \ 865260684Skaiw \ 866260684Skaiw product_pd(bool, ConvertSleepToYield, \ 867260684Skaiw "Converts sleep(0) to thread yield " \ 868260684Skaiw "(may be off for SOLARIS to improve GUI)") \ 869260684Skaiw \ 870260684Skaiw product(bool, ConvertYieldToSleep, false, \ 871260684Skaiw "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ 872260684Skaiw "behavior (SOLARIS only)") \ 873260684Skaiw \ 874260684Skaiw product(bool, UseBoundThreads, true, \ 875260684Skaiw "Bind user level threads to kernel threads (for SOLARIS only)") \ 876260684Skaiw \ 877260684Skaiw develop(bool, UseDetachedThreads, true, \ 878260684Skaiw "Use detached threads that are recycled upon termination " \ 879260684Skaiw "(for SOLARIS only)") \ 880260684Skaiw \ 881260684Skaiw product(bool, UseLWPSynchronization, true, \ 882260684Skaiw "Use LWP-based instead of libthread-based synchronization " \ 883260684Skaiw "(SPARC only)") \ 884260684Skaiw \ 885260684Skaiw product(ccstr, SyncKnobs, NULL, \ 886260684Skaiw "(Unstable) Various monitor synchronization tunables") \ 887260684Skaiw \ 888260684Skaiw product(intx, EmitSync, 0, \ 889260684Skaiw "(Unsafe,Unstable) " \ 890260684Skaiw " Controls emission of inline sync fast-path code") \ 891260684Skaiw \ 892260684Skaiw product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ 893260684Skaiw \ 894260684Skaiw product(intx, Atomics, 0, \ 895260684Skaiw "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ 896260684Skaiw \ 897260684Skaiw product(intx, FenceInstruction, 0, \ 898260684Skaiw "(Unsafe,Unstable) Experimental") \ 899260684Skaiw \ 900260684Skaiw product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ 901260684Skaiw \ 902260684Skaiw product(intx, SyncVerbose, 0, "(Unstable)" ) \ 903260684Skaiw \ 904260684Skaiw product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ 905260684Skaiw \ 906260684Skaiw product(intx, hashCode, 0, \ 907260684Skaiw "(Unstable) select hashCode generation algorithm" ) \ 908260684Skaiw \ 909260684Skaiw product(intx, WorkAroundNPTLTimedWaitHang, 1, \ 910260684Skaiw "(Unstable, Linux-specific)" \ 911260684Skaiw " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ 912260684Skaiw \ 913260684Skaiw product(bool, FilterSpuriousWakeups , true, \ 914260684Skaiw "Prevent spurious or premature wakeups from object.wait" \ 915260684Skaiw "(Solaris only)") \ 916260684Skaiw \ 917260684Skaiw product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ 918260684Skaiw product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ 919260684Skaiw product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ 920260684Skaiw \ 921260684Skaiw develop(bool, UsePthreads, false, \ 922260684Skaiw "Use pthread-based instead of libthread-based synchronization " \ 923260684Skaiw "(SPARC only)") \ 924260684Skaiw \ 925260684Skaiw product(bool, AdjustConcurrency, false, \ 926260684Skaiw "call thr_setconcurrency at thread create time to avoid " \ 927260684Skaiw "LWP starvation on MP systems (For Solaris Only)") \ 928260684Skaiw \ 929260684Skaiw develop(bool, UpdateHotSpotCompilerFileOnError, true, \ 930260684Skaiw "Should the system attempt to update the compiler file when " \ 931260684Skaiw "an error occurs?") \ 932260684Skaiw \ 933260684Skaiw product(bool, ReduceSignalUsage, false, \ 934260684Skaiw "Reduce the use of OS signals in Java and/or the VM") \ 935260684Skaiw \ 936260684Skaiw notproduct(bool, ValidateMarkSweep, false, \ 937260684Skaiw "Do extra validation during MarkSweep collection") \ 938260684Skaiw \ 939260684Skaiw notproduct(bool, RecordMarkSweepCompaction, false, \ 940260684Skaiw "Enable GC-to-GC recording and querying of compaction during " \ 941260684Skaiw "MarkSweep") \ 942260684Skaiw \ 943260684Skaiw develop_pd(bool, ShareVtableStubs, \ 944260684Skaiw "Share vtable stubs (smaller code but worse branch prediction") \ 945260684Skaiw \ 946260684Skaiw develop(bool, LoadLineNumberTables, true, \ 947260684Skaiw "Tells whether the class file parser loads line number tables") \ 948260684Skaiw \ 949260684Skaiw develop(bool, LoadLocalVariableTables, true, \ 950260684Skaiw "Tells whether the class file parser loads local variable tables")\ 951260684Skaiw \ 952260684Skaiw develop(bool, LoadLocalVariableTypeTables, true, \ 953260684Skaiw "Tells whether the class file parser loads local variable type tables")\ 954260684Skaiw \ 955260684Skaiw product(bool, AllowUserSignalHandlers, false, \ 956260684Skaiw "Do not complain if the application installs signal handlers " \ 957260684Skaiw "(Solaris & Linux only)") \ 958260684Skaiw \ 959260684Skaiw product(bool, UseSignalChaining, true, \ 960260684Skaiw "Use signal-chaining to invoke signal handlers installed " \ 961260684Skaiw "by the application (Solaris & Linux only)") \ 962260684Skaiw \ 963260684Skaiw product(bool, UseAltSigs, false, \ 964260684Skaiw "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ 965260684Skaiw "internal signals. (Solaris only)") \ 966260684Skaiw \ 967260684Skaiw product(bool, UseSpinning, false, \ 968260684Skaiw "Use spinning in monitor inflation and before entry") \ 969260684Skaiw \ 970260684Skaiw product(bool, PreSpinYield, false, \ 971260684Skaiw "Yield before inner spinning loop") \ 972260684Skaiw \ 973260684Skaiw product(bool, PostSpinYield, true, \ 974260684Skaiw "Yield after inner spinning loop") \ 975260684Skaiw \ 976260684Skaiw product(bool, AllowJNIEnvProxy, false, \ 977260684Skaiw "Allow JNIEnv proxies for jdbx") \ 978260684Skaiw \ 979260684Skaiw product(bool, JNIDetachReleasesMonitors, true, \ 980260684Skaiw "JNI DetachCurrentThread releases monitors owned by thread") \ 981260684Skaiw \ 982260684Skaiw product(bool, RestoreMXCSROnJNICalls, false, \ 983260684Skaiw "Restore MXCSR when returning from JNI calls") \ 984260684Skaiw \ 985260684Skaiw product(bool, CheckJNICalls, false, \ 986260684Skaiw "Verify all arguments to JNI calls") \ 987260684Skaiw \ 988260684Skaiw product(bool, UseFastJNIAccessors, true, \ 989260684Skaiw "Use optimized versions of Get<Primitive>Field") \ 990260684Skaiw \ 991260684Skaiw product(bool, EagerXrunInit, false, \ 992260684Skaiw "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 993260684Skaiw " but not all -Xrun libraries may support the state of the VM at this time") \ 994260684Skaiw \ 995260684Skaiw product(bool, PreserveAllAnnotations, false, \ 996260684Skaiw "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ 997260684Skaiw \ 998260684Skaiw develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 999260684Skaiw "Number of OutOfMemoryErrors preallocated with backtrace") \ 1000260684Skaiw \ 1001260684Skaiw product(bool, LazyBootClassLoader, true, \ 1002260684Skaiw "Enable/disable lazy opening of boot class path entries") \ 1003260684Skaiw \ 1004260684Skaiw diagnostic(bool, UseIncDec, true, \ 1005260684Skaiw "Use INC, DEC instructions on x86") \ 1006260684Skaiw \ 1007260684Skaiw product(bool, UseNewLongLShift, false, \ 1008260684Skaiw "Use optimized bitwise shift left") \ 1009260684Skaiw \ 1010260684Skaiw product(bool, UseStoreImmI16, true, \ 1011260684Skaiw "Use store immediate 16-bits value instruction on x86") \ 1012260684Skaiw \ 1013260684Skaiw product(bool, UseAddressNop, false, \ 1014260684Skaiw "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ 1015260684Skaiw \ 1016260684Skaiw product(bool, UseXmmLoadAndClearUpper, true, \ 1017260684Skaiw "Load low part of XMM register and clear upper part") \ 1018260684Skaiw \ 1019260684Skaiw product(bool, UseXmmRegToRegMoveAll, false, \ 1020260684Skaiw "Copy all XMM register bits when moving value between registers") \ 1021260684Skaiw \ 1022260684Skaiw product(bool, UseXmmI2D, false, \ 1023260684Skaiw "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ 1024260684Skaiw \ 1025260684Skaiw product(bool, UseXmmI2F, false, \ 1026260684Skaiw "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ 1027260684Skaiw \ 1028260684Skaiw product(bool, UseXMMForArrayCopy, false, \ 1029260684Skaiw "Use SSE2 MOVQ instruction for Arraycopy") \ 1030260684Skaiw \ 1031260684Skaiw product(bool, UseUnalignedLoadStores, false, \ 1032260684Skaiw "Use SSE2 MOVDQU instruction for Arraycopy") \ 1033260684Skaiw \ 1034260684Skaiw product(intx, FieldsAllocationStyle, 1, \ 1035260684Skaiw "0 - type based with oops first, 1 - with oops last") \ 1036260684Skaiw \ 1037260684Skaiw product(bool, CompactFields, true, \ 1038260684Skaiw "Allocate nonstatic fields in gaps between previous fields") \ 1039260684Skaiw \ 1040260684Skaiw notproduct(bool, PrintCompactFieldsSavings, false, \ 1041260684Skaiw "Print how many words were saved with CompactFields") \ 1042260684Skaiw \ 1043260684Skaiw product(bool, UseBiasedLocking, true, \ 1044260684Skaiw "Enable biased locking in JVM") \ 1045260684Skaiw \ 1046260684Skaiw product(intx, BiasedLockingStartupDelay, 4000, \ 1047260684Skaiw "Number of milliseconds to wait before enabling biased locking") \ 1048260684Skaiw \ 1049260684Skaiw diagnostic(bool, PrintBiasedLockingStatistics, false, \ 1050260684Skaiw "Print statistics of biased locking in JVM") \ 1051260684Skaiw \ 1052260684Skaiw product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 1053260684Skaiw "Threshold of number of revocations per type to try to " \ 1054260684Skaiw "rebias all objects in the heap of that type") \ 1055260684Skaiw \ 1056260684Skaiw product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 1057260684Skaiw "Threshold of number of revocations per type to permanently " \ 1058260684Skaiw "revoke biases of all objects in the heap of that type") \ 1059260684Skaiw \ 1060260684Skaiw product(intx, BiasedLockingDecayTime, 25000, \ 1061260684Skaiw "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 1062260684Skaiw "type after previous bulk rebias") \ 1063260684Skaiw \ 1064260684Skaiw /* tracing */ \ 1065260684Skaiw \ 1066260684Skaiw notproduct(bool, TraceRuntimeCalls, false, \ 1067260684Skaiw "Trace run-time calls") \ 1068260684Skaiw \ 1069260684Skaiw develop(bool, TraceJNICalls, false, \ 1070260684Skaiw "Trace JNI calls") \ 1071260684Skaiw \ 1072260684Skaiw notproduct(bool, TraceJVMCalls, false, \ 1073260684Skaiw "Trace JVM calls") \ 1074260684Skaiw \ 1075260684Skaiw product(ccstr, TraceJVMTI, NULL, \ 1076260684Skaiw "Trace flags for JVMTI functions and events") \ 1077260684Skaiw \ 1078260684Skaiw /* This option can change an EMCP method into an obsolete method. */ \ 1079260684Skaiw /* This can affect tests that except specific methods to be EMCP. */ \ 1080260684Skaiw /* This option should be used with caution. */ \ 1081260684Skaiw product(bool, StressLdcRewrite, false, \ 1082260684Skaiw "Force ldc -> ldc_w rewrite during RedefineClasses") \ 1083260684Skaiw \ 1084260684Skaiw product(intx, TraceRedefineClasses, 0, \ 1085260684Skaiw "Trace level for JVMTI RedefineClasses") \ 1086260684Skaiw \ 1087260684Skaiw /* change to false by default sometime after Mustang */ \ 1088260684Skaiw product(bool, VerifyMergedCPBytecodes, true, \ 1089260684Skaiw "Verify bytecodes after RedefineClasses constant pool merging") \ 1090260684Skaiw \ 1091260684Skaiw develop(bool, TraceJNIHandleAllocation, false, \ 1092260684Skaiw "Trace allocation/deallocation of JNI handle blocks") \ 1093260684Skaiw \ 1094260684Skaiw develop(bool, TraceThreadEvents, false, \ 1095260684Skaiw "Trace all thread events") \ 1096260684Skaiw \ 1097260684Skaiw develop(bool, TraceBytecodes, false, \ 1098260684Skaiw "Trace bytecode execution") \ 1099260684Skaiw \ 1100260684Skaiw develop(bool, TraceClassInitialization, false, \ 1101260684Skaiw "Trace class initialization") \ 1102260684Skaiw \ 1103260684Skaiw develop(bool, TraceExceptions, false, \ 1104260684Skaiw "Trace exceptions") \ 1105260684Skaiw \ 1106260684Skaiw develop(bool, TraceICs, false, \ 1107260684Skaiw "Trace inline cache changes") \ 1108260684Skaiw \ 1109260684Skaiw notproduct(bool, TraceInvocationCounterOverflow, false, \ 1110260684Skaiw "Trace method invocation counter overflow") \ 1111260684Skaiw \ 1112260684Skaiw develop(bool, TraceInlineCacheClearing, false, \ 1113260684Skaiw "Trace clearing of inline caches in nmethods") \ 1114260684Skaiw \ 1115260684Skaiw develop(bool, TraceDependencies, false, \ 1116260684Skaiw "Trace dependencies") \ 1117260684Skaiw \ 1118260684Skaiw develop(bool, VerifyDependencies, trueInDebug, \ 1119260684Skaiw "Exercise and verify the compilation dependency mechanism") \ 1120260684Skaiw \ 1121260684Skaiw develop(bool, TraceNewOopMapGeneration, false, \ 1122260684Skaiw "Trace OopMapGeneration") \ 1123260684Skaiw \ 1124260684Skaiw develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1125260684Skaiw "Trace OopMapGeneration: print detailed cell states") \ 1126260684Skaiw \ 1127260684Skaiw develop(bool, TimeOopMap, false, \ 1128260684Skaiw "Time calls to GenerateOopMap::compute_map() in sum") \ 1129260684Skaiw \ 1130260684Skaiw develop(bool, TimeOopMap2, false, \ 1131260684Skaiw "Time calls to GenerateOopMap::compute_map() individually") \ 1132260684Skaiw \ 1133260684Skaiw develop(bool, TraceMonitorMismatch, false, \ 1134260684Skaiw "Trace monitor matching failures during OopMapGeneration") \ 1135260684Skaiw \ 1136260684Skaiw develop(bool, TraceOopMapRewrites, false, \ 1137260684Skaiw "Trace rewritting of method oops during oop map generation") \ 1138260684Skaiw \ 1139260684Skaiw develop(bool, TraceSafepoint, false, \ 1140260684Skaiw "Trace safepoint operations") \ 1141260684Skaiw \ 1142260684Skaiw develop(bool, TraceICBuffer, false, \ 1143260684Skaiw "Trace usage of IC buffer") \ 1144260684Skaiw \ 1145260684Skaiw develop(bool, TraceCompiledIC, false, \ 1146260684Skaiw "Trace changes of compiled IC") \ 1147260684Skaiw \ 1148260684Skaiw notproduct(bool, TraceZapDeadLocals, false, \ 1149260684Skaiw "Trace zapping dead locals") \ 1150260684Skaiw \ 1151260684Skaiw develop(bool, TraceStartupTime, false, \ 1152260684Skaiw "Trace setup time") \ 1153260684Skaiw \ 1154260684Skaiw develop(bool, TraceHPI, false, \ 1155260684Skaiw "Trace Host Porting Interface (HPI)") \ 1156260684Skaiw \ 1157260684Skaiw product(ccstr, HPILibPath, NULL, \ 1158260684Skaiw "Specify alternate path to HPI library") \ 1159260684Skaiw \ 1160260684Skaiw develop(bool, TraceProtectionDomainVerification, false, \ 1161260684Skaiw "Trace protection domain verifcation") \ 1162260684Skaiw \ 1163260684Skaiw develop(bool, TraceClearedExceptions, false, \ 1164260684Skaiw "Prints when an exception is forcibly cleared") \ 1165260684Skaiw \ 1166260684Skaiw product(bool, TraceClassResolution, false, \ 1167260684Skaiw "Trace all constant pool resolutions (for debugging)") \ 1168260684Skaiw \ 1169260684Skaiw product(bool, TraceBiasedLocking, false, \ 1170260684Skaiw "Trace biased locking in JVM") \ 1171260684Skaiw \ 1172260684Skaiw product(bool, TraceMonitorInflation, false, \ 1173260684Skaiw "Trace monitor inflation in JVM") \ 1174260684Skaiw \ 1175260684Skaiw /* assembler */ \ 1176260684Skaiw product(bool, Use486InstrsOnly, false, \ 1177260684Skaiw "Use 80486 Compliant instruction subset") \ 1178260684Skaiw \ 1179260684Skaiw /* gc */ \ 1180260684Skaiw \ 1181260684Skaiw product(bool, UseSerialGC, false, \ 1182260684Skaiw "Use the serial garbage collector") \ 1183260684Skaiw \ 1184260684Skaiw experimental(bool, UseG1GC, false, \ 1185260684Skaiw "Use the Garbage-First garbage collector") \ 1186260684Skaiw \ 1187260684Skaiw product(bool, UseParallelGC, false, \ 1188260684Skaiw "Use the Parallel Scavenge garbage collector") \ 1189260684Skaiw \ 1190260684Skaiw product(bool, UseParallelOldGC, false, \ 1191260684Skaiw "Use the Parallel Old garbage collector") \ 1192260684Skaiw \ 1193260684Skaiw product(bool, UseParallelOldGCCompacting, true, \ 1194260684Skaiw "In the Parallel Old garbage collector use parallel compaction") \ 1195260684Skaiw \ 1196260684Skaiw product(bool, UseParallelDensePrefixUpdate, true, \ 1197260684Skaiw "In the Parallel Old garbage collector use parallel dense" \ 1198260684Skaiw " prefix update") \ 1199260684Skaiw \ 1200260684Skaiw product(uintx, HeapMaximumCompactionInterval, 20, \ 1201260684Skaiw "How often should we maximally compact the heap (not allowing " \ 1202260684Skaiw "any dead space)") \ 1203260684Skaiw \ 1204260684Skaiw product(uintx, HeapFirstMaximumCompactionCount, 3, \ 1205260684Skaiw "The collection count for the first maximum compaction") \ 1206260684Skaiw \ 1207276371Semaste product(bool, UseMaximumCompactionOnSystemGC, true, \ 1208276371Semaste "In the Parallel Old garbage collector maximum compaction for " \ 1209276371Semaste "a system GC") \ 1210276371Semaste \ 1211276371Semaste product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ 1212276371Semaste "The mean used by the par compact dead wood" \ 1213276371Semaste "limiter (a number between 0-100).") \ 1214276371Semaste \ 1215276371Semaste product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ 1216276371Semaste "The standard deviation used by the par compact dead wood" \ 1217276371Semaste "limiter (a number between 0-100).") \ 1218276371Semaste \ 1219276371Semaste product(bool, UseParallelOldGCDensePrefix, true, \ 1220276371Semaste "Use a dense prefix with the Parallel Old garbage collector") \ 1221276371Semaste \ 1222276371Semaste product(uintx, ParallelGCThreads, 0, \ 1223276371Semaste "Number of parallel threads parallel gc will use") \ 1224276371Semaste \ 1225276371Semaste product(uintx, ParallelCMSThreads, 0, \ 1226276371Semaste "Max number of threads CMS will use for concurrent work") \ 1227276371Semaste \ 1228276371Semaste develop(bool, ParallelOldGCSplitALot, false, \ 1229276371Semaste "Provoke splitting (copying data from a young gen space to" \ 1230276371Semaste "multiple destination spaces)") \ 1231260684Skaiw \ 1232260684Skaiw develop(uintx, ParallelOldGCSplitInterval, 3, \ 1233260684Skaiw "How often to provoke splitting a young gen space") \ 1234260684Skaiw \ 1235260684Skaiw develop(bool, TraceRegionTasksQueuing, false, \ 1236260684Skaiw "Trace the queuing of the region tasks") \ 1237260684Skaiw \ 1238260684Skaiw product(uintx, ParallelMarkingThreads, 0, \ 1239260684Skaiw "Number of marking threads concurrent gc will use") \ 1240260684Skaiw \ 1241260684Skaiw product(uintx, YoungPLABSize, 4096, \ 1242260684Skaiw "Size of young gen promotion labs (in HeapWords)") \ 1243260684Skaiw \ 1244260684Skaiw product(uintx, OldPLABSize, 1024, \ 1245260684Skaiw "Size of old gen promotion labs (in HeapWords)") \ 1246260684Skaiw \ 1247260684Skaiw product(uintx, GCTaskTimeStampEntries, 200, \ 1248260684Skaiw "Number of time stamp entries per gc worker thread") \ 1249260684Skaiw \ 1250260684Skaiw product(bool, AlwaysTenure, false, \ 1251260684Skaiw "Always tenure objects in eden. (ParallelGC only)") \ 1252260684Skaiw \ 1253260684Skaiw product(bool, NeverTenure, false, \ 1254260684Skaiw "Never tenure objects in eden, May tenure on overflow" \ 1255260684Skaiw " (ParallelGC only)") \ 1256260684Skaiw \ 1257260684Skaiw product(bool, ScavengeBeforeFullGC, true, \ 1258260684Skaiw "Scavenge youngest generation before each full GC," \ 1259260684Skaiw " used with UseParallelGC") \ 1260260684Skaiw \ 1261260684Skaiw develop(bool, ScavengeWithObjectsInToSpace, false, \ 1262260684Skaiw "Allow scavenges to occur when to_space contains objects.") \ 1263260684Skaiw \ 1264260684Skaiw product(bool, UseConcMarkSweepGC, false, \ 1265260684Skaiw "Use Concurrent Mark-Sweep GC in the old generation") \ 1266260684Skaiw \ 1267260684Skaiw product(bool, ExplicitGCInvokesConcurrent, false, \ 1268260684Skaiw "A System.gc() request invokes a concurrent collection;" \ 1269260684Skaiw " (effective only when UseConcMarkSweepGC)") \ 1270260684Skaiw \ 1271260684Skaiw product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ 1272260684Skaiw "A System.gc() request invokes a concurrent collection and" \ 1273260684Skaiw " also unloads classes during such a concurrent gc cycle " \ 1274260684Skaiw " (effective only when UseConcMarkSweepGC)") \ 1275260684Skaiw \ 1276260684Skaiw develop(bool, UseCMSAdaptiveFreeLists, true, \ 1277260684Skaiw "Use Adaptive Free Lists in the CMS generation") \ 1278260684Skaiw \ 1279260684Skaiw develop(bool, UseAsyncConcMarkSweepGC, true, \ 1280260684Skaiw "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ 1281260684Skaiw \ 1282260684Skaiw develop(bool, RotateCMSCollectionTypes, false, \ 1283260684Skaiw "Rotate the CMS collections among concurrent and STW") \ 1284260684Skaiw \ 1285260684Skaiw product(bool, UseCMSBestFit, true, \ 1286260684Skaiw "Use CMS best fit allocation strategy") \ 1287260684Skaiw \ 1288260684Skaiw product(bool, UseCMSCollectionPassing, true, \ 1289260684Skaiw "Use passing of collection from background to foreground") \ 1290260684Skaiw \ 1291260684Skaiw product(bool, UseParNewGC, false, \ 1292260684Skaiw "Use parallel threads in the new generation.") \ 1293260684Skaiw \ 1294260684Skaiw product(bool, ParallelGCVerbose, false, \ 1295260684Skaiw "Verbose output for parallel GC.") \ 1296260684Skaiw \ 1297260684Skaiw product(intx, ParallelGCBufferWastePct, 10, \ 1298260684Skaiw "wasted fraction of parallel allocation buffer.") \ 1299260684Skaiw \ 1300260684Skaiw product(bool, ParallelGCRetainPLAB, true, \ 1301260684Skaiw "Retain parallel allocation buffers across scavenges.") \ 1302260684Skaiw \ 1303260684Skaiw product(intx, TargetPLABWastePct, 10, \ 1304260684Skaiw "target wasted space in last buffer as pct of overall allocation")\ 1305260684Skaiw \ 1306260684Skaiw product(uintx, PLABWeight, 75, \ 1307260684Skaiw "Percentage (0-100) used to weight the current sample when" \ 1308260684Skaiw "computing exponentially decaying average for ResizePLAB.") \ 1309260684Skaiw \ 1310260684Skaiw product(bool, ResizePLAB, true, \ 1311260684Skaiw "Dynamically resize (survivor space) promotion labs") \ 1312260684Skaiw \ 1313260684Skaiw product(bool, PrintPLAB, false, \ 1314260684Skaiw "Print (survivor space) promotion labs sizing decisions") \ 1315260684Skaiw \ 1316260684Skaiw product(intx, ParGCArrayScanChunk, 50, \ 1317260684Skaiw "Scan a subset and push remainder, if array is bigger than this") \ 1318260684Skaiw \ 1319260684Skaiw notproduct(bool, ParGCWorkQueueOverflowALot, false, \ 1320260684Skaiw "Whether we should simulate work queue overflow in ParNew") \ 1321260684Skaiw \ 1322260684Skaiw notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ 1323260684Skaiw "An `interval' counter that determines how frequently" \ 1324260684Skaiw " we simulate overflow; a smaller number increases frequency") \ 1325260684Skaiw \ 1326260684Skaiw product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ 1327260684Skaiw "The desired number of objects to claim from the overflow list") \ 1328260684Skaiw \ 1329260684Skaiw product(uintx, CMSParPromoteBlocksToClaim, 50, \ 1330260684Skaiw "Number of blocks to attempt to claim when refilling CMS LAB for "\ 1331260684Skaiw "parallel GC.") \ 1332260684Skaiw \ 1333260684Skaiw product(bool, AlwaysPreTouch, false, \ 1334260684Skaiw "It forces all freshly committed pages to be pre-touched.") \ 1335260684Skaiw \ 1336260684Skaiw product(bool, CMSUseOldDefaults, false, \ 1337260684Skaiw "A flag temporarily introduced to allow reverting to some older" \ 1338260684Skaiw "default settings; older as of 6.0 ") \ 1339260684Skaiw \ 1340260684Skaiw product(intx, CMSYoungGenPerWorker, 16*M, \ 1341260684Skaiw "The amount of young gen chosen by default per GC worker " \ 1342260684Skaiw "thread available ") \ 1343260684Skaiw \ 1344260684Skaiw product(bool, GCOverheadReporting, false, \ 1345260684Skaiw "Enables the GC overhead reporting facility") \ 1346260684Skaiw \ 1347260684Skaiw product(intx, GCOverheadReportingPeriodMS, 100, \ 1348260684Skaiw "Reporting period for conc GC overhead reporting, in ms ") \ 1349260684Skaiw \ 1350260684Skaiw product(bool, CMSIncrementalMode, false, \ 1351260684Skaiw "Whether CMS GC should operate in \"incremental\" mode") \ 1352260684Skaiw \ 1353260684Skaiw product(uintx, CMSIncrementalDutyCycle, 10, \ 1354260684Skaiw "CMS incremental mode duty cycle (a percentage, 0-100). If" \ 1355260684Skaiw "CMSIncrementalPacing is enabled, then this is just the initial" \ 1356260684Skaiw "value") \ 1357260684Skaiw \ 1358260684Skaiw product(bool, CMSIncrementalPacing, true, \ 1359260684Skaiw "Whether the CMS incremental mode duty cycle should be " \ 1360260684Skaiw "automatically adjusted") \ 1361260684Skaiw \ 1362260684Skaiw product(uintx, CMSIncrementalDutyCycleMin, 0, \ 1363260684Skaiw "Lower bound on the duty cycle when CMSIncrementalPacing is" \ 1364260684Skaiw "enabled (a percentage, 0-100).") \ 1365260684Skaiw \ 1366260684Skaiw product(uintx, CMSIncrementalSafetyFactor, 10, \ 1367260684Skaiw "Percentage (0-100) used to add conservatism when computing the" \ 1368260684Skaiw "duty cycle.") \ 1369260684Skaiw \ 1370260684Skaiw product(uintx, CMSIncrementalOffset, 0, \ 1371260684Skaiw "Percentage (0-100) by which the CMS incremental mode duty cycle" \ 1372260684Skaiw "is shifted to the right within the period between young GCs") \ 1373260684Skaiw \ 1374260684Skaiw product(uintx, CMSExpAvgFactor, 25, \ 1375260684Skaiw "Percentage (0-100) used to weight the current sample when" \ 1376260684Skaiw "computing exponential averages for CMS statistics.") \ 1377260684Skaiw \ 1378260684Skaiw product(uintx, CMS_FLSWeight, 50, \ 1379260684Skaiw "Percentage (0-100) used to weight the current sample when" \ 1380260684Skaiw "computing exponentially decating averages for CMS FLS statistics.") \ 1381276371Semaste \ 1382276371Semaste product(uintx, CMS_FLSPadding, 2, \ 1383276371Semaste "The multiple of deviation from mean to use for buffering" \ 1384276371Semaste "against volatility in free list demand.") \ 1385276371Semaste \ 1386276371Semaste product(uintx, FLSCoalescePolicy, 2, \ 1387276371Semaste "CMS: Aggression level for coalescing, increasing from 0 to 4") \ 1388276371Semaste \ 1389276371Semaste product(uintx, CMS_SweepWeight, 50, \ 1390276371Semaste "Percentage (0-100) used to weight the current sample when" \ 1391276371Semaste "computing exponentially decaying average for inter-sweep duration.") \ 1392276371Semaste \ 1393276371Semaste product(uintx, CMS_SweepPadding, 2, \ 1394276371Semaste "The multiple of deviation from mean to use for buffering" \ 1395276371Semaste "against volatility in inter-sweep duration.") \ 1396276371Semaste \ 1397276371Semaste product(uintx, CMS_SweepTimerThresholdMillis, 10, \ 1398276371Semaste "Skip block flux-rate sampling for an epoch unless inter-sweep " \ 1399276371Semaste " duration exceeds this threhold in milliseconds") \ 1400276371Semaste \ 1401260684Skaiw develop(bool, CMSTraceIncrementalMode, false, \ 1402260684Skaiw "Trace CMS incremental mode") \ 1403260684Skaiw \ 1404260684Skaiw develop(bool, CMSTraceIncrementalPacing, false, \ 1405260684Skaiw "Trace CMS incremental mode pacing computation") \ 1406260684Skaiw \ 1407260684Skaiw develop(bool, CMSTraceThreadState, false, \ 1408260684Skaiw "Trace the CMS thread state (enable the trace_state() method)") \ 1409260684Skaiw \ 1410260684Skaiw product(bool, CMSClassUnloadingEnabled, false, \ 1411260684Skaiw "Whether class unloading enabled when using CMS GC") \ 1412260684Skaiw \ 1413260684Skaiw product(uintx, CMSClassUnloadingMaxInterval, 0, \ 1414260684Skaiw "When CMS class unloading is enabled, the maximum CMS cycle count"\ 1415260684Skaiw " for which classes may not be unloaded") \ 1416260684Skaiw \ 1417260684Skaiw product(bool, CMSCompactWhenClearAllSoftRefs, true, \ 1418260684Skaiw "Compact when asked to collect CMS gen with clear_all_soft_refs") \ 1419260684Skaiw \ 1420260684Skaiw product(bool, UseCMSCompactAtFullCollection, true, \ 1421260684Skaiw "Use mark sweep compact at full collections") \ 1422260684Skaiw \ 1423260684Skaiw product(uintx, CMSFullGCsBeforeCompaction, 0, \ 1424260684Skaiw "Number of CMS full collection done before compaction if > 0") \ 1425260684Skaiw \ 1426260684Skaiw develop(intx, CMSDictionaryChoice, 0, \ 1427260684Skaiw "Use BinaryTreeDictionary as default in the CMS generation") \ 1428260684Skaiw \ 1429260684Skaiw product(uintx, CMSIndexedFreeListReplenish, 4, \ 1430260684Skaiw "Replenish and indexed free list with this number of chunks") \ 1431260684Skaiw \ 1432260684Skaiw product(bool, CMSLoopWarn, false, \ 1433260684Skaiw "Warn in case of excessive CMS looping") \ 1434260684Skaiw \ 1435260684Skaiw develop(bool, CMSOverflowEarlyRestoration, false, \ 1436260684Skaiw "Whether preserved marks should be restored early") \ 1437260684Skaiw \ 1438260684Skaiw product(uintx, CMSMarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ 1439260684Skaiw "Size of CMS marking stack") \ 1440260684Skaiw \ 1441260684Skaiw product(uintx, CMSMarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ 1442260684Skaiw "Max size of CMS marking stack") \ 1443260684Skaiw \ 1444260684Skaiw notproduct(bool, CMSMarkStackOverflowALot, false, \ 1445260684Skaiw "Whether we should simulate frequent marking stack / work queue" \ 1446260684Skaiw " overflow") \ 1447 \ 1448 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ 1449 "An `interval' counter that determines how frequently" \ 1450 " we simulate overflow; a smaller number increases frequency") \ 1451 \ 1452 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ 1453 "(Temporary, subject to experimentation)" \ 1454 "Maximum number of abortable preclean iterations, if > 0") \ 1455 \ 1456 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ 1457 "(Temporary, subject to experimentation)" \ 1458 "Maximum time in abortable preclean in ms") \ 1459 \ 1460 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ 1461 "(Temporary, subject to experimentation)" \ 1462 "Nominal minimum work per abortable preclean iteration") \ 1463 \ 1464 product(intx, CMSAbortablePrecleanWaitMillis, 100, \ 1465 "(Temporary, subject to experimentation)" \ 1466 " Time that we sleep between iterations when not given" \ 1467 " enough work per iteration") \ 1468 \ 1469 product(uintx, CMSRescanMultiple, 32, \ 1470 "Size (in cards) of CMS parallel rescan task") \ 1471 \ 1472 product(uintx, CMSConcMarkMultiple, 32, \ 1473 "Size (in cards) of CMS concurrent MT marking task") \ 1474 \ 1475 product(uintx, CMSRevisitStackSize, 1*M, \ 1476 "Size of CMS KlassKlass revisit stack") \ 1477 \ 1478 product(bool, CMSAbortSemantics, false, \ 1479 "Whether abort-on-overflow semantics is implemented") \ 1480 \ 1481 product(bool, CMSParallelRemarkEnabled, true, \ 1482 "Whether parallel remark enabled (only if ParNewGC)") \ 1483 \ 1484 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ 1485 "Whether parallel remark of survivor space" \ 1486 " enabled (effective only if CMSParallelRemarkEnabled)") \ 1487 \ 1488 product(bool, CMSPLABRecordAlways, true, \ 1489 "Whether to always record survivor space PLAB bdries" \ 1490 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ 1491 \ 1492 product(bool, CMSConcurrentMTEnabled, true, \ 1493 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ 1494 \ 1495 product(bool, CMSPermGenPrecleaningEnabled, true, \ 1496 "Whether concurrent precleaning enabled in perm gen" \ 1497 " (effective only when CMSPrecleaningEnabled is true)") \ 1498 \ 1499 product(bool, CMSPrecleaningEnabled, true, \ 1500 "Whether concurrent precleaning enabled") \ 1501 \ 1502 product(uintx, CMSPrecleanIter, 3, \ 1503 "Maximum number of precleaning iteration passes") \ 1504 \ 1505 product(uintx, CMSPrecleanNumerator, 2, \ 1506 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1507 " ratio") \ 1508 \ 1509 product(uintx, CMSPrecleanDenominator, 3, \ 1510 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ 1511 " ratio") \ 1512 \ 1513 product(bool, CMSPrecleanRefLists1, true, \ 1514 "Preclean ref lists during (initial) preclean phase") \ 1515 \ 1516 product(bool, CMSPrecleanRefLists2, false, \ 1517 "Preclean ref lists during abortable preclean phase") \ 1518 \ 1519 product(bool, CMSPrecleanSurvivors1, false, \ 1520 "Preclean survivors during (initial) preclean phase") \ 1521 \ 1522 product(bool, CMSPrecleanSurvivors2, true, \ 1523 "Preclean survivors during abortable preclean phase") \ 1524 \ 1525 product(uintx, CMSPrecleanThreshold, 1000, \ 1526 "Don't re-iterate if #dirty cards less than this") \ 1527 \ 1528 product(bool, CMSCleanOnEnter, true, \ 1529 "Clean-on-enter optimization for reducing number of dirty cards") \ 1530 \ 1531 product(uintx, CMSRemarkVerifyVariant, 1, \ 1532 "Choose variant (1,2) of verification following remark") \ 1533 \ 1534 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ 1535 "If Eden used is below this value, don't try to schedule remark") \ 1536 \ 1537 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ 1538 "The Eden occupancy % at which to try and schedule remark pause") \ 1539 \ 1540 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ 1541 "Start sampling Eden top at least before yg occupancy reaches" \ 1542 " 1/<ratio> of the size at which we plan to schedule remark") \ 1543 \ 1544 product(uintx, CMSSamplingGrain, 16*K, \ 1545 "The minimum distance between eden samples for CMS (see above)") \ 1546 \ 1547 product(bool, CMSScavengeBeforeRemark, false, \ 1548 "Attempt scavenge before the CMS remark step") \ 1549 \ 1550 develop(bool, CMSTraceSweeper, false, \ 1551 "Trace some actions of the CMS sweeper") \ 1552 \ 1553 product(uintx, CMSWorkQueueDrainThreshold, 10, \ 1554 "Don't drain below this size per parallel worker/thief") \ 1555 \ 1556 product(intx, CMSWaitDuration, 2000, \ 1557 "Time in milliseconds that CMS thread waits for young GC") \ 1558 \ 1559 product(bool, CMSYield, true, \ 1560 "Yield between steps of concurrent mark & sweep") \ 1561 \ 1562 product(uintx, CMSBitMapYieldQuantum, 10*M, \ 1563 "Bitmap operations should process at most this many bits" \ 1564 "between yields") \ 1565 \ 1566 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ 1567 "Verify that all refs across the FLS boundary " \ 1568 " are to valid objects") \ 1569 \ 1570 diagnostic(bool, FLSVerifyLists, false, \ 1571 "Do lots of (expensive) FreeListSpace verification") \ 1572 \ 1573 diagnostic(bool, FLSVerifyIndexTable, false, \ 1574 "Do lots of (expensive) FLS index table verification") \ 1575 \ 1576 develop(bool, FLSVerifyDictionary, false, \ 1577 "Do lots of (expensive) FLS dictionary verification") \ 1578 \ 1579 develop(bool, VerifyBlockOffsetArray, false, \ 1580 "Do (expensive!) block offset array verification") \ 1581 \ 1582 product(bool, BlockOffsetArrayUseUnallocatedBlock, trueInDebug, \ 1583 "Maintain _unallocated_block in BlockOffsetArray" \ 1584 " (currently applicable only to CMS collector)") \ 1585 \ 1586 develop(bool, TraceCMSState, false, \ 1587 "Trace the state of the CMS collection") \ 1588 \ 1589 product(intx, RefDiscoveryPolicy, 0, \ 1590 "Whether reference-based(0) or referent-based(1)") \ 1591 \ 1592 product(bool, ParallelRefProcEnabled, false, \ 1593 "Enable parallel reference processing whenever possible") \ 1594 \ 1595 product(bool, ParallelRefProcBalancingEnabled, true, \ 1596 "Enable balancing of reference processing queues") \ 1597 \ 1598 product(intx, CMSTriggerRatio, 80, \ 1599 "Percentage of MinHeapFreeRatio in CMS generation that is " \ 1600 " allocated before a CMS collection cycle commences") \ 1601 \ 1602 product(intx, CMSTriggerPermRatio, 80, \ 1603 "Percentage of MinHeapFreeRatio in the CMS perm generation that" \ 1604 " is allocated before a CMS collection cycle commences, that " \ 1605 " also collects the perm generation") \ 1606 \ 1607 product(uintx, CMSBootstrapOccupancy, 50, \ 1608 "Percentage CMS generation occupancy at which to " \ 1609 " initiate CMS collection for bootstrapping collection stats") \ 1610 \ 1611 product(intx, CMSInitiatingOccupancyFraction, -1, \ 1612 "Percentage CMS generation occupancy to start a CMS collection " \ 1613 " cycle (A negative value means that CMSTriggerRatio is used)") \ 1614 \ 1615 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ 1616 "Percentage CMS perm generation occupancy to start a CMScollection"\ 1617 " cycle (A negative value means that CMSTriggerPermRatio is used)")\ 1618 \ 1619 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1620 "Only use occupancy as a crierion for starting a CMS collection") \ 1621 \ 1622 product(intx, CMSIsTooFullPercentage, 98, \ 1623 "An absolute ceiling above which CMS will always consider the" \ 1624 " perm gen ripe for collection") \ 1625 \ 1626 develop(bool, CMSTestInFreeList, false, \ 1627 "Check if the coalesced range is already in the " \ 1628 "free lists as claimed.") \ 1629 \ 1630 notproduct(bool, CMSVerifyReturnedBytes, false, \ 1631 "Check that all the garbage collected was returned to the " \ 1632 "free lists.") \ 1633 \ 1634 notproduct(bool, ScavengeALot, false, \ 1635 "Force scavenge at every Nth exit from the runtime system " \ 1636 "(N=ScavengeALotInterval)") \ 1637 \ 1638 develop(bool, FullGCALot, false, \ 1639 "Force full gc at every Nth exit from the runtime system " \ 1640 "(N=FullGCALotInterval)") \ 1641 \ 1642 notproduct(bool, GCALotAtAllSafepoints, false, \ 1643 "Enforce ScavengeALot/GCALot at all potential safepoints") \ 1644 \ 1645 product(bool, HandlePromotionFailure, true, \ 1646 "The youngest generation collection does not require" \ 1647 " a guarantee of full promotion of all live objects.") \ 1648 \ 1649 notproduct(bool, PromotionFailureALot, false, \ 1650 "Use promotion failure handling on every youngest generation " \ 1651 "collection") \ 1652 \ 1653 develop(uintx, PromotionFailureALotCount, 1000, \ 1654 "Number of promotion failures occurring at ParGCAllocBuffer" \ 1655 "refill attempts (ParNew) or promotion attempts " \ 1656 "(other young collectors) ") \ 1657 \ 1658 develop(uintx, PromotionFailureALotInterval, 5, \ 1659 "Total collections between promotion failures alot") \ 1660 \ 1661 develop(intx, WorkStealingSleepMillis, 1, \ 1662 "Sleep time when sleep is used for yields") \ 1663 \ 1664 develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \ 1665 "Number of yields before a sleep is done during workstealing") \ 1666 \ 1667 develop(uintx, WorkStealingHardSpins, 4096, \ 1668 "Number of iterations in a spin loop between checks on " \ 1669 "time out of hard spin") \ 1670 \ 1671 develop(uintx, WorkStealingSpinToYieldRatio, 10, \ 1672 "Ratio of hard spins to calls to yield") \ 1673 \ 1674 product(uintx, PreserveMarkStackSize, 1024, \ 1675 "Size for stack used in promotion failure handling") \ 1676 \ 1677 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ 1678 \ 1679 product_pd(bool, ResizeTLAB, \ 1680 "Dynamically resize tlab size for threads") \ 1681 \ 1682 product(bool, ZeroTLAB, false, \ 1683 "Zero out the newly created TLAB") \ 1684 \ 1685 product(bool, FastTLABRefill, true, \ 1686 "Use fast TLAB refill code") \ 1687 \ 1688 product(bool, PrintTLAB, false, \ 1689 "Print various TLAB related information") \ 1690 \ 1691 product(bool, TLABStats, true, \ 1692 "Print various TLAB related information") \ 1693 \ 1694 product_pd(bool, NeverActAsServerClassMachine, \ 1695 "Never act like a server-class machine") \ 1696 \ 1697 product(bool, AlwaysActAsServerClassMachine, false, \ 1698 "Always act like a server-class machine") \ 1699 \ 1700 product_pd(uintx, DefaultMaxRAM, \ 1701 "Maximum real memory size for setting server class heap size") \ 1702 \ 1703 product(uintx, DefaultMaxRAMFraction, 4, \ 1704 "Fraction (1/n) of real memory used for server class max heap") \ 1705 \ 1706 product(uintx, DefaultInitialRAMFraction, 64, \ 1707 "Fraction (1/n) of real memory used for server class initial heap") \ 1708 \ 1709 product(bool, UseAutoGCSelectPolicy, false, \ 1710 "Use automatic collection selection policy") \ 1711 \ 1712 product(uintx, AutoGCSelectPauseMillis, 5000, \ 1713 "Automatic GC selection pause threshhold in ms") \ 1714 \ 1715 product(bool, UseAdaptiveSizePolicy, true, \ 1716 "Use adaptive generation sizing policies") \ 1717 \ 1718 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ 1719 "Use adaptive survivor sizing policies") \ 1720 \ 1721 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ 1722 "Use adaptive young-old sizing policies at minor collections") \ 1723 \ 1724 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ 1725 "Use adaptive young-old sizing policies at major collections") \ 1726 \ 1727 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ 1728 "Use statistics from System.GC for adaptive size policy") \ 1729 \ 1730 product(bool, UseAdaptiveGCBoundary, false, \ 1731 "Allow young-old boundary to move") \ 1732 \ 1733 develop(bool, TraceAdaptiveGCBoundary, false, \ 1734 "Trace young-old boundary moves") \ 1735 \ 1736 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ 1737 "Resize the virtual spaces of the young or old generations") \ 1738 \ 1739 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ 1740 "Policy for changeing generation size for throughput goals") \ 1741 \ 1742 product(uintx, AdaptiveSizePausePolicy, 0, \ 1743 "Policy for changing generation size for pause goals") \ 1744 \ 1745 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ 1746 "Adjust tenured generation to achive a minor pause goal") \ 1747 \ 1748 develop(bool, PSAdjustYoungGenForMajorPause, false, \ 1749 "Adjust young generation to achive a major pause goal") \ 1750 \ 1751 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ 1752 "Number of steps where heuristics is used before data is used") \ 1753 \ 1754 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 1755 "Number of collections before the adaptive sizing is started") \ 1756 \ 1757 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 1758 "Collecton interval for printing information, zero => never") \ 1759 \ 1760 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 1761 "Use adaptive minimum footprint as a goal") \ 1762 \ 1763 product(uintx, AdaptiveSizePolicyWeight, 10, \ 1764 "Weight given to exponential resizing, between 0 and 100") \ 1765 \ 1766 product(uintx, AdaptiveTimeWeight, 25, \ 1767 "Weight given to time in adaptive policy, between 0 and 100") \ 1768 \ 1769 product(uintx, PausePadding, 1, \ 1770 "How much buffer to keep for pause time") \ 1771 \ 1772 product(uintx, PromotedPadding, 3, \ 1773 "How much buffer to keep for promotion failure") \ 1774 \ 1775 product(uintx, SurvivorPadding, 3, \ 1776 "How much buffer to keep for survivor overflow") \ 1777 \ 1778 product(uintx, AdaptivePermSizeWeight, 20, \ 1779 "Weight for perm gen exponential resizing, between 0 and 100") \ 1780 \ 1781 product(uintx, PermGenPadding, 3, \ 1782 "How much buffer to keep for perm gen sizing") \ 1783 \ 1784 product(uintx, ThresholdTolerance, 10, \ 1785 "Allowed collection cost difference between generations") \ 1786 \ 1787 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ 1788 "If collection costs are within margin, reduce both by full delta") \ 1789 \ 1790 product(uintx, YoungGenerationSizeIncrement, 20, \ 1791 "Adaptive size percentage change in young generation") \ 1792 \ 1793 product(uintx, YoungGenerationSizeSupplement, 80, \ 1794 "Supplement to YoungedGenerationSizeIncrement used at startup") \ 1795 \ 1796 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ 1797 "Decay factor to YoungedGenerationSizeSupplement") \ 1798 \ 1799 product(uintx, TenuredGenerationSizeIncrement, 20, \ 1800 "Adaptive size percentage change in tenured generation") \ 1801 \ 1802 product(uintx, TenuredGenerationSizeSupplement, 80, \ 1803 "Supplement to TenuredGenerationSizeIncrement used at startup") \ 1804 \ 1805 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ 1806 "Decay factor to TenuredGenerationSizeIncrement") \ 1807 \ 1808 product(uintx, MaxGCPauseMillis, max_uintx, \ 1809 "Adaptive size policy maximum GC pause time goal in msec") \ 1810 \ 1811 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ 1812 "Adaptive size policy maximum GC minor pause time goal in msec") \ 1813 \ 1814 product(uintx, GCTimeRatio, 99, \ 1815 "Adaptive size policy application time to GC time ratio") \ 1816 \ 1817 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ 1818 "Adaptive size scale down factor for shrinking") \ 1819 \ 1820 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ 1821 "Adaptive size decays the major cost for long major intervals") \ 1822 \ 1823 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ 1824 "Time scale over which major costs decay") \ 1825 \ 1826 product(uintx, MinSurvivorRatio, 3, \ 1827 "Minimum ratio of young generation/survivor space size") \ 1828 \ 1829 product(uintx, InitialSurvivorRatio, 8, \ 1830 "Initial ratio of eden/survivor space size") \ 1831 \ 1832 product(uintx, BaseFootPrintEstimate, 256*M, \ 1833 "Estimate of footprint other than Java Heap") \ 1834 \ 1835 product(bool, UseGCOverheadLimit, true, \ 1836 "Use policy to limit of proportion of time spent in GC " \ 1837 "before an OutOfMemory error is thrown") \ 1838 \ 1839 product(uintx, GCTimeLimit, 98, \ 1840 "Limit of proportion of time spent in GC before an OutOfMemory" \ 1841 "error is thrown (used with GCHeapFreeLimit)") \ 1842 \ 1843 product(uintx, GCHeapFreeLimit, 2, \ 1844 "Minimum percentage of free space after a full GC before an " \ 1845 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ 1846 \ 1847 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ 1848 "Number of consecutive collections before gc time limit fires") \ 1849 \ 1850 product(bool, PrintAdaptiveSizePolicy, false, \ 1851 "Print information about AdaptiveSizePolicy") \ 1852 \ 1853 product(intx, PrefetchCopyIntervalInBytes, -1, \ 1854 "How far ahead to prefetch destination area (<= 0 means off)") \ 1855 \ 1856 product(intx, PrefetchScanIntervalInBytes, -1, \ 1857 "How far ahead to prefetch scan area (<= 0 means off)") \ 1858 \ 1859 product(intx, PrefetchFieldsAhead, -1, \ 1860 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ 1861 \ 1862 develop(bool, UsePrefetchQueue, true, \ 1863 "Use the prefetch queue during PS promotion") \ 1864 \ 1865 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ 1866 "Verify system before exiting") \ 1867 \ 1868 diagnostic(bool, VerifyBeforeGC, false, \ 1869 "Verify memory system before GC") \ 1870 \ 1871 diagnostic(bool, VerifyAfterGC, false, \ 1872 "Verify memory system after GC") \ 1873 \ 1874 diagnostic(bool, VerifyDuringGC, false, \ 1875 "Verify memory system during GC (between phases)") \ 1876 \ 1877 diagnostic(bool, GCParallelVerificationEnabled, true, \ 1878 "Enable parallel memory system verification") \ 1879 \ 1880 diagnostic(bool, VerifyRememberedSets, false, \ 1881 "Verify GC remembered sets") \ 1882 \ 1883 diagnostic(bool, VerifyObjectStartArray, true, \ 1884 "Verify GC object start array if verify before/after") \ 1885 \ 1886 product(bool, DisableExplicitGC, false, \ 1887 "Tells whether calling System.gc() does a full GC") \ 1888 \ 1889 notproduct(bool, CheckMemoryInitialization, false, \ 1890 "Checks memory initialization") \ 1891 \ 1892 product(bool, CollectGen0First, false, \ 1893 "Collect youngest generation before each full GC") \ 1894 \ 1895 diagnostic(bool, BindCMSThreadToCPU, false, \ 1896 "Bind CMS Thread to CPU if possible") \ 1897 \ 1898 diagnostic(uintx, CPUForCMSThread, 0, \ 1899 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ 1900 \ 1901 product(bool, BindGCTaskThreadsToCPUs, false, \ 1902 "Bind GCTaskThreads to CPUs if possible") \ 1903 \ 1904 product(bool, UseGCTaskAffinity, false, \ 1905 "Use worker affinity when asking for GCTasks") \ 1906 \ 1907 product(uintx, ProcessDistributionStride, 4, \ 1908 "Stride through processors when distributing processes") \ 1909 \ 1910 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ 1911 "number of times the coordinator GC thread will sleep while " \ 1912 "yielding before giving up and resuming GC") \ 1913 \ 1914 product(uintx, CMSYieldSleepCount, 0, \ 1915 "number of times a GC thread (minus the coordinator) " \ 1916 "will sleep while yielding before giving up and resuming GC") \ 1917 \ 1918 notproduct(bool, PrintFlagsFinal, false, \ 1919 "Print all command line flags after argument processing") \ 1920 \ 1921 /* gc tracing */ \ 1922 manageable(bool, PrintGC, false, \ 1923 "Print message at garbage collect") \ 1924 \ 1925 manageable(bool, PrintGCDetails, false, \ 1926 "Print more details at garbage collect") \ 1927 \ 1928 manageable(bool, PrintGCDateStamps, false, \ 1929 "Print date stamps at garbage collect") \ 1930 \ 1931 manageable(bool, PrintGCTimeStamps, false, \ 1932 "Print timestamps at garbage collect") \ 1933 \ 1934 product(bool, PrintGCTaskTimeStamps, false, \ 1935 "Print timestamps for individual gc worker thread tasks") \ 1936 \ 1937 develop(intx, ConcGCYieldTimeout, 0, \ 1938 "If non-zero, assert that GC threads yield within this # of ms.") \ 1939 \ 1940 notproduct(bool, TraceMarkSweep, false, \ 1941 "Trace mark sweep") \ 1942 \ 1943 product(bool, PrintReferenceGC, false, \ 1944 "Print times spent handling reference objects during GC " \ 1945 " (enabled only when PrintGCDetails)") \ 1946 \ 1947 develop(bool, TraceReferenceGC, false, \ 1948 "Trace handling of soft/weak/final/phantom references") \ 1949 \ 1950 develop(bool, TraceFinalizerRegistration, false, \ 1951 "Trace registration of final references") \ 1952 \ 1953 notproduct(bool, TraceScavenge, false, \ 1954 "Trace scavenge") \ 1955 \ 1956 product_rw(bool, TraceClassLoading, false, \ 1957 "Trace all classes loaded") \ 1958 \ 1959 product(bool, TraceClassLoadingPreorder, false, \ 1960 "Trace all classes loaded in order referenced (not loaded)") \ 1961 \ 1962 product_rw(bool, TraceClassUnloading, false, \ 1963 "Trace unloading of classes") \ 1964 \ 1965 product_rw(bool, TraceLoaderConstraints, false, \ 1966 "Trace loader constraints") \ 1967 \ 1968 product(bool, TraceGen0Time, false, \ 1969 "Trace accumulated time for Gen 0 collection") \ 1970 \ 1971 product(bool, TraceGen1Time, false, \ 1972 "Trace accumulated time for Gen 1 collection") \ 1973 \ 1974 product(bool, PrintTenuringDistribution, false, \ 1975 "Print tenuring age information") \ 1976 \ 1977 product_rw(bool, PrintHeapAtGC, false, \ 1978 "Print heap layout before and after each GC") \ 1979 \ 1980 product(bool, PrintHeapAtSIGBREAK, true, \ 1981 "Print heap layout in response to SIGBREAK") \ 1982 \ 1983 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ 1984 "Print a class histogram before any major stop-world GC") \ 1985 \ 1986 manageable(bool, PrintClassHistogramAfterFullGC, false, \ 1987 "Print a class histogram after any major stop-world GC") \ 1988 \ 1989 manageable(bool, PrintClassHistogram, false, \ 1990 "Print a histogram of class instances") \ 1991 \ 1992 develop(bool, TraceWorkGang, false, \ 1993 "Trace activities of work gangs") \ 1994 \ 1995 product(bool, TraceParallelOldGCTasks, false, \ 1996 "Trace multithreaded GC activity") \ 1997 \ 1998 develop(bool, TraceBlockOffsetTable, false, \ 1999 "Print BlockOffsetTable maps") \ 2000 \ 2001 develop(bool, TraceCardTableModRefBS, false, \ 2002 "Print CardTableModRefBS maps") \ 2003 \ 2004 develop(bool, TraceGCTaskManager, false, \ 2005 "Trace actions of the GC task manager") \ 2006 \ 2007 develop(bool, TraceGCTaskQueue, false, \ 2008 "Trace actions of the GC task queues") \ 2009 \ 2010 develop(bool, TraceGCTaskThread, false, \ 2011 "Trace actions of the GC task threads") \ 2012 \ 2013 product(bool, PrintParallelOldGCPhaseTimes, false, \ 2014 "Print the time taken by each parallel old gc phase." \ 2015 "PrintGCDetails must also be enabled.") \ 2016 \ 2017 develop(bool, TraceParallelOldGCMarkingPhase, false, \ 2018 "Trace parallel old gc marking phase") \ 2019 \ 2020 develop(bool, TraceParallelOldGCSummaryPhase, false, \ 2021 "Trace parallel old gc summary phase") \ 2022 \ 2023 develop(bool, TraceParallelOldGCCompactionPhase, false, \ 2024 "Trace parallel old gc compaction phase") \ 2025 \ 2026 develop(bool, TraceParallelOldGCDensePrefix, false, \ 2027 "Trace parallel old gc dense prefix computation") \ 2028 \ 2029 develop(bool, IgnoreLibthreadGPFault, false, \ 2030 "Suppress workaround for libthread GP fault") \ 2031 \ 2032 product(bool, PrintJNIGCStalls, false, \ 2033 "Print diagnostic message when GC is stalled" \ 2034 "by JNI critical section") \ 2035 \ 2036 /* JVMTI heap profiling */ \ 2037 \ 2038 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 2039 "Trace JVMTI object tagging calls") \ 2040 \ 2041 diagnostic(bool, VerifyBeforeIteration, false, \ 2042 "Verify memory system before JVMTI iteration") \ 2043 \ 2044 /* compiler interface */ \ 2045 \ 2046 develop(bool, CIPrintCompilerName, false, \ 2047 "when CIPrint is active, print the name of the active compiler") \ 2048 \ 2049 develop(bool, CIPrintCompileQueue, false, \ 2050 "display the contents of the compile queue whenever a " \ 2051 "compilation is enqueued") \ 2052 \ 2053 develop(bool, CIPrintRequests, false, \ 2054 "display every request for compilation") \ 2055 \ 2056 product(bool, CITime, false, \ 2057 "collect timing information for compilation") \ 2058 \ 2059 develop(bool, CITimeEach, false, \ 2060 "display timing information after each successful compilation") \ 2061 \ 2062 develop(bool, CICountOSR, true, \ 2063 "use a separate counter when assigning ids to osr compilations") \ 2064 \ 2065 develop(bool, CICompileNatives, true, \ 2066 "compile native methods if supported by the compiler") \ 2067 \ 2068 develop_pd(bool, CICompileOSR, \ 2069 "compile on stack replacement methods if supported by the " \ 2070 "compiler") \ 2071 \ 2072 develop(bool, CIPrintMethodCodes, false, \ 2073 "print method bytecodes of the compiled code") \ 2074 \ 2075 develop(bool, CIPrintTypeFlow, false, \ 2076 "print the results of ciTypeFlow analysis") \ 2077 \ 2078 develop(bool, CITraceTypeFlow, false, \ 2079 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 2080 \ 2081 develop(intx, CICloneLoopTestLimit, 100, \ 2082 "size limit for blocks heuristically cloned in ciTypeFlow") \ 2083 \ 2084 /* temp diagnostics */ \ 2085 \ 2086 diagnostic(bool, TraceRedundantCompiles, false, \ 2087 "Have compile broker print when a request already in the queue is"\ 2088 " requested again") \ 2089 \ 2090 diagnostic(bool, InitialCompileFast, false, \ 2091 "Initial compile at CompLevel_fast_compile") \ 2092 \ 2093 diagnostic(bool, InitialCompileReallyFast, false, \ 2094 "Initial compile at CompLevel_really_fast_compile (no profile)") \ 2095 \ 2096 diagnostic(bool, FullProfileOnReInterpret, true, \ 2097 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ 2098 \ 2099 /* compiler */ \ 2100 \ 2101 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 2102 "Number of compiler threads to run") \ 2103 \ 2104 product(intx, CompilationPolicyChoice, 0, \ 2105 "which compilation policy (0/1)") \ 2106 \ 2107 develop(bool, UseStackBanging, true, \ 2108 "use stack banging for stack overflow checks (required for " \ 2109 "proper StackOverflow handling; disable only to measure cost " \ 2110 "of stackbanging)") \ 2111 \ 2112 develop(bool, Use24BitFPMode, true, \ 2113 "Set 24-bit FPU mode on a per-compile basis ") \ 2114 \ 2115 develop(bool, Use24BitFP, true, \ 2116 "use FP instructions that produce 24-bit precise results") \ 2117 \ 2118 develop(bool, UseStrictFP, true, \ 2119 "use strict fp if modifier strictfp is set") \ 2120 \ 2121 develop(bool, GenerateSynchronizationCode, true, \ 2122 "generate locking/unlocking code for synchronized methods and " \ 2123 "monitors") \ 2124 \ 2125 develop(bool, GenerateCompilerNullChecks, true, \ 2126 "Generate explicit null checks for loads/stores/calls") \ 2127 \ 2128 develop(bool, GenerateRangeChecks, true, \ 2129 "Generate range checks for array accesses") \ 2130 \ 2131 develop_pd(bool, ImplicitNullChecks, \ 2132 "generate code for implicit null checks") \ 2133 \ 2134 product(bool, PrintSafepointStatistics, false, \ 2135 "print statistics about safepoint synchronization") \ 2136 \ 2137 product(intx, PrintSafepointStatisticsCount, 300, \ 2138 "total number of safepoint statistics collected " \ 2139 "before printing them out") \ 2140 \ 2141 product(intx, PrintSafepointStatisticsTimeout, -1, \ 2142 "print safepoint statistics only when safepoint takes" \ 2143 " more than PrintSafepointSatisticsTimeout in millis") \ 2144 \ 2145 develop(bool, InlineAccessors, true, \ 2146 "inline accessor methods (get/set)") \ 2147 \ 2148 product(bool, Inline, true, \ 2149 "enable inlining") \ 2150 \ 2151 product(bool, ClipInlining, true, \ 2152 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ 2153 \ 2154 develop(bool, UseCHA, true, \ 2155 "enable CHA") \ 2156 \ 2157 product(bool, UseTypeProfile, true, \ 2158 "Check interpreter profile for historically monomorphic calls") \ 2159 \ 2160 product(intx, TypeProfileMajorReceiverPercent, 90, \ 2161 "% of major receiver type to all profiled receivers") \ 2162 \ 2163 notproduct(bool, TimeCompiler, false, \ 2164 "time the compiler") \ 2165 \ 2166 notproduct(bool, TimeCompiler2, false, \ 2167 "detailed time the compiler (requires +TimeCompiler)") \ 2168 \ 2169 diagnostic(bool, PrintInlining, false, \ 2170 "prints inlining optimizations") \ 2171 \ 2172 diagnostic(bool, PrintIntrinsics, false, \ 2173 "prints attempted and successful inlining of intrinsics") \ 2174 \ 2175 diagnostic(ccstrlist, DisableIntrinsic, "", \ 2176 "do not expand intrinsics whose (internal) names appear here") \ 2177 \ 2178 develop(bool, StressReflectiveCode, false, \ 2179 "Use inexact types at allocations, etc., to test reflection") \ 2180 \ 2181 develop(bool, EagerInitialization, false, \ 2182 "Eagerly initialize classes if possible") \ 2183 \ 2184 product(bool, Tier1UpdateMethodData, trueInTiered, \ 2185 "Update methodDataOops in Tier1-generated code") \ 2186 \ 2187 develop(bool, TraceMethodReplacement, false, \ 2188 "Print when methods are replaced do to recompilation") \ 2189 \ 2190 develop(bool, PrintMethodFlushing, false, \ 2191 "print the nmethods being flushed") \ 2192 \ 2193 notproduct(bool, LogMultipleMutexLocking, false, \ 2194 "log locking and unlocking of mutexes (only if multiple locks " \ 2195 "are held)") \ 2196 \ 2197 develop(bool, UseRelocIndex, false, \ 2198 "use an index to speed random access to relocations") \ 2199 \ 2200 develop(bool, StressCodeBuffers, false, \ 2201 "Exercise code buffer expansion and other rare state changes") \ 2202 \ 2203 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 2204 "Generate extra debugging info for non-safepoints in nmethods") \ 2205 \ 2206 diagnostic(bool, DebugInlinedCalls, true, \ 2207 "If false, restricts profiled locations to the root method only") \ 2208 \ 2209 product(bool, PrintVMOptions, trueInDebug, \ 2210 "print VM flag settings") \ 2211 \ 2212 product(bool, IgnoreUnrecognizedVMOptions, false, \ 2213 "Ignore unrecognized VM options") \ 2214 \ 2215 diagnostic(bool, SerializeVMOutput, true, \ 2216 "Use a mutex to serialize output to tty and hotspot.log") \ 2217 \ 2218 diagnostic(bool, DisplayVMOutput, true, \ 2219 "Display all VM output on the tty, independently of LogVMOutput") \ 2220 \ 2221 diagnostic(bool, LogVMOutput, trueInDebug, \ 2222 "Save VM output to hotspot.log, or to LogFile") \ 2223 \ 2224 diagnostic(ccstr, LogFile, NULL, \ 2225 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ 2226 \ 2227 product(ccstr, ErrorFile, NULL, \ 2228 "If an error occurs, save the error data to this file " \ 2229 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 2230 \ 2231 product(bool, DisplayVMOutputToStderr, false, \ 2232 "If DisplayVMOutput is true, display all VM output to stderr") \ 2233 \ 2234 product(bool, DisplayVMOutputToStdout, false, \ 2235 "If DisplayVMOutput is true, display all VM output to stdout") \ 2236 \ 2237 product(bool, UseHeavyMonitors, false, \ 2238 "use heavyweight instead of lightweight Java monitors") \ 2239 \ 2240 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 2241 "print histogram of the symbol table") \ 2242 \ 2243 notproduct(bool, ExitVMOnVerifyError, false, \ 2244 "standard exit from VM if bytecode verify error " \ 2245 "(only in debug mode)") \ 2246 \ 2247 notproduct(ccstr, AbortVMOnException, NULL, \ 2248 "Call fatal if this exception is thrown. Example: " \ 2249 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 2250 \ 2251 develop(bool, DebugVtables, false, \ 2252 "add debugging code to vtable dispatch") \ 2253 \ 2254 develop(bool, PrintVtables, false, \ 2255 "print vtables when printing klass") \ 2256 \ 2257 notproduct(bool, PrintVtableStats, false, \ 2258 "print vtables stats at end of run") \ 2259 \ 2260 develop(bool, TraceCreateZombies, false, \ 2261 "trace creation of zombie nmethods") \ 2262 \ 2263 notproduct(bool, IgnoreLockingAssertions, false, \ 2264 "disable locking assertions (for speed)") \ 2265 \ 2266 notproduct(bool, VerifyLoopOptimizations, false, \ 2267 "verify major loop optimizations") \ 2268 \ 2269 product(bool, RangeCheckElimination, true, \ 2270 "Split loop iterations to eliminate range checks") \ 2271 \ 2272 develop_pd(bool, UncommonNullCast, \ 2273 "track occurrences of null in casts; adjust compiler tactics") \ 2274 \ 2275 develop(bool, TypeProfileCasts, true, \ 2276 "treat casts like calls for purposes of type profiling") \ 2277 \ 2278 develop(bool, MonomorphicArrayCheck, true, \ 2279 "Uncommon-trap array store checks that require full type check") \ 2280 \ 2281 develop(bool, DelayCompilationDuringStartup, true, \ 2282 "Delay invoking the compiler until main application class is " \ 2283 "loaded") \ 2284 \ 2285 develop(bool, CompileTheWorld, false, \ 2286 "Compile all methods in all classes in bootstrap class path " \ 2287 "(stress test)") \ 2288 \ 2289 develop(bool, CompileTheWorldPreloadClasses, true, \ 2290 "Preload all classes used by a class before start loading") \ 2291 \ 2292 notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \ 2293 "Compile all methods although class initializer failed") \ 2294 \ 2295 develop(bool, TraceIterativeGVN, false, \ 2296 "Print progress during Iterative Global Value Numbering") \ 2297 \ 2298 develop(bool, FillDelaySlots, true, \ 2299 "Fill delay slots (on SPARC only)") \ 2300 \ 2301 develop(bool, VerifyIterativeGVN, false, \ 2302 "Verify Def-Use modifications during sparse Iterative Global " \ 2303 "Value Numbering") \ 2304 \ 2305 notproduct(bool, TracePhaseCCP, false, \ 2306 "Print progress during Conditional Constant Propagation") \ 2307 \ 2308 develop(bool, TimeLivenessAnalysis, false, \ 2309 "Time computation of bytecode liveness analysis") \ 2310 \ 2311 develop(bool, TraceLivenessGen, false, \ 2312 "Trace the generation of liveness analysis information") \ 2313 \ 2314 notproduct(bool, TraceLivenessQuery, false, \ 2315 "Trace queries of liveness analysis information") \ 2316 \ 2317 notproduct(bool, CollectIndexSetStatistics, false, \ 2318 "Collect information about IndexSets") \ 2319 \ 2320 develop(bool, PrintDominators, false, \ 2321 "Print out dominator trees for GVN") \ 2322 \ 2323 develop(bool, UseLoopSafepoints, true, \ 2324 "Generate Safepoint nodes in every loop") \ 2325 \ 2326 notproduct(bool, TraceCISCSpill, false, \ 2327 "Trace allocators use of cisc spillable instructions") \ 2328 \ 2329 notproduct(bool, TraceSpilling, false, \ 2330 "Trace spilling") \ 2331 \ 2332 develop(bool, DeutschShiffmanExceptions, true, \ 2333 "Fast check to find exception handler for precisely typed " \ 2334 "exceptions") \ 2335 \ 2336 product(bool, SplitIfBlocks, true, \ 2337 "Clone compares and control flow through merge points to fold " \ 2338 "some branches") \ 2339 \ 2340 develop(intx, FastAllocateSizeLimit, 128*K, \ 2341 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 2342 "Inline allocations larger than this in doublewords must go slow")\ 2343 \ 2344 product(bool, AggressiveOpts, false, \ 2345 "Enable aggressive optimizations - see arguments.cpp") \ 2346 \ 2347 product(bool, UseStringCache, false, \ 2348 "Enable String cache capabilities on String.java") \ 2349 \ 2350 /* statistics */ \ 2351 develop(bool, UseVTune, false, \ 2352 "enable support for Intel's VTune profiler") \ 2353 \ 2354 develop(bool, CountCompiledCalls, false, \ 2355 "counts method invocations") \ 2356 \ 2357 notproduct(bool, CountRuntimeCalls, false, \ 2358 "counts VM runtime calls") \ 2359 \ 2360 develop(bool, CountJNICalls, false, \ 2361 "counts jni method invocations") \ 2362 \ 2363 notproduct(bool, CountJVMCalls, false, \ 2364 "counts jvm method invocations") \ 2365 \ 2366 notproduct(bool, CountRemovableExceptions, false, \ 2367 "count exceptions that could be replaced by branches due to " \ 2368 "inlining") \ 2369 \ 2370 notproduct(bool, ICMissHistogram, false, \ 2371 "produce histogram of IC misses") \ 2372 \ 2373 notproduct(bool, PrintClassStatistics, false, \ 2374 "prints class statistics at end of run") \ 2375 \ 2376 notproduct(bool, PrintMethodStatistics, false, \ 2377 "prints method statistics at end of run") \ 2378 \ 2379 /* interpreter */ \ 2380 develop(bool, ClearInterpreterLocals, false, \ 2381 "Always clear local variables of interpreter activations upon " \ 2382 "entry") \ 2383 \ 2384 product_pd(bool, RewriteBytecodes, \ 2385 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 2386 \ 2387 product_pd(bool, RewriteFrequentPairs, \ 2388 "Rewrite frequently used bytecode pairs into a single bytecode") \ 2389 \ 2390 diagnostic(bool, PrintInterpreter, false, \ 2391 "Prints the generated interpreter code") \ 2392 \ 2393 product(bool, UseInterpreter, true, \ 2394 "Use interpreter for non-compiled methods") \ 2395 \ 2396 develop(bool, UseFastSignatureHandlers, true, \ 2397 "Use fast signature handlers for native calls") \ 2398 \ 2399 develop(bool, UseV8InstrsOnly, false, \ 2400 "Use SPARC-V8 Compliant instruction subset") \ 2401 \ 2402 product(bool, UseNiagaraInstrs, false, \ 2403 "Use Niagara-efficient instruction subset") \ 2404 \ 2405 develop(bool, UseCASForSwap, false, \ 2406 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ 2407 \ 2408 product(bool, UseLoopCounter, true, \ 2409 "Increment invocation counter on backward branch") \ 2410 \ 2411 product(bool, UseFastEmptyMethods, true, \ 2412 "Use fast method entry code for empty methods") \ 2413 \ 2414 product(bool, UseFastAccessorMethods, true, \ 2415 "Use fast method entry code for accessor methods") \ 2416 \ 2417 product_pd(bool, UseOnStackReplacement, \ 2418 "Use on stack replacement, calls runtime if invoc. counter " \ 2419 "overflows in loop") \ 2420 \ 2421 notproduct(bool, TraceOnStackReplacement, false, \ 2422 "Trace on stack replacement") \ 2423 \ 2424 develop(bool, PoisonOSREntry, true, \ 2425 "Detect abnormal calls to OSR code") \ 2426 \ 2427 product_pd(bool, PreferInterpreterNativeStubs, \ 2428 "Use always interpreter stubs for native methods invoked via " \ 2429 "interpreter") \ 2430 \ 2431 develop(bool, CountBytecodes, false, \ 2432 "Count number of bytecodes executed") \ 2433 \ 2434 develop(bool, PrintBytecodeHistogram, false, \ 2435 "Print histogram of the executed bytecodes") \ 2436 \ 2437 develop(bool, PrintBytecodePairHistogram, false, \ 2438 "Print histogram of the executed bytecode pairs") \ 2439 \ 2440 diagnostic(bool, PrintSignatureHandlers, false, \ 2441 "Print code generated for native method signature handlers") \ 2442 \ 2443 develop(bool, VerifyOops, false, \ 2444 "Do plausibility checks for oops") \ 2445 \ 2446 develop(bool, CheckUnhandledOops, false, \ 2447 "Check for unhandled oops in VM code") \ 2448 \ 2449 develop(bool, VerifyJNIFields, trueInDebug, \ 2450 "Verify jfieldIDs for instance fields") \ 2451 \ 2452 notproduct(bool, VerifyJNIEnvThread, false, \ 2453 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 2454 "from JNI") \ 2455 \ 2456 develop(bool, VerifyFPU, false, \ 2457 "Verify FPU state (check for NaN's, etc.)") \ 2458 \ 2459 develop(bool, VerifyThread, false, \ 2460 "Watch the thread register for corruption (SPARC only)") \ 2461 \ 2462 develop(bool, VerifyActivationFrameSize, false, \ 2463 "Verify that activation frame didn't become smaller than its " \ 2464 "minimal size") \ 2465 \ 2466 develop(bool, TraceFrequencyInlining, false, \ 2467 "Trace frequency based inlining") \ 2468 \ 2469 notproduct(bool, TraceTypeProfile, false, \ 2470 "Trace type profile") \ 2471 \ 2472 develop_pd(bool, InlineIntrinsics, \ 2473 "Inline intrinsics that can be statically resolved") \ 2474 \ 2475 product_pd(bool, ProfileInterpreter, \ 2476 "Profile at the bytecode level during interpretation") \ 2477 \ 2478 develop_pd(bool, ProfileTraps, \ 2479 "Profile deoptimization traps at the bytecode level") \ 2480 \ 2481 product(intx, ProfileMaturityPercentage, 20, \ 2482 "number of method invocations/branches (expressed as % of " \ 2483 "CompileThreshold) before using the method's profile") \ 2484 \ 2485 develop(bool, PrintMethodData, false, \ 2486 "Print the results of +ProfileInterpreter at end of run") \ 2487 \ 2488 develop(bool, VerifyDataPointer, trueInDebug, \ 2489 "Verify the method data pointer during interpreter profiling") \ 2490 \ 2491 develop(bool, VerifyCompiledCode, false, \ 2492 "Include miscellaneous runtime verifications in nmethod code; " \ 2493 "off by default because it disturbs nmethod size heuristics.") \ 2494 \ 2495 \ 2496 /* compilation */ \ 2497 product(bool, UseCompiler, true, \ 2498 "use compilation") \ 2499 \ 2500 develop(bool, TraceCompilationPolicy, false, \ 2501 "Trace compilation policy") \ 2502 \ 2503 develop(bool, TimeCompilationPolicy, false, \ 2504 "Time the compilation policy") \ 2505 \ 2506 product(bool, UseCounterDecay, true, \ 2507 "adjust recompilation counters") \ 2508 \ 2509 develop(intx, CounterHalfLifeTime, 30, \ 2510 "half-life time of invocation counters (in secs)") \ 2511 \ 2512 develop(intx, CounterDecayMinIntervalLength, 500, \ 2513 "Min. ms. between invocation of CounterDecay") \ 2514 \ 2515 product(bool, AlwaysCompileLoopMethods, false, \ 2516 "when using recompilation, never interpret methods " \ 2517 "containing loops") \ 2518 \ 2519 product(bool, DontCompileHugeMethods, true, \ 2520 "don't compile methods > HugeMethodLimit") \ 2521 \ 2522 /* Bytecode escape analysis estimation. */ \ 2523 product(bool, EstimateArgEscape, true, \ 2524 "Analyze bytecodes to estimate escape state of arguments") \ 2525 \ 2526 product(intx, BCEATraceLevel, 0, \ 2527 "How much tracing to do of bytecode escape analysis estimates") \ 2528 \ 2529 product(intx, MaxBCEAEstimateLevel, 5, \ 2530 "Maximum number of nested calls that are analyzed by BC EA.") \ 2531 \ 2532 product(intx, MaxBCEAEstimateSize, 150, \ 2533 "Maximum bytecode size of a method to be analyzed by BC EA.") \ 2534 \ 2535 product(intx, AllocatePrefetchStyle, 1, \ 2536 "0 = no prefetch, " \ 2537 "1 = prefetch instructions for each allocation, " \ 2538 "2 = use TLAB watermark to gate allocation prefetch") \ 2539 \ 2540 product(intx, AllocatePrefetchDistance, -1, \ 2541 "Distance to prefetch ahead of allocation pointer") \ 2542 \ 2543 product(intx, AllocatePrefetchLines, 1, \ 2544 "Number of lines to prefetch ahead of allocation pointer") \ 2545 \ 2546 product(intx, AllocatePrefetchStepSize, 16, \ 2547 "Step size in bytes of sequential prefetch instructions") \ 2548 \ 2549 product(intx, AllocatePrefetchInstr, 0, \ 2550 "Prefetch instruction to prefetch ahead of allocation pointer") \ 2551 \ 2552 product(intx, ReadPrefetchInstr, 0, \ 2553 "Prefetch instruction to prefetch ahead") \ 2554 \ 2555 /* deoptimization */ \ 2556 develop(bool, TraceDeoptimization, false, \ 2557 "Trace deoptimization") \ 2558 \ 2559 develop(bool, DebugDeoptimization, false, \ 2560 "Tracing various information while debugging deoptimization") \ 2561 \ 2562 product(intx, SelfDestructTimer, 0, \ 2563 "Will cause VM to terminate after a given time (in minutes) " \ 2564 "(0 means off)") \ 2565 \ 2566 product(intx, MaxJavaStackTraceDepth, 1024, \ 2567 "Max. no. of lines in the stack trace for Java exceptions " \ 2568 "(0 means all)") \ 2569 \ 2570 develop(intx, GuaranteedSafepointInterval, 1000, \ 2571 "Guarantee a safepoint (at least) every so many milliseconds " \ 2572 "(0 means none)") \ 2573 \ 2574 product(intx, SafepointTimeoutDelay, 10000, \ 2575 "Delay in milliseconds for option SafepointTimeout") \ 2576 \ 2577 product(intx, NmethodSweepFraction, 4, \ 2578 "Number of invocations of sweeper to cover all nmethods") \ 2579 \ 2580 notproduct(intx, MemProfilingInterval, 500, \ 2581 "Time between each invocation of the MemProfiler") \ 2582 \ 2583 develop(intx, MallocCatchPtr, -1, \ 2584 "Hit breakpoint when mallocing/freeing this pointer") \ 2585 \ 2586 notproduct(intx, AssertRepeat, 1, \ 2587 "number of times to evaluate expression in assert " \ 2588 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ 2589 \ 2590 notproduct(ccstrlist, SuppressErrorAt, "", \ 2591 "List of assertions (file:line) to muzzle") \ 2592 \ 2593 notproduct(uintx, HandleAllocationLimit, 1024, \ 2594 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ 2595 "is used") \ 2596 \ 2597 develop(uintx, TotalHandleAllocationLimit, 1024, \ 2598 "Threshold for total handle allocation when " \ 2599 "+TraceHandleAllocation is used") \ 2600 \ 2601 develop(intx, StackPrintLimit, 100, \ 2602 "number of stack frames to print in VM-level stack dump") \ 2603 \ 2604 notproduct(intx, MaxElementPrintSize, 256, \ 2605 "maximum number of elements to print") \ 2606 \ 2607 notproduct(intx, MaxSubklassPrintSize, 4, \ 2608 "maximum number of subklasses to print when printing klass") \ 2609 \ 2610 develop(intx, MaxInlineLevel, 9, \ 2611 "maximum number of nested calls that are inlined") \ 2612 \ 2613 develop(intx, MaxRecursiveInlineLevel, 1, \ 2614 "maximum number of nested recursive calls that are inlined") \ 2615 \ 2616 product(intx, InlineSmallCode, 1000, \ 2617 "Only inline already compiled methods if their code size is " \ 2618 "less than this") \ 2619 \ 2620 product(intx, MaxInlineSize, 35, \ 2621 "maximum bytecode size of a method to be inlined") \ 2622 \ 2623 product_pd(intx, FreqInlineSize, \ 2624 "maximum bytecode size of a frequent method to be inlined") \ 2625 \ 2626 develop(intx, MaxTrivialSize, 6, \ 2627 "maximum bytecode size of a trivial method to be inlined") \ 2628 \ 2629 develop(intx, MinInliningThreshold, 250, \ 2630 "min. invocation count a method needs to have to be inlined") \ 2631 \ 2632 develop(intx, AlignEntryCode, 4, \ 2633 "aligns entry code to specified value (in bytes)") \ 2634 \ 2635 develop(intx, MethodHistogramCutoff, 100, \ 2636 "cutoff value for method invoc. histogram (+CountCalls)") \ 2637 \ 2638 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ 2639 "# of interpreted methods to show in profile") \ 2640 \ 2641 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ 2642 "# of compiled methods to show in profile") \ 2643 \ 2644 develop(intx, ProfilerNumberOfStubMethods, 25, \ 2645 "# of stub methods to show in profile") \ 2646 \ 2647 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 2648 "# of runtime stub nodes to show in profile") \ 2649 \ 2650 product(intx, ProfileIntervalsTicks, 100, \ 2651 "# of ticks between printing of interval profile " \ 2652 "(+ProfileIntervals)") \ 2653 \ 2654 notproduct(intx, ScavengeALotInterval, 1, \ 2655 "Interval between which scavenge will occur with +ScavengeALot") \ 2656 \ 2657 notproduct(intx, FullGCALotInterval, 1, \ 2658 "Interval between which full gc will occur with +FullGCALot") \ 2659 \ 2660 notproduct(intx, FullGCALotStart, 0, \ 2661 "For which invocation to start FullGCAlot") \ 2662 \ 2663 notproduct(intx, FullGCALotDummies, 32*K, \ 2664 "Dummy object allocated with +FullGCALot, forcing all objects " \ 2665 "to move") \ 2666 \ 2667 develop(intx, DontYieldALotInterval, 10, \ 2668 "Interval between which yields will be dropped (milliseconds)") \ 2669 \ 2670 develop(intx, MinSleepInterval, 1, \ 2671 "Minimum sleep() interval (milliseconds) when " \ 2672 "ConvertSleepToYield is off (used for SOLARIS)") \ 2673 \ 2674 product(intx, EventLogLength, 2000, \ 2675 "maximum nof events in event log") \ 2676 \ 2677 develop(intx, ProfilerPCTickThreshold, 15, \ 2678 "Number of ticks in a PC buckets to be a hotspot") \ 2679 \ 2680 notproduct(intx, DeoptimizeALotInterval, 5, \ 2681 "Number of exits until DeoptimizeALot kicks in") \ 2682 \ 2683 notproduct(intx, ZombieALotInterval, 5, \ 2684 "Number of exits until ZombieALot kicks in") \ 2685 \ 2686 develop(bool, StressNonEntrant, false, \ 2687 "Mark nmethods non-entrant at registration") \ 2688 \ 2689 diagnostic(intx, MallocVerifyInterval, 0, \ 2690 "if non-zero, verify C heap after every N calls to " \ 2691 "malloc/realloc/free") \ 2692 \ 2693 diagnostic(intx, MallocVerifyStart, 0, \ 2694 "if non-zero, start verifying C heap after Nth call to " \ 2695 "malloc/realloc/free") \ 2696 \ 2697 product(intx, TypeProfileWidth, 2, \ 2698 "number of receiver types to record in call/cast profile") \ 2699 \ 2700 develop(intx, BciProfileWidth, 2, \ 2701 "number of return bci's to record in ret profile") \ 2702 \ 2703 product(intx, PerMethodRecompilationCutoff, 400, \ 2704 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 2705 \ 2706 product(intx, PerBytecodeRecompilationCutoff, 100, \ 2707 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 2708 \ 2709 product(intx, PerMethodTrapLimit, 100, \ 2710 "Limit on traps (of one kind) in a method (includes inlines)") \ 2711 \ 2712 product(intx, PerBytecodeTrapLimit, 4, \ 2713 "Limit on traps (of one kind) at a particular BCI") \ 2714 \ 2715 develop(intx, FreqCountInvocations, 1, \ 2716 "Scaling factor for branch frequencies (deprecated)") \ 2717 \ 2718 develop(intx, InlineFrequencyRatio, 20, \ 2719 "Ratio of call site execution to caller method invocation") \ 2720 \ 2721 develop_pd(intx, InlineFrequencyCount, \ 2722 "Count of call site execution necessary to trigger frequent " \ 2723 "inlining") \ 2724 \ 2725 develop(intx, InlineThrowCount, 50, \ 2726 "Force inlining of interpreted methods that throw this often") \ 2727 \ 2728 develop(intx, InlineThrowMaxSize, 200, \ 2729 "Force inlining of throwing methods smaller than this") \ 2730 \ 2731 product(intx, AliasLevel, 3, \ 2732 "0 for no aliasing, 1 for oop/field/static/array split, " \ 2733 "2 for class split, 3 for unique instances") \ 2734 \ 2735 develop(bool, VerifyAliases, false, \ 2736 "perform extra checks on the results of alias analysis") \ 2737 \ 2738 develop(intx, ProfilerNodeSize, 1024, \ 2739 "Size in K to allocate for the Profile Nodes of each thread") \ 2740 \ 2741 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ 2742 "Number of times to spin wait on a v8 atomic operation lock") \ 2743 \ 2744 product(intx, ReadSpinIterations, 100, \ 2745 "Number of read attempts before a yield (spin inner loop)") \ 2746 \ 2747 product_pd(intx, PreInflateSpin, \ 2748 "Number of times to spin wait before inflation") \ 2749 \ 2750 product(intx, PreBlockSpin, 10, \ 2751 "Number of times to spin in an inflated lock before going to " \ 2752 "an OS lock") \ 2753 \ 2754 /* gc parameters */ \ 2755 product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \ 2756 "Default maximum size for object heap (in bytes)") \ 2757 \ 2758 product_pd(uintx, NewSize, \ 2759 "Default size of new generation (in bytes)") \ 2760 \ 2761 product(uintx, MaxNewSize, max_uintx, \ 2762 "Maximum size of new generation (in bytes)") \ 2763 \ 2764 product(uintx, PretenureSizeThreshold, 0, \ 2765 "Max size in bytes of objects allocated in DefNew generation") \ 2766 \ 2767 product_pd(uintx, TLABSize, \ 2768 "Default (or starting) size of TLAB (in bytes)") \ 2769 \ 2770 product(uintx, MinTLABSize, 2*K, \ 2771 "Minimum allowed TLAB size (in bytes)") \ 2772 \ 2773 product(uintx, TLABAllocationWeight, 35, \ 2774 "Allocation averaging weight") \ 2775 \ 2776 product(uintx, TLABWasteTargetPercent, 1, \ 2777 "Percentage of Eden that can be wasted") \ 2778 \ 2779 product(uintx, TLABRefillWasteFraction, 64, \ 2780 "Max TLAB waste at a refill (internal fragmentation)") \ 2781 \ 2782 product(uintx, TLABWasteIncrement, 4, \ 2783 "Increment allowed waste at slow allocation") \ 2784 \ 2785 product_pd(intx, SurvivorRatio, \ 2786 "Ratio of eden/survivor space size") \ 2787 \ 2788 product_pd(intx, NewRatio, \ 2789 "Ratio of new/old generation sizes") \ 2790 \ 2791 product(uintx, MaxLiveObjectEvacuationRatio, 100, \ 2792 "Max percent of eden objects that will be live at scavenge") \ 2793 \ 2794 product_pd(uintx, NewSizeThreadIncrease, \ 2795 "Additional size added to desired new generation size per " \ 2796 "non-daemon thread (in bytes)") \ 2797 \ 2798 product(uintx, OldSize, ScaleForWordSize(4096*K), \ 2799 "Default size of tenured generation (in bytes)") \ 2800 \ 2801 product_pd(uintx, PermSize, \ 2802 "Default size of permanent generation (in bytes)") \ 2803 \ 2804 product_pd(uintx, MaxPermSize, \ 2805 "Maximum size of permanent generation (in bytes)") \ 2806 \ 2807 product(uintx, MinHeapFreeRatio, 40, \ 2808 "Min percentage of heap free after GC to avoid expansion") \ 2809 \ 2810 product(uintx, MaxHeapFreeRatio, 70, \ 2811 "Max percentage of heap free after GC to avoid shrinking") \ 2812 \ 2813 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 2814 "Number of milliseconds per MB of free space in the heap") \ 2815 \ 2816 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 2817 "Min change in heap space due to GC (in bytes)") \ 2818 \ 2819 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ 2820 "Min expansion of permanent heap (in bytes)") \ 2821 \ 2822 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ 2823 "Max expansion of permanent heap without full GC (in bytes)") \ 2824 \ 2825 product(intx, QueuedAllocationWarningCount, 0, \ 2826 "Number of times an allocation that queues behind a GC " \ 2827 "will retry before printing a warning") \ 2828 \ 2829 diagnostic(uintx, VerifyGCStartAt, 0, \ 2830 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 2831 \ 2832 diagnostic(intx, VerifyGCLevel, 0, \ 2833 "Generation level at which to start +VerifyBefore/AfterGC") \ 2834 \ 2835 develop(uintx, ExitAfterGCNum, 0, \ 2836 "If non-zero, exit after this GC.") \ 2837 \ 2838 product(intx, MaxTenuringThreshold, 15, \ 2839 "Maximum value for tenuring threshold") \ 2840 \ 2841 product(intx, InitialTenuringThreshold, 7, \ 2842 "Initial value for tenuring threshold") \ 2843 \ 2844 product(intx, TargetSurvivorRatio, 50, \ 2845 "Desired percentage of survivor space used after scavenge") \ 2846 \ 2847 product(uintx, MarkSweepDeadRatio, 5, \ 2848 "Percentage (0-100) of the old gen allowed as dead wood." \ 2849 "Serial mark sweep treats this as both the min and max value." \ 2850 "CMS uses this value only if it falls back to mark sweep." \ 2851 "Par compact uses a variable scale based on the density of the" \ 2852 "generation and treats this as the max value when the heap is" \ 2853 "either completely full or completely empty. Par compact also" \ 2854 "has a smaller default value; see arguments.cpp.") \ 2855 \ 2856 product(uintx, PermMarkSweepDeadRatio, 20, \ 2857 "Percentage (0-100) of the perm gen allowed as dead wood." \ 2858 "See MarkSweepDeadRatio for collector-specific comments.") \ 2859 \ 2860 product(intx, MarkSweepAlwaysCompactCount, 4, \ 2861 "How often should we fully compact the heap (ignoring the dead " \ 2862 "space parameters)") \ 2863 \ 2864 product(intx, PrintCMSStatistics, 0, \ 2865 "Statistics for CMS") \ 2866 \ 2867 product(bool, PrintCMSInitiationStatistics, false, \ 2868 "Statistics for initiating a CMS collection") \ 2869 \ 2870 product(intx, PrintFLSStatistics, 0, \ 2871 "Statistics for CMS' FreeListSpace") \ 2872 \ 2873 product(intx, PrintFLSCensus, 0, \ 2874 "Census for CMS' FreeListSpace") \ 2875 \ 2876 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ 2877 "Delay in ms between expansion and allocation") \ 2878 \ 2879 product(intx, DeferThrSuspendLoopCount, 4000, \ 2880 "(Unstable) Number of times to iterate in safepoint loop " \ 2881 " before blocking VM threads ") \ 2882 \ 2883 product(intx, DeferPollingPageLoopCount, -1, \ 2884 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ 2885 "before changing safepoint polling page to RO ") \ 2886 \ 2887 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ 2888 \ 2889 product(bool, UseDepthFirstScavengeOrder, true, \ 2890 "true: the scavenge order will be depth-first, " \ 2891 "false: the scavenge order will be breadth-first") \ 2892 \ 2893 product(bool, PSChunkLargeArrays, true, \ 2894 "true: process large arrays in chunks") \ 2895 \ 2896 product(uintx, GCDrainStackTargetSize, 64, \ 2897 "how many entries we'll try to leave on the stack during " \ 2898 "parallel GC") \ 2899 \ 2900 product(intx, DCQBarrierQueueBufferSize, 256, \ 2901 "Number of elements in a dirty card queue buffer") \ 2902 \ 2903 product(intx, DCQBarrierProcessCompletedThreshold, 5, \ 2904 "Number of completed dirty card buffers to trigger processing.") \ 2905 \ 2906 /* stack parameters */ \ 2907 product_pd(intx, StackYellowPages, \ 2908 "Number of yellow zone (recoverable overflows) pages") \ 2909 \ 2910 product_pd(intx, StackRedPages, \ 2911 "Number of red zone (unrecoverable overflows) pages") \ 2912 \ 2913 product_pd(intx, StackShadowPages, \ 2914 "Number of shadow zone (for overflow checking) pages" \ 2915 " this should exceed the depth of the VM and native call stack") \ 2916 \ 2917 product_pd(intx, ThreadStackSize, \ 2918 "Thread Stack Size (in Kbytes)") \ 2919 \ 2920 product_pd(intx, VMThreadStackSize, \ 2921 "Non-Java Thread Stack Size (in Kbytes)") \ 2922 \ 2923 product_pd(intx, CompilerThreadStackSize, \ 2924 "Compiler Thread Stack Size (in Kbytes)") \ 2925 \ 2926 develop_pd(uintx, JVMInvokeMethodSlack, \ 2927 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 2928 \ 2929 product(uintx, ThreadSafetyMargin, 50*M, \ 2930 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ 2931 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ 2932 "disable this feature") \ 2933 \ 2934 /* code cache parameters */ \ 2935 develop(uintx, CodeCacheSegmentSize, 64, \ 2936 "Code cache segment size (in bytes) - smallest unit of " \ 2937 "allocation") \ 2938 \ 2939 develop_pd(intx, CodeEntryAlignment, \ 2940 "Code entry alignment for generated code (in bytes)") \ 2941 \ 2942 product_pd(uintx, InitialCodeCacheSize, \ 2943 "Initial code cache size (in bytes)") \ 2944 \ 2945 product_pd(uintx, ReservedCodeCacheSize, \ 2946 "Reserved code cache size (in bytes) - maximum code cache size") \ 2947 \ 2948 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ 2949 "When less than X space left, we stop compiling.") \ 2950 \ 2951 product_pd(uintx, CodeCacheExpansionSize, \ 2952 "Code cache expansion size (in bytes)") \ 2953 \ 2954 develop_pd(uintx, CodeCacheMinBlockLength, \ 2955 "Minimum number of segments in a code cache block.") \ 2956 \ 2957 notproduct(bool, ExitOnFullCodeCache, false, \ 2958 "Exit the VM if we fill the code cache.") \ 2959 \ 2960 /* interpreter debugging */ \ 2961 develop(intx, BinarySwitchThreshold, 5, \ 2962 "Minimal number of lookupswitch entries for rewriting to binary " \ 2963 "switch") \ 2964 \ 2965 develop(intx, StopInterpreterAt, 0, \ 2966 "Stops interpreter execution at specified bytecode number") \ 2967 \ 2968 develop(intx, TraceBytecodesAt, 0, \ 2969 "Traces bytecodes starting with specified bytecode number") \ 2970 \ 2971 /* compiler interface */ \ 2972 develop(intx, CIStart, 0, \ 2973 "the id of the first compilation to permit") \ 2974 \ 2975 develop(intx, CIStop, -1, \ 2976 "the id of the last compilation to permit") \ 2977 \ 2978 develop(intx, CIStartOSR, 0, \ 2979 "the id of the first osr compilation to permit " \ 2980 "(CICountOSR must be on)") \ 2981 \ 2982 develop(intx, CIStopOSR, -1, \ 2983 "the id of the last osr compilation to permit " \ 2984 "(CICountOSR must be on)") \ 2985 \ 2986 develop(intx, CIBreakAtOSR, -1, \ 2987 "id of osr compilation to break at") \ 2988 \ 2989 develop(intx, CIBreakAt, -1, \ 2990 "id of compilation to break at") \ 2991 \ 2992 product(ccstrlist, CompileOnly, "", \ 2993 "List of methods (pkg/class.name) to restrict compilation to") \ 2994 \ 2995 product(ccstr, CompileCommandFile, NULL, \ 2996 "Read compiler commands from this file [.hotspot_compiler]") \ 2997 \ 2998 product(ccstrlist, CompileCommand, "", \ 2999 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 3000 \ 3001 product(bool, CICompilerCountPerCPU, false, \ 3002 "1 compiler thread for log(N CPUs)") \ 3003 \ 3004 develop(intx, CIFireOOMAt, -1, \ 3005 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 3006 "(non-negative value throws OOM after this many CI accesses " \ 3007 "in each compile)") \ 3008 \ 3009 develop(intx, CIFireOOMAtDelay, -1, \ 3010 "Wait for this many CI accesses to occur in all compiles before " \ 3011 "beginning to throw OutOfMemoryErrors in each compile") \ 3012 \ 3013 /* Priorities */ \ 3014 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 3015 \ 3016 product(intx, ThreadPriorityPolicy, 0, \ 3017 "0 : Normal. "\ 3018 " VM chooses priorities that are appropriate for normal "\ 3019 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 3020 " to normal native priority. Java priorities below NORM_PRIORITY"\ 3021 " map to lower native priority values. On Windows applications"\ 3022 " are allowed to use higher native priorities. However, with "\ 3023 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ 3024 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ 3025 " interfere with system threads. On Linux thread priorities "\ 3026 " are ignored because the OS does not support static priority "\ 3027 " in SCHED_OTHER scheduling class which is the only choice for"\ 3028 " non-root, non-realtime applications. "\ 3029 "1 : Aggressive. "\ 3030 " Java thread priorities map over to the entire range of "\ 3031 " native thread priorities. Higher Java thread priorities map "\ 3032 " to higher native thread priorities. This policy should be "\ 3033 " used with care, as sometimes it can cause performance "\ 3034 " degradation in the application and/or the entire system. On "\ 3035 " Linux this policy requires root privilege.") \ 3036 \ 3037 product(bool, ThreadPriorityVerbose, false, \ 3038 "print priority changes") \ 3039 \ 3040 product(intx, DefaultThreadPriority, -1, \ 3041 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ 3042 \ 3043 product(intx, CompilerThreadPriority, -1, \ 3044 "what priority should compiler threads run at (-1 means no change)") \ 3045 \ 3046 product(intx, VMThreadPriority, -1, \ 3047 "what priority should VM threads run at (-1 means no change)") \ 3048 \ 3049 product(bool, CompilerThreadHintNoPreempt, true, \ 3050 "(Solaris only) Give compiler threads an extra quanta") \ 3051 \ 3052 product(bool, VMThreadHintNoPreempt, false, \ 3053 "(Solaris only) Give VM thread an extra quanta") \ 3054 \ 3055 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3056 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3057 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3058 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3059 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3060 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3061 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3062 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3063 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ 3064 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ 3065 \ 3066 /* compiler debugging */ \ 3067 notproduct(intx, CompileTheWorldStartAt, 1, \ 3068 "First class to consider when using +CompileTheWorld") \ 3069 \ 3070 notproduct(intx, CompileTheWorldStopAt, max_jint, \ 3071 "Last class to consider when using +CompileTheWorld") \ 3072 \ 3073 develop(intx, NewCodeParameter, 0, \ 3074 "Testing Only: Create a dedicated integer parameter before " \ 3075 "putback") \ 3076 \ 3077 /* new oopmap storage allocation */ \ 3078 develop(intx, MinOopMapAllocation, 8, \ 3079 "Minimum number of OopMap entries in an OopMapSet") \ 3080 \ 3081 /* Background Compilation */ \ 3082 develop(intx, LongCompileThreshold, 50, \ 3083 "Used with +TraceLongCompiles") \ 3084 \ 3085 product(intx, StarvationMonitorInterval, 200, \ 3086 "Pause between each check in ms") \ 3087 \ 3088 /* recompilation */ \ 3089 product_pd(intx, CompileThreshold, \ 3090 "number of interpreted method invocations before (re-)compiling") \ 3091 \ 3092 product_pd(intx, BackEdgeThreshold, \ 3093 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ 3094 \ 3095 product(intx, Tier1BytecodeLimit, 10, \ 3096 "Must have at least this many bytecodes before tier1" \ 3097 "invocation counters are used") \ 3098 \ 3099 product_pd(intx, Tier2CompileThreshold, \ 3100 "threshold at which a tier 2 compilation is invoked") \ 3101 \ 3102 product_pd(intx, Tier2BackEdgeThreshold, \ 3103 "Back edge threshold at which a tier 2 compilation is invoked") \ 3104 \ 3105 product_pd(intx, Tier3CompileThreshold, \ 3106 "threshold at which a tier 3 compilation is invoked") \ 3107 \ 3108 product_pd(intx, Tier3BackEdgeThreshold, \ 3109 "Back edge threshold at which a tier 3 compilation is invoked") \ 3110 \ 3111 product_pd(intx, Tier4CompileThreshold, \ 3112 "threshold at which a tier 4 compilation is invoked") \ 3113 \ 3114 product_pd(intx, Tier4BackEdgeThreshold, \ 3115 "Back edge threshold at which a tier 4 compilation is invoked") \ 3116 \ 3117 product_pd(bool, TieredCompilation, \ 3118 "Enable two-tier compilation") \ 3119 \ 3120 product(bool, StressTieredRuntime, false, \ 3121 "Alternate client and server compiler on compile requests") \ 3122 \ 3123 product_pd(intx, OnStackReplacePercentage, \ 3124 "NON_TIERED number of method invocations/branches (expressed as %"\ 3125 "of CompileThreshold) before (re-)compiling OSR code") \ 3126 \ 3127 product(intx, InterpreterProfilePercentage, 33, \ 3128 "NON_TIERED number of method invocations/branches (expressed as %"\ 3129 "of CompileThreshold) before profiling in the interpreter") \ 3130 \ 3131 develop(intx, MaxRecompilationSearchLength, 10, \ 3132 "max. # frames to inspect searching for recompilee") \ 3133 \ 3134 develop(intx, MaxInterpretedSearchLength, 3, \ 3135 "max. # interp. frames to skip when searching for recompilee") \ 3136 \ 3137 develop(intx, DesiredMethodLimit, 8000, \ 3138 "desired max. method size (in bytecodes) after inlining") \ 3139 \ 3140 develop(intx, HugeMethodLimit, 8000, \ 3141 "don't compile methods larger than this if " \ 3142 "+DontCompileHugeMethods") \ 3143 \ 3144 /* New JDK 1.4 reflection implementation */ \ 3145 \ 3146 develop(bool, UseNewReflection, true, \ 3147 "Temporary flag for transition to reflection based on dynamic " \ 3148 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ 3149 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ 3150 "changes were needed") \ 3151 \ 3152 develop(bool, VerifyReflectionBytecodes, false, \ 3153 "Force verification of 1.4 reflection bytecodes. Does not work " \ 3154 "in situations like that described in 4486457 or for " \ 3155 "constructors generated for serialization, so can not be enabled "\ 3156 "in product.") \ 3157 \ 3158 product(bool, ReflectionWrapResolutionErrors, true, \ 3159 "Temporary flag for transition to AbstractMethodError wrapped " \ 3160 "in InvocationTargetException. See 6531596") \ 3161 \ 3162 \ 3163 develop(intx, FastSuperclassLimit, 8, \ 3164 "Depth of hardwired instanceof accelerator array") \ 3165 \ 3166 /* Properties for Java libraries */ \ 3167 \ 3168 product(intx, MaxDirectMemorySize, -1, \ 3169 "Maximum total size of NIO direct-buffer allocations") \ 3170 \ 3171 /* temporary developer defined flags */ \ 3172 \ 3173 diagnostic(bool, UseNewCode, false, \ 3174 "Testing Only: Use the new version while testing") \ 3175 \ 3176 diagnostic(bool, UseNewCode2, false, \ 3177 "Testing Only: Use the new version while testing") \ 3178 \ 3179 diagnostic(bool, UseNewCode3, false, \ 3180 "Testing Only: Use the new version while testing") \ 3181 \ 3182 /* flags for performance data collection */ \ 3183 \ 3184 product(bool, UsePerfData, true, \ 3185 "Flag to disable jvmstat instrumentation for performance testing" \ 3186 "and problem isolation purposes.") \ 3187 \ 3188 product(bool, PerfDataSaveToFile, false, \ 3189 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 3190 \ 3191 product(ccstr, PerfDataSaveFile, NULL, \ 3192 "Save PerfData memory to the specified absolute pathname," \ 3193 "%p in the file name if present will be replaced by pid") \ 3194 \ 3195 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ 3196 "Data sampling interval in milliseconds") \ 3197 \ 3198 develop(bool, PerfTraceDataCreation, false, \ 3199 "Trace creation of Performance Data Entries") \ 3200 \ 3201 develop(bool, PerfTraceMemOps, false, \ 3202 "Trace PerfMemory create/attach/detach calls") \ 3203 \ 3204 product(bool, PerfDisableSharedMem, false, \ 3205 "Store performance data in standard memory") \ 3206 \ 3207 product(intx, PerfDataMemorySize, 32*K, \ 3208 "Size of performance data memory region. Will be rounded " \ 3209 "up to a multiple of the native os page size.") \ 3210 \ 3211 product(intx, PerfMaxStringConstLength, 1024, \ 3212 "Maximum PerfStringConstant string length before truncation") \ 3213 \ 3214 product(bool, PerfAllowAtExitRegistration, false, \ 3215 "Allow registration of atexit() methods") \ 3216 \ 3217 product(bool, PerfBypassFileSystemCheck, false, \ 3218 "Bypass Win32 file system criteria checks (Windows Only)") \ 3219 \ 3220 product(intx, UnguardOnExecutionViolation, 0, \ 3221 "Unguard page and retry on no-execute fault (Win32 only)" \ 3222 "0=off, 1=conservative, 2=aggressive") \ 3223 \ 3224 /* Serviceability Support */ \ 3225 \ 3226 product(bool, ManagementServer, false, \ 3227 "Create JMX Management Server") \ 3228 \ 3229 product(bool, DisableAttachMechanism, false, \ 3230 "Disable mechanism that allows tools to attach to this VM") \ 3231 \ 3232 product(bool, StartAttachListener, false, \ 3233 "Always start Attach Listener at VM startup") \ 3234 \ 3235 manageable(bool, PrintConcurrentLocks, false, \ 3236 "Print java.util.concurrent locks in thread dump") \ 3237 \ 3238 /* Shared spaces */ \ 3239 \ 3240 product(bool, UseSharedSpaces, true, \ 3241 "Use shared spaces in the permanent generation") \ 3242 \ 3243 product(bool, RequireSharedSpaces, false, \ 3244 "Require shared spaces in the permanent generation") \ 3245 \ 3246 product(bool, ForceSharedSpaces, false, \ 3247 "Require shared spaces in the permanent generation") \ 3248 \ 3249 product(bool, DumpSharedSpaces, false, \ 3250 "Special mode: JVM reads a class list, loads classes, builds " \ 3251 "shared spaces, and dumps the shared spaces to a file to be " \ 3252 "used in future JVM runs.") \ 3253 \ 3254 product(bool, PrintSharedSpaces, false, \ 3255 "Print usage of shared spaces") \ 3256 \ 3257 product(uintx, SharedDummyBlockSize, 512*M, \ 3258 "Size of dummy block used to shift heap addresses (in bytes)") \ 3259 \ 3260 product(uintx, SharedReadWriteSize, 12*M, \ 3261 "Size of read-write space in permanent generation (in bytes)") \ 3262 \ 3263 product(uintx, SharedReadOnlySize, 8*M, \ 3264 "Size of read-only space in permanent generation (in bytes)") \ 3265 \ 3266 product(uintx, SharedMiscDataSize, 4*M, \ 3267 "Size of the shared data area adjacent to the heap (in bytes)") \ 3268 \ 3269 product(uintx, SharedMiscCodeSize, 4*M, \ 3270 "Size of the shared code area adjacent to the heap (in bytes)") \ 3271 \ 3272 diagnostic(bool, SharedOptimizeColdStart, true, \ 3273 "At dump time, order shared objects to achieve better " \ 3274 "cold startup time.") \ 3275 \ 3276 develop(intx, SharedOptimizeColdStartPolicy, 2, \ 3277 "Reordering policy for SharedOptimizeColdStart " \ 3278 "0=favor classload-time locality, 1=balanced, " \ 3279 "2=favor runtime locality") \ 3280 \ 3281 diagnostic(bool, SharedSkipVerify, false, \ 3282 "Skip assert() and verify() which page-in unwanted shared " \ 3283 "objects. ") \ 3284 \ 3285 product(bool, AnonymousClasses, false, \ 3286 "support sun.misc.Unsafe.defineAnonymousClass") \ 3287 \ 3288 product(bool, TaggedStackInterpreter, false, \ 3289 "Insert tags in interpreter execution stack for oopmap generaion")\ 3290 \ 3291 diagnostic(bool, PauseAtStartup, false, \ 3292 "Causes the VM to pause at startup time and wait for the pause " \ 3293 "file to be removed (default: ./vm.paused.<pid>)") \ 3294 \ 3295 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 3296 "The file to create and for whose removal to await when pausing " \ 3297 "at startup. (default: ./vm.paused.<pid>)") \ 3298 \ 3299 product(bool, ExtendedDTraceProbes, false, \ 3300 "Enable performance-impacting dtrace probes") \ 3301 \ 3302 product(bool, DTraceMethodProbes, false, \ 3303 "Enable dtrace probes for method-entry and method-exit") \ 3304 \ 3305 product(bool, DTraceAllocProbes, false, \ 3306 "Enable dtrace probes for object allocation") \ 3307 \ 3308 product(bool, DTraceMonitorProbes, false, \ 3309 "Enable dtrace probes for monitor events") \ 3310 \ 3311 product(bool, RelaxAccessControlCheck, false, \ 3312 "Relax the access control checks in the verifier") \ 3313 \ 3314 diagnostic(bool, PrintDTraceDOF, false, \ 3315 "Print the DTrace DOF passed to the system for JSDT probes") \ 3316 \ 3317 product(bool, UseVMInterruptibleIO, false, \ 3318 "(Unstable, Solaris-specific) Thread interrupt before or with " \ 3319 "EINTR for I/O operations results in OS_INTRPT. The default value"\ 3320 " of this flag is true for JDK 6 and earliers") 3321 3322 3323/* 3324 * Macros for factoring of globals 3325 */ 3326 3327// Interface macros 3328#define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3329#define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 3330#define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 3331#define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 3332#define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 3333#define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 3334#ifdef PRODUCT 3335#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 3336#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 3337#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) 3338#else 3339#define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 3340#define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 3341#define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3342#endif 3343// Special LP64 flags, product only needed for now. 3344#ifdef _LP64 3345#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 3346#else 3347#define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 3348#endif // _LP64 3349 3350// Implementation macros 3351#define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 3352#define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 3353#define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 3354#define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 3355#define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 3356#define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 3357#ifdef PRODUCT 3358#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ 3359#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ 3360#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 3361#else 3362#define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 3363#define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 3364#define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 3365#endif 3366#ifdef _LP64 3367#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 3368#else 3369#define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 3370#endif // _LP64 3371 3372RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG, DECLARE_LP64_PRODUCT_FLAG) 3373 3374RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) 3375