1 /* 2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP 26 #define SHARE_VM_RUNTIME_GLOBALS_HPP 27 28 #include "gc/shared/gc_globals.hpp" 29 #include "utilities/align.hpp" 30 #include "utilities/globalDefinitions.hpp" 31 #include "utilities/macros.hpp" 32 33 #include <float.h> // for DBL_MAX 34 35 // The larger HeapWordSize for 64bit requires larger heaps 36 // for the same application running in 64bit. See bug 4967770. 37 // The minimum alignment to a heap word size is done. Other 38 // parts of the memory system may require additional alignment 39 // and are responsible for those alignments. 40 #ifdef _LP64 41 #define ScaleForWordSize(x) align_down_((x) * 13 / 10, HeapWordSize) 42 #else 43 #define ScaleForWordSize(x) (x) 44 #endif 45 46 // use this for flags that are true per default in the tiered build 47 // but false in non-tiered builds, and vice versa 48 #ifdef TIERED 49 #define trueInTiered true 50 #define falseInTiered false 51 #else 52 #define trueInTiered false 53 #define falseInTiered true 54 #endif 55 56 #include CPU_HEADER(globals) 57 #include OS_HEADER(globals) 58 #include OS_CPU_HEADER(globals) 59 #ifdef COMPILER1 60 #include CPU_HEADER(c1_globals) 61 #include OS_HEADER(c1_globals) 62 #endif 63 #ifdef COMPILER2 64 #include CPU_HEADER(c2_globals) 65 #include OS_HEADER(c2_globals) 66 #endif 67 68 #if !defined(COMPILER1) && !defined(COMPILER2) && !INCLUDE_JVMCI 69 define_pd_global(bool, BackgroundCompilation, false); 70 define_pd_global(bool, UseTLAB, false); 71 define_pd_global(bool, CICompileOSR, false); 72 define_pd_global(bool, UseTypeProfile, false); 73 define_pd_global(bool, UseOnStackReplacement, false); 74 define_pd_global(bool, InlineIntrinsics, false); 75 define_pd_global(bool, PreferInterpreterNativeStubs, true); 76 define_pd_global(bool, ProfileInterpreter, false); 77 define_pd_global(bool, ProfileTraps, false); 78 define_pd_global(bool, TieredCompilation, false); 79 80 define_pd_global(intx, CompileThreshold, 0); 81 82 define_pd_global(intx, OnStackReplacePercentage, 0); 83 define_pd_global(bool, ResizeTLAB, false); 84 define_pd_global(intx, FreqInlineSize, 0); 85 define_pd_global(size_t, NewSizeThreadIncrease, 4*K); 86 define_pd_global(bool, InlineClassNatives, true); 87 define_pd_global(bool, InlineUnsafeOps, true); 88 define_pd_global(uintx, InitialCodeCacheSize, 160*K); 89 define_pd_global(uintx, ReservedCodeCacheSize, 32*M); 90 define_pd_global(uintx, NonProfiledCodeHeapSize, 0); 91 define_pd_global(uintx, ProfiledCodeHeapSize, 0); 92 define_pd_global(uintx, NonNMethodCodeHeapSize, 32*M); 93 94 define_pd_global(uintx, CodeCacheExpansionSize, 32*K); 95 define_pd_global(uintx, CodeCacheMinBlockLength, 1); 96 define_pd_global(uintx, CodeCacheMinimumUseSpace, 200*K); 97 define_pd_global(size_t, MetaspaceSize, ScaleForWordSize(4*M)); 98 define_pd_global(bool, NeverActAsServerClassMachine, true); 99 define_pd_global(uint64_t,MaxRAM, 1ULL*G); 100 #define CI_COMPILER_COUNT 0 101 #else 102 103 #if COMPILER2_OR_JVMCI 104 #define CI_COMPILER_COUNT 2 105 #else 106 #define CI_COMPILER_COUNT 1 107 #endif // COMPILER2_OR_JVMCI 108 109 #endif // no compilers 110 111 // use this for flags that are true by default in the debug version but 112 // false in the optimized version, and vice versa 113 #ifdef ASSERT 114 #define trueInDebug true 115 #define falseInDebug false 116 #else 117 #define trueInDebug false 118 #define falseInDebug true 119 #endif 120 121 // use this for flags that are true per default in the product build 122 // but false in development builds, and vice versa 123 #ifdef PRODUCT 124 #define trueInProduct true 125 #define falseInProduct false 126 #else 127 #define trueInProduct false 128 #define falseInProduct true 129 #endif 130 131 // develop flags are settable / visible only during development and are constant in the PRODUCT version 132 // product flags are always settable / visible 133 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version 134 135 // A flag must be declared with one of the following types: 136 // bool, int, uint, intx, uintx, size_t, ccstr, double, or uint64_t. 137 // The type "ccstr" is an alias for "const char*" and is used 138 // only in this file, because the macrology requires single-token type names. 139 140 // Note: Diagnostic options not meant for VM tuning or for product modes. 141 // They are to be used for VM quality assurance or field diagnosis 142 // of VM bugs. They are hidden so that users will not be encouraged to 143 // try them as if they were VM ordinary execution options. However, they 144 // are available in the product version of the VM. Under instruction 145 // from support engineers, VM customers can turn them on to collect 146 // diagnostic information about VM problems. To use a VM diagnostic 147 // option, you must first specify +UnlockDiagnosticVMOptions. 148 // (This master switch also affects the behavior of -Xprintflags.) 149 // 150 // experimental flags are in support of features that are not 151 // part of the officially supported product, but are available 152 // for experimenting with. They could, for example, be performance 153 // features that may not have undergone full or rigorous QA, but which may 154 // help performance in some cases and released for experimentation 155 // by the community of users and developers. This flag also allows one to 156 // be able to build a fully supported product that nonetheless also 157 // ships with some unsupported, lightly tested, experimental features. 158 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding 159 // UnlockExperimentalVMOptions flag, which allows the control and 160 // modification of the experimental flags. 161 // 162 // Nota bene: neither diagnostic nor experimental options should be used casually, 163 // and they are not supported on production loads, except under explicit 164 // direction from support engineers. 165 // 166 // manageable flags are writeable external product flags. 167 // They are dynamically writeable through the JDK management interface 168 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. 169 // These flags are external exported interface (see CCC). The list of 170 // manageable flags can be queried programmatically through the management 171 // interface. 172 // 173 // A flag can be made as "manageable" only if 174 // - the flag is defined in a CCC as an external exported interface. 175 // - the VM implementation supports dynamic setting of the flag. 176 // This implies that the VM must *always* query the flag variable 177 // and not reuse state related to the flag state at any given time. 178 // - you want the flag to be queried programmatically by the customers. 179 // 180 // product_rw flags are writeable internal product flags. 181 // They are like "manageable" flags but for internal/private use. 182 // The list of product_rw flags are internal/private flags which 183 // may be changed/removed in a future release. It can be set 184 // through the management interface to get/set value 185 // when the name of flag is supplied. 186 // 187 // A flag can be made as "product_rw" only if 188 // - the VM implementation supports dynamic setting of the flag. 189 // This implies that the VM must *always* query the flag variable 190 // and not reuse state related to the flag state at any given time. 191 // 192 // Note that when there is a need to support develop flags to be writeable, 193 // it can be done in the same way as product_rw. 194 // 195 // range is a macro that will expand to min and max arguments for range 196 // checking code if provided - see jvmFlagRangeList.hpp 197 // 198 // constraint is a macro that will expand to custom function call 199 // for constraint checking if provided - see jvmFlagConstraintList.hpp 200 // 201 // writeable is a macro that controls if and how the value can change during the runtime 202 // 203 // writeable(Always) is optional and allows the flag to have its value changed 204 // without any limitations at any time 205 // 206 // writeable(Once) flag value's can be only set once during the lifetime of VM 207 // 208 // writeable(CommandLineOnly) flag value's can be only set from command line 209 // (multiple times allowed) 210 // 211 212 213 #define RUNTIME_FLAGS(develop, \ 214 develop_pd, \ 215 product, \ 216 product_pd, \ 217 diagnostic, \ 218 diagnostic_pd, \ 219 experimental, \ 220 notproduct, \ 221 manageable, \ 222 product_rw, \ 223 lp64_product, \ 224 range, \ 225 constraint, \ 226 writeable) \ 227 \ 228 lp64_product(bool, UseCompressedOops, false, \ 229 "Use 32-bit object references in 64-bit VM. " \ 230 "lp64_product means flag is always constant in 32 bit VM") \ 231 \ 232 lp64_product(bool, UseCompressedClassPointers, false, \ 233 "Use 32-bit class pointers in 64-bit VM. " \ 234 "lp64_product means flag is always constant in 32 bit VM") \ 235 \ 236 notproduct(bool, CheckCompressedOops, true, \ 237 "Generate checks in encoding/decoding code in debug VM") \ 238 \ 239 product(uintx, HeapSearchSteps, 3 PPC64_ONLY(+17), \ 240 "Heap allocation steps through preferred address regions to find" \ 241 " where it can allocate the heap. Number of steps to take per " \ 242 "region.") \ 243 range(1, max_uintx) \ 244 \ 245 lp64_product(intx, ObjectAlignmentInBytes, 8, \ 246 "Default object alignment in bytes, 8 is minimum") \ 247 range(8, 256) \ 248 constraint(ObjectAlignmentInBytesConstraintFunc,AtParse) \ 249 \ 250 develop(bool, CleanChunkPoolAsync, true, \ 251 "Clean the chunk pool asynchronously") \ 252 \ 253 product_pd(bool, ThreadLocalHandshakes, \ 254 "Use thread-local polls instead of global poll for safepoints.") \ 255 constraint(ThreadLocalHandshakesConstraintFunc,AfterErgo) \ 256 \ 257 diagnostic(uint, HandshakeTimeout, 0, \ 258 "If nonzero set a timeout in milliseconds for handshakes") \ 259 \ 260 experimental(bool, AlwaysSafeConstructors, false, \ 261 "Force safe construction, as if all fields are final.") \ 262 \ 263 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ 264 "Enable normal processing of flags relating to field diagnostics")\ 265 \ 266 experimental(bool, UnlockExperimentalVMOptions, false, \ 267 "Enable normal processing of flags relating to experimental " \ 268 "features") \ 269 \ 270 product(bool, JavaMonitorsInStackTrace, true, \ 271 "Print information about Java monitor locks when the stacks are" \ 272 "dumped") \ 273 \ 274 product_pd(bool, UseLargePages, \ 275 "Use large page memory") \ 276 \ 277 product_pd(bool, UseLargePagesIndividualAllocation, \ 278 "Allocate large pages individually for better affinity") \ 279 \ 280 develop(bool, LargePagesIndividualAllocationInjectError, false, \ 281 "Fail large pages individual allocation") \ 282 \ 283 product(bool, UseLargePagesInMetaspace, false, \ 284 "Use large page memory in metaspace. " \ 285 "Only used if UseLargePages is enabled.") \ 286 \ 287 product(bool, UseNUMA, false, \ 288 "Use NUMA if available") \ 289 \ 290 product(bool, UseNUMAInterleaving, false, \ 291 "Interleave memory across NUMA nodes if available") \ 292 \ 293 product(size_t, NUMAInterleaveGranularity, 2*M, \ 294 "Granularity to use for NUMA interleaving on Windows OS") \ 295 range(os::vm_allocation_granularity(), NOT_LP64(2*G) LP64_ONLY(8192*G)) \ 296 \ 297 product(bool, ForceNUMA, false, \ 298 "Force NUMA optimizations on single-node/UMA systems") \ 299 \ 300 product(uintx, NUMAChunkResizeWeight, 20, \ 301 "Percentage (0-100) used to weight the current sample when " \ 302 "computing exponentially decaying average for " \ 303 "AdaptiveNUMAChunkSizing") \ 304 range(0, 100) \ 305 \ 306 product(size_t, NUMASpaceResizeRate, 1*G, \ 307 "Do not reallocate more than this amount per collection") \ 308 range(0, max_uintx) \ 309 \ 310 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 311 "Enable adaptive chunk sizing for NUMA") \ 312 \ 313 product(bool, NUMAStats, false, \ 314 "Print NUMA stats in detailed heap information") \ 315 \ 316 product(uintx, NUMAPageScanRate, 256, \ 317 "Maximum number of pages to include in the page scan procedure") \ 318 range(0, max_uintx) \ 319 \ 320 product_pd(bool, NeedsDeoptSuspend, \ 321 "True for register window machines (sparc/ia64)") \ 322 \ 323 product(intx, UseSSE, 99, \ 324 "Highest supported SSE instructions set on x86/x64") \ 325 range(0, 99) \ 326 \ 327 product(bool, UseAES, false, \ 328 "Control whether AES instructions are used when available") \ 329 \ 330 product(bool, UseFMA, false, \ 331 "Control whether FMA instructions are used when available") \ 332 \ 333 product(bool, UseSHA, false, \ 334 "Control whether SHA instructions are used when available") \ 335 \ 336 diagnostic(bool, UseGHASHIntrinsics, false, \ 337 "Use intrinsics for GHASH versions of crypto") \ 338 \ 339 product(bool, UseBASE64Intrinsics, false, \ 340 "Use intrinsics for java.util.Base64") \ 341 \ 342 product(size_t, LargePageSizeInBytes, 0, \ 343 "Large page size (0 to let VM choose the page size)") \ 344 range(0, max_uintx) \ 345 \ 346 product(size_t, LargePageHeapSizeThreshold, 128*M, \ 347 "Use large pages if maximum heap is at least this big") \ 348 range(0, max_uintx) \ 349 \ 350 product(bool, ForceTimeHighResolution, false, \ 351 "Using high time resolution (for Win32 only)") \ 352 \ 353 develop(bool, TracePcPatching, false, \ 354 "Trace usage of frame::patch_pc") \ 355 \ 356 develop(bool, TraceRelocator, false, \ 357 "Trace the bytecode relocator") \ 358 \ 359 develop(bool, TraceLongCompiles, false, \ 360 "Print out every time compilation is longer than " \ 361 "a given threshold") \ 362 \ 363 develop(bool, SafepointALot, false, \ 364 "Generate a lot of safepoints. This works with " \ 365 "GuaranteedSafepointInterval") \ 366 \ 367 product_pd(bool, BackgroundCompilation, \ 368 "A thread requesting compilation is not blocked during " \ 369 "compilation") \ 370 \ 371 product(bool, PrintVMQWaitTime, false, \ 372 "Print out the waiting time in VM operation queue") \ 373 \ 374 product(bool, MethodFlushing, true, \ 375 "Reclamation of zombie and not-entrant methods") \ 376 \ 377 develop(bool, VerifyStack, false, \ 378 "Verify stack of each thread when it is entering a runtime call") \ 379 \ 380 diagnostic(bool, ForceUnreachable, false, \ 381 "Make all non code cache addresses to be unreachable by " \ 382 "forcing use of 64bit literal fixups") \ 383 \ 384 notproduct(bool, StressDerivedPointers, false, \ 385 "Force scavenge when a derived pointer is detected on stack " \ 386 "after rtm call") \ 387 \ 388 develop(bool, TraceDerivedPointers, false, \ 389 "Trace traversal of derived pointers on stack") \ 390 \ 391 notproduct(bool, TraceCodeBlobStacks, false, \ 392 "Trace stack-walk of codeblobs") \ 393 \ 394 product(bool, PrintJNIResolving, false, \ 395 "Used to implement -v:jni") \ 396 \ 397 notproduct(bool, PrintRewrites, false, \ 398 "Print methods that are being rewritten") \ 399 \ 400 product(bool, UseInlineCaches, true, \ 401 "Use Inline Caches for virtual calls ") \ 402 \ 403 diagnostic(bool, InlineArrayCopy, true, \ 404 "Inline arraycopy native that is known to be part of " \ 405 "base library DLL") \ 406 \ 407 diagnostic(bool, InlineObjectHash, true, \ 408 "Inline Object::hashCode() native that is known to be part " \ 409 "of base library DLL") \ 410 \ 411 diagnostic(bool, InlineNatives, true, \ 412 "Inline natives that are known to be part of base library DLL") \ 413 \ 414 diagnostic(bool, InlineMathNatives, true, \ 415 "Inline SinD, CosD, etc.") \ 416 \ 417 diagnostic(bool, InlineClassNatives, true, \ 418 "Inline Class.isInstance, etc") \ 419 \ 420 diagnostic(bool, InlineThreadNatives, true, \ 421 "Inline Thread.currentThread, etc") \ 422 \ 423 diagnostic(bool, InlineUnsafeOps, true, \ 424 "Inline memory ops (native methods) from Unsafe") \ 425 \ 426 product(bool, CriticalJNINatives, true, \ 427 "Check for critical JNI entry points") \ 428 \ 429 notproduct(bool, StressCriticalJNINatives, false, \ 430 "Exercise register saving code in critical natives") \ 431 \ 432 diagnostic(bool, UseAESIntrinsics, false, \ 433 "Use intrinsics for AES versions of crypto") \ 434 \ 435 diagnostic(bool, UseAESCTRIntrinsics, false, \ 436 "Use intrinsics for the paralleled version of AES/CTR crypto") \ 437 \ 438 diagnostic(bool, UseSHA1Intrinsics, false, \ 439 "Use intrinsics for SHA-1 crypto hash function. " \ 440 "Requires that UseSHA is enabled.") \ 441 \ 442 diagnostic(bool, UseSHA256Intrinsics, false, \ 443 "Use intrinsics for SHA-224 and SHA-256 crypto hash functions. " \ 444 "Requires that UseSHA is enabled.") \ 445 \ 446 diagnostic(bool, UseSHA512Intrinsics, false, \ 447 "Use intrinsics for SHA-384 and SHA-512 crypto hash functions. " \ 448 "Requires that UseSHA is enabled.") \ 449 \ 450 diagnostic(bool, UseCRC32Intrinsics, false, \ 451 "use intrinsics for java.util.zip.CRC32") \ 452 \ 453 diagnostic(bool, UseCRC32CIntrinsics, false, \ 454 "use intrinsics for java.util.zip.CRC32C") \ 455 \ 456 diagnostic(bool, UseAdler32Intrinsics, false, \ 457 "use intrinsics for java.util.zip.Adler32") \ 458 \ 459 diagnostic(bool, UseVectorizedMismatchIntrinsic, false, \ 460 "Enables intrinsification of ArraysSupport.vectorizedMismatch()") \ 461 \ 462 diagnostic(ccstrlist, DisableIntrinsic, "", \ 463 "do not expand intrinsics whose (internal) names appear here") \ 464 \ 465 develop(bool, TraceCallFixup, false, \ 466 "Trace all call fixups") \ 467 \ 468 develop(bool, DeoptimizeALot, false, \ 469 "Deoptimize at every exit from the runtime system") \ 470 \ 471 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ 472 "A comma separated list of bcis to deoptimize at") \ 473 \ 474 product(bool, DeoptimizeRandom, false, \ 475 "Deoptimize random frames on random exit from the runtime system")\ 476 \ 477 notproduct(bool, ZombieALot, false, \ 478 "Create zombies (non-entrant) at exit from the runtime system") \ 479 \ 480 notproduct(bool, WalkStackALot, false, \ 481 "Trace stack (no print) at every exit from the runtime system") \ 482 \ 483 product(bool, Debugging, false, \ 484 "Set when executing debug methods in debug.cpp " \ 485 "(to prevent triggering assertions)") \ 486 \ 487 notproduct(bool, StrictSafepointChecks, trueInDebug, \ 488 "Enable strict checks that safepoints cannot happen for threads " \ 489 "that use NoSafepointVerifier") \ 490 \ 491 notproduct(bool, VerifyLastFrame, false, \ 492 "Verify oops on last frame on entry to VM") \ 493 \ 494 product(bool, FailOverToOldVerifier, true, \ 495 "Fail over to old verifier when split verifier fails") \ 496 \ 497 product(bool, SafepointTimeout, false, \ 498 "Time out and warn or fail after SafepointTimeoutDelay " \ 499 "milliseconds if failed to reach safepoint") \ 500 \ 501 diagnostic(bool, AbortVMOnSafepointTimeout, false, \ 502 "Abort upon failure to reach safepoint (see SafepointTimeout)") \ 503 \ 504 diagnostic(bool, AbortVMOnVMOperationTimeout, false, \ 505 "Abort upon failure to complete VM operation promptly") \ 506 \ 507 diagnostic(intx, AbortVMOnVMOperationTimeoutDelay, 1000, \ 508 "Delay in milliseconds for option AbortVMOnVMOperationTimeout") \ 509 range(0, max_intx) \ 510 \ 511 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ 512 /* typically, at most a few retries are needed */ \ 513 product(intx, SuspendRetryCount, 50, \ 514 "Maximum retry count for an external suspend request") \ 515 range(0, max_intx) \ 516 \ 517 product(intx, SuspendRetryDelay, 5, \ 518 "Milliseconds to delay per retry (* current_retry_count)") \ 519 range(0, max_intx) \ 520 \ 521 product(bool, AssertOnSuspendWaitFailure, false, \ 522 "Assert/Guarantee on external suspend wait failure") \ 523 \ 524 product(bool, TraceSuspendWaitFailures, false, \ 525 "Trace external suspend wait failures") \ 526 \ 527 product(bool, MaxFDLimit, true, \ 528 "Bump the number of file descriptors to maximum in Solaris") \ 529 \ 530 diagnostic(bool, LogEvents, true, \ 531 "Enable the various ring buffer event logs") \ 532 \ 533 diagnostic(uintx, LogEventsBufferEntries, 10, \ 534 "Number of ring buffer event logs") \ 535 range(1, NOT_LP64(1*K) LP64_ONLY(1*M)) \ 536 \ 537 product(bool, BytecodeVerificationRemote, true, \ 538 "Enable the Java bytecode verifier for remote classes") \ 539 \ 540 product(bool, BytecodeVerificationLocal, false, \ 541 "Enable the Java bytecode verifier for local classes") \ 542 \ 543 develop(bool, ForceFloatExceptions, trueInDebug, \ 544 "Force exceptions on FP stack under/overflow") \ 545 \ 546 develop(bool, VerifyStackAtCalls, false, \ 547 "Verify that the stack pointer is unchanged after calls") \ 548 \ 549 develop(bool, TraceJavaAssertions, false, \ 550 "Trace java language assertions") \ 551 \ 552 notproduct(bool, VerifyCodeCache, false, \ 553 "Verify code cache on memory allocation/deallocation") \ 554 \ 555 develop(bool, UseMallocOnly, false, \ 556 "Use only malloc/free for allocation (no resource area/arena)") \ 557 \ 558 develop(bool, PrintMallocStatistics, false, \ 559 "Print malloc/free statistics") \ 560 \ 561 develop(bool, ZapResourceArea, trueInDebug, \ 562 "Zap freed resource/arena space with 0xABABABAB") \ 563 \ 564 notproduct(bool, ZapVMHandleArea, trueInDebug, \ 565 "Zap freed VM handle space with 0xBCBCBCBC") \ 566 \ 567 notproduct(bool, ZapStackSegments, trueInDebug, \ 568 "Zap allocated/freed stack segments with 0xFADFADED") \ 569 \ 570 develop(bool, ZapUnusedHeapArea, trueInDebug, \ 571 "Zap unused heap space with 0xBAADBABE") \ 572 \ 573 develop(bool, CheckZapUnusedHeapArea, false, \ 574 "Check zapping of unused heap space") \ 575 \ 576 develop(bool, ZapFillerObjects, trueInDebug, \ 577 "Zap filler objects with 0xDEAFBABE") \ 578 \ 579 develop(bool, PrintVMMessages, true, \ 580 "Print VM messages on console") \ 581 \ 582 notproduct(uintx, ErrorHandlerTest, 0, \ 583 "If > 0, provokes an error after VM initialization; the value " \ 584 "determines which error to provoke. See test_error_handler() " \ 585 "in vmError.cpp.") \ 586 \ 587 notproduct(uintx, TestCrashInErrorHandler, 0, \ 588 "If > 0, provokes an error inside VM error handler (a secondary " \ 589 "crash). see test_error_handler() in vmError.cpp") \ 590 \ 591 notproduct(bool, TestSafeFetchInErrorHandler, false, \ 592 "If true, tests SafeFetch inside error handler.") \ 593 \ 594 notproduct(bool, TestUnresponsiveErrorHandler, false, \ 595 "If true, simulates an unresponsive error handler.") \ 596 \ 597 develop(bool, Verbose, false, \ 598 "Print additional debugging information from other modes") \ 599 \ 600 develop(bool, PrintMiscellaneous, false, \ 601 "Print uncategorized debugging information (requires +Verbose)") \ 602 \ 603 develop(bool, WizardMode, false, \ 604 "Print much more debugging information") \ 605 \ 606 product(bool, ShowMessageBoxOnError, false, \ 607 "Keep process alive on VM fatal error") \ 608 \ 609 product(bool, CreateCoredumpOnCrash, true, \ 610 "Create core/mini dump on VM fatal error") \ 611 \ 612 product(uint64_t, ErrorLogTimeout, 2 * 60, \ 613 "Timeout, in seconds, to limit the time spent on writing an " \ 614 "error log in case of a crash.") \ 615 range(0, (uint64_t)max_jlong/1000) \ 616 \ 617 product_pd(bool, UseOSErrorReporting, \ 618 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ 619 \ 620 product(bool, SuppressFatalErrorMessage, false, \ 621 "Report NO fatal error message (avoid deadlock)") \ 622 \ 623 product(ccstrlist, OnError, "", \ 624 "Run user-defined commands on fatal error; see VMError.cpp " \ 625 "for examples") \ 626 \ 627 product(ccstrlist, OnOutOfMemoryError, "", \ 628 "Run user-defined commands on first java.lang.OutOfMemoryError") \ 629 \ 630 manageable(bool, HeapDumpBeforeFullGC, false, \ 631 "Dump heap to file before any major stop-the-world GC") \ 632 \ 633 manageable(bool, HeapDumpAfterFullGC, false, \ 634 "Dump heap to file after any major stop-the-world GC") \ 635 \ 636 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ 637 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ 638 \ 639 manageable(ccstr, HeapDumpPath, NULL, \ 640 "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \ 641 "directory) of the dump file (defaults to java_pid<pid>.hprof " \ 642 "in the working directory)") \ 643 \ 644 develop(bool, BreakAtWarning, false, \ 645 "Execute breakpoint upon encountering VM warning") \ 646 \ 647 develop(bool, UseFakeTimers, false, \ 648 "Tell whether the VM should use system time or a fake timer") \ 649 \ 650 product(ccstr, NativeMemoryTracking, "off", \ 651 "Native memory tracking options") \ 652 \ 653 diagnostic(bool, PrintNMTStatistics, false, \ 654 "Print native memory tracking summary data if it is on") \ 655 \ 656 diagnostic(bool, LogCompilation, false, \ 657 "Log compilation activity in detail to LogFile") \ 658 \ 659 product(bool, PrintCompilation, false, \ 660 "Print compilations") \ 661 \ 662 product(bool, PrintExtendedThreadInfo, false, \ 663 "Print more information in thread dump") \ 664 \ 665 diagnostic(bool, TraceNMethodInstalls, false, \ 666 "Trace nmethod installation") \ 667 \ 668 diagnostic(intx, ScavengeRootsInCode, 2, \ 669 "0: do not allow scavengable oops in the code cache; " \ 670 "1: allow scavenging from the code cache; " \ 671 "2: emit as many constants as the compiler can see") \ 672 range(0, 2) \ 673 \ 674 product(bool, AlwaysRestoreFPU, false, \ 675 "Restore the FPU control word after every JNI call (expensive)") \ 676 \ 677 diagnostic(bool, PrintCompilation2, false, \ 678 "Print additional statistics per compilation") \ 679 \ 680 diagnostic(bool, PrintAdapterHandlers, false, \ 681 "Print code generated for i2c/c2i adapters") \ 682 \ 683 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ 684 "Verify that i2c/c2i adapters are called properly") \ 685 \ 686 develop(bool, VerifyAdapterSharing, false, \ 687 "Verify that the code for shared adapters is the equivalent") \ 688 \ 689 diagnostic(bool, PrintAssembly, false, \ 690 "Print assembly code (using external disassembler.so)") \ 691 \ 692 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ 693 "Print options string passed to disassembler.so") \ 694 \ 695 notproduct(bool, PrintNMethodStatistics, false, \ 696 "Print a summary statistic for the generated nmethods") \ 697 \ 698 diagnostic(bool, PrintNMethods, false, \ 699 "Print assembly code for nmethods when generated") \ 700 \ 701 diagnostic(bool, PrintNativeNMethods, false, \ 702 "Print assembly code for native nmethods when generated") \ 703 \ 704 develop(bool, PrintDebugInfo, false, \ 705 "Print debug information for all nmethods when generated") \ 706 \ 707 develop(bool, PrintRelocations, false, \ 708 "Print relocation information for all nmethods when generated") \ 709 \ 710 develop(bool, PrintDependencies, false, \ 711 "Print dependency information for all nmethods when generated") \ 712 \ 713 develop(bool, PrintExceptionHandlers, false, \ 714 "Print exception handler tables for all nmethods when generated") \ 715 \ 716 develop(bool, StressCompiledExceptionHandlers, false, \ 717 "Exercise compiled exception handlers") \ 718 \ 719 develop(bool, InterceptOSException, false, \ 720 "Start debugger when an implicit OS (e.g. NULL) " \ 721 "exception happens") \ 722 \ 723 product(bool, PrintCodeCache, false, \ 724 "Print the code cache memory usage when exiting") \ 725 \ 726 develop(bool, PrintCodeCache2, false, \ 727 "Print detailed usage information on the code cache when exiting")\ 728 \ 729 product(bool, PrintCodeCacheOnCompilation, false, \ 730 "Print the code cache memory usage each time a method is " \ 731 "compiled") \ 732 \ 733 diagnostic(bool, PrintCodeHeapAnalytics, false, \ 734 "Print code heap usage statistics on exit and on full condition") \ 735 \ 736 diagnostic(bool, PrintStubCode, false, \ 737 "Print generated stub code") \ 738 \ 739 product(bool, StackTraceInThrowable, true, \ 740 "Collect backtrace in throwable when exception happens") \ 741 \ 742 product(bool, OmitStackTraceInFastThrow, true, \ 743 "Omit backtraces for some 'hot' exceptions in optimized code") \ 744 \ 745 product(bool, ProfilerPrintByteCodeStatistics, false, \ 746 "Print bytecode statistics when dumping profiler output") \ 747 \ 748 product(bool, ProfilerRecordPC, false, \ 749 "Collect ticks for each 16 byte interval of compiled code") \ 750 \ 751 product(bool, ProfileVM, false, \ 752 "Profile ticks that fall within VM (either in the VM Thread " \ 753 "or VM code called through stubs)") \ 754 \ 755 product(bool, ProfileIntervals, false, \ 756 "Print profiles for each interval (see ProfileIntervalsTicks)") \ 757 \ 758 notproduct(bool, ProfilerCheckIntervals, false, \ 759 "Collect and print information on spacing of profiler ticks") \ 760 \ 761 product(bool, PrintWarnings, true, \ 762 "Print JVM warnings to output stream") \ 763 \ 764 notproduct(uintx, WarnOnStalledSpinLock, 0, \ 765 "Print warnings for stalled SpinLocks") \ 766 \ 767 product(bool, RegisterFinalizersAtInit, true, \ 768 "Register finalizable objects at end of Object.<init> or " \ 769 "after allocation") \ 770 \ 771 develop(bool, RegisterReferences, true, \ 772 "Tell whether the VM should register soft/weak/final/phantom " \ 773 "references") \ 774 \ 775 develop(bool, IgnoreRewrites, false, \ 776 "Suppress rewrites of bytecodes in the oopmap generator. " \ 777 "This is unsafe!") \ 778 \ 779 develop(bool, PrintCodeCacheExtension, false, \ 780 "Print extension of code cache") \ 781 \ 782 develop(bool, UsePrivilegedStack, true, \ 783 "Enable the security JVM functions") \ 784 \ 785 develop(bool, ProtectionDomainVerification, true, \ 786 "Verify protection domain before resolution in system dictionary")\ 787 \ 788 product(bool, ClassUnloading, true, \ 789 "Do unloading of classes") \ 790 \ 791 product(bool, ClassUnloadingWithConcurrentMark, true, \ 792 "Do unloading of classes with a concurrent marking cycle") \ 793 \ 794 develop(bool, DisableStartThread, false, \ 795 "Disable starting of additional Java threads " \ 796 "(for debugging only)") \ 797 \ 798 develop(bool, MemProfiling, false, \ 799 "Write memory usage profiling to log file") \ 800 \ 801 notproduct(bool, PrintSystemDictionaryAtExit, false, \ 802 "Print the system dictionary at exit") \ 803 \ 804 diagnostic(bool, DynamicallyResizeSystemDictionaries, true, \ 805 "Dynamically resize system dictionaries as needed") \ 806 \ 807 product(bool, AlwaysLockClassLoader, false, \ 808 "Require the VM to acquire the class loader lock before calling " \ 809 "loadClass() even for class loaders registering " \ 810 "as parallel capable") \ 811 \ 812 product(bool, AllowParallelDefineClass, false, \ 813 "Allow parallel defineClass requests for class loaders " \ 814 "registering as parallel capable") \ 815 \ 816 product_pd(bool, DontYieldALot, \ 817 "Throw away obvious excess yield calls") \ 818 \ 819 develop(bool, UseDetachedThreads, true, \ 820 "Use detached threads that are recycled upon termination " \ 821 "(for Solaris only)") \ 822 \ 823 experimental(bool, DisablePrimordialThreadGuardPages, false, \ 824 "Disable the use of stack guard pages if the JVM is loaded " \ 825 "on the primordial process thread") \ 826 \ 827 product(bool, UseLWPSynchronization, true, \ 828 "Use LWP-based instead of libthread-based synchronization " \ 829 "(SPARC only)") \ 830 \ 831 product(intx, MonitorBound, 0, "Bound Monitor population") \ 832 range(0, max_jint) \ 833 \ 834 experimental(intx, MonitorUsedDeflationThreshold, 90, \ 835 "Percentage of used monitors before triggering cleanup " \ 836 "safepoint which deflates monitors (0 is off). " \ 837 "The check is performed on GuaranteedSafepointInterval.") \ 838 range(0, 100) \ 839 \ 840 experimental(intx, hashCode, 5, \ 841 "(Unstable) select hashCode generation algorithm") \ 842 \ 843 product(bool, FilterSpuriousWakeups, true, \ 844 "When true prevents OS-level spurious, or premature, wakeups " \ 845 "from Object.wait (Ignored for Windows)") \ 846 \ 847 develop(bool, UsePthreads, false, \ 848 "Use pthread-based instead of libthread-based synchronization " \ 849 "(SPARC only)") \ 850 \ 851 product(bool, ReduceSignalUsage, false, \ 852 "Reduce the use of OS signals in Java and/or the VM") \ 853 \ 854 develop_pd(bool, ShareVtableStubs, \ 855 "Share vtable stubs (smaller code but worse branch prediction") \ 856 \ 857 develop(bool, LoadLineNumberTables, true, \ 858 "Tell whether the class file parser loads line number tables") \ 859 \ 860 develop(bool, LoadLocalVariableTables, true, \ 861 "Tell whether the class file parser loads local variable tables") \ 862 \ 863 develop(bool, LoadLocalVariableTypeTables, true, \ 864 "Tell whether the class file parser loads local variable type" \ 865 "tables") \ 866 \ 867 product(bool, AllowUserSignalHandlers, false, \ 868 "Do not complain if the application installs signal handlers " \ 869 "(Solaris & Linux only)") \ 870 \ 871 product(bool, UseSignalChaining, true, \ 872 "Use signal-chaining to invoke signal handlers installed " \ 873 "by the application (Solaris & Linux only)") \ 874 \ 875 product(bool, AllowJNIEnvProxy, false, \ 876 "Allow JNIEnv proxies for jdbx") \ 877 \ 878 product(bool, RestoreMXCSROnJNICalls, false, \ 879 "Restore MXCSR when returning from JNI calls") \ 880 \ 881 product(bool, CheckJNICalls, false, \ 882 "Verify all arguments to JNI calls") \ 883 \ 884 product(bool, UseFastJNIAccessors, true, \ 885 "Use optimized versions of Get<Primitive>Field") \ 886 \ 887 product(intx, MaxJNILocalCapacity, 65536, \ 888 "Maximum allowable local JNI handle capacity to " \ 889 "EnsureLocalCapacity() and PushLocalFrame(), " \ 890 "where <= 0 is unlimited, default: 65536") \ 891 range(min_intx, max_intx) \ 892 \ 893 product(bool, EagerXrunInit, false, \ 894 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ 895 "but not all -Xrun libraries may support the state of the VM " \ 896 "at this time") \ 897 \ 898 product(bool, PreserveAllAnnotations, false, \ 899 "Preserve RuntimeInvisibleAnnotations as well " \ 900 "as RuntimeVisibleAnnotations") \ 901 \ 902 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ 903 "Number of OutOfMemoryErrors preallocated with backtrace") \ 904 \ 905 product(bool, UseXMMForArrayCopy, false, \ 906 "Use SSE2 MOVQ instruction for Arraycopy") \ 907 \ 908 product(intx, FieldsAllocationStyle, 1, \ 909 "0 - type based with oops first, " \ 910 "1 - with oops last, " \ 911 "2 - oops in super and sub classes are together") \ 912 range(0, 2) \ 913 \ 914 product(bool, CompactFields, true, \ 915 "Allocate nonstatic fields in gaps between previous fields") \ 916 \ 917 notproduct(bool, PrintFieldLayout, false, \ 918 "Print field layout for each class") \ 919 \ 920 /* Need to limit the extent of the padding to reasonable size. */\ 921 /* 8K is well beyond the reasonable HW cache line size, even with */\ 922 /* aggressive prefetching, while still leaving the room for segregating */\ 923 /* among the distinct pages. */\ 924 product(intx, ContendedPaddingWidth, 128, \ 925 "How many bytes to pad the fields/classes marked @Contended with")\ 926 range(0, 8192) \ 927 constraint(ContendedPaddingWidthConstraintFunc,AfterErgo) \ 928 \ 929 product(bool, EnableContended, true, \ 930 "Enable @Contended annotation support") \ 931 \ 932 product(bool, RestrictContended, true, \ 933 "Restrict @Contended to trusted classes") \ 934 \ 935 product(bool, UseBiasedLocking, true, \ 936 "Enable biased locking in JVM") \ 937 \ 938 product(intx, BiasedLockingStartupDelay, 0, \ 939 "Number of milliseconds to wait before enabling biased locking") \ 940 range(0, (intx)(max_jint-(max_jint%PeriodicTask::interval_gran))) \ 941 constraint(BiasedLockingStartupDelayFunc,AfterErgo) \ 942 \ 943 diagnostic(bool, PrintBiasedLockingStatistics, false, \ 944 "Print statistics of biased locking in JVM") \ 945 \ 946 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ 947 "Threshold of number of revocations per type to try to " \ 948 "rebias all objects in the heap of that type") \ 949 range(0, max_intx) \ 950 constraint(BiasedLockingBulkRebiasThresholdFunc,AfterErgo) \ 951 \ 952 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 953 "Threshold of number of revocations per type to permanently " \ 954 "revoke biases of all objects in the heap of that type") \ 955 range(0, max_intx) \ 956 constraint(BiasedLockingBulkRevokeThresholdFunc,AfterErgo) \ 957 \ 958 product(intx, BiasedLockingDecayTime, 25000, \ 959 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 960 "type after previous bulk rebias") \ 961 range(500, max_intx) \ 962 constraint(BiasedLockingDecayTimeFunc,AfterErgo) \ 963 \ 964 product(bool, ExitOnOutOfMemoryError, false, \ 965 "JVM exits on the first occurrence of an out-of-memory error") \ 966 \ 967 product(bool, CrashOnOutOfMemoryError, false, \ 968 "JVM aborts, producing an error log and core/mini dump, on the " \ 969 "first occurrence of an out-of-memory error") \ 970 \ 971 /* tracing */ \ 972 \ 973 develop(bool, StressRewriter, false, \ 974 "Stress linktime bytecode rewriting") \ 975 \ 976 product(ccstr, TraceJVMTI, NULL, \ 977 "Trace flags for JVMTI functions and events") \ 978 \ 979 /* This option can change an EMCP method into an obsolete method. */ \ 980 /* This can affect tests that except specific methods to be EMCP. */ \ 981 /* This option should be used with caution. */ \ 982 product(bool, StressLdcRewrite, false, \ 983 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 984 \ 985 /* change to false by default sometime after Mustang */ \ 986 product(bool, VerifyMergedCPBytecodes, true, \ 987 "Verify bytecodes after RedefineClasses constant pool merging") \ 988 \ 989 develop(bool, TraceBytecodes, false, \ 990 "Trace bytecode execution") \ 991 \ 992 develop(bool, TraceICs, false, \ 993 "Trace inline cache changes") \ 994 \ 995 notproduct(bool, TraceInvocationCounterOverflow, false, \ 996 "Trace method invocation counter overflow") \ 997 \ 998 develop(bool, TraceInlineCacheClearing, false, \ 999 "Trace clearing of inline caches in nmethods") \ 1000 \ 1001 develop(bool, TraceDependencies, false, \ 1002 "Trace dependencies") \ 1003 \ 1004 develop(bool, VerifyDependencies, trueInDebug, \ 1005 "Exercise and verify the compilation dependency mechanism") \ 1006 \ 1007 develop(bool, TraceNewOopMapGeneration, false, \ 1008 "Trace OopMapGeneration") \ 1009 \ 1010 develop(bool, TraceNewOopMapGenerationDetailed, false, \ 1011 "Trace OopMapGeneration: print detailed cell states") \ 1012 \ 1013 develop(bool, TimeOopMap, false, \ 1014 "Time calls to GenerateOopMap::compute_map() in sum") \ 1015 \ 1016 develop(bool, TimeOopMap2, false, \ 1017 "Time calls to GenerateOopMap::compute_map() individually") \ 1018 \ 1019 develop(bool, TraceOopMapRewrites, false, \ 1020 "Trace rewriting of method oops during oop map generation") \ 1021 \ 1022 develop(bool, TraceICBuffer, false, \ 1023 "Trace usage of IC buffer") \ 1024 \ 1025 develop(bool, TraceCompiledIC, false, \ 1026 "Trace changes of compiled IC") \ 1027 \ 1028 develop(bool, FLSVerifyDictionary, false, \ 1029 "Do lots of (expensive) FLS dictionary verification") \ 1030 \ 1031 \ 1032 notproduct(bool, CheckMemoryInitialization, false, \ 1033 "Check memory initialization") \ 1034 \ 1035 product(uintx, ProcessDistributionStride, 4, \ 1036 "Stride through processors when distributing processes") \ 1037 range(0, max_juint) \ 1038 \ 1039 develop(bool, TraceFinalizerRegistration, false, \ 1040 "Trace registration of final references") \ 1041 \ 1042 product(bool, IgnoreEmptyClassPaths, false, \ 1043 "Ignore empty path elements in -classpath") \ 1044 \ 1045 product(size_t, InitialBootClassLoaderMetaspaceSize, \ 1046 NOT_LP64(2200*K) LP64_ONLY(4*M), \ 1047 "Initial size of the boot class loader data metaspace") \ 1048 range(30*K, max_uintx/BytesPerWord) \ 1049 constraint(InitialBootClassLoaderMetaspaceSizeConstraintFunc, AfterErgo)\ 1050 \ 1051 product(bool, PrintHeapAtSIGBREAK, true, \ 1052 "Print heap layout in response to SIGBREAK") \ 1053 \ 1054 manageable(bool, PrintClassHistogram, false, \ 1055 "Print a histogram of class instances") \ 1056 \ 1057 develop(bool, IgnoreLibthreadGPFault, false, \ 1058 "Suppress workaround for libthread GP fault") \ 1059 \ 1060 experimental(double, ObjectCountCutOffPercent, 0.5, \ 1061 "The percentage of the used heap that the instances of a class " \ 1062 "must occupy for the class to generate a trace event") \ 1063 range(0.0, 100.0) \ 1064 \ 1065 /* JVMTI heap profiling */ \ 1066 \ 1067 diagnostic(bool, TraceJVMTIObjectTagging, false, \ 1068 "Trace JVMTI object tagging calls") \ 1069 \ 1070 diagnostic(bool, VerifyBeforeIteration, false, \ 1071 "Verify memory system before JVMTI iteration") \ 1072 \ 1073 /* compiler interface */ \ 1074 \ 1075 develop(bool, CIPrintCompilerName, false, \ 1076 "when CIPrint is active, print the name of the active compiler") \ 1077 \ 1078 diagnostic(bool, CIPrintCompileQueue, false, \ 1079 "display the contents of the compile queue whenever a " \ 1080 "compilation is enqueued") \ 1081 \ 1082 develop(bool, CIPrintRequests, false, \ 1083 "display every request for compilation") \ 1084 \ 1085 product(bool, CITime, false, \ 1086 "collect timing information for compilation") \ 1087 \ 1088 develop(bool, CITimeVerbose, false, \ 1089 "be more verbose in compilation timings") \ 1090 \ 1091 develop(bool, CITimeEach, false, \ 1092 "display timing information after each successful compilation") \ 1093 \ 1094 develop(bool, CICountOSR, false, \ 1095 "use a separate counter when assigning ids to osr compilations") \ 1096 \ 1097 develop(bool, CICompileNatives, true, \ 1098 "compile native methods if supported by the compiler") \ 1099 \ 1100 develop_pd(bool, CICompileOSR, \ 1101 "compile on stack replacement methods if supported by the " \ 1102 "compiler") \ 1103 \ 1104 develop(bool, CIPrintMethodCodes, false, \ 1105 "print method bytecodes of the compiled code") \ 1106 \ 1107 develop(bool, CIPrintTypeFlow, false, \ 1108 "print the results of ciTypeFlow analysis") \ 1109 \ 1110 develop(bool, CITraceTypeFlow, false, \ 1111 "detailed per-bytecode tracing of ciTypeFlow analysis") \ 1112 \ 1113 develop(intx, OSROnlyBCI, -1, \ 1114 "OSR only at this bci. Negative values mean exclude that bci") \ 1115 \ 1116 /* compiler */ \ 1117 \ 1118 /* notice: the max range value here is max_jint, not max_intx */ \ 1119 /* because of overflow issue */ \ 1120 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ 1121 "Number of compiler threads to run") \ 1122 range(0, max_jint) \ 1123 constraint(CICompilerCountConstraintFunc, AfterErgo) \ 1124 \ 1125 product(bool, UseDynamicNumberOfCompilerThreads, true, \ 1126 "Dynamically choose the number of parallel compiler threads") \ 1127 \ 1128 diagnostic(bool, ReduceNumberOfCompilerThreads, true, \ 1129 "Reduce the number of parallel compiler threads when they " \ 1130 "are not used") \ 1131 \ 1132 diagnostic(bool, TraceCompilerThreads, false, \ 1133 "Trace creation and removal of compiler threads") \ 1134 \ 1135 develop(bool, InjectCompilerCreationFailure, false, \ 1136 "Inject thread creation failures for " \ 1137 "UseDynamicNumberOfCompilerThreads") \ 1138 \ 1139 product(intx, CompilationPolicyChoice, 0, \ 1140 "which compilation policy (0-2)") \ 1141 range(0, 2) \ 1142 \ 1143 develop(bool, UseStackBanging, true, \ 1144 "use stack banging for stack overflow checks (required for " \ 1145 "proper StackOverflow handling; disable only to measure cost " \ 1146 "of stackbanging)") \ 1147 \ 1148 develop(bool, UseStrictFP, true, \ 1149 "use strict fp if modifier strictfp is set") \ 1150 \ 1151 develop(bool, GenerateSynchronizationCode, true, \ 1152 "generate locking/unlocking code for synchronized methods and " \ 1153 "monitors") \ 1154 \ 1155 develop(bool, GenerateRangeChecks, true, \ 1156 "Generate range checks for array accesses") \ 1157 \ 1158 diagnostic_pd(bool, ImplicitNullChecks, \ 1159 "Generate code for implicit null checks") \ 1160 \ 1161 product_pd(bool, TrapBasedNullChecks, \ 1162 "Generate code for null checks that uses a cmp and trap " \ 1163 "instruction raising SIGTRAP. This is only used if an access to" \ 1164 "null (+offset) will not raise a SIGSEGV, i.e.," \ 1165 "ImplicitNullChecks don't work (PPC64).") \ 1166 \ 1167 diagnostic(bool, EnableThreadSMRExtraValidityChecks, true, \ 1168 "Enable Thread SMR extra validity checks") \ 1169 \ 1170 diagnostic(bool, EnableThreadSMRStatistics, trueInDebug, \ 1171 "Enable Thread SMR Statistics") \ 1172 \ 1173 product(bool, Inline, true, \ 1174 "Enable inlining") \ 1175 \ 1176 product(bool, ClipInlining, true, \ 1177 "Clip inlining if aggregate method exceeds DesiredMethodLimit") \ 1178 \ 1179 develop(bool, UseCHA, true, \ 1180 "Enable CHA") \ 1181 \ 1182 product(bool, UseTypeProfile, true, \ 1183 "Check interpreter profile for historically monomorphic calls") \ 1184 \ 1185 diagnostic(bool, PrintInlining, false, \ 1186 "Print inlining optimizations") \ 1187 \ 1188 product(bool, UsePopCountInstruction, false, \ 1189 "Use population count instruction") \ 1190 \ 1191 develop(bool, EagerInitialization, false, \ 1192 "Eagerly initialize classes if possible") \ 1193 \ 1194 diagnostic(bool, LogTouchedMethods, false, \ 1195 "Log methods which have been ever touched in runtime") \ 1196 \ 1197 diagnostic(bool, PrintTouchedMethodsAtExit, false, \ 1198 "Print all methods that have been ever touched in runtime") \ 1199 \ 1200 develop(bool, TraceMethodReplacement, false, \ 1201 "Print when methods are replaced do to recompilation") \ 1202 \ 1203 develop(bool, PrintMethodFlushing, false, \ 1204 "Print the nmethods being flushed") \ 1205 \ 1206 diagnostic(bool, PrintMethodFlushingStatistics, false, \ 1207 "print statistics about method flushing") \ 1208 \ 1209 diagnostic(intx, HotMethodDetectionLimit, 100000, \ 1210 "Number of compiled code invocations after which " \ 1211 "the method is considered as hot by the flusher") \ 1212 range(1, max_jint) \ 1213 \ 1214 diagnostic(intx, MinPassesBeforeFlush, 10, \ 1215 "Minimum number of sweeper passes before an nmethod " \ 1216 "can be flushed") \ 1217 range(0, max_intx) \ 1218 \ 1219 product(bool, UseCodeAging, true, \ 1220 "Insert counter to detect warm methods") \ 1221 \ 1222 diagnostic(bool, StressCodeAging, false, \ 1223 "Start with counters compiled in") \ 1224 \ 1225 develop(bool, StressCodeBuffers, false, \ 1226 "Exercise code buffer expansion and other rare state changes") \ 1227 \ 1228 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ 1229 "Generate extra debugging information for non-safepoints in " \ 1230 "nmethods") \ 1231 \ 1232 product(bool, PrintVMOptions, false, \ 1233 "Print flags that appeared on the command line") \ 1234 \ 1235 product(bool, IgnoreUnrecognizedVMOptions, false, \ 1236 "Ignore unrecognized VM options") \ 1237 \ 1238 product(bool, PrintCommandLineFlags, false, \ 1239 "Print flags specified on command line or set by ergonomics") \ 1240 \ 1241 product(bool, PrintFlagsInitial, false, \ 1242 "Print all VM flags before argument processing and exit VM") \ 1243 \ 1244 product(bool, PrintFlagsFinal, false, \ 1245 "Print all VM flags after argument and ergonomic processing") \ 1246 \ 1247 notproduct(bool, PrintFlagsWithComments, false, \ 1248 "Print all VM flags with default values and descriptions and " \ 1249 "exit") \ 1250 \ 1251 product(bool, PrintFlagsRanges, false, \ 1252 "Print VM flags and their ranges and exit VM") \ 1253 \ 1254 diagnostic(bool, SerializeVMOutput, true, \ 1255 "Use a mutex to serialize output to tty and LogFile") \ 1256 \ 1257 diagnostic(bool, DisplayVMOutput, true, \ 1258 "Display all VM output on the tty, independently of LogVMOutput") \ 1259 \ 1260 diagnostic(bool, LogVMOutput, false, \ 1261 "Save VM output to LogFile") \ 1262 \ 1263 diagnostic(ccstr, LogFile, NULL, \ 1264 "If LogVMOutput or LogCompilation is on, save VM output to " \ 1265 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\ 1266 \ 1267 product(ccstr, ErrorFile, NULL, \ 1268 "If an error occurs, save the error data to this file " \ 1269 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ 1270 \ 1271 product(bool, ExtensiveErrorReports, \ 1272 PRODUCT_ONLY(false) NOT_PRODUCT(true), \ 1273 "Error reports are more extensive.") \ 1274 \ 1275 product(bool, DisplayVMOutputToStderr, false, \ 1276 "If DisplayVMOutput is true, display all VM output to stderr") \ 1277 \ 1278 product(bool, DisplayVMOutputToStdout, false, \ 1279 "If DisplayVMOutput is true, display all VM output to stdout") \ 1280 \ 1281 product(bool, UseHeavyMonitors, false, \ 1282 "use heavyweight instead of lightweight Java monitors") \ 1283 \ 1284 product(bool, PrintStringTableStatistics, false, \ 1285 "print statistics about the StringTable and SymbolTable") \ 1286 \ 1287 diagnostic(bool, VerifyStringTableAtExit, false, \ 1288 "verify StringTable contents at exit") \ 1289 \ 1290 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ 1291 "print histogram of the symbol table") \ 1292 \ 1293 notproduct(bool, ExitVMOnVerifyError, false, \ 1294 "standard exit from VM if bytecode verify error " \ 1295 "(only in debug mode)") \ 1296 \ 1297 diagnostic(ccstr, AbortVMOnException, NULL, \ 1298 "Call fatal if this exception is thrown. Example: " \ 1299 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ 1300 \ 1301 diagnostic(ccstr, AbortVMOnExceptionMessage, NULL, \ 1302 "Call fatal if the exception pointed by AbortVMOnException " \ 1303 "has this message") \ 1304 \ 1305 develop(bool, DebugVtables, false, \ 1306 "add debugging code to vtable dispatch") \ 1307 \ 1308 notproduct(bool, PrintVtableStats, false, \ 1309 "print vtables stats at end of run") \ 1310 \ 1311 develop(bool, TraceCreateZombies, false, \ 1312 "trace creation of zombie nmethods") \ 1313 \ 1314 notproduct(bool, IgnoreLockingAssertions, false, \ 1315 "disable locking assertions (for speed)") \ 1316 \ 1317 product(bool, RangeCheckElimination, true, \ 1318 "Eliminate range checks") \ 1319 \ 1320 develop_pd(bool, UncommonNullCast, \ 1321 "track occurrences of null in casts; adjust compiler tactics") \ 1322 \ 1323 develop(bool, TypeProfileCasts, true, \ 1324 "treat casts like calls for purposes of type profiling") \ 1325 \ 1326 develop(bool, DelayCompilationDuringStartup, true, \ 1327 "Delay invoking the compiler until main application class is " \ 1328 "loaded") \ 1329 \ 1330 develop(bool, FillDelaySlots, true, \ 1331 "Fill delay slots (on SPARC only)") \ 1332 \ 1333 develop(bool, TimeLivenessAnalysis, false, \ 1334 "Time computation of bytecode liveness analysis") \ 1335 \ 1336 develop(bool, TraceLivenessGen, false, \ 1337 "Trace the generation of liveness analysis information") \ 1338 \ 1339 notproduct(bool, TraceLivenessQuery, false, \ 1340 "Trace queries of liveness analysis information") \ 1341 \ 1342 notproduct(bool, CollectIndexSetStatistics, false, \ 1343 "Collect information about IndexSets") \ 1344 \ 1345 develop(bool, UseLoopSafepoints, true, \ 1346 "Generate Safepoint nodes in every loop") \ 1347 \ 1348 develop(intx, FastAllocateSizeLimit, 128*K, \ 1349 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ 1350 "Inline allocations larger than this in doublewords must go slow")\ 1351 \ 1352 product_pd(bool, CompactStrings, \ 1353 "Enable Strings to use single byte chars in backing store") \ 1354 \ 1355 product_pd(uintx, TypeProfileLevel, \ 1356 "=XYZ, with Z: Type profiling of arguments at call; " \ 1357 "Y: Type profiling of return value at call; " \ 1358 "X: Type profiling of parameters to methods; " \ 1359 "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \ 1360 constraint(TypeProfileLevelConstraintFunc, AfterErgo) \ 1361 \ 1362 product(intx, TypeProfileArgsLimit, 2, \ 1363 "max number of call arguments to consider for type profiling") \ 1364 range(0, 16) \ 1365 \ 1366 product(intx, TypeProfileParmsLimit, 2, \ 1367 "max number of incoming parameters to consider for type profiling"\ 1368 ", -1 for all") \ 1369 range(-1, 64) \ 1370 \ 1371 /* statistics */ \ 1372 develop(bool, CountCompiledCalls, false, \ 1373 "Count method invocations") \ 1374 \ 1375 notproduct(bool, CountRuntimeCalls, false, \ 1376 "Count VM runtime calls") \ 1377 \ 1378 develop(bool, CountJNICalls, false, \ 1379 "Count jni method invocations") \ 1380 \ 1381 notproduct(bool, CountJVMCalls, false, \ 1382 "Count jvm method invocations") \ 1383 \ 1384 notproduct(bool, CountRemovableExceptions, false, \ 1385 "Count exceptions that could be replaced by branches due to " \ 1386 "inlining") \ 1387 \ 1388 notproduct(bool, ICMissHistogram, false, \ 1389 "Produce histogram of IC misses") \ 1390 \ 1391 /* interpreter */ \ 1392 product_pd(bool, RewriteBytecodes, \ 1393 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ 1394 \ 1395 product_pd(bool, RewriteFrequentPairs, \ 1396 "Rewrite frequently used bytecode pairs into a single bytecode") \ 1397 \ 1398 diagnostic(bool, PrintInterpreter, false, \ 1399 "Print the generated interpreter code") \ 1400 \ 1401 product(bool, UseInterpreter, true, \ 1402 "Use interpreter for non-compiled methods") \ 1403 \ 1404 develop(bool, UseFastSignatureHandlers, true, \ 1405 "Use fast signature handlers for native calls") \ 1406 \ 1407 product(bool, UseLoopCounter, true, \ 1408 "Increment invocation counter on backward branch") \ 1409 \ 1410 product_pd(bool, UseOnStackReplacement, \ 1411 "Use on stack replacement, calls runtime if invoc. counter " \ 1412 "overflows in loop") \ 1413 \ 1414 notproduct(bool, TraceOnStackReplacement, false, \ 1415 "Trace on stack replacement") \ 1416 \ 1417 product_pd(bool, PreferInterpreterNativeStubs, \ 1418 "Use always interpreter stubs for native methods invoked via " \ 1419 "interpreter") \ 1420 \ 1421 develop(bool, CountBytecodes, false, \ 1422 "Count number of bytecodes executed") \ 1423 \ 1424 develop(bool, PrintBytecodeHistogram, false, \ 1425 "Print histogram of the executed bytecodes") \ 1426 \ 1427 develop(bool, PrintBytecodePairHistogram, false, \ 1428 "Print histogram of the executed bytecode pairs") \ 1429 \ 1430 diagnostic(bool, PrintSignatureHandlers, false, \ 1431 "Print code generated for native method signature handlers") \ 1432 \ 1433 develop(bool, VerifyOops, false, \ 1434 "Do plausibility checks for oops") \ 1435 \ 1436 develop(bool, CheckUnhandledOops, false, \ 1437 "Check for unhandled oops in VM code") \ 1438 \ 1439 develop(bool, VerifyJNIFields, trueInDebug, \ 1440 "Verify jfieldIDs for instance fields") \ 1441 \ 1442 notproduct(bool, VerifyJNIEnvThread, false, \ 1443 "Verify JNIEnv.thread == Thread::current() when entering VM " \ 1444 "from JNI") \ 1445 \ 1446 develop(bool, VerifyFPU, false, \ 1447 "Verify FPU state (check for NaN's, etc.)") \ 1448 \ 1449 develop(bool, VerifyThread, false, \ 1450 "Watch the thread register for corruption (SPARC only)") \ 1451 \ 1452 develop(bool, VerifyActivationFrameSize, false, \ 1453 "Verify that activation frame didn't become smaller than its " \ 1454 "minimal size") \ 1455 \ 1456 develop(bool, TraceFrequencyInlining, false, \ 1457 "Trace frequency based inlining") \ 1458 \ 1459 develop_pd(bool, InlineIntrinsics, \ 1460 "Inline intrinsics that can be statically resolved") \ 1461 \ 1462 product_pd(bool, ProfileInterpreter, \ 1463 "Profile at the bytecode level during interpretation") \ 1464 \ 1465 develop(bool, TraceProfileInterpreter, false, \ 1466 "Trace profiling at the bytecode level during interpretation. " \ 1467 "This outputs the profiling information collected to improve " \ 1468 "jit compilation.") \ 1469 \ 1470 develop_pd(bool, ProfileTraps, \ 1471 "Profile deoptimization traps at the bytecode level") \ 1472 \ 1473 product(intx, ProfileMaturityPercentage, 20, \ 1474 "number of method invocations/branches (expressed as % of " \ 1475 "CompileThreshold) before using the method's profile") \ 1476 range(0, 100) \ 1477 \ 1478 diagnostic(bool, PrintMethodData, false, \ 1479 "Print the results of +ProfileInterpreter at end of run") \ 1480 \ 1481 develop(bool, VerifyDataPointer, trueInDebug, \ 1482 "Verify the method data pointer during interpreter profiling") \ 1483 \ 1484 develop(bool, VerifyCompiledCode, false, \ 1485 "Include miscellaneous runtime verifications in nmethod code; " \ 1486 "default off because it disturbs nmethod size heuristics") \ 1487 \ 1488 notproduct(bool, CrashGCForDumpingJavaThread, false, \ 1489 "Manually make GC thread crash then dump java stack trace; " \ 1490 "Test only") \ 1491 \ 1492 /* compilation */ \ 1493 product(bool, UseCompiler, true, \ 1494 "Use Just-In-Time compilation") \ 1495 \ 1496 develop(bool, TraceCompilationPolicy, false, \ 1497 "Trace compilation policy") \ 1498 \ 1499 develop(bool, TimeCompilationPolicy, false, \ 1500 "Time the compilation policy") \ 1501 \ 1502 product(bool, UseCounterDecay, true, \ 1503 "Adjust recompilation counters") \ 1504 \ 1505 develop(intx, CounterHalfLifeTime, 30, \ 1506 "Half-life time of invocation counters (in seconds)") \ 1507 \ 1508 develop(intx, CounterDecayMinIntervalLength, 500, \ 1509 "The minimum interval (in milliseconds) between invocation of " \ 1510 "CounterDecay") \ 1511 \ 1512 product(bool, AlwaysCompileLoopMethods, false, \ 1513 "When using recompilation, never interpret methods " \ 1514 "containing loops") \ 1515 \ 1516 product(bool, DontCompileHugeMethods, true, \ 1517 "Do not compile methods > HugeMethodLimit") \ 1518 \ 1519 /* Bytecode escape analysis estimation. */ \ 1520 product(bool, EstimateArgEscape, true, \ 1521 "Analyze bytecodes to estimate escape state of arguments") \ 1522 \ 1523 product(intx, BCEATraceLevel, 0, \ 1524 "How much tracing to do of bytecode escape analysis estimates " \ 1525 "(0-3)") \ 1526 range(0, 3) \ 1527 \ 1528 product(intx, MaxBCEAEstimateLevel, 5, \ 1529 "Maximum number of nested calls that are analyzed by BC EA") \ 1530 range(0, max_jint) \ 1531 \ 1532 product(intx, MaxBCEAEstimateSize, 150, \ 1533 "Maximum bytecode size of a method to be analyzed by BC EA") \ 1534 range(0, max_jint) \ 1535 \ 1536 product(intx, AllocatePrefetchStyle, 1, \ 1537 "0 = no prefetch, " \ 1538 "1 = generate prefetch instructions for each allocation, " \ 1539 "2 = use TLAB watermark to gate allocation prefetch, " \ 1540 "3 = generate one prefetch instruction per cache line") \ 1541 range(0, 3) \ 1542 \ 1543 product(intx, AllocatePrefetchDistance, -1, \ 1544 "Distance to prefetch ahead of allocation pointer. " \ 1545 "-1: use system-specific value (automatically determined") \ 1546 constraint(AllocatePrefetchDistanceConstraintFunc, AfterMemoryInit)\ 1547 \ 1548 product(intx, AllocatePrefetchLines, 3, \ 1549 "Number of lines to prefetch ahead of array allocation pointer") \ 1550 range(1, 64) \ 1551 \ 1552 product(intx, AllocateInstancePrefetchLines, 1, \ 1553 "Number of lines to prefetch ahead of instance allocation " \ 1554 "pointer") \ 1555 range(1, 64) \ 1556 \ 1557 product(intx, AllocatePrefetchStepSize, 16, \ 1558 "Step size in bytes of sequential prefetch instructions") \ 1559 range(1, 512) \ 1560 constraint(AllocatePrefetchStepSizeConstraintFunc,AfterMemoryInit)\ 1561 \ 1562 product(intx, AllocatePrefetchInstr, 0, \ 1563 "Select instruction to prefetch ahead of allocation pointer") \ 1564 constraint(AllocatePrefetchInstrConstraintFunc, AfterMemoryInit) \ 1565 \ 1566 /* deoptimization */ \ 1567 develop(bool, TraceDeoptimization, false, \ 1568 "Trace deoptimization") \ 1569 \ 1570 develop(bool, PrintDeoptimizationDetails, false, \ 1571 "Print more information about deoptimization") \ 1572 \ 1573 develop(bool, DebugDeoptimization, false, \ 1574 "Tracing various information while debugging deoptimization") \ 1575 \ 1576 product(intx, SelfDestructTimer, 0, \ 1577 "Will cause VM to terminate after a given time (in minutes) " \ 1578 "(0 means off)") \ 1579 range(0, max_intx) \ 1580 \ 1581 product(intx, MaxJavaStackTraceDepth, 1024, \ 1582 "The maximum number of lines in the stack trace for Java " \ 1583 "exceptions (0 means all)") \ 1584 range(0, max_jint/2) \ 1585 \ 1586 /* notice: the max range value here is max_jint, not max_intx */ \ 1587 /* because of overflow issue */ \ 1588 diagnostic(intx, GuaranteedSafepointInterval, 1000, \ 1589 "Guarantee a safepoint (at least) every so many milliseconds " \ 1590 "(0 means none)") \ 1591 range(0, max_jint) \ 1592 \ 1593 product(intx, SafepointTimeoutDelay, 10000, \ 1594 "Delay in milliseconds for option SafepointTimeout") \ 1595 LP64_ONLY(range(0, max_intx/MICROUNITS)) \ 1596 NOT_LP64(range(0, max_intx)) \ 1597 \ 1598 product(intx, NmethodSweepActivity, 10, \ 1599 "Removes cold nmethods from code cache if > 0. Higher values " \ 1600 "result in more aggressive sweeping") \ 1601 range(0, 2000) \ 1602 \ 1603 notproduct(bool, LogSweeper, false, \ 1604 "Keep a ring buffer of sweeper activity") \ 1605 \ 1606 notproduct(intx, SweeperLogEntries, 1024, \ 1607 "Number of records in the ring buffer of sweeper activity") \ 1608 \ 1609 notproduct(intx, MemProfilingInterval, 500, \ 1610 "Time between each invocation of the MemProfiler") \ 1611 \ 1612 develop(intx, MallocCatchPtr, -1, \ 1613 "Hit breakpoint when mallocing/freeing this pointer") \ 1614 \ 1615 notproduct(ccstrlist, SuppressErrorAt, "", \ 1616 "List of assertions (file:line) to muzzle") \ 1617 \ 1618 develop(intx, StackPrintLimit, 100, \ 1619 "number of stack frames to print in VM-level stack dump") \ 1620 \ 1621 notproduct(intx, MaxElementPrintSize, 256, \ 1622 "maximum number of elements to print") \ 1623 \ 1624 notproduct(intx, MaxSubklassPrintSize, 4, \ 1625 "maximum number of subklasses to print when printing klass") \ 1626 \ 1627 product(intx, MaxInlineLevel, 9, \ 1628 "maximum number of nested calls that are inlined") \ 1629 range(0, max_jint) \ 1630 \ 1631 product(intx, MaxRecursiveInlineLevel, 1, \ 1632 "maximum number of nested recursive calls that are inlined") \ 1633 range(0, max_jint) \ 1634 \ 1635 develop(intx, MaxForceInlineLevel, 100, \ 1636 "maximum number of nested calls that are forced for inlining " \ 1637 "(using CompileCommand or marked w/ @ForceInline)") \ 1638 range(0, max_jint) \ 1639 \ 1640 product_pd(intx, InlineSmallCode, \ 1641 "Only inline already compiled methods if their code size is " \ 1642 "less than this") \ 1643 range(0, max_jint) \ 1644 \ 1645 product(intx, MaxInlineSize, 35, \ 1646 "The maximum bytecode size of a method to be inlined") \ 1647 range(0, max_jint) \ 1648 \ 1649 product_pd(intx, FreqInlineSize, \ 1650 "The maximum bytecode size of a frequent method to be inlined") \ 1651 range(0, max_jint) \ 1652 \ 1653 product(intx, MaxTrivialSize, 6, \ 1654 "The maximum bytecode size of a trivial method to be inlined") \ 1655 range(0, max_jint) \ 1656 \ 1657 product(intx, MinInliningThreshold, 250, \ 1658 "The minimum invocation count a method needs to have to be " \ 1659 "inlined") \ 1660 range(0, max_jint) \ 1661 \ 1662 develop(intx, MethodHistogramCutoff, 100, \ 1663 "The cutoff value for method invocation histogram (+CountCalls)") \ 1664 \ 1665 diagnostic(intx, ProfilerNumberOfInterpretedMethods, 25, \ 1666 "Number of interpreted methods to show in profile") \ 1667 \ 1668 diagnostic(intx, ProfilerNumberOfCompiledMethods, 25, \ 1669 "Number of compiled methods to show in profile") \ 1670 \ 1671 diagnostic(intx, ProfilerNumberOfStubMethods, 25, \ 1672 "Number of stub methods to show in profile") \ 1673 \ 1674 diagnostic(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ 1675 "Number of runtime stub nodes to show in profile") \ 1676 \ 1677 product(intx, ProfileIntervalsTicks, 100, \ 1678 "Number of ticks between printing of interval profile " \ 1679 "(+ProfileIntervals)") \ 1680 range(0, max_intx) \ 1681 \ 1682 develop(intx, DontYieldALotInterval, 10, \ 1683 "Interval between which yields will be dropped (milliseconds)") \ 1684 \ 1685 develop(intx, ProfilerPCTickThreshold, 15, \ 1686 "Number of ticks in a PC buckets to be a hotspot") \ 1687 \ 1688 notproduct(intx, DeoptimizeALotInterval, 5, \ 1689 "Number of exits until DeoptimizeALot kicks in") \ 1690 \ 1691 notproduct(intx, ZombieALotInterval, 5, \ 1692 "Number of exits until ZombieALot kicks in") \ 1693 \ 1694 diagnostic(uintx, MallocMaxTestWords, 0, \ 1695 "If non-zero, maximum number of words that malloc/realloc can " \ 1696 "allocate (for testing only)") \ 1697 range(0, max_uintx) \ 1698 \ 1699 product(intx, TypeProfileWidth, 2, \ 1700 "Number of receiver types to record in call/cast profile") \ 1701 range(0, 8) \ 1702 \ 1703 develop(intx, BciProfileWidth, 2, \ 1704 "Number of return bci's to record in ret profile") \ 1705 \ 1706 product(intx, PerMethodRecompilationCutoff, 400, \ 1707 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ 1708 range(-1, max_intx) \ 1709 \ 1710 product(intx, PerBytecodeRecompilationCutoff, 200, \ 1711 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ 1712 range(-1, max_intx) \ 1713 \ 1714 product(intx, PerMethodTrapLimit, 100, \ 1715 "Limit on traps (of one kind) in a method (includes inlines)") \ 1716 range(0, max_jint) \ 1717 \ 1718 experimental(intx, PerMethodSpecTrapLimit, 5000, \ 1719 "Limit on speculative traps (of one kind) in a method " \ 1720 "(includes inlines)") \ 1721 range(0, max_jint) \ 1722 \ 1723 product(intx, PerBytecodeTrapLimit, 4, \ 1724 "Limit on traps (of one kind) at a particular BCI") \ 1725 range(0, max_jint) \ 1726 \ 1727 experimental(intx, SpecTrapLimitExtraEntries, 3, \ 1728 "Extra method data trap entries for speculation") \ 1729 \ 1730 develop(intx, InlineFrequencyRatio, 20, \ 1731 "Ratio of call site execution to caller method invocation") \ 1732 range(0, max_jint) \ 1733 \ 1734 diagnostic_pd(intx, InlineFrequencyCount, \ 1735 "Count of call site execution necessary to trigger frequent " \ 1736 "inlining") \ 1737 range(0, max_jint) \ 1738 \ 1739 develop(intx, InlineThrowCount, 50, \ 1740 "Force inlining of interpreted methods that throw this often") \ 1741 range(0, max_jint) \ 1742 \ 1743 develop(intx, InlineThrowMaxSize, 200, \ 1744 "Force inlining of throwing methods smaller than this") \ 1745 range(0, max_jint) \ 1746 \ 1747 develop(intx, ProfilerNodeSize, 1024, \ 1748 "Size in K to allocate for the Profile Nodes of each thread") \ 1749 range(0, 1024) \ 1750 \ 1751 product_pd(size_t, MetaspaceSize, \ 1752 "Initial threshold (in bytes) at which a garbage collection " \ 1753 "is done to reduce Metaspace usage") \ 1754 constraint(MetaspaceSizeConstraintFunc,AfterErgo) \ 1755 \ 1756 product(size_t, MaxMetaspaceSize, max_uintx, \ 1757 "Maximum size of Metaspaces (in bytes)") \ 1758 constraint(MaxMetaspaceSizeConstraintFunc,AfterErgo) \ 1759 \ 1760 product(size_t, CompressedClassSpaceSize, 1*G, \ 1761 "Maximum size of class area in Metaspace when compressed " \ 1762 "class pointers are used") \ 1763 range(1*M, 3*G) \ 1764 \ 1765 manageable(uintx, MinHeapFreeRatio, 40, \ 1766 "The minimum percentage of heap free after GC to avoid expansion."\ 1767 " For most GCs this applies to the old generation. In G1 and" \ 1768 " ParallelGC it applies to the whole heap.") \ 1769 range(0, 100) \ 1770 constraint(MinHeapFreeRatioConstraintFunc,AfterErgo) \ 1771 \ 1772 manageable(uintx, MaxHeapFreeRatio, 70, \ 1773 "The maximum percentage of heap free after GC to avoid shrinking."\ 1774 " For most GCs this applies to the old generation. In G1 and" \ 1775 " ParallelGC it applies to the whole heap.") \ 1776 range(0, 100) \ 1777 constraint(MaxHeapFreeRatioConstraintFunc,AfterErgo) \ 1778 \ 1779 product(bool, ShrinkHeapInSteps, true, \ 1780 "When disabled, informs the GC to shrink the java heap directly" \ 1781 " to the target size at the next full GC rather than requiring" \ 1782 " smaller steps during multiple full GCs.") \ 1783 \ 1784 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ 1785 "Number of milliseconds per MB of free space in the heap") \ 1786 range(0, max_intx) \ 1787 constraint(SoftRefLRUPolicyMSPerMBConstraintFunc,AfterMemoryInit) \ 1788 \ 1789 product(size_t, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ 1790 "The minimum change in heap space due to GC (in bytes)") \ 1791 range(0, max_uintx) \ 1792 \ 1793 product(size_t, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ 1794 "The minimum expansion of Metaspace (in bytes)") \ 1795 range(0, max_uintx) \ 1796 \ 1797 product(uintx, MaxMetaspaceFreeRatio, 70, \ 1798 "The maximum percentage of Metaspace free after GC to avoid " \ 1799 "shrinking") \ 1800 range(0, 100) \ 1801 constraint(MaxMetaspaceFreeRatioConstraintFunc,AfterErgo) \ 1802 \ 1803 product(uintx, MinMetaspaceFreeRatio, 40, \ 1804 "The minimum percentage of Metaspace free after GC to avoid " \ 1805 "expansion") \ 1806 range(0, 99) \ 1807 constraint(MinMetaspaceFreeRatioConstraintFunc,AfterErgo) \ 1808 \ 1809 product(size_t, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 1810 "The maximum expansion of Metaspace without full GC (in bytes)") \ 1811 range(0, max_uintx) \ 1812 \ 1813 /* stack parameters */ \ 1814 product_pd(intx, StackYellowPages, \ 1815 "Number of yellow zone (recoverable overflows) pages of size " \ 1816 "4KB. If pages are bigger yellow zone is aligned up.") \ 1817 range(MIN_STACK_YELLOW_PAGES, (DEFAULT_STACK_YELLOW_PAGES+5)) \ 1818 \ 1819 product_pd(intx, StackRedPages, \ 1820 "Number of red zone (unrecoverable overflows) pages of size " \ 1821 "4KB. If pages are bigger red zone is aligned up.") \ 1822 range(MIN_STACK_RED_PAGES, (DEFAULT_STACK_RED_PAGES+2)) \ 1823 \ 1824 product_pd(intx, StackReservedPages, \ 1825 "Number of reserved zone (reserved to annotated methods) pages" \ 1826 " of size 4KB. If pages are bigger reserved zone is aligned up.") \ 1827 range(MIN_STACK_RESERVED_PAGES, (DEFAULT_STACK_RESERVED_PAGES+10))\ 1828 \ 1829 product(bool, RestrictReservedStack, true, \ 1830 "Restrict @ReservedStackAccess to trusted classes") \ 1831 \ 1832 /* greater stack shadow pages can't generate instruction to bang stack */ \ 1833 product_pd(intx, StackShadowPages, \ 1834 "Number of shadow zone (for overflow checking) pages of size " \ 1835 "4KB. If pages are bigger shadow zone is aligned up. " \ 1836 "This should exceed the depth of the VM and native call stack.") \ 1837 range(MIN_STACK_SHADOW_PAGES, (DEFAULT_STACK_SHADOW_PAGES+30)) \ 1838 \ 1839 product_pd(intx, ThreadStackSize, \ 1840 "Thread Stack Size (in Kbytes)") \ 1841 range(0, 1 * M) \ 1842 \ 1843 product_pd(intx, VMThreadStackSize, \ 1844 "Non-Java Thread Stack Size (in Kbytes)") \ 1845 range(0, max_intx/(1 * K)) \ 1846 \ 1847 product_pd(intx, CompilerThreadStackSize, \ 1848 "Compiler Thread Stack Size (in Kbytes)") \ 1849 range(0, max_intx/(1 * K)) \ 1850 \ 1851 develop_pd(size_t, JVMInvokeMethodSlack, \ 1852 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ 1853 \ 1854 /* code cache parameters */ \ 1855 develop_pd(uintx, CodeCacheSegmentSize, \ 1856 "Code cache segment size (in bytes) - smallest unit of " \ 1857 "allocation") \ 1858 range(1, 1024) \ 1859 constraint(CodeCacheSegmentSizeConstraintFunc, AfterErgo) \ 1860 \ 1861 develop_pd(intx, CodeEntryAlignment, \ 1862 "Code entry alignment for generated code (in bytes)") \ 1863 constraint(CodeEntryAlignmentConstraintFunc, AfterErgo) \ 1864 \ 1865 product_pd(intx, OptoLoopAlignment, \ 1866 "Align inner loops to zero relative to this modulus") \ 1867 range(1, 16) \ 1868 constraint(OptoLoopAlignmentConstraintFunc, AfterErgo) \ 1869 \ 1870 product_pd(uintx, InitialCodeCacheSize, \ 1871 "Initial code cache size (in bytes)") \ 1872 range(os::vm_page_size(), max_uintx) \ 1873 \ 1874 develop_pd(uintx, CodeCacheMinimumUseSpace, \ 1875 "Minimum code cache size (in bytes) required to start VM.") \ 1876 range(0, max_uintx) \ 1877 \ 1878 product(bool, SegmentedCodeCache, false, \ 1879 "Use a segmented code cache") \ 1880 \ 1881 product_pd(uintx, ReservedCodeCacheSize, \ 1882 "Reserved code cache size (in bytes) - maximum code cache size") \ 1883 range(os::vm_page_size(), max_uintx) \ 1884 \ 1885 product_pd(uintx, NonProfiledCodeHeapSize, \ 1886 "Size of code heap with non-profiled methods (in bytes)") \ 1887 range(0, max_uintx) \ 1888 \ 1889 product_pd(uintx, ProfiledCodeHeapSize, \ 1890 "Size of code heap with profiled methods (in bytes)") \ 1891 range(0, max_uintx) \ 1892 \ 1893 product_pd(uintx, NonNMethodCodeHeapSize, \ 1894 "Size of code heap with non-nmethods (in bytes)") \ 1895 range(os::vm_page_size(), max_uintx) \ 1896 \ 1897 product_pd(uintx, CodeCacheExpansionSize, \ 1898 "Code cache expansion size (in bytes)") \ 1899 range(32*K, max_uintx) \ 1900 \ 1901 diagnostic_pd(uintx, CodeCacheMinBlockLength, \ 1902 "Minimum number of segments in a code cache block") \ 1903 range(1, 100) \ 1904 \ 1905 notproduct(bool, ExitOnFullCodeCache, false, \ 1906 "Exit the VM if we fill the code cache") \ 1907 \ 1908 product(bool, UseCodeCacheFlushing, true, \ 1909 "Remove cold/old nmethods from the code cache") \ 1910 \ 1911 product(uintx, StartAggressiveSweepingAt, 10, \ 1912 "Start aggressive sweeping if X[%] of the code cache is free." \ 1913 "Segmented code cache: X[%] of the non-profiled heap." \ 1914 "Non-segmented code cache: X[%] of the total code cache") \ 1915 range(0, 100) \ 1916 \ 1917 /* AOT parameters */ \ 1918 product(bool, UseAOT, AOT_ONLY(true) NOT_AOT(false), \ 1919 "Use AOT compiled files") \ 1920 \ 1921 product(ccstrlist, AOTLibrary, NULL, \ 1922 "AOT library") \ 1923 \ 1924 product(bool, PrintAOT, false, \ 1925 "Print used AOT klasses and methods") \ 1926 \ 1927 notproduct(bool, PrintAOTStatistics, false, \ 1928 "Print AOT statistics") \ 1929 \ 1930 diagnostic(bool, UseAOTStrictLoading, false, \ 1931 "Exit the VM if any of the AOT libraries has invalid config") \ 1932 \ 1933 product(bool, CalculateClassFingerprint, false, \ 1934 "Calculate class fingerprint") \ 1935 \ 1936 /* interpreter debugging */ \ 1937 develop(intx, BinarySwitchThreshold, 5, \ 1938 "Minimal number of lookupswitch entries for rewriting to binary " \ 1939 "switch") \ 1940 \ 1941 develop(intx, StopInterpreterAt, 0, \ 1942 "Stop interpreter execution at specified bytecode number") \ 1943 \ 1944 develop(intx, TraceBytecodesAt, 0, \ 1945 "Trace bytecodes starting with specified bytecode number") \ 1946 \ 1947 /* compiler interface */ \ 1948 develop(intx, CIStart, 0, \ 1949 "The id of the first compilation to permit") \ 1950 \ 1951 develop(intx, CIStop, max_jint, \ 1952 "The id of the last compilation to permit") \ 1953 \ 1954 develop(intx, CIStartOSR, 0, \ 1955 "The id of the first osr compilation to permit " \ 1956 "(CICountOSR must be on)") \ 1957 \ 1958 develop(intx, CIStopOSR, max_jint, \ 1959 "The id of the last osr compilation to permit " \ 1960 "(CICountOSR must be on)") \ 1961 \ 1962 develop(intx, CIBreakAtOSR, -1, \ 1963 "The id of osr compilation to break at") \ 1964 \ 1965 develop(intx, CIBreakAt, -1, \ 1966 "The id of compilation to break at") \ 1967 \ 1968 product(ccstrlist, CompileOnly, "", \ 1969 "List of methods (pkg/class.name) to restrict compilation to") \ 1970 \ 1971 product(ccstr, CompileCommandFile, NULL, \ 1972 "Read compiler commands from this file [.hotspot_compiler]") \ 1973 \ 1974 diagnostic(ccstr, CompilerDirectivesFile, NULL, \ 1975 "Read compiler directives from this file") \ 1976 \ 1977 product(ccstrlist, CompileCommand, "", \ 1978 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ 1979 \ 1980 develop(bool, ReplayCompiles, false, \ 1981 "Enable replay of compilations from ReplayDataFile") \ 1982 \ 1983 product(ccstr, ReplayDataFile, NULL, \ 1984 "File containing compilation replay information" \ 1985 "[default: ./replay_pid%p.log] (%p replaced with pid)") \ 1986 \ 1987 product(ccstr, InlineDataFile, NULL, \ 1988 "File containing inlining replay information" \ 1989 "[default: ./inline_pid%p.log] (%p replaced with pid)") \ 1990 \ 1991 develop(intx, ReplaySuppressInitializers, 2, \ 1992 "Control handling of class initialization during replay: " \ 1993 "0 - don't do anything special; " \ 1994 "1 - treat all class initializers as empty; " \ 1995 "2 - treat class initializers for application classes as empty; " \ 1996 "3 - allow all class initializers to run during bootstrap but " \ 1997 " pretend they are empty after starting replay") \ 1998 range(0, 3) \ 1999 \ 2000 develop(bool, ReplayIgnoreInitErrors, false, \ 2001 "Ignore exceptions thrown during initialization for replay") \ 2002 \ 2003 product(bool, DumpReplayDataOnError, true, \ 2004 "Record replay data for crashing compiler threads") \ 2005 \ 2006 product(bool, CICompilerCountPerCPU, false, \ 2007 "1 compiler thread for log(N CPUs)") \ 2008 \ 2009 develop(intx, CIFireOOMAt, -1, \ 2010 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ 2011 "(non-negative value throws OOM after this many CI accesses " \ 2012 "in each compile)") \ 2013 notproduct(intx, CICrashAt, -1, \ 2014 "id of compilation to trigger assert in compiler thread for " \ 2015 "the purpose of testing, e.g. generation of replay data") \ 2016 notproduct(bool, CIObjectFactoryVerify, false, \ 2017 "enable potentially expensive verification in ciObjectFactory") \ 2018 \ 2019 diagnostic(bool, AbortVMOnCompilationFailure, false, \ 2020 "Abort VM when method had failed to compile.") \ 2021 \ 2022 /* Priorities */ \ 2023 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ 2024 \ 2025 product(intx, ThreadPriorityPolicy, 0, \ 2026 "0 : Normal. "\ 2027 " VM chooses priorities that are appropriate for normal "\ 2028 " applications. On Solaris NORM_PRIORITY and above are mapped "\ 2029 " to normal native priority. Java priorities below " \ 2030 " NORM_PRIORITY map to lower native priority values. On "\ 2031 " Windows applications are allowed to use higher native "\ 2032 " priorities. However, with ThreadPriorityPolicy=0, VM will "\ 2033 " not use the highest possible native priority, "\ 2034 " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\ 2035 " system threads. On Linux thread priorities are ignored "\ 2036 " because the OS does not support static priority in "\ 2037 " SCHED_OTHER scheduling class which is the only choice for "\ 2038 " non-root, non-realtime applications. "\ 2039 "1 : Aggressive. "\ 2040 " Java thread priorities map over to the entire range of "\ 2041 " native thread priorities. Higher Java thread priorities map "\ 2042 " to higher native thread priorities. This policy should be "\ 2043 " used with care, as sometimes it can cause performance "\ 2044 " degradation in the application and/or the entire system. On "\ 2045 " Linux this policy requires root privilege.") \ 2046 range(0, 1) \ 2047 \ 2048 product(bool, ThreadPriorityVerbose, false, \ 2049 "Print priority changes") \ 2050 \ 2051 product(intx, CompilerThreadPriority, -1, \ 2052 "The native priority at which compiler threads should run " \ 2053 "(-1 means no change)") \ 2054 range(min_jint, max_jint) \ 2055 constraint(CompilerThreadPriorityConstraintFunc, AfterErgo) \ 2056 \ 2057 product(intx, VMThreadPriority, -1, \ 2058 "The native priority at which the VM thread should run " \ 2059 "(-1 means no change)") \ 2060 range(-1, 127) \ 2061 \ 2062 product(intx, JavaPriority1_To_OSPriority, -1, \ 2063 "Map Java priorities to OS priorities") \ 2064 range(-1, 127) \ 2065 \ 2066 product(intx, JavaPriority2_To_OSPriority, -1, \ 2067 "Map Java priorities to OS priorities") \ 2068 range(-1, 127) \ 2069 \ 2070 product(intx, JavaPriority3_To_OSPriority, -1, \ 2071 "Map Java priorities to OS priorities") \ 2072 range(-1, 127) \ 2073 \ 2074 product(intx, JavaPriority4_To_OSPriority, -1, \ 2075 "Map Java priorities to OS priorities") \ 2076 range(-1, 127) \ 2077 \ 2078 product(intx, JavaPriority5_To_OSPriority, -1, \ 2079 "Map Java priorities to OS priorities") \ 2080 range(-1, 127) \ 2081 \ 2082 product(intx, JavaPriority6_To_OSPriority, -1, \ 2083 "Map Java priorities to OS priorities") \ 2084 range(-1, 127) \ 2085 \ 2086 product(intx, JavaPriority7_To_OSPriority, -1, \ 2087 "Map Java priorities to OS priorities") \ 2088 range(-1, 127) \ 2089 \ 2090 product(intx, JavaPriority8_To_OSPriority, -1, \ 2091 "Map Java priorities to OS priorities") \ 2092 range(-1, 127) \ 2093 \ 2094 product(intx, JavaPriority9_To_OSPriority, -1, \ 2095 "Map Java priorities to OS priorities") \ 2096 range(-1, 127) \ 2097 \ 2098 product(intx, JavaPriority10_To_OSPriority,-1, \ 2099 "Map Java priorities to OS priorities") \ 2100 range(-1, 127) \ 2101 \ 2102 experimental(bool, UseCriticalJavaThreadPriority, false, \ 2103 "Java thread priority 10 maps to critical scheduling priority") \ 2104 \ 2105 experimental(bool, UseCriticalCompilerThreadPriority, false, \ 2106 "Compiler thread(s) run at critical scheduling priority") \ 2107 \ 2108 experimental(bool, UseCriticalCMSThreadPriority, false, \ 2109 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ 2110 \ 2111 develop(intx, NewCodeParameter, 0, \ 2112 "Testing Only: Create a dedicated integer parameter before " \ 2113 "putback") \ 2114 \ 2115 /* new oopmap storage allocation */ \ 2116 develop(intx, MinOopMapAllocation, 8, \ 2117 "Minimum number of OopMap entries in an OopMapSet") \ 2118 \ 2119 /* Background Compilation */ \ 2120 develop(intx, LongCompileThreshold, 50, \ 2121 "Used with +TraceLongCompiles") \ 2122 \ 2123 /* recompilation */ \ 2124 product_pd(intx, CompileThreshold, \ 2125 "number of interpreted method invocations before (re-)compiling") \ 2126 constraint(CompileThresholdConstraintFunc, AfterErgo) \ 2127 \ 2128 product(double, CompileThresholdScaling, 1.0, \ 2129 "Factor to control when first compilation happens " \ 2130 "(both with and without tiered compilation): " \ 2131 "values greater than 1.0 delay counter overflow, " \ 2132 "values between 0 and 1.0 rush counter overflow, " \ 2133 "value of 1.0 leaves compilation thresholds unchanged " \ 2134 "value of 0.0 is equivalent to -Xint. " \ 2135 "" \ 2136 "Flag can be set as per-method option. " \ 2137 "If a value is specified for a method, compilation thresholds " \ 2138 "for that method are scaled by both the value of the global flag "\ 2139 "and the value of the per-method flag.") \ 2140 range(0.0, DBL_MAX) \ 2141 \ 2142 product(intx, Tier0InvokeNotifyFreqLog, 7, \ 2143 "Interpreter (tier 0) invocation notification frequency") \ 2144 range(0, 30) \ 2145 \ 2146 product(intx, Tier2InvokeNotifyFreqLog, 11, \ 2147 "C1 without MDO (tier 2) invocation notification frequency") \ 2148 range(0, 30) \ 2149 \ 2150 product(intx, Tier3InvokeNotifyFreqLog, 10, \ 2151 "C1 with MDO profiling (tier 3) invocation notification " \ 2152 "frequency") \ 2153 range(0, 30) \ 2154 \ 2155 product(intx, Tier23InlineeNotifyFreqLog, 20, \ 2156 "Inlinee invocation (tiers 2 and 3) notification frequency") \ 2157 range(0, 30) \ 2158 \ 2159 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ 2160 "Interpreter (tier 0) invocation notification frequency") \ 2161 range(0, 30) \ 2162 \ 2163 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ 2164 "C1 without MDO (tier 2) invocation notification frequency") \ 2165 range(0, 30) \ 2166 \ 2167 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ 2168 "C1 with MDO profiling (tier 3) invocation notification " \ 2169 "frequency") \ 2170 range(0, 30) \ 2171 \ 2172 product(intx, Tier2CompileThreshold, 0, \ 2173 "threshold at which tier 2 compilation is invoked") \ 2174 range(0, max_jint) \ 2175 \ 2176 product(intx, Tier2BackEdgeThreshold, 0, \ 2177 "Back edge threshold at which tier 2 compilation is invoked") \ 2178 range(0, max_jint) \ 2179 \ 2180 product(intx, Tier3InvocationThreshold, 200, \ 2181 "Compile if number of method invocations crosses this " \ 2182 "threshold") \ 2183 range(0, max_jint) \ 2184 \ 2185 product(intx, Tier3MinInvocationThreshold, 100, \ 2186 "Minimum invocation to compile at tier 3") \ 2187 range(0, max_jint) \ 2188 \ 2189 product(intx, Tier3CompileThreshold, 2000, \ 2190 "Threshold at which tier 3 compilation is invoked (invocation " \ 2191 "minimum must be satisfied)") \ 2192 range(0, max_jint) \ 2193 \ 2194 product(intx, Tier3BackEdgeThreshold, 60000, \ 2195 "Back edge threshold at which tier 3 OSR compilation is invoked") \ 2196 range(0, max_jint) \ 2197 \ 2198 product(intx, Tier3AOTInvocationThreshold, 10000, \ 2199 "Compile if number of method invocations crosses this " \ 2200 "threshold if coming from AOT") \ 2201 range(0, max_jint) \ 2202 \ 2203 product(intx, Tier3AOTMinInvocationThreshold, 1000, \ 2204 "Minimum invocation to compile at tier 3 if coming from AOT") \ 2205 range(0, max_jint) \ 2206 \ 2207 product(intx, Tier3AOTCompileThreshold, 15000, \ 2208 "Threshold at which tier 3 compilation is invoked (invocation " \ 2209 "minimum must be satisfied) if coming from AOT") \ 2210 range(0, max_jint) \ 2211 \ 2212 product(intx, Tier3AOTBackEdgeThreshold, 120000, \ 2213 "Back edge threshold at which tier 3 OSR compilation is invoked " \ 2214 "if coming from AOT") \ 2215 range(0, max_jint) \ 2216 \ 2217 product(intx, Tier4InvocationThreshold, 5000, \ 2218 "Compile if number of method invocations crosses this " \ 2219 "threshold") \ 2220 range(0, max_jint) \ 2221 \ 2222 product(intx, Tier4MinInvocationThreshold, 600, \ 2223 "Minimum invocation to compile at tier 4") \ 2224 range(0, max_jint) \ 2225 \ 2226 product(intx, Tier4CompileThreshold, 15000, \ 2227 "Threshold at which tier 4 compilation is invoked (invocation " \ 2228 "minimum must be satisfied") \ 2229 range(0, max_jint) \ 2230 \ 2231 product(intx, Tier4BackEdgeThreshold, 40000, \ 2232 "Back edge threshold at which tier 4 OSR compilation is invoked") \ 2233 range(0, max_jint) \ 2234 \ 2235 product(intx, Tier3DelayOn, 5, \ 2236 "If C2 queue size grows over this amount per compiler thread " \ 2237 "stop compiling at tier 3 and start compiling at tier 2") \ 2238 range(0, max_jint) \ 2239 \ 2240 product(intx, Tier3DelayOff, 2, \ 2241 "If C2 queue size is less than this amount per compiler thread " \ 2242 "allow methods compiled at tier 2 transition to tier 3") \ 2243 range(0, max_jint) \ 2244 \ 2245 product(intx, Tier3LoadFeedback, 5, \ 2246 "Tier 3 thresholds will increase twofold when C1 queue size " \ 2247 "reaches this amount per compiler thread") \ 2248 range(0, max_jint) \ 2249 \ 2250 product(intx, Tier4LoadFeedback, 3, \ 2251 "Tier 4 thresholds will increase twofold when C2 queue size " \ 2252 "reaches this amount per compiler thread") \ 2253 range(0, max_jint) \ 2254 \ 2255 product(intx, TieredCompileTaskTimeout, 50, \ 2256 "Kill compile task if method was not used within " \ 2257 "given timeout in milliseconds") \ 2258 range(0, max_intx) \ 2259 \ 2260 product(intx, TieredStopAtLevel, 4, \ 2261 "Stop at given compilation level") \ 2262 range(0, 4) \ 2263 \ 2264 product(intx, Tier0ProfilingStartPercentage, 200, \ 2265 "Start profiling in interpreter if the counters exceed tier 3 " \ 2266 "thresholds by the specified percentage") \ 2267 range(0, max_jint) \ 2268 \ 2269 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ 2270 "Increase the compile threshold for C1 compilation if the code " \ 2271 "cache is filled by the specified percentage") \ 2272 range(0, 99) \ 2273 \ 2274 product(intx, TieredRateUpdateMinTime, 1, \ 2275 "Minimum rate sampling interval (in milliseconds)") \ 2276 range(0, max_intx) \ 2277 \ 2278 product(intx, TieredRateUpdateMaxTime, 25, \ 2279 "Maximum rate sampling interval (in milliseconds)") \ 2280 range(0, max_intx) \ 2281 \ 2282 product_pd(bool, TieredCompilation, \ 2283 "Enable tiered compilation") \ 2284 \ 2285 product(bool, PrintTieredEvents, false, \ 2286 "Print tiered events notifications") \ 2287 \ 2288 product_pd(intx, OnStackReplacePercentage, \ 2289 "NON_TIERED number of method invocations/branches (expressed as " \ 2290 "% of CompileThreshold) before (re-)compiling OSR code") \ 2291 constraint(OnStackReplacePercentageConstraintFunc, AfterErgo) \ 2292 \ 2293 product(intx, InterpreterProfilePercentage, 33, \ 2294 "NON_TIERED number of method invocations/branches (expressed as " \ 2295 "% of CompileThreshold) before profiling in the interpreter") \ 2296 range(0, 100) \ 2297 \ 2298 develop(intx, MaxRecompilationSearchLength, 10, \ 2299 "The maximum number of frames to inspect when searching for " \ 2300 "recompilee") \ 2301 \ 2302 develop(intx, MaxInterpretedSearchLength, 3, \ 2303 "The maximum number of interpreted frames to skip when searching "\ 2304 "for recompilee") \ 2305 \ 2306 develop(intx, DesiredMethodLimit, 8000, \ 2307 "The desired maximum method size (in bytecodes) after inlining") \ 2308 \ 2309 develop(intx, HugeMethodLimit, 8000, \ 2310 "Don't compile methods larger than this if " \ 2311 "+DontCompileHugeMethods") \ 2312 \ 2313 /* New JDK 1.4 reflection implementation */ \ 2314 \ 2315 develop(intx, FastSuperclassLimit, 8, \ 2316 "Depth of hardwired instanceof accelerator array") \ 2317 \ 2318 /* Properties for Java libraries */ \ 2319 \ 2320 product(uint64_t, MaxDirectMemorySize, 0, \ 2321 "Maximum total size of NIO direct-buffer allocations") \ 2322 range(0, max_jlong) \ 2323 \ 2324 /* Flags used for temporary code during development */ \ 2325 \ 2326 diagnostic(bool, UseNewCode, false, \ 2327 "Testing Only: Use the new version while testing") \ 2328 \ 2329 diagnostic(bool, UseNewCode2, false, \ 2330 "Testing Only: Use the new version while testing") \ 2331 \ 2332 diagnostic(bool, UseNewCode3, false, \ 2333 "Testing Only: Use the new version while testing") \ 2334 \ 2335 /* flags for performance data collection */ \ 2336 \ 2337 product(bool, UsePerfData, true, \ 2338 "Flag to disable jvmstat instrumentation for performance testing "\ 2339 "and problem isolation purposes") \ 2340 \ 2341 product(bool, PerfDataSaveToFile, false, \ 2342 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 2343 \ 2344 product(ccstr, PerfDataSaveFile, NULL, \ 2345 "Save PerfData memory to the specified absolute pathname. " \ 2346 "The string %p in the file name (if present) " \ 2347 "will be replaced by pid") \ 2348 \ 2349 product(intx, PerfDataSamplingInterval, 50, \ 2350 "Data sampling interval (in milliseconds)") \ 2351 range(PeriodicTask::min_interval, max_jint) \ 2352 constraint(PerfDataSamplingIntervalFunc, AfterErgo) \ 2353 \ 2354 product(bool, PerfDisableSharedMem, false, \ 2355 "Store performance data in standard memory") \ 2356 \ 2357 product(intx, PerfDataMemorySize, 32*K, \ 2358 "Size of performance data memory region. Will be rounded " \ 2359 "up to a multiple of the native os page size.") \ 2360 range(128, 32*64*K) \ 2361 \ 2362 product(intx, PerfMaxStringConstLength, 1024, \ 2363 "Maximum PerfStringConstant string length before truncation") \ 2364 range(32, 32*K) \ 2365 \ 2366 product(bool, PerfAllowAtExitRegistration, false, \ 2367 "Allow registration of atexit() methods") \ 2368 \ 2369 product(bool, PerfBypassFileSystemCheck, false, \ 2370 "Bypass Win32 file system criteria checks (Windows Only)") \ 2371 \ 2372 product(intx, UnguardOnExecutionViolation, 0, \ 2373 "Unguard page and retry on no-execute fault (Win32 only) " \ 2374 "0=off, 1=conservative, 2=aggressive") \ 2375 range(0, 2) \ 2376 \ 2377 /* Serviceability Support */ \ 2378 \ 2379 product(bool, ManagementServer, false, \ 2380 "Create JMX Management Server") \ 2381 \ 2382 product(bool, DisableAttachMechanism, false, \ 2383 "Disable mechanism that allows tools to attach to this VM") \ 2384 \ 2385 product(bool, StartAttachListener, false, \ 2386 "Always start Attach Listener at VM startup") \ 2387 \ 2388 product(bool, EnableDynamicAgentLoading, true, \ 2389 "Allow tools to load agents with the attach mechanism") \ 2390 \ 2391 manageable(bool, PrintConcurrentLocks, false, \ 2392 "Print java.util.concurrent locks in thread dump") \ 2393 \ 2394 /* Shared spaces */ \ 2395 \ 2396 product(bool, UseSharedSpaces, true, \ 2397 "Use shared spaces for metadata") \ 2398 \ 2399 product(bool, VerifySharedSpaces, false, \ 2400 "Verify shared spaces (false for default archive, true for " \ 2401 "archive specified by -XX:SharedArchiveFile)") \ 2402 \ 2403 product(bool, RequireSharedSpaces, false, \ 2404 "Require shared spaces for metadata") \ 2405 \ 2406 product(bool, DumpSharedSpaces, false, \ 2407 "Special mode: JVM reads a class list, loads classes, builds " \ 2408 "shared spaces, and dumps the shared spaces to a file to be " \ 2409 "used in future JVM runs") \ 2410 \ 2411 product(bool, PrintSharedArchiveAndExit, false, \ 2412 "Print shared archive file contents") \ 2413 \ 2414 product(bool, PrintSharedDictionary, false, \ 2415 "If PrintSharedArchiveAndExit is true, also print the shared " \ 2416 "dictionary") \ 2417 \ 2418 product(size_t, SharedBaseAddress, LP64_ONLY(32*G) \ 2419 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ 2420 "Address to allocate shared memory region for class data") \ 2421 range(0, SIZE_MAX) \ 2422 \ 2423 product(ccstr, SharedArchiveConfigFile, NULL, \ 2424 "Data to add to the CDS archive file") \ 2425 \ 2426 product(uintx, SharedSymbolTableBucketSize, 4, \ 2427 "Average number of symbols per bucket in shared table") \ 2428 range(2, 246) \ 2429 \ 2430 diagnostic(bool, AllowArchivingWithJavaAgent, false, \ 2431 "Allow Java agent to be run with CDS dumping") \ 2432 \ 2433 diagnostic(bool, PrintMethodHandleStubs, false, \ 2434 "Print generated stub code for method handles") \ 2435 \ 2436 develop(bool, TraceMethodHandles, false, \ 2437 "trace internal method handle operations") \ 2438 \ 2439 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ 2440 "perform extra checks when constructing method handles") \ 2441 \ 2442 diagnostic(bool, ShowHiddenFrames, false, \ 2443 "show method handle implementation frames (usually hidden)") \ 2444 \ 2445 experimental(bool, TrustFinalNonStaticFields, false, \ 2446 "trust final non-static declarations for constant folding") \ 2447 \ 2448 diagnostic(bool, FoldStableValues, true, \ 2449 "Optimize loads from stable fields (marked w/ @Stable)") \ 2450 \ 2451 develop(bool, TraceInvokeDynamic, false, \ 2452 "trace internal invoke dynamic operations") \ 2453 \ 2454 diagnostic(int, UseBootstrapCallInfo, 1, \ 2455 "0: when resolving InDy or ConDy, force all BSM arguments to be " \ 2456 "resolved before the bootstrap method is called; 1: when a BSM " \ 2457 "that may accept a BootstrapCallInfo is detected, use that API " \ 2458 "to pass BSM arguments, which allows the BSM to delay their " \ 2459 "resolution; 2+: stress test the BCI API by calling more BSMs " \ 2460 "via that API, instead of with the eagerly-resolved array.") \ 2461 \ 2462 diagnostic(bool, PauseAtStartup, false, \ 2463 "Causes the VM to pause at startup time and wait for the pause " \ 2464 "file to be removed (default: ./vm.paused.<pid>)") \ 2465 \ 2466 diagnostic(ccstr, PauseAtStartupFile, NULL, \ 2467 "The file to create and for whose removal to await when pausing " \ 2468 "at startup. (default: ./vm.paused.<pid>)") \ 2469 \ 2470 diagnostic(bool, PauseAtExit, false, \ 2471 "Pause and wait for keypress on exit if a debugger is attached") \ 2472 \ 2473 product(bool, ExtendedDTraceProbes, false, \ 2474 "Enable performance-impacting dtrace probes") \ 2475 \ 2476 product(bool, DTraceMethodProbes, false, \ 2477 "Enable dtrace probes for method-entry and method-exit") \ 2478 \ 2479 product(bool, DTraceAllocProbes, false, \ 2480 "Enable dtrace probes for object allocation") \ 2481 \ 2482 product(bool, DTraceMonitorProbes, false, \ 2483 "Enable dtrace probes for monitor events") \ 2484 \ 2485 product(bool, RelaxAccessControlCheck, false, \ 2486 "Relax the access control checks in the verifier") \ 2487 \ 2488 product(uintx, StringTableSize, defaultStringTableSize, \ 2489 "Number of buckets in the interned String table " \ 2490 "(will be rounded to nearest higher power of 2)") \ 2491 range(minimumStringTableSize, 16777216ul) \ 2492 \ 2493 experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \ 2494 "Number of buckets in the JVM internal Symbol table") \ 2495 range(minimumSymbolTableSize, 111*defaultSymbolTableSize) \ 2496 \ 2497 product(bool, UseStringDeduplication, false, \ 2498 "Use string deduplication") \ 2499 \ 2500 product(uintx, StringDeduplicationAgeThreshold, 3, \ 2501 "A string must reach this age (or be promoted to an old region) " \ 2502 "to be considered for deduplication") \ 2503 range(1, markOopDesc::max_age) \ 2504 \ 2505 diagnostic(bool, StringDeduplicationResizeALot, false, \ 2506 "Force table resize every time the table is scanned") \ 2507 \ 2508 diagnostic(bool, StringDeduplicationRehashALot, false, \ 2509 "Force table rehash every time the table is scanned") \ 2510 \ 2511 diagnostic(bool, WhiteBoxAPI, false, \ 2512 "Enable internal testing APIs") \ 2513 \ 2514 experimental(intx, SurvivorAlignmentInBytes, 0, \ 2515 "Default survivor space alignment in bytes") \ 2516 constraint(SurvivorAlignmentInBytesConstraintFunc,AfterErgo) \ 2517 \ 2518 product(ccstr, DumpLoadedClassList, NULL, \ 2519 "Dump the names all loaded classes, that could be stored into " \ 2520 "the CDS archive, in the specified file") \ 2521 \ 2522 product(ccstr, SharedClassListFile, NULL, \ 2523 "Override the default CDS class list") \ 2524 \ 2525 product(ccstr, SharedArchiveFile, NULL, \ 2526 "Override the default location of the CDS archive file") \ 2527 \ 2528 product(ccstr, ExtraSharedClassListFile, NULL, \ 2529 "Extra classlist for building the CDS archive file") \ 2530 \ 2531 experimental(size_t, ArrayAllocatorMallocLimit, \ 2532 SOLARIS_ONLY(64*K) NOT_SOLARIS((size_t)-1), \ 2533 "Allocation less than this value will be allocated " \ 2534 "using malloc. Larger allocations will use mmap.") \ 2535 \ 2536 experimental(bool, AlwaysAtomicAccesses, false, \ 2537 "Accesses to all variables should always be atomic") \ 2538 \ 2539 diagnostic(bool, UseUnalignedAccesses, false, \ 2540 "Use unaligned memory accesses in Unsafe") \ 2541 \ 2542 product_pd(bool, PreserveFramePointer, \ 2543 "Use the FP register for holding the frame pointer " \ 2544 "and not as a general purpose register.") \ 2545 \ 2546 diagnostic(bool, CheckIntrinsics, true, \ 2547 "When a class C is loaded, check that " \ 2548 "(1) all intrinsics defined by the VM for class C are present "\ 2549 "in the loaded class file and are marked with the " \ 2550 "@HotSpotIntrinsicCandidate annotation, that " \ 2551 "(2) there is an intrinsic registered for all loaded methods " \ 2552 "that are annotated with the @HotSpotIntrinsicCandidate " \ 2553 "annotation, and that " \ 2554 "(3) no orphan methods exist for class C (i.e., methods for " \ 2555 "which the VM declares an intrinsic but that are not declared "\ 2556 "in the loaded class C. " \ 2557 "Check (3) is available only in debug builds.") \ 2558 \ 2559 diagnostic_pd(intx, InitArrayShortSize, \ 2560 "Threshold small size (in bytes) for clearing arrays. " \ 2561 "Anything this size or smaller may get converted to discrete " \ 2562 "scalar stores.") \ 2563 range(0, max_intx) \ 2564 constraint(InitArrayShortSizeConstraintFunc, AfterErgo) \ 2565 \ 2566 diagnostic(bool, CompilerDirectivesIgnoreCompileCommands, false, \ 2567 "Disable backwards compatibility for compile commands.") \ 2568 \ 2569 diagnostic(bool, CompilerDirectivesPrint, false, \ 2570 "Print compiler directives on installation.") \ 2571 diagnostic(int, CompilerDirectivesLimit, 50, \ 2572 "Limit on number of compiler directives.") \ 2573 \ 2574 product(ccstr, AllocateHeapAt, NULL, \ 2575 "Path to the directoy where a temporary file will be created " \ 2576 "to use as the backing store for Java Heap.") \ 2577 \ 2578 develop(bool, VerifyMetaspace, false, \ 2579 "Verify metaspace on chunk movements.") \ 2580 \ 2581 diagnostic(bool, ShowRegistersOnAssert, true, \ 2582 "On internal errors, include registers in error report.") \ 2583 \ 2584 experimental(bool, UseSwitchProfiling, true, \ 2585 "leverage profiling for table/lookup switch") \ 2586 \ 2587 JFR_ONLY(product(bool, FlightRecorder, false, \ 2588 "Enable Flight Recorder")) \ 2589 \ 2590 JFR_ONLY(product(ccstr, FlightRecorderOptions, NULL, \ 2591 "Flight Recorder options")) \ 2592 \ 2593 JFR_ONLY(product(ccstr, StartFlightRecording, NULL, \ 2594 "Start flight recording with options")) \ 2595 \ 2596 experimental(bool, UseFastUnorderedTimeStamps, false, \ 2597 "Use platform unstable time where supported for timestamps only") 2598 2599 #define VM_FLAGS(develop, \ 2600 develop_pd, \ 2601 product, \ 2602 product_pd, \ 2603 diagnostic, \ 2604 diagnostic_pd, \ 2605 experimental, \ 2606 notproduct, \ 2607 manageable, \ 2608 product_rw, \ 2609 lp64_product, \ 2610 range, \ 2611 constraint, \ 2612 writeable) \ 2613 \ 2614 RUNTIME_FLAGS( \ 2615 develop, \ 2616 develop_pd, \ 2617 product, \ 2618 product_pd, \ 2619 diagnostic, \ 2620 diagnostic_pd, \ 2621 experimental, \ 2622 notproduct, \ 2623 manageable, \ 2624 product_rw, \ 2625 lp64_product, \ 2626 range, \ 2627 constraint, \ 2628 writeable) \ 2629 \ 2630 GC_FLAGS( \ 2631 develop, \ 2632 develop_pd, \ 2633 product, \ 2634 product_pd, \ 2635 diagnostic, \ 2636 diagnostic_pd, \ 2637 experimental, \ 2638 notproduct, \ 2639 manageable, \ 2640 product_rw, \ 2641 lp64_product, \ 2642 range, \ 2643 constraint, \ 2644 writeable) \ 2645 2646 /* 2647 * Macros for factoring of globals 2648 */ 2649 2650 // Interface macros 2651 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 2652 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; 2653 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; 2654 #define DECLARE_PD_DIAGNOSTIC_FLAG(type, name, doc) extern "C" type name; 2655 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; 2656 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; 2657 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; 2658 #ifdef PRODUCT 2659 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; 2660 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; 2661 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) const type name = value; 2662 #else 2663 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; 2664 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; 2665 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; 2666 #endif // PRODUCT 2667 // Special LP64 flags, product only needed for now. 2668 #ifdef _LP64 2669 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; 2670 #else 2671 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; 2672 #endif // _LP64 2673 2674 // Implementation macros 2675 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; 2676 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; 2677 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; 2678 #define MATERIALIZE_PD_DIAGNOSTIC_FLAG(type, name, doc) type name = pd_##name; 2679 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; 2680 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; 2681 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; 2682 #ifdef PRODUCT 2683 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) 2684 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) 2685 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) 2686 #else 2687 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; 2688 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; 2689 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; 2690 #endif // PRODUCT 2691 #ifdef _LP64 2692 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; 2693 #else 2694 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ 2695 #endif // _LP64 2696 2697 // Only materialize src code for range checking when required, ignore otherwise 2698 #define IGNORE_RANGE(a, b) 2699 // Only materialize src code for contraint checking when required, ignore otherwise 2700 #define IGNORE_CONSTRAINT(func,type) 2701 2702 #define IGNORE_WRITEABLE(type) 2703 2704 VM_FLAGS(DECLARE_DEVELOPER_FLAG, \ 2705 DECLARE_PD_DEVELOPER_FLAG, \ 2706 DECLARE_PRODUCT_FLAG, \ 2707 DECLARE_PD_PRODUCT_FLAG, \ 2708 DECLARE_DIAGNOSTIC_FLAG, \ 2709 DECLARE_PD_DIAGNOSTIC_FLAG, \ 2710 DECLARE_EXPERIMENTAL_FLAG, \ 2711 DECLARE_NOTPRODUCT_FLAG, \ 2712 DECLARE_MANAGEABLE_FLAG, \ 2713 DECLARE_PRODUCT_RW_FLAG, \ 2714 DECLARE_LP64_PRODUCT_FLAG, \ 2715 IGNORE_RANGE, \ 2716 IGNORE_CONSTRAINT, \ 2717 IGNORE_WRITEABLE) 2718 2719 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, \ 2720 DECLARE_PD_DEVELOPER_FLAG, \ 2721 DECLARE_PRODUCT_FLAG, \ 2722 DECLARE_PD_PRODUCT_FLAG, \ 2723 DECLARE_DIAGNOSTIC_FLAG, \ 2724 DECLARE_PD_DIAGNOSTIC_FLAG, \ 2725 DECLARE_NOTPRODUCT_FLAG, \ 2726 IGNORE_RANGE, \ 2727 IGNORE_CONSTRAINT, \ 2728 IGNORE_WRITEABLE) 2729 2730 ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, \ 2731 DECLARE_PRODUCT_FLAG, \ 2732 DECLARE_DIAGNOSTIC_FLAG, \ 2733 DECLARE_EXPERIMENTAL_FLAG, \ 2734 DECLARE_NOTPRODUCT_FLAG, \ 2735 IGNORE_RANGE, \ 2736 IGNORE_CONSTRAINT, \ 2737 IGNORE_WRITEABLE) 2738 2739 // Extensions 2740 2741 #include "runtime/globals_ext.hpp" 2742 2743 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP