annotate src/share/vm/runtime/globals.hpp @ 1702:eeade8e89248

Merge
author ysr
date Sat, 11 Sep 2010 11:42:09 -0700
parents 179464550c7d 6ee479178066
children 18c378513575 894b1d7c7e01
rev   line source
duke@0 1 /*
trims@1472 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
duke@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@0 4 *
duke@0 5 * This code is free software; you can redistribute it and/or modify it
duke@0 6 * under the terms of the GNU General Public License version 2 only, as
duke@0 7 * published by the Free Software Foundation.
duke@0 8 *
duke@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@0 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@0 13 * accompanied this code).
duke@0 14 *
duke@0 15 * You should have received a copy of the GNU General Public License version
duke@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@0 18 *
trims@1472 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1472 20 * or visit www.oracle.com if you need additional information or have any
trims@1472 21 * questions.
duke@0 22 *
duke@0 23 */
duke@0 24
twisti@1616 25 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
duke@0 26 define_pd_global(bool, BackgroundCompilation, false);
duke@0 27 define_pd_global(bool, UseTLAB, false);
duke@0 28 define_pd_global(bool, CICompileOSR, false);
duke@0 29 define_pd_global(bool, UseTypeProfile, false);
duke@0 30 define_pd_global(bool, UseOnStackReplacement, false);
duke@0 31 define_pd_global(bool, InlineIntrinsics, false);
duke@0 32 define_pd_global(bool, PreferInterpreterNativeStubs, true);
duke@0 33 define_pd_global(bool, ProfileInterpreter, false);
duke@0 34 define_pd_global(bool, ProfileTraps, false);
duke@0 35 define_pd_global(bool, TieredCompilation, false);
duke@0 36
duke@0 37 define_pd_global(intx, CompileThreshold, 0);
duke@0 38 define_pd_global(intx, Tier2CompileThreshold, 0);
duke@0 39 define_pd_global(intx, Tier3CompileThreshold, 0);
duke@0 40 define_pd_global(intx, Tier4CompileThreshold, 0);
duke@0 41
duke@0 42 define_pd_global(intx, BackEdgeThreshold, 0);
duke@0 43 define_pd_global(intx, Tier2BackEdgeThreshold, 0);
duke@0 44 define_pd_global(intx, Tier3BackEdgeThreshold, 0);
duke@0 45 define_pd_global(intx, Tier4BackEdgeThreshold, 0);
duke@0 46
duke@0 47 define_pd_global(intx, OnStackReplacePercentage, 0);
duke@0 48 define_pd_global(bool, ResizeTLAB, false);
duke@0 49 define_pd_global(intx, FreqInlineSize, 0);
phh@1064 50 define_pd_global(intx, InlineSmallCode, 0);
duke@0 51 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
duke@0 52 define_pd_global(intx, InlineClassNatives, true);
duke@0 53 define_pd_global(intx, InlineUnsafeOps, true);
duke@0 54 define_pd_global(intx, InitialCodeCacheSize, 160*K);
duke@0 55 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
duke@0 56 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
duke@0 57 define_pd_global(intx, CodeCacheMinBlockLength, 1);
duke@0 58 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M));
duke@0 59 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M));
duke@0 60 define_pd_global(bool, NeverActAsServerClassMachine, true);
phh@1064 61 define_pd_global(uint64_t,MaxRAM, 1ULL*G);
duke@0 62 #define CI_COMPILER_COUNT 0
duke@0 63 #else
duke@0 64
duke@0 65 #ifdef COMPILER2
duke@0 66 #define CI_COMPILER_COUNT 2
duke@0 67 #else
duke@0 68 #define CI_COMPILER_COUNT 1
duke@0 69 #endif // COMPILER2
duke@0 70
duke@0 71 #endif // no compilers
duke@0 72
duke@0 73
duke@0 74 // string type aliases used only in this file
duke@0 75 typedef const char* ccstr;
duke@0 76 typedef const char* ccstrlist; // represents string arguments which accumulate
duke@0 77
duke@0 78 enum FlagValueOrigin {
duke@0 79 DEFAULT = 0,
duke@0 80 COMMAND_LINE = 1,
duke@0 81 ENVIRON_VAR = 2,
duke@0 82 CONFIG_FILE = 3,
duke@0 83 MANAGEMENT = 4,
duke@0 84 ERGONOMIC = 5,
duke@0 85 ATTACH_ON_DEMAND = 6,
duke@0 86 INTERNAL = 99
duke@0 87 };
duke@0 88
duke@0 89 struct Flag {
duke@0 90 const char *type;
duke@0 91 const char *name;
duke@0 92 void* addr;
ikrylov@1692 93
ikrylov@1692 94 NOT_PRODUCT(const char *doc;)
ikrylov@1692 95
duke@0 96 const char *kind;
duke@0 97 FlagValueOrigin origin;
duke@0 98
duke@0 99 // points to all Flags static array
duke@0 100 static Flag *flags;
duke@0 101
duke@0 102 // number of flags
duke@0 103 static size_t numFlags;
duke@0 104
duke@0 105 static Flag* find_flag(char* name, size_t length);
duke@0 106
duke@0 107 bool is_bool() const { return strcmp(type, "bool") == 0; }
duke@0 108 bool get_bool() const { return *((bool*) addr); }
duke@0 109 void set_bool(bool value) { *((bool*) addr) = value; }
duke@0 110
duke@0 111 bool is_intx() const { return strcmp(type, "intx") == 0; }
duke@0 112 intx get_intx() const { return *((intx*) addr); }
duke@0 113 void set_intx(intx value) { *((intx*) addr) = value; }
duke@0 114
duke@0 115 bool is_uintx() const { return strcmp(type, "uintx") == 0; }
duke@0 116 uintx get_uintx() const { return *((uintx*) addr); }
duke@0 117 void set_uintx(uintx value) { *((uintx*) addr) = value; }
duke@0 118
phh@1064 119 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; }
phh@1064 120 uint64_t get_uint64_t() const { return *((uint64_t*) addr); }
phh@1064 121 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; }
phh@1064 122
duke@0 123 bool is_double() const { return strcmp(type, "double") == 0; }
duke@0 124 double get_double() const { return *((double*) addr); }
duke@0 125 void set_double(double value) { *((double*) addr) = value; }
duke@0 126
duke@0 127 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; }
duke@0 128 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; }
duke@0 129 ccstr get_ccstr() const { return *((ccstr*) addr); }
duke@0 130 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; }
duke@0 131
duke@0 132 bool is_unlocker() const;
duke@0 133 bool is_unlocked() const;
duke@0 134 bool is_writeable() const;
duke@0 135 bool is_external() const;
duke@0 136
ikrylov@1692 137 void print_on(outputStream* st, bool withComments = false );
duke@0 138 void print_as_flag(outputStream* st);
duke@0 139 };
duke@0 140
duke@0 141 // debug flags control various aspects of the VM and are global accessible
duke@0 142
duke@0 143 // use FlagSetting to temporarily change some debug flag
duke@0 144 // e.g. FlagSetting fs(DebugThisAndThat, true);
duke@0 145 // restored to previous value upon leaving scope
duke@0 146 class FlagSetting {
duke@0 147 bool val;
duke@0 148 bool* flag;
duke@0 149 public:
duke@0 150 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; }
duke@0 151 ~FlagSetting() { *flag = val; }
duke@0 152 };
duke@0 153
duke@0 154
duke@0 155 class CounterSetting {
duke@0 156 intx* counter;
duke@0 157 public:
duke@0 158 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
duke@0 159 ~CounterSetting() { (*counter)--; }
duke@0 160 };
duke@0 161
duke@0 162
duke@0 163 class IntFlagSetting {
duke@0 164 intx val;
duke@0 165 intx* flag;
duke@0 166 public:
duke@0 167 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; }
duke@0 168 ~IntFlagSetting() { *flag = val; }
duke@0 169 };
duke@0 170
duke@0 171
duke@0 172 class DoubleFlagSetting {
duke@0 173 double val;
duke@0 174 double* flag;
duke@0 175 public:
duke@0 176 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; }
duke@0 177 ~DoubleFlagSetting() { *flag = val; }
duke@0 178 };
duke@0 179
duke@0 180
duke@0 181 class CommandLineFlags {
duke@0 182 public:
duke@0 183 static bool boolAt(char* name, size_t len, bool* value);
duke@0 184 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); }
duke@0 185 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin);
duke@0 186 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); }
duke@0 187
duke@0 188 static bool intxAt(char* name, size_t len, intx* value);
duke@0 189 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); }
duke@0 190 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin);
duke@0 191 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); }
duke@0 192
duke@0 193 static bool uintxAt(char* name, size_t len, uintx* value);
duke@0 194 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); }
duke@0 195 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin);
duke@0 196 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); }
duke@0 197
phh@1064 198 static bool uint64_tAt(char* name, size_t len, uint64_t* value);
phh@1064 199 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); }
phh@1064 200 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin);
phh@1064 201 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); }
phh@1064 202
duke@0 203 static bool doubleAt(char* name, size_t len, double* value);
duke@0 204 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); }
duke@0 205 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin);
duke@0 206 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); }
duke@0 207
duke@0 208 static bool ccstrAt(char* name, size_t len, ccstr* value);
duke@0 209 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); }
duke@0 210 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin);
duke@0 211 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); }
duke@0 212
duke@0 213 // Returns false if name is not a command line flag.
duke@0 214 static bool wasSetOnCmdline(const char* name, bool* value);
duke@0 215 static void printSetFlags();
duke@0 216
ikrylov@1692 217 static void printFlags(bool withComments = false );
duke@0 218
duke@0 219 static void verify() PRODUCT_RETURN;
duke@0 220 };
duke@0 221
duke@0 222 // use this for flags that are true by default in the debug version but
duke@0 223 // false in the optimized version, and vice versa
duke@0 224 #ifdef ASSERT
duke@0 225 #define trueInDebug true
duke@0 226 #define falseInDebug false
duke@0 227 #else
duke@0 228 #define trueInDebug false
duke@0 229 #define falseInDebug true
duke@0 230 #endif
duke@0 231
duke@0 232 // use this for flags that are true per default in the product build
duke@0 233 // but false in development builds, and vice versa
duke@0 234 #ifdef PRODUCT
duke@0 235 #define trueInProduct true
duke@0 236 #define falseInProduct false
duke@0 237 #else
duke@0 238 #define trueInProduct false
duke@0 239 #define falseInProduct true
duke@0 240 #endif
duke@0 241
duke@0 242 // use this for flags that are true per default in the tiered build
duke@0 243 // but false in non-tiered builds, and vice versa
duke@0 244 #ifdef TIERED
duke@0 245 #define trueInTiered true
duke@0 246 #define falseInTiered false
duke@0 247 #else
duke@0 248 #define trueInTiered false
duke@0 249 #define falseInTiered true
duke@0 250 #endif
duke@0 251
duke@0 252 // develop flags are settable / visible only during development and are constant in the PRODUCT version
duke@0 253 // product flags are always settable / visible
duke@0 254 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
duke@0 255
duke@0 256 // A flag must be declared with one of the following types:
duke@0 257 // bool, intx, uintx, ccstr.
duke@0 258 // The type "ccstr" is an alias for "const char*" and is used
duke@0 259 // only in this file, because the macrology requires single-token type names.
duke@0 260
duke@0 261 // Note: Diagnostic options not meant for VM tuning or for product modes.
duke@0 262 // They are to be used for VM quality assurance or field diagnosis
duke@0 263 // of VM bugs. They are hidden so that users will not be encouraged to
duke@0 264 // try them as if they were VM ordinary execution options. However, they
duke@0 265 // are available in the product version of the VM. Under instruction
duke@0 266 // from support engineers, VM customers can turn them on to collect
duke@0 267 // diagnostic information about VM problems. To use a VM diagnostic
duke@0 268 // option, you must first specify +UnlockDiagnosticVMOptions.
duke@0 269 // (This master switch also affects the behavior of -Xprintflags.)
ysr@350 270 //
ysr@350 271 // experimental flags are in support of features that are not
ysr@350 272 // part of the officially supported product, but are available
ysr@350 273 // for experimenting with. They could, for example, be performance
ysr@350 274 // features that may not have undergone full or rigorous QA, but which may
ysr@350 275 // help performance in some cases and released for experimentation
ysr@350 276 // by the community of users and developers. This flag also allows one to
ysr@350 277 // be able to build a fully supported product that nonetheless also
ysr@350 278 // ships with some unsupported, lightly tested, experimental features.
ysr@350 279 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding
ysr@350 280 // UnlockExperimentalVMOptions flag, which allows the control and
ysr@350 281 // modification of the experimental flags.
ysr@350 282 //
duke@0 283 // manageable flags are writeable external product flags.
duke@0 284 // They are dynamically writeable through the JDK management interface
duke@0 285 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
duke@0 286 // These flags are external exported interface (see CCC). The list of
duke@0 287 // manageable flags can be queried programmatically through the management
duke@0 288 // interface.
duke@0 289 //
duke@0 290 // A flag can be made as "manageable" only if
duke@0 291 // - the flag is defined in a CCC as an external exported interface.
duke@0 292 // - the VM implementation supports dynamic setting of the flag.
duke@0 293 // This implies that the VM must *always* query the flag variable
duke@0 294 // and not reuse state related to the flag state at any given time.
duke@0 295 // - you want the flag to be queried programmatically by the customers.
duke@0 296 //
duke@0 297 // product_rw flags are writeable internal product flags.
duke@0 298 // They are like "manageable" flags but for internal/private use.
duke@0 299 // The list of product_rw flags are internal/private flags which
duke@0 300 // may be changed/removed in a future release. It can be set
duke@0 301 // through the management interface to get/set value
duke@0 302 // when the name of flag is supplied.
duke@0 303 //
duke@0 304 // A flag can be made as "product_rw" only if
duke@0 305 // - the VM implementation supports dynamic setting of the flag.
duke@0 306 // This implies that the VM must *always* query the flag variable
duke@0 307 // and not reuse state related to the flag state at any given time.
duke@0 308 //
duke@0 309 // Note that when there is a need to support develop flags to be writeable,
duke@0 310 // it can be done in the same way as product_rw.
duke@0 311
ysr@350 312 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \
coleenp@113 313 \
coleenp@113 314 lp64_product(bool, UseCompressedOops, false, \
coleenp@113 315 "Use 32-bit object references in 64-bit VM. " \
coleenp@113 316 "lp64_product means flag is always constant in 32 bit VM") \
duke@0 317 \
kvn@642 318 notproduct(bool, CheckCompressedOops, true, \
kvn@642 319 "generate checks in encoding/decoding code in debug VM") \
kvn@642 320 \
kvn@642 321 product_pd(uintx, HeapBaseMinAddress, \
kvn@642 322 "OS specific low limit for heap base address") \
kvn@642 323 \
kvn@642 324 diagnostic(bool, PrintCompressedOopsMode, false, \
kvn@642 325 "Print compressed oops base address and encoding mode") \
coleenp@325 326 \
kvn@1492 327 lp64_product(intx, ObjectAlignmentInBytes, 8, \
kvn@1492 328 "Default object alignment in bytes, 8 is minimum") \
kvn@1492 329 \
duke@0 330 /* UseMembar is theoretically a temp flag used for memory barrier \
duke@0 331 * removal testing. It was supposed to be removed before FCS but has \
duke@0 332 * been re-added (see 6401008) */ \
duke@0 333 product(bool, UseMembar, false, \
duke@0 334 "(Unstable) Issues membars on thread state transitions") \
duke@0 335 \
ysr@1438 336 /* Temporary: See 6948537 */ \
ysr@1438 337 experimental(bool, UseMemSetInBOT, true, \
ysr@1438 338 "(Unstable) uses memset in BOT updates in GC code") \
ysr@1438 339 \
duke@0 340 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
ysr@350 341 "Enable normal processing of flags relating to field diagnostics")\
ysr@350 342 \
ysr@350 343 experimental(bool, UnlockExperimentalVMOptions, false, \
ysr@350 344 "Enable normal processing of flags relating to experimental features")\
duke@0 345 \
duke@0 346 product(bool, JavaMonitorsInStackTrace, true, \
duke@0 347 "Print info. about Java monitor locks when the stacks are dumped")\
duke@0 348 \
duke@0 349 product_pd(bool, UseLargePages, \
duke@0 350 "Use large page memory") \
duke@0 351 \
jmasa@389 352 product_pd(bool, UseLargePagesIndividualAllocation, \
jmasa@389 353 "Allocate large pages individually for better affinity") \
jmasa@389 354 \
jmasa@389 355 develop(bool, LargePagesIndividualAllocationInjectError, false, \
jmasa@389 356 "Fail large pages individual allocation") \
jmasa@389 357 \
duke@0 358 develop(bool, TracePageSizes, false, \
duke@0 359 "Trace page size selection and usage.") \
duke@0 360 \
duke@0 361 product(bool, UseNUMA, false, \
duke@0 362 "Use NUMA if available") \
duke@0 363 \
iveresov@462 364 product(bool, ForceNUMA, false, \
iveresov@462 365 "Force NUMA optimizations on single-node/UMA systems") \
iveresov@462 366 \
duke@0 367 product(intx, NUMAChunkResizeWeight, 20, \
duke@0 368 "Percentage (0-100) used to weight the current sample when " \
duke@0 369 "computing exponentially decaying average for " \
duke@0 370 "AdaptiveNUMAChunkSizing") \
duke@0 371 \
duke@0 372 product(intx, NUMASpaceResizeRate, 1*G, \
duke@0 373 "Do not reallocate more that this amount per collection") \
duke@0 374 \
duke@0 375 product(bool, UseAdaptiveNUMAChunkSizing, true, \
duke@0 376 "Enable adaptive chunk sizing for NUMA") \
duke@0 377 \
duke@0 378 product(bool, NUMAStats, false, \
duke@0 379 "Print NUMA stats in detailed heap information") \
duke@0 380 \
duke@0 381 product(intx, NUMAPageScanRate, 256, \
duke@0 382 "Maximum number of pages to include in the page scan procedure") \
duke@0 383 \
duke@0 384 product_pd(bool, NeedsDeoptSuspend, \
duke@0 385 "True for register window machines (sparc/ia64)") \
duke@0 386 \
duke@0 387 product(intx, UseSSE, 99, \
duke@0 388 "Highest supported SSE instructions set on x86/x64") \
duke@0 389 \
duke@0 390 product(uintx, LargePageSizeInBytes, 0, \
duke@0 391 "Large page size (0 to let VM choose the page size") \
duke@0 392 \
duke@0 393 product(uintx, LargePageHeapSizeThreshold, 128*M, \
duke@0 394 "Use large pages if max heap is at least this big") \
duke@0 395 \
duke@0 396 product(bool, ForceTimeHighResolution, false, \
duke@0 397 "Using high time resolution(For Win32 only)") \
duke@0 398 \
duke@0 399 develop(bool, TraceItables, false, \
duke@0 400 "Trace initialization and use of itables") \
duke@0 401 \
duke@0 402 develop(bool, TracePcPatching, false, \
duke@0 403 "Trace usage of frame::patch_pc") \
duke@0 404 \
duke@0 405 develop(bool, TraceJumps, false, \
duke@0 406 "Trace assembly jumps in thread ring buffer") \
duke@0 407 \
duke@0 408 develop(bool, TraceRelocator, false, \
duke@0 409 "Trace the bytecode relocator") \
duke@0 410 \
duke@0 411 develop(bool, TraceLongCompiles, false, \
duke@0 412 "Print out every time compilation is longer than " \
duke@0 413 "a given threashold") \
duke@0 414 \
duke@0 415 develop(bool, SafepointALot, false, \
duke@0 416 "Generates a lot of safepoints. Works with " \
duke@0 417 "GuaranteedSafepointInterval") \
duke@0 418 \
duke@0 419 product_pd(bool, BackgroundCompilation, \
duke@0 420 "A thread requesting compilation is not blocked during " \
duke@0 421 "compilation") \
duke@0 422 \
duke@0 423 product(bool, PrintVMQWaitTime, false, \
duke@0 424 "Prints out the waiting time in VM operation queue") \
duke@0 425 \
duke@0 426 develop(bool, BailoutToInterpreterForThrows, false, \
duke@0 427 "Compiled methods which throws/catches exceptions will be " \
duke@0 428 "deopt and intp.") \
duke@0 429 \
duke@0 430 develop(bool, NoYieldsInMicrolock, false, \
duke@0 431 "Disable yields in microlock") \
duke@0 432 \
duke@0 433 develop(bool, TraceOopMapGeneration, false, \
duke@0 434 "Shows oopmap generation") \
duke@0 435 \
duke@0 436 product(bool, MethodFlushing, true, \
duke@0 437 "Reclamation of zombie and not-entrant methods") \
duke@0 438 \
duke@0 439 develop(bool, VerifyStack, false, \
duke@0 440 "Verify stack of each thread when it is entering a runtime call") \
duke@0 441 \
duke@0 442 develop(bool, ForceUnreachable, false, \
duke@0 443 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \
duke@0 444 \
duke@0 445 notproduct(bool, StressDerivedPointers, false, \
duke@0 446 "Force scavenge when a derived pointers is detected on stack " \
duke@0 447 "after rtm call") \
duke@0 448 \
duke@0 449 develop(bool, TraceDerivedPointers, false, \
duke@0 450 "Trace traversal of derived pointers on stack") \
duke@0 451 \
duke@0 452 notproduct(bool, TraceCodeBlobStacks, false, \
duke@0 453 "Trace stack-walk of codeblobs") \
duke@0 454 \
duke@0 455 product(bool, PrintJNIResolving, false, \
duke@0 456 "Used to implement -v:jni") \
duke@0 457 \
duke@0 458 notproduct(bool, PrintRewrites, false, \
duke@0 459 "Print methods that are being rewritten") \
duke@0 460 \
duke@0 461 product(bool, UseInlineCaches, true, \
duke@0 462 "Use Inline Caches for virtual calls ") \
duke@0 463 \
duke@0 464 develop(bool, InlineArrayCopy, true, \
duke@0 465 "inline arraycopy native that is known to be part of " \
duke@0 466 "base library DLL") \
duke@0 467 \
duke@0 468 develop(bool, InlineObjectHash, true, \
duke@0 469 "inline Object::hashCode() native that is known to be part " \
duke@0 470 "of base library DLL") \
duke@0 471 \
duke@0 472 develop(bool, InlineObjectCopy, true, \
duke@0 473 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \
duke@0 474 \
duke@0 475 develop(bool, InlineNatives, true, \
duke@0 476 "inline natives that are known to be part of base library DLL") \
duke@0 477 \
duke@0 478 develop(bool, InlineMathNatives, true, \
duke@0 479 "inline SinD, CosD, etc.") \
duke@0 480 \
duke@0 481 develop(bool, InlineClassNatives, true, \
duke@0 482 "inline Class.isInstance, etc") \
duke@0 483 \
duke@0 484 develop(bool, InlineAtomicLong, true, \
duke@0 485 "inline sun.misc.AtomicLong") \
duke@0 486 \
duke@0 487 develop(bool, InlineThreadNatives, true, \
duke@0 488 "inline Thread.currentThread, etc") \
duke@0 489 \
duke@0 490 develop(bool, InlineReflectionGetCallerClass, true, \
duke@0 491 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\
duke@0 492 "of base library DLL") \
duke@0 493 \
duke@0 494 develop(bool, InlineUnsafeOps, true, \
duke@0 495 "inline memory ops (native methods) from sun.misc.Unsafe") \
duke@0 496 \
duke@0 497 develop(bool, ConvertCmpD2CmpF, true, \
duke@0 498 "Convert cmpD to cmpF when one input is constant in float range") \
duke@0 499 \
duke@0 500 develop(bool, ConvertFloat2IntClipping, true, \
duke@0 501 "Convert float2int clipping idiom to integer clipping") \
duke@0 502 \
duke@0 503 develop(bool, SpecialStringCompareTo, true, \
duke@0 504 "special version of string compareTo") \
duke@0 505 \
duke@0 506 develop(bool, SpecialStringIndexOf, true, \
duke@0 507 "special version of string indexOf") \
duke@0 508 \
cfang@681 509 develop(bool, SpecialStringEquals, true, \
cfang@681 510 "special version of string equals") \
cfang@681 511 \
cfang@681 512 develop(bool, SpecialArraysEquals, true, \
rasbold@169 513 "special version of Arrays.equals(char[],char[])") \
rasbold@169 514 \
cfang@681 515 product(bool, UseSSE42Intrinsics, false, \
cfang@681 516 "SSE4.2 versions of intrinsics") \
cfang@681 517 \
duke@0 518 develop(bool, TraceCallFixup, false, \
duke@0 519 "traces all call fixups") \
duke@0 520 \
duke@0 521 develop(bool, DeoptimizeALot, false, \
duke@0 522 "deoptimize at every exit from the runtime system") \
duke@0 523 \
kvn@434 524 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
duke@0 525 "a comma separated list of bcis to deoptimize at") \
duke@0 526 \
duke@0 527 product(bool, DeoptimizeRandom, false, \
duke@0 528 "deoptimize random frames on random exit from the runtime system")\
duke@0 529 \
duke@0 530 notproduct(bool, ZombieALot, false, \
duke@0 531 "creates zombies (non-entrant) at exit from the runt. system") \
duke@0 532 \
duke@0 533 notproduct(bool, WalkStackALot, false, \
duke@0 534 "trace stack (no print) at every exit from the runtime system") \
duke@0 535 \
duke@0 536 develop(bool, Debugging, false, \
duke@0 537 "set when executing debug methods in debug.ccp " \
duke@0 538 "(to prevent triggering assertions)") \
duke@0 539 \
duke@0 540 notproduct(bool, StrictSafepointChecks, trueInDebug, \
duke@0 541 "Enable strict checks that safepoints cannot happen for threads " \
duke@0 542 "that used No_Safepoint_Verifier") \
duke@0 543 \
duke@0 544 notproduct(bool, VerifyLastFrame, false, \
duke@0 545 "Verify oops on last frame on entry to VM") \
duke@0 546 \
duke@0 547 develop(bool, TraceHandleAllocation, false, \
duke@0 548 "Prints out warnings when suspicious many handles are allocated") \
duke@0 549 \
duke@0 550 product(bool, UseCompilerSafepoints, true, \
duke@0 551 "Stop at safepoints in compiled code") \
duke@0 552 \
duke@0 553 product(bool, UseSplitVerifier, true, \
duke@0 554 "use split verifier with StackMapTable attributes") \
duke@0 555 \
duke@0 556 product(bool, FailOverToOldVerifier, true, \
duke@0 557 "fail over to old verifier when split verifier fails") \
duke@0 558 \
duke@0 559 develop(bool, ShowSafepointMsgs, false, \
duke@0 560 "Show msg. about safepoint synch.") \
duke@0 561 \
duke@0 562 product(bool, SafepointTimeout, false, \
duke@0 563 "Time out and warn or fail after SafepointTimeoutDelay " \
duke@0 564 "milliseconds if failed to reach safepoint") \
duke@0 565 \
duke@0 566 develop(bool, DieOnSafepointTimeout, false, \
duke@0 567 "Die upon failure to reach safepoint (see SafepointTimeout)") \
duke@0 568 \
duke@0 569 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
duke@0 570 /* typically, at most a few retries are needed */ \
duke@0 571 product(intx, SuspendRetryCount, 50, \
duke@0 572 "Maximum retry count for an external suspend request") \
duke@0 573 \
duke@0 574 product(intx, SuspendRetryDelay, 5, \
duke@0 575 "Milliseconds to delay per retry (* current_retry_count)") \
duke@0 576 \
duke@0 577 product(bool, AssertOnSuspendWaitFailure, false, \
duke@0 578 "Assert/Guarantee on external suspend wait failure") \
duke@0 579 \
duke@0 580 product(bool, TraceSuspendWaitFailures, false, \
duke@0 581 "Trace external suspend wait failures") \
duke@0 582 \
duke@0 583 product(bool, MaxFDLimit, true, \
duke@0 584 "Bump the number of file descriptors to max in solaris.") \
duke@0 585 \
duke@0 586 notproduct(bool, LogEvents, trueInDebug, \
duke@0 587 "Enable Event log") \
duke@0 588 \
duke@0 589 product(bool, BytecodeVerificationRemote, true, \
duke@0 590 "Enables the Java bytecode verifier for remote classes") \
duke@0 591 \
duke@0 592 product(bool, BytecodeVerificationLocal, false, \
duke@0 593 "Enables the Java bytecode verifier for local classes") \
duke@0 594 \
duke@0 595 develop(bool, ForceFloatExceptions, trueInDebug, \
duke@0 596 "Force exceptions on FP stack under/overflow") \
duke@0 597 \
duke@0 598 develop(bool, SoftMatchFailure, trueInProduct, \
duke@0 599 "If the DFA fails to match a node, print a message and bail out") \
duke@0 600 \
duke@0 601 develop(bool, VerifyStackAtCalls, false, \
duke@0 602 "Verify that the stack pointer is unchanged after calls") \
duke@0 603 \
duke@0 604 develop(bool, TraceJavaAssertions, false, \
duke@0 605 "Trace java language assertions") \
duke@0 606 \
duke@0 607 notproduct(bool, CheckAssertionStatusDirectives, false, \
duke@0 608 "temporary - see javaClasses.cpp") \
duke@0 609 \
duke@0 610 notproduct(bool, PrintMallocFree, false, \
duke@0 611 "Trace calls to C heap malloc/free allocation") \
duke@0 612 \
bobv@1605 613 product(bool, PrintOopAddress, false, \
duke@0 614 "Always print the location of the oop") \
duke@0 615 \
duke@0 616 notproduct(bool, VerifyCodeCacheOften, false, \
duke@0 617 "Verify compiled-code cache often") \
duke@0 618 \
duke@0 619 develop(bool, ZapDeadCompiledLocals, false, \
duke@0 620 "Zap dead locals in compiler frames") \
duke@0 621 \
duke@0 622 notproduct(bool, ZapDeadLocalsOld, false, \
duke@0 623 "Zap dead locals (old version, zaps all frames when " \
duke@0 624 "entering the VM") \
duke@0 625 \
duke@0 626 notproduct(bool, CheckOopishValues, false, \
duke@0 627 "Warn if value contains oop ( requires ZapDeadLocals)") \
duke@0 628 \
duke@0 629 develop(bool, UseMallocOnly, false, \
duke@0 630 "use only malloc/free for allocation (no resource area/arena)") \
duke@0 631 \
duke@0 632 develop(bool, PrintMalloc, false, \
duke@0 633 "print all malloc/free calls") \
duke@0 634 \
duke@0 635 develop(bool, ZapResourceArea, trueInDebug, \
duke@0 636 "Zap freed resource/arena space with 0xABABABAB") \
duke@0 637 \
duke@0 638 notproduct(bool, ZapVMHandleArea, trueInDebug, \
duke@0 639 "Zap freed VM handle space with 0xBCBCBCBC") \
duke@0 640 \
duke@0 641 develop(bool, ZapJNIHandleArea, trueInDebug, \
duke@0 642 "Zap freed JNI handle space with 0xFEFEFEFE") \
duke@0 643 \
jmasa@263 644 develop(bool, ZapUnusedHeapArea, trueInDebug, \
duke@0 645 "Zap unused heap space with 0xBAADBABE") \
duke@0 646 \
jmasa@263 647 develop(bool, TraceZapUnusedHeapArea, false, \
jmasa@263 648 "Trace zapping of unused heap space") \
jmasa@263 649 \
jmasa@263 650 develop(bool, CheckZapUnusedHeapArea, false, \
jmasa@263 651 "Check zapping of unused heap space") \
jmasa@263 652 \
jcoomes@481 653 develop(bool, ZapFillerObjects, trueInDebug, \
jcoomes@481 654 "Zap filler objects with 0xDEAFBABE") \
jcoomes@481 655 \
duke@0 656 develop(bool, PrintVMMessages, true, \
duke@0 657 "Print vm messages on console") \
duke@0 658 \
duke@0 659 product(bool, PrintGCApplicationConcurrentTime, false, \
duke@0 660 "Print the time the application has been running") \
duke@0 661 \
duke@0 662 product(bool, PrintGCApplicationStoppedTime, false, \
duke@0 663 "Print the time the application has been stopped") \
duke@0 664 \
jcoomes@1410 665 notproduct(uintx, ErrorHandlerTest, 0, \
jcoomes@1410 666 "If > 0, provokes an error after VM initialization; the value" \
jcoomes@1410 667 "determines which error to provoke. See test_error_handler()" \
jcoomes@1410 668 "in debug.cpp.") \
jcoomes@1410 669 \
duke@0 670 develop(bool, Verbose, false, \
duke@0 671 "Prints additional debugging information from other modes") \
duke@0 672 \
duke@0 673 develop(bool, PrintMiscellaneous, false, \
duke@0 674 "Prints uncategorized debugging information (requires +Verbose)") \
duke@0 675 \
duke@0 676 develop(bool, WizardMode, false, \
duke@0 677 "Prints much more debugging information") \
duke@0 678 \
duke@0 679 product(bool, ShowMessageBoxOnError, false, \
duke@0 680 "Keep process alive on VM fatal error") \
duke@0 681 \
duke@0 682 product_pd(bool, UseOSErrorReporting, \
duke@0 683 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
duke@0 684 \
duke@0 685 product(bool, SuppressFatalErrorMessage, false, \
duke@0 686 "Do NO Fatal Error report [Avoid deadlock]") \
duke@0 687 \
duke@0 688 product(ccstrlist, OnError, "", \
duke@0 689 "Run user-defined commands on fatal error; see VMError.cpp " \
duke@0 690 "for examples") \
duke@0 691 \
duke@0 692 product(ccstrlist, OnOutOfMemoryError, "", \
duke@0 693 "Run user-defined commands on first java.lang.OutOfMemoryError") \
duke@0 694 \
ysr@615 695 manageable(bool, HeapDumpBeforeFullGC, false, \
ysr@615 696 "Dump heap to file before any major stop-world GC") \
ysr@615 697 \
ysr@615 698 manageable(bool, HeapDumpAfterFullGC, false, \
ysr@615 699 "Dump heap to file after any major stop-world GC") \
ysr@615 700 \
duke@0 701 manageable(bool, HeapDumpOnOutOfMemoryError, false, \
duke@0 702 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
duke@0 703 \
duke@0 704 manageable(ccstr, HeapDumpPath, NULL, \
duke@0 705 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \
duke@0 706 "directory) of the dump file (defaults to java_pid<pid>.hprof" \
duke@0 707 "in the working directory)") \
duke@0 708 \
duke@0 709 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \
duke@0 710 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \
duke@0 711 "when the heap usage is larger than this") \
duke@0 712 \
duke@0 713 develop(uintx, HeapDumpSegmentSize, 1*G, \
duke@0 714 "Approximate segment size when generating a segmented heap dump") \
duke@0 715 \
duke@0 716 develop(bool, BreakAtWarning, false, \
duke@0 717 "Execute breakpoint upon encountering VM warning") \
duke@0 718 \
duke@0 719 product_pd(bool, UseVectoredExceptions, \
duke@0 720 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \
duke@0 721 \
duke@0 722 develop(bool, TraceVMOperation, false, \
duke@0 723 "Trace vm operations") \
duke@0 724 \
duke@0 725 develop(bool, UseFakeTimers, false, \
duke@0 726 "Tells whether the VM should use system time or a fake timer") \
duke@0 727 \
duke@0 728 diagnostic(bool, LogCompilation, false, \
duke@0 729 "Log compilation activity in detail to hotspot.log or LogFile") \
duke@0 730 \
duke@0 731 product(bool, PrintCompilation, false, \
duke@0 732 "Print compilations") \
duke@0 733 \
duke@0 734 diagnostic(bool, TraceNMethodInstalls, false, \
duke@0 735 "Trace nmethod intallation") \
duke@0 736 \
jrose@989 737 diagnostic(intx, ScavengeRootsInCode, 0, \
jrose@989 738 "0: do not allow scavengable oops in the code cache; " \
jrose@989 739 "1: allow scavenging from the code cache; " \
jrose@989 740 "2: emit as many constants as the compiler can see") \
jrose@989 741 \
duke@0 742 diagnostic(bool, TraceOSRBreakpoint, false, \
duke@0 743 "Trace OSR Breakpoint ") \
duke@0 744 \
duke@0 745 diagnostic(bool, TraceCompileTriggered, false, \
duke@0 746 "Trace compile triggered") \
duke@0 747 \
duke@0 748 diagnostic(bool, TraceTriggers, false, \
duke@0 749 "Trace triggers") \
duke@0 750 \
duke@0 751 product(bool, AlwaysRestoreFPU, false, \
duke@0 752 "Restore the FPU control word after every JNI call (expensive)") \
duke@0 753 \
duke@0 754 notproduct(bool, PrintCompilation2, false, \
duke@0 755 "Print additional statistics per compilation") \
duke@0 756 \
jrose@100 757 diagnostic(bool, PrintAdapterHandlers, false, \
duke@0 758 "Print code generated for i2c/c2i adapters") \
duke@0 759 \
never@1207 760 develop(bool, VerifyAdapterSharing, false, \
never@1207 761 "Verify that the code for shared adapters is the equivalent") \
never@1207 762 \
jrose@100 763 diagnostic(bool, PrintAssembly, false, \
jrose@100 764 "Print assembly code (using external disassembler.so)") \
jrose@100 765 \
never@370 766 diagnostic(ccstr, PrintAssemblyOptions, NULL, \
jrose@100 767 "Options string passed to disassembler.so") \
jrose@100 768 \
jrose@100 769 diagnostic(bool, PrintNMethods, false, \
duke@0 770 "Print assembly code for nmethods when generated") \
duke@0 771 \
jrose@100 772 diagnostic(bool, PrintNativeNMethods, false, \
duke@0 773 "Print assembly code for native nmethods when generated") \
duke@0 774 \
duke@0 775 develop(bool, PrintDebugInfo, false, \
duke@0 776 "Print debug information for all nmethods when generated") \
duke@0 777 \
duke@0 778 develop(bool, PrintRelocations, false, \
duke@0 779 "Print relocation information for all nmethods when generated") \
duke@0 780 \
duke@0 781 develop(bool, PrintDependencies, false, \
duke@0 782 "Print dependency information for all nmethods when generated") \
duke@0 783 \
duke@0 784 develop(bool, PrintExceptionHandlers, false, \
duke@0 785 "Print exception handler tables for all nmethods when generated") \
duke@0 786 \
duke@0 787 develop(bool, InterceptOSException, false, \
duke@0 788 "Starts debugger when an implicit OS (e.g., NULL) " \
duke@0 789 "exception happens") \
duke@0 790 \
duke@0 791 notproduct(bool, PrintCodeCache, false, \
duke@0 792 "Print the compiled_code cache when exiting") \
duke@0 793 \
duke@0 794 develop(bool, PrintCodeCache2, false, \
duke@0 795 "Print detailed info on the compiled_code cache when exiting") \
duke@0 796 \
jrose@100 797 diagnostic(bool, PrintStubCode, false, \
duke@0 798 "Print generated stub code") \
duke@0 799 \
duke@0 800 product(bool, StackTraceInThrowable, true, \
duke@0 801 "Collect backtrace in throwable when exception happens") \
duke@0 802 \
duke@0 803 product(bool, OmitStackTraceInFastThrow, true, \
duke@0 804 "Omit backtraces for some 'hot' exceptions in optimized code") \
duke@0 805 \
duke@0 806 product(bool, ProfilerPrintByteCodeStatistics, false, \
duke@0 807 "Prints byte code statictics when dumping profiler output") \
duke@0 808 \
duke@0 809 product(bool, ProfilerRecordPC, false, \
duke@0 810 "Collects tick for each 16 byte interval of compiled code") \
duke@0 811 \
phh@1064 812 product(bool, ProfileVM, false, \
duke@0 813 "Profiles ticks that fall within VM (either in the VM Thread " \
duke@0 814 "or VM code called through stubs)") \
duke@0 815 \
duke@0 816 product(bool, ProfileIntervals, false, \
duke@0 817 "Prints profiles for each interval (see ProfileIntervalsTicks)") \
duke@0 818 \
duke@0 819 notproduct(bool, ProfilerCheckIntervals, false, \
duke@0 820 "Collect and print info on spacing of profiler ticks") \
duke@0 821 \
duke@0 822 develop(bool, PrintJVMWarnings, false, \
duke@0 823 "Prints warnings for unimplemented JVM functions") \
duke@0 824 \
duke@0 825 notproduct(uintx, WarnOnStalledSpinLock, 0, \
duke@0 826 "Prints warnings for stalled SpinLocks") \
duke@0 827 \
duke@0 828 develop(bool, InitializeJavaLangSystem, true, \
duke@0 829 "Initialize java.lang.System - turn off for individual " \
duke@0 830 "method debugging") \
duke@0 831 \
duke@0 832 develop(bool, InitializeJavaLangString, true, \
duke@0 833 "Initialize java.lang.String - turn off for individual " \
duke@0 834 "method debugging") \
duke@0 835 \
duke@0 836 develop(bool, InitializeJavaLangExceptionsErrors, true, \
duke@0 837 "Initialize various error and exception classes - turn off for " \
duke@0 838 "individual method debugging") \
duke@0 839 \
duke@0 840 product(bool, RegisterFinalizersAtInit, true, \
duke@0 841 "Register finalizable objects at end of Object.<init> or " \
phh@1064 842 "after allocation") \
duke@0 843 \
duke@0 844 develop(bool, RegisterReferences, true, \
duke@0 845 "Tells whether the VM should register soft/weak/final/phantom " \
duke@0 846 "references") \
duke@0 847 \
duke@0 848 develop(bool, IgnoreRewrites, false, \
duke@0 849 "Supress rewrites of bytecodes in the oopmap generator. " \
duke@0 850 "This is unsafe!") \
duke@0 851 \
duke@0 852 develop(bool, PrintCodeCacheExtension, false, \
duke@0 853 "Print extension of code cache") \
duke@0 854 \
duke@0 855 develop(bool, UsePrivilegedStack, true, \
duke@0 856 "Enable the security JVM functions") \
duke@0 857 \
duke@0 858 develop(bool, IEEEPrecision, true, \
duke@0 859 "Enables IEEE precision (for INTEL only)") \
duke@0 860 \
duke@0 861 develop(bool, ProtectionDomainVerification, true, \
duke@0 862 "Verifies protection domain before resolution in system " \
duke@0 863 "dictionary") \
duke@0 864 \
duke@0 865 product(bool, ClassUnloading, true, \
duke@0 866 "Do unloading of classes") \
duke@0 867 \
jrose@474 868 diagnostic(bool, LinkWellKnownClasses, false, \
jrose@132 869 "Resolve a well known class as soon as its name is seen") \
jrose@132 870 \
duke@0 871 develop(bool, DisableStartThread, false, \
duke@0 872 "Disable starting of additional Java threads " \
duke@0 873 "(for debugging only)") \
duke@0 874 \
duke@0 875 develop(bool, MemProfiling, false, \
duke@0 876 "Write memory usage profiling to log file") \
duke@0 877 \
duke@0 878 notproduct(bool, PrintSystemDictionaryAtExit, false, \
duke@0 879 "Prints the system dictionary at exit") \
duke@0 880 \
duke@0 881 diagnostic(bool, UnsyncloadClass, false, \
acorn@514 882 "Unstable: VM calls loadClass unsynchronized. Custom " \
acorn@514 883 "class loader must call VM synchronized for findClass " \
acorn@514 884 "and defineClass.") \
acorn@514 885 \
acorn@514 886 product(bool, AlwaysLockClassLoader, false, \
acorn@514 887 "Require the VM to acquire the class loader lock before calling " \
acorn@514 888 "loadClass() even for class loaders registering " \
phh@1064 889 "as parallel capable") \
acorn@514 890 \
acorn@514 891 product(bool, AllowParallelDefineClass, false, \
acorn@514 892 "Allow parallel defineClass requests for class loaders " \
phh@1064 893 "registering as parallel capable") \
acorn@514 894 \
acorn@514 895 product(bool, MustCallLoadClassInternal, false, \
phh@1064 896 "Call loadClassInternal() rather than loadClass()") \
duke@0 897 \
duke@0 898 product_pd(bool, DontYieldALot, \
duke@0 899 "Throw away obvious excess yield calls (for SOLARIS only)") \
duke@0 900 \
duke@0 901 product_pd(bool, ConvertSleepToYield, \
duke@0 902 "Converts sleep(0) to thread yield " \
duke@0 903 "(may be off for SOLARIS to improve GUI)") \
duke@0 904 \
duke@0 905 product(bool, ConvertYieldToSleep, false, \
duke@0 906 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\
duke@0 907 "behavior (SOLARIS only)") \
duke@0 908 \
duke@0 909 product(bool, UseBoundThreads, true, \
duke@0 910 "Bind user level threads to kernel threads (for SOLARIS only)") \
duke@0 911 \
duke@0 912 develop(bool, UseDetachedThreads, true, \
duke@0 913 "Use detached threads that are recycled upon termination " \
duke@0 914 "(for SOLARIS only)") \
duke@0 915 \
duke@0 916 product(bool, UseLWPSynchronization, true, \
duke@0 917 "Use LWP-based instead of libthread-based synchronization " \
duke@0 918 "(SPARC only)") \
duke@0 919 \
never@370 920 product(ccstr, SyncKnobs, NULL, \
duke@0 921 "(Unstable) Various monitor synchronization tunables") \
duke@0 922 \
duke@0 923 product(intx, EmitSync, 0, \
duke@0 924 "(Unsafe,Unstable) " \
duke@0 925 " Controls emission of inline sync fast-path code") \
duke@0 926 \
duke@0 927 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \
duke@0 928 \
acorn@1508 929 product(intx, MonitorBound, 0, "Bound Monitor population") \
acorn@1508 930 \
acorn@1508 931 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \
acorn@1508 932 \
duke@0 933 product(intx, Atomics, 0, \
duke@0 934 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \
duke@0 935 \
duke@0 936 product(intx, FenceInstruction, 0, \
duke@0 937 "(Unsafe,Unstable) Experimental") \
duke@0 938 \
duke@0 939 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \
duke@0 940 \
duke@0 941 product(intx, SyncVerbose, 0, "(Unstable)" ) \
duke@0 942 \
duke@0 943 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \
duke@0 944 \
duke@0 945 product(intx, hashCode, 0, \
duke@0 946 "(Unstable) select hashCode generation algorithm" ) \
duke@0 947 \
duke@0 948 product(intx, WorkAroundNPTLTimedWaitHang, 1, \
duke@0 949 "(Unstable, Linux-specific)" \
duke@0 950 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \
duke@0 951 \
phh@1064 952 product(bool, FilterSpuriousWakeups, true, \
phh@1064 953 "Prevent spurious or premature wakeups from object.wait " \
phh@1064 954 "(Solaris only)") \
duke@0 955 \
duke@0 956 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \
duke@0 957 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \
duke@0 958 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \
duke@0 959 \
duke@0 960 develop(bool, UsePthreads, false, \
duke@0 961 "Use pthread-based instead of libthread-based synchronization " \
duke@0 962 "(SPARC only)") \
duke@0 963 \
duke@0 964 product(bool, AdjustConcurrency, false, \
duke@0 965 "call thr_setconcurrency at thread create time to avoid " \
duke@0 966 "LWP starvation on MP systems (For Solaris Only)") \
duke@0 967 \
duke@0 968 develop(bool, UpdateHotSpotCompilerFileOnError, true, \
duke@0 969 "Should the system attempt to update the compiler file when " \
duke@0 970 "an error occurs?") \
duke@0 971 \
duke@0 972 product(bool, ReduceSignalUsage, false, \
duke@0 973 "Reduce the use of OS signals in Java and/or the VM") \
duke@0 974 \
duke@0 975 notproduct(bool, ValidateMarkSweep, false, \
duke@0 976 "Do extra validation during MarkSweep collection") \
duke@0 977 \
duke@0 978 notproduct(bool, RecordMarkSweepCompaction, false, \
duke@0 979 "Enable GC-to-GC recording and querying of compaction during " \
duke@0 980 "MarkSweep") \
duke@0 981 \
duke@0 982 develop_pd(bool, ShareVtableStubs, \
duke@0 983 "Share vtable stubs (smaller code but worse branch prediction") \
duke@0 984 \
duke@0 985 develop(bool, LoadLineNumberTables, true, \
duke@0 986 "Tells whether the class file parser loads line number tables") \
duke@0 987 \
duke@0 988 develop(bool, LoadLocalVariableTables, true, \
duke@0 989 "Tells whether the class file parser loads local variable tables")\
duke@0 990 \
duke@0 991 develop(bool, LoadLocalVariableTypeTables, true, \
duke@0 992 "Tells whether the class file parser loads local variable type tables")\
duke@0 993 \
duke@0 994 product(bool, AllowUserSignalHandlers, false, \
duke@0 995 "Do not complain if the application installs signal handlers " \
duke@0 996 "(Solaris & Linux only)") \
duke@0 997 \
duke@0 998 product(bool, UseSignalChaining, true, \
duke@0 999 "Use signal-chaining to invoke signal handlers installed " \
duke@0 1000 "by the application (Solaris & Linux only)") \
duke@0 1001 \
duke@0 1002 product(bool, UseAltSigs, false, \
duke@0 1003 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
phh@1064 1004 "internal signals (Solaris only)") \
duke@0 1005 \
duke@0 1006 product(bool, UseSpinning, false, \
duke@0 1007 "Use spinning in monitor inflation and before entry") \
duke@0 1008 \
duke@0 1009 product(bool, PreSpinYield, false, \
duke@0 1010 "Yield before inner spinning loop") \
duke@0 1011 \
duke@0 1012 product(bool, PostSpinYield, true, \
duke@0 1013 "Yield after inner spinning loop") \
duke@0 1014 \
duke@0 1015 product(bool, AllowJNIEnvProxy, false, \
duke@0 1016 "Allow JNIEnv proxies for jdbx") \
duke@0 1017 \
duke@0 1018 product(bool, JNIDetachReleasesMonitors, true, \
duke@0 1019 "JNI DetachCurrentThread releases monitors owned by thread") \
duke@0 1020 \
duke@0 1021 product(bool, RestoreMXCSROnJNICalls, false, \
duke@0 1022 "Restore MXCSR when returning from JNI calls") \
duke@0 1023 \
duke@0 1024 product(bool, CheckJNICalls, false, \
duke@0 1025 "Verify all arguments to JNI calls") \
duke@0 1026 \
duke@0 1027 product(bool, UseFastJNIAccessors, true, \
duke@0 1028 "Use optimized versions of Get<Primitive>Field") \
duke@0 1029 \
duke@0 1030 product(bool, EagerXrunInit, false, \
duke@0 1031 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
duke@0 1032 " but not all -Xrun libraries may support the state of the VM at this time") \
duke@0 1033 \
duke@0 1034 product(bool, PreserveAllAnnotations, false, \
duke@0 1035 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \
duke@0 1036 \
duke@0 1037 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
duke@0 1038 "Number of OutOfMemoryErrors preallocated with backtrace") \
duke@0 1039 \
duke@0 1040 product(bool, LazyBootClassLoader, true, \
duke@0 1041 "Enable/disable lazy opening of boot class path entries") \
duke@0 1042 \
duke@0 1043 diagnostic(bool, UseIncDec, true, \
duke@0 1044 "Use INC, DEC instructions on x86") \
duke@0 1045 \
kvn@219 1046 product(bool, UseNewLongLShift, false, \
kvn@219 1047 "Use optimized bitwise shift left") \
kvn@219 1048 \
duke@0 1049 product(bool, UseStoreImmI16, true, \
duke@0 1050 "Use store immediate 16-bits value instruction on x86") \
duke@0 1051 \
duke@0 1052 product(bool, UseAddressNop, false, \
duke@0 1053 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \
duke@0 1054 \
duke@0 1055 product(bool, UseXmmLoadAndClearUpper, true, \
duke@0 1056 "Load low part of XMM register and clear upper part") \
duke@0 1057 \
duke@0 1058 product(bool, UseXmmRegToRegMoveAll, false, \
duke@0 1059 "Copy all XMM register bits when moving value between registers") \
duke@0 1060 \
kvn@71 1061 product(bool, UseXmmI2D, false, \
kvn@71 1062 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
kvn@71 1063 \
kvn@71 1064 product(bool, UseXmmI2F, false, \
kvn@71 1065 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
kvn@71 1066 \
kvn@405 1067 product(bool, UseXMMForArrayCopy, false, \
kvn@405 1068 "Use SSE2 MOVQ instruction for Arraycopy") \
kvn@405 1069 \
kvn@405 1070 product(bool, UseUnalignedLoadStores, false, \
kvn@405 1071 "Use SSE2 MOVDQU instruction for Arraycopy") \
kvn@405 1072 \
duke@0 1073 product(intx, FieldsAllocationStyle, 1, \
kvn@1366 1074 "0 - type based with oops first, 1 - with oops last, " \
kvn@1366 1075 "2 - oops in super and sub classes are together") \
duke@0 1076 \
duke@0 1077 product(bool, CompactFields, true, \
duke@0 1078 "Allocate nonstatic fields in gaps between previous fields") \
duke@0 1079 \
duke@0 1080 notproduct(bool, PrintCompactFieldsSavings, false, \
duke@0 1081 "Print how many words were saved with CompactFields") \
duke@0 1082 \
duke@0 1083 product(bool, UseBiasedLocking, true, \
duke@0 1084 "Enable biased locking in JVM") \
duke@0 1085 \
duke@0 1086 product(intx, BiasedLockingStartupDelay, 4000, \
duke@0 1087 "Number of milliseconds to wait before enabling biased locking") \
duke@0 1088 \
duke@0 1089 diagnostic(bool, PrintBiasedLockingStatistics, false, \
duke@0 1090 "Print statistics of biased locking in JVM") \
duke@0 1091 \
duke@0 1092 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
duke@0 1093 "Threshold of number of revocations per type to try to " \
duke@0 1094 "rebias all objects in the heap of that type") \
duke@0 1095 \
duke@0 1096 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
duke@0 1097 "Threshold of number of revocations per type to permanently " \
duke@0 1098 "revoke biases of all objects in the heap of that type") \
duke@0 1099 \
duke@0 1100 product(intx, BiasedLockingDecayTime, 25000, \
duke@0 1101 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
duke@0 1102 "type after previous bulk rebias") \
duke@0 1103 \
duke@0 1104 /* tracing */ \
duke@0 1105 \
duke@0 1106 notproduct(bool, TraceRuntimeCalls, false, \
duke@0 1107 "Trace run-time calls") \
duke@0 1108 \
duke@0 1109 develop(bool, TraceJNICalls, false, \
duke@0 1110 "Trace JNI calls") \
duke@0 1111 \
duke@0 1112 notproduct(bool, TraceJVMCalls, false, \
duke@0 1113 "Trace JVM calls") \
duke@0 1114 \
never@370 1115 product(ccstr, TraceJVMTI, NULL, \
duke@0 1116 "Trace flags for JVMTI functions and events") \
duke@0 1117 \
dcubed@880 1118 product(bool, ForceFullGCJVMTIEpilogues, false, \
dcubed@880 1119 "Force 'Full GC' was done semantics for JVMTI GC epilogues") \
dcubed@880 1120 \
duke@0 1121 /* This option can change an EMCP method into an obsolete method. */ \
duke@0 1122 /* This can affect tests that except specific methods to be EMCP. */ \
duke@0 1123 /* This option should be used with caution. */ \
duke@0 1124 product(bool, StressLdcRewrite, false, \
duke@0 1125 "Force ldc -> ldc_w rewrite during RedefineClasses") \
duke@0 1126 \
duke@0 1127 product(intx, TraceRedefineClasses, 0, \
duke@0 1128 "Trace level for JVMTI RedefineClasses") \
duke@0 1129 \
jrose@1495 1130 develop(bool, StressMethodComparator, false, \
jrose@1495 1131 "run the MethodComparator on all loaded methods") \
jrose@1495 1132 \
duke@0 1133 /* change to false by default sometime after Mustang */ \
duke@0 1134 product(bool, VerifyMergedCPBytecodes, true, \
duke@0 1135 "Verify bytecodes after RedefineClasses constant pool merging") \
duke@0 1136 \
duke@0 1137 develop(bool, TraceJNIHandleAllocation, false, \
duke@0 1138 "Trace allocation/deallocation of JNI handle blocks") \
duke@0 1139 \
duke@0 1140 develop(bool, TraceThreadEvents, false, \
duke@0 1141 "Trace all thread events") \
duke@0 1142 \
duke@0 1143 develop(bool, TraceBytecodes, false, \
duke@0 1144 "Trace bytecode execution") \
duke@0 1145 \
duke@0 1146 develop(bool, TraceClassInitialization, false, \
duke@0 1147 "Trace class initialization") \
duke@0 1148 \
duke@0 1149 develop(bool, TraceExceptions, false, \
duke@0 1150 "Trace exceptions") \
duke@0 1151 \
duke@0 1152 develop(bool, TraceICs, false, \
duke@0 1153 "Trace inline cache changes") \
duke@0 1154 \
duke@0 1155 notproduct(bool, TraceInvocationCounterOverflow, false, \
duke@0 1156 "Trace method invocation counter overflow") \
duke@0 1157 \
duke@0 1158 develop(bool, TraceInlineCacheClearing, false, \
duke@0 1159 "Trace clearing of inline caches in nmethods") \
duke@0 1160 \
duke@0 1161 develop(bool, TraceDependencies, false, \
duke@0 1162 "Trace dependencies") \
duke@0 1163 \
duke@0 1164 develop(bool, VerifyDependencies, trueInDebug, \
duke@0 1165 "Exercise and verify the compilation dependency mechanism") \
duke@0 1166 \
duke@0 1167 develop(bool, TraceNewOopMapGeneration, false, \
duke@0 1168 "Trace OopMapGeneration") \
duke@0 1169 \
duke@0 1170 develop(bool, TraceNewOopMapGenerationDetailed, false, \
duke@0 1171 "Trace OopMapGeneration: print detailed cell states") \
duke@0 1172 \
duke@0 1173 develop(bool, TimeOopMap, false, \
duke@0 1174 "Time calls to GenerateOopMap::compute_map() in sum") \
duke@0 1175 \
duke@0 1176 develop(bool, TimeOopMap2, false, \
duke@0 1177 "Time calls to GenerateOopMap::compute_map() individually") \
duke@0 1178 \
duke@0 1179 develop(bool, TraceMonitorMismatch, false, \
duke@0 1180 "Trace monitor matching failures during OopMapGeneration") \
duke@0 1181 \
duke@0 1182 develop(bool, TraceOopMapRewrites, false, \
duke@0 1183 "Trace rewritting of method oops during oop map generation") \
duke@0 1184 \
duke@0 1185 develop(bool, TraceSafepoint, false, \
duke@0 1186 "Trace safepoint operations") \
duke@0 1187 \
duke@0 1188 develop(bool, TraceICBuffer, false, \
duke@0 1189 "Trace usage of IC buffer") \
duke@0 1190 \
duke@0 1191 develop(bool, TraceCompiledIC, false, \
duke@0 1192 "Trace changes of compiled IC") \
duke@0 1193 \
duke@0 1194 notproduct(bool, TraceZapDeadLocals, false, \
duke@0 1195 "Trace zapping dead locals") \
duke@0 1196 \
duke@0 1197 develop(bool, TraceStartupTime, false, \
duke@0 1198 "Trace setup time") \
duke@0 1199 \
duke@0 1200 develop(bool, TraceHPI, false, \
duke@0 1201 "Trace Host Porting Interface (HPI)") \
duke@0 1202 \
duke@0 1203 product(ccstr, HPILibPath, NULL, \
duke@0 1204 "Specify alternate path to HPI library") \
duke@0 1205 \
duke@0 1206 develop(bool, TraceProtectionDomainVerification, false, \
duke@0 1207 "Trace protection domain verifcation") \
duke@0 1208 \
duke@0 1209 develop(bool, TraceClearedExceptions, false, \
duke@0 1210 "Prints when an exception is forcibly cleared") \
duke@0 1211 \
duke@0 1212 product(bool, TraceClassResolution, false, \
duke@0 1213 "Trace all constant pool resolutions (for debugging)") \
duke@0 1214 \
duke@0 1215 product(bool, TraceBiasedLocking, false, \
duke@0 1216 "Trace biased locking in JVM") \
duke@0 1217 \
duke@0 1218 product(bool, TraceMonitorInflation, false, \
duke@0 1219 "Trace monitor inflation in JVM") \
duke@0 1220 \
duke@0 1221 /* assembler */ \
duke@0 1222 product(bool, Use486InstrsOnly, false, \
duke@0 1223 "Use 80486 Compliant instruction subset") \
duke@0 1224 \
duke@0 1225 /* gc */ \
duke@0 1226 \
duke@0 1227 product(bool, UseSerialGC, false, \
ysr@342 1228 "Use the serial garbage collector") \
ysr@342 1229 \
tonyp@1193 1230 product(bool, UseG1GC, false, \
ysr@342 1231 "Use the Garbage-First garbage collector") \
duke@0 1232 \
duke@0 1233 product(bool, UseParallelGC, false, \
duke@0 1234 "Use the Parallel Scavenge garbage collector") \
duke@0 1235 \
duke@0 1236 product(bool, UseParallelOldGC, false, \
duke@0 1237 "Use the Parallel Old garbage collector") \
duke@0 1238 \
duke@0 1239 product(bool, UseParallelOldGCCompacting, true, \
duke@0 1240 "In the Parallel Old garbage collector use parallel compaction") \
duke@0 1241 \
duke@0 1242 product(bool, UseParallelDensePrefixUpdate, true, \
duke@0 1243 "In the Parallel Old garbage collector use parallel dense" \
duke@0 1244 " prefix update") \
duke@0 1245 \
duke@0 1246 product(uintx, HeapMaximumCompactionInterval, 20, \
duke@0 1247 "How often should we maximally compact the heap (not allowing " \
duke@0 1248 "any dead space)") \
duke@0 1249 \
duke@0 1250 product(uintx, HeapFirstMaximumCompactionCount, 3, \
duke@0 1251 "The collection count for the first maximum compaction") \
duke@0 1252 \
duke@0 1253 product(bool, UseMaximumCompactionOnSystemGC, true, \
duke@0 1254 "In the Parallel Old garbage collector maximum compaction for " \
duke@0 1255 "a system GC") \
duke@0 1256 \
duke@0 1257 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
duke@0 1258 "The mean used by the par compact dead wood" \
duke@0 1259 "limiter (a number between 0-100).") \
duke@0 1260 \
duke@0 1261 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
duke@0 1262 "The standard deviation used by the par compact dead wood" \
duke@0 1263 "limiter (a number between 0-100).") \
duke@0 1264 \
duke@0 1265 product(bool, UseParallelOldGCDensePrefix, true, \
duke@0 1266 "Use a dense prefix with the Parallel Old garbage collector") \
duke@0 1267 \
duke@0 1268 product(uintx, ParallelGCThreads, 0, \
duke@0 1269 "Number of parallel threads parallel gc will use") \
duke@0 1270 \
jcoomes@483 1271 develop(bool, ParallelOldGCSplitALot, false, \
jcoomes@483 1272 "Provoke splitting (copying data from a young gen space to" \
jcoomes@483 1273 "multiple destination spaces)") \
jcoomes@483 1274 \
jcoomes@483 1275 develop(uintx, ParallelOldGCSplitInterval, 3, \
jcoomes@483 1276 "How often to provoke splitting a young gen space") \
duke@0 1277 \
jcoomes@375 1278 develop(bool, TraceRegionTasksQueuing, false, \
jcoomes@375 1279 "Trace the queuing of the region tasks") \
duke@0 1280 \
jmasa@1284 1281 product(uintx, ConcGCThreads, 0, \
jmasa@1284 1282 "Number of threads concurrent gc will use") \
ysr@342 1283 \
duke@0 1284 product(uintx, YoungPLABSize, 4096, \
duke@0 1285 "Size of young gen promotion labs (in HeapWords)") \
duke@0 1286 \
duke@0 1287 product(uintx, OldPLABSize, 1024, \
duke@0 1288 "Size of old gen promotion labs (in HeapWords)") \
duke@0 1289 \
duke@0 1290 product(uintx, GCTaskTimeStampEntries, 200, \
duke@0 1291 "Number of time stamp entries per gc worker thread") \
duke@0 1292 \
duke@0 1293 product(bool, AlwaysTenure, false, \
duke@0 1294 "Always tenure objects in eden. (ParallelGC only)") \
duke@0 1295 \
duke@0 1296 product(bool, NeverTenure, false, \
phh@1064 1297 "Never tenure objects in eden, May tenure on overflow " \
phh@1064 1298 "(ParallelGC only)") \
duke@0 1299 \
duke@0 1300 product(bool, ScavengeBeforeFullGC, true, \
phh@1064 1301 "Scavenge youngest generation before each full GC, " \
phh@1064 1302 "used with UseParallelGC") \
duke@0 1303 \
duke@0 1304 develop(bool, ScavengeWithObjectsInToSpace, false, \
duke@0 1305 "Allow scavenges to occur when to_space contains objects.") \
duke@0 1306 \
duke@0 1307 product(bool, UseConcMarkSweepGC, false, \
duke@0 1308 "Use Concurrent Mark-Sweep GC in the old generation") \
duke@0 1309 \
duke@0 1310 product(bool, ExplicitGCInvokesConcurrent, false, \
duke@0 1311 "A System.gc() request invokes a concurrent collection;" \
duke@0 1312 " (effective only when UseConcMarkSweepGC)") \
duke@0 1313 \
duke@0 1314 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
phh@1064 1315 "A System.gc() request invokes a concurrent collection and " \
phh@1064 1316 "also unloads classes during such a concurrent gc cycle " \
phh@1064 1317 "(effective only when UseConcMarkSweepGC)") \
duke@0 1318 \
ysr@1440 1319 product(bool, GCLockerInvokesConcurrent, false, \
ysr@1440 1320 "The exit of a JNI CS necessitating a scavenge also" \
ysr@1440 1321 " kicks off a bkgrd concurrent collection") \
ysr@1440 1322 \
duke@0 1323 develop(bool, UseCMSAdaptiveFreeLists, true, \
duke@0 1324 "Use Adaptive Free Lists in the CMS generation") \
duke@0 1325 \
duke@0 1326 develop(bool, UseAsyncConcMarkSweepGC, true, \
duke@0 1327 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
duke@0 1328 \
duke@0 1329 develop(bool, RotateCMSCollectionTypes, false, \
duke@0 1330 "Rotate the CMS collections among concurrent and STW") \
duke@0 1331 \
duke@0 1332 product(bool, UseCMSBestFit, true, \
duke@0 1333 "Use CMS best fit allocation strategy") \
duke@0 1334 \
duke@0 1335 product(bool, UseCMSCollectionPassing, true, \
duke@0 1336 "Use passing of collection from background to foreground") \
duke@0 1337 \
duke@0 1338 product(bool, UseParNewGC, false, \
duke@0 1339 "Use parallel threads in the new generation.") \
duke@0 1340 \
duke@0 1341 product(bool, ParallelGCVerbose, false, \
duke@0 1342 "Verbose output for parallel GC.") \
duke@0 1343 \
duke@0 1344 product(intx, ParallelGCBufferWastePct, 10, \
duke@0 1345 "wasted fraction of parallel allocation buffer.") \
duke@0 1346 \
duke@0 1347 product(bool, ParallelGCRetainPLAB, true, \
duke@0 1348 "Retain parallel allocation buffers across scavenges.") \
duke@0 1349 \
duke@0 1350 product(intx, TargetPLABWastePct, 10, \
duke@0 1351 "target wasted space in last buffer as pct of overall allocation")\
duke@0 1352 \
duke@0 1353 product(uintx, PLABWeight, 75, \
duke@0 1354 "Percentage (0-100) used to weight the current sample when" \
duke@0 1355 "computing exponentially decaying average for ResizePLAB.") \
duke@0 1356 \
duke@0 1357 product(bool, ResizePLAB, true, \
duke@0 1358 "Dynamically resize (survivor space) promotion labs") \
duke@0 1359 \
duke@0 1360 product(bool, PrintPLAB, false, \
duke@0 1361 "Print (survivor space) promotion labs sizing decisions") \
duke@0 1362 \
duke@0 1363 product(intx, ParGCArrayScanChunk, 50, \
duke@0 1364 "Scan a subset and push remainder, if array is bigger than this") \
duke@0 1365 \
ysr@695 1366 product(bool, ParGCUseLocalOverflow, false, \
ysr@695 1367 "Instead of a global overflow list, use local overflow stacks") \
ysr@695 1368 \
ysr@679 1369 product(bool, ParGCTrimOverflow, true, \
ysr@695 1370 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \
ysr@679 1371 \
ysr@534 1372 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
ysr@534 1373 "Whether we should simulate work queue overflow in ParNew") \
ysr@534 1374 \
ysr@534 1375 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
phh@1064 1376 "An `interval' counter that determines how frequently " \
phh@1064 1377 "we simulate overflow; a smaller number increases frequency") \
ysr@534 1378 \
ysr@534 1379 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
duke@0 1380 "The desired number of objects to claim from the overflow list") \
duke@0 1381 \
ysr@1145 1382 product(uintx, CMSParPromoteBlocksToClaim, 16, \
duke@0 1383 "Number of blocks to attempt to claim when refilling CMS LAB for "\
duke@0 1384 "parallel GC.") \
duke@0 1385 \
ysr@1145 1386 product(uintx, OldPLABWeight, 50, \
ysr@1145 1387 "Percentage (0-100) used to weight the current sample when" \
ysr@1145 1388 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \
ysr@1145 1389 \
ysr@1145 1390 product(bool, ResizeOldPLAB, true, \
ysr@1145 1391 "Dynamically resize (old gen) promotion labs") \
ysr@1145 1392 \
ysr@1145 1393 product(bool, PrintOldPLAB, false, \
ysr@1145 1394 "Print (old gen) promotion labs sizing decisions") \
ysr@1145 1395 \
ysr@1145 1396 product(uintx, CMSOldPLABMin, 16, \
ysr@1145 1397 "Min size of CMS gen promotion lab caches per worker per blksize")\
ysr@1145 1398 \
ysr@1145 1399 product(uintx, CMSOldPLABMax, 1024, \
ysr@1145 1400 "Max size of CMS gen promotion lab caches per worker per blksize")\
ysr@1145 1401 \
ysr@1145 1402 product(uintx, CMSOldPLABNumRefills, 4, \
ysr@1145 1403 "Nominal number of refills of CMS gen promotion lab cache" \
ysr@1145 1404 " per worker per block size") \
ysr@1145 1405 \
ysr@1145 1406 product(bool, CMSOldPLABResizeQuicker, false, \
ysr@1145 1407 "Whether to react on-the-fly during a scavenge to a sudden" \
ysr@1145 1408 " change in block demand rate") \
ysr@1145 1409 \
ysr@1145 1410 product(uintx, CMSOldPLABToleranceFactor, 4, \
ysr@1145 1411 "The tolerance of the phase-change detector for on-the-fly" \
ysr@1145 1412 " PLAB resizing during a scavenge") \
ysr@1145 1413 \
ysr@1145 1414 product(uintx, CMSOldPLABReactivityFactor, 2, \
ysr@1145 1415 "The gain in the feedback loop for on-the-fly PLAB resizing" \
ysr@1145 1416 " during a scavenge") \
ysr@1145 1417 \
ysr@1145 1418 product(uintx, CMSOldPLABReactivityCeiling, 10, \
ysr@1145 1419 "The clamping of the gain in the feedback loop for on-the-fly" \
ysr@1145 1420 " PLAB resizing during a scavenge") \
ysr@1145 1421 \
duke@0 1422 product(bool, AlwaysPreTouch, false, \
duke@0 1423 "It forces all freshly committed pages to be pre-touched.") \
duke@0 1424 \
duke@0 1425 product(bool, CMSUseOldDefaults, false, \
phh@1064 1426 "A flag temporarily introduced to allow reverting to some " \
phh@1064 1427 "older default settings; older as of 6.0") \
duke@0 1428 \
duke@0 1429 product(intx, CMSYoungGenPerWorker, 16*M, \
duke@0 1430 "The amount of young gen chosen by default per GC worker " \
phh@1064 1431 "thread available") \
duke@0 1432 \
ysr@342 1433 product(bool, GCOverheadReporting, false, \
ysr@342 1434 "Enables the GC overhead reporting facility") \
ysr@342 1435 \
ysr@342 1436 product(intx, GCOverheadReportingPeriodMS, 100, \
ysr@342 1437 "Reporting period for conc GC overhead reporting, in ms ") \
ysr@342 1438 \
duke@0 1439 product(bool, CMSIncrementalMode, false, \
duke@0 1440 "Whether CMS GC should operate in \"incremental\" mode") \
duke@0 1441 \
duke@0 1442 product(uintx, CMSIncrementalDutyCycle, 10, \
duke@0 1443 "CMS incremental mode duty cycle (a percentage, 0-100). If" \
duke@0 1444 "CMSIncrementalPacing is enabled, then this is just the initial" \
duke@0 1445 "value") \
duke@0 1446 \
duke@0 1447 product(bool, CMSIncrementalPacing, true, \
duke@0 1448 "Whether the CMS incremental mode duty cycle should be " \
duke@0 1449 "automatically adjusted") \
duke@0 1450 \
duke@0 1451 product(uintx, CMSIncrementalDutyCycleMin, 0, \
phh@1064 1452 "Lower bound on the duty cycle when CMSIncrementalPacing is " \
phh@1064 1453 "enabled (a percentage, 0-100)") \
duke@0 1454 \
duke@0 1455 product(uintx, CMSIncrementalSafetyFactor, 10, \
phh@1064 1456 "Percentage (0-100) used to add conservatism when computing the " \
phh@1064 1457 "duty cycle") \
duke@0 1458 \
duke@0 1459 product(uintx, CMSIncrementalOffset, 0, \
duke@0 1460 "Percentage (0-100) by which the CMS incremental mode duty cycle" \
phh@1064 1461 " is shifted to the right within the period between young GCs") \
duke@0 1462 \
ysr@1145 1463 product(uintx, CMSExpAvgFactor, 50, \
ysr@1145 1464 "Percentage (0-100) used to weight the current sample when" \
ysr@1145 1465 "computing exponential averages for CMS statistics.") \
ysr@1145 1466 \
ysr@1145 1467 product(uintx, CMS_FLSWeight, 75, \
ysr@1145 1468 "Percentage (0-100) used to weight the current sample when" \
ysr@1145 1469 "computing exponentially decating averages for CMS FLS statistics.") \
ysr@1145 1470 \
ysr@1145 1471 product(uintx, CMS_FLSPadding, 1, \
ysr@1145 1472 "The multiple of deviation from mean to use for buffering" \
duke@0 1473 "against volatility in free list demand.") \
duke@0 1474 \
duke@0 1475 product(uintx, FLSCoalescePolicy, 2, \
duke@0 1476 "CMS: Aggression level for coalescing, increasing from 0 to 4") \
duke@0 1477 \
ysr@1145 1478 product(bool, FLSAlwaysCoalesceLarge, false, \
ysr@1145 1479 "CMS: Larger free blocks are always available for coalescing") \
ysr@1145 1480 \
ysr@1145 1481 product(double, FLSLargestBlockCoalesceProximity, 0.99, \
ysr@1145 1482 "CMS: the smaller the percentage the greater the coalition force")\
ysr@1145 1483 \
ysr@1145 1484 product(double, CMSSmallCoalSurplusPercent, 1.05, \
ysr@1145 1485 "CMS: the factor by which to inflate estimated demand of small" \
ysr@1145 1486 " block sizes to prevent coalescing with an adjoining block") \
ysr@1145 1487 \
ysr@1145 1488 product(double, CMSLargeCoalSurplusPercent, 0.95, \
ysr@1145 1489 "CMS: the factor by which to inflate estimated demand of large" \
ysr@1145 1490 " block sizes to prevent coalescing with an adjoining block") \
ysr@1145 1491 \
ysr@1145 1492 product(double, CMSSmallSplitSurplusPercent, 1.10, \
ysr@1145 1493 "CMS: the factor by which to inflate estimated demand of small" \
ysr@1145 1494 " block sizes to prevent splitting to supply demand for smaller" \
ysr@1145 1495 " blocks") \
ysr@1145 1496 \
ysr@1145 1497 product(double, CMSLargeSplitSurplusPercent, 1.00, \
ysr@1145 1498 "CMS: the factor by which to inflate estimated demand of large" \
ysr@1145 1499 " block sizes to prevent splitting to supply demand for smaller" \
ysr@1145 1500 " blocks") \
ysr@1145 1501 \
ysr@1145 1502 product(bool, CMSExtrapolateSweep, false, \
ysr@1145 1503 "CMS: cushion for block demand during sweep") \
ysr@1145 1504 \
ysr@1145 1505 product(uintx, CMS_SweepWeight, 75, \
phh@1064 1506 "Percentage (0-100) used to weight the current sample when " \
phh@1064 1507 "computing exponentially decaying average for inter-sweep " \
phh@1064 1508 "duration") \
duke@0 1509 \
ysr@1145 1510 product(uintx, CMS_SweepPadding, 1, \
phh@1064 1511 "The multiple of deviation from mean to use for buffering " \
duke@0 1512 "against volatility in inter-sweep duration.") \
duke@0 1513 \
duke@0 1514 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
duke@0 1515 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
phh@1064 1516 "duration exceeds this threhold in milliseconds") \
duke@0 1517 \
duke@0 1518 develop(bool, CMSTraceIncrementalMode, false, \
duke@0 1519 "Trace CMS incremental mode") \
duke@0 1520 \
duke@0 1521 develop(bool, CMSTraceIncrementalPacing, false, \
duke@0 1522 "Trace CMS incremental mode pacing computation") \
duke@0 1523 \
duke@0 1524 develop(bool, CMSTraceThreadState, false, \
duke@0 1525 "Trace the CMS thread state (enable the trace_state() method)") \
duke@0 1526 \
duke@0 1527 product(bool, CMSClassUnloadingEnabled, false, \
duke@0 1528 "Whether class unloading enabled when using CMS GC") \
duke@0 1529 \
ysr@94 1530 product(uintx, CMSClassUnloadingMaxInterval, 0, \
ysr@94 1531 "When CMS class unloading is enabled, the maximum CMS cycle count"\
ysr@94 1532 " for which classes may not be unloaded") \
ysr@94 1533 \
duke@0 1534 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
duke@0 1535 "Compact when asked to collect CMS gen with clear_all_soft_refs") \
duke@0 1536 \
duke@0 1537 product(bool, UseCMSCompactAtFullCollection, true, \
duke@0 1538 "Use mark sweep compact at full collections") \
duke@0 1539 \
duke@0 1540 product(uintx, CMSFullGCsBeforeCompaction, 0, \
duke@0 1541 "Number of CMS full collection done before compaction if > 0") \
duke@0 1542 \
duke@0 1543 develop(intx, CMSDictionaryChoice, 0, \
duke@0 1544 "Use BinaryTreeDictionary as default in the CMS generation") \
duke@0 1545 \
duke@0 1546 product(uintx, CMSIndexedFreeListReplenish, 4, \
ysr@1701 1547 "Replenish an indexed free list with this number of chunks") \
duke@0 1548 \
ysr@1145 1549 product(bool, CMSReplenishIntermediate, true, \
ysr@1145 1550 "Replenish all intermediate free-list caches") \
ysr@1145 1551 \
ysr@1145 1552 product(bool, CMSSplitIndexedFreeListBlocks, true, \
ysr@1701 1553 "When satisfying batched demand, split blocks from the " \
ysr@1145 1554 "IndexedFreeList whose size is a multiple of requested size") \
ysr@1145 1555 \
duke@0 1556 product(bool, CMSLoopWarn, false, \
duke@0 1557 "Warn in case of excessive CMS looping") \
duke@0 1558 \
duke@0 1559 develop(bool, CMSOverflowEarlyRestoration, false, \
duke@0 1560 "Whether preserved marks should be restored early") \
duke@0 1561 \
jmasa@1284 1562 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
jmasa@1284 1563 "Size of marking stack") \
jmasa@1284 1564 \
jmasa@1284 1565 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
jmasa@1284 1566 "Max size of marking stack") \
duke@0 1567 \
duke@0 1568 notproduct(bool, CMSMarkStackOverflowALot, false, \
duke@0 1569 "Whether we should simulate frequent marking stack / work queue" \
duke@0 1570 " overflow") \
duke@0 1571 \
ysr@534 1572 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
ysr@534 1573 "An `interval' counter that determines how frequently" \
duke@0 1574 " we simulate overflow; a smaller number increases frequency") \
duke@0 1575 \
duke@0 1576 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
duke@0 1577 "(Temporary, subject to experimentation)" \
duke@0 1578 "Maximum number of abortable preclean iterations, if > 0") \
duke@0 1579 \
duke@0 1580 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
duke@0 1581 "(Temporary, subject to experimentation)" \
duke@0 1582 "Maximum time in abortable preclean in ms") \
duke@0 1583 \
duke@0 1584 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
duke@0 1585 "(Temporary, subject to experimentation)" \
duke@0 1586 "Nominal minimum work per abortable preclean iteration") \
duke@0 1587 \
duke@0 1588 product(intx, CMSAbortablePrecleanWaitMillis, 100, \
duke@0 1589 "(Temporary, subject to experimentation)" \
duke@0 1590 " Time that we sleep between iterations when not given" \
duke@0 1591 " enough work per iteration") \
duke@0 1592 \
duke@0 1593 product(uintx, CMSRescanMultiple, 32, \
duke@0 1594 "Size (in cards) of CMS parallel rescan task") \
duke@0 1595 \
duke@0 1596 product(uintx, CMSConcMarkMultiple, 32, \
duke@0 1597 "Size (in cards) of CMS concurrent MT marking task") \
duke@0 1598 \
duke@0 1599 product(uintx, CMSRevisitStackSize, 1*M, \
duke@0 1600 "Size of CMS KlassKlass revisit stack") \
duke@0 1601 \
duke@0 1602 product(bool, CMSAbortSemantics, false, \
duke@0 1603 "Whether abort-on-overflow semantics is implemented") \
duke@0 1604 \
duke@0 1605 product(bool, CMSParallelRemarkEnabled, true, \
duke@0 1606 "Whether parallel remark enabled (only if ParNewGC)") \
duke@0 1607 \
duke@0 1608 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
duke@0 1609 "Whether parallel remark of survivor space" \
duke@0 1610 " enabled (effective only if CMSParallelRemarkEnabled)") \
duke@0 1611 \
duke@0 1612 product(bool, CMSPLABRecordAlways, true, \
duke@0 1613 "Whether to always record survivor space PLAB bdries" \
duke@0 1614 " (effective only if CMSParallelSurvivorRemarkEnabled)") \
duke@0 1615 \
duke@0 1616 product(bool, CMSConcurrentMTEnabled, true, \
duke@0 1617 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \
duke@0 1618 \
duke@0 1619 product(bool, CMSPermGenPrecleaningEnabled, true, \
duke@0 1620 "Whether concurrent precleaning enabled in perm gen" \
duke@0 1621 " (effective only when CMSPrecleaningEnabled is true)") \
duke@0 1622 \
duke@0 1623 product(bool, CMSPrecleaningEnabled, true, \
duke@0 1624 "Whether concurrent precleaning enabled") \
duke@0 1625 \
duke@0 1626 product(uintx, CMSPrecleanIter, 3, \
duke@0 1627 "Maximum number of precleaning iteration passes") \
duke@0 1628 \
duke@0 1629 product(uintx, CMSPrecleanNumerator, 2, \
duke@0 1630 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
duke@0 1631 " ratio") \
duke@0 1632 \
duke@0 1633 product(uintx, CMSPrecleanDenominator, 3, \
duke@0 1634 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
duke@0 1635 " ratio") \
duke@0 1636 \
ysr@452 1637 product(bool, CMSPrecleanRefLists1, true, \
duke@0 1638 "Preclean ref lists during (initial) preclean phase") \
duke@0 1639 \
duke@0 1640 product(bool, CMSPrecleanRefLists2, false, \
duke@0 1641 "Preclean ref lists during abortable preclean phase") \
duke@0 1642 \
duke@0 1643 product(bool, CMSPrecleanSurvivors1, false, \
duke@0 1644 "Preclean survivors during (initial) preclean phase") \
duke@0 1645 \
duke@0 1646 product(bool, CMSPrecleanSurvivors2, true, \
duke@0 1647 "Preclean survivors during abortable preclean phase") \
duke@0 1648 \
duke@0 1649 product(uintx, CMSPrecleanThreshold, 1000, \
duke@0 1650 "Don't re-iterate if #dirty cards less than this") \
duke@0 1651 \
duke@0 1652 product(bool, CMSCleanOnEnter, true, \
duke@0 1653 "Clean-on-enter optimization for reducing number of dirty cards") \
duke@0 1654 \
duke@0 1655 product(uintx, CMSRemarkVerifyVariant, 1, \
duke@0 1656 "Choose variant (1,2) of verification following remark") \
duke@0 1657 \
duke@0 1658 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
duke@0 1659 "If Eden used is below this value, don't try to schedule remark") \
duke@0 1660 \
duke@0 1661 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
duke@0 1662 "The Eden occupancy % at which to try and schedule remark pause") \
duke@0 1663 \
duke@0 1664 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
duke@0 1665 "Start sampling Eden top at least before yg occupancy reaches" \
duke@0 1666 " 1/<ratio> of the size at which we plan to schedule remark") \
duke@0 1667 \
duke@0 1668 product(uintx, CMSSamplingGrain, 16*K, \
duke@0 1669 "The minimum distance between eden samples for CMS (see above)") \
duke@0 1670 \
duke@0 1671 product(bool, CMSScavengeBeforeRemark, false, \
duke@0 1672 "Attempt scavenge before the CMS remark step") \
duke@0 1673 \
duke@0 1674 develop(bool, CMSTraceSweeper, false, \
duke@0 1675 "Trace some actions of the CMS sweeper") \
duke@0 1676 \
duke@0 1677 product(uintx, CMSWorkQueueDrainThreshold, 10, \
duke@0 1678 "Don't drain below this size per parallel worker/thief") \
duke@0 1679 \
duke@0 1680 product(intx, CMSWaitDuration, 2000, \
duke@0 1681 "Time in milliseconds that CMS thread waits for young GC") \
duke@0 1682 \
duke@0 1683 product(bool, CMSYield, true, \
duke@0 1684 "Yield between steps of concurrent mark & sweep") \
duke@0 1685 \
duke@0 1686 product(uintx, CMSBitMapYieldQuantum, 10*M, \
duke@0 1687 "Bitmap operations should process at most this many bits" \
duke@0 1688 "between yields") \
duke@0 1689 \
ysr@1145 1690 product(bool, CMSDumpAtPromotionFailure, false, \
ysr@1145 1691 "Dump useful information about the state of the CMS old " \
ysr@1145 1692 " generation upon a promotion failure.") \
ysr@1145 1693 \
ysr@1145 1694 product(bool, CMSPrintChunksInDump, false, \
ysr@1145 1695 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
ysr@1145 1696 " more detailed information about the free chunks.") \
ysr@1145 1697 \
ysr@1145 1698 product(bool, CMSPrintObjectsInDump, false, \
ysr@1145 1699 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
ysr@1145 1700 " more detailed information about the allocated objects.") \
ysr@1145 1701 \
duke@0 1702 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
duke@0 1703 "Verify that all refs across the FLS boundary " \
duke@0 1704 " are to valid objects") \
duke@0 1705 \
duke@0 1706 diagnostic(bool, FLSVerifyLists, false, \
duke@0 1707 "Do lots of (expensive) FreeListSpace verification") \
duke@0 1708 \
duke@0 1709 diagnostic(bool, FLSVerifyIndexTable, false, \
duke@0 1710 "Do lots of (expensive) FLS index table verification") \
duke@0 1711 \
duke@0 1712 develop(bool, FLSVerifyDictionary, false, \
duke@0 1713 "Do lots of (expensive) FLS dictionary verification") \
duke@0 1714 \
duke@0 1715 develop(bool, VerifyBlockOffsetArray, false, \
duke@0 1716 "Do (expensive!) block offset array verification") \
duke@0 1717 \
ysr@1640 1718 product(bool, BlockOffsetArrayUseUnallocatedBlock, false, \
duke@0 1719 "Maintain _unallocated_block in BlockOffsetArray" \
duke@0 1720 " (currently applicable only to CMS collector)") \
duke@0 1721 \
duke@0 1722 develop(bool, TraceCMSState, false, \
duke@0 1723 "Trace the state of the CMS collection") \
duke@0 1724 \
duke@0 1725 product(intx, RefDiscoveryPolicy, 0, \
duke@0 1726 "Whether reference-based(0) or referent-based(1)") \
duke@0 1727 \
duke@0 1728 product(bool, ParallelRefProcEnabled, false, \
duke@0 1729 "Enable parallel reference processing whenever possible") \
duke@0 1730 \
duke@0 1731 product(bool, ParallelRefProcBalancingEnabled, true, \
duke@0 1732 "Enable balancing of reference processing queues") \
duke@0 1733 \
duke@0 1734 product(intx, CMSTriggerRatio, 80, \
duke@0 1735 "Percentage of MinHeapFreeRatio in CMS generation that is " \
phh@1064 1736 "allocated before a CMS collection cycle commences") \
duke@0 1737 \
ysr@94 1738 product(intx, CMSTriggerPermRatio, 80, \
phh@1064 1739 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \
phh@1064 1740 "is allocated before a CMS collection cycle commences, that " \
phh@1064 1741 "also collects the perm generation") \
ysr@94 1742 \
ysr@94 1743 product(uintx, CMSBootstrapOccupancy, 50, \
duke@0 1744 "Percentage CMS generation occupancy at which to " \
phh@1064 1745 "initiate CMS collection for bootstrapping collection stats") \
duke@0 1746 \
duke@0 1747 product(intx, CMSInitiatingOccupancyFraction, -1, \
duke@0 1748 "Percentage CMS generation occupancy to start a CMS collection " \
phh@1064 1749 "cycle. A negative value means that CMSTriggerRatio is used") \
ysr@94 1750 \
tonyp@1283 1751 product(uintx, InitiatingHeapOccupancyPercent, 45, \
tonyp@1283 1752 "Percentage of the (entire) heap occupancy to start a " \
tonyp@1283 1753 "concurrent GC cycle. It us used by GCs that trigger a " \
tonyp@1283 1754 "concurrent GC cycle based on the occupancy of the entire heap, " \
tonyp@1283 1755 "not just one of the generations (e.g., G1). A value of 0 " \
tonyp@1283 1756 "denotes 'do constant GC cycles'.") \
tonyp@1283 1757 \
ysr@94 1758 product(intx, CMSInitiatingPermOccupancyFraction, -1, \
phh@1064 1759 "Percentage CMS perm generation occupancy to start a " \
phh@1064 1760 "CMScollection cycle. A negative value means that " \
phh@1064 1761 "CMSTriggerPermRatio is used") \
duke@0 1762 \
duke@0 1763 product(bool, UseCMSInitiatingOccupancyOnly, false, \
duke@0 1764 "Only use occupancy as a crierion for starting a CMS collection") \
duke@0 1765 \
ysr@94 1766 product(intx, CMSIsTooFullPercentage, 98, \
phh@1064 1767 "An absolute ceiling above which CMS will always consider the " \
phh@1064 1768 "perm gen ripe for collection") \
ysr@94 1769 \
duke@0 1770 develop(bool, CMSTestInFreeList, false, \
duke@0 1771 "Check if the coalesced range is already in the " \
phh@1064 1772 "free lists as claimed") \
duke@0 1773 \
duke@0 1774 notproduct(bool, CMSVerifyReturnedBytes, false, \
duke@0 1775 "Check that all the garbage collected was returned to the " \
duke@0 1776 "free lists.") \
duke@0 1777 \
duke@0 1778 notproduct(bool, ScavengeALot, false, \
duke@0 1779 "Force scavenge at every Nth exit from the runtime system " \
duke@0 1780 "(N=ScavengeALotInterval)") \
duke@0 1781 \
duke@0 1782 develop(bool, FullGCALot, false, \
duke@0 1783 "Force full gc at every Nth exit from the runtime system " \
duke@0 1784 "(N=FullGCALotInterval)") \
duke@0 1785 \
duke@0 1786 notproduct(bool, GCALotAtAllSafepoints, false, \
duke@0 1787 "Enforce ScavengeALot/GCALot at all potential safepoints") \
duke@0 1788 \
duke@0 1789 product(bool, HandlePromotionFailure, true, \
phh@1064 1790 "The youngest generation collection does not require " \
phh@1064 1791 "a guarantee of full promotion of all live objects.") \
duke@0 1792 \
ysr@1145 1793 product(bool, PrintPromotionFailure, false, \
ysr@1145 1794 "Print additional diagnostic information following " \
ysr@1145 1795 " promotion failure") \
ysr@1145 1796 \
duke@0 1797 notproduct(bool, PromotionFailureALot, false, \
duke@0 1798 "Use promotion failure handling on every youngest generation " \
duke@0 1799 "collection") \
duke@0 1800 \
duke@0 1801 develop(uintx, PromotionFailureALotCount, 1000, \
duke@0 1802 "Number of promotion failures occurring at ParGCAllocBuffer" \
duke@0 1803 "refill attempts (ParNew) or promotion attempts " \
duke@0 1804 "(other young collectors) ") \
duke@0 1805 \
duke@0 1806 develop(uintx, PromotionFailureALotInterval, 5, \
duke@0 1807 "Total collections between promotion failures alot") \
duke@0 1808 \
duke@0 1809 develop(intx, WorkStealingSleepMillis, 1, \
duke@0 1810 "Sleep time when sleep is used for yields") \
duke@0 1811 \
duke@0 1812 develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \
duke@0 1813 "Number of yields before a sleep is done during workstealing") \
duke@0 1814 \
jmasa@546 1815 develop(uintx, WorkStealingHardSpins, 4096, \
jmasa@546 1816 "Number of iterations in a spin loop between checks on " \
jmasa@546 1817 "time out of hard spin") \
jmasa@546 1818 \
jmasa@546 1819 develop(uintx, WorkStealingSpinToYieldRatio, 10, \
jmasa@546 1820 "Ratio of hard spins to calls to yield") \
jmasa@546 1821 \
ysr@534 1822 product(uintx, PreserveMarkStackSize, 1024, \
phh@1064 1823 "Size for stack used in promotion failure handling") \
duke@0 1824 \
jcoomes@1311 1825 develop(uintx, ObjArrayMarkingStride, 512, \
jcoomes@1311 1826 "Number of ObjArray elements to push onto the marking stack" \
jcoomes@1311 1827 "before pushing a continuation entry") \
jcoomes@1311 1828 \
duke@0 1829 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
duke@0 1830 \
duke@0 1831 product_pd(bool, ResizeTLAB, \
duke@0 1832 "Dynamically resize tlab size for threads") \
duke@0 1833 \
duke@0 1834 product(bool, ZeroTLAB, false, \
duke@0 1835 "Zero out the newly created TLAB") \
duke@0 1836 \
ysr@342 1837 product(bool, FastTLABRefill, true, \
ysr@342 1838 "Use fast TLAB refill code") \
ysr@342 1839 \
duke@0 1840 product(bool, PrintTLAB, false, \
duke@0 1841 "Print various TLAB related information") \
duke@0 1842 \
duke@0 1843 product(bool, TLABStats, true, \
duke@0 1844 "Print various TLAB related information") \
duke@0 1845 \
ysr@941 1846 product(bool, PrintRevisitStats, false, \
ysr@941 1847 "Print revisit (klass and MDO) stack related information") \
ysr@941 1848 \
duke@0 1849 product_pd(bool, NeverActAsServerClassMachine, \
duke@0 1850 "Never act like a server-class machine") \
duke@0 1851 \
duke@0 1852 product(bool, AlwaysActAsServerClassMachine, false, \
duke@0 1853 "Always act like a server-class machine") \
duke@0 1854 \
phh@1064 1855 product_pd(uint64_t, MaxRAM, \
phh@1064 1856 "Real memory size (in bytes) used to set maximum heap size") \
phh@1064 1857 \
phh@1064 1858 product(uintx, ErgoHeapSizeLimit, 0, \
phh@1064 1859 "Maximum ergonomically set heap size (in bytes); zero means use " \
phh@1064 1860 "MaxRAM / MaxRAMFraction") \
phh@1064 1861 \
phh@1064 1862 product(uintx, MaxRAMFraction, 4, \
phh@1064 1863 "Maximum fraction (1/n) of real memory used for maximum heap " \
phh@1064 1864 "size") \
duke@0 1865 \
duke@0 1866 product(uintx, DefaultMaxRAMFraction, 4, \
phh@1064 1867 "Maximum fraction (1/n) of real memory used for maximum heap " \
phh@1064 1868 "size; deprecated: to be renamed to MaxRAMFraction") \
phh@1064 1869 \
phh@1064 1870 product(uintx, MinRAMFraction, 2, \
phh@1064 1871 "Minimum fraction (1/n) of real memory used for maxmimum heap " \
phh@1064 1872 "size on systems with small physical memory size") \
phh@1064 1873 \
phh@1064 1874 product(uintx, InitialRAMFraction, 64, \
phh@1064 1875 "Fraction (1/n) of real memory used for initial heap size") \
duke@0 1876 \
duke@0 1877 product(bool, UseAutoGCSelectPolicy, false, \
duke@0 1878 "Use automatic collection selection policy") \
duke@0 1879 \
duke@0 1880 product(uintx, AutoGCSelectPauseMillis, 5000, \
duke@0 1881 "Automatic GC selection pause threshhold in ms") \
duke@0 1882 \
duke@0 1883 product(bool, UseAdaptiveSizePolicy, true, \
duke@0 1884 "Use adaptive generation sizing policies") \
duke@0 1885 \
duke@0 1886 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
duke@0 1887 "Use adaptive survivor sizing policies") \
duke@0 1888 \
duke@0 1889 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
duke@0 1890 "Use adaptive young-old sizing policies at minor collections") \
duke@0 1891 \
duke@0 1892 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
duke@0 1893 "Use adaptive young-old sizing policies at major collections") \
duke@0 1894 \
duke@0 1895 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
duke@0 1896 "Use statistics from System.GC for adaptive size policy") \
duke@0 1897 \
duke@0 1898 product(bool, UseAdaptiveGCBoundary, false, \
duke@0 1899 "Allow young-old boundary to move") \
duke@0 1900 \
duke@0 1901 develop(bool, TraceAdaptiveGCBoundary, false, \
duke@0 1902 "Trace young-old boundary moves") \
duke@0 1903 \
duke@0 1904 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
duke@0 1905 "Resize the virtual spaces of the young or old generations") \
duke@0 1906 \
duke@0 1907 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
duke@0 1908 "Policy for changeing generation size for throughput goals") \
duke@0 1909 \
duke@0 1910 product(uintx, AdaptiveSizePausePolicy, 0, \
duke@0 1911 "Policy for changing generation size for pause goals") \
duke@0 1912 \
duke@0 1913 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
duke@0 1914 "Adjust tenured generation to achive a minor pause goal") \
duke@0 1915 \
duke@0 1916 develop(bool, PSAdjustYoungGenForMajorPause, false, \
duke@0 1917 "Adjust young generation to achive a major pause goal") \
duke@0 1918 \
duke@0 1919 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
duke@0 1920 "Number of steps where heuristics is used before data is used") \
duke@0 1921 \
duke@0 1922 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
duke@0 1923 "Number of collections before the adaptive sizing is started") \
duke@0 1924 \
duke@0 1925 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
phh@1064 1926 "Collecton interval for printing information; zero => never") \
duke@0 1927 \
duke@0 1928 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
duke@0 1929 "Use adaptive minimum footprint as a goal") \
duke@0 1930 \
duke@0 1931 product(uintx, AdaptiveSizePolicyWeight, 10, \
duke@0 1932 "Weight given to exponential resizing, between 0 and 100") \
duke@0 1933 \
duke@0 1934 product(uintx, AdaptiveTimeWeight, 25, \
duke@0 1935 "Weight given to time in adaptive policy, between 0 and 100") \
duke@0 1936 \
duke@0 1937 product(uintx, PausePadding, 1, \
duke@0 1938 "How much buffer to keep for pause time") \
duke@0 1939 \
duke@0 1940 product(uintx, PromotedPadding, 3, \
duke@0 1941 "How much buffer to keep for promotion failure") \
duke@0 1942 \
duke@0 1943 product(uintx, SurvivorPadding, 3, \
duke@0 1944 "How much buffer to keep for survivor overflow") \
duke@0 1945 \
duke@0 1946 product(uintx, AdaptivePermSizeWeight, 20, \
duke@0 1947 "Weight for perm gen exponential resizing, between 0 and 100") \
duke@0 1948 \
duke@0 1949 product(uintx, PermGenPadding, 3, \
duke@0 1950 "How much buffer to keep for perm gen sizing") \
duke@0 1951 \
duke@0 1952 product(uintx, ThresholdTolerance, 10, \
duke@0 1953 "Allowed collection cost difference between generations") \
duke@0 1954 \
duke@0 1955 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
phh@1064 1956 "If collection costs are within margin, reduce both by full " \
phh@1064 1957 "delta") \
duke@0 1958 \
duke@0 1959 product(uintx, YoungGenerationSizeIncrement, 20, \
duke@0 1960 "Adaptive size percentage change in young generation") \
duke@0 1961 \
duke@0 1962 product(uintx, YoungGenerationSizeSupplement, 80, \
duke@0 1963 "Supplement to YoungedGenerationSizeIncrement used at startup") \
duke@0 1964 \
duke@0 1965 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
duke@0 1966 "Decay factor to YoungedGenerationSizeSupplement") \
duke@0 1967 \
duke@0 1968 product(uintx, TenuredGenerationSizeIncrement, 20, \
duke@0 1969 "Adaptive size percentage change in tenured generation") \
duke@0 1970 \
duke@0 1971 product(uintx, TenuredGenerationSizeSupplement, 80, \
duke@0 1972 "Supplement to TenuredGenerationSizeIncrement used at startup") \
duke@0 1973 \
duke@0 1974 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
duke@0 1975 "Decay factor to TenuredGenerationSizeIncrement") \
duke@0 1976 \
duke@0 1977 product(uintx, MaxGCPauseMillis, max_uintx, \
johnc@751 1978 "Adaptive size policy maximum GC pause time goal in msec, " \
johnc@751 1979 "or (G1 Only) the max. GC time per MMU time slice") \
johnc@751 1980 \
tonyp@1532 1981 product(uintx, GCPauseIntervalMillis, 0, \
johnc@751 1982 "Time slice for MMU specification") \
duke@0 1983 \
duke@0 1984 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
duke@0 1985 "Adaptive size policy maximum GC minor pause time goal in msec") \
duke@0 1986 \
duke@0 1987 product(uintx, GCTimeRatio, 99, \
duke@0 1988 "Adaptive size policy application time to GC time ratio") \
duke@0 1989 \
duke@0 1990 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
duke@0 1991 "Adaptive size scale down factor for shrinking") \
duke@0 1992 \
duke@0 1993 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
duke@0 1994 "Adaptive size decays the major cost for long major intervals") \
duke@0 1995 \
duke@0 1996 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
duke@0 1997 "Time scale over which major costs decay") \
duke@0 1998 \
duke@0 1999 product(uintx, MinSurvivorRatio, 3, \
duke@0 2000 "Minimum ratio of young generation/survivor space size") \
duke@0 2001 \
duke@0 2002 product(uintx, InitialSurvivorRatio, 8, \
duke@0 2003 "Initial ratio of eden/survivor space size") \
duke@0 2004 \
duke@0 2005 product(uintx, BaseFootPrintEstimate, 256*M, \
duke@0 2006 "Estimate of footprint other than Java Heap") \
duke@0 2007 \
duke@0 2008 product(bool, UseGCOverheadLimit, true, \
duke@0 2009 "Use policy to limit of proportion of time spent in GC " \
duke@0 2010 "before an OutOfMemory error is thrown") \
duke@0 2011 \
duke@0 2012 product(uintx, GCTimeLimit, 98, \
duke@0 2013 "Limit of proportion of time spent in GC before an OutOfMemory" \
duke@0 2014 "error is thrown (used with GCHeapFreeLimit)") \
duke@0 2015 \
duke@0 2016 product(uintx, GCHeapFreeLimit, 2, \
duke@0 2017 "Minimum percentage of free space after a full GC before an " \
duke@0 2018 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
duke@0 2019 \
duke@0 2020 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
duke@0 2021 "Number of consecutive collections before gc time limit fires") \
duke@0 2022 \
duke@0 2023 product(bool, PrintAdaptiveSizePolicy, false, \
duke@0 2024 "Print information about AdaptiveSizePolicy") \
duke@0 2025 \
duke@0 2026 product(intx, PrefetchCopyIntervalInBytes, -1, \
duke@0 2027 "How far ahead to prefetch destination area (<= 0 means off)") \
duke@0 2028 \
duke@0 2029 product(intx, PrefetchScanIntervalInBytes, -1, \
duke@0 2030 "How far ahead to prefetch scan area (<= 0 means off)") \
duke@0 2031 \
duke@0 2032 product(intx, PrefetchFieldsAhead, -1, \
duke@0 2033 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
duke@0 2034 \
duke@0 2035 develop(bool, UsePrefetchQueue, true, \
duke@0 2036 "Use the prefetch queue during PS promotion") \
duke@0 2037 \
duke@0 2038 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
duke@0 2039 "Verify system before exiting") \
duke@0 2040 \
duke@0 2041 diagnostic(bool, VerifyBeforeGC, false, \
duke@0 2042 "Verify memory system before GC") \
duke@0 2043 \
duke@0 2044 diagnostic(bool, VerifyAfterGC, false, \
duke@0 2045 "Verify memory system after GC") \
duke@0 2046 \
duke@0 2047 diagnostic(bool, VerifyDuringGC, false, \
duke@0 2048 "Verify memory system during GC (between phases)") \
duke@0 2049 \
tonyp@390 2050 diagnostic(bool, GCParallelVerificationEnabled, true, \
tonyp@390 2051 "Enable parallel memory system verification") \
tonyp@390 2052 \
ysr@1166 2053 diagnostic(bool, DeferInitialCardMark, false, \
ysr@1166 2054 "When +ReduceInitialCardMarks, explicitly defer any that " \
ysr@1166 2055 "may arise from new_pre_store_barrier") \
ysr@1166 2056 \
duke@0 2057 diagnostic(bool, VerifyRememberedSets, false, \
duke@0 2058 "Verify GC remembered sets") \
duke@0 2059 \
duke@0 2060 diagnostic(bool, VerifyObjectStartArray, true, \
duke@0 2061 "Verify GC object start array if verify before/after") \
duke@0 2062 \
duke@0 2063 product(bool, DisableExplicitGC, false, \
duke@0 2064 "Tells whether calling System.gc() does a full GC") \
duke@0 2065 \
duke@0 2066 notproduct(bool, CheckMemoryInitialization, false, \
duke@0 2067 "Checks memory initialization") \
duke@0 2068 \
duke@0 2069 product(bool, CollectGen0First, false, \
duke@0 2070 "Collect youngest generation before each full GC") \
duke@0 2071 \
duke@0 2072 diagnostic(bool, BindCMSThreadToCPU, false, \
duke@0 2073 "Bind CMS Thread to CPU if possible") \
duke@0 2074 \
duke@0 2075 diagnostic(uintx, CPUForCMSThread, 0, \
duke@0 2076 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
duke@0 2077 \
duke@0 2078 product(bool, BindGCTaskThreadsToCPUs, false, \
duke@0 2079 "Bind GCTaskThreads to CPUs if possible") \
duke@0 2080 \
duke@0 2081 product(bool, UseGCTaskAffinity, false, \
duke@0 2082 "Use worker affinity when asking for GCTasks") \
duke@0 2083 \
duke@0 2084 product(uintx, ProcessDistributionStride, 4, \
duke@0 2085 "Stride through processors when distributing processes") \
duke@0 2086 \
duke@0 2087 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
duke@0 2088 "number of times the coordinator GC thread will sleep while " \
duke@0 2089 "yielding before giving up and resuming GC") \
duke@0 2090 \
duke@0 2091 product(uintx, CMSYieldSleepCount, 0, \
duke@0 2092 "number of times a GC thread (minus the coordinator) " \
duke@0 2093 "will sleep while yielding before giving up and resuming GC") \
duke@0 2094 \
duke@0 2095 /* gc tracing */ \
duke@0 2096 manageable(bool, PrintGC, false, \
duke@0 2097 "Print message at garbage collect") \
duke@0 2098 \
duke@0 2099 manageable(bool, PrintGCDetails, false, \
duke@0 2100 "Print more details at garbage collect") \
duke@0 2101 \
duke@0 2102 manageable(bool, PrintGCDateStamps, false, \
duke@0 2103 "Print date stamps at garbage collect") \
duke@0 2104 \
duke@0 2105 manageable(bool, PrintGCTimeStamps, false, \
duke@0 2106 "Print timestamps at garbage collect") \
duke@0 2107 \
duke@0 2108 product(bool, PrintGCTaskTimeStamps, false, \
duke@0 2109 "Print timestamps for individual gc worker thread tasks") \
duke@0 2110 \
duke@0 2111 develop(intx, ConcGCYieldTimeout, 0, \
duke@0 2112 "If non-zero, assert that GC threads yield within this # of ms.") \
duke@0 2113 \
duke@0 2114 notproduct(bool, TraceMarkSweep, false, \
duke@0 2115 "Trace mark sweep") \
duke@0 2116 \
duke@0 2117 product(bool, PrintReferenceGC, false, \
duke@0 2118 "Print times spent handling reference objects during GC " \
duke@0 2119 " (enabled only when PrintGCDetails)") \
duke@0 2120 \
duke@0 2121 develop(bool, TraceReferenceGC, false, \
duke@0 2122 "Trace handling of soft/weak/final/phantom references") \
duke@0 2123 \
duke@0 2124 develop(bool, TraceFinalizerRegistration, false, \
duke@0 2125 "Trace registration of final references") \
duke@0 2126 \
duke@0 2127 notproduct(bool, TraceScavenge, false, \
duke@0 2128 "Trace scavenge") \
duke@0 2129 \
duke@0 2130 product_rw(bool, TraceClassLoading, false, \
duke@0 2131 "Trace all classes loaded") \
duke@0 2132 \
duke@0 2133 product(bool, TraceClassLoadingPreorder, false, \
duke@0 2134 "Trace all classes loaded in order referenced (not loaded)") \
duke@0 2135 \
duke@0 2136 product_rw(bool, TraceClassUnloading, false, \
duke@0 2137 "Trace unloading of classes") \
duke@0 2138 \
duke@0 2139 product_rw(bool, TraceLoaderConstraints, false, \
duke@0 2140 "Trace loader constraints") \
duke@0 2141 \
duke@0 2142 product(bool, TraceGen0Time, false, \
duke@0 2143 "Trace accumulated time for Gen 0 collection") \
duke@0 2144 \
duke@0 2145 product(bool, TraceGen1Time, false, \
duke@0 2146 "Trace accumulated time for Gen 1 collection") \
duke@0 2147 \
duke@0 2148 product(bool, PrintTenuringDistribution, false, \
duke@0 2149 "Print tenuring age information") \
duke@0 2150 \
duke@0 2151 product_rw(bool, PrintHeapAtGC, false, \
duke@0 2152 "Print heap layout before and after each GC") \
duke@0 2153 \
tonyp@838 2154 product_rw(bool, PrintHeapAtGCExtended, false, \
tonyp@838 2155 "Prints extended information about the layout of the heap " \
tonyp@838 2156 "when -XX:+PrintHeapAtGC is set") \
tonyp@838 2157 \
duke@0 2158 product(bool, PrintHeapAtSIGBREAK, true, \
duke@0 2159 "Print heap layout in response to SIGBREAK") \
duke@0 2160 \
ysr@615 2161 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
ysr@615 2162 "Print a class histogram before any major stop-world GC") \
ysr@615 2163 \
ysr@615 2164 manageable(bool, PrintClassHistogramAfterFullGC, false, \
ysr@615 2165 "Print a class histogram after any major stop-world GC") \
ysr@615 2166 \
duke@0 2167 manageable(bool, PrintClassHistogram, false, \
duke@0 2168 "Print a histogram of class instances") \
duke@0 2169 \
duke@0 2170 develop(bool, TraceWorkGang, false, \
duke@0 2171 "Trace activities of work gangs") \
duke@0 2172 \
duke@0 2173 product(bool, TraceParallelOldGCTasks, false, \
duke@0 2174 "Trace multithreaded GC activity") \
duke@0 2175 \
duke@0 2176 develop(bool, TraceBlockOffsetTable, false, \
duke@0 2177 "Print BlockOffsetTable maps") \
duke@0 2178 \
duke@0 2179 develop(bool, TraceCardTableModRefBS, false, \
duke@0 2180 "Print CardTableModRefBS maps") \
duke@0 2181 \
duke@0 2182 develop(bool, TraceGCTaskManager, false, \
duke@0 2183 "Trace actions of the GC task manager") \
duke@0 2184 \
duke@0 2185 develop(bool, TraceGCTaskQueue, false, \
duke@0 2186 "Trace actions of the GC task queues") \
duke@0 2187 \
duke@0 2188 develop(bool, TraceGCTaskThread, false, \
duke@0 2189 "Trace actions of the GC task threads") \
duke@0 2190 \
duke@0 2191 product(bool, PrintParallelOldGCPhaseTimes, false, \
duke@0 2192 "Print the time taken by each parallel old gc phase." \
duke@0 2193 "PrintGCDetails must also be enabled.") \
duke@0 2194 \
duke@0 2195 develop(bool, TraceParallelOldGCMarkingPhase, false, \
duke@0 2196 "Trace parallel old gc marking phase") \
duke@0 2197 \
duke@0 2198 develop(bool, TraceParallelOldGCSummaryPhase, false, \
duke@0 2199 "Trace parallel old gc summary phase") \
duke@0 2200 \
duke@0 2201 develop(bool, TraceParallelOldGCCompactionPhase, false, \
duke@0 2202 "Trace parallel old gc compaction phase") \
duke@0 2203 \
duke@0 2204 develop(bool, TraceParallelOldGCDensePrefix, false, \
duke@0 2205 "Trace parallel old gc dense prefix computation") \
duke@0 2206 \
duke@0 2207 develop(bool, IgnoreLibthreadGPFault, false, \
duke@0 2208 "Suppress workaround for libthread GP fault") \
duke@0 2209 \
apetrusenko@139 2210 product(bool, PrintJNIGCStalls, false, \
apetrusenko@139 2211 "Print diagnostic message when GC is stalled" \
apetrusenko@139 2212 "by JNI critical section") \
apetrusenko@139 2213 \
duke@0 2214 /* JVMTI heap profiling */ \
duke@0 2215 \
duke@0 2216 diagnostic(bool, TraceJVMTIObjectTagging, false, \
duke@0 2217 "Trace JVMTI object tagging calls") \
duke@0 2218 \
duke@0 2219 diagnostic(bool, VerifyBeforeIteration, false, \
duke@0 2220 "Verify memory system before JVMTI iteration") \
duke@0 2221 \
duke@0 2222 /* compiler interface */ \
duke@0 2223 \
duke@0 2224 develop(bool, CIPrintCompilerName, false, \
duke@0 2225 "when CIPrint is active, print the name of the active compiler") \
duke@0 2226 \
duke@0 2227 develop(bool, CIPrintCompileQueue, false, \
duke@0 2228 "display the contents of the compile queue whenever a " \
duke@0 2229 "compilation is enqueued") \
duke@0 2230 \
duke@0 2231 develop(bool, CIPrintRequests, false, \
duke@0 2232 "display every request for compilation") \
duke@0 2233 \
duke@0 2234 product(bool, CITime, false, \
duke@0 2235 "collect timing information for compilation") \
duke@0 2236 \
duke@0 2237 develop(bool, CITimeEach, false, \
duke@0 2238 "display timing information after each successful compilation") \
duke@0 2239 \
duke@0 2240 develop(bool, CICountOSR, true, \
duke@0 2241 "use a separate counter when assigning ids to osr compilations") \
duke@0 2242 \
duke@0 2243 develop(bool, CICompileNatives, true, \
duke@0 2244 "compile native methods if supported by the compiler") \
duke@0 2245 \
duke@0 2246 develop_pd(bool, CICompileOSR, \
duke@0 2247 "compile on stack replacement methods if supported by the " \
duke@0 2248 "compiler") \
duke@0 2249 \
duke@0 2250 develop(bool, CIPrintMethodCodes, false, \
duke@0 2251 "print method bytecodes of the compiled code") \
duke@0 2252 \
duke@0 2253 develop(bool, CIPrintTypeFlow, false, \
duke@0 2254 "print the results of ciTypeFlow analysis") \
duke@0 2255 \
duke@0 2256 develop(bool, CITraceTypeFlow, false, \
duke@0 2257 "detailed per-bytecode tracing of ciTypeFlow analysis") \
duke@0 2258 \
duke@0 2259 develop(intx, CICloneLoopTestLimit, 100, \
duke@0 2260 "size limit for blocks heuristically cloned in ciTypeFlow") \
duke@0 2261 \
duke@0 2262 /* temp diagnostics */ \
duke@0 2263 \
duke@0 2264 diagnostic(bool, TraceRedundantCompiles, false, \
duke@0 2265 "Have compile broker print when a request already in the queue is"\
duke@0 2266 " requested again") \
duke@0 2267 \
duke@0 2268 diagnostic(bool, InitialCompileFast, false, \
duke@0 2269 "Initial compile at CompLevel_fast_compile") \
duke@0 2270 \
duke@0 2271 diagnostic(bool, InitialCompileReallyFast, false, \
duke@0 2272 "Initial compile at CompLevel_really_fast_compile (no profile)") \
duke@0 2273 \
duke@0 2274 diagnostic(bool, FullProfileOnReInterpret, true, \
duke@0 2275 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\
duke@0 2276 \
duke@0 2277 /* compiler */ \
duke@0 2278 \
duke@0 2279 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
duke@0 2280 "Number of compiler threads to run") \
duke@0 2281 \
duke@0 2282 product(intx, CompilationPolicyChoice, 0, \
duke@0 2283 "which compilation policy (0/1)") \
duke@0 2284 \
duke@0 2285 develop(bool, UseStackBanging, true, \
duke@0 2286 "use stack banging for stack overflow checks (required for " \
duke@0 2287 "proper StackOverflow handling; disable only to measure cost " \
duke@0 2288 "of stackbanging)") \
duke@0 2289 \
duke@0 2290 develop(bool, Use24BitFPMode, true, \
duke@0 2291 "Set 24-bit FPU mode on a per-compile basis ") \
duke@0 2292 \
duke@0 2293 develop(bool, Use24BitFP, true, \
duke@0 2294 "use FP instructions that produce 24-bit precise results") \
duke@0 2295 \
duke@0 2296 develop(bool, UseStrictFP, true, \
duke@0 2297 "use strict fp if modifier strictfp is set") \
duke@0 2298 \
duke@0 2299 develop(bool, GenerateSynchronizationCode, true, \
duke@0 2300 "generate locking/unlocking code for synchronized methods and " \
duke@0 2301 "monitors") \
duke@0 2302 \
duke@0 2303 develop(bool, GenerateCompilerNullChecks, true, \
duke@0 2304 "Generate explicit null checks for loads/stores/calls") \
duke@0 2305 \
duke@0 2306 develop(bool, GenerateRangeChecks, true, \
duke@0 2307 "Generate range checks for array accesses") \
duke@0 2308 \
duke@0 2309 develop_pd(bool, ImplicitNullChecks, \
duke@0 2310 "generate code for implicit null checks") \
duke@0 2311 \
duke@0 2312 product(bool, PrintSafepointStatistics, false, \
duke@0 2313 "print statistics about safepoint synchronization") \
duke@0 2314 \
duke@0 2315 product(intx, PrintSafepointStatisticsCount, 300, \
duke@0 2316 "total number of safepoint statistics collected " \
duke@0 2317 "before printing them out") \
duke@0 2318 \
duke@0 2319 product(intx, PrintSafepointStatisticsTimeout, -1, \
duke@0 2320 "print safepoint statistics only when safepoint takes" \
duke@0 2321 " more than PrintSafepointSatisticsTimeout in millis") \
duke@0 2322 \
xlu@1321 2323 product(bool, TraceSafepointCleanupTime, false, \
xlu@1321 2324 "print the break down of clean up tasks performed during" \
xlu@1321 2325 " safepoint") \
xlu@1321 2326 \
duke@0 2327 develop(bool, InlineAccessors, true, \
duke@0 2328 "inline accessor methods (get/set)") \
duke@0 2329 \
duke@0 2330 product(bool, Inline, true, \
duke@0 2331 "enable inlining") \
duke@0 2332 \
duke@0 2333 product(bool, ClipInlining, true, \
duke@0 2334 "clip inlining if aggregate method exceeds DesiredMethodLimit") \
duke@0 2335 \
duke@0 2336 develop(bool, UseCHA, true, \
duke@0 2337 "enable CHA") \
duke@0 2338 \
duke@0 2339 product(bool, UseTypeProfile, true, \
duke@0 2340 "Check interpreter profile for historically monomorphic calls") \
duke@0 2341 \
duke@0 2342 product(intx, TypeProfileMajorReceiverPercent, 90, \
duke@0 2343 "% of major receiver type to all profiled receivers") \
duke@0 2344 \
duke@0 2345 notproduct(bool, TimeCompiler, false, \
duke@0 2346 "time the compiler") \
duke@0 2347 \
duke@0 2348 notproduct(bool, TimeCompiler2, false, \
duke@0 2349 "detailed time the compiler (requires +TimeCompiler)") \
duke@0 2350 \
duke@0 2351 diagnostic(bool, PrintInlining, false, \
duke@0 2352 "prints inlining optimizations") \
duke@0 2353 \
duke@0 2354 diagnostic(bool, PrintIntrinsics, false, \
duke@0 2355 "prints attempted and successful inlining of intrinsics") \
duke@0 2356 \
twisti@775 2357 product(bool, UseCountLeadingZerosInstruction, false, \
twisti@775 2358 "Use count leading zeros instruction") \
twisti@775 2359 \
twisti@643 2360 product(bool, UsePopCountInstruction, false, \
twisti@643 2361 "Use population count instruction") \
twisti@643 2362 \
duke@0 2363 diagnostic(ccstrlist, DisableIntrinsic, "", \
duke@0 2364 "do not expand intrinsics whose (internal) names appear here") \
duke@0 2365 \
duke@0 2366 develop(bool, StressReflectiveCode, false, \
duke@0 2367 "Use inexact types at allocations, etc., to test reflection") \
duke@0 2368 \
duke@0 2369 develop(bool, EagerInitialization, false, \
duke@0 2370 "Eagerly initialize classes if possible") \
duke@0 2371 \
duke@0 2372 product(bool, Tier1UpdateMethodData, trueInTiered, \
duke@0 2373 "Update methodDataOops in Tier1-generated code") \
duke@0 2374 \
duke@0 2375 develop(bool, TraceMethodReplacement, false, \
duke@0 2376 "Print when methods are replaced do to recompilation") \
duke@0 2377 \
duke@0 2378 develop(bool, PrintMethodFlushing, false, \
duke@0 2379 "print the nmethods being flushed") \
duke@0 2380 \
duke@0 2381 notproduct(bool, LogMultipleMutexLocking, false, \
duke@0 2382 "log locking and unlocking of mutexes (only if multiple locks " \
duke@0 2383 "are held)") \
duke@0 2384 \
duke@0 2385 develop(bool, UseRelocIndex, false, \
duke@0 2386 "use an index to speed random access to relocations") \
duke@0 2387 \
duke@0 2388 develop(bool, StressCodeBuffers, false, \
duke@0 2389 "Exercise code buffer expansion and other rare state changes") \
duke@0 2390 \
duke@0 2391 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
duke@0 2392 "Generate extra debugging info for non-safepoints in nmethods") \
duke@0 2393 \
duke@0 2394 diagnostic(bool, DebugInlinedCalls, true, \
duke@0 2395 "If false, restricts profiled locations to the root method only") \
duke@0 2396 \
duke@0 2397 product(bool, PrintVMOptions, trueInDebug, \
kvn@1150 2398 "Print flags that appeared on the command line") \
duke@0 2399 \
kvn@564 2400 product(bool, IgnoreUnrecognizedVMOptions, false, \
kvn@564 2401 "Ignore unrecognized VM options") \
kvn@564 2402 \
kvn@1150 2403 product(bool, PrintCommandLineFlags, false, \
kvn@1150 2404 "Print flags specified on command line or set by ergonomics") \
kvn@1150 2405 \
kvn@1150 2406 product(bool, PrintFlagsInitial, false, \
kvn@1150 2407 "Print all VM flags before argument processing and exit VM") \
kvn@1150 2408 \
kvn@1150 2409 product(bool, PrintFlagsFinal, false, \
kvn@1150 2410 "Print all VM flags after argument and ergonomic processing") \
kvn@1150 2411 \
ikrylov@1692 2412 notproduct(bool, PrintFlagsWithComments, false, \
ikrylov@1692 2413 "Print all VM flags with default values and descriptions and exit")\
ikrylov@1692 2414 \
duke@0 2415 diagnostic(bool, SerializeVMOutput, true, \
duke@0 2416 "Use a mutex to serialize output to tty and hotspot.log") \
duke@0 2417 \
duke@0 2418 diagnostic(bool, DisplayVMOutput, true, \
duke@0 2419 "Display all VM output on the tty, independently of LogVMOutput") \
duke@0 2420 \
duke@0 2421 diagnostic(bool, LogVMOutput, trueInDebug, \
duke@0 2422 "Save VM output to hotspot.log, or to LogFile") \
duke@0 2423 \
duke@0 2424 diagnostic(ccstr, LogFile, NULL, \
duke@0 2425 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \
duke@0 2426 \
duke@0 2427 product(ccstr, ErrorFile, NULL, \
duke@0 2428 "If an error occurs, save the error data to this file " \
duke@0 2429 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
duke@0 2430 \
duke@0 2431 product(bool, DisplayVMOutputToStderr, false, \
duke@0 2432 "If DisplayVMOutput is true, display all VM output to stderr") \
duke@0 2433 \
duke@0 2434 product(bool, DisplayVMOutputToStdout, false, \
duke@0 2435 "If DisplayVMOutput is true, display all VM output to stdout") \
duke@0 2436 \
duke@0 2437 product(bool, UseHeavyMonitors, false, \
duke@0 2438 "use heavyweight instead of lightweight Java monitors") \
duke@0 2439 \
duke@0 2440 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
duke@0 2441 "print histogram of the symbol table") \
duke@0 2442 \
duke@0 2443 notproduct(bool, ExitVMOnVerifyError, false, \
duke@0 2444 "standard exit from VM if bytecode verify error " \
duke@0 2445 "(only in debug mode)") \
duke@0 2446 \
duke@0 2447 notproduct(ccstr, AbortVMOnException, NULL, \
duke@0 2448 "Call fatal if this exception is thrown. Example: " \
duke@0 2449 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
duke@0 2450 \
kvn@1608 2451 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \
kvn@1608 2452 "Call fatal if the exception pointed by AbortVMOnException " \
kvn@1608 2453 "has this message.") \
kvn@1608 2454 \
duke@0 2455 develop(bool, DebugVtables, false, \
duke@0 2456 "add debugging code to vtable dispatch") \
duke@0 2457 \
duke@0 2458 develop(bool, PrintVtables, false, \
duke@0 2459 "print vtables when printing klass") \
duke@0 2460 \
duke@0 2461 notproduct(bool, PrintVtableStats, false, \
duke@0 2462 "print vtables stats at end of run") \
duke@0 2463 \
duke@0 2464 develop(bool, TraceCreateZombies, false, \
duke@0 2465 "trace creation of zombie nmethods") \
duke@0 2466 \
duke@0 2467 notproduct(bool, IgnoreLockingAssertions, false, \
duke@0 2468 "disable locking assertions (for speed)") \
duke@0 2469 \
duke@0 2470 notproduct(bool, VerifyLoopOptimizations, false, \
duke@0 2471 "verify major loop optimizations") \
duke@0 2472 \
duke@0 2473 product(bool, RangeCheckElimination, true, \
duke@0 2474 "Split loop iterations to eliminate range checks") \
duke@0 2475 \
duke@0 2476 develop_pd(bool, UncommonNullCast, \
duke@0 2477 "track occurrences of null in casts; adjust compiler tactics") \
duke@0 2478 \
duke@0 2479 develop(bool, TypeProfileCasts, true, \
duke@0 2480 "treat casts like calls for purposes of type profiling") \
duke@0 2481 \
duke@0 2482 develop(bool, MonomorphicArrayCheck, true, \
duke@0 2483 "Uncommon-trap array store checks that require full type check") \
duke@0 2484 \
jrose@1670 2485 diagnostic(bool, ProfileDynamicTypes, true, \
jrose@1670 2486 "do extra type profiling and use it more aggressively") \
jrose@1670 2487 \
duke@0 2488 develop(bool, DelayCompilationDuringStartup, true, \
duke@0 2489 "Delay invoking the compiler until main application class is " \
duke@0 2490 "loaded") \
duke@0 2491 \
duke@0 2492 develop(bool, CompileTheWorld, false, \
duke@0 2493 "Compile all methods in all classes in bootstrap class path " \
duke@0 2494 "(stress test)") \
duke@0 2495 \
duke@0 2496 develop(bool, CompileTheWorldPreloadClasses, true, \
duke@0 2497 "Preload all classes used by a class before start loading") \
duke@0 2498 \
duke@0 2499 notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \
duke@0 2500 "Compile all methods although class initializer failed") \
duke@0 2501 \
kvn@1188 2502 notproduct(intx, CompileTheWorldSafepointInterval, 100, \
kvn@1188 2503 "Force a safepoint every n compiles so sweeper can keep up") \
kvn@1188 2504 \
duke@0 2505 develop(bool, TraceIterativeGVN, false, \
duke@0 2506 "Print progress during Iterative Global Value Numbering") \
duke@0 2507 \
duke@0 2508 develop(bool, FillDelaySlots, true, \
duke@0 2509 "Fill delay slots (on SPARC only)") \
duke@0 2510 \
duke@0 2511 develop(bool, VerifyIterativeGVN, false, \
duke@0 2512 "Verify Def-Use modifications during sparse Iterative Global " \
duke@0 2513 "Value Numbering") \
duke@0 2514 \
duke@0 2515 notproduct(bool, TracePhaseCCP, false, \
duke@0 2516 "Print progress during Conditional Constant Propagation") \
duke@0 2517 \
duke@0 2518 develop(bool, TimeLivenessAnalysis, false, \
duke@0 2519 "Time computation of bytecode liveness analysis") \
duke@0 2520 \
duke@0 2521 develop(bool, TraceLivenessGen, false, \
duke@0 2522 "Trace the generation of liveness analysis information") \
duke@0 2523 \
duke@0 2524 notproduct(bool, TraceLivenessQuery, false, \
duke@0 2525 "Trace queries of liveness analysis information") \
duke@0 2526 \
duke@0 2527 notproduct(bool, CollectIndexSetStatistics, false, \
duke@0 2528 "Collect information about IndexSets") \
duke@0 2529 \
duke@0 2530 develop(bool, PrintDominators, false, \
duke@0 2531 "Print out dominator trees for GVN") \
duke@0 2532 \
duke@0 2533 develop(bool, UseLoopSafepoints, true, \
duke@0 2534 "Generate Safepoint nodes in every loop") \
duke@0 2535 \
duke@0 2536 notproduct(bool, TraceCISCSpill, false, \
duke@0 2537 "Trace allocators use of cisc spillable instructions") \
duke@0 2538 \
duke@0 2539 notproduct(bool, TraceSpilling, false, \
duke@0 2540 "Trace spilling") \
duke@0 2541 \
duke@0 2542 product(bool, SplitIfBlocks, true, \
duke@0 2543 "Clone compares and control flow through merge points to fold " \
duke@0 2544 "some branches") \
duke@0 2545 \
duke@0 2546 develop(intx, FastAllocateSizeLimit, 128*K, \
duke@0 2547 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
duke@0 2548 "Inline allocations larger than this in doublewords must go slow")\
duke@0 2549 \
duke@0 2550 product(bool, AggressiveOpts, false, \
duke@0 2551 "Enable aggressive optimizations - see arguments.cpp") \
duke@0 2552 \
kvn@192 2553 product(bool, UseStringCache, false, \
kvn@192 2554 "Enable String cache capabilities on String.java") \
kvn@192 2555 \
duke@0 2556 /* statistics */ \
duke@0 2557 develop(bool, CountCompiledCalls, false, \
duke@0 2558 "counts method invocations") \
duke@0 2559 \
duke@0 2560 notproduct(bool, CountRuntimeCalls, false, \
duke@0 2561 "counts VM runtime calls") \
duke@0 2562 \
duke@0 2563 develop(bool, CountJNICalls, false, \
duke@0 2564 "counts jni method invocations") \
duke@0 2565 \
duke@0 2566 notproduct(bool, CountJVMCalls, false, \
duke@0 2567 "counts jvm method invocations") \
duke@0 2568 \
duke@0 2569 notproduct(bool, CountRemovableExceptions, false, \
duke@0 2570 "count exceptions that could be replaced by branches due to " \
duke@0 2571 "inlining") \
duke@0 2572 \
duke@0 2573 notproduct(bool, ICMissHistogram, false, \
duke@0 2574 "produce histogram of IC misses") \
duke@0 2575 \
duke@0 2576 notproduct(bool, PrintClassStatistics, false, \
duke@0 2577 "prints class statistics at end of run") \
duke@0 2578 \
duke@0 2579 notproduct(bool, PrintMethodStatistics, false, \
duke@0 2580 "prints method statistics at end of run") \
duke@0 2581 \
duke@0 2582 /* interpreter */ \
duke@0 2583 develop(bool, ClearInterpreterLocals, false, \
duke@0 2584 "Always clear local variables of interpreter activations upon " \
duke@0 2585 "entry") \
duke@0 2586 \
duke@0 2587 product_pd(bool, RewriteBytecodes, \
duke@0 2588 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
duke@0 2589 \
duke@0 2590 product_pd(bool, RewriteFrequentPairs, \
duke@0 2591 "Rewrite frequently used bytecode pairs into a single bytecode") \
duke@0 2592 \
jrose@100 2593 diagnostic(bool, PrintInterpreter, false, \
duke@0 2594 "Prints the generated interpreter code") \
duke@0 2595 \
duke@0 2596 product(bool, UseInterpreter, true, \
duke@0 2597 "Use interpreter for non-compiled methods") \
duke@0 2598 \
duke@0 2599 develop(bool, UseFastSignatureHandlers, true, \
duke@0 2600 "Use fast signature handlers for native calls") \
duke@0 2601 \
duke@0 2602 develop(bool, UseV8InstrsOnly, false, \
duke@0 2603 "Use SPARC-V8 Compliant instruction subset") \
duke@0 2604 \
duke@0 2605 product(bool, UseNiagaraInstrs, false, \
duke@0 2606 "Use Niagara-efficient instruction subset") \
duke@0 2607 \
duke@0 2608 develop(bool, UseCASForSwap, false, \
duke@0 2609 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\
duke@0 2610 \
duke@0 2611 product(bool, UseLoopCounter, true, \
duke@0 2612 "Increment invocation counter on backward branch") \
duke@0 2613 \
duke@0 2614 product(bool, UseFastEmptyMethods, true, \
duke@0 2615 "Use fast method entry code for empty methods") \
duke@0 2616 \
duke@0 2617 product(bool, UseFastAccessorMethods, true, \
duke@0 2618 "Use fast method entry code for accessor methods") \
duke@0 2619 \
duke@0 2620 product_pd(bool, UseOnStackReplacement, \
duke@0 2621 "Use on stack replacement, calls runtime if invoc. counter " \
duke@0 2622 "overflows in loop") \
duke@0 2623 \
duke@0 2624 notproduct(bool, TraceOnStackReplacement, false, \
duke@0 2625 "Trace on stack replacement") \
duke@0 2626 \
duke@0 2627 develop(bool, PoisonOSREntry, true, \
duke@0 2628 "Detect abnormal calls to OSR code") \
duke@0 2629 \
duke@0 2630 product_pd(bool, PreferInterpreterNativeStubs, \
duke@0 2631 "Use always interpreter stubs for native methods invoked via " \
duke@0 2632 "interpreter") \
duke@0 2633 \
duke@0 2634 develop(bool, CountBytecodes, false, \
duke@0 2635 "Count number of bytecodes executed") \
duke@0 2636 \
duke@0 2637 develop(bool, PrintBytecodeHistogram, false, \
duke@0 2638 "Print histogram of the executed bytecodes") \
duke@0 2639 \
duke@0 2640 develop(bool, PrintBytecodePairHistogram, false, \
duke@0 2641 "Print histogram of the executed bytecode pairs") \
duke@0 2642 \
jrose@100 2643 diagnostic(bool, PrintSignatureHandlers, false, \
duke@0 2644 "Print code generated for native method signature handlers") \
duke@0 2645 \
duke@0 2646 develop(bool, VerifyOops, false, \
duke@0 2647 "Do plausibility checks for oops") \
duke@0 2648 \
duke@0 2649 develop(bool, CheckUnhandledOops, false, \
duke@0 2650 "Check for unhandled oops in VM code") \
duke@0 2651 \
duke@0 2652 develop(bool, VerifyJNIFields, trueInDebug, \
duke@0 2653 "Verify jfieldIDs for instance fields") \
duke@0 2654 \
duke@0 2655 notproduct(bool, VerifyJNIEnvThread, false, \
duke@0 2656 "Verify JNIEnv.thread == Thread::current() when entering VM " \
duke@0 2657 "from JNI") \
duke@0 2658 \
duke@0 2659 develop(bool, VerifyFPU, false, \
duke@0 2660 "Verify FPU state (check for NaN's, etc.)") \
duke@0 2661 \
duke@0 2662 develop(bool, VerifyThread, false, \
duke@0 2663 "Watch the thread register for corruption (SPARC only)") \
duke@0 2664 \
duke@0 2665 develop(bool, VerifyActivationFrameSize, false, \
duke@0 2666 "Verify that activation frame didn't become smaller than its " \
duke@0 2667 "minimal size") \
duke@0 2668 \
duke@0 2669 develop(bool, TraceFrequencyInlining, false, \
duke@0 2670 "Trace frequency based inlining") \
duke@0 2671 \
duke@0 2672 notproduct(bool, TraceTypeProfile, false, \
duke@0 2673 "Trace type profile") \
duke@0 2674 \
duke@0 2675 develop_pd(bool, InlineIntrinsics, \
duke@0 2676 "Inline intrinsics that can be statically resolved") \
duke@0 2677 \
duke@0 2678 product_pd(bool, ProfileInterpreter, \
duke@0 2679 "Profile at the bytecode level during interpretation") \
duke@0 2680 \
duke@0 2681 develop_pd(bool, ProfileTraps, \
duke@0 2682 "Profile deoptimization traps at the bytecode level") \
duke@0 2683 \
duke@0 2684 product(intx, ProfileMaturityPercentage, 20, \
duke@0 2685 "number of method invocations/branches (expressed as % of " \
duke@0 2686 "CompileThreshold) before using the method's profile") \
duke@0 2687 \
duke@0 2688 develop(bool, PrintMethodData, false, \
duke@0 2689 "Print the results of +ProfileInterpreter at end of run") \
duke@0 2690 \
duke@0 2691 develop(bool, VerifyDataPointer, trueInDebug, \
duke@0 2692 "Verify the method data pointer during interpreter profiling") \
duke@0 2693 \
duke@0 2694 develop(bool, VerifyCompiledCode, false, \
duke@0 2695 "Include miscellaneous runtime verifications in nmethod code; " \
phh@1064 2696 "default off because it disturbs nmethod size heuristics") \
duke@0 2697 \
minqi@1119 2698 notproduct(bool, CrashGCForDumpingJavaThread, false, \
minqi@1119 2699 "Manually make GC thread crash then dump java stack trace; " \
minqi@1119 2700 "Test only") \
duke@0 2701 \
duke@0 2702 /* compilation */ \
duke@0 2703 product(bool, UseCompiler, true, \
duke@0 2704 "use compilation") \
duke@0 2705 \
duke@0 2706 develop(bool, TraceCompilationPolicy, false, \
duke@0 2707 "Trace compilation policy") \
duke@0 2708 \
duke@0 2709 develop(bool, TimeCompilationPolicy, false, \
duke@0 2710 "Time the compilation policy") \
duke@0 2711 \
duke@0 2712 product(bool, UseCounterDecay, true, \
duke@0 2713 "adjust recompilation counters") \
duke@0 2714 \
duke@0 2715 develop(intx, CounterHalfLifeTime, 30, \
duke@0 2716 "half-life time of invocation counters (in secs)") \
duke@0 2717 \
duke@0 2718 develop(intx, CounterDecayMinIntervalLength, 500, \
duke@0 2719 "Min. ms. between invocation of CounterDecay") \
duke@0 2720 \
duke@0 2721 product(bool, AlwaysCompileLoopMethods, false, \
duke@0 2722 "when using recompilation, never interpret methods " \
duke@0 2723 "containing loops") \
duke@0 2724 \
duke@0 2725 product(bool, DontCompileHugeMethods, true, \
duke@0 2726 "don't compile methods > HugeMethodLimit") \
duke@0 2727 \
duke@0 2728 /* Bytecode escape analysis estimation. */ \
duke@0 2729 product(bool, EstimateArgEscape, true, \
duke@0 2730 "Analyze bytecodes to estimate escape state of arguments") \
duke@0 2731 \
duke@0 2732 product(intx, BCEATraceLevel, 0, \
duke@0 2733 "How much tracing to do of bytecode escape analysis estimates") \
duke@0 2734 \
duke@0 2735 product(intx, MaxBCEAEstimateLevel, 5, \
duke@0 2736 "Maximum number of nested calls that are analyzed by BC EA.") \
duke@0 2737 \
duke@0 2738 product(intx, MaxBCEAEstimateSize, 150, \
duke@0 2739 "Maximum bytecode size of a method to be analyzed by BC EA.") \
duke@0 2740 \
duke@0 2741 product(intx, AllocatePrefetchStyle, 1, \
duke@0 2742 "0 = no prefetch, " \
duke@0 2743 "1 = prefetch instructions for each allocation, " \
kvn@1367 2744 "2 = use TLAB watermark to gate allocation prefetch, " \
kvn@1367 2745 "3 = use BIS instruction on Sparc for allocation prefetch") \
duke@0 2746 \
duke@0 2747 product(intx, AllocatePrefetchDistance, -1, \
duke@0 2748 "Distance to prefetch ahead of allocation pointer") \
duke@0 2749 \
duke@0 2750 product(intx, AllocatePrefetchLines, 1, \
duke@0 2751 "Number of lines to prefetch ahead of allocation pointer") \
duke@0 2752 \
duke@0 2753 product(intx, AllocatePrefetchStepSize, 16, \
duke@0 2754 "Step size in bytes of sequential prefetch instructions") \
duke@0 2755 \
duke@0 2756 product(intx, AllocatePrefetchInstr, 0, \
duke@0 2757 "Prefetch instruction to prefetch ahead of allocation pointer") \
duke@0 2758 \
duke@0 2759 product(intx, ReadPrefetchInstr, 0, \
duke@0 2760 "Prefetch instruction to prefetch ahead") \
duke@0 2761 \
duke@0 2762 /* deoptimization */ \
duke@0 2763 develop(bool, TraceDeoptimization, false, \
duke@0 2764 "Trace deoptimization") \
duke@0 2765 \
duke@0 2766 develop(bool, DebugDeoptimization, false, \
duke@0 2767 "Tracing various information while debugging deoptimization") \
duke@0 2768 \
duke@0 2769 product(intx, SelfDestructTimer, 0, \
duke@0 2770 "Will cause VM to terminate after a given time (in minutes) " \
duke@0 2771 "(0 means off)") \
duke@0 2772 \
duke@0 2773 product(intx, MaxJavaStackTraceDepth, 1024, \
duke@0 2774 "Max. no. of lines in the stack trace for Java exceptions " \
duke@0 2775 "(0 means all)") \
duke@0 2776 \
duke@0 2777 develop(intx, GuaranteedSafepointInterval, 1000, \
duke@0 2778 "Guarantee a safepoint (at least) every so many milliseconds " \
duke@0 2779 "(0 means none)") \
duke@0 2780 \
duke@0 2781 product(intx, SafepointTimeoutDelay, 10000, \
duke@0 2782 "Delay in milliseconds for option SafepointTimeout") \
duke@0 2783 \
duke@0 2784 product(intx, NmethodSweepFraction, 4, \
duke@0 2785 "Number of invocations of sweeper to cover all nmethods") \
duke@0 2786 \
never@1458 2787 product(intx, NmethodSweepCheckInterval, 5, \
never@1458 2788 "Compilers wake up every n seconds to possibly sweep nmethods") \
never@1458 2789 \
duke@0 2790 notproduct(intx, MemProfilingInterval, 500, \
duke@0 2791 "Time between each invocation of the MemProfiler") \
duke@0 2792 \
duke@0 2793 develop(intx, MallocCatchPtr, -1, \
duke@0 2794 "Hit breakpoint when mallocing/freeing this pointer") \
duke@0 2795 \
duke@0 2796 notproduct(intx, AssertRepeat, 1, \
duke@0 2797 "number of times to evaluate expression in assert " \
duke@0 2798 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
duke@0 2799 \
duke@0 2800 notproduct(ccstrlist, SuppressErrorAt, "", \
duke@0 2801 "List of assertions (file:line) to muzzle") \
duke@0 2802 \
duke@0 2803 notproduct(uintx, HandleAllocationLimit, 1024, \
duke@0 2804 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
duke@0 2805 "is used") \
duke@0 2806 \
duke@0 2807 develop(uintx, TotalHandleAllocationLimit, 1024, \
duke@0 2808 "Threshold for total handle allocation when " \
duke@0 2809 "+TraceHandleAllocation is used") \
duke@0 2810 \
duke@0 2811 develop(intx, StackPrintLimit, 100, \
duke@0 2812 "number of stack frames to print in VM-level stack dump") \
duke@0 2813 \
duke@0 2814 notproduct(intx, MaxElementPrintSize, 256, \
duke@0 2815 "maximum number of elements to print") \
duke@0 2816 \
duke@0 2817 notproduct(intx, MaxSubklassPrintSize, 4, \
duke@0 2818 "maximum number of subklasses to print when printing klass") \
duke@0 2819 \
jrose@1157 2820 product(intx, MaxInlineLevel, 9, \
duke@0 2821 "maximum number of nested calls that are inlined") \
duke@0 2822 \
jrose@1157 2823 product(intx, MaxRecursiveInlineLevel, 1, \
duke@0 2824 "maximum number of nested recursive calls that are inlined") \
duke@0 2825 \
kvn@675 2826 product_pd(intx, InlineSmallCode, \
duke@0 2827 "Only inline already compiled methods if their code size is " \
duke@0 2828 "less than this") \
duke@0 2829 \
duke@0 2830 product(intx, MaxInlineSize, 35, \
duke@0 2831 "maximum bytecode size of a method to be inlined") \
duke@0 2832 \
duke@0 2833 product_pd(intx, FreqInlineSize, \
duke@0 2834 "maximum bytecode size of a frequent method to be inlined") \
duke@0 2835 \
jrose@1157 2836 product(intx, MaxTrivialSize, 6, \
duke@0 2837 "maximum bytecode size of a trivial method to be inlined") \
duke@0 2838 \
jrose@1157 2839 product(intx, MinInliningThreshold, 250, \
duke@0 2840 "min. invocation count a method needs to have to be inlined") \
duke@0 2841 \
duke@0 2842 develop(intx, AlignEntryCode, 4, \
duke@0 2843 "aligns entry code to specified value (in bytes)") \
duke@0 2844 \
duke@0 2845 develop(intx, MethodHistogramCutoff, 100, \
duke@0 2846 "cutoff value for method invoc. histogram (+CountCalls)") \
duke@0 2847 \
duke@0 2848 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
duke@0 2849 "# of interpreted methods to show in profile") \
duke@0 2850 \
duke@0 2851 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
duke@0 2852 "# of compiled methods to show in profile") \
duke@0 2853 \
duke@0 2854 develop(intx, ProfilerNumberOfStubMethods, 25, \
duke@0 2855 "# of stub methods to show in profile") \
duke@0 2856 \
duke@0 2857 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
duke@0 2858 "# of runtime stub nodes to show in profile") \
duke@0 2859 \
duke@0 2860 product(intx, ProfileIntervalsTicks, 100, \
duke@0 2861 "# of ticks between printing of interval profile " \
duke@0 2862 "(+ProfileIntervals)") \
duke@0 2863 \
duke@0 2864 notproduct(intx, ScavengeALotInterval, 1, \
duke@0 2865 "Interval between which scavenge will occur with +ScavengeALot") \
duke@0 2866 \
duke@0 2867 notproduct(intx, FullGCALotInterval, 1, \
duke@0 2868 "Interval between which full gc will occur with +FullGCALot") \
duke@0 2869 \
duke@0 2870 notproduct(intx, FullGCALotStart, 0, \
duke@0 2871 "For which invocation to start FullGCAlot") \
duke@0 2872 \
duke@0 2873 notproduct(intx, FullGCALotDummies, 32*K, \
duke@0 2874 "Dummy object allocated with +FullGCALot, forcing all objects " \
duke@0 2875 "to move") \
duke@0 2876 \
duke@0 2877 develop(intx, DontYieldALotInterval, 10, \
duke@0 2878 "Interval between which yields will be dropped (milliseconds)") \
duke@0 2879 \
duke@0 2880 develop(intx, MinSleepInterval, 1, \
duke@0 2881 "Minimum sleep() interval (milliseconds) when " \
duke@0 2882 "ConvertSleepToYield is off (used for SOLARIS)") \
duke@0 2883 \
duke@0 2884 product(intx, EventLogLength, 2000, \
duke@0 2885 "maximum nof events in event log") \
duke@0 2886 \
duke@0 2887 develop(intx, ProfilerPCTickThreshold, 15, \
duke@0 2888 "Number of ticks in a PC buckets to be a hotspot") \
duke@0 2889 \
duke@0 2890 notproduct(intx, DeoptimizeALotInterval, 5, \
duke@0 2891 "Number of exits until DeoptimizeALot kicks in") \
duke@0 2892 \
duke@0 2893 notproduct(intx, ZombieALotInterval, 5, \
duke@0 2894 "Number of exits until ZombieALot kicks in") \
duke@0 2895 \
duke@0 2896 develop(bool, StressNonEntrant, false, \
duke@0 2897 "Mark nmethods non-entrant at registration") \
duke@0 2898 \
duke@0 2899 diagnostic(intx, MallocVerifyInterval, 0, \
duke@0 2900 "if non-zero, verify C heap after every N calls to " \
duke@0 2901 "malloc/realloc/free") \
duke@0 2902 \
duke@0 2903 diagnostic(intx, MallocVerifyStart, 0, \
duke@0 2904 "if non-zero, start verifying C heap after Nth call to " \
duke@0 2905 "malloc/realloc/free") \
duke@0 2906 \
duke@0 2907 product(intx, TypeProfileWidth, 2, \
duke@0 2908 "number of receiver types to record in call/cast profile") \
duke@0 2909 \
duke@0 2910 develop(intx, BciProfileWidth, 2, \
duke@0 2911 "number of return bci's to record in ret profile") \
duke@0 2912 \
duke@0 2913 product(intx, PerMethodRecompilationCutoff, 400, \
duke@0 2914 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
duke@0 2915 \
kvn@1206 2916 product(intx, PerBytecodeRecompilationCutoff, 200, \
duke@0 2917 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
duke@0 2918 \
duke@0 2919 product(intx, PerMethodTrapLimit, 100, \
duke@0 2920 "Limit on traps (of one kind) in a method (includes inlines)") \
duke@0 2921 \
duke@0 2922 product(intx, PerBytecodeTrapLimit, 4, \
duke@0 2923 "Limit on traps (of one kind) at a particular BCI") \
duke@0 2924 \
duke@0 2925 develop(intx, FreqCountInvocations, 1, \
duke@0 2926 "Scaling factor for branch frequencies (deprecated)") \
duke@0 2927 \
duke@0 2928 develop(intx, InlineFrequencyRatio, 20, \
duke@0 2929 "Ratio of call site execution to caller method invocation") \
duke@0 2930 \
duke@0 2931 develop_pd(intx, InlineFrequencyCount, \
duke@0 2932 "Count of call site execution necessary to trigger frequent " \
duke@0 2933 "inlining") \
duke@0 2934 \
duke@0 2935 develop(intx, InlineThrowCount, 50, \
duke@0 2936 "Force inlining of interpreted methods that throw this often") \
duke@0 2937 \
duke@0 2938 develop(intx, InlineThrowMaxSize, 200, \
duke@0 2939 "Force inlining of throwing methods smaller than this") \
duke@0 2940 \
duke@0 2941 product(intx, AliasLevel, 3, \
duke@0 2942 "0 for no aliasing, 1 for oop/field/static/array split, " \
duke@0 2943 "2 for class split, 3 for unique instances") \
duke@0 2944 \
duke@0 2945 develop(bool, VerifyAliases, false, \
duke@0 2946 "perform extra checks on the results of alias analysis") \
duke@0 2947 \
duke@0 2948 develop(intx, ProfilerNodeSize, 1024, \
duke@0 2949 "Size in K to allocate for the Profile Nodes of each thread") \
duke@0 2950 \
duke@0 2951 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \
duke@0 2952 "Number of times to spin wait on a v8 atomic operation lock") \
duke@0 2953 \
duke@0 2954 product(intx, ReadSpinIterations, 100, \
duke@0 2955 "Number of read attempts before a yield (spin inner loop)") \
duke@0 2956 \
duke@0 2957 product_pd(intx, PreInflateSpin, \
duke@0 2958 "Number of times to spin wait before inflation") \
duke@0 2959 \
duke@0 2960 product(intx, PreBlockSpin, 10, \
duke@0 2961 "Number of times to spin in an inflated lock before going to " \
duke@0 2962 "an OS lock") \
duke@0 2963 \
duke@0 2964 /* gc parameters */ \
phh@1064 2965 product(uintx, InitialHeapSize, 0, \
phh@1064 2966 "Initial heap size (in bytes); zero means OldSize + NewSize") \
phh@1064 2967 \
phh@1064 2968 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \
phh@1064 2969 "Maximum heap size (in bytes)") \
phh@1064 2970 \
phh@1064 2971 product(uintx, OldSize, ScaleForWordSize(4*M), \
phh@1064 2972 "Initial tenured generation size (in bytes)") \
phh@1064 2973 \
phh@1287 2974 product(uintx, NewSize, ScaleForWordSize(1*M), \
phh@1064 2975 "Initial new generation size (in bytes)") \
duke@0 2976 \
duke@0 2977 product(uintx, MaxNewSize, max_uintx, \
phh@1064 2978 "Maximum new generation size (in bytes), max_uintx means set " \
phh@1064 2979 "ergonomically") \
duke@0 2980 \
duke@0 2981 product(uintx, PretenureSizeThreshold, 0, \
phh@1064 2982 "Maximum size in bytes of objects allocated in DefNew " \
phh@1064 2983 "generation; zero means no maximum") \
phh@1064 2984 \
phh@1064 2985 product(uintx, TLABSize, 0, \
phh@1064 2986 "Starting TLAB size (in bytes); zero means set ergonomically") \
duke@0 2987 \
duke@0 2988 product(uintx, MinTLABSize, 2*K, \
duke@0 2989 "Minimum allowed TLAB size (in bytes)") \
duke@0 2990 \
duke@0 2991 product(uintx, TLABAllocationWeight, 35, \
duke@0 2992 "Allocation averaging weight") \
duke@0 2993 \
duke@0 2994 product(uintx, TLABWasteTargetPercent, 1, \
duke@0 2995 "Percentage of Eden that can be wasted") \
duke@0 2996 \
duke@0 2997 product(uintx, TLABRefillWasteFraction, 64, \
duke@0 2998 "Max TLAB waste at a refill (internal fragmentation)") \
duke@0 2999 \
duke@0 3000 product(uintx, TLABWasteIncrement, 4, \
duke@0 3001 "Increment allowed waste at slow allocation") \
duke@0 3002 \
phh@1064 3003 product(intx, SurvivorRatio, 8, \
duke@0 3004 "Ratio of eden/survivor space size") \
duke@0 3005 \
phh@1064 3006 product(intx, NewRatio, 2, \
duke@0 3007 "Ratio of new/old generation sizes") \
duke@0 3008 \
duke@0 3009 product(uintx, MaxLiveObjectEvacuationRatio, 100, \
duke@0 3010 "Max percent of eden objects that will be live at scavenge") \
duke@0 3011 \
duke@0 3012 product_pd(uintx, NewSizeThreadIncrease, \
duke@0 3013 "Additional size added to desired new generation size per " \
duke@0 3014 "non-daemon thread (in bytes)") \
duke@0 3015 \
duke@0 3016 product_pd(uintx, PermSize, \
phh@1064 3017 "Initial size of permanent generation (in bytes)") \
duke@0 3018 \
duke@0 3019 product_pd(uintx, MaxPermSize, \
duke@0 3020 "Maximum size of permanent generation (in bytes)") \
duke@0 3021 \
duke@0 3022 product(uintx, MinHeapFreeRatio, 40, \
duke@0 3023 "Min percentage of heap free after GC to avoid expansion") \
duke@0 3024 \
duke@0 3025 product(uintx, MaxHeapFreeRatio, 70, \
duke@0 3026 "Max percentage of heap free after GC to avoid shrinking") \
duke@0 3027 \
duke@0 3028 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
duke@0 3029 "Number of milliseconds per MB of free space in the heap") \
duke@0 3030 \
duke@0 3031 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
duke@0 3032 "Min change in heap space due to GC (in bytes)") \
duke@0 3033 \
duke@0 3034 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \
duke@0 3035 "Min expansion of permanent heap (in bytes)") \
duke@0 3036 \
duke@0 3037 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \
duke@0 3038 "Max expansion of permanent heap without full GC (in bytes)") \
duke@0 3039 \
duke@0 3040 product(intx, QueuedAllocationWarningCount, 0, \
duke@0 3041 "Number of times an allocation that queues behind a GC " \
duke@0 3042 "will retry before printing a warning") \
duke@0 3043 \
duke@0 3044 diagnostic(uintx, VerifyGCStartAt, 0, \
duke@0 3045 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
duke@0 3046 \
duke@0 3047 diagnostic(intx, VerifyGCLevel, 0, \
duke@0 3048 "Generation level at which to start +VerifyBefore/AfterGC") \
duke@0 3049 \
duke@0 3050 develop(uintx, ExitAfterGCNum, 0, \
duke@0 3051 "If non-zero, exit after this GC.") \
duke@0 3052 \
duke@0 3053 product(intx, MaxTenuringThreshold, 15, \
duke@0 3054 "Maximum value for tenuring threshold") \
duke@0 3055 \
duke@0 3056 product(intx, InitialTenuringThreshold, 7, \
duke@0 3057 "Initial value for tenuring threshold") \
duke@0 3058 \
duke@0 3059 product(intx, TargetSurvivorRatio, 50, \
duke@0 3060 "Desired percentage of survivor space used after scavenge") \
duke@0 3061 \
jcoomes@438 3062 product(uintx, MarkSweepDeadRatio, 5, \
duke@0 3063 "Percentage (0-100) of the old gen allowed as dead wood." \
duke@0 3064 "Serial mark sweep treats this as both the min and max value." \
duke@0 3065 "CMS uses this value only if it falls back to mark sweep." \
duke@0 3066 "Par compact uses a variable scale based on the density of the" \
duke@0 3067 "generation and treats this as the max value when the heap is" \
duke@0 3068 "either completely full or completely empty. Par compact also" \
duke@0 3069 "has a smaller default value; see arguments.cpp.") \
duke@0 3070 \
jcoomes@438 3071 product(uintx, PermMarkSweepDeadRatio, 20, \
duke@0 3072 "Percentage (0-100) of the perm gen allowed as dead wood." \
duke@0 3073 "See MarkSweepDeadRatio for collector-specific comments.") \
duke@0 3074 \
duke@0 3075 product(intx, MarkSweepAlwaysCompactCount, 4, \
duke@0 3076 "How often should we fully compact the heap (ignoring the dead " \
duke@0 3077 "space parameters)") \
duke@0 3078 \
duke@0 3079 product(intx, PrintCMSStatistics, 0, \
duke@0 3080 "Statistics for CMS") \
duke@0 3081 \
duke@0 3082 product(bool, PrintCMSInitiationStatistics, false, \
duke@0 3083 "Statistics for initiating a CMS collection") \
duke@0 3084 \
duke@0 3085 product(intx, PrintFLSStatistics, 0, \
duke@0 3086 "Statistics for CMS' FreeListSpace") \
duke@0 3087 \
duke@0 3088 product(intx, PrintFLSCensus, 0, \
duke@0 3089 "Census for CMS' FreeListSpace") \
duke@0 3090 \
duke@0 3091 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
duke@0 3092 "Delay in ms between expansion and allocation") \
duke@0 3093 \
duke@0 3094 product(intx, DeferThrSuspendLoopCount, 4000, \
duke@0 3095 "(Unstable) Number of times to iterate in safepoint loop " \
duke@0 3096 " before blocking VM threads ") \
duke@0 3097 \
duke@0 3098 product(intx, DeferPollingPageLoopCount, -1, \
duke@0 3099 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
duke@0 3100 "before changing safepoint polling page to RO ") \
duke@0 3101 \
duke@0 3102 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
duke@0 3103 \
duke@0 3104 product(bool, PSChunkLargeArrays, true, \
duke@0 3105 "true: process large arrays in chunks") \
duke@0 3106 \
duke@0 3107 product(uintx, GCDrainStackTargetSize, 64, \
duke@0 3108 "how many entries we'll try to leave on the stack during " \
duke@0 3109 "parallel GC") \
duke@0 3110 \
duke@0 3111 /* stack parameters */ \
duke@0 3112 product_pd(intx, StackYellowPages, \
duke@0 3113 "Number of yellow zone (recoverable overflows) pages") \
duke@0 3114 \
duke@0 3115 product_pd(intx, StackRedPages, \
duke@0 3116 "Number of red zone (unrecoverable overflows) pages") \
duke@0 3117 \
duke@0 3118 product_pd(intx, StackShadowPages, \
duke@0 3119 "Number of shadow zone (for overflow checking) pages" \
duke@0 3120 " this should exceed the depth of the VM and native call stack") \
duke@0 3121 \
duke@0 3122 product_pd(intx, ThreadStackSize, \
duke@0 3123 "Thread Stack Size (in Kbytes)") \
duke@0 3124 \
duke@0 3125 product_pd(intx, VMThreadStackSize, \
duke@0 3126 "Non-Java Thread Stack Size (in Kbytes)") \
duke@0 3127 \
duke@0 3128 product_pd(intx, CompilerThreadStackSize, \
duke@0 3129 "Compiler Thread Stack Size (in Kbytes)") \
duke@0 3130 \
duke@0 3131 develop_pd(uintx, JVMInvokeMethodSlack, \
duke@0 3132 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
duke@0 3133 \
duke@0 3134 product(uintx, ThreadSafetyMargin, 50*M, \
duke@0 3135 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
duke@0 3136 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \