Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/globals.hpp @ 3255:5d046bf49ce7
Merge
| author | johnc |
|---|---|
| date | Thu, 14 Apr 2011 13:45:41 -0700 |
| parents | 6c97c830fb6f f177ddd59c60 |
| children | 286c498ae0d4 a1d5f532838d 277d0f6ca64d |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP |
| 26 #define SHARE_VM_RUNTIME_GLOBALS_HPP | |
| 27 | |
| 28 #include "utilities/debug.hpp" | |
| 29 #ifdef TARGET_ARCH_x86 | |
| 30 # include "globals_x86.hpp" | |
| 31 #endif | |
| 32 #ifdef TARGET_ARCH_sparc | |
| 33 # include "globals_sparc.hpp" | |
| 34 #endif | |
| 35 #ifdef TARGET_ARCH_zero | |
| 36 # include "globals_zero.hpp" | |
| 37 #endif | |
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38 #ifdef TARGET_ARCH_arm |
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39 # include "globals_arm.hpp" |
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40 #endif |
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41 #ifdef TARGET_ARCH_ppc |
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42 # include "globals_ppc.hpp" |
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43 #endif |
| 1972 | 44 #ifdef TARGET_OS_FAMILY_linux |
| 45 # include "globals_linux.hpp" | |
| 46 #endif | |
| 47 #ifdef TARGET_OS_FAMILY_solaris | |
| 48 # include "globals_solaris.hpp" | |
| 49 #endif | |
| 50 #ifdef TARGET_OS_FAMILY_windows | |
| 51 # include "globals_windows.hpp" | |
| 52 #endif | |
| 53 #ifdef TARGET_OS_ARCH_linux_x86 | |
| 54 # include "globals_linux_x86.hpp" | |
| 55 #endif | |
| 56 #ifdef TARGET_OS_ARCH_linux_sparc | |
| 57 # include "globals_linux_sparc.hpp" | |
| 58 #endif | |
| 59 #ifdef TARGET_OS_ARCH_linux_zero | |
| 60 # include "globals_linux_zero.hpp" | |
| 61 #endif | |
| 62 #ifdef TARGET_OS_ARCH_solaris_x86 | |
| 63 # include "globals_solaris_x86.hpp" | |
| 64 #endif | |
| 65 #ifdef TARGET_OS_ARCH_solaris_sparc | |
| 66 # include "globals_solaris_sparc.hpp" | |
| 67 #endif | |
| 68 #ifdef TARGET_OS_ARCH_windows_x86 | |
| 69 # include "globals_windows_x86.hpp" | |
| 70 #endif | |
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71 #ifdef TARGET_OS_ARCH_linux_arm |
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72 # include "globals_linux_arm.hpp" |
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73 #endif |
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74 #ifdef TARGET_OS_ARCH_linux_ppc |
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75 # include "globals_linux_ppc.hpp" |
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76 #endif |
| 1972 | 77 #ifdef COMPILER1 |
| 78 #ifdef TARGET_ARCH_x86 | |
| 79 # include "c1_globals_x86.hpp" | |
| 80 #endif | |
| 81 #ifdef TARGET_ARCH_sparc | |
| 82 # include "c1_globals_sparc.hpp" | |
| 83 #endif | |
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84 #ifdef TARGET_ARCH_arm |
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85 # include "c1_globals_arm.hpp" |
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86 #endif |
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87 #ifdef TARGET_ARCH_ppc |
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88 # include "c1_globals_ppc.hpp" |
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89 #endif |
| 1972 | 90 #ifdef TARGET_OS_FAMILY_linux |
| 91 # include "c1_globals_linux.hpp" | |
| 92 #endif | |
| 93 #ifdef TARGET_OS_FAMILY_solaris | |
| 94 # include "c1_globals_solaris.hpp" | |
| 95 #endif | |
| 96 #ifdef TARGET_OS_FAMILY_windows | |
| 97 # include "c1_globals_windows.hpp" | |
| 98 #endif | |
| 99 #endif | |
| 100 #ifdef COMPILER2 | |
| 101 #ifdef TARGET_ARCH_x86 | |
| 102 # include "c2_globals_x86.hpp" | |
| 103 #endif | |
| 104 #ifdef TARGET_ARCH_sparc | |
| 105 # include "c2_globals_sparc.hpp" | |
| 106 #endif | |
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107 #ifdef TARGET_ARCH_arm |
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108 # include "c2_globals_arm.hpp" |
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109 #endif |
| 1972 | 110 #ifdef TARGET_OS_FAMILY_linux |
| 111 # include "c2_globals_linux.hpp" | |
| 112 #endif | |
| 113 #ifdef TARGET_OS_FAMILY_solaris | |
| 114 # include "c2_globals_solaris.hpp" | |
| 115 #endif | |
| 116 #ifdef TARGET_OS_FAMILY_windows | |
| 117 # include "c2_globals_windows.hpp" | |
| 118 #endif | |
| 119 #endif | |
| 120 #ifdef SHARK | |
| 121 #ifdef TARGET_ARCH_zero | |
| 122 # include "shark_globals_zero.hpp" | |
| 123 #endif | |
| 124 #endif | |
| 125 | |
| 1692 | 126 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) |
| 0 | 127 define_pd_global(bool, BackgroundCompilation, false); |
| 128 define_pd_global(bool, UseTLAB, false); | |
| 129 define_pd_global(bool, CICompileOSR, false); | |
| 130 define_pd_global(bool, UseTypeProfile, false); | |
| 131 define_pd_global(bool, UseOnStackReplacement, false); | |
| 132 define_pd_global(bool, InlineIntrinsics, false); | |
| 133 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
| 134 define_pd_global(bool, ProfileInterpreter, false); | |
| 135 define_pd_global(bool, ProfileTraps, false); | |
| 136 define_pd_global(bool, TieredCompilation, false); | |
| 137 | |
| 138 define_pd_global(intx, CompileThreshold, 0); | |
| 139 define_pd_global(intx, BackEdgeThreshold, 0); | |
| 140 | |
| 141 define_pd_global(intx, OnStackReplacePercentage, 0); | |
| 142 define_pd_global(bool, ResizeTLAB, false); | |
| 143 define_pd_global(intx, FreqInlineSize, 0); | |
| 1064 | 144 define_pd_global(intx, InlineSmallCode, 0); |
| 0 | 145 define_pd_global(intx, NewSizeThreadIncrease, 4*K); |
| 146 define_pd_global(intx, InlineClassNatives, true); | |
| 147 define_pd_global(intx, InlineUnsafeOps, true); | |
| 148 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
| 149 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
| 150 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
| 151 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
| 152 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); | |
| 153 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); | |
| 154 define_pd_global(bool, NeverActAsServerClassMachine, true); | |
| 1064 | 155 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
| 0 | 156 #define CI_COMPILER_COUNT 0 |
| 157 #else | |
| 158 | |
| 159 #ifdef COMPILER2 | |
| 160 #define CI_COMPILER_COUNT 2 | |
| 161 #else | |
| 162 #define CI_COMPILER_COUNT 1 | |
| 163 #endif // COMPILER2 | |
| 164 | |
| 165 #endif // no compilers | |
| 166 | |
| 167 | |
| 168 // string type aliases used only in this file | |
| 169 typedef const char* ccstr; | |
| 170 typedef const char* ccstrlist; // represents string arguments which accumulate | |
| 171 | |
| 172 enum FlagValueOrigin { | |
| 173 DEFAULT = 0, | |
| 174 COMMAND_LINE = 1, | |
| 175 ENVIRON_VAR = 2, | |
| 176 CONFIG_FILE = 3, | |
| 177 MANAGEMENT = 4, | |
| 178 ERGONOMIC = 5, | |
| 179 ATTACH_ON_DEMAND = 6, | |
| 180 INTERNAL = 99 | |
| 181 }; | |
| 182 | |
| 183 struct Flag { | |
| 184 const char *type; | |
| 185 const char *name; | |
| 186 void* addr; | |
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187 |
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188 NOT_PRODUCT(const char *doc;) |
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189 |
| 0 | 190 const char *kind; |
| 191 FlagValueOrigin origin; | |
| 192 | |
| 193 // points to all Flags static array | |
| 194 static Flag *flags; | |
| 195 | |
| 196 // number of flags | |
| 197 static size_t numFlags; | |
| 198 | |
| 199 static Flag* find_flag(char* name, size_t length); | |
| 200 | |
| 201 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
| 202 bool get_bool() const { return *((bool*) addr); } | |
| 203 void set_bool(bool value) { *((bool*) addr) = value; } | |
| 204 | |
| 205 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
| 206 intx get_intx() const { return *((intx*) addr); } | |
| 207 void set_intx(intx value) { *((intx*) addr) = value; } | |
| 208 | |
| 209 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
| 210 uintx get_uintx() const { return *((uintx*) addr); } | |
| 211 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
| 212 | |
| 1064 | 213 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } |
| 214 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } | |
| 215 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } | |
| 216 | |
| 0 | 217 bool is_double() const { return strcmp(type, "double") == 0; } |
| 218 double get_double() const { return *((double*) addr); } | |
| 219 void set_double(double value) { *((double*) addr) = value; } | |
| 220 | |
| 221 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
| 222 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
| 223 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
| 224 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
| 225 | |
| 226 bool is_unlocker() const; | |
| 227 bool is_unlocked() const; | |
| 228 bool is_writeable() const; | |
| 229 bool is_external() const; | |
| 230 | |
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231 void print_on(outputStream* st, bool withComments = false ); |
| 0 | 232 void print_as_flag(outputStream* st); |
| 233 }; | |
| 234 | |
| 235 // debug flags control various aspects of the VM and are global accessible | |
| 236 | |
| 237 // use FlagSetting to temporarily change some debug flag | |
| 238 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
| 239 // restored to previous value upon leaving scope | |
| 240 class FlagSetting { | |
| 241 bool val; | |
| 242 bool* flag; | |
| 243 public: | |
| 244 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 245 ~FlagSetting() { *flag = val; } | |
| 246 }; | |
| 247 | |
| 248 | |
| 249 class CounterSetting { | |
| 250 intx* counter; | |
| 251 public: | |
| 252 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
| 253 ~CounterSetting() { (*counter)--; } | |
| 254 }; | |
| 255 | |
| 256 | |
| 257 class IntFlagSetting { | |
| 258 intx val; | |
| 259 intx* flag; | |
| 260 public: | |
| 261 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 262 ~IntFlagSetting() { *flag = val; } | |
| 263 }; | |
| 264 | |
| 265 | |
| 266 class DoubleFlagSetting { | |
| 267 double val; | |
| 268 double* flag; | |
| 269 public: | |
| 270 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 271 ~DoubleFlagSetting() { *flag = val; } | |
| 272 }; | |
| 273 | |
| 274 | |
| 275 class CommandLineFlags { | |
| 276 public: | |
| 277 static bool boolAt(char* name, size_t len, bool* value); | |
| 278 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
| 279 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
| 280 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
| 281 | |
| 282 static bool intxAt(char* name, size_t len, intx* value); | |
| 283 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
| 284 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
| 285 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
| 286 | |
| 287 static bool uintxAt(char* name, size_t len, uintx* value); | |
| 288 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
| 289 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
| 290 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
| 291 | |
| 1064 | 292 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
| 293 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
| 294 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); | |
| 295 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
| 296 | |
| 0 | 297 static bool doubleAt(char* name, size_t len, double* value); |
| 298 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
| 299 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
| 300 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
| 301 | |
| 302 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
| 303 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
| 304 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
| 305 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
| 306 | |
| 307 // Returns false if name is not a command line flag. | |
| 308 static bool wasSetOnCmdline(const char* name, bool* value); | |
| 309 static void printSetFlags(); | |
| 310 | |
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311 static void printFlags(bool withComments = false ); |
| 0 | 312 |
| 313 static void verify() PRODUCT_RETURN; | |
| 314 }; | |
| 315 | |
| 316 // use this for flags that are true by default in the debug version but | |
| 317 // false in the optimized version, and vice versa | |
| 318 #ifdef ASSERT | |
| 319 #define trueInDebug true | |
| 320 #define falseInDebug false | |
| 321 #else | |
| 322 #define trueInDebug false | |
| 323 #define falseInDebug true | |
| 324 #endif | |
| 325 | |
| 326 // use this for flags that are true per default in the product build | |
| 327 // but false in development builds, and vice versa | |
| 328 #ifdef PRODUCT | |
| 329 #define trueInProduct true | |
| 330 #define falseInProduct false | |
| 331 #else | |
| 332 #define trueInProduct false | |
| 333 #define falseInProduct true | |
| 334 #endif | |
| 335 | |
| 336 // use this for flags that are true per default in the tiered build | |
| 337 // but false in non-tiered builds, and vice versa | |
| 338 #ifdef TIERED | |
| 339 #define trueInTiered true | |
| 340 #define falseInTiered false | |
| 341 #else | |
| 342 #define trueInTiered false | |
| 343 #define falseInTiered true | |
| 344 #endif | |
| 345 | |
| 346 // develop flags are settable / visible only during development and are constant in the PRODUCT version | |
| 347 // product flags are always settable / visible | |
| 348 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
| 349 | |
| 350 // A flag must be declared with one of the following types: | |
| 351 // bool, intx, uintx, ccstr. | |
| 352 // The type "ccstr" is an alias for "const char*" and is used | |
| 353 // only in this file, because the macrology requires single-token type names. | |
| 354 | |
| 355 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
| 356 // They are to be used for VM quality assurance or field diagnosis | |
| 357 // of VM bugs. They are hidden so that users will not be encouraged to | |
| 358 // try them as if they were VM ordinary execution options. However, they | |
| 359 // are available in the product version of the VM. Under instruction | |
| 360 // from support engineers, VM customers can turn them on to collect | |
| 361 // diagnostic information about VM problems. To use a VM diagnostic | |
| 362 // option, you must first specify +UnlockDiagnosticVMOptions. | |
| 363 // (This master switch also affects the behavior of -Xprintflags.) | |
|
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364 // |
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365 // experimental flags are in support of features that are not |
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366 // part of the officially supported product, but are available |
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367 // for experimenting with. They could, for example, be performance |
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368 // features that may not have undergone full or rigorous QA, but which may |
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369 // help performance in some cases and released for experimentation |
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370 // by the community of users and developers. This flag also allows one to |
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371 // be able to build a fully supported product that nonetheless also |
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372 // ships with some unsupported, lightly tested, experimental features. |
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373 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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374 // UnlockExperimentalVMOptions flag, which allows the control and |
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375 // modification of the experimental flags. |
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376 // |
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377 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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378 // and they are not supported on production loads, except under explicit |
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379 // direction from support engineers. |
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380 // |
| 0 | 381 // manageable flags are writeable external product flags. |
| 382 // They are dynamically writeable through the JDK management interface | |
| 383 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
| 384 // These flags are external exported interface (see CCC). The list of | |
| 385 // manageable flags can be queried programmatically through the management | |
| 386 // interface. | |
| 387 // | |
| 388 // A flag can be made as "manageable" only if | |
| 389 // - the flag is defined in a CCC as an external exported interface. | |
| 390 // - the VM implementation supports dynamic setting of the flag. | |
| 391 // This implies that the VM must *always* query the flag variable | |
| 392 // and not reuse state related to the flag state at any given time. | |
| 393 // - you want the flag to be queried programmatically by the customers. | |
| 394 // | |
| 395 // product_rw flags are writeable internal product flags. | |
| 396 // They are like "manageable" flags but for internal/private use. | |
| 397 // The list of product_rw flags are internal/private flags which | |
| 398 // may be changed/removed in a future release. It can be set | |
| 399 // through the management interface to get/set value | |
| 400 // when the name of flag is supplied. | |
| 401 // | |
| 402 // A flag can be made as "product_rw" only if | |
| 403 // - the VM implementation supports dynamic setting of the flag. | |
| 404 // This implies that the VM must *always* query the flag variable | |
| 405 // and not reuse state related to the flag state at any given time. | |
| 406 // | |
| 407 // Note that when there is a need to support develop flags to be writeable, | |
| 408 // it can be done in the same way as product_rw. | |
| 409 | |
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410 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
|
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411 \ |
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412 lp64_product(bool, UseCompressedOops, false, \ |
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413 "Use 32-bit object references in 64-bit VM. " \ |
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414 "lp64_product means flag is always constant in 32 bit VM") \ |
| 0 | 415 \ |
|
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416 notproduct(bool, CheckCompressedOops, true, \ |
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417 "generate checks in encoding/decoding code in debug VM") \ |
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418 \ |
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419 product_pd(uintx, HeapBaseMinAddress, \ |
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420 "OS specific low limit for heap base address") \ |
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421 \ |
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422 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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423 "Print compressed oops base address and encoding mode") \ |
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424 \ |
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425 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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426 "Default object alignment in bytes, 8 is minimum") \ |
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427 \ |
| 0 | 428 /* UseMembar is theoretically a temp flag used for memory barrier \ |
| 429 * removal testing. It was supposed to be removed before FCS but has \ | |
| 430 * been re-added (see 6401008) */ \ | |
|
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431 product_pd(bool, UseMembar, \ |
| 0 | 432 "(Unstable) Issues membars on thread state transitions") \ |
| 433 \ | |
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434 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ |
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435 * that don't support it. This will be replaced by processor detection \ |
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436 * logic. \ |
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437 */ \ |
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438 product(bool, UsePPCLWSYNC, true, \ |
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439 "Use lwsync instruction if true, else use slower sync") \ |
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440 \ |
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441 /* Temporary: See 6948537 */ \ |
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442 experimental(bool, UseMemSetInBOT, true, \ |
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443 "(Unstable) uses memset in BOT updates in GC code") \ |
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444 \ |
| 0 | 445 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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446 "Enable normal processing of flags relating to field diagnostics")\ |
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447 \ |
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448 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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449 "Enable normal processing of flags relating to experimental features")\ |
| 0 | 450 \ |
| 451 product(bool, JavaMonitorsInStackTrace, true, \ | |
| 452 "Print info. about Java monitor locks when the stacks are dumped")\ | |
| 453 \ | |
| 454 product_pd(bool, UseLargePages, \ | |
| 455 "Use large page memory") \ | |
| 456 \ | |
|
389
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457 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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458 "Allocate large pages individually for better affinity") \ |
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459 \ |
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460 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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461 "Fail large pages individual allocation") \ |
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462 \ |
| 0 | 463 develop(bool, TracePageSizes, false, \ |
| 464 "Trace page size selection and usage.") \ | |
| 465 \ | |
| 466 product(bool, UseNUMA, false, \ | |
| 467 "Use NUMA if available") \ | |
| 468 \ | |
|
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469 product(bool, ForceNUMA, false, \ |
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470 "Force NUMA optimizations on single-node/UMA systems") \ |
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471 \ |
| 0 | 472 product(intx, NUMAChunkResizeWeight, 20, \ |
| 473 "Percentage (0-100) used to weight the current sample when " \ | |
| 474 "computing exponentially decaying average for " \ | |
| 475 "AdaptiveNUMAChunkSizing") \ | |
| 476 \ | |
| 477 product(intx, NUMASpaceResizeRate, 1*G, \ | |
| 478 "Do not reallocate more that this amount per collection") \ | |
| 479 \ | |
| 480 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
| 481 "Enable adaptive chunk sizing for NUMA") \ | |
| 482 \ | |
| 483 product(bool, NUMAStats, false, \ | |
| 484 "Print NUMA stats in detailed heap information") \ | |
| 485 \ | |
| 486 product(intx, NUMAPageScanRate, 256, \ | |
| 487 "Maximum number of pages to include in the page scan procedure") \ | |
| 488 \ | |
| 489 product_pd(bool, NeedsDeoptSuspend, \ | |
| 490 "True for register window machines (sparc/ia64)") \ | |
| 491 \ | |
| 492 product(intx, UseSSE, 99, \ | |
| 493 "Highest supported SSE instructions set on x86/x64") \ | |
| 494 \ | |
| 495 product(uintx, LargePageSizeInBytes, 0, \ | |
| 496 "Large page size (0 to let VM choose the page size") \ | |
| 497 \ | |
| 498 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
| 499 "Use large pages if max heap is at least this big") \ | |
| 500 \ | |
| 501 product(bool, ForceTimeHighResolution, false, \ | |
| 502 "Using high time resolution(For Win32 only)") \ | |
| 503 \ | |
| 504 develop(bool, TraceItables, false, \ | |
| 505 "Trace initialization and use of itables") \ | |
| 506 \ | |
| 507 develop(bool, TracePcPatching, false, \ | |
| 508 "Trace usage of frame::patch_pc") \ | |
| 509 \ | |
| 510 develop(bool, TraceJumps, false, \ | |
| 511 "Trace assembly jumps in thread ring buffer") \ | |
| 512 \ | |
| 513 develop(bool, TraceRelocator, false, \ | |
| 514 "Trace the bytecode relocator") \ | |
| 515 \ | |
| 516 develop(bool, TraceLongCompiles, false, \ | |
| 517 "Print out every time compilation is longer than " \ | |
| 518 "a given threashold") \ | |
| 519 \ | |
| 520 develop(bool, SafepointALot, false, \ | |
| 521 "Generates a lot of safepoints. Works with " \ | |
| 522 "GuaranteedSafepointInterval") \ | |
| 523 \ | |
| 524 product_pd(bool, BackgroundCompilation, \ | |
| 525 "A thread requesting compilation is not blocked during " \ | |
| 526 "compilation") \ | |
| 527 \ | |
| 528 product(bool, PrintVMQWaitTime, false, \ | |
| 529 "Prints out the waiting time in VM operation queue") \ | |
| 530 \ | |
| 531 develop(bool, BailoutToInterpreterForThrows, false, \ | |
| 532 "Compiled methods which throws/catches exceptions will be " \ | |
| 533 "deopt and intp.") \ | |
| 534 \ | |
| 535 develop(bool, NoYieldsInMicrolock, false, \ | |
| 536 "Disable yields in microlock") \ | |
| 537 \ | |
| 538 develop(bool, TraceOopMapGeneration, false, \ | |
| 539 "Shows oopmap generation") \ | |
| 540 \ | |
| 541 product(bool, MethodFlushing, true, \ | |
| 542 "Reclamation of zombie and not-entrant methods") \ | |
| 543 \ | |
| 544 develop(bool, VerifyStack, false, \ | |
| 545 "Verify stack of each thread when it is entering a runtime call") \ | |
| 546 \ | |
| 547 develop(bool, ForceUnreachable, false, \ | |
| 548 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ | |
| 549 \ | |
| 550 notproduct(bool, StressDerivedPointers, false, \ | |
| 551 "Force scavenge when a derived pointers is detected on stack " \ | |
| 552 "after rtm call") \ | |
| 553 \ | |
| 554 develop(bool, TraceDerivedPointers, false, \ | |
| 555 "Trace traversal of derived pointers on stack") \ | |
| 556 \ | |
| 557 notproduct(bool, TraceCodeBlobStacks, false, \ | |
| 558 "Trace stack-walk of codeblobs") \ | |
| 559 \ | |
| 560 product(bool, PrintJNIResolving, false, \ | |
| 561 "Used to implement -v:jni") \ | |
| 562 \ | |
| 563 notproduct(bool, PrintRewrites, false, \ | |
| 564 "Print methods that are being rewritten") \ | |
| 565 \ | |
| 566 product(bool, UseInlineCaches, true, \ | |
| 567 "Use Inline Caches for virtual calls ") \ | |
| 568 \ | |
| 569 develop(bool, InlineArrayCopy, true, \ | |
| 570 "inline arraycopy native that is known to be part of " \ | |
| 571 "base library DLL") \ | |
| 572 \ | |
| 573 develop(bool, InlineObjectHash, true, \ | |
| 574 "inline Object::hashCode() native that is known to be part " \ | |
| 575 "of base library DLL") \ | |
| 576 \ | |
| 577 develop(bool, InlineObjectCopy, true, \ | |
| 578 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ | |
| 579 \ | |
| 580 develop(bool, InlineNatives, true, \ | |
| 581 "inline natives that are known to be part of base library DLL") \ | |
| 582 \ | |
| 583 develop(bool, InlineMathNatives, true, \ | |
| 584 "inline SinD, CosD, etc.") \ | |
| 585 \ | |
| 586 develop(bool, InlineClassNatives, true, \ | |
| 587 "inline Class.isInstance, etc") \ | |
| 588 \ | |
| 589 develop(bool, InlineAtomicLong, true, \ | |
| 590 "inline sun.misc.AtomicLong") \ | |
| 591 \ | |
| 592 develop(bool, InlineThreadNatives, true, \ | |
| 593 "inline Thread.currentThread, etc") \ | |
| 594 \ | |
| 595 develop(bool, InlineReflectionGetCallerClass, true, \ | |
| 596 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ | |
| 597 "of base library DLL") \ | |
| 598 \ | |
| 599 develop(bool, InlineUnsafeOps, true, \ | |
| 600 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
| 601 \ | |
| 602 develop(bool, ConvertCmpD2CmpF, true, \ | |
| 603 "Convert cmpD to cmpF when one input is constant in float range") \ | |
| 604 \ | |
| 605 develop(bool, ConvertFloat2IntClipping, true, \ | |
| 606 "Convert float2int clipping idiom to integer clipping") \ | |
| 607 \ | |
| 608 develop(bool, SpecialStringCompareTo, true, \ | |
| 609 "special version of string compareTo") \ | |
| 610 \ | |
| 611 develop(bool, SpecialStringIndexOf, true, \ | |
| 612 "special version of string indexOf") \ | |
| 613 \ | |
| 681 | 614 develop(bool, SpecialStringEquals, true, \ |
| 615 "special version of string equals") \ | |
| 616 \ | |
| 617 develop(bool, SpecialArraysEquals, true, \ | |
|
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618 "special version of Arrays.equals(char[],char[])") \ |
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619 \ |
| 681 | 620 product(bool, UseSSE42Intrinsics, false, \ |
| 621 "SSE4.2 versions of intrinsics") \ | |
| 622 \ | |
| 0 | 623 develop(bool, TraceCallFixup, false, \ |
| 624 "traces all call fixups") \ | |
| 625 \ | |
| 626 develop(bool, DeoptimizeALot, false, \ | |
| 627 "deoptimize at every exit from the runtime system") \ | |
| 628 \ | |
| 434 | 629 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
| 0 | 630 "a comma separated list of bcis to deoptimize at") \ |
| 631 \ | |
| 632 product(bool, DeoptimizeRandom, false, \ | |
| 633 "deoptimize random frames on random exit from the runtime system")\ | |
| 634 \ | |
| 635 notproduct(bool, ZombieALot, false, \ | |
| 636 "creates zombies (non-entrant) at exit from the runt. system") \ | |
| 637 \ | |
|
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638 product(bool, UnlinkSymbolsALot, false, \ |
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639 "unlink unreferenced symbols from the symbol table at safepoints")\ |
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640 \ |
| 0 | 641 notproduct(bool, WalkStackALot, false, \ |
| 642 "trace stack (no print) at every exit from the runtime system") \ | |
| 643 \ | |
| 644 develop(bool, Debugging, false, \ | |
| 645 "set when executing debug methods in debug.ccp " \ | |
| 646 "(to prevent triggering assertions)") \ | |
| 647 \ | |
| 648 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
| 649 "Enable strict checks that safepoints cannot happen for threads " \ | |
| 650 "that used No_Safepoint_Verifier") \ | |
| 651 \ | |
| 652 notproduct(bool, VerifyLastFrame, false, \ | |
| 653 "Verify oops on last frame on entry to VM") \ | |
| 654 \ | |
| 655 develop(bool, TraceHandleAllocation, false, \ | |
| 656 "Prints out warnings when suspicious many handles are allocated") \ | |
| 657 \ | |
| 658 product(bool, UseCompilerSafepoints, true, \ | |
| 659 "Stop at safepoints in compiled code") \ | |
| 660 \ | |
| 661 product(bool, UseSplitVerifier, true, \ | |
| 662 "use split verifier with StackMapTable attributes") \ | |
| 663 \ | |
| 664 product(bool, FailOverToOldVerifier, true, \ | |
| 665 "fail over to old verifier when split verifier fails") \ | |
| 666 \ | |
| 667 develop(bool, ShowSafepointMsgs, false, \ | |
| 668 "Show msg. about safepoint synch.") \ | |
| 669 \ | |
| 670 product(bool, SafepointTimeout, false, \ | |
| 671 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
| 672 "milliseconds if failed to reach safepoint") \ | |
| 673 \ | |
| 674 develop(bool, DieOnSafepointTimeout, false, \ | |
| 675 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
| 676 \ | |
| 677 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
| 678 /* typically, at most a few retries are needed */ \ | |
| 679 product(intx, SuspendRetryCount, 50, \ | |
| 680 "Maximum retry count for an external suspend request") \ | |
| 681 \ | |
| 682 product(intx, SuspendRetryDelay, 5, \ | |
| 683 "Milliseconds to delay per retry (* current_retry_count)") \ | |
| 684 \ | |
| 685 product(bool, AssertOnSuspendWaitFailure, false, \ | |
| 686 "Assert/Guarantee on external suspend wait failure") \ | |
| 687 \ | |
| 688 product(bool, TraceSuspendWaitFailures, false, \ | |
| 689 "Trace external suspend wait failures") \ | |
| 690 \ | |
| 691 product(bool, MaxFDLimit, true, \ | |
| 692 "Bump the number of file descriptors to max in solaris.") \ | |
| 693 \ | |
| 694 notproduct(bool, LogEvents, trueInDebug, \ | |
| 695 "Enable Event log") \ | |
| 696 \ | |
| 697 product(bool, BytecodeVerificationRemote, true, \ | |
| 698 "Enables the Java bytecode verifier for remote classes") \ | |
| 699 \ | |
| 700 product(bool, BytecodeVerificationLocal, false, \ | |
| 701 "Enables the Java bytecode verifier for local classes") \ | |
| 702 \ | |
| 703 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
| 704 "Force exceptions on FP stack under/overflow") \ | |
| 705 \ | |
| 706 develop(bool, SoftMatchFailure, trueInProduct, \ | |
| 707 "If the DFA fails to match a node, print a message and bail out") \ | |
| 708 \ | |
| 709 develop(bool, VerifyStackAtCalls, false, \ | |
| 710 "Verify that the stack pointer is unchanged after calls") \ | |
| 711 \ | |
| 712 develop(bool, TraceJavaAssertions, false, \ | |
| 713 "Trace java language assertions") \ | |
| 714 \ | |
| 715 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
| 716 "temporary - see javaClasses.cpp") \ | |
| 717 \ | |
| 718 notproduct(bool, PrintMallocFree, false, \ | |
| 719 "Trace calls to C heap malloc/free allocation") \ | |
| 720 \ | |
|
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721 product(bool, PrintOopAddress, false, \ |
| 0 | 722 "Always print the location of the oop") \ |
| 723 \ | |
| 724 notproduct(bool, VerifyCodeCacheOften, false, \ | |
| 725 "Verify compiled-code cache often") \ | |
| 726 \ | |
| 727 develop(bool, ZapDeadCompiledLocals, false, \ | |
| 728 "Zap dead locals in compiler frames") \ | |
| 729 \ | |
| 730 notproduct(bool, ZapDeadLocalsOld, false, \ | |
| 731 "Zap dead locals (old version, zaps all frames when " \ | |
| 732 "entering the VM") \ | |
| 733 \ | |
| 734 notproduct(bool, CheckOopishValues, false, \ | |
| 735 "Warn if value contains oop ( requires ZapDeadLocals)") \ | |
| 736 \ | |
| 737 develop(bool, UseMallocOnly, false, \ | |
| 738 "use only malloc/free for allocation (no resource area/arena)") \ | |
| 739 \ | |
| 740 develop(bool, PrintMalloc, false, \ | |
| 741 "print all malloc/free calls") \ | |
| 742 \ | |
| 2250 | 743 develop(bool, PrintMallocStatistics, false, \ |
| 744 "print malloc/free statistics") \ | |
| 745 \ | |
| 0 | 746 develop(bool, ZapResourceArea, trueInDebug, \ |
| 747 "Zap freed resource/arena space with 0xABABABAB") \ | |
| 748 \ | |
| 749 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
| 750 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
| 751 \ | |
| 752 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
| 753 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
| 754 \ | |
|
1836
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755 notproduct(bool, ZapStackSegments, trueInDebug, \ |
|
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|
756 "Zap allocated/freed Stack segments with 0xFADFADED") \ |
|
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|
757 \ |
|
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|
758 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
| 0 | 759 "Zap unused heap space with 0xBAADBABE") \ |
| 760 \ | |
|
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761 develop(bool, TraceZapUnusedHeapArea, false, \ |
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|
762 "Trace zapping of unused heap space") \ |
|
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|
763 \ |
|
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|
764 develop(bool, CheckZapUnusedHeapArea, false, \ |
|
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|
765 "Check zapping of unused heap space") \ |
|
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|
766 \ |
|
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767 develop(bool, ZapFillerObjects, trueInDebug, \ |
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|
768 "Zap filler objects with 0xDEAFBABE") \ |
|
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|
769 \ |
| 0 | 770 develop(bool, PrintVMMessages, true, \ |
| 771 "Print vm messages on console") \ | |
| 772 \ | |
| 773 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
| 774 "Print the time the application has been running") \ | |
| 775 \ | |
| 776 product(bool, PrintGCApplicationStoppedTime, false, \ | |
| 777 "Print the time the application has been stopped") \ | |
| 778 \ | |
|
1490
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|
779 notproduct(uintx, ErrorHandlerTest, 0, \ |
|
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780 "If > 0, provokes an error after VM initialization; the value" \ |
|
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781 "determines which error to provoke. See test_error_handler()" \ |
|
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|
782 "in debug.cpp.") \ |
|
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|
783 \ |
| 0 | 784 develop(bool, Verbose, false, \ |
| 785 "Prints additional debugging information from other modes") \ | |
| 786 \ | |
| 787 develop(bool, PrintMiscellaneous, false, \ | |
| 788 "Prints uncategorized debugging information (requires +Verbose)") \ | |
| 789 \ | |
| 790 develop(bool, WizardMode, false, \ | |
| 791 "Prints much more debugging information") \ | |
| 792 \ | |
| 793 product(bool, ShowMessageBoxOnError, false, \ | |
| 794 "Keep process alive on VM fatal error") \ | |
| 795 \ | |
|
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|
796 product(bool, CreateMinidumpOnCrash, false, \ |
|
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|
797 "Create minidump on VM fatal error") \ |
|
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|
798 \ |
| 0 | 799 product_pd(bool, UseOSErrorReporting, \ |
| 800 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
| 801 \ | |
| 802 product(bool, SuppressFatalErrorMessage, false, \ | |
| 803 "Do NO Fatal Error report [Avoid deadlock]") \ | |
| 804 \ | |
| 805 product(ccstrlist, OnError, "", \ | |
| 806 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
| 807 "for examples") \ | |
| 808 \ | |
| 809 product(ccstrlist, OnOutOfMemoryError, "", \ | |
| 810 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
| 811 \ | |
|
615
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|
812 manageable(bool, HeapDumpBeforeFullGC, false, \ |
|
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|
813 "Dump heap to file before any major stop-world GC") \ |
|
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|
814 \ |
|
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|
815 manageable(bool, HeapDumpAfterFullGC, false, \ |
|
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|
816 "Dump heap to file after any major stop-world GC") \ |
|
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|
817 \ |
| 0 | 818 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
| 819 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
| 820 \ | |
| 821 manageable(ccstr, HeapDumpPath, NULL, \ | |
| 822 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
| 823 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
| 824 "in the working directory)") \ | |
| 825 \ | |
| 826 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
| 827 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
| 828 "when the heap usage is larger than this") \ | |
| 829 \ | |
| 830 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
| 831 "Approximate segment size when generating a segmented heap dump") \ | |
| 832 \ | |
| 833 develop(bool, BreakAtWarning, false, \ | |
| 834 "Execute breakpoint upon encountering VM warning") \ | |
| 835 \ | |
| 836 product_pd(bool, UseVectoredExceptions, \ | |
| 837 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
| 838 \ | |
| 839 develop(bool, TraceVMOperation, false, \ | |
| 840 "Trace vm operations") \ | |
| 841 \ | |
| 842 develop(bool, UseFakeTimers, false, \ | |
| 843 "Tells whether the VM should use system time or a fake timer") \ | |
| 844 \ | |
| 845 diagnostic(bool, LogCompilation, false, \ | |
| 846 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
| 847 \ | |
| 848 product(bool, PrintCompilation, false, \ | |
| 849 "Print compilations") \ | |
| 850 \ | |
| 851 diagnostic(bool, TraceNMethodInstalls, false, \ | |
| 852 "Trace nmethod intallation") \ | |
| 853 \ | |
|
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854 diagnostic(intx, ScavengeRootsInCode, 1, \ |
|
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855 "0: do not allow scavengable oops in the code cache; " \ |
|
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|
856 "1: allow scavenging from the code cache; " \ |
|
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|
857 "2: emit as many constants as the compiler can see") \ |
|
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|
858 \ |
| 0 | 859 diagnostic(bool, TraceOSRBreakpoint, false, \ |
| 860 "Trace OSR Breakpoint ") \ | |
| 861 \ | |
| 862 diagnostic(bool, TraceCompileTriggered, false, \ | |
| 863 "Trace compile triggered") \ | |
| 864 \ | |
| 865 diagnostic(bool, TraceTriggers, false, \ | |
| 866 "Trace triggers") \ | |
| 867 \ | |
| 868 product(bool, AlwaysRestoreFPU, false, \ | |
| 869 "Restore the FPU control word after every JNI call (expensive)") \ | |
| 870 \ | |
| 871 notproduct(bool, PrintCompilation2, false, \ | |
| 872 "Print additional statistics per compilation") \ | |
| 873 \ | |
|
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|
874 diagnostic(bool, PrintAdapterHandlers, false, \ |
| 0 | 875 "Print code generated for i2c/c2i adapters") \ |
| 876 \ | |
|
1207
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|
877 develop(bool, VerifyAdapterSharing, false, \ |
|
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|
878 "Verify that the code for shared adapters is the equivalent") \ |
|
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|
879 \ |
|
100
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|
880 diagnostic(bool, PrintAssembly, false, \ |
|
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|
881 "Print assembly code (using external disassembler.so)") \ |
|
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|
882 \ |
|
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883 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
|
100
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|
884 "Options string passed to disassembler.so") \ |
|
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|
885 \ |
|
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|
886 diagnostic(bool, PrintNMethods, false, \ |
| 0 | 887 "Print assembly code for nmethods when generated") \ |
| 888 \ | |
|
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|
889 diagnostic(bool, PrintNativeNMethods, false, \ |
| 0 | 890 "Print assembly code for native nmethods when generated") \ |
| 891 \ | |
| 892 develop(bool, PrintDebugInfo, false, \ | |
| 893 "Print debug information for all nmethods when generated") \ | |
| 894 \ | |
| 895 develop(bool, PrintRelocations, false, \ | |
| 896 "Print relocation information for all nmethods when generated") \ | |
| 897 \ | |
| 898 develop(bool, PrintDependencies, false, \ | |
| 899 "Print dependency information for all nmethods when generated") \ | |
| 900 \ | |
| 901 develop(bool, PrintExceptionHandlers, false, \ | |
| 902 "Print exception handler tables for all nmethods when generated") \ | |
| 903 \ | |
| 904 develop(bool, InterceptOSException, false, \ | |
| 905 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
| 906 "exception happens") \ | |
| 907 \ | |
| 908 notproduct(bool, PrintCodeCache, false, \ | |
| 909 "Print the compiled_code cache when exiting") \ | |
| 910 \ | |
| 911 develop(bool, PrintCodeCache2, false, \ | |
| 912 "Print detailed info on the compiled_code cache when exiting") \ | |
| 913 \ | |
|
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|
914 diagnostic(bool, PrintStubCode, false, \ |
| 0 | 915 "Print generated stub code") \ |
| 916 \ | |
| 917 product(bool, StackTraceInThrowable, true, \ | |
| 918 "Collect backtrace in throwable when exception happens") \ | |
| 919 \ | |
| 920 product(bool, OmitStackTraceInFastThrow, true, \ | |
| 921 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
| 922 \ | |
| 923 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
| 924 "Prints byte code statictics when dumping profiler output") \ | |
| 925 \ | |
| 926 product(bool, ProfilerRecordPC, false, \ | |
| 927 "Collects tick for each 16 byte interval of compiled code") \ | |
| 928 \ | |
| 1064 | 929 product(bool, ProfileVM, false, \ |
| 0 | 930 "Profiles ticks that fall within VM (either in the VM Thread " \ |
| 931 "or VM code called through stubs)") \ | |
| 932 \ | |
| 933 product(bool, ProfileIntervals, false, \ | |
| 934 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
| 935 \ | |
| 936 notproduct(bool, ProfilerCheckIntervals, false, \ | |
| 937 "Collect and print info on spacing of profiler ticks") \ | |
| 938 \ | |
| 939 develop(bool, PrintJVMWarnings, false, \ | |
| 940 "Prints warnings for unimplemented JVM functions") \ | |
| 941 \ | |
|
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942 product(bool, PrintWarnings, true, \ |
|
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943 "Prints JVM warnings to output stream") \ |
|
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944 \ |
| 0 | 945 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
| 946 "Prints warnings for stalled SpinLocks") \ | |
| 947 \ | |
| 948 develop(bool, InitializeJavaLangSystem, true, \ | |
| 949 "Initialize java.lang.System - turn off for individual " \ | |
| 950 "method debugging") \ | |
| 951 \ | |
| 952 develop(bool, InitializeJavaLangString, true, \ | |
| 953 "Initialize java.lang.String - turn off for individual " \ | |
| 954 "method debugging") \ | |
| 955 \ | |
| 956 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
| 957 "Initialize various error and exception classes - turn off for " \ | |
| 958 "individual method debugging") \ | |
| 959 \ | |
| 960 product(bool, RegisterFinalizersAtInit, true, \ | |
| 961 "Register finalizable objects at end of Object.<init> or " \ | |
| 1064 | 962 "after allocation") \ |
| 0 | 963 \ |
| 964 develop(bool, RegisterReferences, true, \ | |
| 965 "Tells whether the VM should register soft/weak/final/phantom " \ | |
| 966 "references") \ | |
| 967 \ | |
| 968 develop(bool, IgnoreRewrites, false, \ | |
| 969 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
| 970 "This is unsafe!") \ | |
| 971 \ | |
| 972 develop(bool, PrintCodeCacheExtension, false, \ | |
| 973 "Print extension of code cache") \ | |
| 974 \ | |
| 975 develop(bool, UsePrivilegedStack, true, \ | |
| 976 "Enable the security JVM functions") \ | |
| 977 \ | |
| 978 develop(bool, IEEEPrecision, true, \ | |
| 979 "Enables IEEE precision (for INTEL only)") \ | |
| 980 \ | |
| 981 develop(bool, ProtectionDomainVerification, true, \ | |
| 982 "Verifies protection domain before resolution in system " \ | |
| 983 "dictionary") \ | |
| 984 \ | |
| 985 product(bool, ClassUnloading, true, \ | |
| 986 "Do unloading of classes") \ | |
| 987 \ | |
|
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988 diagnostic(bool, LinkWellKnownClasses, false, \ |
|
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989 "Resolve a well known class as soon as its name is seen") \ |
|
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990 \ |
| 0 | 991 develop(bool, DisableStartThread, false, \ |
| 992 "Disable starting of additional Java threads " \ | |
| 993 "(for debugging only)") \ | |
| 994 \ | |
| 995 develop(bool, MemProfiling, false, \ | |
| 996 "Write memory usage profiling to log file") \ | |
| 997 \ | |
| 998 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
| 999 "Prints the system dictionary at exit") \ | |
| 1000 \ | |
| 1001 diagnostic(bool, UnsyncloadClass, false, \ | |
| 514 | 1002 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
| 1003 "class loader must call VM synchronized for findClass " \ | |
| 1004 "and defineClass.") \ | |
| 1005 \ | |
| 1006 product(bool, AlwaysLockClassLoader, false, \ | |
| 1007 "Require the VM to acquire the class loader lock before calling " \ | |
| 1008 "loadClass() even for class loaders registering " \ | |
| 1064 | 1009 "as parallel capable") \ |
| 514 | 1010 \ |
| 1011 product(bool, AllowParallelDefineClass, false, \ | |
| 1012 "Allow parallel defineClass requests for class loaders " \ | |
| 1064 | 1013 "registering as parallel capable") \ |
| 514 | 1014 \ |
| 1015 product(bool, MustCallLoadClassInternal, false, \ | |
| 1064 | 1016 "Call loadClassInternal() rather than loadClass()") \ |
| 0 | 1017 \ |
| 1018 product_pd(bool, DontYieldALot, \ | |
| 1019 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
| 1020 \ | |
| 1021 product_pd(bool, ConvertSleepToYield, \ | |
| 1022 "Converts sleep(0) to thread yield " \ | |
| 1023 "(may be off for SOLARIS to improve GUI)") \ | |
| 1024 \ | |
| 1025 product(bool, ConvertYieldToSleep, false, \ | |
| 1026 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
| 1027 "behavior (SOLARIS only)") \ | |
| 1028 \ | |
| 1029 product(bool, UseBoundThreads, true, \ | |
| 1030 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
| 1031 \ | |
| 1032 develop(bool, UseDetachedThreads, true, \ | |
| 1033 "Use detached threads that are recycled upon termination " \ | |
| 1034 "(for SOLARIS only)") \ | |
| 1035 \ | |
| 1036 product(bool, UseLWPSynchronization, true, \ | |
| 1037 "Use LWP-based instead of libthread-based synchronization " \ | |
| 1038 "(SPARC only)") \ | |
| 1039 \ | |
|
370
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|
1040 product(ccstr, SyncKnobs, NULL, \ |
| 0 | 1041 "(Unstable) Various monitor synchronization tunables") \ |
| 1042 \ | |
| 1043 product(intx, EmitSync, 0, \ | |
| 1044 "(Unsafe,Unstable) " \ | |
| 1045 " Controls emission of inline sync fast-path code") \ | |
| 1046 \ | |
| 1047 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ | |
| 1048 \ | |
| 1587 | 1049 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
| 1050 \ | |
| 1051 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
| 1052 \ | |
| 0 | 1053 product(intx, Atomics, 0, \ |
| 1054 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
| 1055 \ | |
| 1056 product(intx, FenceInstruction, 0, \ | |
| 1057 "(Unsafe,Unstable) Experimental") \ | |
| 1058 \ | |
| 1059 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
| 1060 \ | |
| 1061 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
| 1062 \ | |
| 1063 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
| 1064 \ | |
| 1065 product(intx, hashCode, 0, \ | |
| 1066 "(Unstable) select hashCode generation algorithm" ) \ | |
| 1067 \ | |
| 1068 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
| 1069 "(Unstable, Linux-specific)" \ | |
| 1070 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
| 1071 \ | |
| 1064 | 1072 product(bool, FilterSpuriousWakeups, true, \ |
| 1073 "Prevent spurious or premature wakeups from object.wait " \ | |
| 1074 "(Solaris only)") \ | |
| 0 | 1075 \ |
| 1076 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
| 1077 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
| 1078 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
| 1079 \ | |
| 1080 develop(bool, UsePthreads, false, \ | |
| 1081 "Use pthread-based instead of libthread-based synchronization " \ | |
| 1082 "(SPARC only)") \ | |
| 1083 \ | |
| 1084 product(bool, AdjustConcurrency, false, \ | |
| 1085 "call thr_setconcurrency at thread create time to avoid " \ | |
| 1086 "LWP starvation on MP systems (For Solaris Only)") \ | |
| 1087 \ | |
| 1088 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ | |
| 1089 "Should the system attempt to update the compiler file when " \ | |
| 1090 "an error occurs?") \ | |
| 1091 \ | |
| 1092 product(bool, ReduceSignalUsage, false, \ | |
| 1093 "Reduce the use of OS signals in Java and/or the VM") \ | |
| 1094 \ | |
| 1095 notproduct(bool, ValidateMarkSweep, false, \ | |
| 1096 "Do extra validation during MarkSweep collection") \ | |
| 1097 \ | |
| 1098 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
| 1099 "Enable GC-to-GC recording and querying of compaction during " \ | |
| 1100 "MarkSweep") \ | |
| 1101 \ | |
| 1102 develop_pd(bool, ShareVtableStubs, \ | |
| 1103 "Share vtable stubs (smaller code but worse branch prediction") \ | |
| 1104 \ | |
| 1105 develop(bool, LoadLineNumberTables, true, \ | |
| 1106 "Tells whether the class file parser loads line number tables") \ | |
| 1107 \ | |
| 1108 develop(bool, LoadLocalVariableTables, true, \ | |
| 1109 "Tells whether the class file parser loads local variable tables")\ | |
| 1110 \ | |
| 1111 develop(bool, LoadLocalVariableTypeTables, true, \ | |
| 1112 "Tells whether the class file parser loads local variable type tables")\ | |
| 1113 \ | |
| 1114 product(bool, AllowUserSignalHandlers, false, \ | |
| 1115 "Do not complain if the application installs signal handlers " \ | |
| 1116 "(Solaris & Linux only)") \ | |
| 1117 \ | |
| 1118 product(bool, UseSignalChaining, true, \ | |
| 1119 "Use signal-chaining to invoke signal handlers installed " \ | |
| 1120 "by the application (Solaris & Linux only)") \ | |
| 1121 \ | |
| 1122 product(bool, UseAltSigs, false, \ | |
| 1123 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
| 1064 | 1124 "internal signals (Solaris only)") \ |
| 0 | 1125 \ |
| 1126 product(bool, UseSpinning, false, \ | |
| 1127 "Use spinning in monitor inflation and before entry") \ | |
| 1128 \ | |
| 1129 product(bool, PreSpinYield, false, \ | |
| 1130 "Yield before inner spinning loop") \ | |
| 1131 \ | |
| 1132 product(bool, PostSpinYield, true, \ | |
| 1133 "Yield after inner spinning loop") \ | |
| 1134 \ | |
| 1135 product(bool, AllowJNIEnvProxy, false, \ | |
| 1136 "Allow JNIEnv proxies for jdbx") \ | |
| 1137 \ | |
| 1138 product(bool, JNIDetachReleasesMonitors, true, \ | |
| 1139 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
| 1140 \ | |
| 1141 product(bool, RestoreMXCSROnJNICalls, false, \ | |
| 1142 "Restore MXCSR when returning from JNI calls") \ | |
| 1143 \ | |
| 1144 product(bool, CheckJNICalls, false, \ | |
| 1145 "Verify all arguments to JNI calls") \ | |
| 1146 \ | |
| 1147 product(bool, UseFastJNIAccessors, true, \ | |
| 1148 "Use optimized versions of Get<Primitive>Field") \ | |
| 1149 \ | |
| 1150 product(bool, EagerXrunInit, false, \ | |
| 1151 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
| 1152 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
| 1153 \ | |
| 1154 product(bool, PreserveAllAnnotations, false, \ | |
| 1155 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
| 1156 \ | |
| 1157 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
| 1158 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
| 1159 \ | |
| 1160 product(bool, LazyBootClassLoader, true, \ | |
| 1161 "Enable/disable lazy opening of boot class path entries") \ | |
| 1162 \ | |
| 1163 diagnostic(bool, UseIncDec, true, \ | |
| 1164 "Use INC, DEC instructions on x86") \ | |
| 1165 \ | |
| 219 | 1166 product(bool, UseNewLongLShift, false, \ |
| 1167 "Use optimized bitwise shift left") \ | |
| 1168 \ | |
| 0 | 1169 product(bool, UseStoreImmI16, true, \ |
| 1170 "Use store immediate 16-bits value instruction on x86") \ | |
| 1171 \ | |
| 1172 product(bool, UseAddressNop, false, \ | |
| 1173 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
| 1174 \ | |
| 1175 product(bool, UseXmmLoadAndClearUpper, true, \ | |
| 1176 "Load low part of XMM register and clear upper part") \ | |
| 1177 \ | |
| 1178 product(bool, UseXmmRegToRegMoveAll, false, \ | |
| 1179 "Copy all XMM register bits when moving value between registers") \ | |
| 1180 \ | |
| 71 | 1181 product(bool, UseXmmI2D, false, \ |
| 1182 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
| 1183 \ | |
| 1184 product(bool, UseXmmI2F, false, \ | |
| 1185 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
| 1186 \ | |
| 405 | 1187 product(bool, UseXMMForArrayCopy, false, \ |
| 1188 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
| 1189 \ | |
| 1190 product(bool, UseUnalignedLoadStores, false, \ | |
| 1191 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
| 1192 \ | |
| 0 | 1193 product(intx, FieldsAllocationStyle, 1, \ |
|
1366
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1194 "0 - type based with oops first, 1 - with oops last, " \ |
|
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|
1195 "2 - oops in super and sub classes are together") \ |
| 0 | 1196 \ |
| 1197 product(bool, CompactFields, true, \ | |
| 1198 "Allocate nonstatic fields in gaps between previous fields") \ | |
| 1199 \ | |
| 1200 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
| 1201 "Print how many words were saved with CompactFields") \ | |
| 1202 \ | |
| 1203 product(bool, UseBiasedLocking, true, \ | |
| 1204 "Enable biased locking in JVM") \ | |
| 1205 \ | |
| 1206 product(intx, BiasedLockingStartupDelay, 4000, \ | |
| 1207 "Number of milliseconds to wait before enabling biased locking") \ | |
| 1208 \ | |
| 1209 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
| 1210 "Print statistics of biased locking in JVM") \ | |
| 1211 \ | |
| 1212 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
| 1213 "Threshold of number of revocations per type to try to " \ | |
| 1214 "rebias all objects in the heap of that type") \ | |
| 1215 \ | |
| 1216 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
| 1217 "Threshold of number of revocations per type to permanently " \ | |
| 1218 "revoke biases of all objects in the heap of that type") \ | |
| 1219 \ | |
| 1220 product(intx, BiasedLockingDecayTime, 25000, \ | |
| 1221 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
| 1222 "type after previous bulk rebias") \ | |
| 1223 \ | |
|
2376
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|
1224 develop(bool, JavaObjectsInPerm, false, \ |
|
c7f3d0b4570f
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parents:
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diff
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|
1225 "controls whether Classes and interned Strings are allocated" \ |
|
c7f3d0b4570f
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parents:
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|
1226 "in perm. This purely intended to allow debugging issues" \ |
|
c7f3d0b4570f
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diff
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|
1227 "in production.") \ |
|
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|
1228 \ |
| 0 | 1229 /* tracing */ \ |
| 1230 \ | |
| 1231 notproduct(bool, TraceRuntimeCalls, false, \ | |
| 1232 "Trace run-time calls") \ | |
| 1233 \ | |
| 1234 develop(bool, TraceJNICalls, false, \ | |
| 1235 "Trace JNI calls") \ | |
| 1236 \ | |
| 1237 notproduct(bool, TraceJVMCalls, false, \ | |
| 1238 "Trace JVM calls") \ | |
| 1239 \ | |
|
370
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|
1240 product(ccstr, TraceJVMTI, NULL, \ |
| 0 | 1241 "Trace flags for JVMTI functions and events") \ |
| 1242 \ | |
| 1243 /* This option can change an EMCP method into an obsolete method. */ \ | |
| 1244 /* This can affect tests that except specific methods to be EMCP. */ \ | |
| 1245 /* This option should be used with caution. */ \ | |
| 1246 product(bool, StressLdcRewrite, false, \ | |
| 1247 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
| 1248 \ | |
| 1249 product(intx, TraceRedefineClasses, 0, \ | |
| 1250 "Trace level for JVMTI RedefineClasses") \ | |
| 1251 \ | |
| 1574 | 1252 develop(bool, StressMethodComparator, false, \ |
| 1253 "run the MethodComparator on all loaded methods") \ | |
| 1254 \ | |
| 0 | 1255 /* change to false by default sometime after Mustang */ \ |
| 1256 product(bool, VerifyMergedCPBytecodes, true, \ | |
| 1257 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
| 1258 \ | |
| 1259 develop(bool, TraceJNIHandleAllocation, false, \ | |
| 1260 "Trace allocation/deallocation of JNI handle blocks") \ | |
| 1261 \ | |
| 1262 develop(bool, TraceThreadEvents, false, \ | |
| 1263 "Trace all thread events") \ | |
| 1264 \ | |
| 1265 develop(bool, TraceBytecodes, false, \ | |
| 1266 "Trace bytecode execution") \ | |
| 1267 \ | |
| 1268 develop(bool, TraceClassInitialization, false, \ | |
| 1269 "Trace class initialization") \ | |
| 1270 \ | |
| 1271 develop(bool, TraceExceptions, false, \ | |
| 1272 "Trace exceptions") \ | |
| 1273 \ | |
| 1274 develop(bool, TraceICs, false, \ | |
| 1275 "Trace inline cache changes") \ | |
| 1276 \ | |
| 1277 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
| 1278 "Trace method invocation counter overflow") \ | |
| 1279 \ | |
| 1280 develop(bool, TraceInlineCacheClearing, false, \ | |
| 1281 "Trace clearing of inline caches in nmethods") \ | |
| 1282 \ | |
| 1283 develop(bool, TraceDependencies, false, \ | |
| 1284 "Trace dependencies") \ | |
| 1285 \ | |
| 1286 develop(bool, VerifyDependencies, trueInDebug, \ | |
| 1287 "Exercise and verify the compilation dependency mechanism") \ | |
| 1288 \ | |
| 1289 develop(bool, TraceNewOopMapGeneration, false, \ | |
| 1290 "Trace OopMapGeneration") \ | |
| 1291 \ | |
| 1292 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
| 1293 "Trace OopMapGeneration: print detailed cell states") \ | |
| 1294 \ | |
| 1295 develop(bool, TimeOopMap, false, \ | |
| 1296 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
| 1297 \ | |
| 1298 develop(bool, TimeOopMap2, false, \ | |
| 1299 "Time calls to GenerateOopMap::compute_map() individually") \ | |
| 1300 \ | |
| 1301 develop(bool, TraceMonitorMismatch, false, \ | |
| 1302 "Trace monitor matching failures during OopMapGeneration") \ | |
| 1303 \ | |
| 1304 develop(bool, TraceOopMapRewrites, false, \ | |
| 1305 "Trace rewritting of method oops during oop map generation") \ | |
| 1306 \ | |
| 1307 develop(bool, TraceSafepoint, false, \ | |
| 1308 "Trace safepoint operations") \ | |
| 1309 \ | |
| 1310 develop(bool, TraceICBuffer, false, \ | |
| 1311 "Trace usage of IC buffer") \ | |
| 1312 \ | |
| 1313 develop(bool, TraceCompiledIC, false, \ | |
| 1314 "Trace changes of compiled IC") \ | |
| 1315 \ | |
| 1316 notproduct(bool, TraceZapDeadLocals, false, \ | |
| 1317 "Trace zapping dead locals") \ | |
| 1318 \ | |
| 1319 develop(bool, TraceStartupTime, false, \ | |
| 1320 "Trace setup time") \ | |
| 1321 \ | |
| 1322 product(ccstr, HPILibPath, NULL, \ | |
| 1323 "Specify alternate path to HPI library") \ | |
| 1324 \ | |
| 1325 develop(bool, TraceProtectionDomainVerification, false, \ | |
| 1326 "Trace protection domain verifcation") \ | |
| 1327 \ | |
| 1328 develop(bool, TraceClearedExceptions, false, \ | |
| 1329 "Prints when an exception is forcibly cleared") \ | |
| 1330 \ | |
| 1331 product(bool, TraceClassResolution, false, \ | |
| 1332 "Trace all constant pool resolutions (for debugging)") \ | |
| 1333 \ | |
| 1334 product(bool, TraceBiasedLocking, false, \ | |
| 1335 "Trace biased locking in JVM") \ | |
| 1336 \ | |
| 1337 product(bool, TraceMonitorInflation, false, \ | |
| 1338 "Trace monitor inflation in JVM") \ | |
| 1339 \ | |
| 1340 /* assembler */ \ | |
| 1341 product(bool, Use486InstrsOnly, false, \ | |
| 1342 "Use 80486 Compliant instruction subset") \ | |
| 1343 \ | |
| 1344 /* gc */ \ | |
| 1345 \ | |
| 1346 product(bool, UseSerialGC, false, \ | |
|
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1347 "Use the serial garbage collector") \ |
|
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|
1348 \ |
|
1193
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|
1349 product(bool, UseG1GC, false, \ |
|
342
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|
1350 "Use the Garbage-First garbage collector") \ |
| 0 | 1351 \ |
| 1352 product(bool, UseParallelGC, false, \ | |
| 1353 "Use the Parallel Scavenge garbage collector") \ | |
| 1354 \ | |
| 1355 product(bool, UseParallelOldGC, false, \ | |
| 1356 "Use the Parallel Old garbage collector") \ | |
| 1357 \ | |
| 1358 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
| 1359 "How often should we maximally compact the heap (not allowing " \ | |
| 1360 "any dead space)") \ | |
| 1361 \ | |
| 1362 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
| 1363 "The collection count for the first maximum compaction") \ | |
| 1364 \ | |
| 1365 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
| 1366 "In the Parallel Old garbage collector maximum compaction for " \ | |
| 1367 "a system GC") \ | |
| 1368 \ | |
| 1369 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
| 1370 "The mean used by the par compact dead wood" \ | |
| 1371 "limiter (a number between 0-100).") \ | |
| 1372 \ | |
| 1373 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
| 1374 "The standard deviation used by the par compact dead wood" \ | |
| 1375 "limiter (a number between 0-100).") \ | |
| 1376 \ | |
| 1377 product(uintx, ParallelGCThreads, 0, \ | |
| 1378 "Number of parallel threads parallel gc will use") \ | |
| 1379 \ | |
|
483
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|
1380 develop(bool, ParallelOldGCSplitALot, false, \ |
|
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|
1381 "Provoke splitting (copying data from a young gen space to" \ |
|
0f773163217d
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diff
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|
1382 "multiple destination spaces)") \ |
|
0f773163217d
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diff
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|
1383 \ |
|
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|
1384 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
|
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|
1385 "How often to provoke splitting a young gen space") \ |
| 0 | 1386 \ |
|
375
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|
1387 develop(bool, TraceRegionTasksQueuing, false, \ |
|
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|
1388 "Trace the queuing of the region tasks") \ |
| 0 | 1389 \ |
| 1284 | 1390 product(uintx, ConcGCThreads, 0, \ |
| 1391 "Number of threads concurrent gc will use") \ | |
|
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1392 \ |
| 0 | 1393 product(uintx, YoungPLABSize, 4096, \ |
| 1394 "Size of young gen promotion labs (in HeapWords)") \ | |
| 1395 \ | |
| 1396 product(uintx, OldPLABSize, 1024, \ | |
| 1397 "Size of old gen promotion labs (in HeapWords)") \ | |
| 1398 \ | |
| 1399 product(uintx, GCTaskTimeStampEntries, 200, \ | |
| 1400 "Number of time stamp entries per gc worker thread") \ | |
| 1401 \ | |
| 1402 product(bool, AlwaysTenure, false, \ | |
| 1403 "Always tenure objects in eden. (ParallelGC only)") \ | |
| 1404 \ | |
| 1405 product(bool, NeverTenure, false, \ | |
| 1064 | 1406 "Never tenure objects in eden, May tenure on overflow " \ |
| 1407 "(ParallelGC only)") \ | |
| 0 | 1408 \ |
| 1409 product(bool, ScavengeBeforeFullGC, true, \ | |
| 1064 | 1410 "Scavenge youngest generation before each full GC, " \ |
| 1411 "used with UseParallelGC") \ | |
| 0 | 1412 \ |
| 1413 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
| 1414 "Allow scavenges to occur when to_space contains objects.") \ | |
| 1415 \ | |
| 1416 product(bool, UseConcMarkSweepGC, false, \ | |
| 1417 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
| 1418 \ | |
| 1419 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
| 1420 "A System.gc() request invokes a concurrent collection;" \ | |
| 1421 " (effective only when UseConcMarkSweepGC)") \ | |
| 1422 \ | |
| 1423 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
| 1064 | 1424 "A System.gc() request invokes a concurrent collection and " \ |
| 1425 "also unloads classes during such a concurrent gc cycle " \ | |
| 1426 "(effective only when UseConcMarkSweepGC)") \ | |
| 0 | 1427 \ |
|
1520
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|
1428 product(bool, GCLockerInvokesConcurrent, false, \ |
|
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diff
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|
1429 "The exit of a JNI CS necessitating a scavenge also" \ |
|
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|
1430 " kicks off a bkgrd concurrent collection") \ |
|
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|
1431 \ |
|
1991
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diff
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|
1432 product(uintx, GCLockerEdenExpansionPercent, 5, \ |
|
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diff
changeset
|
1433 "How much the GC can expand the eden by while the GC locker " \ |
|
016a3628c885
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diff
changeset
|
1434 "is active (as a percentage)") \ |
|
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|
1435 \ |
| 0 | 1436 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
| 1437 "Use Adaptive Free Lists in the CMS generation") \ | |
| 1438 \ | |
| 1439 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
| 1440 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
| 1441 \ | |
| 1442 develop(bool, RotateCMSCollectionTypes, false, \ | |
| 1443 "Rotate the CMS collections among concurrent and STW") \ | |
| 1444 \ | |
| 1445 product(bool, UseCMSBestFit, true, \ | |
| 1446 "Use CMS best fit allocation strategy") \ | |
| 1447 \ | |
| 1448 product(bool, UseCMSCollectionPassing, true, \ | |
| 1449 "Use passing of collection from background to foreground") \ | |
| 1450 \ | |
| 1451 product(bool, UseParNewGC, false, \ | |
| 1452 "Use parallel threads in the new generation.") \ | |
| 1453 \ | |
| 1454 product(bool, ParallelGCVerbose, false, \ | |
| 1455 "Verbose output for parallel GC.") \ | |
| 1456 \ | |
| 1457 product(intx, ParallelGCBufferWastePct, 10, \ | |
| 1458 "wasted fraction of parallel allocation buffer.") \ | |
| 1459 \ | |
| 1460 product(bool, ParallelGCRetainPLAB, true, \ | |
| 1461 "Retain parallel allocation buffers across scavenges.") \ | |
| 1462 \ | |
| 1463 product(intx, TargetPLABWastePct, 10, \ | |
| 1464 "target wasted space in last buffer as pct of overall allocation")\ | |
| 1465 \ | |
| 1466 product(uintx, PLABWeight, 75, \ | |
| 1467 "Percentage (0-100) used to weight the current sample when" \ | |
| 1468 "computing exponentially decaying average for ResizePLAB.") \ | |
| 1469 \ | |
| 1470 product(bool, ResizePLAB, true, \ | |
| 1471 "Dynamically resize (survivor space) promotion labs") \ | |
| 1472 \ | |
| 1473 product(bool, PrintPLAB, false, \ | |
| 1474 "Print (survivor space) promotion labs sizing decisions") \ | |
| 1475 \ | |
| 1476 product(intx, ParGCArrayScanChunk, 50, \ | |
| 1477 "Scan a subset and push remainder, if array is bigger than this") \ | |
| 1478 \ | |
| 695 | 1479 product(bool, ParGCUseLocalOverflow, false, \ |
| 1480 "Instead of a global overflow list, use local overflow stacks") \ | |
| 1481 \ | |
|
679
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1482 product(bool, ParGCTrimOverflow, true, \ |
| 695 | 1483 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ |
|
679
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1484 \ |
| 534 | 1485 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
| 1486 "Whether we should simulate work queue overflow in ParNew") \ | |
| 1487 \ | |
| 1488 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
| 1064 | 1489 "An `interval' counter that determines how frequently " \ |
| 1490 "we simulate overflow; a smaller number increases frequency") \ | |
| 534 | 1491 \ |
| 1492 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
| 0 | 1493 "The desired number of objects to claim from the overflow list") \ |
| 1494 \ | |
|
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1495 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
| 0 | 1496 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
| 1497 "parallel GC.") \ | |
| 1498 \ | |
|
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1499 product(uintx, OldPLABWeight, 50, \ |
|
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1500 "Percentage (0-100) used to weight the current sample when" \ |
|
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1501 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ |
|
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|
1502 \ |
|
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1503 product(bool, ResizeOldPLAB, true, \ |
|
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1504 "Dynamically resize (old gen) promotion labs") \ |
|
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1505 \ |
|
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1506 product(bool, PrintOldPLAB, false, \ |
|
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1507 "Print (old gen) promotion labs sizing decisions") \ |
|
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|
1508 \ |
|
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1509 product(uintx, CMSOldPLABMin, 16, \ |
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1510 "Min size of CMS gen promotion lab caches per worker per blksize")\ |
|
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|
1511 \ |
|
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1512 product(uintx, CMSOldPLABMax, 1024, \ |
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1513 "Max size of CMS gen promotion lab caches per worker per blksize")\ |
|
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1514 \ |
|
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1515 product(uintx, CMSOldPLABNumRefills, 4, \ |
|
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1516 "Nominal number of refills of CMS gen promotion lab cache" \ |
|
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1517 " per worker per block size") \ |
|
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|
1518 \ |
|
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|
1519 product(bool, CMSOldPLABResizeQuicker, false, \ |
|
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1520 "Whether to react on-the-fly during a scavenge to a sudden" \ |
|
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1521 " change in block demand rate") \ |
|
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|
1522 \ |
|
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|
1523 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
|
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1524 "The tolerance of the phase-change detector for on-the-fly" \ |
|
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1525 " PLAB resizing during a scavenge") \ |
|
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|
1526 \ |
|
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|
1527 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
|
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1528 "The gain in the feedback loop for on-the-fly PLAB resizing" \ |
|
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1529 " during a scavenge") \ |
|
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|
1530 \ |
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1531 product(uintx, CMSOldPLABReactivityCeiling, 10, \ |
|
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1532 "The clamping of the gain in the feedback loop for on-the-fly" \ |
|
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1533 " PLAB resizing during a scavenge") \ |
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|
1534 \ |
| 0 | 1535 product(bool, AlwaysPreTouch, false, \ |
| 1536 "It forces all freshly committed pages to be pre-touched.") \ | |
| 1537 \ | |
|
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1538 product_pd(intx, CMSYoungGenPerWorker, \ |
|
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1539 "The maximum size of young gen chosen by default per GC worker " \ |
| 1064 | 1540 "thread available") \ |
| 0 | 1541 \ |
|
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1542 product(bool, GCOverheadReporting, false, \ |
|
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1543 "Enables the GC overhead reporting facility") \ |
|
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|
1544 \ |
|
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1545 product(intx, GCOverheadReportingPeriodMS, 100, \ |
|
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1546 "Reporting period for conc GC overhead reporting, in ms ") \ |
|
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1547 \ |
| 0 | 1548 product(bool, CMSIncrementalMode, false, \ |
| 1549 "Whether CMS GC should operate in \"incremental\" mode") \ | |
| 1550 \ | |
| 1551 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
| 1552 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
| 1553 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
| 1554 "value") \ | |
| 1555 \ | |
| 1556 product(bool, CMSIncrementalPacing, true, \ | |
| 1557 "Whether the CMS incremental mode duty cycle should be " \ | |
| 1558 "automatically adjusted") \ | |
| 1559 \ | |
| 1560 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
| 1064 | 1561 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ |
| 1562 "enabled (a percentage, 0-100)") \ | |
| 0 | 1563 \ |
| 1564 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
| 1064 | 1565 "Percentage (0-100) used to add conservatism when computing the " \ |
| 1566 "duty cycle") \ | |
| 0 | 1567 \ |
| 1568 product(uintx, CMSIncrementalOffset, 0, \ | |
| 1569 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
| 1064 | 1570 " is shifted to the right within the period between young GCs") \ |
| 0 | 1571 \ |
|
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1572 product(uintx, CMSExpAvgFactor, 50, \ |
|
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1573 "Percentage (0-100) used to weight the current sample when" \ |
|
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|
1574 "computing exponential averages for CMS statistics.") \ |
|
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|
1575 \ |
|
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|
1576 product(uintx, CMS_FLSWeight, 75, \ |
|
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|
1577 "Percentage (0-100) used to weight the current sample when" \ |
|
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|
1578 "computing exponentially decating averages for CMS FLS statistics.") \ |
|
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|
1579 \ |
|
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|
1580 product(uintx, CMS_FLSPadding, 1, \ |
|
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|
1581 "The multiple of deviation from mean to use for buffering" \ |
| 0 | 1582 "against volatility in free list demand.") \ |
| 1583 \ | |
| 1584 product(uintx, FLSCoalescePolicy, 2, \ | |
| 1585 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
| 1586 \ | |
|
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1587 product(bool, FLSAlwaysCoalesceLarge, false, \ |
|
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|
1588 "CMS: Larger free blocks are always available for coalescing") \ |
|
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|
1589 \ |
|
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|
1590 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
|
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|
1591 "CMS: the smaller the percentage the greater the coalition force")\ |
|
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|
1592 \ |
|
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1593 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
|
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|
1594 "CMS: the factor by which to inflate estimated demand of small" \ |
|
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|
1595 " block sizes to prevent coalescing with an adjoining block") \ |
|
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|
1596 \ |
|
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|
1597 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
|
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|
1598 "CMS: the factor by which to inflate estimated demand of large" \ |
|
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|
1599 " block sizes to prevent coalescing with an adjoining block") \ |
|
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|
1600 \ |
|
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|
1601 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
|
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|
1602 "CMS: the factor by which to inflate estimated demand of small" \ |
|
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|
1603 " block sizes to prevent splitting to supply demand for smaller" \ |
|
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|
1604 " blocks") \ |
|
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|
1605 \ |
|
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|
1606 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
|
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|
1607 "CMS: the factor by which to inflate estimated demand of large" \ |
|
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|
1608 " block sizes to prevent splitting to supply demand for smaller" \ |
|
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|
1609 " blocks") \ |
|
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|
1610 \ |
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|
1611 product(bool, CMSExtrapolateSweep, false, \ |
|
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1612 "CMS: cushion for block demand during sweep") \ |
|
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|
1613 \ |
|
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1614 product(uintx, CMS_SweepWeight, 75, \ |
| 1064 | 1615 "Percentage (0-100) used to weight the current sample when " \ |
| 1616 "computing exponentially decaying average for inter-sweep " \ | |
| 1617 "duration") \ | |
| 0 | 1618 \ |
|
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|
1619 product(uintx, CMS_SweepPadding, 1, \ |
| 1064 | 1620 "The multiple of deviation from mean to use for buffering " \ |
| 0 | 1621 "against volatility in inter-sweep duration.") \ |
| 1622 \ | |
| 1623 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
| 1624 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
| 1064 | 1625 "duration exceeds this threhold in milliseconds") \ |
| 0 | 1626 \ |
| 1627 develop(bool, CMSTraceIncrementalMode, false, \ | |
| 1628 "Trace CMS incremental mode") \ | |
| 1629 \ | |
| 1630 develop(bool, CMSTraceIncrementalPacing, false, \ | |
| 1631 "Trace CMS incremental mode pacing computation") \ | |
| 1632 \ | |
| 1633 develop(bool, CMSTraceThreadState, false, \ | |
| 1634 "Trace the CMS thread state (enable the trace_state() method)") \ | |
| 1635 \ | |
| 1636 product(bool, CMSClassUnloadingEnabled, false, \ | |
| 1637 "Whether class unloading enabled when using CMS GC") \ | |
| 1638 \ | |
|
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|
1639 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
|
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|
1640 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
|
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|
1641 " for which classes may not be unloaded") \ |
|
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|
1642 \ |
| 0 | 1643 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
| 1644 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
| 1645 \ | |
| 1646 product(bool, UseCMSCompactAtFullCollection, true, \ | |
| 1647 "Use mark sweep compact at full collections") \ | |
| 1648 \ | |
| 1649 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
| 1650 "Number of CMS full collection done before compaction if > 0") \ | |
| 1651 \ | |
| 1652 develop(intx, CMSDictionaryChoice, 0, \ | |
| 1653 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
| 1654 \ | |
| 1655 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
|
1777
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|
1656 "Replenish an indexed free list with this number of chunks") \ |
| 0 | 1657 \ |
|
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|
1658 product(bool, CMSReplenishIntermediate, true, \ |
|
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1659 "Replenish all intermediate free-list caches") \ |
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1660 \ |
|
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1661 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
|
1777
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1662 "When satisfying batched demand, split blocks from the " \ |
|
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1663 "IndexedFreeList whose size is a multiple of requested size") \ |
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1664 \ |
| 0 | 1665 product(bool, CMSLoopWarn, false, \ |
| 1666 "Warn in case of excessive CMS looping") \ | |
| 1667 \ | |
| 1668 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
| 1669 "Whether preserved marks should be restored early") \ | |
| 1670 \ | |
| 1284 | 1671 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
| 1672 "Size of marking stack") \ | |
| 1673 \ | |
| 1674 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
| 1675 "Max size of marking stack") \ | |
| 0 | 1676 \ |
| 1677 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
| 1678 "Whether we should simulate frequent marking stack / work queue" \ | |
| 1679 " overflow") \ | |
| 1680 \ | |
| 534 | 1681 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
| 1682 "An `interval' counter that determines how frequently" \ | |
| 0 | 1683 " we simulate overflow; a smaller number increases frequency") \ |
| 1684 \ | |
| 1685 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
| 1686 "(Temporary, subject to experimentation)" \ | |
| 1687 "Maximum number of abortable preclean iterations, if > 0") \ | |
| 1688 \ | |
| 1689 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
| 1690 "(Temporary, subject to experimentation)" \ | |
| 1691 "Maximum time in abortable preclean in ms") \ | |
| 1692 \ | |
| 1693 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
| 1694 "(Temporary, subject to experimentation)" \ | |
| 1695 "Nominal minimum work per abortable preclean iteration") \ | |
| 1696 \ | |
|
1887
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1697 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
| 0 | 1698 "(Temporary, subject to experimentation)" \ |
| 1699 " Time that we sleep between iterations when not given" \ | |
| 1700 " enough work per iteration") \ | |
| 1701 \ | |
| 1702 product(uintx, CMSRescanMultiple, 32, \ | |
| 1703 "Size (in cards) of CMS parallel rescan task") \ | |
| 1704 \ | |
| 1705 product(uintx, CMSConcMarkMultiple, 32, \ | |
| 1706 "Size (in cards) of CMS concurrent MT marking task") \ | |
| 1707 \ | |
| 1708 product(uintx, CMSRevisitStackSize, 1*M, \ | |
| 1709 "Size of CMS KlassKlass revisit stack") \ | |
| 1710 \ | |
| 1711 product(bool, CMSAbortSemantics, false, \ | |
| 1712 "Whether abort-on-overflow semantics is implemented") \ | |
| 1713 \ | |
| 1714 product(bool, CMSParallelRemarkEnabled, true, \ | |
| 1715 "Whether parallel remark enabled (only if ParNewGC)") \ | |
| 1716 \ | |
| 1717 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
| 1718 "Whether parallel remark of survivor space" \ | |
| 1719 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
| 1720 \ | |
| 1721 product(bool, CMSPLABRecordAlways, true, \ | |
| 1722 "Whether to always record survivor space PLAB bdries" \ | |
| 1723 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
| 1724 \ | |
| 1725 product(bool, CMSConcurrentMTEnabled, true, \ | |
| 1726 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
| 1727 \ | |
| 1728 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
| 1729 "Whether concurrent precleaning enabled in perm gen" \ | |
| 1730 " (effective only when CMSPrecleaningEnabled is true)") \ | |
| 1731 \ | |
| 1732 product(bool, CMSPrecleaningEnabled, true, \ | |
| 1733 "Whether concurrent precleaning enabled") \ | |
| 1734 \ | |
| 1735 product(uintx, CMSPrecleanIter, 3, \ | |
| 1736 "Maximum number of precleaning iteration passes") \ | |
| 1737 \ | |
| 1738 product(uintx, CMSPrecleanNumerator, 2, \ | |
| 1739 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
| 1740 " ratio") \ | |
| 1741 \ | |
| 1742 product(uintx, CMSPrecleanDenominator, 3, \ | |
| 1743 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
| 1744 " ratio") \ | |
| 1745 \ | |
|
452
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1746 product(bool, CMSPrecleanRefLists1, true, \ |
| 0 | 1747 "Preclean ref lists during (initial) preclean phase") \ |
| 1748 \ | |
| 1749 product(bool, CMSPrecleanRefLists2, false, \ | |
| 1750 "Preclean ref lists during abortable preclean phase") \ | |
| 1751 \ | |
| 1752 product(bool, CMSPrecleanSurvivors1, false, \ | |
| 1753 "Preclean survivors during (initial) preclean phase") \ | |
| 1754 \ | |
| 1755 product(bool, CMSPrecleanSurvivors2, true, \ | |
| 1756 "Preclean survivors during abortable preclean phase") \ | |
| 1757 \ | |
| 1758 product(uintx, CMSPrecleanThreshold, 1000, \ | |
| 1759 "Don't re-iterate if #dirty cards less than this") \ | |
| 1760 \ | |
| 1761 product(bool, CMSCleanOnEnter, true, \ | |
| 1762 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
| 1763 \ | |
| 1764 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
| 1765 "Choose variant (1,2) of verification following remark") \ | |
| 1766 \ | |
| 1767 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
| 1768 "If Eden used is below this value, don't try to schedule remark") \ | |
| 1769 \ | |
| 1770 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
| 1771 "The Eden occupancy % at which to try and schedule remark pause") \ | |
| 1772 \ | |
| 1773 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
| 1774 "Start sampling Eden top at least before yg occupancy reaches" \ | |
| 1775 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
| 1776 \ | |
| 1777 product(uintx, CMSSamplingGrain, 16*K, \ | |
| 1778 "The minimum distance between eden samples for CMS (see above)") \ | |
| 1779 \ | |
| 1780 product(bool, CMSScavengeBeforeRemark, false, \ | |
| 1781 "Attempt scavenge before the CMS remark step") \ | |
| 1782 \ | |
| 1783 develop(bool, CMSTraceSweeper, false, \ | |
| 1784 "Trace some actions of the CMS sweeper") \ | |
| 1785 \ | |
| 1786 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
| 1787 "Don't drain below this size per parallel worker/thief") \ | |
| 1788 \ | |
|
1887
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1789 manageable(intx, CMSWaitDuration, 2000, \ |
| 0 | 1790 "Time in milliseconds that CMS thread waits for young GC") \ |
| 1791 \ | |
| 1792 product(bool, CMSYield, true, \ | |
| 1793 "Yield between steps of concurrent mark & sweep") \ | |
| 1794 \ | |
| 1795 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
| 1796 "Bitmap operations should process at most this many bits" \ | |
| 1797 "between yields") \ | |
| 1798 \ | |
|
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1799 product(bool, CMSDumpAtPromotionFailure, false, \ |
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1800 "Dump useful information about the state of the CMS old " \ |
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1801 " generation upon a promotion failure.") \ |
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1802 \ |
|
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1803 product(bool, CMSPrintChunksInDump, false, \ |
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1804 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1805 " more detailed information about the free chunks.") \ |
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1806 \ |
|
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1807 product(bool, CMSPrintObjectsInDump, false, \ |
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1808 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1809 " more detailed information about the allocated objects.") \ |
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1810 \ |
| 0 | 1811 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
| 1812 "Verify that all refs across the FLS boundary " \ | |
| 1813 " are to valid objects") \ | |
| 1814 \ | |
| 1815 diagnostic(bool, FLSVerifyLists, false, \ | |
| 1816 "Do lots of (expensive) FreeListSpace verification") \ | |
| 1817 \ | |
| 1818 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
| 1819 "Do lots of (expensive) FLS index table verification") \ | |
| 1820 \ | |
| 1821 develop(bool, FLSVerifyDictionary, false, \ | |
| 1822 "Do lots of (expensive) FLS dictionary verification") \ | |
| 1823 \ | |
| 1824 develop(bool, VerifyBlockOffsetArray, false, \ | |
| 1825 "Do (expensive!) block offset array verification") \ | |
| 1826 \ | |
|
1716
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1827 product(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
| 0 | 1828 "Maintain _unallocated_block in BlockOffsetArray" \ |
| 1829 " (currently applicable only to CMS collector)") \ | |
| 1830 \ | |
| 1831 develop(bool, TraceCMSState, false, \ | |
| 1832 "Trace the state of the CMS collection") \ | |
| 1833 \ | |
| 1834 product(intx, RefDiscoveryPolicy, 0, \ | |
| 1835 "Whether reference-based(0) or referent-based(1)") \ | |
| 1836 \ | |
| 1837 product(bool, ParallelRefProcEnabled, false, \ | |
| 1838 "Enable parallel reference processing whenever possible") \ | |
| 1839 \ | |
| 1840 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
| 1841 "Enable balancing of reference processing queues") \ | |
| 1842 \ | |
| 1843 product(intx, CMSTriggerRatio, 80, \ | |
| 1844 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
| 1064 | 1845 "allocated before a CMS collection cycle commences") \ |
| 0 | 1846 \ |
|
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1847 product(intx, CMSTriggerPermRatio, 80, \ |
| 1064 | 1848 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ |
| 1849 "is allocated before a CMS collection cycle commences, that " \ | |
| 1850 "also collects the perm generation") \ | |
|
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1851 \ |
|
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|
1852 product(uintx, CMSBootstrapOccupancy, 50, \ |
| 0 | 1853 "Percentage CMS generation occupancy at which to " \ |
| 1064 | 1854 "initiate CMS collection for bootstrapping collection stats") \ |
| 0 | 1855 \ |
| 1856 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
| 1857 "Percentage CMS generation occupancy to start a CMS collection " \ | |
| 1064 | 1858 "cycle. A negative value means that CMSTriggerRatio is used") \ |
|
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1859 \ |
|
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1860 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
|
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1861 "Percentage of the (entire) heap occupancy to start a " \ |
|
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1862 "concurrent GC cycle. It us used by GCs that trigger a " \ |
|
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1863 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
|
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1864 "not just one of the generations (e.g., G1). A value of 0 " \ |
|
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1865 "denotes 'do constant GC cycles'.") \ |
|
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1866 \ |
|
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1867 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
| 1064 | 1868 "Percentage CMS perm generation occupancy to start a " \ |
| 1869 "CMScollection cycle. A negative value means that " \ | |
| 1870 "CMSTriggerPermRatio is used") \ | |
| 0 | 1871 \ |
| 1872 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
| 1873 "Only use occupancy as a crierion for starting a CMS collection") \ | |
| 1874 \ | |
|
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1875 product(intx, CMSIsTooFullPercentage, 98, \ |
| 1064 | 1876 "An absolute ceiling above which CMS will always consider the " \ |
| 1877 "perm gen ripe for collection") \ | |
|
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1878 \ |
| 0 | 1879 develop(bool, CMSTestInFreeList, false, \ |
| 1880 "Check if the coalesced range is already in the " \ | |
| 1064 | 1881 "free lists as claimed") \ |
| 0 | 1882 \ |
| 1883 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
| 1884 "Check that all the garbage collected was returned to the " \ | |
| 1885 "free lists.") \ | |
| 1886 \ | |
| 1887 notproduct(bool, ScavengeALot, false, \ | |
| 1888 "Force scavenge at every Nth exit from the runtime system " \ | |
| 1889 "(N=ScavengeALotInterval)") \ | |
| 1890 \ | |
| 1891 develop(bool, FullGCALot, false, \ | |
| 1892 "Force full gc at every Nth exit from the runtime system " \ | |
| 1893 "(N=FullGCALotInterval)") \ | |
| 1894 \ | |
| 1895 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
| 1896 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
| 1897 \ | |
|
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1898 product(bool, PrintPromotionFailure, false, \ |
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1899 "Print additional diagnostic information following " \ |
|
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1900 " promotion failure") \ |
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1901 \ |
| 0 | 1902 notproduct(bool, PromotionFailureALot, false, \ |
| 1903 "Use promotion failure handling on every youngest generation " \ | |
| 1904 "collection") \ | |
| 1905 \ | |
| 1906 develop(uintx, PromotionFailureALotCount, 1000, \ | |
| 1907 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
| 1908 "refill attempts (ParNew) or promotion attempts " \ | |
| 1909 "(other young collectors) ") \ | |
| 1910 \ | |
| 1911 develop(uintx, PromotionFailureALotInterval, 5, \ | |
| 1912 "Total collections between promotion failures alot") \ | |
| 1913 \ | |
|
1837
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1914 experimental(intx, WorkStealingSleepMillis, 1, \ |
| 0 | 1915 "Sleep time when sleep is used for yields") \ |
| 1916 \ | |
| 2430 | 1917 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
| 0 | 1918 "Number of yields before a sleep is done during workstealing") \ |
| 1919 \ | |
|
1837
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1920 experimental(uintx, WorkStealingHardSpins, 4096, \ |
|
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1921 "Number of iterations in a spin loop between checks on " \ |
|
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1922 "time out of hard spin") \ |
|
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1923 \ |
|
1837
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1924 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
|
546
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1925 "Ratio of hard spins to calls to yield") \ |
|
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1926 \ |
| 534 | 1927 product(uintx, PreserveMarkStackSize, 1024, \ |
| 1064 | 1928 "Size for stack used in promotion failure handling") \ |
| 0 | 1929 \ |
|
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1930 develop(uintx, ObjArrayMarkingStride, 512, \ |
|
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1931 "Number of ObjArray elements to push onto the marking stack" \ |
|
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1932 "before pushing a continuation entry") \ |
|
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1933 \ |
| 0 | 1934 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
| 1935 \ | |
| 1936 product_pd(bool, ResizeTLAB, \ | |
| 1937 "Dynamically resize tlab size for threads") \ | |
| 1938 \ | |
| 1939 product(bool, ZeroTLAB, false, \ | |
| 1940 "Zero out the newly created TLAB") \ | |
| 1941 \ | |
|
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1942 product(bool, FastTLABRefill, true, \ |
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1943 "Use fast TLAB refill code") \ |
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1944 \ |
| 0 | 1945 product(bool, PrintTLAB, false, \ |
| 1946 "Print various TLAB related information") \ | |
| 1947 \ | |
| 1948 product(bool, TLABStats, true, \ | |
| 1949 "Print various TLAB related information") \ | |
| 1950 \ | |
| 941 | 1951 product(bool, PrintRevisitStats, false, \ |
| 1952 "Print revisit (klass and MDO) stack related information") \ | |
| 1953 \ | |
|
2192
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1954 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
|
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1955 "Enable LowMemoryProtection")) \ |
|
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1956 \ |
| 0 | 1957 product_pd(bool, NeverActAsServerClassMachine, \ |
| 1958 "Never act like a server-class machine") \ | |
| 1959 \ | |
| 1960 product(bool, AlwaysActAsServerClassMachine, false, \ | |
| 1961 "Always act like a server-class machine") \ | |
| 1962 \ | |
| 1064 | 1963 product_pd(uint64_t, MaxRAM, \ |
| 1964 "Real memory size (in bytes) used to set maximum heap size") \ | |
| 1965 \ | |
| 1966 product(uintx, ErgoHeapSizeLimit, 0, \ | |
| 1967 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
| 1968 "MaxRAM / MaxRAMFraction") \ | |
| 1969 \ | |
| 1970 product(uintx, MaxRAMFraction, 4, \ | |
| 1971 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
| 1972 "size") \ | |
| 0 | 1973 \ |
| 1974 product(uintx, DefaultMaxRAMFraction, 4, \ | |
| 1064 | 1975 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
| 1976 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
| 1977 \ | |
| 1978 product(uintx, MinRAMFraction, 2, \ | |
| 1979 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
| 1980 "size on systems with small physical memory size") \ | |
| 1981 \ | |
| 1982 product(uintx, InitialRAMFraction, 64, \ | |
| 1983 "Fraction (1/n) of real memory used for initial heap size") \ | |
| 0 | 1984 \ |
| 1985 product(bool, UseAutoGCSelectPolicy, false, \ | |
| 1986 "Use automatic collection selection policy") \ | |
| 1987 \ | |
| 1988 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
| 1989 "Automatic GC selection pause threshhold in ms") \ | |
| 1990 \ | |
| 1991 product(bool, UseAdaptiveSizePolicy, true, \ | |
| 1992 "Use adaptive generation sizing policies") \ | |
| 1993 \ | |
| 1994 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
| 1995 "Use adaptive survivor sizing policies") \ | |
| 1996 \ | |
| 1997 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
| 1998 "Use adaptive young-old sizing policies at minor collections") \ | |
| 1999 \ | |
| 2000 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
| 2001 "Use adaptive young-old sizing policies at major collections") \ | |
| 2002 \ | |
| 2003 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
| 2004 "Use statistics from System.GC for adaptive size policy") \ | |
| 2005 \ | |
| 2006 product(bool, UseAdaptiveGCBoundary, false, \ | |
| 2007 "Allow young-old boundary to move") \ | |
| 2008 \ | |
| 2009 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
| 2010 "Trace young-old boundary moves") \ | |
| 2011 \ | |
| 2012 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
| 2013 "Resize the virtual spaces of the young or old generations") \ | |
| 2014 \ | |
| 2015 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
| 2016 "Policy for changeing generation size for throughput goals") \ | |
| 2017 \ | |
| 2018 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
| 2019 "Policy for changing generation size for pause goals") \ | |
| 2020 \ | |
| 2021 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
| 2022 "Adjust tenured generation to achive a minor pause goal") \ | |
| 2023 \ | |
| 2024 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
| 2025 "Adjust young generation to achive a major pause goal") \ | |
| 2026 \ | |
| 2027 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
| 2028 "Number of steps where heuristics is used before data is used") \ | |
| 2029 \ | |
| 2030 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
| 2031 "Number of collections before the adaptive sizing is started") \ | |
| 2032 \ | |
| 2033 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
| 1064 | 2034 "Collecton interval for printing information; zero => never") \ |
| 0 | 2035 \ |
| 2036 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
| 2037 "Use adaptive minimum footprint as a goal") \ | |
| 2038 \ | |
| 2039 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
| 2040 "Weight given to exponential resizing, between 0 and 100") \ | |
| 2041 \ | |
| 2042 product(uintx, AdaptiveTimeWeight, 25, \ | |
| 2043 "Weight given to time in adaptive policy, between 0 and 100") \ | |
| 2044 \ | |
| 2045 product(uintx, PausePadding, 1, \ | |
| 2046 "How much buffer to keep for pause time") \ | |
| 2047 \ | |
| 2048 product(uintx, PromotedPadding, 3, \ | |
| 2049 "How much buffer to keep for promotion failure") \ | |
| 2050 \ | |
| 2051 product(uintx, SurvivorPadding, 3, \ | |
| 2052 "How much buffer to keep for survivor overflow") \ | |
| 2053 \ | |
| 2054 product(uintx, AdaptivePermSizeWeight, 20, \ | |
| 2055 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
| 2056 \ | |
| 2057 product(uintx, PermGenPadding, 3, \ | |
| 2058 "How much buffer to keep for perm gen sizing") \ | |
| 2059 \ | |
| 2060 product(uintx, ThresholdTolerance, 10, \ | |
| 2061 "Allowed collection cost difference between generations") \ | |
| 2062 \ | |
| 2063 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
| 1064 | 2064 "If collection costs are within margin, reduce both by full " \ |
| 2065 "delta") \ | |
| 0 | 2066 \ |
| 2067 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
| 2068 "Adaptive size percentage change in young generation") \ | |
| 2069 \ | |
| 2070 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
| 2071 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
| 2072 \ | |
| 2073 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
| 2074 "Decay factor to YoungedGenerationSizeSupplement") \ | |
| 2075 \ | |
| 2076 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
| 2077 "Adaptive size percentage change in tenured generation") \ | |
| 2078 \ | |
| 2079 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
| 2080 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
| 2081 \ | |
| 2082 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
| 2083 "Decay factor to TenuredGenerationSizeIncrement") \ | |
| 2084 \ | |
| 1783 | 2085 product(uintx, MaxGCPauseMillis, max_uintx, \ |
| 751 | 2086 "Adaptive size policy maximum GC pause time goal in msec, " \ |
| 2087 "or (G1 Only) the max. GC time per MMU time slice") \ | |
| 2088 \ | |
|
1610
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|
2089 product(uintx, GCPauseIntervalMillis, 0, \ |
| 751 | 2090 "Time slice for MMU specification") \ |
| 0 | 2091 \ |
| 2092 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
| 2093 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
| 2094 \ | |
| 2095 product(uintx, GCTimeRatio, 99, \ | |
| 2096 "Adaptive size policy application time to GC time ratio") \ | |
| 2097 \ | |
| 2098 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
| 2099 "Adaptive size scale down factor for shrinking") \ | |
| 2100 \ | |
| 2101 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
| 2102 "Adaptive size decays the major cost for long major intervals") \ | |
| 2103 \ | |
| 2104 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
| 2105 "Time scale over which major costs decay") \ | |
| 2106 \ | |
| 2107 product(uintx, MinSurvivorRatio, 3, \ | |
| 2108 "Minimum ratio of young generation/survivor space size") \ | |
| 2109 \ | |
| 2110 product(uintx, InitialSurvivorRatio, 8, \ | |
| 2111 "Initial ratio of eden/survivor space size") \ | |
| 2112 \ | |
| 2113 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
| 2114 "Estimate of footprint other than Java Heap") \ | |
| 2115 \ | |
| 2116 product(bool, UseGCOverheadLimit, true, \ | |
| 2117 "Use policy to limit of proportion of time spent in GC " \ | |
| 2118 "before an OutOfMemory error is thrown") \ | |
| 2119 \ | |
| 2120 product(uintx, GCTimeLimit, 98, \ | |
| 2121 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
| 2122 "error is thrown (used with GCHeapFreeLimit)") \ | |
| 2123 \ | |
| 2124 product(uintx, GCHeapFreeLimit, 2, \ | |
| 2125 "Minimum percentage of free space after a full GC before an " \ | |
| 2126 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
| 2127 \ | |
| 2128 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
| 2129 "Number of consecutive collections before gc time limit fires") \ | |
| 2130 \ | |
| 2131 product(bool, PrintAdaptiveSizePolicy, false, \ | |
| 2132 "Print information about AdaptiveSizePolicy") \ | |
| 2133 \ | |
| 2134 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
| 2135 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
| 2136 \ | |
| 2137 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
| 2138 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
| 2139 \ | |
| 2140 product(intx, PrefetchFieldsAhead, -1, \ | |
| 2141 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
| 2142 \ | |
| 2143 develop(bool, UsePrefetchQueue, true, \ | |
| 2144 "Use the prefetch queue during PS promotion") \ | |
| 2145 \ | |
| 2146 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
| 2147 "Verify system before exiting") \ | |
| 2148 \ | |
| 2149 diagnostic(bool, VerifyBeforeGC, false, \ | |
| 2150 "Verify memory system before GC") \ | |
| 2151 \ | |
| 2152 diagnostic(bool, VerifyAfterGC, false, \ | |
| 2153 "Verify memory system after GC") \ | |
| 2154 \ | |
| 2155 diagnostic(bool, VerifyDuringGC, false, \ | |
| 2156 "Verify memory system during GC (between phases)") \ | |
| 2157 \ | |
| 390 | 2158 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
| 2159 "Enable parallel memory system verification") \ | |
| 2160 \ | |
| 1166 | 2161 diagnostic(bool, DeferInitialCardMark, false, \ |
| 2162 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
| 2163 "may arise from new_pre_store_barrier") \ | |
| 2164 \ | |
| 0 | 2165 diagnostic(bool, VerifyRememberedSets, false, \ |
| 2166 "Verify GC remembered sets") \ | |
| 2167 \ | |
| 2168 diagnostic(bool, VerifyObjectStartArray, true, \ | |
| 2169 "Verify GC object start array if verify before/after") \ | |
| 2170 \ | |
| 2171 product(bool, DisableExplicitGC, false, \ | |
| 2172 "Tells whether calling System.gc() does a full GC") \ | |
| 2173 \ | |
| 2174 notproduct(bool, CheckMemoryInitialization, false, \ | |
| 2175 "Checks memory initialization") \ | |
| 2176 \ | |
| 2177 product(bool, CollectGen0First, false, \ | |
| 2178 "Collect youngest generation before each full GC") \ | |
| 2179 \ | |
| 2180 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
| 2181 "Bind CMS Thread to CPU if possible") \ | |
| 2182 \ | |
| 2183 diagnostic(uintx, CPUForCMSThread, 0, \ | |
| 2184 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
| 2185 \ | |
| 2186 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
| 2187 "Bind GCTaskThreads to CPUs if possible") \ | |
| 2188 \ | |
| 2189 product(bool, UseGCTaskAffinity, false, \ | |
| 2190 "Use worker affinity when asking for GCTasks") \ | |
| 2191 \ | |
| 2192 product(uintx, ProcessDistributionStride, 4, \ | |
| 2193 "Stride through processors when distributing processes") \ | |
| 2194 \ | |
| 2195 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
| 2196 "number of times the coordinator GC thread will sleep while " \ | |
| 2197 "yielding before giving up and resuming GC") \ | |
| 2198 \ | |
| 2199 product(uintx, CMSYieldSleepCount, 0, \ | |
| 2200 "number of times a GC thread (minus the coordinator) " \ | |
| 2201 "will sleep while yielding before giving up and resuming GC") \ | |
| 2202 \ | |
| 2203 /* gc tracing */ \ | |
| 2204 manageable(bool, PrintGC, false, \ | |
| 2205 "Print message at garbage collect") \ | |
| 2206 \ | |
| 2207 manageable(bool, PrintGCDetails, false, \ | |
| 2208 "Print more details at garbage collect") \ | |
| 2209 \ | |
| 2210 manageable(bool, PrintGCDateStamps, false, \ | |
| 2211 "Print date stamps at garbage collect") \ | |
| 2212 \ | |
| 2213 manageable(bool, PrintGCTimeStamps, false, \ | |
| 2214 "Print timestamps at garbage collect") \ | |
| 2215 \ | |
| 2216 product(bool, PrintGCTaskTimeStamps, false, \ | |
| 2217 "Print timestamps for individual gc worker thread tasks") \ | |
| 2218 \ | |
| 2219 develop(intx, ConcGCYieldTimeout, 0, \ | |
| 2220 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
| 2221 \ | |
| 2222 notproduct(bool, TraceMarkSweep, false, \ | |
| 2223 "Trace mark sweep") \ | |
| 2224 \ | |
| 2225 product(bool, PrintReferenceGC, false, \ | |
| 2226 "Print times spent handling reference objects during GC " \ | |
| 2227 " (enabled only when PrintGCDetails)") \ | |
| 2228 \ | |
| 2229 develop(bool, TraceReferenceGC, false, \ | |
| 2230 "Trace handling of soft/weak/final/phantom references") \ | |
| 2231 \ | |
| 2232 develop(bool, TraceFinalizerRegistration, false, \ | |
| 2233 "Trace registration of final references") \ | |
| 2234 \ | |
| 2235 notproduct(bool, TraceScavenge, false, \ | |
| 2236 "Trace scavenge") \ | |
| 2237 \ | |
| 2238 product_rw(bool, TraceClassLoading, false, \ | |
| 2239 "Trace all classes loaded") \ | |
| 2240 \ | |
| 2241 product(bool, TraceClassLoadingPreorder, false, \ | |
| 2242 "Trace all classes loaded in order referenced (not loaded)") \ | |
| 2243 \ | |
| 2244 product_rw(bool, TraceClassUnloading, false, \ | |
| 2245 "Trace unloading of classes") \ | |
| 2246 \ | |
| 2247 product_rw(bool, TraceLoaderConstraints, false, \ | |
| 2248 "Trace loader constraints") \ | |
| 2249 \ | |
| 2250 product(bool, TraceGen0Time, false, \ | |
| 2251 "Trace accumulated time for Gen 0 collection") \ | |
| 2252 \ | |
| 2253 product(bool, TraceGen1Time, false, \ | |
| 2254 "Trace accumulated time for Gen 1 collection") \ | |
| 2255 \ | |
| 2256 product(bool, PrintTenuringDistribution, false, \ | |
| 2257 "Print tenuring age information") \ | |
| 2258 \ | |
| 2259 product_rw(bool, PrintHeapAtGC, false, \ | |
| 2260 "Print heap layout before and after each GC") \ | |
| 2261 \ | |
|
838
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diff
changeset
|
2262 product_rw(bool, PrintHeapAtGCExtended, false, \ |
|
0316eac49d5a
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diff
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|
2263 "Prints extended information about the layout of the heap " \ |
|
0316eac49d5a
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diff
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|
2264 "when -XX:+PrintHeapAtGC is set") \ |
|
0316eac49d5a
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779
diff
changeset
|
2265 \ |
| 0 | 2266 product(bool, PrintHeapAtSIGBREAK, true, \ |
| 2267 "Print heap layout in response to SIGBREAK") \ | |
| 2268 \ | |
|
615
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parents:
570
diff
changeset
|
2269 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
|
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570
diff
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|
2270 "Print a class histogram before any major stop-world GC") \ |
|
c6c601a0f2d6
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diff
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|
2271 \ |
|
c6c601a0f2d6
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parents:
570
diff
changeset
|
2272 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
|
c6c601a0f2d6
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diff
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|
2273 "Print a class histogram after any major stop-world GC") \ |
|
c6c601a0f2d6
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diff
changeset
|
2274 \ |
| 0 | 2275 manageable(bool, PrintClassHistogram, false, \ |
| 2276 "Print a histogram of class instances") \ | |
| 2277 \ | |
| 2278 develop(bool, TraceWorkGang, false, \ | |
| 2279 "Trace activities of work gangs") \ | |
| 2280 \ | |
| 2281 product(bool, TraceParallelOldGCTasks, false, \ | |
| 2282 "Trace multithreaded GC activity") \ | |
| 2283 \ | |
| 2284 develop(bool, TraceBlockOffsetTable, false, \ | |
| 2285 "Print BlockOffsetTable maps") \ | |
| 2286 \ | |
| 2287 develop(bool, TraceCardTableModRefBS, false, \ | |
| 2288 "Print CardTableModRefBS maps") \ | |
| 2289 \ | |
| 2290 develop(bool, TraceGCTaskManager, false, \ | |
| 2291 "Trace actions of the GC task manager") \ | |
| 2292 \ | |
| 2293 develop(bool, TraceGCTaskQueue, false, \ | |
| 2294 "Trace actions of the GC task queues") \ | |
| 2295 \ | |
| 2296 develop(bool, TraceGCTaskThread, false, \ | |
| 2297 "Trace actions of the GC task threads") \ | |
| 2298 \ | |
| 2299 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
| 2300 "Print the time taken by each parallel old gc phase." \ | |
| 2301 "PrintGCDetails must also be enabled.") \ | |
| 2302 \ | |
| 2303 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
| 2304 "Trace parallel old gc marking phase") \ | |
| 2305 \ | |
| 2306 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
| 2307 "Trace parallel old gc summary phase") \ | |
| 2308 \ | |
| 2309 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
| 2310 "Trace parallel old gc compaction phase") \ | |
| 2311 \ | |
| 2312 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
| 2313 "Trace parallel old gc dense prefix computation") \ | |
| 2314 \ | |
| 2315 develop(bool, IgnoreLibthreadGPFault, false, \ | |
| 2316 "Suppress workaround for libthread GP fault") \ | |
| 2317 \ | |
|
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|
2318 product(bool, PrintJNIGCStalls, false, \ |
|
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apetrusenko
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|
2319 "Print diagnostic message when GC is stalled" \ |
|
c0492d52d55b
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diff
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|
2320 "by JNI critical section") \ |
|
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|
2321 \ |
| 0 | 2322 /* JVMTI heap profiling */ \ |
| 2323 \ | |
| 2324 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
| 2325 "Trace JVMTI object tagging calls") \ | |
| 2326 \ | |
| 2327 diagnostic(bool, VerifyBeforeIteration, false, \ | |
| 2328 "Verify memory system before JVMTI iteration") \ | |
| 2329 \ | |
| 2330 /* compiler interface */ \ | |
| 2331 \ | |
| 2332 develop(bool, CIPrintCompilerName, false, \ | |
| 2333 "when CIPrint is active, print the name of the active compiler") \ | |
| 2334 \ | |
| 2335 develop(bool, CIPrintCompileQueue, false, \ | |
| 2336 "display the contents of the compile queue whenever a " \ | |
| 2337 "compilation is enqueued") \ | |
| 2338 \ | |
| 2339 develop(bool, CIPrintRequests, false, \ | |
| 2340 "display every request for compilation") \ | |
| 2341 \ | |
| 2342 product(bool, CITime, false, \ | |
| 2343 "collect timing information for compilation") \ | |
| 2344 \ | |
| 2345 develop(bool, CITimeEach, false, \ | |
| 2346 "display timing information after each successful compilation") \ | |
| 2347 \ | |
| 2348 develop(bool, CICountOSR, true, \ | |
| 2349 "use a separate counter when assigning ids to osr compilations") \ | |
| 2350 \ | |
| 2351 develop(bool, CICompileNatives, true, \ | |
| 2352 "compile native methods if supported by the compiler") \ | |
| 2353 \ | |
| 2354 develop_pd(bool, CICompileOSR, \ | |
| 2355 "compile on stack replacement methods if supported by the " \ | |
| 2356 "compiler") \ | |
| 2357 \ | |
| 2358 develop(bool, CIPrintMethodCodes, false, \ | |
| 2359 "print method bytecodes of the compiled code") \ | |
| 2360 \ | |
| 2361 develop(bool, CIPrintTypeFlow, false, \ | |
| 2362 "print the results of ciTypeFlow analysis") \ | |
| 2363 \ | |
| 2364 develop(bool, CITraceTypeFlow, false, \ | |
| 2365 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
| 2366 \ | |
| 2367 develop(intx, CICloneLoopTestLimit, 100, \ | |
| 2368 "size limit for blocks heuristically cloned in ciTypeFlow") \ | |
| 2369 \ | |
| 2403 | 2370 develop(intx, OSROnlyBCI, -1, \ |
| 2371 "OSR only at this bci. Negative values mean exclude that bci") \ | |
| 2372 \ | |
| 0 | 2373 /* temp diagnostics */ \ |
| 2374 \ | |
| 2375 diagnostic(bool, TraceRedundantCompiles, false, \ | |
| 2376 "Have compile broker print when a request already in the queue is"\ | |
| 2377 " requested again") \ | |
| 2378 \ | |
| 2379 diagnostic(bool, InitialCompileFast, false, \ | |
| 2380 "Initial compile at CompLevel_fast_compile") \ | |
| 2381 \ | |
| 2382 diagnostic(bool, InitialCompileReallyFast, false, \ | |
| 2383 "Initial compile at CompLevel_really_fast_compile (no profile)") \ | |
| 2384 \ | |
| 2385 diagnostic(bool, FullProfileOnReInterpret, true, \ | |
| 2386 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ | |
| 2387 \ | |
| 2388 /* compiler */ \ | |
| 2389 \ | |
| 2390 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
| 2391 "Number of compiler threads to run") \ | |
| 2392 \ | |
| 2393 product(intx, CompilationPolicyChoice, 0, \ | |
| 2394 "which compilation policy (0/1)") \ | |
| 2395 \ | |
| 2396 develop(bool, UseStackBanging, true, \ | |
| 2397 "use stack banging for stack overflow checks (required for " \ | |
| 2398 "proper StackOverflow handling; disable only to measure cost " \ | |
| 2399 "of stackbanging)") \ | |
| 2400 \ | |
| 2401 develop(bool, Use24BitFPMode, true, \ | |
| 2402 "Set 24-bit FPU mode on a per-compile basis ") \ | |
| 2403 \ | |
| 2404 develop(bool, Use24BitFP, true, \ | |
| 2405 "use FP instructions that produce 24-bit precise results") \ | |
| 2406 \ | |
| 2407 develop(bool, UseStrictFP, true, \ | |
| 2408 "use strict fp if modifier strictfp is set") \ | |
| 2409 \ | |
| 2410 develop(bool, GenerateSynchronizationCode, true, \ | |
| 2411 "generate locking/unlocking code for synchronized methods and " \ | |
| 2412 "monitors") \ | |
| 2413 \ | |
| 2414 develop(bool, GenerateCompilerNullChecks, true, \ | |
| 2415 "Generate explicit null checks for loads/stores/calls") \ | |
| 2416 \ | |
| 2417 develop(bool, GenerateRangeChecks, true, \ | |
| 2418 "Generate range checks for array accesses") \ | |
| 2419 \ | |
| 2420 develop_pd(bool, ImplicitNullChecks, \ | |
| 2421 "generate code for implicit null checks") \ | |
| 2422 \ | |
| 2423 product(bool, PrintSafepointStatistics, false, \ | |
| 2424 "print statistics about safepoint synchronization") \ | |
| 2425 \ | |
| 2426 product(intx, PrintSafepointStatisticsCount, 300, \ | |
| 2427 "total number of safepoint statistics collected " \ | |
| 2428 "before printing them out") \ | |
| 2429 \ | |
| 2430 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
| 2431 "print safepoint statistics only when safepoint takes" \ | |
| 2432 " more than PrintSafepointSatisticsTimeout in millis") \ | |
| 2433 \ | |
|
1321
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|
2434 product(bool, TraceSafepointCleanupTime, false, \ |
|
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|
2435 "print the break down of clean up tasks performed during" \ |
|
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diff
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|
2436 " safepoint") \ |
|
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|
2437 \ |
| 0 | 2438 develop(bool, InlineAccessors, true, \ |
| 2439 "inline accessor methods (get/set)") \ | |
| 2440 \ | |
| 2441 product(bool, Inline, true, \ | |
| 2442 "enable inlining") \ | |
| 2443 \ | |
| 2444 product(bool, ClipInlining, true, \ | |
| 2445 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
| 2446 \ | |
| 2447 develop(bool, UseCHA, true, \ | |
| 2448 "enable CHA") \ | |
| 2449 \ | |
| 2450 product(bool, UseTypeProfile, true, \ | |
| 2451 "Check interpreter profile for historically monomorphic calls") \ | |
| 2452 \ | |
| 2453 product(intx, TypeProfileMajorReceiverPercent, 90, \ | |
| 2454 "% of major receiver type to all profiled receivers") \ | |
| 2455 \ | |
| 2456 notproduct(bool, TimeCompiler, false, \ | |
| 2457 "time the compiler") \ | |
| 2458 \ | |
| 2459 notproduct(bool, TimeCompiler2, false, \ | |
| 2460 "detailed time the compiler (requires +TimeCompiler)") \ | |
| 2461 \ | |
| 2462 diagnostic(bool, PrintInlining, false, \ | |
| 2463 "prints inlining optimizations") \ | |
| 2464 \ | |
| 2465 diagnostic(bool, PrintIntrinsics, false, \ | |
| 2466 "prints attempted and successful inlining of intrinsics") \ | |
| 2467 \ | |
|
775
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|
2468 product(bool, UseCountLeadingZerosInstruction, false, \ |
|
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|
2469 "Use count leading zeros instruction") \ |
|
93c14e5562c4
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|
2470 \ |
|
643
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|
2471 product(bool, UsePopCountInstruction, false, \ |
|
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diff
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|
2472 "Use population count instruction") \ |
|
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|
2473 \ |
| 0 | 2474 diagnostic(ccstrlist, DisableIntrinsic, "", \ |
| 2475 "do not expand intrinsics whose (internal) names appear here") \ | |
| 2476 \ | |
| 2477 develop(bool, StressReflectiveCode, false, \ | |
| 2478 "Use inexact types at allocations, etc., to test reflection") \ | |
| 2479 \ | |
| 2480 develop(bool, EagerInitialization, false, \ | |
| 2481 "Eagerly initialize classes if possible") \ | |
| 2482 \ | |
| 2483 develop(bool, TraceMethodReplacement, false, \ | |
| 2484 "Print when methods are replaced do to recompilation") \ | |
| 2485 \ | |
| 2486 develop(bool, PrintMethodFlushing, false, \ | |
| 2487 "print the nmethods being flushed") \ | |
| 2488 \ | |
| 2489 notproduct(bool, LogMultipleMutexLocking, false, \ | |
| 2490 "log locking and unlocking of mutexes (only if multiple locks " \ | |
| 2491 "are held)") \ | |
| 2492 \ | |
| 2493 develop(bool, UseRelocIndex, false, \ | |
| 2494 "use an index to speed random access to relocations") \ | |
| 2495 \ | |
| 2496 develop(bool, StressCodeBuffers, false, \ | |
| 2497 "Exercise code buffer expansion and other rare state changes") \ | |
| 2498 \ | |
| 2499 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
| 2500 "Generate extra debugging info for non-safepoints in nmethods") \ | |
| 2501 \ | |
| 2502 diagnostic(bool, DebugInlinedCalls, true, \ | |
| 2503 "If false, restricts profiled locations to the root method only") \ | |
| 2504 \ | |
| 2505 product(bool, PrintVMOptions, trueInDebug, \ | |
| 1150 | 2506 "Print flags that appeared on the command line") \ |
| 0 | 2507 \ |
| 564 | 2508 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
| 2509 "Ignore unrecognized VM options") \ | |
| 2510 \ | |
| 1150 | 2511 product(bool, PrintCommandLineFlags, false, \ |
| 2512 "Print flags specified on command line or set by ergonomics") \ | |
| 2513 \ | |
| 2514 product(bool, PrintFlagsInitial, false, \ | |
| 2515 "Print all VM flags before argument processing and exit VM") \ | |
| 2516 \ | |
| 2517 product(bool, PrintFlagsFinal, false, \ | |
| 2518 "Print all VM flags after argument and ergonomic processing") \ | |
| 2519 \ | |
|
1768
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|
2520 notproduct(bool, PrintFlagsWithComments, false, \ |
|
6ee479178066
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diff
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|
2521 "Print all VM flags with default values and descriptions and exit")\ |
|
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|
2522 \ |
| 0 | 2523 diagnostic(bool, SerializeVMOutput, true, \ |
| 2524 "Use a mutex to serialize output to tty and hotspot.log") \ | |
| 2525 \ | |
| 2526 diagnostic(bool, DisplayVMOutput, true, \ | |
| 2527 "Display all VM output on the tty, independently of LogVMOutput") \ | |
| 2528 \ | |
| 2529 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
| 2530 "Save VM output to hotspot.log, or to LogFile") \ | |
| 2531 \ | |
| 2532 diagnostic(ccstr, LogFile, NULL, \ | |
| 2533 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
| 2534 \ | |
| 2535 product(ccstr, ErrorFile, NULL, \ | |
| 2536 "If an error occurs, save the error data to this file " \ | |
| 2537 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
| 2538 \ | |
| 2539 product(bool, DisplayVMOutputToStderr, false, \ | |
| 2540 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
| 2541 \ | |
| 2542 product(bool, DisplayVMOutputToStdout, false, \ | |
| 2543 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
| 2544 \ | |
| 2545 product(bool, UseHeavyMonitors, false, \ | |
| 2546 "use heavyweight instead of lightweight Java monitors") \ | |
| 2547 \ | |
| 2548 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ | |
| 2549 "print histogram of the symbol table") \ | |
| 2550 \ | |
| 2551 notproduct(bool, ExitVMOnVerifyError, false, \ | |
| 2552 "standard exit from VM if bytecode verify error " \ | |
| 2553 "(only in debug mode)") \ | |
| 2554 \ | |
| 2555 notproduct(ccstr, AbortVMOnException, NULL, \ | |
| 2556 "Call fatal if this exception is thrown. Example: " \ | |
| 2557 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
| 2558 \ | |
|
1684
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diff
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|
2559 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
|
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diff
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|
2560 "Call fatal if the exception pointed by AbortVMOnException " \ |
|
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diff
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|
2561 "has this message.") \ |
|
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|
2562 \ |
| 0 | 2563 develop(bool, DebugVtables, false, \ |
| 2564 "add debugging code to vtable dispatch") \ | |
| 2565 \ | |
| 2566 develop(bool, PrintVtables, false, \ | |
| 2567 "print vtables when printing klass") \ | |
| 2568 \ | |
| 2569 notproduct(bool, PrintVtableStats, false, \ | |
| 2570 "print vtables stats at end of run") \ | |
| 2571 \ | |
| 2572 develop(bool, TraceCreateZombies, false, \ | |
| 2573 "trace creation of zombie nmethods") \ | |
| 2574 \ | |
| 2575 notproduct(bool, IgnoreLockingAssertions, false, \ | |
| 2576 "disable locking assertions (for speed)") \ | |
| 2577 \ | |
| 2578 notproduct(bool, VerifyLoopOptimizations, false, \ | |
| 2579 "verify major loop optimizations") \ | |
| 2580 \ | |
| 2581 product(bool, RangeCheckElimination, true, \ | |
| 2582 "Split loop iterations to eliminate range checks") \ | |
| 2583 \ | |
| 2584 develop_pd(bool, UncommonNullCast, \ | |
| 2585 "track occurrences of null in casts; adjust compiler tactics") \ | |
| 2586 \ | |
| 2587 develop(bool, TypeProfileCasts, true, \ | |
| 2588 "treat casts like calls for purposes of type profiling") \ | |
| 2589 \ | |
| 2590 develop(bool, MonomorphicArrayCheck, true, \ | |
| 2591 "Uncommon-trap array store checks that require full type check") \ | |
| 2592 \ | |
|
1746
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diff
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|
2593 diagnostic(bool, ProfileDynamicTypes, true, \ |
|
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diff
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|
2594 "do extra type profiling and use it more aggressively") \ |
|
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diff
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|
2595 \ |
| 0 | 2596 develop(bool, DelayCompilationDuringStartup, true, \ |
| 2597 "Delay invoking the compiler until main application class is " \ | |
| 2598 "loaded") \ | |
| 2599 \ | |
| 2600 develop(bool, CompileTheWorld, false, \ | |
| 2601 "Compile all methods in all classes in bootstrap class path " \ | |
| 2602 "(stress test)") \ | |
| 2603 \ | |
| 2604 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
| 2605 "Preload all classes used by a class before start loading") \ | |
| 2606 \ | |
|
1188
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diff
changeset
|
2607 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
|
99af867dfa05
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diff
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|
2608 "Force a safepoint every n compiles so sweeper can keep up") \ |
|
99af867dfa05
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1179
diff
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|
2609 \ |
| 0 | 2610 develop(bool, TraceIterativeGVN, false, \ |
| 2611 "Print progress during Iterative Global Value Numbering") \ | |
| 2612 \ | |
| 2613 develop(bool, FillDelaySlots, true, \ | |
| 2614 "Fill delay slots (on SPARC only)") \ | |
| 2615 \ | |
| 2616 develop(bool, VerifyIterativeGVN, false, \ | |
| 2617 "Verify Def-Use modifications during sparse Iterative Global " \ | |
| 2618 "Value Numbering") \ | |
| 2619 \ | |
| 2620 notproduct(bool, TracePhaseCCP, false, \ | |
| 2621 "Print progress during Conditional Constant Propagation") \ | |
| 2622 \ | |
| 2623 develop(bool, TimeLivenessAnalysis, false, \ | |
| 2624 "Time computation of bytecode liveness analysis") \ | |
| 2625 \ | |
| 2626 develop(bool, TraceLivenessGen, false, \ | |
| 2627 "Trace the generation of liveness analysis information") \ | |
| 2628 \ | |
| 2629 notproduct(bool, TraceLivenessQuery, false, \ | |
| 2630 "Trace queries of liveness analysis information") \ | |
| 2631 \ | |
| 2632 notproduct(bool, CollectIndexSetStatistics, false, \ | |
| 2633 "Collect information about IndexSets") \ | |
| 2634 \ | |
| 2635 develop(bool, PrintDominators, false, \ | |
| 2636 "Print out dominator trees for GVN") \ | |
| 2637 \ | |
| 2638 develop(bool, UseLoopSafepoints, true, \ | |
| 2639 "Generate Safepoint nodes in every loop") \ | |
| 2640 \ | |
| 2641 notproduct(bool, TraceCISCSpill, false, \ | |
| 2642 "Trace allocators use of cisc spillable instructions") \ | |
| 2643 \ | |
| 2644 notproduct(bool, TraceSpilling, false, \ | |
| 2645 "Trace spilling") \ | |
| 2646 \ | |
| 2647 product(bool, SplitIfBlocks, true, \ | |
| 2648 "Clone compares and control flow through merge points to fold " \ | |
| 2649 "some branches") \ | |
| 2650 \ | |
| 2651 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
| 2652 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
| 2653 "Inline allocations larger than this in doublewords must go slow")\ | |
| 2654 \ | |
| 2655 product(bool, AggressiveOpts, false, \ | |
| 2656 "Enable aggressive optimizations - see arguments.cpp") \ | |
| 2657 \ | |
|
192
6d13fcb3663f
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174
diff
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|
2658 product(bool, UseStringCache, false, \ |
|
6d13fcb3663f
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174
diff
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|
2659 "Enable String cache capabilities on String.java") \ |
|
6d13fcb3663f
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174
diff
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|
2660 \ |
| 0 | 2661 /* statistics */ \ |
| 2662 develop(bool, CountCompiledCalls, false, \ | |
| 2663 "counts method invocations") \ | |
| 2664 \ | |
| 2665 notproduct(bool, CountRuntimeCalls, false, \ | |
| 2666 "counts VM runtime calls") \ | |
| 2667 \ | |
| 2668 develop(bool, CountJNICalls, false, \ | |
| 2669 "counts jni method invocations") \ | |
| 2670 \ | |
| 2671 notproduct(bool, CountJVMCalls, false, \ | |
| 2672 "counts jvm method invocations") \ | |
| 2673 \ | |
| 2674 notproduct(bool, CountRemovableExceptions, false, \ | |
| 2675 "count exceptions that could be replaced by branches due to " \ | |
| 2676 "inlining") \ | |
| 2677 \ | |
| 2678 notproduct(bool, ICMissHistogram, false, \ | |
| 2679 "produce histogram of IC misses") \ | |
| 2680 \ | |
| 2681 notproduct(bool, PrintClassStatistics, false, \ | |
| 2682 "prints class statistics at end of run") \ | |
| 2683 \ | |
| 2684 notproduct(bool, PrintMethodStatistics, false, \ | |
| 2685 "prints method statistics at end of run") \ | |
| 2686 \ | |
| 2687 /* interpreter */ \ | |
| 2688 develop(bool, ClearInterpreterLocals, false, \ | |
| 2689 "Always clear local variables of interpreter activations upon " \ | |
| 2690 "entry") \ | |
| 2691 \ | |
| 2692 product_pd(bool, RewriteBytecodes, \ | |
| 2693 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
| 2694 \ | |
| 2695 product_pd(bool, RewriteFrequentPairs, \ | |
| 2696 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
| 2697 \ | |
|
100
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76
diff
changeset
|
2698 diagnostic(bool, PrintInterpreter, false, \ |
| 0 | 2699 "Prints the generated interpreter code") \ |
| 2700 \ | |
| 2701 product(bool, UseInterpreter, true, \ | |
| 2702 "Use interpreter for non-compiled methods") \ | |
| 2703 \ | |
| 2704 develop(bool, UseFastSignatureHandlers, true, \ | |
| 2705 "Use fast signature handlers for native calls") \ | |
| 2706 \ | |
| 2707 develop(bool, UseV8InstrsOnly, false, \ | |
| 2708 "Use SPARC-V8 Compliant instruction subset") \ | |
| 2709 \ | |
| 2710 product(bool, UseNiagaraInstrs, false, \ | |
| 2711 "Use Niagara-efficient instruction subset") \ | |
| 2712 \ | |
| 2713 develop(bool, UseCASForSwap, false, \ | |
| 2714 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ | |
| 2715 \ | |
| 2716 product(bool, UseLoopCounter, true, \ | |
| 2717 "Increment invocation counter on backward branch") \ | |
| 2718 \ | |
| 2719 product(bool, UseFastEmptyMethods, true, \ | |
| 2720 "Use fast method entry code for empty methods") \ | |
| 2721 \ | |
| 2722 product(bool, UseFastAccessorMethods, true, \ | |
| 2723 "Use fast method entry code for accessor methods") \ | |
| 2724 \ | |
| 2725 product_pd(bool, UseOnStackReplacement, \ | |
| 2726 "Use on stack replacement, calls runtime if invoc. counter " \ | |
| 2727 "overflows in loop") \ | |
| 2728 \ | |
| 2729 notproduct(bool, TraceOnStackReplacement, false, \ | |
| 2730 "Trace on stack replacement") \ | |
| 2731 \ | |
| 2732 develop(bool, PoisonOSREntry, true, \ | |
| 2733 "Detect abnormal calls to OSR code") \ | |
| 2734 \ | |
| 2735 product_pd(bool, PreferInterpreterNativeStubs, \ | |
| 2736 "Use always interpreter stubs for native methods invoked via " \ | |
| 2737 "interpreter") \ | |
| 2738 \ | |
| 2739 develop(bool, CountBytecodes, false, \ | |
| 2740 "Count number of bytecodes executed") \ | |
| 2741 \ | |
| 2742 develop(bool, PrintBytecodeHistogram, false, \ | |
| 2743 "Print histogram of the executed bytecodes") \ | |
| 2744 \ | |
| 2745 develop(bool, PrintBytecodePairHistogram, false, \ | |
| 2746 "Print histogram of the executed bytecode pairs") \ | |
| 2747 \ | |
|
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|
2748 diagnostic(bool, PrintSignatureHandlers, false, \ |
| 0 | 2749 "Print code generated for native method signature handlers") \ |
| 2750 \ | |
| 2751 develop(bool, VerifyOops, false, \ | |
| 2752 "Do plausibility checks for oops") \ | |
| 2753 \ | |
| 2754 develop(bool, CheckUnhandledOops, false, \ | |
| 2755 "Check for unhandled oops in VM code") \ | |
| 2756 \ | |
| 2757 develop(bool, VerifyJNIFields, trueInDebug, \ | |
| 2758 "Verify jfieldIDs for instance fields") \ | |
| 2759 \ | |
| 2760 notproduct(bool, VerifyJNIEnvThread, false, \ | |
| 2761 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
| 2762 "from JNI") \ | |
| 2763 \ | |
| 2764 develop(bool, VerifyFPU, false, \ | |
| 2765 "Verify FPU state (check for NaN's, etc.)") \ | |
| 2766 \ | |
| 2767 develop(bool, VerifyThread, false, \ | |
| 2768 "Watch the thread register for corruption (SPARC only)") \ | |
| 2769 \ | |
| 2770 develop(bool, VerifyActivationFrameSize, false, \ | |
| 2771 "Verify that activation frame didn't become smaller than its " \ | |
| 2772 "minimal size") \ | |
| 2773 \ | |
| 2774 develop(bool, TraceFrequencyInlining, false, \ | |
| 2775 "Trace frequency based inlining") \ | |
| 2776 \ | |
| 2777 notproduct(bool, TraceTypeProfile, false, \ | |
| 2778 "Trace type profile") \ | |
| 2779 \ | |
| 2780 develop_pd(bool, InlineIntrinsics, \ | |
| 2781 "Inline intrinsics that can be statically resolved") \ | |
| 2782 \ | |
| 2783 product_pd(bool, ProfileInterpreter, \ | |
| 2784 "Profile at the bytecode level during interpretation") \ | |
| 2785 \ | |
| 2786 develop_pd(bool, ProfileTraps, \ | |
| 2787 "Profile deoptimization traps at the bytecode level") \ | |
| 2788 \ | |
| 2789 product(intx, ProfileMaturityPercentage, 20, \ | |
| 2790 "number of method invocations/branches (expressed as % of " \ | |
| 2791 "CompileThreshold) before using the method's profile") \ | |
| 2792 \ | |
| 2793 develop(bool, PrintMethodData, false, \ | |
| 2794 "Print the results of +ProfileInterpreter at end of run") \ | |
| 2795 \ | |
| 2796 develop(bool, VerifyDataPointer, trueInDebug, \ | |
| 2797 "Verify the method data pointer during interpreter profiling") \ | |
| 2798 \ | |
| 2799 develop(bool, VerifyCompiledCode, false, \ | |
| 2800 "Include miscellaneous runtime verifications in nmethod code; " \ | |
| 1064 | 2801 "default off because it disturbs nmethod size heuristics") \ |
| 0 | 2802 \ |
|
1119
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|
2803 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
|
547f81740344
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1064
diff
changeset
|
2804 "Manually make GC thread crash then dump java stack trace; " \ |
|
547f81740344
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diff
changeset
|
2805 "Test only") \ |
| 0 | 2806 \ |
| 2807 /* compilation */ \ | |
| 2808 product(bool, UseCompiler, true, \ | |
| 2809 "use compilation") \ | |
| 2810 \ | |
| 2811 develop(bool, TraceCompilationPolicy, false, \ | |
| 2812 "Trace compilation policy") \ | |
| 2813 \ | |
| 2814 develop(bool, TimeCompilationPolicy, false, \ | |
| 2815 "Time the compilation policy") \ | |
| 2816 \ | |
| 2817 product(bool, UseCounterDecay, true, \ | |
| 2818 "adjust recompilation counters") \ | |
| 2819 \ | |
| 2820 develop(intx, CounterHalfLifeTime, 30, \ | |
| 2821 "half-life time of invocation counters (in secs)") \ | |
| 2822 \ | |
| 2823 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
| 2824 "Min. ms. between invocation of CounterDecay") \ | |
| 2825 \ | |
| 2826 product(bool, AlwaysCompileLoopMethods, false, \ | |
| 2827 "when using recompilation, never interpret methods " \ | |
| 2828 "containing loops") \ | |
| 2829 \ | |
| 2830 product(bool, DontCompileHugeMethods, true, \ | |
| 2831 "don't compile methods > HugeMethodLimit") \ | |
| 2832 \ | |
| 2833 /* Bytecode escape analysis estimation. */ \ | |
| 2834 product(bool, EstimateArgEscape, true, \ | |
| 2835 "Analyze bytecodes to estimate escape state of arguments") \ | |
| 2836 \ | |
| 2837 product(intx, BCEATraceLevel, 0, \ | |
| 2838 "How much tracing to do of bytecode escape analysis estimates") \ | |
| 2839 \ | |
| 2840 product(intx, MaxBCEAEstimateLevel, 5, \ | |
| 2841 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
| 2842 \ | |
| 2843 product(intx, MaxBCEAEstimateSize, 150, \ | |
| 2844 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
| 2845 \ | |
| 2846 product(intx, AllocatePrefetchStyle, 1, \ | |
| 2847 "0 = no prefetch, " \ | |
| 2848 "1 = prefetch instructions for each allocation, " \ | |
|
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diff
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|
2849 "2 = use TLAB watermark to gate allocation prefetch, " \ |
|
9e321dcfa5b7
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1366
diff
changeset
|
2850 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
| 0 | 2851 \ |
| 2852 product(intx, AllocatePrefetchDistance, -1, \ | |
| 2853 "Distance to prefetch ahead of allocation pointer") \ | |
| 2854 \ | |
| 2855 product(intx, AllocatePrefetchLines, 1, \ | |
| 2856 "Number of lines to prefetch ahead of allocation pointer") \ | |
| 2857 \ | |
| 2858 product(intx, AllocatePrefetchStepSize, 16, \ | |
| 2859 "Step size in bytes of sequential prefetch instructions") \ | |
| 2860 \ | |
| 2861 product(intx, AllocatePrefetchInstr, 0, \ | |
| 2862 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
| 2863 \ | |
| 2864 product(intx, ReadPrefetchInstr, 0, \ | |
| 2865 "Prefetch instruction to prefetch ahead") \ | |
| 2866 \ | |
| 2867 /* deoptimization */ \ | |
| 2868 develop(bool, TraceDeoptimization, false, \ | |
| 2869 "Trace deoptimization") \ | |
| 2870 \ | |
| 2871 develop(bool, DebugDeoptimization, false, \ | |
| 2872 "Tracing various information while debugging deoptimization") \ | |
| 2873 \ | |
| 2874 product(intx, SelfDestructTimer, 0, \ | |
| 2875 "Will cause VM to terminate after a given time (in minutes) " \ | |
| 2876 "(0 means off)") \ | |
| 2877 \ | |
| 2878 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
| 2879 "Max. no. of lines in the stack trace for Java exceptions " \ | |
| 2880 "(0 means all)") \ | |
| 2881 \ | |
|
2192
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2177
diff
changeset
|
2882 NOT_EMBEDDED(develop(intx, GuaranteedSafepointInterval, 1000, \ |
| 0 | 2883 "Guarantee a safepoint (at least) every so many milliseconds " \ |
|
2192
b92c45f2bc75
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bobv
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2177
diff
changeset
|
2884 "(0 means none)")) \ |
|
b92c45f2bc75
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bobv
parents:
2177
diff
changeset
|
2885 \ |
|
b92c45f2bc75
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2177
diff
changeset
|
2886 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
|
b92c45f2bc75
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bobv
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2177
diff
changeset
|
2887 "Guarantee a safepoint (at least) every so many milliseconds " \ |
|
b92c45f2bc75
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bobv
parents:
2177
diff
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|
2888 "(0 means none)")) \ |
| 0 | 2889 \ |
| 2890 product(intx, SafepointTimeoutDelay, 10000, \ | |
| 2891 "Delay in milliseconds for option SafepointTimeout") \ | |
| 2892 \ | |
| 2893 product(intx, NmethodSweepFraction, 4, \ | |
| 2894 "Number of invocations of sweeper to cover all nmethods") \ | |
| 2895 \ | |
|
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parents:
1513
diff
changeset
|
2896 product(intx, NmethodSweepCheckInterval, 5, \ |
|
bfe29ec02863
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never
parents:
1513
diff
changeset
|
2897 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
|
bfe29ec02863
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never
parents:
1513
diff
changeset
|
2898 \ |
| 0 | 2899 notproduct(intx, MemProfilingInterval, 500, \ |
| 2900 "Time between each invocation of the MemProfiler") \ | |
| 2901 \ | |
| 2902 develop(intx, MallocCatchPtr, -1, \ | |
| 2903 "Hit breakpoint when mallocing/freeing this pointer") \ | |
| 2904 \ | |
| 2905 notproduct(intx, AssertRepeat, 1, \ | |
| 2906 "number of times to evaluate expression in assert " \ | |
| 2907 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
| 2908 \ | |
| 2909 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
| 2910 "List of assertions (file:line) to muzzle") \ | |
| 2911 \ | |
| 2912 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
| 2913 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
| 2914 "is used") \ | |
| 2915 \ | |
| 2916 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
| 2917 "Threshold for total handle allocation when " \ | |
| 2918 "+TraceHandleAllocation is used") \ | |
| 2919 \ | |
| 2920 develop(intx, StackPrintLimit, 100, \ | |
| 2921 "number of stack frames to print in VM-level stack dump") \ | |
| 2922 \ | |
| 2923 notproduct(intx, MaxElementPrintSize, 256, \ | |
| 2924 "maximum number of elements to print") \ | |
| 2925 \ | |
| 2926 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
| 2927 "maximum number of subklasses to print when printing klass") \ | |
| 2928 \ | |
|
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1150
diff
changeset
|
2929 product(intx, MaxInlineLevel, 9, \ |
| 0 | 2930 "maximum number of nested calls that are inlined") \ |
| 2931 \ | |
|
1157
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parents:
1150
diff
changeset
|
2932 product(intx, MaxRecursiveInlineLevel, 1, \ |
| 0 | 2933 "maximum number of nested recursive calls that are inlined") \ |
| 2934 \ | |
| 675 | 2935 product_pd(intx, InlineSmallCode, \ |
| 0 | 2936 "Only inline already compiled methods if their code size is " \ |
| 2937 "less than this") \ | |
| 2938 \ | |
| 2939 product(intx, MaxInlineSize, 35, \ | |
| 2940 "maximum bytecode size of a method to be inlined") \ | |
| 2941 \ | |
| 2942 product_pd(intx, FreqInlineSize, \ | |
| 2943 "maximum bytecode size of a frequent method to be inlined") \ | |
| 2944 \ | |
|
1157
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jrose
parents:
1150
diff
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|
2945 product(intx, MaxTrivialSize, 6, \ |
| 0 | 2946 "maximum bytecode size of a trivial method to be inlined") \ |
| 2947 \ | |
|
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1150
diff
changeset
|
2948 product(intx, MinInliningThreshold, 250, \ |
| 0 | 2949 "min. invocation count a method needs to have to be inlined") \ |
| 2950 \ | |
| 2951 develop(intx, AlignEntryCode, 4, \ | |
| 2952 "aligns entry code to specified value (in bytes)") \ | |
| 2953 \ | |
| 2954 develop(intx, MethodHistogramCutoff, 100, \ | |
| 2955 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
| 2956 \ | |
| 2957 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
| 2958 "# of interpreted methods to show in profile") \ | |
| 2959 \ | |
| 2960 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
| 2961 "# of compiled methods to show in profile") \ | |
| 2962 \ | |
| 2963 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
| 2964 "# of stub methods to show in profile") \ | |
| 2965 \ | |
| 2966 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
| 2967 "# of runtime stub nodes to show in profile") \ | |
| 2968 \ | |
| 2969 product(intx, ProfileIntervalsTicks, 100, \ | |
| 2970 "# of ticks between printing of interval profile " \ | |
| 2971 "(+ProfileIntervals)") \ | |
| 2972 \ | |
| 2973 notproduct(intx, ScavengeALotInterval, 1, \ | |
| 2974 "Interval between which scavenge will occur with +ScavengeALot") \ | |
| 2975 \ | |
| 2976 notproduct(intx, FullGCALotInterval, 1, \ | |
| 2977 "Interval between which full gc will occur with +FullGCALot") \ | |
| 2978 \ | |
| 2979 notproduct(intx, FullGCALotStart, 0, \ | |
| 2980 "For which invocation to start FullGCAlot") \ | |
| 2981 \ | |
| 2982 notproduct(intx, FullGCALotDummies, 32*K, \ | |
| 2983 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
| 2984 "to move") \ | |
| 2985 \ | |
| 2986 develop(intx, DontYieldALotInterval, 10, \ | |
| 2987 "Interval between which yields will be dropped (milliseconds)") \ | |
| 2988 \ | |
| 2989 develop(intx, MinSleepInterval, 1, \ | |
| 2990 "Minimum sleep() interval (milliseconds) when " \ | |
| 2991 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
| 2992 \ | |
| 2993 product(intx, EventLogLength, 2000, \ | |
| 2994 "maximum nof events in event log") \ | |
| 2995 \ | |
| 2996 develop(intx, ProfilerPCTickThreshold, 15, \ | |
| 2997 "Number of ticks in a PC buckets to be a hotspot") \ | |
| 2998 \ | |
| 2999 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
| 3000 "Number of exits until DeoptimizeALot kicks in") \ | |
| 3001 \ | |
| 3002 notproduct(intx, ZombieALotInterval, 5, \ | |
| 3003 "Number of exits until ZombieALot kicks in") \ | |
| 3004 \ | |
| 3005 develop(bool, StressNonEntrant, false, \ | |
| 3006 "Mark nmethods non-entrant at registration") \ | |
| 3007 \ | |
| 3008 diagnostic(intx, MallocVerifyInterval, 0, \ | |
| 3009 "if non-zero, verify C heap after every N calls to " \ | |
| 3010 "malloc/realloc/free") \ | |
| 3011 \ | |
| 3012 diagnostic(intx, MallocVerifyStart, 0, \ | |
| 3013 "if non-zero, start verifying C heap after Nth call to " \ | |
| 3014 "malloc/realloc/free") \ | |
| 3015 \ | |
| 1783 | 3016 product(intx, TypeProfileWidth, 2, \ |
| 0 | 3017 "number of receiver types to record in call/cast profile") \ |
| 3018 \ | |
| 3019 develop(intx, BciProfileWidth, 2, \ | |
| 3020 "number of return bci's to record in ret profile") \ | |
| 3021 \ | |
| 3022 product(intx, PerMethodRecompilationCutoff, 400, \ | |
| 3023 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
| 3024 \ | |
|
1206
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1202
diff
changeset
|
3025 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
| 0 | 3026 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
| 3027 \ | |
| 3028 product(intx, PerMethodTrapLimit, 100, \ | |
| 3029 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
| 3030 \ | |
| 3031 product(intx, PerBytecodeTrapLimit, 4, \ | |
| 3032 "Limit on traps (of one kind) at a particular BCI") \ | |
| 3033 \ | |
| 3034 develop(intx, FreqCountInvocations, 1, \ | |
| 3035 "Scaling factor for branch frequencies (deprecated)") \ | |
| 3036 \ | |
| 3037 develop(intx, InlineFrequencyRatio, 20, \ | |
| 3038 "Ratio of call site execution to caller method invocation") \ | |
| 3039 \ | |
| 3040 develop_pd(intx, InlineFrequencyCount, \ | |
| 3041 "Count of call site execution necessary to trigger frequent " \ | |
| 3042 "inlining") \ | |
| 3043 \ | |
| 3044 develop(intx, InlineThrowCount, 50, \ | |
| 3045 "Force inlining of interpreted methods that throw this often") \ | |
| 3046 \ | |
| 3047 develop(intx, InlineThrowMaxSize, 200, \ | |
| 3048 "Force inlining of throwing methods smaller than this") \ | |
| 3049 \ | |
| 3050 product(intx, AliasLevel, 3, \ | |
| 3051 "0 for no aliasing, 1 for oop/field/static/array split, " \ | |
| 3052 "2 for class split, 3 for unique instances") \ | |
| 3053 \ | |
| 3054 develop(bool, VerifyAliases, false, \ | |
| 3055 "perform extra checks on the results of alias analysis") \ | |
| 3056 \ | |
| 3057 develop(intx, ProfilerNodeSize, 1024, \ | |
| 3058 "Size in K to allocate for the Profile Nodes of each thread") \ | |
| 3059 \ | |
| 3060 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ | |
| 3061 "Number of times to spin wait on a v8 atomic operation lock") \ | |
| 3062 \ | |
| 3063 product(intx, ReadSpinIterations, 100, \ | |
| 3064 "Number of read attempts before a yield (spin inner loop)") \ | |
| 3065 \ | |
| 3066 product_pd(intx, PreInflateSpin, \ | |
| 3067 "Number of times to spin wait before inflation") \ | |
| 3068 \ | |
| 3069 product(intx, PreBlockSpin, 10, \ | |
| 3070 "Number of times to spin in an inflated lock before going to " \ | |
| 3071 "an OS lock") \ | |
| 3072 \ | |
| 3073 /* gc parameters */ \ | |
| 1064 | 3074 product(uintx, InitialHeapSize, 0, \ |
| 3075 "Initial heap size (in bytes); zero means OldSize + NewSize") \ | |
| 3076 \ | |
| 3077 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
| 3078 "Maximum heap size (in bytes)") \ | |
| 3079 \ | |
| 3080 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
| 3081 "Initial tenured generation size (in bytes)") \ | |
| 3082 \ | |
|
1287
8911d8c0596f
6923123: Hotspot refuses to start when -Xmx4m or -Xms4m is specified
phh
parents:
1211
diff
changeset
|
3083 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
| 1064 | 3084 "Initial new generation size (in bytes)") \ |
| 0 | 3085 \ |
| 3086 product(uintx, MaxNewSize, max_uintx, \ | |
| 1064 | 3087 "Maximum new generation size (in bytes), max_uintx means set " \ |
| 3088 "ergonomically") \ | |
| 0 | 3089 \ |
| 3090 product(uintx, PretenureSizeThreshold, 0, \ | |
| 1064 | 3091 "Maximum size in bytes of objects allocated in DefNew " \ |
| 3092 "generation; zero means no maximum") \ | |
| 3093 \ | |
| 3094 product(uintx, TLABSize, 0, \ | |
| 3095 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
| 0 | 3096 \ |
| 3097 product(uintx, MinTLABSize, 2*K, \ | |
| 3098 "Minimum allowed TLAB size (in bytes)") \ | |
| 3099 \ | |
| 3100 product(uintx, TLABAllocationWeight, 35, \ | |
| 3101 "Allocation averaging weight") \ | |
| 3102 \ | |
| 3103 product(uintx, TLABWasteTargetPercent, 1, \ | |
| 3104 "Percentage of Eden that can be wasted") \ | |
| 3105 \ | |
| 3106 product(uintx, TLABRefillWasteFraction, 64, \ | |
| 3107 "Max TLAB waste at a refill (internal fragmentation)") \ | |
| 3108 \ | |
| 3109 product(uintx, TLABWasteIncrement, 4, \ | |
| 3110 "Increment allowed waste at slow allocation") \ | |
| 3111 \ | |
| 1064 | 3112 product(intx, SurvivorRatio, 8, \ |
| 0 | 3113 "Ratio of eden/survivor space size") \ |
| 3114 \ | |
| 1064 | 3115 product(intx, NewRatio, 2, \ |
| 0 | 3116 "Ratio of new/old generation sizes") \ |
| 3117 \ | |
| 3118 product_pd(uintx, NewSizeThreadIncrease, \ | |
| 3119 "Additional size added to desired new generation size per " \ | |
| 3120 "non-daemon thread (in bytes)") \ | |
| 3121 \ | |
| 3122 product_pd(uintx, PermSize, \ | |
| 1064 | 3123 "Initial size of permanent generation (in bytes)") \ |
| 0 | 3124 \ |
| 3125 product_pd(uintx, MaxPermSize, \ | |
| 3126 "Maximum size of permanent generation (in bytes)") \ | |
| 3127 \ | |
| 3128 product(uintx, MinHeapFreeRatio, 40, \ | |
| 3129 "Min percentage of heap free after GC to avoid expansion") \ | |
| 3130 \ | |
| 3131 product(uintx, MaxHeapFreeRatio, 70, \ | |
| 3132 "Max percentage of heap free after GC to avoid shrinking") \ | |
| 3133 \ | |
| 3134 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
| 3135 "Number of milliseconds per MB of free space in the heap") \ | |
| 3136 \ | |
| 3137 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
| 3138 "Min change in heap space due to GC (in bytes)") \ | |
| 3139 \ | |
| 3140 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
| 3141 "Min expansion of permanent heap (in bytes)") \ | |
| 3142 \ | |
| 3143 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
| 3144 "Max expansion of permanent heap without full GC (in bytes)") \ | |
| 3145 \ | |
| 3146 product(intx, QueuedAllocationWarningCount, 0, \ | |
| 3147 "Number of times an allocation that queues behind a GC " \ | |
| 3148 "will retry before printing a warning") \ | |
| 3149 \ | |
| 3150 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
| 3151 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
| 3152 \ | |
| 3153 diagnostic(intx, VerifyGCLevel, 0, \ | |
| 3154 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
| 3155 \ | |
| 3156 develop(uintx, ExitAfterGCNum, 0, \ | |
| 3157 "If non-zero, exit after this GC.") \ | |
| 3158 \ | |
| 3159 product(intx, MaxTenuringThreshold, 15, \ | |
| 3160 "Maximum value for tenuring threshold") \ | |
| 3161 \ | |
| 3162 product(intx, InitialTenuringThreshold, 7, \ | |
| 3163 "Initial value for tenuring threshold") \ | |
| 3164 \ | |
| 3165 product(intx, TargetSurvivorRatio, 50, \ | |
| 3166 "Desired percentage of survivor space used after scavenge") \ | |
| 3167 \ | |
| 438 | 3168 product(uintx, MarkSweepDeadRatio, 5, \ |
| 0 | 3169 "Percentage (0-100) of the old gen allowed as dead wood." \ |
| 3170 "Serial mark sweep treats this as both the min and max value." \ | |
| 3171 "CMS uses this value only if it falls back to mark sweep." \ | |
| 3172 "Par compact uses a variable scale based on the density of the" \ | |
| 3173 "generation and treats this as the max value when the heap is" \ | |
| 3174 "either completely full or completely empty. Par compact also" \ | |
| 3175 "has a smaller default value; see arguments.cpp.") \ | |
| 3176 \ | |
| 438 | 3177 product(uintx, PermMarkSweepDeadRatio, 20, \ |
| 0 | 3178 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
| 3179 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
| 3180 \ | |
| 3181 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
| 3182 "How often should we fully compact the heap (ignoring the dead " \ | |
| 3183 "space parameters)") \ | |
| 3184 \ | |
| 3185 product(intx, PrintCMSStatistics, 0, \ | |
| 3186 "Statistics for CMS") \ | |
| 3187 \ | |
| 3188 product(bool, PrintCMSInitiationStatistics, false, \ | |
| 3189 "Statistics for initiating a CMS collection") \ | |
| 3190 \ | |
| 3191 product(intx, PrintFLSStatistics, 0, \ | |
| 3192 "Statistics for CMS' FreeListSpace") \ | |
| 3193 \ | |
| 3194 product(intx, PrintFLSCensus, 0, \ | |
| 3195 "Census for CMS' FreeListSpace") \ | |
| 3196 \ | |
| 3197 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
| 3198 "Delay in ms between expansion and allocation") \ | |
| 3199 \ | |
| 3200 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
| 3201 "(Unstable) Number of times to iterate in safepoint loop " \ | |
| 3202 " before blocking VM threads ") \ | |
| 3203 \ | |
| 3204 product(intx, DeferPollingPageLoopCount, -1, \ | |
| 3205 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
| 3206 "before changing safepoint polling page to RO ") \ | |
| 3207 \ | |
| 3208 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
| 3209 \ | |
| 3210 product(bool, PSChunkLargeArrays, true, \ | |
| 3211 "true: process large arrays in chunks") \ | |
| 3212 \ | |
| 3213 product(uintx, GCDrainStackTargetSize, 64, \ | |
| 3214 "how many entries we'll try to leave on the stack during " \ | |
| 3215 "parallel GC") \ | |
| 3216 \ | |
| 3217 /* stack parameters */ \ | |
| 3218 product_pd(intx, StackYellowPages, \ | |
| 3219 "Number of yellow zone (recoverable overflows) pages") \ | |
| 3220 \ | |
| 3221 product_pd(intx, StackRedPages, \ | |
| 3222 "Number of red zone (unrecoverable overflows) pages") \ | |
| 3223 \ | |
| 3224 product_pd(intx, StackShadowPages, \ | |
| 3225 "Number of shadow zone (for overflow checking) pages" \ | |
| 3226 " this should exceed the depth of the VM and native call stack") \ | |
| 3227 \ | |
| 3228 product_pd(intx, ThreadStackSize, \ | |
| 3229 "Thread Stack Size (in Kbytes)") \ | |
| 3230 \ | |
| 3231 product_pd(intx, VMThreadStackSize, \ | |
| 3232 "Non-Java Thread Stack Size (in Kbytes)") \ | |
| 3233 \ | |
| 3234 product_pd(intx, CompilerThreadStackSize, \ | |
| 3235 "Compiler Thread Stack Size (in Kbytes)") \ | |
| 3236 \ | |
| 3237 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
| 3238 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
| 3239 \ | |
| 3240 product(uintx, ThreadSafetyMargin, 50*M, \ | |
| 3241 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
| 3242 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
| 3243 "disable this feature") \ | |
| 3244 \ | |
| 3245 /* code cache parameters */ \ | |
| 3246 develop(uintx, CodeCacheSegmentSize, 64, \ | |
| 3247 "Code cache segment size (in bytes) - smallest unit of " \ | |
| 3248 "allocation") \ | |
| 3249 \ | |
| 3250 develop_pd(intx, CodeEntryAlignment, \ | |
| 3251 "Code entry alignment for generated code (in bytes)") \ | |
| 3252 \ | |
| 1365 | 3253 product_pd(intx, OptoLoopAlignment, \ |
| 3254 "Align inner loops to zero relative to this modulus") \ | |
| 3255 \ | |
| 0 | 3256 product_pd(uintx, InitialCodeCacheSize, \ |
| 3257 "Initial code cache size (in bytes)") \ | |
| 3258 \ | |
| 3259 product_pd(uintx, ReservedCodeCacheSize, \ | |
| 3260 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
| 3261 \ | |
| 3262 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
| 3263 "When less than X space left, we stop compiling.") \ | |
| 3264 \ | |
| 3265 product_pd(uintx, CodeCacheExpansionSize, \ | |
| 3266 "Code cache expansion size (in bytes)") \ | |
| 3267 \ | |
| 3268 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
| 3269 "Minimum number of segments in a code cache block.") \ | |
| 3270 \ | |
| 3271 notproduct(bool, ExitOnFullCodeCache, false, \ | |
| 3272 "Exit the VM if we fill the code cache.") \ | |
| 3273 \ | |
| 1202 | 3274 product(bool, UseCodeCacheFlushing, false, \ |
| 3275 "Attempt to clean the code cache before shutting off compiler") \ | |
| 3276 \ | |
| 3277 product(intx, MinCodeCacheFlushingInterval, 30, \ | |
| 3278 "Min number of seconds between code cache cleaning sessions") \ | |
| 3279 \ | |
| 3280 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ | |
| 3281 "When less than X space left, start code cache cleaning") \ | |
| 3282 \ | |
| 0 | 3283 /* interpreter debugging */ \ |
| 3284 develop(intx, BinarySwitchThreshold, 5, \ | |
| 3285 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
| 3286 "switch") \ | |
| 3287 \ | |
| 3288 develop(intx, StopInterpreterAt, 0, \ | |
| 3289 "Stops interpreter execution at specified bytecode number") \ | |
| 3290 \ | |
| 3291 develop(intx, TraceBytecodesAt, 0, \ | |
| 3292 "Traces bytecodes starting with specified bytecode number") \ | |
| 3293 \ | |
| 3294 /* compiler interface */ \ | |
| 3295 develop(intx, CIStart, 0, \ | |
| 3296 "the id of the first compilation to permit") \ | |
| 3297 \ | |
| 3298 develop(intx, CIStop, -1, \ | |
| 3299 "the id of the last compilation to permit") \ | |
| 3300 \ | |
| 3301 develop(intx, CIStartOSR, 0, \ | |
| 3302 "the id of the first osr compilation to permit " \ | |
| 3303 "(CICountOSR must be on)") \ | |
| 3304 \ | |
| 3305 develop(intx, CIStopOSR, -1, \ | |
| 3306 "the id of the last osr compilation to permit " \ | |
| 3307 "(CICountOSR must be on)") \ | |
| 3308 \ | |
| 3309 develop(intx, CIBreakAtOSR, -1, \ | |
| 3310 "id of osr compilation to break at") \ | |
| 3311 \ | |
| 3312 develop(intx, CIBreakAt, -1, \ | |
| 3313 "id of compilation to break at") \ | |
| 3314 \ | |
| 3315 product(ccstrlist, CompileOnly, "", \ | |
| 3316 "List of methods (pkg/class.name) to restrict compilation to") \ | |
| 3317 \ | |
| 3318 product(ccstr, CompileCommandFile, NULL, \ | |
| 3319 "Read compiler commands from this file [.hotspot_compiler]") \ | |
| 3320 \ | |
| 3321 product(ccstrlist, CompileCommand, "", \ | |
| 3322 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
| 3323 \ | |
| 3324 product(bool, CICompilerCountPerCPU, false, \ | |
| 3325 "1 compiler thread for log(N CPUs)") \ | |
| 3326 \ | |
| 3327 develop(intx, CIFireOOMAt, -1, \ | |
| 3328 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
| 3329 "(non-negative value throws OOM after this many CI accesses " \ | |
| 3330 "in each compile)") \ | |
| 3331 \ | |
| 3332 develop(intx, CIFireOOMAtDelay, -1, \ | |
| 3333 "Wait for this many CI accesses to occur in all compiles before " \ | |
| 3334 "beginning to throw OutOfMemoryErrors in each compile") \ | |
| 3335 \ | |
|
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|
3336 notproduct(bool, CIObjectFactoryVerify, false, \ |
|
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diff
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|
3337 "enable potentially expensive verification in ciObjectFactory") \ |
|
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|
3338 \ |
| 0 | 3339 /* Priorities */ \ |
| 3340 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
| 3341 \ | |
| 3342 product(intx, ThreadPriorityPolicy, 0, \ | |
| 3343 "0 : Normal. "\ | |
| 3344 " VM chooses priorities that are appropriate for normal "\ | |
| 3345 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
| 3346 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
| 3347 " map to lower native priority values. On Windows applications"\ | |
| 3348 " are allowed to use higher native priorities. However, with "\ | |
| 3349 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
| 3350 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
| 3351 " interfere with system threads. On Linux thread priorities "\ | |
| 3352 " are ignored because the OS does not support static priority "\ | |
| 3353 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
| 3354 " non-root, non-realtime applications. "\ | |
| 3355 "1 : Aggressive. "\ | |
| 3356 " Java thread priorities map over to the entire range of "\ | |
| 3357 " native thread priorities. Higher Java thread priorities map "\ | |
| 3358 " to higher native thread priorities. This policy should be "\ | |
| 3359 " used with care, as sometimes it can cause performance "\ | |
| 3360 " degradation in the application and/or the entire system. On "\ | |
| 3361 " Linux this policy requires root privilege.") \ | |
| 3362 \ | |
| 3363 product(bool, ThreadPriorityVerbose, false, \ | |
| 3364 "print priority changes") \ | |
| 3365 \ | |
| 3366 product(intx, DefaultThreadPriority, -1, \ | |
| 3367 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ | |
| 3368 \ | |
| 3369 product(intx, CompilerThreadPriority, -1, \ | |
| 3370 "what priority should compiler threads run at (-1 means no change)") \ | |
| 3371 \ | |
| 3372 product(intx, VMThreadPriority, -1, \ | |
| 3373 "what priority should VM threads run at (-1 means no change)") \ | |
| 3374 \ | |
| 3375 product(bool, CompilerThreadHintNoPreempt, true, \ | |
| 3376 "(Solaris only) Give compiler threads an extra quanta") \ | |
| 3377 \ | |
| 3378 product(bool, VMThreadHintNoPreempt, false, \ | |
| 3379 "(Solaris only) Give VM thread an extra quanta") \ | |
| 3380 \ | |
| 3381 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3382 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3383 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3384 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3385 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3386 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3387 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3388 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3389 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3390 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
| 3391 \ | |
| 3392 /* compiler debugging */ \ | |
| 3393 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
| 3394 "First class to consider when using +CompileTheWorld") \ | |
| 3395 \ | |
| 3396 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
| 3397 "Last class to consider when using +CompileTheWorld") \ | |
| 3398 \ | |
| 3399 develop(intx, NewCodeParameter, 0, \ | |
| 3400 "Testing Only: Create a dedicated integer parameter before " \ | |
| 3401 "putback") \ | |
| 3402 \ | |
| 3403 /* new oopmap storage allocation */ \ | |
| 3404 develop(intx, MinOopMapAllocation, 8, \ | |
| 3405 "Minimum number of OopMap entries in an OopMapSet") \ | |
| 3406 \ | |
| 3407 /* Background Compilation */ \ | |
| 3408 develop(intx, LongCompileThreshold, 50, \ | |
| 3409 "Used with +TraceLongCompiles") \ | |
| 3410 \ | |
| 3411 product(intx, StarvationMonitorInterval, 200, \ | |
| 3412 "Pause between each check in ms") \ | |
| 3413 \ | |
| 3414 /* recompilation */ \ | |
| 3415 product_pd(intx, CompileThreshold, \ | |
| 3416 "number of interpreted method invocations before (re-)compiling") \ | |
| 3417 \ | |
| 3418 product_pd(intx, BackEdgeThreshold, \ | |
| 3419 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
| 3420 \ | |
| 1783 | 3421 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
| 3422 "Interpreter (tier 0) invocation notification frequency.") \ | |
| 3423 \ | |
| 3424 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
| 3425 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
| 3426 \ | |
| 3427 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
| 3428 "C1 with MDO profiling (tier 3) invocation notification " \ | |
| 3429 "frequency.") \ | |
| 3430 \ | |
| 3431 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ | |
| 3432 "Interpreter (tier 0) invocation notification frequency.") \ | |
| 3433 \ | |
| 3434 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
| 3435 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
| 3436 \ | |
| 3437 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
| 3438 "C1 with MDO profiling (tier 3) invocation notification " \ | |
| 3439 "frequency.") \ | |
| 3440 \ | |
| 3441 product(intx, Tier2CompileThreshold, 0, \ | |
| 3442 "threshold at which tier 2 compilation is invoked") \ | |
| 3443 \ | |
| 3444 product(intx, Tier2BackEdgeThreshold, 0, \ | |
| 3445 "Back edge threshold at which tier 2 compilation is invoked") \ | |
| 3446 \ | |
| 3447 product(intx, Tier3InvocationThreshold, 200, \ | |
| 3448 "Compile if number of method invocations crosses this " \ | |
| 3449 "threshold") \ | |
| 3450 \ | |
| 3451 product(intx, Tier3MinInvocationThreshold, 100, \ | |
| 3452 "Minimum invocation to compile at tier 3") \ | |
| 3453 \ | |
| 3454 product(intx, Tier3CompileThreshold, 2000, \ | |
| 3455 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
| 3456 "minimum must be satisfied.") \ | |
| 3457 \ | |
| 3458 product(intx, Tier3BackEdgeThreshold, 7000, \ | |
| 3459 "Back edge threshold at which tier 3 OSR compilation is invoked") \ | |
| 3460 \ | |
| 3461 product(intx, Tier4InvocationThreshold, 5000, \ | |
| 3462 "Compile if number of method invocations crosses this " \ | |
| 3463 "threshold") \ | |
| 3464 \ | |
| 3465 product(intx, Tier4MinInvocationThreshold, 600, \ | |
| 3466 "Minimum invocation to compile at tier 4") \ | |
| 3467 \ | |
| 3468 product(intx, Tier4CompileThreshold, 15000, \ | |
| 3469 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
| 3470 "minimum must be satisfied.") \ | |
| 3471 \ | |
| 3472 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
| 3473 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
| 3474 \ | |
| 3475 product(intx, Tier3DelayOn, 5, \ | |
| 3476 "If C2 queue size grows over this amount per compiler thread " \ | |
| 3477 "stop compiling at tier 3 and start compiling at tier 2") \ | |
| 3478 \ | |
| 3479 product(intx, Tier3DelayOff, 2, \ | |
| 3480 "If C2 queue size is less than this amount per compiler thread " \ | |
| 3481 "allow methods compiled at tier 2 transition to tier 3") \ | |
| 3482 \ | |
| 3483 product(intx, Tier3LoadFeedback, 5, \ | |
| 3484 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
| 3485 "reaches this amount per compiler thread") \ | |
| 3486 \ | |
| 3487 product(intx, Tier4LoadFeedback, 3, \ | |
| 3488 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
| 3489 "reaches this amount per compiler thread") \ | |
| 3490 \ | |
| 3491 product(intx, TieredCompileTaskTimeout, 50, \ | |
| 3492 "Kill compile task if method was not used within " \ | |
| 3493 "given timeout in milliseconds") \ | |
| 3494 \ | |
| 3495 product(intx, TieredStopAtLevel, 4, \ | |
| 3496 "Stop at given compilation level") \ | |
| 3497 \ | |
| 3498 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
| 3499 "Start profiling in interpreter if the counters exceed tier 3" \ | |
| 3500 "thresholds by the specified percentage") \ | |
| 3501 \ | |
| 3502 product(intx, TieredRateUpdateMinTime, 1, \ | |
| 3503 "Minimum rate sampling interval (in milliseconds)") \ | |
| 3504 \ | |
| 3505 product(intx, TieredRateUpdateMaxTime, 25, \ | |
| 3506 "Maximum rate sampling interval (in milliseconds)") \ | |
| 0 | 3507 \ |
| 3508 product_pd(bool, TieredCompilation, \ | |
| 1783 | 3509 "Enable tiered compilation") \ |
| 3510 \ | |
| 3511 product(bool, PrintTieredEvents, false, \ | |
| 3512 "Print tiered events notifications") \ | |
| 0 | 3513 \ |
| 3514 product(bool, StressTieredRuntime, false, \ | |
| 3515 "Alternate client and server compiler on compile requests") \ | |
| 3516 \ | |
| 3517 product_pd(intx, OnStackReplacePercentage, \ | |
| 3518 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
| 3519 "of CompileThreshold) before (re-)compiling OSR code") \ | |
| 3520 \ | |
| 3521 product(intx, InterpreterProfilePercentage, 33, \ | |
| 3522 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
| 3523 "of CompileThreshold) before profiling in the interpreter") \ | |
| 3524 \ | |
| 3525 develop(intx, MaxRecompilationSearchLength, 10, \ | |
| 3526 "max. # frames to inspect searching for recompilee") \ | |
| 3527 \ | |
| 3528 develop(intx, MaxInterpretedSearchLength, 3, \ | |
| 3529 "max. # interp. frames to skip when searching for recompilee") \ | |
| 3530 \ | |
| 3531 develop(intx, DesiredMethodLimit, 8000, \ | |
| 3532 "desired max. method size (in bytecodes) after inlining") \ | |
| 3533 \ | |
| 3534 develop(intx, HugeMethodLimit, 8000, \ | |
| 3535 "don't compile methods larger than this if " \ | |
| 3536 "+DontCompileHugeMethods") \ | |
| 3537 \ | |
| 3538 /* New JDK 1.4 reflection implementation */ \ | |
| 3539 \ | |
| 3540 develop(bool, UseNewReflection, true, \ | |
| 3541 "Temporary flag for transition to reflection based on dynamic " \ | |
| 3542 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
| 3543 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
| 3544 "changes were needed") \ | |
| 3545 \ | |
| 3546 develop(bool, VerifyReflectionBytecodes, false, \ | |
| 3547 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
| 3548 "in situations like that described in 4486457 or for " \ | |
| 3549 "constructors generated for serialization, so can not be enabled "\ | |
| 3550 "in product.") \ | |
| 3551 \ | |
| 3552 product(bool, ReflectionWrapResolutionErrors, true, \ | |
| 3553 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
| 3554 "in InvocationTargetException. See 6531596") \ | |
| 3555 \ | |
| 3556 \ | |
| 3557 develop(intx, FastSuperclassLimit, 8, \ | |
| 3558 "Depth of hardwired instanceof accelerator array") \ | |
| 3559 \ | |
| 3560 /* Properties for Java libraries */ \ | |
| 3561 \ | |
| 3562 product(intx, MaxDirectMemorySize, -1, \ | |
| 3563 "Maximum total size of NIO direct-buffer allocations") \ | |
| 3564 \ | |
| 3565 /* temporary developer defined flags */ \ | |
| 3566 \ | |
| 3567 diagnostic(bool, UseNewCode, false, \ | |
| 3568 "Testing Only: Use the new version while testing") \ | |
| 3569 \ | |
| 3570 diagnostic(bool, UseNewCode2, false, \ | |
| 3571 "Testing Only: Use the new version while testing") \ | |
| 3572 \ | |
| 3573 diagnostic(bool, UseNewCode3, false, \ | |
| 3574 "Testing Only: Use the new version while testing") \ | |
| 3575 \ | |
| 3576 /* flags for performance data collection */ \ | |
| 3577 \ | |
|
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3578 NOT_EMBEDDED(product(bool, UsePerfData, true, \ |
| 0 | 3579 "Flag to disable jvmstat instrumentation for performance testing" \ |
|
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3580 "and problem isolation purposes.")) \ |
|
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|
3581 \ |
|
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|
3582 EMBEDDED_ONLY(product(bool, UsePerfData, false, \ |
|
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|
3583 "Flag to disable jvmstat instrumentation for performance testing" \ |
|
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|
3584 "and problem isolation purposes.")) \ |
| 0 | 3585 \ |
| 3586 product(bool, PerfDataSaveToFile, false, \ | |
| 3587 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
| 3588 \ | |
| 3589 product(ccstr, PerfDataSaveFile, NULL, \ | |
| 3590 "Save PerfData memory to the specified absolute pathname," \ | |
| 3591 "%p in the file name if present will be replaced by pid") \ | |
| 3592 \ | |
| 3593 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
| 3594 "Data sampling interval in milliseconds") \ | |
| 3595 \ | |
| 3596 develop(bool, PerfTraceDataCreation, false, \ | |
| 3597 "Trace creation of Performance Data Entries") \ | |
| 3598 \ | |
| 3599 develop(bool, PerfTraceMemOps, false, \ | |
| 3600 "Trace PerfMemory create/attach/detach calls") \ | |
| 3601 \ | |
| 3602 product(bool, PerfDisableSharedMem, false, \ | |
| 3603 "Store performance data in standard memory") \ | |
| 3604 \ | |
| 3605 product(intx, PerfDataMemorySize, 32*K, \ | |
| 3606 "Size of performance data memory region. Will be rounded " \ | |
| 3607 "up to a multiple of the native os page size.") \ | |
| 3608 \ | |
| 3609 product(intx, PerfMaxStringConstLength, 1024, \ | |
| 3610 "Maximum PerfStringConstant string length before truncation") \ | |
| 3611 \ | |
| 3612 product(bool, PerfAllowAtExitRegistration, false, \ | |
| 3613 "Allow registration of atexit() methods") \ | |
| 3614 \ | |
| 3615 product(bool, PerfBypassFileSystemCheck, false, \ | |
| 3616 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
| 3617 \ | |
| 3618 product(intx, UnguardOnExecutionViolation, 0, \ | |
| 3619 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
| 3620 "0=off, 1=conservative, 2=aggressive") \ | |
| 3621 \ | |
| 3622 /* Serviceability Support */ \ | |
| 3623 \ | |
| 3624 product(bool, ManagementServer, false, \ | |
| 3625 "Create JMX Management Server") \ | |
| 3626 \ | |
| 3627 product(bool, DisableAttachMechanism, false, \ | |
| 3628 "Disable mechanism that allows tools to attach to this VM") \ | |
| 3629 \ | |
| 3630 product(bool, StartAttachListener, false, \ | |
| 3631 "Always start Attach Listener at VM startup") \ | |
| 3632 \ | |
| 3633 manageable(bool, PrintConcurrentLocks, false, \ | |
| 3634 "Print java.util.concurrent locks in thread dump") \ | |
| 3635 \ | |
|
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3636 product(bool, TransmitErrorReport, false, \ |
|
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3637 "Enable error report transmission on erroneous termination") \ |
|
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|
3638 \ |
|
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|
3639 product(ccstr, ErrorReportServer, NULL, \ |
|
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3640 "Override built-in error report server address") \ |
|
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|
3641 \ |
| 0 | 3642 /* Shared spaces */ \ |
| 3643 \ | |
| 3644 product(bool, UseSharedSpaces, true, \ | |
| 3645 "Use shared spaces in the permanent generation") \ | |
| 3646 \ | |
| 3647 product(bool, RequireSharedSpaces, false, \ | |
| 3648 "Require shared spaces in the permanent generation") \ | |
| 3649 \ | |
| 3650 product(bool, DumpSharedSpaces, false, \ | |
| 3651 "Special mode: JVM reads a class list, loads classes, builds " \ | |
| 3652 "shared spaces, and dumps the shared spaces to a file to be " \ | |
| 3653 "used in future JVM runs.") \ | |
| 3654 \ | |
| 3655 product(bool, PrintSharedSpaces, false, \ | |
| 3656 "Print usage of shared spaces") \ | |
| 3657 \ | |
| 3658 product(uintx, SharedDummyBlockSize, 512*M, \ | |
| 3659 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
| 3660 \ | |
| 1875 | 3661 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \ |
| 0 | 3662 "Size of read-write space in permanent generation (in bytes)") \ |
| 3663 \ | |
|
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|
3664 product(uintx, SharedReadOnlySize, 10*M, \ |
| 0 | 3665 "Size of read-only space in permanent generation (in bytes)") \ |
| 3666 \ | |
|
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|
3667 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M), \ |
| 0 | 3668 "Size of the shared data area adjacent to the heap (in bytes)") \ |
| 3669 \ | |
| 3670 product(uintx, SharedMiscCodeSize, 4*M, \ | |
| 3671 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
| 3672 \ | |
| 3673 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
| 3674 "At dump time, order shared objects to achieve better " \ | |
| 3675 "cold startup time.") \ | |
| 3676 \ | |
| 3677 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
| 3678 "Reordering policy for SharedOptimizeColdStart " \ | |
| 3679 "0=favor classload-time locality, 1=balanced, " \ | |
| 3680 "2=favor runtime locality") \ | |
| 3681 \ | |
| 3682 diagnostic(bool, SharedSkipVerify, false, \ | |
| 3683 "Skip assert() and verify() which page-in unwanted shared " \ | |
| 3684 "objects. ") \ | |
| 3685 \ | |
|
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|
3686 diagnostic(bool, EnableInvokeDynamic, true, \ |
|
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3687 "support JSR 292 (method handles, invokedynamic, " \ |
|
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3688 "anonymous classes") \ |
|
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3689 \ |
|
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3690 product(bool, AnonymousClasses, false, \ |
|
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3691 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \ |
|
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3692 \ |
|
905
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3693 experimental(bool, EnableMethodHandles, false, \ |
|
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3694 "support method handles (deprecated)") \ |
| 710 | 3695 \ |
| 3696 diagnostic(intx, MethodHandlePushLimit, 3, \ | |
| 3697 "number of additional stack slots a method handle may push") \ | |
| 3698 \ | |
| 3699 develop(bool, TraceMethodHandles, false, \ | |
| 3700 "trace internal method handle operations") \ | |
| 3701 \ | |
| 3702 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
| 3703 "perform extra checks when constructing method handles") \ | |
| 3704 \ | |
| 3705 diagnostic(bool, OptimizeMethodHandles, true, \ | |
| 3706 "when constructing method handles, try to improve them") \ | |
| 3707 \ | |
|
1173
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3708 experimental(bool, TrustFinalNonStaticFields, false, \ |
|
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3709 "trust final non-static declarations for constant folding") \ |
|
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3710 \ |
| 2460 | 3711 experimental(bool, AllowInvokeGeneric, true, \ |
|
2356
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3712 "accept MethodHandle.invoke and MethodHandle.invokeGeneric " \ |
|
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3713 "as equivalent methods") \ |
|
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3714 \ |
|
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3715 develop(bool, TraceInvokeDynamic, false, \ |
|
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3716 "trace internal invoke dynamic operations") \ |
|
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3717 \ |
| 0 | 3718 diagnostic(bool, PauseAtStartup, false, \ |
| 3719 "Causes the VM to pause at startup time and wait for the pause " \ | |
| 3720 "file to be removed (default: ./vm.paused.<pid>)") \ | |
| 3721 \ | |
| 3722 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
| 3723 "The file to create and for whose removal to await when pausing " \ | |
| 3724 "at startup. (default: ./vm.paused.<pid>)") \ | |
| 3725 \ | |
|
2302
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3726 diagnostic(bool, PauseAtExit, false, \ |
|
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3727 "Pause and wait for keypress on exit if a debugger is attached") \ |
|
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3728 \ |
| 0 | 3729 product(bool, ExtendedDTraceProbes, false, \ |
| 3730 "Enable performance-impacting dtrace probes") \ | |
| 3731 \ | |
| 3732 product(bool, DTraceMethodProbes, false, \ | |
| 3733 "Enable dtrace probes for method-entry and method-exit") \ | |
| 3734 \ | |
| 3735 product(bool, DTraceAllocProbes, false, \ | |
| 3736 "Enable dtrace probes for object allocation") \ | |
| 3737 \ | |
| 3738 product(bool, DTraceMonitorProbes, false, \ | |
| 3739 "Enable dtrace probes for monitor events") \ | |
| 3740 \ | |
| 3741 product(bool, RelaxAccessControlCheck, false, \ | |
| 3742 "Relax the access control checks in the verifier") \ | |
| 3743 \ | |
|
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3744 diagnostic(bool, PrintDTraceDOF, false, \ |
|
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3745 "Print the DTrace DOF passed to the system for JSDT probes") \ |
|
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3746 \ |
| 2378 | 3747 product(uintx, StringTableSize, 1009, \ |
| 3748 "Number of buckets in the interned String table") \ | |
| 3749 \ | |
|
449
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|
3750 product(bool, UseVMInterruptibleIO, false, \ |
| 0 | 3751 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
|
449
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3752 "EINTR for I/O operations results in OS_INTRPT. The default value"\ |
|
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3753 " of this flag is true for JDK 6 and earliers") |
| 0 | 3754 |
| 3755 /* | |
| 3756 * Macros for factoring of globals | |
| 3757 */ | |
| 3758 | |
| 3759 // Interface macros | |
| 3760 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
| 3761 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
| 3762 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
|
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3763 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
| 0 | 3764 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
| 3765 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
| 3766 #ifdef PRODUCT | |
| 3767 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
| 3768 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
| 3769 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
| 3770 #else | |
| 3771 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
| 3772 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
| 3773 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
| 3774 #endif | |
|
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3775 // Special LP64 flags, product only needed for now. |
|
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3776 #ifdef _LP64 |
|
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3777 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
|
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3778 #else |
|
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3779 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; |
|
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3780 #endif // _LP64 |
| 0 | 3781 |
| 3782 // Implementation macros | |
| 3783 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
| 3784 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
| 3785 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
|
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3786 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
| 0 | 3787 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
| 3788 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
| 3789 #ifdef PRODUCT | |
| 3790 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
| 3791 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
| 3792 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
| 3793 #else | |
| 3794 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
| 3795 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
| 3796 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
| 3797 #endif | |
|
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3798 #ifdef _LP64 |
|
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3799 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
|
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3800 #else |
|
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|
3801 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
|
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3802 #endif // _LP64 |
| 0 | 3803 |
|
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|
3804 RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG, DECLARE_LP64_PRODUCT_FLAG) |
| 0 | 3805 |
| 3806 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
| 1972 | 3807 |
| 3808 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |