Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/globals.hpp @ 2250:f7de3327c683
7017124: Fix some VM stats to avoid 32-bit overflow
Summary: Added new method inc_stat_counter() to increment long statistic values and use atomic long load and store.
Reviewed-by: dholmes, jrose, phh, never
| author | kvn |
|---|---|
| date | Mon, 07 Feb 2011 10:34:39 -0800 |
| parents | 3582bf76420e |
| children | 850b2295a494 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2250 | 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 | |
| 38 #ifdef TARGET_OS_FAMILY_linux | |
| 39 # include "globals_linux.hpp" | |
| 40 #endif | |
| 41 #ifdef TARGET_OS_FAMILY_solaris | |
| 42 # include "globals_solaris.hpp" | |
| 43 #endif | |
| 44 #ifdef TARGET_OS_FAMILY_windows | |
| 45 # include "globals_windows.hpp" | |
| 46 #endif | |
| 47 #ifdef TARGET_OS_ARCH_linux_x86 | |
| 48 # include "globals_linux_x86.hpp" | |
| 49 #endif | |
| 50 #ifdef TARGET_OS_ARCH_linux_sparc | |
| 51 # include "globals_linux_sparc.hpp" | |
| 52 #endif | |
| 53 #ifdef TARGET_OS_ARCH_linux_zero | |
| 54 # include "globals_linux_zero.hpp" | |
| 55 #endif | |
| 56 #ifdef TARGET_OS_ARCH_solaris_x86 | |
| 57 # include "globals_solaris_x86.hpp" | |
| 58 #endif | |
| 59 #ifdef TARGET_OS_ARCH_solaris_sparc | |
| 60 # include "globals_solaris_sparc.hpp" | |
| 61 #endif | |
| 62 #ifdef TARGET_OS_ARCH_windows_x86 | |
| 63 # include "globals_windows_x86.hpp" | |
| 64 #endif | |
| 65 #ifdef COMPILER1 | |
| 66 #ifdef TARGET_ARCH_x86 | |
| 67 # include "c1_globals_x86.hpp" | |
| 68 #endif | |
| 69 #ifdef TARGET_ARCH_sparc | |
| 70 # include "c1_globals_sparc.hpp" | |
| 71 #endif | |
| 72 #ifdef TARGET_OS_FAMILY_linux | |
| 73 # include "c1_globals_linux.hpp" | |
| 74 #endif | |
| 75 #ifdef TARGET_OS_FAMILY_solaris | |
| 76 # include "c1_globals_solaris.hpp" | |
| 77 #endif | |
| 78 #ifdef TARGET_OS_FAMILY_windows | |
| 79 # include "c1_globals_windows.hpp" | |
| 80 #endif | |
| 81 #endif | |
| 82 #ifdef COMPILER2 | |
| 83 #ifdef TARGET_ARCH_x86 | |
| 84 # include "c2_globals_x86.hpp" | |
| 85 #endif | |
| 86 #ifdef TARGET_ARCH_sparc | |
| 87 # include "c2_globals_sparc.hpp" | |
| 88 #endif | |
| 89 #ifdef TARGET_OS_FAMILY_linux | |
| 90 # include "c2_globals_linux.hpp" | |
| 91 #endif | |
| 92 #ifdef TARGET_OS_FAMILY_solaris | |
| 93 # include "c2_globals_solaris.hpp" | |
| 94 #endif | |
| 95 #ifdef TARGET_OS_FAMILY_windows | |
| 96 # include "c2_globals_windows.hpp" | |
| 97 #endif | |
| 98 #endif | |
| 99 #ifdef SHARK | |
| 100 #ifdef TARGET_ARCH_zero | |
| 101 # include "shark_globals_zero.hpp" | |
| 102 #endif | |
| 103 #endif | |
| 104 | |
| 1692 | 105 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) |
| 0 | 106 define_pd_global(bool, BackgroundCompilation, false); |
| 107 define_pd_global(bool, UseTLAB, false); | |
| 108 define_pd_global(bool, CICompileOSR, false); | |
| 109 define_pd_global(bool, UseTypeProfile, false); | |
| 110 define_pd_global(bool, UseOnStackReplacement, false); | |
| 111 define_pd_global(bool, InlineIntrinsics, false); | |
| 112 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
| 113 define_pd_global(bool, ProfileInterpreter, false); | |
| 114 define_pd_global(bool, ProfileTraps, false); | |
| 115 define_pd_global(bool, TieredCompilation, false); | |
| 116 | |
| 117 define_pd_global(intx, CompileThreshold, 0); | |
| 118 define_pd_global(intx, BackEdgeThreshold, 0); | |
| 119 | |
| 120 define_pd_global(intx, OnStackReplacePercentage, 0); | |
| 121 define_pd_global(bool, ResizeTLAB, false); | |
| 122 define_pd_global(intx, FreqInlineSize, 0); | |
| 1064 | 123 define_pd_global(intx, InlineSmallCode, 0); |
| 0 | 124 define_pd_global(intx, NewSizeThreadIncrease, 4*K); |
| 125 define_pd_global(intx, InlineClassNatives, true); | |
| 126 define_pd_global(intx, InlineUnsafeOps, true); | |
| 127 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
| 128 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
| 129 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
| 130 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
| 131 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); | |
| 132 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); | |
| 133 define_pd_global(bool, NeverActAsServerClassMachine, true); | |
| 1064 | 134 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
| 0 | 135 #define CI_COMPILER_COUNT 0 |
| 136 #else | |
| 137 | |
| 138 #ifdef COMPILER2 | |
| 139 #define CI_COMPILER_COUNT 2 | |
| 140 #else | |
| 141 #define CI_COMPILER_COUNT 1 | |
| 142 #endif // COMPILER2 | |
| 143 | |
| 144 #endif // no compilers | |
| 145 | |
| 146 | |
| 147 // string type aliases used only in this file | |
| 148 typedef const char* ccstr; | |
| 149 typedef const char* ccstrlist; // represents string arguments which accumulate | |
| 150 | |
| 151 enum FlagValueOrigin { | |
| 152 DEFAULT = 0, | |
| 153 COMMAND_LINE = 1, | |
| 154 ENVIRON_VAR = 2, | |
| 155 CONFIG_FILE = 3, | |
| 156 MANAGEMENT = 4, | |
| 157 ERGONOMIC = 5, | |
| 158 ATTACH_ON_DEMAND = 6, | |
| 159 INTERNAL = 99 | |
| 160 }; | |
| 161 | |
| 162 struct Flag { | |
| 163 const char *type; | |
| 164 const char *name; | |
| 165 void* addr; | |
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166 |
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167 NOT_PRODUCT(const char *doc;) |
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168 |
| 0 | 169 const char *kind; |
| 170 FlagValueOrigin origin; | |
| 171 | |
| 172 // points to all Flags static array | |
| 173 static Flag *flags; | |
| 174 | |
| 175 // number of flags | |
| 176 static size_t numFlags; | |
| 177 | |
| 178 static Flag* find_flag(char* name, size_t length); | |
| 179 | |
| 180 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
| 181 bool get_bool() const { return *((bool*) addr); } | |
| 182 void set_bool(bool value) { *((bool*) addr) = value; } | |
| 183 | |
| 184 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
| 185 intx get_intx() const { return *((intx*) addr); } | |
| 186 void set_intx(intx value) { *((intx*) addr) = value; } | |
| 187 | |
| 188 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
| 189 uintx get_uintx() const { return *((uintx*) addr); } | |
| 190 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
| 191 | |
| 1064 | 192 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } |
| 193 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } | |
| 194 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } | |
| 195 | |
| 0 | 196 bool is_double() const { return strcmp(type, "double") == 0; } |
| 197 double get_double() const { return *((double*) addr); } | |
| 198 void set_double(double value) { *((double*) addr) = value; } | |
| 199 | |
| 200 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
| 201 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
| 202 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
| 203 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
| 204 | |
| 205 bool is_unlocker() const; | |
| 206 bool is_unlocked() const; | |
| 207 bool is_writeable() const; | |
| 208 bool is_external() const; | |
| 209 | |
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210 void print_on(outputStream* st, bool withComments = false ); |
| 0 | 211 void print_as_flag(outputStream* st); |
| 212 }; | |
| 213 | |
| 214 // debug flags control various aspects of the VM and are global accessible | |
| 215 | |
| 216 // use FlagSetting to temporarily change some debug flag | |
| 217 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
| 218 // restored to previous value upon leaving scope | |
| 219 class FlagSetting { | |
| 220 bool val; | |
| 221 bool* flag; | |
| 222 public: | |
| 223 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 224 ~FlagSetting() { *flag = val; } | |
| 225 }; | |
| 226 | |
| 227 | |
| 228 class CounterSetting { | |
| 229 intx* counter; | |
| 230 public: | |
| 231 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
| 232 ~CounterSetting() { (*counter)--; } | |
| 233 }; | |
| 234 | |
| 235 | |
| 236 class IntFlagSetting { | |
| 237 intx val; | |
| 238 intx* flag; | |
| 239 public: | |
| 240 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 241 ~IntFlagSetting() { *flag = val; } | |
| 242 }; | |
| 243 | |
| 244 | |
| 245 class DoubleFlagSetting { | |
| 246 double val; | |
| 247 double* flag; | |
| 248 public: | |
| 249 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 250 ~DoubleFlagSetting() { *flag = val; } | |
| 251 }; | |
| 252 | |
| 253 | |
| 254 class CommandLineFlags { | |
| 255 public: | |
| 256 static bool boolAt(char* name, size_t len, bool* value); | |
| 257 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
| 258 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
| 259 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
| 260 | |
| 261 static bool intxAt(char* name, size_t len, intx* value); | |
| 262 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
| 263 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
| 264 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
| 265 | |
| 266 static bool uintxAt(char* name, size_t len, uintx* value); | |
| 267 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
| 268 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
| 269 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
| 270 | |
| 1064 | 271 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
| 272 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
| 273 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); | |
| 274 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
| 275 | |
| 0 | 276 static bool doubleAt(char* name, size_t len, double* value); |
| 277 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
| 278 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
| 279 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
| 280 | |
| 281 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
| 282 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
| 283 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
| 284 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
| 285 | |
| 286 // Returns false if name is not a command line flag. | |
| 287 static bool wasSetOnCmdline(const char* name, bool* value); | |
| 288 static void printSetFlags(); | |
| 289 | |
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290 static void printFlags(bool withComments = false ); |
| 0 | 291 |
| 292 static void verify() PRODUCT_RETURN; | |
| 293 }; | |
| 294 | |
| 295 // use this for flags that are true by default in the debug version but | |
| 296 // false in the optimized version, and vice versa | |
| 297 #ifdef ASSERT | |
| 298 #define trueInDebug true | |
| 299 #define falseInDebug false | |
| 300 #else | |
| 301 #define trueInDebug false | |
| 302 #define falseInDebug true | |
| 303 #endif | |
| 304 | |
| 305 // use this for flags that are true per default in the product build | |
| 306 // but false in development builds, and vice versa | |
| 307 #ifdef PRODUCT | |
| 308 #define trueInProduct true | |
| 309 #define falseInProduct false | |
| 310 #else | |
| 311 #define trueInProduct false | |
| 312 #define falseInProduct true | |
| 313 #endif | |
| 314 | |
| 315 // use this for flags that are true per default in the tiered build | |
| 316 // but false in non-tiered builds, and vice versa | |
| 317 #ifdef TIERED | |
| 318 #define trueInTiered true | |
| 319 #define falseInTiered false | |
| 320 #else | |
| 321 #define trueInTiered false | |
| 322 #define falseInTiered true | |
| 323 #endif | |
| 324 | |
| 325 // develop flags are settable / visible only during development and are constant in the PRODUCT version | |
| 326 // product flags are always settable / visible | |
| 327 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
| 328 | |
| 329 // A flag must be declared with one of the following types: | |
| 330 // bool, intx, uintx, ccstr. | |
| 331 // The type "ccstr" is an alias for "const char*" and is used | |
| 332 // only in this file, because the macrology requires single-token type names. | |
| 333 | |
| 334 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
| 335 // They are to be used for VM quality assurance or field diagnosis | |
| 336 // of VM bugs. They are hidden so that users will not be encouraged to | |
| 337 // try them as if they were VM ordinary execution options. However, they | |
| 338 // are available in the product version of the VM. Under instruction | |
| 339 // from support engineers, VM customers can turn them on to collect | |
| 340 // diagnostic information about VM problems. To use a VM diagnostic | |
| 341 // option, you must first specify +UnlockDiagnosticVMOptions. | |
| 342 // (This master switch also affects the behavior of -Xprintflags.) | |
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343 // |
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344 // experimental flags are in support of features that are not |
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345 // part of the officially supported product, but are available |
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346 // for experimenting with. They could, for example, be performance |
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347 // features that may not have undergone full or rigorous QA, but which may |
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348 // help performance in some cases and released for experimentation |
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349 // by the community of users and developers. This flag also allows one to |
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350 // be able to build a fully supported product that nonetheless also |
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351 // ships with some unsupported, lightly tested, experimental features. |
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352 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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353 // UnlockExperimentalVMOptions flag, which allows the control and |
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354 // modification of the experimental flags. |
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355 // |
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356 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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357 // and they are not supported on production loads, except under explicit |
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358 // direction from support engineers. |
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359 // |
| 0 | 360 // manageable flags are writeable external product flags. |
| 361 // They are dynamically writeable through the JDK management interface | |
| 362 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
| 363 // These flags are external exported interface (see CCC). The list of | |
| 364 // manageable flags can be queried programmatically through the management | |
| 365 // interface. | |
| 366 // | |
| 367 // A flag can be made as "manageable" only if | |
| 368 // - the flag is defined in a CCC as an external exported interface. | |
| 369 // - the VM implementation supports dynamic setting of the flag. | |
| 370 // This implies that the VM must *always* query the flag variable | |
| 371 // and not reuse state related to the flag state at any given time. | |
| 372 // - you want the flag to be queried programmatically by the customers. | |
| 373 // | |
| 374 // product_rw flags are writeable internal product flags. | |
| 375 // They are like "manageable" flags but for internal/private use. | |
| 376 // The list of product_rw flags are internal/private flags which | |
| 377 // may be changed/removed in a future release. It can be set | |
| 378 // through the management interface to get/set value | |
| 379 // when the name of flag is supplied. | |
| 380 // | |
| 381 // A flag can be made as "product_rw" only if | |
| 382 // - the VM implementation supports dynamic setting of the flag. | |
| 383 // This implies that the VM must *always* query the flag variable | |
| 384 // and not reuse state related to the flag state at any given time. | |
| 385 // | |
| 386 // Note that when there is a need to support develop flags to be writeable, | |
| 387 // it can be done in the same way as product_rw. | |
| 388 | |
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389 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
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390 \ |
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391 lp64_product(bool, UseCompressedOops, false, \ |
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392 "Use 32-bit object references in 64-bit VM. " \ |
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393 "lp64_product means flag is always constant in 32 bit VM") \ |
| 0 | 394 \ |
|
642
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395 notproduct(bool, CheckCompressedOops, true, \ |
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396 "generate checks in encoding/decoding code in debug VM") \ |
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397 \ |
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398 product_pd(uintx, HeapBaseMinAddress, \ |
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399 "OS specific low limit for heap base address") \ |
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400 \ |
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401 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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402 "Print compressed oops base address and encoding mode") \ |
|
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403 \ |
|
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404 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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405 "Default object alignment in bytes, 8 is minimum") \ |
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406 \ |
| 0 | 407 /* UseMembar is theoretically a temp flag used for memory barrier \ |
| 408 * removal testing. It was supposed to be removed before FCS but has \ | |
| 409 * been re-added (see 6401008) */ \ | |
|
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410 product_pd(bool, UseMembar, \ |
| 0 | 411 "(Unstable) Issues membars on thread state transitions") \ |
| 412 \ | |
|
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413 /* Temporary: See 6948537 */ \ |
|
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414 experimental(bool, UseMemSetInBOT, true, \ |
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415 "(Unstable) uses memset in BOT updates in GC code") \ |
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416 \ |
| 0 | 417 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
|
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418 "Enable normal processing of flags relating to field diagnostics")\ |
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419 \ |
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420 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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421 "Enable normal processing of flags relating to experimental features")\ |
| 0 | 422 \ |
| 423 product(bool, JavaMonitorsInStackTrace, true, \ | |
| 424 "Print info. about Java monitor locks when the stacks are dumped")\ | |
| 425 \ | |
| 426 product_pd(bool, UseLargePages, \ | |
| 427 "Use large page memory") \ | |
| 428 \ | |
|
389
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429 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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430 "Allocate large pages individually for better affinity") \ |
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431 \ |
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432 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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433 "Fail large pages individual allocation") \ |
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434 \ |
| 0 | 435 develop(bool, TracePageSizes, false, \ |
| 436 "Trace page size selection and usage.") \ | |
| 437 \ | |
| 438 product(bool, UseNUMA, false, \ | |
| 439 "Use NUMA if available") \ | |
| 440 \ | |
|
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441 product(bool, ForceNUMA, false, \ |
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442 "Force NUMA optimizations on single-node/UMA systems") \ |
|
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443 \ |
| 0 | 444 product(intx, NUMAChunkResizeWeight, 20, \ |
| 445 "Percentage (0-100) used to weight the current sample when " \ | |
| 446 "computing exponentially decaying average for " \ | |
| 447 "AdaptiveNUMAChunkSizing") \ | |
| 448 \ | |
| 449 product(intx, NUMASpaceResizeRate, 1*G, \ | |
| 450 "Do not reallocate more that this amount per collection") \ | |
| 451 \ | |
| 452 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
| 453 "Enable adaptive chunk sizing for NUMA") \ | |
| 454 \ | |
| 455 product(bool, NUMAStats, false, \ | |
| 456 "Print NUMA stats in detailed heap information") \ | |
| 457 \ | |
| 458 product(intx, NUMAPageScanRate, 256, \ | |
| 459 "Maximum number of pages to include in the page scan procedure") \ | |
| 460 \ | |
| 461 product_pd(bool, NeedsDeoptSuspend, \ | |
| 462 "True for register window machines (sparc/ia64)") \ | |
| 463 \ | |
| 464 product(intx, UseSSE, 99, \ | |
| 465 "Highest supported SSE instructions set on x86/x64") \ | |
| 466 \ | |
| 467 product(uintx, LargePageSizeInBytes, 0, \ | |
| 468 "Large page size (0 to let VM choose the page size") \ | |
| 469 \ | |
| 470 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
| 471 "Use large pages if max heap is at least this big") \ | |
| 472 \ | |
| 473 product(bool, ForceTimeHighResolution, false, \ | |
| 474 "Using high time resolution(For Win32 only)") \ | |
| 475 \ | |
| 476 develop(bool, TraceItables, false, \ | |
| 477 "Trace initialization and use of itables") \ | |
| 478 \ | |
| 479 develop(bool, TracePcPatching, false, \ | |
| 480 "Trace usage of frame::patch_pc") \ | |
| 481 \ | |
| 482 develop(bool, TraceJumps, false, \ | |
| 483 "Trace assembly jumps in thread ring buffer") \ | |
| 484 \ | |
| 485 develop(bool, TraceRelocator, false, \ | |
| 486 "Trace the bytecode relocator") \ | |
| 487 \ | |
| 488 develop(bool, TraceLongCompiles, false, \ | |
| 489 "Print out every time compilation is longer than " \ | |
| 490 "a given threashold") \ | |
| 491 \ | |
| 492 develop(bool, SafepointALot, false, \ | |
| 493 "Generates a lot of safepoints. Works with " \ | |
| 494 "GuaranteedSafepointInterval") \ | |
| 495 \ | |
| 496 product_pd(bool, BackgroundCompilation, \ | |
| 497 "A thread requesting compilation is not blocked during " \ | |
| 498 "compilation") \ | |
| 499 \ | |
| 500 product(bool, PrintVMQWaitTime, false, \ | |
| 501 "Prints out the waiting time in VM operation queue") \ | |
| 502 \ | |
| 503 develop(bool, BailoutToInterpreterForThrows, false, \ | |
| 504 "Compiled methods which throws/catches exceptions will be " \ | |
| 505 "deopt and intp.") \ | |
| 506 \ | |
| 507 develop(bool, NoYieldsInMicrolock, false, \ | |
| 508 "Disable yields in microlock") \ | |
| 509 \ | |
| 510 develop(bool, TraceOopMapGeneration, false, \ | |
| 511 "Shows oopmap generation") \ | |
| 512 \ | |
| 513 product(bool, MethodFlushing, true, \ | |
| 514 "Reclamation of zombie and not-entrant methods") \ | |
| 515 \ | |
| 516 develop(bool, VerifyStack, false, \ | |
| 517 "Verify stack of each thread when it is entering a runtime call") \ | |
| 518 \ | |
| 519 develop(bool, ForceUnreachable, false, \ | |
| 520 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ | |
| 521 \ | |
| 522 notproduct(bool, StressDerivedPointers, false, \ | |
| 523 "Force scavenge when a derived pointers is detected on stack " \ | |
| 524 "after rtm call") \ | |
| 525 \ | |
| 526 develop(bool, TraceDerivedPointers, false, \ | |
| 527 "Trace traversal of derived pointers on stack") \ | |
| 528 \ | |
| 529 notproduct(bool, TraceCodeBlobStacks, false, \ | |
| 530 "Trace stack-walk of codeblobs") \ | |
| 531 \ | |
| 532 product(bool, PrintJNIResolving, false, \ | |
| 533 "Used to implement -v:jni") \ | |
| 534 \ | |
| 535 notproduct(bool, PrintRewrites, false, \ | |
| 536 "Print methods that are being rewritten") \ | |
| 537 \ | |
| 538 product(bool, UseInlineCaches, true, \ | |
| 539 "Use Inline Caches for virtual calls ") \ | |
| 540 \ | |
| 541 develop(bool, InlineArrayCopy, true, \ | |
| 542 "inline arraycopy native that is known to be part of " \ | |
| 543 "base library DLL") \ | |
| 544 \ | |
| 545 develop(bool, InlineObjectHash, true, \ | |
| 546 "inline Object::hashCode() native that is known to be part " \ | |
| 547 "of base library DLL") \ | |
| 548 \ | |
| 549 develop(bool, InlineObjectCopy, true, \ | |
| 550 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ | |
| 551 \ | |
| 552 develop(bool, InlineNatives, true, \ | |
| 553 "inline natives that are known to be part of base library DLL") \ | |
| 554 \ | |
| 555 develop(bool, InlineMathNatives, true, \ | |
| 556 "inline SinD, CosD, etc.") \ | |
| 557 \ | |
| 558 develop(bool, InlineClassNatives, true, \ | |
| 559 "inline Class.isInstance, etc") \ | |
| 560 \ | |
| 561 develop(bool, InlineAtomicLong, true, \ | |
| 562 "inline sun.misc.AtomicLong") \ | |
| 563 \ | |
| 564 develop(bool, InlineThreadNatives, true, \ | |
| 565 "inline Thread.currentThread, etc") \ | |
| 566 \ | |
| 567 develop(bool, InlineReflectionGetCallerClass, true, \ | |
| 568 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ | |
| 569 "of base library DLL") \ | |
| 570 \ | |
| 571 develop(bool, InlineUnsafeOps, true, \ | |
| 572 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
| 573 \ | |
| 574 develop(bool, ConvertCmpD2CmpF, true, \ | |
| 575 "Convert cmpD to cmpF when one input is constant in float range") \ | |
| 576 \ | |
| 577 develop(bool, ConvertFloat2IntClipping, true, \ | |
| 578 "Convert float2int clipping idiom to integer clipping") \ | |
| 579 \ | |
| 580 develop(bool, SpecialStringCompareTo, true, \ | |
| 581 "special version of string compareTo") \ | |
| 582 \ | |
| 583 develop(bool, SpecialStringIndexOf, true, \ | |
| 584 "special version of string indexOf") \ | |
| 585 \ | |
| 681 | 586 develop(bool, SpecialStringEquals, true, \ |
| 587 "special version of string equals") \ | |
| 588 \ | |
| 589 develop(bool, SpecialArraysEquals, true, \ | |
|
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590 "special version of Arrays.equals(char[],char[])") \ |
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591 \ |
| 681 | 592 product(bool, UseSSE42Intrinsics, false, \ |
| 593 "SSE4.2 versions of intrinsics") \ | |
| 594 \ | |
| 0 | 595 develop(bool, TraceCallFixup, false, \ |
| 596 "traces all call fixups") \ | |
| 597 \ | |
| 598 develop(bool, DeoptimizeALot, false, \ | |
| 599 "deoptimize at every exit from the runtime system") \ | |
| 600 \ | |
| 434 | 601 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
| 0 | 602 "a comma separated list of bcis to deoptimize at") \ |
| 603 \ | |
| 604 product(bool, DeoptimizeRandom, false, \ | |
| 605 "deoptimize random frames on random exit from the runtime system")\ | |
| 606 \ | |
| 607 notproduct(bool, ZombieALot, false, \ | |
| 608 "creates zombies (non-entrant) at exit from the runt. system") \ | |
| 609 \ | |
|
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610 product(bool, UnlinkSymbolsALot, false, \ |
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611 "unlink unreferenced symbols from the symbol table at safepoints")\ |
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612 \ |
| 0 | 613 notproduct(bool, WalkStackALot, false, \ |
| 614 "trace stack (no print) at every exit from the runtime system") \ | |
| 615 \ | |
| 616 develop(bool, Debugging, false, \ | |
| 617 "set when executing debug methods in debug.ccp " \ | |
| 618 "(to prevent triggering assertions)") \ | |
| 619 \ | |
| 620 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
| 621 "Enable strict checks that safepoints cannot happen for threads " \ | |
| 622 "that used No_Safepoint_Verifier") \ | |
| 623 \ | |
| 624 notproduct(bool, VerifyLastFrame, false, \ | |
| 625 "Verify oops on last frame on entry to VM") \ | |
| 626 \ | |
| 627 develop(bool, TraceHandleAllocation, false, \ | |
| 628 "Prints out warnings when suspicious many handles are allocated") \ | |
| 629 \ | |
| 630 product(bool, UseCompilerSafepoints, true, \ | |
| 631 "Stop at safepoints in compiled code") \ | |
| 632 \ | |
| 633 product(bool, UseSplitVerifier, true, \ | |
| 634 "use split verifier with StackMapTable attributes") \ | |
| 635 \ | |
| 636 product(bool, FailOverToOldVerifier, true, \ | |
| 637 "fail over to old verifier when split verifier fails") \ | |
| 638 \ | |
| 639 develop(bool, ShowSafepointMsgs, false, \ | |
| 640 "Show msg. about safepoint synch.") \ | |
| 641 \ | |
| 642 product(bool, SafepointTimeout, false, \ | |
| 643 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
| 644 "milliseconds if failed to reach safepoint") \ | |
| 645 \ | |
| 646 develop(bool, DieOnSafepointTimeout, false, \ | |
| 647 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
| 648 \ | |
| 649 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
| 650 /* typically, at most a few retries are needed */ \ | |
| 651 product(intx, SuspendRetryCount, 50, \ | |
| 652 "Maximum retry count for an external suspend request") \ | |
| 653 \ | |
| 654 product(intx, SuspendRetryDelay, 5, \ | |
| 655 "Milliseconds to delay per retry (* current_retry_count)") \ | |
| 656 \ | |
| 657 product(bool, AssertOnSuspendWaitFailure, false, \ | |
| 658 "Assert/Guarantee on external suspend wait failure") \ | |
| 659 \ | |
| 660 product(bool, TraceSuspendWaitFailures, false, \ | |
| 661 "Trace external suspend wait failures") \ | |
| 662 \ | |
| 663 product(bool, MaxFDLimit, true, \ | |
| 664 "Bump the number of file descriptors to max in solaris.") \ | |
| 665 \ | |
| 666 notproduct(bool, LogEvents, trueInDebug, \ | |
| 667 "Enable Event log") \ | |
| 668 \ | |
| 669 product(bool, BytecodeVerificationRemote, true, \ | |
| 670 "Enables the Java bytecode verifier for remote classes") \ | |
| 671 \ | |
| 672 product(bool, BytecodeVerificationLocal, false, \ | |
| 673 "Enables the Java bytecode verifier for local classes") \ | |
| 674 \ | |
| 675 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
| 676 "Force exceptions on FP stack under/overflow") \ | |
| 677 \ | |
| 678 develop(bool, SoftMatchFailure, trueInProduct, \ | |
| 679 "If the DFA fails to match a node, print a message and bail out") \ | |
| 680 \ | |
| 681 develop(bool, VerifyStackAtCalls, false, \ | |
| 682 "Verify that the stack pointer is unchanged after calls") \ | |
| 683 \ | |
| 684 develop(bool, TraceJavaAssertions, false, \ | |
| 685 "Trace java language assertions") \ | |
| 686 \ | |
| 687 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
| 688 "temporary - see javaClasses.cpp") \ | |
| 689 \ | |
| 690 notproduct(bool, PrintMallocFree, false, \ | |
| 691 "Trace calls to C heap malloc/free allocation") \ | |
| 692 \ | |
|
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693 product(bool, PrintOopAddress, false, \ |
| 0 | 694 "Always print the location of the oop") \ |
| 695 \ | |
| 696 notproduct(bool, VerifyCodeCacheOften, false, \ | |
| 697 "Verify compiled-code cache often") \ | |
| 698 \ | |
| 699 develop(bool, ZapDeadCompiledLocals, false, \ | |
| 700 "Zap dead locals in compiler frames") \ | |
| 701 \ | |
| 702 notproduct(bool, ZapDeadLocalsOld, false, \ | |
| 703 "Zap dead locals (old version, zaps all frames when " \ | |
| 704 "entering the VM") \ | |
| 705 \ | |
| 706 notproduct(bool, CheckOopishValues, false, \ | |
| 707 "Warn if value contains oop ( requires ZapDeadLocals)") \ | |
| 708 \ | |
| 709 develop(bool, UseMallocOnly, false, \ | |
| 710 "use only malloc/free for allocation (no resource area/arena)") \ | |
| 711 \ | |
| 712 develop(bool, PrintMalloc, false, \ | |
| 713 "print all malloc/free calls") \ | |
| 714 \ | |
| 2250 | 715 develop(bool, PrintMallocStatistics, false, \ |
| 716 "print malloc/free statistics") \ | |
| 717 \ | |
| 0 | 718 develop(bool, ZapResourceArea, trueInDebug, \ |
| 719 "Zap freed resource/arena space with 0xABABABAB") \ | |
| 720 \ | |
| 721 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
| 722 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
| 723 \ | |
| 724 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
| 725 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
| 726 \ | |
|
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727 notproduct(bool, ZapStackSegments, trueInDebug, \ |
|
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|
728 "Zap allocated/freed Stack segments with 0xFADFADED") \ |
|
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729 \ |
|
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730 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
| 0 | 731 "Zap unused heap space with 0xBAADBABE") \ |
| 732 \ | |
|
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733 develop(bool, TraceZapUnusedHeapArea, false, \ |
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734 "Trace zapping of unused heap space") \ |
|
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|
735 \ |
|
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736 develop(bool, CheckZapUnusedHeapArea, false, \ |
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737 "Check zapping of unused heap space") \ |
|
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738 \ |
|
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739 develop(bool, ZapFillerObjects, trueInDebug, \ |
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740 "Zap filler objects with 0xDEAFBABE") \ |
|
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741 \ |
| 0 | 742 develop(bool, PrintVMMessages, true, \ |
| 743 "Print vm messages on console") \ | |
| 744 \ | |
| 745 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
| 746 "Print the time the application has been running") \ | |
| 747 \ | |
| 748 product(bool, PrintGCApplicationStoppedTime, false, \ | |
| 749 "Print the time the application has been stopped") \ | |
| 750 \ | |
|
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751 notproduct(uintx, ErrorHandlerTest, 0, \ |
|
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752 "If > 0, provokes an error after VM initialization; the value" \ |
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753 "determines which error to provoke. See test_error_handler()" \ |
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754 "in debug.cpp.") \ |
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|
755 \ |
| 0 | 756 develop(bool, Verbose, false, \ |
| 757 "Prints additional debugging information from other modes") \ | |
| 758 \ | |
| 759 develop(bool, PrintMiscellaneous, false, \ | |
| 760 "Prints uncategorized debugging information (requires +Verbose)") \ | |
| 761 \ | |
| 762 develop(bool, WizardMode, false, \ | |
| 763 "Prints much more debugging information") \ | |
| 764 \ | |
| 765 product(bool, ShowMessageBoxOnError, false, \ | |
| 766 "Keep process alive on VM fatal error") \ | |
| 767 \ | |
| 768 product_pd(bool, UseOSErrorReporting, \ | |
| 769 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
| 770 \ | |
| 771 product(bool, SuppressFatalErrorMessage, false, \ | |
| 772 "Do NO Fatal Error report [Avoid deadlock]") \ | |
| 773 \ | |
| 774 product(ccstrlist, OnError, "", \ | |
| 775 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
| 776 "for examples") \ | |
| 777 \ | |
| 778 product(ccstrlist, OnOutOfMemoryError, "", \ | |
| 779 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
| 780 \ | |
|
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781 manageable(bool, HeapDumpBeforeFullGC, false, \ |
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782 "Dump heap to file before any major stop-world GC") \ |
|
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783 \ |
|
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|
784 manageable(bool, HeapDumpAfterFullGC, false, \ |
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|
785 "Dump heap to file after any major stop-world GC") \ |
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|
786 \ |
| 0 | 787 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
| 788 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
| 789 \ | |
| 790 manageable(ccstr, HeapDumpPath, NULL, \ | |
| 791 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
| 792 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
| 793 "in the working directory)") \ | |
| 794 \ | |
| 795 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
| 796 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
| 797 "when the heap usage is larger than this") \ | |
| 798 \ | |
| 799 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
| 800 "Approximate segment size when generating a segmented heap dump") \ | |
| 801 \ | |
| 802 develop(bool, BreakAtWarning, false, \ | |
| 803 "Execute breakpoint upon encountering VM warning") \ | |
| 804 \ | |
| 805 product_pd(bool, UseVectoredExceptions, \ | |
| 806 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
| 807 \ | |
| 808 develop(bool, TraceVMOperation, false, \ | |
| 809 "Trace vm operations") \ | |
| 810 \ | |
| 811 develop(bool, UseFakeTimers, false, \ | |
| 812 "Tells whether the VM should use system time or a fake timer") \ | |
| 813 \ | |
| 814 diagnostic(bool, LogCompilation, false, \ | |
| 815 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
| 816 \ | |
| 817 product(bool, PrintCompilation, false, \ | |
| 818 "Print compilations") \ | |
| 819 \ | |
| 820 diagnostic(bool, TraceNMethodInstalls, false, \ | |
| 821 "Trace nmethod intallation") \ | |
| 822 \ | |
|
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823 diagnostic(intx, ScavengeRootsInCode, 0, \ |
|
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824 "0: do not allow scavengable oops in the code cache; " \ |
|
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825 "1: allow scavenging from the code cache; " \ |
|
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826 "2: emit as many constants as the compiler can see") \ |
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|
827 \ |
| 0 | 828 diagnostic(bool, TraceOSRBreakpoint, false, \ |
| 829 "Trace OSR Breakpoint ") \ | |
| 830 \ | |
| 831 diagnostic(bool, TraceCompileTriggered, false, \ | |
| 832 "Trace compile triggered") \ | |
| 833 \ | |
| 834 diagnostic(bool, TraceTriggers, false, \ | |
| 835 "Trace triggers") \ | |
| 836 \ | |
| 837 product(bool, AlwaysRestoreFPU, false, \ | |
| 838 "Restore the FPU control word after every JNI call (expensive)") \ | |
| 839 \ | |
| 840 notproduct(bool, PrintCompilation2, false, \ | |
| 841 "Print additional statistics per compilation") \ | |
| 842 \ | |
|
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843 diagnostic(bool, PrintAdapterHandlers, false, \ |
| 0 | 844 "Print code generated for i2c/c2i adapters") \ |
| 845 \ | |
|
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846 develop(bool, VerifyAdapterSharing, false, \ |
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847 "Verify that the code for shared adapters is the equivalent") \ |
|
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848 \ |
|
100
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849 diagnostic(bool, PrintAssembly, false, \ |
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850 "Print assembly code (using external disassembler.so)") \ |
|
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851 \ |
|
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852 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
|
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853 "Options string passed to disassembler.so") \ |
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854 \ |
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855 diagnostic(bool, PrintNMethods, false, \ |
| 0 | 856 "Print assembly code for nmethods when generated") \ |
| 857 \ | |
|
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858 diagnostic(bool, PrintNativeNMethods, false, \ |
| 0 | 859 "Print assembly code for native nmethods when generated") \ |
| 860 \ | |
| 861 develop(bool, PrintDebugInfo, false, \ | |
| 862 "Print debug information for all nmethods when generated") \ | |
| 863 \ | |
| 864 develop(bool, PrintRelocations, false, \ | |
| 865 "Print relocation information for all nmethods when generated") \ | |
| 866 \ | |
| 867 develop(bool, PrintDependencies, false, \ | |
| 868 "Print dependency information for all nmethods when generated") \ | |
| 869 \ | |
| 870 develop(bool, PrintExceptionHandlers, false, \ | |
| 871 "Print exception handler tables for all nmethods when generated") \ | |
| 872 \ | |
| 873 develop(bool, InterceptOSException, false, \ | |
| 874 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
| 875 "exception happens") \ | |
| 876 \ | |
| 877 notproduct(bool, PrintCodeCache, false, \ | |
| 878 "Print the compiled_code cache when exiting") \ | |
| 879 \ | |
| 880 develop(bool, PrintCodeCache2, false, \ | |
| 881 "Print detailed info on the compiled_code cache when exiting") \ | |
| 882 \ | |
|
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883 diagnostic(bool, PrintStubCode, false, \ |
| 0 | 884 "Print generated stub code") \ |
| 885 \ | |
| 886 product(bool, StackTraceInThrowable, true, \ | |
| 887 "Collect backtrace in throwable when exception happens") \ | |
| 888 \ | |
| 889 product(bool, OmitStackTraceInFastThrow, true, \ | |
| 890 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
| 891 \ | |
| 892 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
| 893 "Prints byte code statictics when dumping profiler output") \ | |
| 894 \ | |
| 895 product(bool, ProfilerRecordPC, false, \ | |
| 896 "Collects tick for each 16 byte interval of compiled code") \ | |
| 897 \ | |
| 1064 | 898 product(bool, ProfileVM, false, \ |
| 0 | 899 "Profiles ticks that fall within VM (either in the VM Thread " \ |
| 900 "or VM code called through stubs)") \ | |
| 901 \ | |
| 902 product(bool, ProfileIntervals, false, \ | |
| 903 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
| 904 \ | |
| 905 notproduct(bool, ProfilerCheckIntervals, false, \ | |
| 906 "Collect and print info on spacing of profiler ticks") \ | |
| 907 \ | |
| 908 develop(bool, PrintJVMWarnings, false, \ | |
| 909 "Prints warnings for unimplemented JVM functions") \ | |
| 910 \ | |
|
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911 product(bool, PrintWarnings, true, \ |
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912 "Prints JVM warnings to output stream") \ |
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913 \ |
| 0 | 914 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
| 915 "Prints warnings for stalled SpinLocks") \ | |
| 916 \ | |
| 917 develop(bool, InitializeJavaLangSystem, true, \ | |
| 918 "Initialize java.lang.System - turn off for individual " \ | |
| 919 "method debugging") \ | |
| 920 \ | |
| 921 develop(bool, InitializeJavaLangString, true, \ | |
| 922 "Initialize java.lang.String - turn off for individual " \ | |
| 923 "method debugging") \ | |
| 924 \ | |
| 925 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
| 926 "Initialize various error and exception classes - turn off for " \ | |
| 927 "individual method debugging") \ | |
| 928 \ | |
| 929 product(bool, RegisterFinalizersAtInit, true, \ | |
| 930 "Register finalizable objects at end of Object.<init> or " \ | |
| 1064 | 931 "after allocation") \ |
| 0 | 932 \ |
| 933 develop(bool, RegisterReferences, true, \ | |
| 934 "Tells whether the VM should register soft/weak/final/phantom " \ | |
| 935 "references") \ | |
| 936 \ | |
| 937 develop(bool, IgnoreRewrites, false, \ | |
| 938 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
| 939 "This is unsafe!") \ | |
| 940 \ | |
| 941 develop(bool, PrintCodeCacheExtension, false, \ | |
| 942 "Print extension of code cache") \ | |
| 943 \ | |
| 944 develop(bool, UsePrivilegedStack, true, \ | |
| 945 "Enable the security JVM functions") \ | |
| 946 \ | |
| 947 develop(bool, IEEEPrecision, true, \ | |
| 948 "Enables IEEE precision (for INTEL only)") \ | |
| 949 \ | |
| 950 develop(bool, ProtectionDomainVerification, true, \ | |
| 951 "Verifies protection domain before resolution in system " \ | |
| 952 "dictionary") \ | |
| 953 \ | |
| 954 product(bool, ClassUnloading, true, \ | |
| 955 "Do unloading of classes") \ | |
| 956 \ | |
|
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957 diagnostic(bool, LinkWellKnownClasses, false, \ |
|
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958 "Resolve a well known class as soon as its name is seen") \ |
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959 \ |
| 0 | 960 develop(bool, DisableStartThread, false, \ |
| 961 "Disable starting of additional Java threads " \ | |
| 962 "(for debugging only)") \ | |
| 963 \ | |
| 964 develop(bool, MemProfiling, false, \ | |
| 965 "Write memory usage profiling to log file") \ | |
| 966 \ | |
| 967 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
| 968 "Prints the system dictionary at exit") \ | |
| 969 \ | |
| 970 diagnostic(bool, UnsyncloadClass, false, \ | |
| 514 | 971 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
| 972 "class loader must call VM synchronized for findClass " \ | |
| 973 "and defineClass.") \ | |
| 974 \ | |
| 975 product(bool, AlwaysLockClassLoader, false, \ | |
| 976 "Require the VM to acquire the class loader lock before calling " \ | |
| 977 "loadClass() even for class loaders registering " \ | |
| 1064 | 978 "as parallel capable") \ |
| 514 | 979 \ |
| 980 product(bool, AllowParallelDefineClass, false, \ | |
| 981 "Allow parallel defineClass requests for class loaders " \ | |
| 1064 | 982 "registering as parallel capable") \ |
| 514 | 983 \ |
| 984 product(bool, MustCallLoadClassInternal, false, \ | |
| 1064 | 985 "Call loadClassInternal() rather than loadClass()") \ |
| 0 | 986 \ |
| 987 product_pd(bool, DontYieldALot, \ | |
| 988 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
| 989 \ | |
| 990 product_pd(bool, ConvertSleepToYield, \ | |
| 991 "Converts sleep(0) to thread yield " \ | |
| 992 "(may be off for SOLARIS to improve GUI)") \ | |
| 993 \ | |
| 994 product(bool, ConvertYieldToSleep, false, \ | |
| 995 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
| 996 "behavior (SOLARIS only)") \ | |
| 997 \ | |
| 998 product(bool, UseBoundThreads, true, \ | |
| 999 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
| 1000 \ | |
| 1001 develop(bool, UseDetachedThreads, true, \ | |
| 1002 "Use detached threads that are recycled upon termination " \ | |
| 1003 "(for SOLARIS only)") \ | |
| 1004 \ | |
| 1005 product(bool, UseLWPSynchronization, true, \ | |
| 1006 "Use LWP-based instead of libthread-based synchronization " \ | |
| 1007 "(SPARC only)") \ | |
| 1008 \ | |
|
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1009 product(ccstr, SyncKnobs, NULL, \ |
| 0 | 1010 "(Unstable) Various monitor synchronization tunables") \ |
| 1011 \ | |
| 1012 product(intx, EmitSync, 0, \ | |
| 1013 "(Unsafe,Unstable) " \ | |
| 1014 " Controls emission of inline sync fast-path code") \ | |
| 1015 \ | |
| 1016 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ | |
| 1017 \ | |
| 1587 | 1018 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
| 1019 \ | |
| 1020 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
| 1021 \ | |
| 0 | 1022 product(intx, Atomics, 0, \ |
| 1023 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
| 1024 \ | |
| 1025 product(intx, FenceInstruction, 0, \ | |
| 1026 "(Unsafe,Unstable) Experimental") \ | |
| 1027 \ | |
| 1028 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
| 1029 \ | |
| 1030 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
| 1031 \ | |
| 1032 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
| 1033 \ | |
| 1034 product(intx, hashCode, 0, \ | |
| 1035 "(Unstable) select hashCode generation algorithm" ) \ | |
| 1036 \ | |
| 1037 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
| 1038 "(Unstable, Linux-specific)" \ | |
| 1039 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
| 1040 \ | |
| 1064 | 1041 product(bool, FilterSpuriousWakeups, true, \ |
| 1042 "Prevent spurious or premature wakeups from object.wait " \ | |
| 1043 "(Solaris only)") \ | |
| 0 | 1044 \ |
| 1045 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
| 1046 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
| 1047 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
| 1048 \ | |
| 1049 develop(bool, UsePthreads, false, \ | |
| 1050 "Use pthread-based instead of libthread-based synchronization " \ | |
| 1051 "(SPARC only)") \ | |
| 1052 \ | |
| 1053 product(bool, AdjustConcurrency, false, \ | |
| 1054 "call thr_setconcurrency at thread create time to avoid " \ | |
| 1055 "LWP starvation on MP systems (For Solaris Only)") \ | |
| 1056 \ | |
| 1057 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ | |
| 1058 "Should the system attempt to update the compiler file when " \ | |
| 1059 "an error occurs?") \ | |
| 1060 \ | |
| 1061 product(bool, ReduceSignalUsage, false, \ | |
| 1062 "Reduce the use of OS signals in Java and/or the VM") \ | |
| 1063 \ | |
| 1064 notproduct(bool, ValidateMarkSweep, false, \ | |
| 1065 "Do extra validation during MarkSweep collection") \ | |
| 1066 \ | |
| 1067 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
| 1068 "Enable GC-to-GC recording and querying of compaction during " \ | |
| 1069 "MarkSweep") \ | |
| 1070 \ | |
| 1071 develop_pd(bool, ShareVtableStubs, \ | |
| 1072 "Share vtable stubs (smaller code but worse branch prediction") \ | |
| 1073 \ | |
| 1074 develop(bool, LoadLineNumberTables, true, \ | |
| 1075 "Tells whether the class file parser loads line number tables") \ | |
| 1076 \ | |
| 1077 develop(bool, LoadLocalVariableTables, true, \ | |
| 1078 "Tells whether the class file parser loads local variable tables")\ | |
| 1079 \ | |
| 1080 develop(bool, LoadLocalVariableTypeTables, true, \ | |
| 1081 "Tells whether the class file parser loads local variable type tables")\ | |
| 1082 \ | |
| 1083 product(bool, AllowUserSignalHandlers, false, \ | |
| 1084 "Do not complain if the application installs signal handlers " \ | |
| 1085 "(Solaris & Linux only)") \ | |
| 1086 \ | |
| 1087 product(bool, UseSignalChaining, true, \ | |
| 1088 "Use signal-chaining to invoke signal handlers installed " \ | |
| 1089 "by the application (Solaris & Linux only)") \ | |
| 1090 \ | |
| 1091 product(bool, UseAltSigs, false, \ | |
| 1092 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
| 1064 | 1093 "internal signals (Solaris only)") \ |
| 0 | 1094 \ |
| 1095 product(bool, UseSpinning, false, \ | |
| 1096 "Use spinning in monitor inflation and before entry") \ | |
| 1097 \ | |
| 1098 product(bool, PreSpinYield, false, \ | |
| 1099 "Yield before inner spinning loop") \ | |
| 1100 \ | |
| 1101 product(bool, PostSpinYield, true, \ | |
| 1102 "Yield after inner spinning loop") \ | |
| 1103 \ | |
| 1104 product(bool, AllowJNIEnvProxy, false, \ | |
| 1105 "Allow JNIEnv proxies for jdbx") \ | |
| 1106 \ | |
| 1107 product(bool, JNIDetachReleasesMonitors, true, \ | |
| 1108 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
| 1109 \ | |
| 1110 product(bool, RestoreMXCSROnJNICalls, false, \ | |
| 1111 "Restore MXCSR when returning from JNI calls") \ | |
| 1112 \ | |
| 1113 product(bool, CheckJNICalls, false, \ | |
| 1114 "Verify all arguments to JNI calls") \ | |
| 1115 \ | |
| 1116 product(bool, UseFastJNIAccessors, true, \ | |
| 1117 "Use optimized versions of Get<Primitive>Field") \ | |
| 1118 \ | |
| 1119 product(bool, EagerXrunInit, false, \ | |
| 1120 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
| 1121 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
| 1122 \ | |
| 1123 product(bool, PreserveAllAnnotations, false, \ | |
| 1124 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
| 1125 \ | |
| 1126 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
| 1127 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
| 1128 \ | |
| 1129 product(bool, LazyBootClassLoader, true, \ | |
| 1130 "Enable/disable lazy opening of boot class path entries") \ | |
| 1131 \ | |
| 1132 diagnostic(bool, UseIncDec, true, \ | |
| 1133 "Use INC, DEC instructions on x86") \ | |
| 1134 \ | |
| 219 | 1135 product(bool, UseNewLongLShift, false, \ |
| 1136 "Use optimized bitwise shift left") \ | |
| 1137 \ | |
| 0 | 1138 product(bool, UseStoreImmI16, true, \ |
| 1139 "Use store immediate 16-bits value instruction on x86") \ | |
| 1140 \ | |
| 1141 product(bool, UseAddressNop, false, \ | |
| 1142 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
| 1143 \ | |
| 1144 product(bool, UseXmmLoadAndClearUpper, true, \ | |
| 1145 "Load low part of XMM register and clear upper part") \ | |
| 1146 \ | |
| 1147 product(bool, UseXmmRegToRegMoveAll, false, \ | |
| 1148 "Copy all XMM register bits when moving value between registers") \ | |
| 1149 \ | |
| 71 | 1150 product(bool, UseXmmI2D, false, \ |
| 1151 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
| 1152 \ | |
| 1153 product(bool, UseXmmI2F, false, \ | |
| 1154 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
| 1155 \ | |
| 405 | 1156 product(bool, UseXMMForArrayCopy, false, \ |
| 1157 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
| 1158 \ | |
| 1159 product(bool, UseUnalignedLoadStores, false, \ | |
| 1160 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
| 1161 \ | |
| 0 | 1162 product(intx, FieldsAllocationStyle, 1, \ |
|
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|
1163 "0 - type based with oops first, 1 - with oops last, " \ |
|
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diff
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|
1164 "2 - oops in super and sub classes are together") \ |
| 0 | 1165 \ |
| 1166 product(bool, CompactFields, true, \ | |
| 1167 "Allocate nonstatic fields in gaps between previous fields") \ | |
| 1168 \ | |
| 1169 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
| 1170 "Print how many words were saved with CompactFields") \ | |
| 1171 \ | |
| 1172 product(bool, UseBiasedLocking, true, \ | |
| 1173 "Enable biased locking in JVM") \ | |
| 1174 \ | |
| 1175 product(intx, BiasedLockingStartupDelay, 4000, \ | |
| 1176 "Number of milliseconds to wait before enabling biased locking") \ | |
| 1177 \ | |
| 1178 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
| 1179 "Print statistics of biased locking in JVM") \ | |
| 1180 \ | |
| 1181 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
| 1182 "Threshold of number of revocations per type to try to " \ | |
| 1183 "rebias all objects in the heap of that type") \ | |
| 1184 \ | |
| 1185 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
| 1186 "Threshold of number of revocations per type to permanently " \ | |
| 1187 "revoke biases of all objects in the heap of that type") \ | |
| 1188 \ | |
| 1189 product(intx, BiasedLockingDecayTime, 25000, \ | |
| 1190 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
| 1191 "type after previous bulk rebias") \ | |
| 1192 \ | |
| 1193 /* tracing */ \ | |
| 1194 \ | |
| 1195 notproduct(bool, TraceRuntimeCalls, false, \ | |
| 1196 "Trace run-time calls") \ | |
| 1197 \ | |
| 1198 develop(bool, TraceJNICalls, false, \ | |
| 1199 "Trace JNI calls") \ | |
| 1200 \ | |
| 1201 notproduct(bool, TraceJVMCalls, false, \ | |
| 1202 "Trace JVM calls") \ | |
| 1203 \ | |
|
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|
1204 product(ccstr, TraceJVMTI, NULL, \ |
| 0 | 1205 "Trace flags for JVMTI functions and events") \ |
| 1206 \ | |
| 1207 /* This option can change an EMCP method into an obsolete method. */ \ | |
| 1208 /* This can affect tests that except specific methods to be EMCP. */ \ | |
| 1209 /* This option should be used with caution. */ \ | |
| 1210 product(bool, StressLdcRewrite, false, \ | |
| 1211 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
| 1212 \ | |
| 1213 product(intx, TraceRedefineClasses, 0, \ | |
| 1214 "Trace level for JVMTI RedefineClasses") \ | |
| 1215 \ | |
| 1574 | 1216 develop(bool, StressMethodComparator, false, \ |
| 1217 "run the MethodComparator on all loaded methods") \ | |
| 1218 \ | |
| 0 | 1219 /* change to false by default sometime after Mustang */ \ |
| 1220 product(bool, VerifyMergedCPBytecodes, true, \ | |
| 1221 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
| 1222 \ | |
| 1223 develop(bool, TraceJNIHandleAllocation, false, \ | |
| 1224 "Trace allocation/deallocation of JNI handle blocks") \ | |
| 1225 \ | |
| 1226 develop(bool, TraceThreadEvents, false, \ | |
| 1227 "Trace all thread events") \ | |
| 1228 \ | |
| 1229 develop(bool, TraceBytecodes, false, \ | |
| 1230 "Trace bytecode execution") \ | |
| 1231 \ | |
| 1232 develop(bool, TraceClassInitialization, false, \ | |
| 1233 "Trace class initialization") \ | |
| 1234 \ | |
| 1235 develop(bool, TraceExceptions, false, \ | |
| 1236 "Trace exceptions") \ | |
| 1237 \ | |
| 1238 develop(bool, TraceICs, false, \ | |
| 1239 "Trace inline cache changes") \ | |
| 1240 \ | |
| 1241 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
| 1242 "Trace method invocation counter overflow") \ | |
| 1243 \ | |
| 1244 develop(bool, TraceInlineCacheClearing, false, \ | |
| 1245 "Trace clearing of inline caches in nmethods") \ | |
| 1246 \ | |
| 1247 develop(bool, TraceDependencies, false, \ | |
| 1248 "Trace dependencies") \ | |
| 1249 \ | |
| 1250 develop(bool, VerifyDependencies, trueInDebug, \ | |
| 1251 "Exercise and verify the compilation dependency mechanism") \ | |
| 1252 \ | |
| 1253 develop(bool, TraceNewOopMapGeneration, false, \ | |
| 1254 "Trace OopMapGeneration") \ | |
| 1255 \ | |
| 1256 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
| 1257 "Trace OopMapGeneration: print detailed cell states") \ | |
| 1258 \ | |
| 1259 develop(bool, TimeOopMap, false, \ | |
| 1260 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
| 1261 \ | |
| 1262 develop(bool, TimeOopMap2, false, \ | |
| 1263 "Time calls to GenerateOopMap::compute_map() individually") \ | |
| 1264 \ | |
| 1265 develop(bool, TraceMonitorMismatch, false, \ | |
| 1266 "Trace monitor matching failures during OopMapGeneration") \ | |
| 1267 \ | |
| 1268 develop(bool, TraceOopMapRewrites, false, \ | |
| 1269 "Trace rewritting of method oops during oop map generation") \ | |
| 1270 \ | |
| 1271 develop(bool, TraceSafepoint, false, \ | |
| 1272 "Trace safepoint operations") \ | |
| 1273 \ | |
| 1274 develop(bool, TraceICBuffer, false, \ | |
| 1275 "Trace usage of IC buffer") \ | |
| 1276 \ | |
| 1277 develop(bool, TraceCompiledIC, false, \ | |
| 1278 "Trace changes of compiled IC") \ | |
| 1279 \ | |
| 1280 notproduct(bool, TraceZapDeadLocals, false, \ | |
| 1281 "Trace zapping dead locals") \ | |
| 1282 \ | |
| 1283 develop(bool, TraceStartupTime, false, \ | |
| 1284 "Trace setup time") \ | |
| 1285 \ | |
| 1286 product(ccstr, HPILibPath, NULL, \ | |
| 1287 "Specify alternate path to HPI library") \ | |
| 1288 \ | |
| 1289 develop(bool, TraceProtectionDomainVerification, false, \ | |
| 1290 "Trace protection domain verifcation") \ | |
| 1291 \ | |
| 1292 develop(bool, TraceClearedExceptions, false, \ | |
| 1293 "Prints when an exception is forcibly cleared") \ | |
| 1294 \ | |
| 1295 product(bool, TraceClassResolution, false, \ | |
| 1296 "Trace all constant pool resolutions (for debugging)") \ | |
| 1297 \ | |
| 1298 product(bool, TraceBiasedLocking, false, \ | |
| 1299 "Trace biased locking in JVM") \ | |
| 1300 \ | |
| 1301 product(bool, TraceMonitorInflation, false, \ | |
| 1302 "Trace monitor inflation in JVM") \ | |
| 1303 \ | |
| 1304 /* assembler */ \ | |
| 1305 product(bool, Use486InstrsOnly, false, \ | |
| 1306 "Use 80486 Compliant instruction subset") \ | |
| 1307 \ | |
| 1308 /* gc */ \ | |
| 1309 \ | |
| 1310 product(bool, UseSerialGC, false, \ | |
|
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1311 "Use the serial garbage collector") \ |
|
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|
1312 \ |
|
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|
1313 product(bool, UseG1GC, false, \ |
|
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|
1314 "Use the Garbage-First garbage collector") \ |
| 0 | 1315 \ |
| 1316 product(bool, UseParallelGC, false, \ | |
| 1317 "Use the Parallel Scavenge garbage collector") \ | |
| 1318 \ | |
| 1319 product(bool, UseParallelOldGC, false, \ | |
| 1320 "Use the Parallel Old garbage collector") \ | |
| 1321 \ | |
| 1322 product(bool, UseParallelOldGCCompacting, true, \ | |
| 1323 "In the Parallel Old garbage collector use parallel compaction") \ | |
| 1324 \ | |
| 1325 product(bool, UseParallelDensePrefixUpdate, true, \ | |
| 1326 "In the Parallel Old garbage collector use parallel dense" \ | |
| 1327 " prefix update") \ | |
| 1328 \ | |
| 1329 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
| 1330 "How often should we maximally compact the heap (not allowing " \ | |
| 1331 "any dead space)") \ | |
| 1332 \ | |
| 1333 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
| 1334 "The collection count for the first maximum compaction") \ | |
| 1335 \ | |
| 1336 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
| 1337 "In the Parallel Old garbage collector maximum compaction for " \ | |
| 1338 "a system GC") \ | |
| 1339 \ | |
| 1340 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
| 1341 "The mean used by the par compact dead wood" \ | |
| 1342 "limiter (a number between 0-100).") \ | |
| 1343 \ | |
| 1344 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
| 1345 "The standard deviation used by the par compact dead wood" \ | |
| 1346 "limiter (a number between 0-100).") \ | |
| 1347 \ | |
| 1348 product(bool, UseParallelOldGCDensePrefix, true, \ | |
| 1349 "Use a dense prefix with the Parallel Old garbage collector") \ | |
| 1350 \ | |
| 1351 product(uintx, ParallelGCThreads, 0, \ | |
| 1352 "Number of parallel threads parallel gc will use") \ | |
| 1353 \ | |
|
483
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|
1354 develop(bool, ParallelOldGCSplitALot, false, \ |
|
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|
1355 "Provoke splitting (copying data from a young gen space to" \ |
|
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|
1356 "multiple destination spaces)") \ |
|
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|
1357 \ |
|
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|
1358 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
|
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|
1359 "How often to provoke splitting a young gen space") \ |
| 0 | 1360 \ |
|
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1361 develop(bool, TraceRegionTasksQueuing, false, \ |
|
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|
1362 "Trace the queuing of the region tasks") \ |
| 0 | 1363 \ |
| 1284 | 1364 product(uintx, ConcGCThreads, 0, \ |
| 1365 "Number of threads concurrent gc will use") \ | |
|
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1366 \ |
| 0 | 1367 product(uintx, YoungPLABSize, 4096, \ |
| 1368 "Size of young gen promotion labs (in HeapWords)") \ | |
| 1369 \ | |
| 1370 product(uintx, OldPLABSize, 1024, \ | |
| 1371 "Size of old gen promotion labs (in HeapWords)") \ | |
| 1372 \ | |
| 1373 product(uintx, GCTaskTimeStampEntries, 200, \ | |
| 1374 "Number of time stamp entries per gc worker thread") \ | |
| 1375 \ | |
| 1376 product(bool, AlwaysTenure, false, \ | |
| 1377 "Always tenure objects in eden. (ParallelGC only)") \ | |
| 1378 \ | |
| 1379 product(bool, NeverTenure, false, \ | |
| 1064 | 1380 "Never tenure objects in eden, May tenure on overflow " \ |
| 1381 "(ParallelGC only)") \ | |
| 0 | 1382 \ |
| 1383 product(bool, ScavengeBeforeFullGC, true, \ | |
| 1064 | 1384 "Scavenge youngest generation before each full GC, " \ |
| 1385 "used with UseParallelGC") \ | |
| 0 | 1386 \ |
| 1387 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
| 1388 "Allow scavenges to occur when to_space contains objects.") \ | |
| 1389 \ | |
| 1390 product(bool, UseConcMarkSweepGC, false, \ | |
| 1391 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
| 1392 \ | |
| 1393 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
| 1394 "A System.gc() request invokes a concurrent collection;" \ | |
| 1395 " (effective only when UseConcMarkSweepGC)") \ | |
| 1396 \ | |
| 1397 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
| 1064 | 1398 "A System.gc() request invokes a concurrent collection and " \ |
| 1399 "also unloads classes during such a concurrent gc cycle " \ | |
| 1400 "(effective only when UseConcMarkSweepGC)") \ | |
| 0 | 1401 \ |
|
1520
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|
1402 product(bool, GCLockerInvokesConcurrent, false, \ |
|
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|
1403 "The exit of a JNI CS necessitating a scavenge also" \ |
|
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|
1404 " kicks off a bkgrd concurrent collection") \ |
|
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|
1405 \ |
|
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|
1406 product(uintx, GCLockerEdenExpansionPercent, 5, \ |
|
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|
1407 "How much the GC can expand the eden by while the GC locker " \ |
|
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|
1408 "is active (as a percentage)") \ |
|
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|
1409 \ |
| 0 | 1410 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
| 1411 "Use Adaptive Free Lists in the CMS generation") \ | |
| 1412 \ | |
| 1413 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
| 1414 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
| 1415 \ | |
| 1416 develop(bool, RotateCMSCollectionTypes, false, \ | |
| 1417 "Rotate the CMS collections among concurrent and STW") \ | |
| 1418 \ | |
| 1419 product(bool, UseCMSBestFit, true, \ | |
| 1420 "Use CMS best fit allocation strategy") \ | |
| 1421 \ | |
| 1422 product(bool, UseCMSCollectionPassing, true, \ | |
| 1423 "Use passing of collection from background to foreground") \ | |
| 1424 \ | |
| 1425 product(bool, UseParNewGC, false, \ | |
| 1426 "Use parallel threads in the new generation.") \ | |
| 1427 \ | |
| 1428 product(bool, ParallelGCVerbose, false, \ | |
| 1429 "Verbose output for parallel GC.") \ | |
| 1430 \ | |
| 1431 product(intx, ParallelGCBufferWastePct, 10, \ | |
| 1432 "wasted fraction of parallel allocation buffer.") \ | |
| 1433 \ | |
| 1434 product(bool, ParallelGCRetainPLAB, true, \ | |
| 1435 "Retain parallel allocation buffers across scavenges.") \ | |
| 1436 \ | |
| 1437 product(intx, TargetPLABWastePct, 10, \ | |
| 1438 "target wasted space in last buffer as pct of overall allocation")\ | |
| 1439 \ | |
| 1440 product(uintx, PLABWeight, 75, \ | |
| 1441 "Percentage (0-100) used to weight the current sample when" \ | |
| 1442 "computing exponentially decaying average for ResizePLAB.") \ | |
| 1443 \ | |
| 1444 product(bool, ResizePLAB, true, \ | |
| 1445 "Dynamically resize (survivor space) promotion labs") \ | |
| 1446 \ | |
| 1447 product(bool, PrintPLAB, false, \ | |
| 1448 "Print (survivor space) promotion labs sizing decisions") \ | |
| 1449 \ | |
| 1450 product(intx, ParGCArrayScanChunk, 50, \ | |
| 1451 "Scan a subset and push remainder, if array is bigger than this") \ | |
| 1452 \ | |
| 695 | 1453 product(bool, ParGCUseLocalOverflow, false, \ |
| 1454 "Instead of a global overflow list, use local overflow stacks") \ | |
| 1455 \ | |
|
679
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|
1456 product(bool, ParGCTrimOverflow, true, \ |
| 695 | 1457 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ |
|
679
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|
1458 \ |
| 534 | 1459 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
| 1460 "Whether we should simulate work queue overflow in ParNew") \ | |
| 1461 \ | |
| 1462 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
| 1064 | 1463 "An `interval' counter that determines how frequently " \ |
| 1464 "we simulate overflow; a smaller number increases frequency") \ | |
| 534 | 1465 \ |
| 1466 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
| 0 | 1467 "The desired number of objects to claim from the overflow list") \ |
| 1468 \ | |
|
1145
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1469 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
| 0 | 1470 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
| 1471 "parallel GC.") \ | |
| 1472 \ | |
|
1145
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1473 product(uintx, OldPLABWeight, 50, \ |
|
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1474 "Percentage (0-100) used to weight the current sample when" \ |
|
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1475 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ |
|
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|
1476 \ |
|
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1477 product(bool, ResizeOldPLAB, true, \ |
|
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|
1478 "Dynamically resize (old gen) promotion labs") \ |
|
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|
1479 \ |
|
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1480 product(bool, PrintOldPLAB, false, \ |
|
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|
1481 "Print (old gen) promotion labs sizing decisions") \ |
|
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|
1482 \ |
|
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1483 product(uintx, CMSOldPLABMin, 16, \ |
|
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|
1484 "Min size of CMS gen promotion lab caches per worker per blksize")\ |
|
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|
1485 \ |
|
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|
1486 product(uintx, CMSOldPLABMax, 1024, \ |
|
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|
1487 "Max size of CMS gen promotion lab caches per worker per blksize")\ |
|
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|
1488 \ |
|
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1489 product(uintx, CMSOldPLABNumRefills, 4, \ |
|
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|
1490 "Nominal number of refills of CMS gen promotion lab cache" \ |
|
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changeset
|
1491 " per worker per block size") \ |
|
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|
1492 \ |
|
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|
1493 product(bool, CMSOldPLABResizeQuicker, false, \ |
|
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1494 "Whether to react on-the-fly during a scavenge to a sudden" \ |
|
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|
1495 " change in block demand rate") \ |
|
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|
1496 \ |
|
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|
1497 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
|
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|
1498 "The tolerance of the phase-change detector for on-the-fly" \ |
|
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|
1499 " PLAB resizing during a scavenge") \ |
|
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|
1500 \ |
|
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|
1501 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
|
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|
1502 "The gain in the feedback loop for on-the-fly PLAB resizing" \ |
|
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1503 " during a scavenge") \ |
|
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|
1504 \ |
|
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|
1505 product(uintx, CMSOldPLABReactivityCeiling, 10, \ |
|
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|
1506 "The clamping of the gain in the feedback loop for on-the-fly" \ |
|
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1507 " PLAB resizing during a scavenge") \ |
|
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|
1508 \ |
| 0 | 1509 product(bool, AlwaysPreTouch, false, \ |
| 1510 "It forces all freshly committed pages to be pre-touched.") \ | |
| 1511 \ | |
| 1512 product(bool, CMSUseOldDefaults, false, \ | |
| 1064 | 1513 "A flag temporarily introduced to allow reverting to some " \ |
| 1514 "older default settings; older as of 6.0") \ | |
| 0 | 1515 \ |
| 1516 product(intx, CMSYoungGenPerWorker, 16*M, \ | |
| 1517 "The amount of young gen chosen by default per GC worker " \ | |
| 1064 | 1518 "thread available") \ |
| 0 | 1519 \ |
|
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|
1520 product(bool, GCOverheadReporting, false, \ |
|
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|
1521 "Enables the GC overhead reporting facility") \ |
|
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|
1522 \ |
|
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1523 product(intx, GCOverheadReportingPeriodMS, 100, \ |
|
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1524 "Reporting period for conc GC overhead reporting, in ms ") \ |
|
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|
1525 \ |
| 0 | 1526 product(bool, CMSIncrementalMode, false, \ |
| 1527 "Whether CMS GC should operate in \"incremental\" mode") \ | |
| 1528 \ | |
| 1529 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
| 1530 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
| 1531 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
| 1532 "value") \ | |
| 1533 \ | |
| 1534 product(bool, CMSIncrementalPacing, true, \ | |
| 1535 "Whether the CMS incremental mode duty cycle should be " \ | |
| 1536 "automatically adjusted") \ | |
| 1537 \ | |
| 1538 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
| 1064 | 1539 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ |
| 1540 "enabled (a percentage, 0-100)") \ | |
| 0 | 1541 \ |
| 1542 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
| 1064 | 1543 "Percentage (0-100) used to add conservatism when computing the " \ |
| 1544 "duty cycle") \ | |
| 0 | 1545 \ |
| 1546 product(uintx, CMSIncrementalOffset, 0, \ | |
| 1547 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
| 1064 | 1548 " is shifted to the right within the period between young GCs") \ |
| 0 | 1549 \ |
|
1145
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1550 product(uintx, CMSExpAvgFactor, 50, \ |
|
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1551 "Percentage (0-100) used to weight the current sample when" \ |
|
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|
1552 "computing exponential averages for CMS statistics.") \ |
|
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|
1553 \ |
|
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|
1554 product(uintx, CMS_FLSWeight, 75, \ |
|
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|
1555 "Percentage (0-100) used to weight the current sample when" \ |
|
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1556 "computing exponentially decating averages for CMS FLS statistics.") \ |
|
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|
1557 \ |
|
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|
1558 product(uintx, CMS_FLSPadding, 1, \ |
|
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|
1559 "The multiple of deviation from mean to use for buffering" \ |
| 0 | 1560 "against volatility in free list demand.") \ |
| 1561 \ | |
| 1562 product(uintx, FLSCoalescePolicy, 2, \ | |
| 1563 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
| 1564 \ | |
|
1145
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1565 product(bool, FLSAlwaysCoalesceLarge, false, \ |
|
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1566 "CMS: Larger free blocks are always available for coalescing") \ |
|
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|
1567 \ |
|
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|
1568 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
|
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1569 "CMS: the smaller the percentage the greater the coalition force")\ |
|
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|
1570 \ |
|
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|
1571 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
|
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|
1572 "CMS: the factor by which to inflate estimated demand of small" \ |
|
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1573 " block sizes to prevent coalescing with an adjoining block") \ |
|
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|
1574 \ |
|
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|
1575 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
|
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|
1576 "CMS: the factor by which to inflate estimated demand of large" \ |
|
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|
1577 " block sizes to prevent coalescing with an adjoining block") \ |
|
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|
1578 \ |
|
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|
1579 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
|
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|
1580 "CMS: the factor by which to inflate estimated demand of small" \ |
|
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|
1581 " block sizes to prevent splitting to supply demand for smaller" \ |
|
e018e6884bd8
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|
1582 " blocks") \ |
|
e018e6884bd8
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|
1583 \ |
|
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|
1584 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
|
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|
1585 "CMS: the factor by which to inflate estimated demand of large" \ |
|
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|
1586 " block sizes to prevent splitting to supply demand for smaller" \ |
|
e018e6884bd8
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|
1587 " blocks") \ |
|
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|
1588 \ |
|
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|
1589 product(bool, CMSExtrapolateSweep, false, \ |
|
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|
1590 "CMS: cushion for block demand during sweep") \ |
|
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|
1591 \ |
|
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|
1592 product(uintx, CMS_SweepWeight, 75, \ |
| 1064 | 1593 "Percentage (0-100) used to weight the current sample when " \ |
| 1594 "computing exponentially decaying average for inter-sweep " \ | |
| 1595 "duration") \ | |
| 0 | 1596 \ |
|
1145
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|
1597 product(uintx, CMS_SweepPadding, 1, \ |
| 1064 | 1598 "The multiple of deviation from mean to use for buffering " \ |
| 0 | 1599 "against volatility in inter-sweep duration.") \ |
| 1600 \ | |
| 1601 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
| 1602 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
| 1064 | 1603 "duration exceeds this threhold in milliseconds") \ |
| 0 | 1604 \ |
| 1605 develop(bool, CMSTraceIncrementalMode, false, \ | |
| 1606 "Trace CMS incremental mode") \ | |
| 1607 \ | |
| 1608 develop(bool, CMSTraceIncrementalPacing, false, \ | |
| 1609 "Trace CMS incremental mode pacing computation") \ | |
| 1610 \ | |
| 1611 develop(bool, CMSTraceThreadState, false, \ | |
| 1612 "Trace the CMS thread state (enable the trace_state() method)") \ | |
| 1613 \ | |
| 1614 product(bool, CMSClassUnloadingEnabled, false, \ | |
| 1615 "Whether class unloading enabled when using CMS GC") \ | |
| 1616 \ | |
|
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|
1617 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
|
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diff
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|
1618 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
|
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diff
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|
1619 " for which classes may not be unloaded") \ |
|
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|
1620 \ |
| 0 | 1621 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
| 1622 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
| 1623 \ | |
| 1624 product(bool, UseCMSCompactAtFullCollection, true, \ | |
| 1625 "Use mark sweep compact at full collections") \ | |
| 1626 \ | |
| 1627 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
| 1628 "Number of CMS full collection done before compaction if > 0") \ | |
| 1629 \ | |
| 1630 develop(intx, CMSDictionaryChoice, 0, \ | |
| 1631 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
| 1632 \ | |
| 1633 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
|
1777
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|
1634 "Replenish an indexed free list with this number of chunks") \ |
| 0 | 1635 \ |
|
1145
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1636 product(bool, CMSReplenishIntermediate, true, \ |
|
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|
1637 "Replenish all intermediate free-list caches") \ |
|
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|
1638 \ |
|
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|
1639 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
|
1777
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|
1640 "When satisfying batched demand, split blocks from the " \ |
|
1145
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|
1641 "IndexedFreeList whose size is a multiple of requested size") \ |
|
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|
1642 \ |
| 0 | 1643 product(bool, CMSLoopWarn, false, \ |
| 1644 "Warn in case of excessive CMS looping") \ | |
| 1645 \ | |
| 1646 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
| 1647 "Whether preserved marks should be restored early") \ | |
| 1648 \ | |
| 1284 | 1649 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
| 1650 "Size of marking stack") \ | |
| 1651 \ | |
| 1652 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
| 1653 "Max size of marking stack") \ | |
| 0 | 1654 \ |
| 1655 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
| 1656 "Whether we should simulate frequent marking stack / work queue" \ | |
| 1657 " overflow") \ | |
| 1658 \ | |
| 534 | 1659 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
| 1660 "An `interval' counter that determines how frequently" \ | |
| 0 | 1661 " we simulate overflow; a smaller number increases frequency") \ |
| 1662 \ | |
| 1663 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
| 1664 "(Temporary, subject to experimentation)" \ | |
| 1665 "Maximum number of abortable preclean iterations, if > 0") \ | |
| 1666 \ | |
| 1667 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
| 1668 "(Temporary, subject to experimentation)" \ | |
| 1669 "Maximum time in abortable preclean in ms") \ | |
| 1670 \ | |
| 1671 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
| 1672 "(Temporary, subject to experimentation)" \ | |
| 1673 "Nominal minimum work per abortable preclean iteration") \ | |
| 1674 \ | |
|
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|
1675 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
| 0 | 1676 "(Temporary, subject to experimentation)" \ |
| 1677 " Time that we sleep between iterations when not given" \ | |
| 1678 " enough work per iteration") \ | |
| 1679 \ | |
| 1680 product(uintx, CMSRescanMultiple, 32, \ | |
| 1681 "Size (in cards) of CMS parallel rescan task") \ | |
| 1682 \ | |
| 1683 product(uintx, CMSConcMarkMultiple, 32, \ | |
| 1684 "Size (in cards) of CMS concurrent MT marking task") \ | |
| 1685 \ | |
| 1686 product(uintx, CMSRevisitStackSize, 1*M, \ | |
| 1687 "Size of CMS KlassKlass revisit stack") \ | |
| 1688 \ | |
| 1689 product(bool, CMSAbortSemantics, false, \ | |
| 1690 "Whether abort-on-overflow semantics is implemented") \ | |
| 1691 \ | |
| 1692 product(bool, CMSParallelRemarkEnabled, true, \ | |
| 1693 "Whether parallel remark enabled (only if ParNewGC)") \ | |
| 1694 \ | |
| 1695 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
| 1696 "Whether parallel remark of survivor space" \ | |
| 1697 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
| 1698 \ | |
| 1699 product(bool, CMSPLABRecordAlways, true, \ | |
| 1700 "Whether to always record survivor space PLAB bdries" \ | |
| 1701 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
| 1702 \ | |
| 1703 product(bool, CMSConcurrentMTEnabled, true, \ | |
| 1704 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
| 1705 \ | |
| 1706 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
| 1707 "Whether concurrent precleaning enabled in perm gen" \ | |
| 1708 " (effective only when CMSPrecleaningEnabled is true)") \ | |
| 1709 \ | |
| 1710 product(bool, CMSPrecleaningEnabled, true, \ | |
| 1711 "Whether concurrent precleaning enabled") \ | |
| 1712 \ | |
| 1713 product(uintx, CMSPrecleanIter, 3, \ | |
| 1714 "Maximum number of precleaning iteration passes") \ | |
| 1715 \ | |
| 1716 product(uintx, CMSPrecleanNumerator, 2, \ | |
| 1717 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
| 1718 " ratio") \ | |
| 1719 \ | |
| 1720 product(uintx, CMSPrecleanDenominator, 3, \ | |
| 1721 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
| 1722 " ratio") \ | |
| 1723 \ | |
|
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|
1724 product(bool, CMSPrecleanRefLists1, true, \ |
| 0 | 1725 "Preclean ref lists during (initial) preclean phase") \ |
| 1726 \ | |
| 1727 product(bool, CMSPrecleanRefLists2, false, \ | |
| 1728 "Preclean ref lists during abortable preclean phase") \ | |
| 1729 \ | |
| 1730 product(bool, CMSPrecleanSurvivors1, false, \ | |
| 1731 "Preclean survivors during (initial) preclean phase") \ | |
| 1732 \ | |
| 1733 product(bool, CMSPrecleanSurvivors2, true, \ | |
| 1734 "Preclean survivors during abortable preclean phase") \ | |
| 1735 \ | |
| 1736 product(uintx, CMSPrecleanThreshold, 1000, \ | |
| 1737 "Don't re-iterate if #dirty cards less than this") \ | |
| 1738 \ | |
| 1739 product(bool, CMSCleanOnEnter, true, \ | |
| 1740 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
| 1741 \ | |
| 1742 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
| 1743 "Choose variant (1,2) of verification following remark") \ | |
| 1744 \ | |
| 1745 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
| 1746 "If Eden used is below this value, don't try to schedule remark") \ | |
| 1747 \ | |
| 1748 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
| 1749 "The Eden occupancy % at which to try and schedule remark pause") \ | |
| 1750 \ | |
| 1751 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
| 1752 "Start sampling Eden top at least before yg occupancy reaches" \ | |
| 1753 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
| 1754 \ | |
| 1755 product(uintx, CMSSamplingGrain, 16*K, \ | |
| 1756 "The minimum distance between eden samples for CMS (see above)") \ | |
| 1757 \ | |
| 1758 product(bool, CMSScavengeBeforeRemark, false, \ | |
| 1759 "Attempt scavenge before the CMS remark step") \ | |
| 1760 \ | |
| 1761 develop(bool, CMSTraceSweeper, false, \ | |
| 1762 "Trace some actions of the CMS sweeper") \ | |
| 1763 \ | |
| 1764 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
| 1765 "Don't drain below this size per parallel worker/thief") \ | |
| 1766 \ | |
|
1887
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|
1767 manageable(intx, CMSWaitDuration, 2000, \ |
| 0 | 1768 "Time in milliseconds that CMS thread waits for young GC") \ |
| 1769 \ | |
| 1770 product(bool, CMSYield, true, \ | |
| 1771 "Yield between steps of concurrent mark & sweep") \ | |
| 1772 \ | |
| 1773 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
| 1774 "Bitmap operations should process at most this many bits" \ | |
| 1775 "between yields") \ | |
| 1776 \ | |
|
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|
1777 product(bool, CMSDumpAtPromotionFailure, false, \ |
|
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1778 "Dump useful information about the state of the CMS old " \ |
|
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|
1779 " generation upon a promotion failure.") \ |
|
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|
1780 \ |
|
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|
1781 product(bool, CMSPrintChunksInDump, false, \ |
|
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1782 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
|
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1783 " more detailed information about the free chunks.") \ |
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|
1784 \ |
|
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|
1785 product(bool, CMSPrintObjectsInDump, false, \ |
|
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|
1786 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
|
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1787 " more detailed information about the allocated objects.") \ |
|
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|
1788 \ |
| 0 | 1789 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
| 1790 "Verify that all refs across the FLS boundary " \ | |
| 1791 " are to valid objects") \ | |
| 1792 \ | |
| 1793 diagnostic(bool, FLSVerifyLists, false, \ | |
| 1794 "Do lots of (expensive) FreeListSpace verification") \ | |
| 1795 \ | |
| 1796 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
| 1797 "Do lots of (expensive) FLS index table verification") \ | |
| 1798 \ | |
| 1799 develop(bool, FLSVerifyDictionary, false, \ | |
| 1800 "Do lots of (expensive) FLS dictionary verification") \ | |
| 1801 \ | |
| 1802 develop(bool, VerifyBlockOffsetArray, false, \ | |
| 1803 "Do (expensive!) block offset array verification") \ | |
| 1804 \ | |
|
1716
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1805 product(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
| 0 | 1806 "Maintain _unallocated_block in BlockOffsetArray" \ |
| 1807 " (currently applicable only to CMS collector)") \ | |
| 1808 \ | |
| 1809 develop(bool, TraceCMSState, false, \ | |
| 1810 "Trace the state of the CMS collection") \ | |
| 1811 \ | |
| 1812 product(intx, RefDiscoveryPolicy, 0, \ | |
| 1813 "Whether reference-based(0) or referent-based(1)") \ | |
| 1814 \ | |
| 1815 product(bool, ParallelRefProcEnabled, false, \ | |
| 1816 "Enable parallel reference processing whenever possible") \ | |
| 1817 \ | |
| 1818 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
| 1819 "Enable balancing of reference processing queues") \ | |
| 1820 \ | |
| 1821 product(intx, CMSTriggerRatio, 80, \ | |
| 1822 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
| 1064 | 1823 "allocated before a CMS collection cycle commences") \ |
| 0 | 1824 \ |
|
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1825 product(intx, CMSTriggerPermRatio, 80, \ |
| 1064 | 1826 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ |
| 1827 "is allocated before a CMS collection cycle commences, that " \ | |
| 1828 "also collects the perm generation") \ | |
|
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|
1829 \ |
|
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|
1830 product(uintx, CMSBootstrapOccupancy, 50, \ |
| 0 | 1831 "Percentage CMS generation occupancy at which to " \ |
| 1064 | 1832 "initiate CMS collection for bootstrapping collection stats") \ |
| 0 | 1833 \ |
| 1834 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
| 1835 "Percentage CMS generation occupancy to start a CMS collection " \ | |
| 1064 | 1836 "cycle. A negative value means that CMSTriggerRatio is used") \ |
|
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|
1837 \ |
|
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1838 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
|
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1839 "Percentage of the (entire) heap occupancy to start a " \ |
|
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1840 "concurrent GC cycle. It us used by GCs that trigger a " \ |
|
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1841 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
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1842 "not just one of the generations (e.g., G1). A value of 0 " \ |
|
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1843 "denotes 'do constant GC cycles'.") \ |
|
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1844 \ |
|
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1845 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
| 1064 | 1846 "Percentage CMS perm generation occupancy to start a " \ |
| 1847 "CMScollection cycle. A negative value means that " \ | |
| 1848 "CMSTriggerPermRatio is used") \ | |
| 0 | 1849 \ |
| 1850 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
| 1851 "Only use occupancy as a crierion for starting a CMS collection") \ | |
| 1852 \ | |
|
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1853 product(intx, CMSIsTooFullPercentage, 98, \ |
| 1064 | 1854 "An absolute ceiling above which CMS will always consider the " \ |
| 1855 "perm gen ripe for collection") \ | |
|
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1856 \ |
| 0 | 1857 develop(bool, CMSTestInFreeList, false, \ |
| 1858 "Check if the coalesced range is already in the " \ | |
| 1064 | 1859 "free lists as claimed") \ |
| 0 | 1860 \ |
| 1861 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
| 1862 "Check that all the garbage collected was returned to the " \ | |
| 1863 "free lists.") \ | |
| 1864 \ | |
| 1865 notproduct(bool, ScavengeALot, false, \ | |
| 1866 "Force scavenge at every Nth exit from the runtime system " \ | |
| 1867 "(N=ScavengeALotInterval)") \ | |
| 1868 \ | |
| 1869 develop(bool, FullGCALot, false, \ | |
| 1870 "Force full gc at every Nth exit from the runtime system " \ | |
| 1871 "(N=FullGCALotInterval)") \ | |
| 1872 \ | |
| 1873 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
| 1874 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
| 1875 \ | |
|
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1876 product(bool, PrintPromotionFailure, false, \ |
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1877 "Print additional diagnostic information following " \ |
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1878 " promotion failure") \ |
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1879 \ |
| 0 | 1880 notproduct(bool, PromotionFailureALot, false, \ |
| 1881 "Use promotion failure handling on every youngest generation " \ | |
| 1882 "collection") \ | |
| 1883 \ | |
| 1884 develop(uintx, PromotionFailureALotCount, 1000, \ | |
| 1885 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
| 1886 "refill attempts (ParNew) or promotion attempts " \ | |
| 1887 "(other young collectors) ") \ | |
| 1888 \ | |
| 1889 develop(uintx, PromotionFailureALotInterval, 5, \ | |
| 1890 "Total collections between promotion failures alot") \ | |
| 1891 \ | |
|
1837
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1892 experimental(intx, WorkStealingSleepMillis, 1, \ |
| 0 | 1893 "Sleep time when sleep is used for yields") \ |
| 1894 \ | |
|
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1895 experimental(uintx, WorkStealingYieldsBeforeSleep, 1000, \ |
| 0 | 1896 "Number of yields before a sleep is done during workstealing") \ |
| 1897 \ | |
|
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1898 experimental(uintx, WorkStealingHardSpins, 4096, \ |
|
546
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1899 "Number of iterations in a spin loop between checks on " \ |
|
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1900 "time out of hard spin") \ |
|
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1901 \ |
|
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1902 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
|
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1903 "Ratio of hard spins to calls to yield") \ |
|
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1904 \ |
| 534 | 1905 product(uintx, PreserveMarkStackSize, 1024, \ |
| 1064 | 1906 "Size for stack used in promotion failure handling") \ |
| 0 | 1907 \ |
|
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1908 develop(uintx, ObjArrayMarkingStride, 512, \ |
|
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1909 "Number of ObjArray elements to push onto the marking stack" \ |
|
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1910 "before pushing a continuation entry") \ |
|
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|
1911 \ |
| 0 | 1912 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
| 1913 \ | |
| 1914 product_pd(bool, ResizeTLAB, \ | |
| 1915 "Dynamically resize tlab size for threads") \ | |
| 1916 \ | |
| 1917 product(bool, ZeroTLAB, false, \ | |
| 1918 "Zero out the newly created TLAB") \ | |
| 1919 \ | |
|
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1920 product(bool, FastTLABRefill, true, \ |
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1921 "Use fast TLAB refill code") \ |
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1922 \ |
| 0 | 1923 product(bool, PrintTLAB, false, \ |
| 1924 "Print various TLAB related information") \ | |
| 1925 \ | |
| 1926 product(bool, TLABStats, true, \ | |
| 1927 "Print various TLAB related information") \ | |
| 1928 \ | |
| 941 | 1929 product(bool, PrintRevisitStats, false, \ |
| 1930 "Print revisit (klass and MDO) stack related information") \ | |
| 1931 \ | |
| 0 | 1932 product_pd(bool, NeverActAsServerClassMachine, \ |
| 1933 "Never act like a server-class machine") \ | |
| 1934 \ | |
| 1935 product(bool, AlwaysActAsServerClassMachine, false, \ | |
| 1936 "Always act like a server-class machine") \ | |
| 1937 \ | |
| 1064 | 1938 product_pd(uint64_t, MaxRAM, \ |
| 1939 "Real memory size (in bytes) used to set maximum heap size") \ | |
| 1940 \ | |
| 1941 product(uintx, ErgoHeapSizeLimit, 0, \ | |
| 1942 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
| 1943 "MaxRAM / MaxRAMFraction") \ | |
| 1944 \ | |
| 1945 product(uintx, MaxRAMFraction, 4, \ | |
| 1946 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
| 1947 "size") \ | |
| 0 | 1948 \ |
| 1949 product(uintx, DefaultMaxRAMFraction, 4, \ | |
| 1064 | 1950 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
| 1951 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
| 1952 \ | |
| 1953 product(uintx, MinRAMFraction, 2, \ | |
| 1954 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
| 1955 "size on systems with small physical memory size") \ | |
| 1956 \ | |
| 1957 product(uintx, InitialRAMFraction, 64, \ | |
| 1958 "Fraction (1/n) of real memory used for initial heap size") \ | |
| 0 | 1959 \ |
| 1960 product(bool, UseAutoGCSelectPolicy, false, \ | |
| 1961 "Use automatic collection selection policy") \ | |
| 1962 \ | |
| 1963 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
| 1964 "Automatic GC selection pause threshhold in ms") \ | |
| 1965 \ | |
| 1966 product(bool, UseAdaptiveSizePolicy, true, \ | |
| 1967 "Use adaptive generation sizing policies") \ | |
| 1968 \ | |
| 1969 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
| 1970 "Use adaptive survivor sizing policies") \ | |
| 1971 \ | |
| 1972 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
| 1973 "Use adaptive young-old sizing policies at minor collections") \ | |
| 1974 \ | |
| 1975 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
| 1976 "Use adaptive young-old sizing policies at major collections") \ | |
| 1977 \ | |
| 1978 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
| 1979 "Use statistics from System.GC for adaptive size policy") \ | |
| 1980 \ | |
| 1981 product(bool, UseAdaptiveGCBoundary, false, \ | |
| 1982 "Allow young-old boundary to move") \ | |
| 1983 \ | |
| 1984 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
| 1985 "Trace young-old boundary moves") \ | |
| 1986 \ | |
| 1987 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
| 1988 "Resize the virtual spaces of the young or old generations") \ | |
| 1989 \ | |
| 1990 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
| 1991 "Policy for changeing generation size for throughput goals") \ | |
| 1992 \ | |
| 1993 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
| 1994 "Policy for changing generation size for pause goals") \ | |
| 1995 \ | |
| 1996 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
| 1997 "Adjust tenured generation to achive a minor pause goal") \ | |
| 1998 \ | |
| 1999 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
| 2000 "Adjust young generation to achive a major pause goal") \ | |
| 2001 \ | |
| 2002 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
| 2003 "Number of steps where heuristics is used before data is used") \ | |
| 2004 \ | |
| 2005 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
| 2006 "Number of collections before the adaptive sizing is started") \ | |
| 2007 \ | |
| 2008 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
| 1064 | 2009 "Collecton interval for printing information; zero => never") \ |
| 0 | 2010 \ |
| 2011 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
| 2012 "Use adaptive minimum footprint as a goal") \ | |
| 2013 \ | |
| 2014 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
| 2015 "Weight given to exponential resizing, between 0 and 100") \ | |
| 2016 \ | |
| 2017 product(uintx, AdaptiveTimeWeight, 25, \ | |
| 2018 "Weight given to time in adaptive policy, between 0 and 100") \ | |
| 2019 \ | |
| 2020 product(uintx, PausePadding, 1, \ | |
| 2021 "How much buffer to keep for pause time") \ | |
| 2022 \ | |
| 2023 product(uintx, PromotedPadding, 3, \ | |
| 2024 "How much buffer to keep for promotion failure") \ | |
| 2025 \ | |
| 2026 product(uintx, SurvivorPadding, 3, \ | |
| 2027 "How much buffer to keep for survivor overflow") \ | |
| 2028 \ | |
| 2029 product(uintx, AdaptivePermSizeWeight, 20, \ | |
| 2030 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
| 2031 \ | |
| 2032 product(uintx, PermGenPadding, 3, \ | |
| 2033 "How much buffer to keep for perm gen sizing") \ | |
| 2034 \ | |
| 2035 product(uintx, ThresholdTolerance, 10, \ | |
| 2036 "Allowed collection cost difference between generations") \ | |
| 2037 \ | |
| 2038 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
| 1064 | 2039 "If collection costs are within margin, reduce both by full " \ |
| 2040 "delta") \ | |
| 0 | 2041 \ |
| 2042 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
| 2043 "Adaptive size percentage change in young generation") \ | |
| 2044 \ | |
| 2045 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
| 2046 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
| 2047 \ | |
| 2048 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
| 2049 "Decay factor to YoungedGenerationSizeSupplement") \ | |
| 2050 \ | |
| 2051 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
| 2052 "Adaptive size percentage change in tenured generation") \ | |
| 2053 \ | |
| 2054 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
| 2055 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
| 2056 \ | |
| 2057 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
| 2058 "Decay factor to TenuredGenerationSizeIncrement") \ | |
| 2059 \ | |
| 1783 | 2060 product(uintx, MaxGCPauseMillis, max_uintx, \ |
| 751 | 2061 "Adaptive size policy maximum GC pause time goal in msec, " \ |
| 2062 "or (G1 Only) the max. GC time per MMU time slice") \ | |
| 2063 \ | |
|
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2064 product(uintx, GCPauseIntervalMillis, 0, \ |
| 751 | 2065 "Time slice for MMU specification") \ |
| 0 | 2066 \ |
| 2067 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
| 2068 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
| 2069 \ | |
| 2070 product(uintx, GCTimeRatio, 99, \ | |
| 2071 "Adaptive size policy application time to GC time ratio") \ | |
| 2072 \ | |
| 2073 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
| 2074 "Adaptive size scale down factor for shrinking") \ | |
| 2075 \ | |
| 2076 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
| 2077 "Adaptive size decays the major cost for long major intervals") \ | |
| 2078 \ | |
| 2079 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
| 2080 "Time scale over which major costs decay") \ | |
| 2081 \ | |
| 2082 product(uintx, MinSurvivorRatio, 3, \ | |
| 2083 "Minimum ratio of young generation/survivor space size") \ | |
| 2084 \ | |
| 2085 product(uintx, InitialSurvivorRatio, 8, \ | |
| 2086 "Initial ratio of eden/survivor space size") \ | |
| 2087 \ | |
| 2088 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
| 2089 "Estimate of footprint other than Java Heap") \ | |
| 2090 \ | |
| 2091 product(bool, UseGCOverheadLimit, true, \ | |
| 2092 "Use policy to limit of proportion of time spent in GC " \ | |
| 2093 "before an OutOfMemory error is thrown") \ | |
| 2094 \ | |
| 2095 product(uintx, GCTimeLimit, 98, \ | |
| 2096 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
| 2097 "error is thrown (used with GCHeapFreeLimit)") \ | |
| 2098 \ | |
| 2099 product(uintx, GCHeapFreeLimit, 2, \ | |
| 2100 "Minimum percentage of free space after a full GC before an " \ | |
| 2101 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
| 2102 \ | |
| 2103 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
| 2104 "Number of consecutive collections before gc time limit fires") \ | |
| 2105 \ | |
| 2106 product(bool, PrintAdaptiveSizePolicy, false, \ | |
| 2107 "Print information about AdaptiveSizePolicy") \ | |
| 2108 \ | |
| 2109 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
| 2110 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
| 2111 \ | |
| 2112 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
| 2113 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
| 2114 \ | |
| 2115 product(intx, PrefetchFieldsAhead, -1, \ | |
| 2116 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
| 2117 \ | |
| 2118 develop(bool, UsePrefetchQueue, true, \ | |
| 2119 "Use the prefetch queue during PS promotion") \ | |
| 2120 \ | |
| 2121 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
| 2122 "Verify system before exiting") \ | |
| 2123 \ | |
| 2124 diagnostic(bool, VerifyBeforeGC, false, \ | |
| 2125 "Verify memory system before GC") \ | |
| 2126 \ | |
| 2127 diagnostic(bool, VerifyAfterGC, false, \ | |
| 2128 "Verify memory system after GC") \ | |
| 2129 \ | |
| 2130 diagnostic(bool, VerifyDuringGC, false, \ | |
| 2131 "Verify memory system during GC (between phases)") \ | |
| 2132 \ | |
| 390 | 2133 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
| 2134 "Enable parallel memory system verification") \ | |
| 2135 \ | |
| 1166 | 2136 diagnostic(bool, DeferInitialCardMark, false, \ |
| 2137 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
| 2138 "may arise from new_pre_store_barrier") \ | |
| 2139 \ | |
| 0 | 2140 diagnostic(bool, VerifyRememberedSets, false, \ |
| 2141 "Verify GC remembered sets") \ | |
| 2142 \ | |
| 2143 diagnostic(bool, VerifyObjectStartArray, true, \ | |
| 2144 "Verify GC object start array if verify before/after") \ | |
| 2145 \ | |
| 2146 product(bool, DisableExplicitGC, false, \ | |
| 2147 "Tells whether calling System.gc() does a full GC") \ | |
| 2148 \ | |
| 2149 notproduct(bool, CheckMemoryInitialization, false, \ | |
| 2150 "Checks memory initialization") \ | |
| 2151 \ | |
| 2152 product(bool, CollectGen0First, false, \ | |
| 2153 "Collect youngest generation before each full GC") \ | |
| 2154 \ | |
| 2155 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
| 2156 "Bind CMS Thread to CPU if possible") \ | |
| 2157 \ | |
| 2158 diagnostic(uintx, CPUForCMSThread, 0, \ | |
| 2159 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
| 2160 \ | |
| 2161 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
| 2162 "Bind GCTaskThreads to CPUs if possible") \ | |
| 2163 \ | |
| 2164 product(bool, UseGCTaskAffinity, false, \ | |
| 2165 "Use worker affinity when asking for GCTasks") \ | |
| 2166 \ | |
| 2167 product(uintx, ProcessDistributionStride, 4, \ | |
| 2168 "Stride through processors when distributing processes") \ | |
| 2169 \ | |
| 2170 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
| 2171 "number of times the coordinator GC thread will sleep while " \ | |
| 2172 "yielding before giving up and resuming GC") \ | |
| 2173 \ | |
| 2174 product(uintx, CMSYieldSleepCount, 0, \ | |
| 2175 "number of times a GC thread (minus the coordinator) " \ | |
| 2176 "will sleep while yielding before giving up and resuming GC") \ | |
| 2177 \ | |
| 2178 /* gc tracing */ \ | |
| 2179 manageable(bool, PrintGC, false, \ | |
| 2180 "Print message at garbage collect") \ | |
| 2181 \ | |
| 2182 manageable(bool, PrintGCDetails, false, \ | |
| 2183 "Print more details at garbage collect") \ | |
| 2184 \ | |
| 2185 manageable(bool, PrintGCDateStamps, false, \ | |
| 2186 "Print date stamps at garbage collect") \ | |
| 2187 \ | |
| 2188 manageable(bool, PrintGCTimeStamps, false, \ | |
| 2189 "Print timestamps at garbage collect") \ | |
| 2190 \ | |
| 2191 product(bool, PrintGCTaskTimeStamps, false, \ | |
| 2192 "Print timestamps for individual gc worker thread tasks") \ | |
| 2193 \ | |
| 2194 develop(intx, ConcGCYieldTimeout, 0, \ | |
| 2195 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
| 2196 \ | |
| 2197 notproduct(bool, TraceMarkSweep, false, \ | |
| 2198 "Trace mark sweep") \ | |
| 2199 \ | |
| 2200 product(bool, PrintReferenceGC, false, \ | |
| 2201 "Print times spent handling reference objects during GC " \ | |
| 2202 " (enabled only when PrintGCDetails)") \ | |
| 2203 \ | |
| 2204 develop(bool, TraceReferenceGC, false, \ | |
| 2205 "Trace handling of soft/weak/final/phantom references") \ | |
| 2206 \ | |
| 2207 develop(bool, TraceFinalizerRegistration, false, \ | |
| 2208 "Trace registration of final references") \ | |
| 2209 \ | |
| 2210 notproduct(bool, TraceScavenge, false, \ | |
| 2211 "Trace scavenge") \ | |
| 2212 \ | |
| 2213 product_rw(bool, TraceClassLoading, false, \ | |
| 2214 "Trace all classes loaded") \ | |
| 2215 \ | |
| 2216 product(bool, TraceClassLoadingPreorder, false, \ | |
| 2217 "Trace all classes loaded in order referenced (not loaded)") \ | |
| 2218 \ | |
| 2219 product_rw(bool, TraceClassUnloading, false, \ | |
| 2220 "Trace unloading of classes") \ | |
| 2221 \ | |
| 2222 product_rw(bool, TraceLoaderConstraints, false, \ | |
| 2223 "Trace loader constraints") \ | |
| 2224 \ | |
| 2225 product(bool, TraceGen0Time, false, \ | |
| 2226 "Trace accumulated time for Gen 0 collection") \ | |
| 2227 \ | |
| 2228 product(bool, TraceGen1Time, false, \ | |
| 2229 "Trace accumulated time for Gen 1 collection") \ | |
| 2230 \ | |
| 2231 product(bool, PrintTenuringDistribution, false, \ | |
| 2232 "Print tenuring age information") \ | |
| 2233 \ | |
| 2234 product_rw(bool, PrintHeapAtGC, false, \ | |
| 2235 "Print heap layout before and after each GC") \ | |
| 2236 \ | |
|
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2237 product_rw(bool, PrintHeapAtGCExtended, false, \ |
|
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2238 "Prints extended information about the layout of the heap " \ |
|
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2239 "when -XX:+PrintHeapAtGC is set") \ |
|
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|
2240 \ |
| 0 | 2241 product(bool, PrintHeapAtSIGBREAK, true, \ |
| 2242 "Print heap layout in response to SIGBREAK") \ | |
| 2243 \ | |
|
615
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|
2244 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
|
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|
2245 "Print a class histogram before any major stop-world GC") \ |
|
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|
2246 \ |
|
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|
2247 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
|
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|
2248 "Print a class histogram after any major stop-world GC") \ |
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|
2249 \ |
| 0 | 2250 manageable(bool, PrintClassHistogram, false, \ |
| 2251 "Print a histogram of class instances") \ | |
| 2252 \ | |
| 2253 develop(bool, TraceWorkGang, false, \ | |
| 2254 "Trace activities of work gangs") \ | |
| 2255 \ | |
| 2256 product(bool, TraceParallelOldGCTasks, false, \ | |
| 2257 "Trace multithreaded GC activity") \ | |
| 2258 \ | |
| 2259 develop(bool, TraceBlockOffsetTable, false, \ | |
| 2260 "Print BlockOffsetTable maps") \ | |
| 2261 \ | |
| 2262 develop(bool, TraceCardTableModRefBS, false, \ | |
| 2263 "Print CardTableModRefBS maps") \ | |
| 2264 \ | |
| 2265 develop(bool, TraceGCTaskManager, false, \ | |
| 2266 "Trace actions of the GC task manager") \ | |
| 2267 \ | |
| 2268 develop(bool, TraceGCTaskQueue, false, \ | |
| 2269 "Trace actions of the GC task queues") \ | |
| 2270 \ | |
| 2271 develop(bool, TraceGCTaskThread, false, \ | |
| 2272 "Trace actions of the GC task threads") \ | |
| 2273 \ | |
| 2274 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
| 2275 "Print the time taken by each parallel old gc phase." \ | |
| 2276 "PrintGCDetails must also be enabled.") \ | |
| 2277 \ | |
| 2278 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
| 2279 "Trace parallel old gc marking phase") \ | |
| 2280 \ | |
| 2281 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
| 2282 "Trace parallel old gc summary phase") \ | |
| 2283 \ | |
| 2284 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
| 2285 "Trace parallel old gc compaction phase") \ | |
| 2286 \ | |
| 2287 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
| 2288 "Trace parallel old gc dense prefix computation") \ | |
| 2289 \ | |
| 2290 develop(bool, IgnoreLibthreadGPFault, false, \ | |
| 2291 "Suppress workaround for libthread GP fault") \ | |
| 2292 \ | |
|
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|
2293 product(bool, PrintJNIGCStalls, false, \ |
|
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|
2294 "Print diagnostic message when GC is stalled" \ |
|
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|
2295 "by JNI critical section") \ |
|
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|
2296 \ |
| 0 | 2297 /* JVMTI heap profiling */ \ |
| 2298 \ | |
| 2299 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
| 2300 "Trace JVMTI object tagging calls") \ | |
| 2301 \ | |
| 2302 diagnostic(bool, VerifyBeforeIteration, false, \ | |
| 2303 "Verify memory system before JVMTI iteration") \ | |
| 2304 \ | |
| 2305 /* compiler interface */ \ | |
| 2306 \ | |
| 2307 develop(bool, CIPrintCompilerName, false, \ | |
| 2308 "when CIPrint is active, print the name of the active compiler") \ | |
| 2309 \ | |
| 2310 develop(bool, CIPrintCompileQueue, false, \ | |
| 2311 "display the contents of the compile queue whenever a " \ | |
| 2312 "compilation is enqueued") \ | |
| 2313 \ | |
| 2314 develop(bool, CIPrintRequests, false, \ | |
| 2315 "display every request for compilation") \ | |
| 2316 \ | |
| 2317 product(bool, CITime, false, \ | |
| 2318 "collect timing information for compilation") \ | |
| 2319 \ | |
| 2320 develop(bool, CITimeEach, false, \ | |
| 2321 "display timing information after each successful compilation") \ | |
| 2322 \ | |
| 2323 develop(bool, CICountOSR, true, \ | |
| 2324 "use a separate counter when assigning ids to osr compilations") \ | |
| 2325 \ | |
| 2326 develop(bool, CICompileNatives, true, \ | |
| 2327 "compile native methods if supported by the compiler") \ | |
| 2328 \ | |
| 2329 develop_pd(bool, CICompileOSR, \ | |
| 2330 "compile on stack replacement methods if supported by the " \ | |
| 2331 "compiler") \ | |
| 2332 \ | |
| 2333 develop(bool, CIPrintMethodCodes, false, \ | |
| 2334 "print method bytecodes of the compiled code") \ | |
| 2335 \ | |
| 2336 develop(bool, CIPrintTypeFlow, false, \ | |
| 2337 "print the results of ciTypeFlow analysis") \ | |
| 2338 \ | |
| 2339 develop(bool, CITraceTypeFlow, false, \ | |
| 2340 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
| 2341 \ | |
| 2342 develop(intx, CICloneLoopTestLimit, 100, \ | |
| 2343 "size limit for blocks heuristically cloned in ciTypeFlow") \ | |
| 2344 \ | |
| 2345 /* temp diagnostics */ \ | |
| 2346 \ | |
| 2347 diagnostic(bool, TraceRedundantCompiles, false, \ | |
| 2348 "Have compile broker print when a request already in the queue is"\ | |
| 2349 " requested again") \ | |
| 2350 \ | |
| 2351 diagnostic(bool, InitialCompileFast, false, \ | |
| 2352 "Initial compile at CompLevel_fast_compile") \ | |
| 2353 \ | |
| 2354 diagnostic(bool, InitialCompileReallyFast, false, \ | |
| 2355 "Initial compile at CompLevel_really_fast_compile (no profile)") \ | |
| 2356 \ | |
| 2357 diagnostic(bool, FullProfileOnReInterpret, true, \ | |
| 2358 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ | |
| 2359 \ | |
| 2360 /* compiler */ \ | |
| 2361 \ | |
| 2362 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
| 2363 "Number of compiler threads to run") \ | |
| 2364 \ | |
| 2365 product(intx, CompilationPolicyChoice, 0, \ | |
| 2366 "which compilation policy (0/1)") \ | |
| 2367 \ | |
| 2368 develop(bool, UseStackBanging, true, \ | |
| 2369 "use stack banging for stack overflow checks (required for " \ | |
| 2370 "proper StackOverflow handling; disable only to measure cost " \ | |
| 2371 "of stackbanging)") \ | |
| 2372 \ | |
| 2373 develop(bool, Use24BitFPMode, true, \ | |
| 2374 "Set 24-bit FPU mode on a per-compile basis ") \ | |
| 2375 \ | |
| 2376 develop(bool, Use24BitFP, true, \ | |
| 2377 "use FP instructions that produce 24-bit precise results") \ | |
| 2378 \ | |
| 2379 develop(bool, UseStrictFP, true, \ | |
| 2380 "use strict fp if modifier strictfp is set") \ | |
| 2381 \ | |
| 2382 develop(bool, GenerateSynchronizationCode, true, \ | |
| 2383 "generate locking/unlocking code for synchronized methods and " \ | |
| 2384 "monitors") \ | |
| 2385 \ | |
| 2386 develop(bool, GenerateCompilerNullChecks, true, \ | |
| 2387 "Generate explicit null checks for loads/stores/calls") \ | |
| 2388 \ | |
| 2389 develop(bool, GenerateRangeChecks, true, \ | |
| 2390 "Generate range checks for array accesses") \ | |
| 2391 \ | |
| 2392 develop_pd(bool, ImplicitNullChecks, \ | |
| 2393 "generate code for implicit null checks") \ | |
| 2394 \ | |
| 2395 product(bool, PrintSafepointStatistics, false, \ | |
| 2396 "print statistics about safepoint synchronization") \ | |
| 2397 \ | |
| 2398 product(intx, PrintSafepointStatisticsCount, 300, \ | |
| 2399 "total number of safepoint statistics collected " \ | |
| 2400 "before printing them out") \ | |
| 2401 \ | |
| 2402 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
| 2403 "print safepoint statistics only when safepoint takes" \ | |
| 2404 " more than PrintSafepointSatisticsTimeout in millis") \ | |
| 2405 \ | |
|
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2406 product(bool, TraceSafepointCleanupTime, false, \ |
|
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2407 "print the break down of clean up tasks performed during" \ |
|
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2408 " safepoint") \ |
|
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|
2409 \ |
| 0 | 2410 develop(bool, InlineAccessors, true, \ |
| 2411 "inline accessor methods (get/set)") \ | |
| 2412 \ | |
| 2413 product(bool, Inline, true, \ | |
| 2414 "enable inlining") \ | |
| 2415 \ | |
| 2416 product(bool, ClipInlining, true, \ | |
| 2417 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
| 2418 \ | |
| 2419 develop(bool, UseCHA, true, \ | |
| 2420 "enable CHA") \ | |
| 2421 \ | |
| 2422 product(bool, UseTypeProfile, true, \ | |
| 2423 "Check interpreter profile for historically monomorphic calls") \ | |
| 2424 \ | |
| 2425 product(intx, TypeProfileMajorReceiverPercent, 90, \ | |
| 2426 "% of major receiver type to all profiled receivers") \ | |
| 2427 \ | |
| 2428 notproduct(bool, TimeCompiler, false, \ | |
| 2429 "time the compiler") \ | |
| 2430 \ | |
| 2431 notproduct(bool, TimeCompiler2, false, \ | |
| 2432 "detailed time the compiler (requires +TimeCompiler)") \ | |
| 2433 \ | |
| 2434 diagnostic(bool, PrintInlining, false, \ | |
| 2435 "prints inlining optimizations") \ | |
| 2436 \ | |
| 2437 diagnostic(bool, PrintIntrinsics, false, \ | |
| 2438 "prints attempted and successful inlining of intrinsics") \ | |
| 2439 \ | |
|
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|
2440 product(bool, UseCountLeadingZerosInstruction, false, \ |
|
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|
2441 "Use count leading zeros instruction") \ |
|
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|
2442 \ |
|
643
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|
2443 product(bool, UsePopCountInstruction, false, \ |
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|
2444 "Use population count instruction") \ |
|
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|
2445 \ |
| 0 | 2446 diagnostic(ccstrlist, DisableIntrinsic, "", \ |
| 2447 "do not expand intrinsics whose (internal) names appear here") \ | |
| 2448 \ | |
| 2449 develop(bool, StressReflectiveCode, false, \ | |
| 2450 "Use inexact types at allocations, etc., to test reflection") \ | |
| 2451 \ | |
| 2452 develop(bool, EagerInitialization, false, \ | |
| 2453 "Eagerly initialize classes if possible") \ | |
| 2454 \ | |
| 2455 develop(bool, TraceMethodReplacement, false, \ | |
| 2456 "Print when methods are replaced do to recompilation") \ | |
| 2457 \ | |
| 2458 develop(bool, PrintMethodFlushing, false, \ | |
| 2459 "print the nmethods being flushed") \ | |
| 2460 \ | |
| 2461 notproduct(bool, LogMultipleMutexLocking, false, \ | |
| 2462 "log locking and unlocking of mutexes (only if multiple locks " \ | |
| 2463 "are held)") \ | |
| 2464 \ | |
| 2465 develop(bool, UseRelocIndex, false, \ | |
| 2466 "use an index to speed random access to relocations") \ | |
| 2467 \ | |
| 2468 develop(bool, StressCodeBuffers, false, \ | |
| 2469 "Exercise code buffer expansion and other rare state changes") \ | |
| 2470 \ | |
| 2471 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
| 2472 "Generate extra debugging info for non-safepoints in nmethods") \ | |
| 2473 \ | |
| 2474 diagnostic(bool, DebugInlinedCalls, true, \ | |
| 2475 "If false, restricts profiled locations to the root method only") \ | |
| 2476 \ | |
| 2477 product(bool, PrintVMOptions, trueInDebug, \ | |
| 1150 | 2478 "Print flags that appeared on the command line") \ |
| 0 | 2479 \ |
| 564 | 2480 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
| 2481 "Ignore unrecognized VM options") \ | |
| 2482 \ | |
| 1150 | 2483 product(bool, PrintCommandLineFlags, false, \ |
| 2484 "Print flags specified on command line or set by ergonomics") \ | |
| 2485 \ | |
| 2486 product(bool, PrintFlagsInitial, false, \ | |
| 2487 "Print all VM flags before argument processing and exit VM") \ | |
| 2488 \ | |
| 2489 product(bool, PrintFlagsFinal, false, \ | |
| 2490 "Print all VM flags after argument and ergonomic processing") \ | |
| 2491 \ | |
|
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|
2492 notproduct(bool, PrintFlagsWithComments, false, \ |
|
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|
2493 "Print all VM flags with default values and descriptions and exit")\ |
|
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|
2494 \ |
| 0 | 2495 diagnostic(bool, SerializeVMOutput, true, \ |
| 2496 "Use a mutex to serialize output to tty and hotspot.log") \ | |
| 2497 \ | |
| 2498 diagnostic(bool, DisplayVMOutput, true, \ | |
| 2499 "Display all VM output on the tty, independently of LogVMOutput") \ | |
| 2500 \ | |
| 2501 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
| 2502 "Save VM output to hotspot.log, or to LogFile") \ | |
| 2503 \ | |
| 2504 diagnostic(ccstr, LogFile, NULL, \ | |
| 2505 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
| 2506 \ | |
| 2507 product(ccstr, ErrorFile, NULL, \ | |
| 2508 "If an error occurs, save the error data to this file " \ | |
| 2509 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
| 2510 \ | |
| 2511 product(bool, DisplayVMOutputToStderr, false, \ | |
| 2512 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
| 2513 \ | |
| 2514 product(bool, DisplayVMOutputToStdout, false, \ | |
| 2515 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
| 2516 \ | |
| 2517 product(bool, UseHeavyMonitors, false, \ | |
| 2518 "use heavyweight instead of lightweight Java monitors") \ | |
| 2519 \ | |
| 2520 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ | |
| 2521 "print histogram of the symbol table") \ | |
| 2522 \ | |
| 2523 notproduct(bool, ExitVMOnVerifyError, false, \ | |
| 2524 "standard exit from VM if bytecode verify error " \ | |
| 2525 "(only in debug mode)") \ | |
| 2526 \ | |
| 2527 notproduct(ccstr, AbortVMOnException, NULL, \ | |
| 2528 "Call fatal if this exception is thrown. Example: " \ | |
| 2529 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
| 2530 \ | |
|
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2531 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
|
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2532 "Call fatal if the exception pointed by AbortVMOnException " \ |
|
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|
2533 "has this message.") \ |
|
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|
2534 \ |
| 0 | 2535 develop(bool, DebugVtables, false, \ |
| 2536 "add debugging code to vtable dispatch") \ | |
| 2537 \ | |
| 2538 develop(bool, PrintVtables, false, \ | |
| 2539 "print vtables when printing klass") \ | |
| 2540 \ | |
| 2541 notproduct(bool, PrintVtableStats, false, \ | |
| 2542 "print vtables stats at end of run") \ | |
| 2543 \ | |
| 2544 develop(bool, TraceCreateZombies, false, \ | |
| 2545 "trace creation of zombie nmethods") \ | |
| 2546 \ | |
| 2547 notproduct(bool, IgnoreLockingAssertions, false, \ | |
| 2548 "disable locking assertions (for speed)") \ | |
| 2549 \ | |
| 2550 notproduct(bool, VerifyLoopOptimizations, false, \ | |
| 2551 "verify major loop optimizations") \ | |
| 2552 \ | |
| 2553 product(bool, RangeCheckElimination, true, \ | |
| 2554 "Split loop iterations to eliminate range checks") \ | |
| 2555 \ | |
| 2556 develop_pd(bool, UncommonNullCast, \ | |
| 2557 "track occurrences of null in casts; adjust compiler tactics") \ | |
| 2558 \ | |
| 2559 develop(bool, TypeProfileCasts, true, \ | |
| 2560 "treat casts like calls for purposes of type profiling") \ | |
| 2561 \ | |
| 2562 develop(bool, MonomorphicArrayCheck, true, \ | |
| 2563 "Uncommon-trap array store checks that require full type check") \ | |
| 2564 \ | |
|
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|
2565 diagnostic(bool, ProfileDynamicTypes, true, \ |
|
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2566 "do extra type profiling and use it more aggressively") \ |
|
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|
2567 \ |
| 0 | 2568 develop(bool, DelayCompilationDuringStartup, true, \ |
| 2569 "Delay invoking the compiler until main application class is " \ | |
| 2570 "loaded") \ | |
| 2571 \ | |
| 2572 develop(bool, CompileTheWorld, false, \ | |
| 2573 "Compile all methods in all classes in bootstrap class path " \ | |
| 2574 "(stress test)") \ | |
| 2575 \ | |
| 2576 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
| 2577 "Preload all classes used by a class before start loading") \ | |
| 2578 \ | |
| 2579 notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \ | |
| 2580 "Compile all methods although class initializer failed") \ | |
| 2581 \ | |
|
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|
2582 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
|
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|
2583 "Force a safepoint every n compiles so sweeper can keep up") \ |
|
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|
2584 \ |
| 0 | 2585 develop(bool, TraceIterativeGVN, false, \ |
| 2586 "Print progress during Iterative Global Value Numbering") \ | |
| 2587 \ | |
| 2588 develop(bool, FillDelaySlots, true, \ | |
| 2589 "Fill delay slots (on SPARC only)") \ | |
| 2590 \ | |
| 2591 develop(bool, VerifyIterativeGVN, false, \ | |
| 2592 "Verify Def-Use modifications during sparse Iterative Global " \ | |
| 2593 "Value Numbering") \ | |
| 2594 \ | |
| 2595 notproduct(bool, TracePhaseCCP, false, \ | |
| 2596 "Print progress during Conditional Constant Propagation") \ | |
| 2597 \ | |
| 2598 develop(bool, TimeLivenessAnalysis, false, \ | |
| 2599 "Time computation of bytecode liveness analysis") \ | |
| 2600 \ | |
| 2601 develop(bool, TraceLivenessGen, false, \ | |
| 2602 "Trace the generation of liveness analysis information") \ | |
| 2603 \ | |
| 2604 notproduct(bool, TraceLivenessQuery, false, \ | |
| 2605 "Trace queries of liveness analysis information") \ | |
| 2606 \ | |
| 2607 notproduct(bool, CollectIndexSetStatistics, false, \ | |
| 2608 "Collect information about IndexSets") \ | |
| 2609 \ | |
| 2610 develop(bool, PrintDominators, false, \ | |
| 2611 "Print out dominator trees for GVN") \ | |
| 2612 \ | |
| 2613 develop(bool, UseLoopSafepoints, true, \ | |
| 2614 "Generate Safepoint nodes in every loop") \ | |
| 2615 \ | |
| 2616 notproduct(bool, TraceCISCSpill, false, \ | |
| 2617 "Trace allocators use of cisc spillable instructions") \ | |
| 2618 \ | |
| 2619 notproduct(bool, TraceSpilling, false, \ | |
| 2620 "Trace spilling") \ | |
| 2621 \ | |
| 2622 product(bool, SplitIfBlocks, true, \ | |
| 2623 "Clone compares and control flow through merge points to fold " \ | |
| 2624 "some branches") \ | |
| 2625 \ | |
| 2626 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
| 2627 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
| 2628 "Inline allocations larger than this in doublewords must go slow")\ | |
| 2629 \ | |
| 2630 product(bool, AggressiveOpts, false, \ | |
| 2631 "Enable aggressive optimizations - see arguments.cpp") \ | |
| 2632 \ | |
|
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|
2633 product(bool, UseStringCache, false, \ |
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2634 "Enable String cache capabilities on String.java") \ |
|
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|
2635 \ |
| 0 | 2636 /* statistics */ \ |
| 2637 develop(bool, CountCompiledCalls, false, \ | |
| 2638 "counts method invocations") \ | |
| 2639 \ | |
| 2640 notproduct(bool, CountRuntimeCalls, false, \ | |
| 2641 "counts VM runtime calls") \ | |
| 2642 \ | |
| 2643 develop(bool, CountJNICalls, false, \ | |
| 2644 "counts jni method invocations") \ | |
| 2645 \ | |
| 2646 notproduct(bool, CountJVMCalls, false, \ | |
| 2647 "counts jvm method invocations") \ | |
| 2648 \ | |
| 2649 notproduct(bool, CountRemovableExceptions, false, \ | |
| 2650 "count exceptions that could be replaced by branches due to " \ | |
| 2651 "inlining") \ | |
| 2652 \ | |
| 2653 notproduct(bool, ICMissHistogram, false, \ | |
| 2654 "produce histogram of IC misses") \ | |
| 2655 \ | |
| 2656 notproduct(bool, PrintClassStatistics, false, \ | |
| 2657 "prints class statistics at end of run") \ | |
| 2658 \ | |
| 2659 notproduct(bool, PrintMethodStatistics, false, \ | |
| 2660 "prints method statistics at end of run") \ | |
| 2661 \ | |
| 2662 /* interpreter */ \ | |
| 2663 develop(bool, ClearInterpreterLocals, false, \ | |
| 2664 "Always clear local variables of interpreter activations upon " \ | |
| 2665 "entry") \ | |
| 2666 \ | |
| 2667 product_pd(bool, RewriteBytecodes, \ | |
| 2668 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
| 2669 \ | |
| 2670 product_pd(bool, RewriteFrequentPairs, \ | |
| 2671 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
| 2672 \ | |
|
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|
2673 diagnostic(bool, PrintInterpreter, false, \ |
| 0 | 2674 "Prints the generated interpreter code") \ |
| 2675 \ | |
| 2676 product(bool, UseInterpreter, true, \ | |
| 2677 "Use interpreter for non-compiled methods") \ | |
| 2678 \ | |
| 2679 develop(bool, UseFastSignatureHandlers, true, \ | |
| 2680 "Use fast signature handlers for native calls") \ | |
| 2681 \ | |
| 2682 develop(bool, UseV8InstrsOnly, false, \ | |
| 2683 "Use SPARC-V8 Compliant instruction subset") \ | |
| 2684 \ | |
| 2685 product(bool, UseNiagaraInstrs, false, \ | |
| 2686 "Use Niagara-efficient instruction subset") \ | |
| 2687 \ | |
| 2688 develop(bool, UseCASForSwap, false, \ | |
| 2689 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ | |
| 2690 \ | |
| 2691 product(bool, UseLoopCounter, true, \ | |
| 2692 "Increment invocation counter on backward branch") \ | |
| 2693 \ | |
| 2694 product(bool, UseFastEmptyMethods, true, \ | |
| 2695 "Use fast method entry code for empty methods") \ | |
| 2696 \ | |
| 2697 product(bool, UseFastAccessorMethods, true, \ | |
| 2698 "Use fast method entry code for accessor methods") \ | |
| 2699 \ | |
| 2700 product_pd(bool, UseOnStackReplacement, \ | |
| 2701 "Use on stack replacement, calls runtime if invoc. counter " \ | |
| 2702 "overflows in loop") \ | |
| 2703 \ | |
| 2704 notproduct(bool, TraceOnStackReplacement, false, \ | |
| 2705 "Trace on stack replacement") \ | |
| 2706 \ | |
| 2707 develop(bool, PoisonOSREntry, true, \ | |
| 2708 "Detect abnormal calls to OSR code") \ | |
| 2709 \ | |
| 2710 product_pd(bool, PreferInterpreterNativeStubs, \ | |
| 2711 "Use always interpreter stubs for native methods invoked via " \ | |
| 2712 "interpreter") \ | |
| 2713 \ | |
| 2714 develop(bool, CountBytecodes, false, \ | |
| 2715 "Count number of bytecodes executed") \ | |
| 2716 \ | |
| 2717 develop(bool, PrintBytecodeHistogram, false, \ | |
| 2718 "Print histogram of the executed bytecodes") \ | |
| 2719 \ | |
| 2720 develop(bool, PrintBytecodePairHistogram, false, \ | |
| 2721 "Print histogram of the executed bytecode pairs") \ | |
| 2722 \ | |
|
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|
2723 diagnostic(bool, PrintSignatureHandlers, false, \ |
| 0 | 2724 "Print code generated for native method signature handlers") \ |
| 2725 \ | |
| 2726 develop(bool, VerifyOops, false, \ | |
| 2727 "Do plausibility checks for oops") \ | |
| 2728 \ | |
| 2729 develop(bool, CheckUnhandledOops, false, \ | |
| 2730 "Check for unhandled oops in VM code") \ | |
| 2731 \ | |
| 2732 develop(bool, VerifyJNIFields, trueInDebug, \ | |
| 2733 "Verify jfieldIDs for instance fields") \ | |
| 2734 \ | |
| 2735 notproduct(bool, VerifyJNIEnvThread, false, \ | |
| 2736 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
| 2737 "from JNI") \ | |
| 2738 \ | |
| 2739 develop(bool, VerifyFPU, false, \ | |
| 2740 "Verify FPU state (check for NaN's, etc.)") \ | |
| 2741 \ | |
| 2742 develop(bool, VerifyThread, false, \ | |
| 2743 "Watch the thread register for corruption (SPARC only)") \ | |
| 2744 \ | |
| 2745 develop(bool, VerifyActivationFrameSize, false, \ | |
| 2746 "Verify that activation frame didn't become smaller than its " \ | |
| 2747 "minimal size") \ | |
| 2748 \ | |
| 2749 develop(bool, TraceFrequencyInlining, false, \ | |
| 2750 "Trace frequency based inlining") \ | |
| 2751 \ | |
| 2752 notproduct(bool, TraceTypeProfile, false, \ | |
| 2753 "Trace type profile") \ | |
| 2754 \ | |
| 2755 develop_pd(bool, InlineIntrinsics, \ | |
| 2756 "Inline intrinsics that can be statically resolved") \ | |
| 2757 \ | |
| 2758 product_pd(bool, ProfileInterpreter, \ | |
| 2759 "Profile at the bytecode level during interpretation") \ | |
| 2760 \ | |
| 2761 develop_pd(bool, ProfileTraps, \ | |
| 2762 "Profile deoptimization traps at the bytecode level") \ | |
| 2763 \ | |
| 2764 product(intx, ProfileMaturityPercentage, 20, \ | |
| 2765 "number of method invocations/branches (expressed as % of " \ | |
| 2766 "CompileThreshold) before using the method's profile") \ | |
| 2767 \ | |
| 2768 develop(bool, PrintMethodData, false, \ | |
| 2769 "Print the results of +ProfileInterpreter at end of run") \ | |
| 2770 \ | |
| 2771 develop(bool, VerifyDataPointer, trueInDebug, \ | |
| 2772 "Verify the method data pointer during interpreter profiling") \ | |
| 2773 \ | |
| 2774 develop(bool, VerifyCompiledCode, false, \ | |
| 2775 "Include miscellaneous runtime verifications in nmethod code; " \ | |
| 1064 | 2776 "default off because it disturbs nmethod size heuristics") \ |
| 0 | 2777 \ |
|
1119
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|
2778 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
|
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|
2779 "Manually make GC thread crash then dump java stack trace; " \ |
|
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|
2780 "Test only") \ |
| 0 | 2781 \ |
| 2782 /* compilation */ \ | |
| 2783 product(bool, UseCompiler, true, \ | |
| 2784 "use compilation") \ | |
| 2785 \ | |
| 2786 develop(bool, TraceCompilationPolicy, false, \ | |
| 2787 "Trace compilation policy") \ | |
| 2788 \ | |
| 2789 develop(bool, TimeCompilationPolicy, false, \ | |
| 2790 "Time the compilation policy") \ | |
| 2791 \ | |
| 2792 product(bool, UseCounterDecay, true, \ | |
| 2793 "adjust recompilation counters") \ | |
| 2794 \ | |
| 2795 develop(intx, CounterHalfLifeTime, 30, \ | |
| 2796 "half-life time of invocation counters (in secs)") \ | |
| 2797 \ | |
| 2798 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
| 2799 "Min. ms. between invocation of CounterDecay") \ | |
| 2800 \ | |
| 2801 product(bool, AlwaysCompileLoopMethods, false, \ | |
| 2802 "when using recompilation, never interpret methods " \ | |
| 2803 "containing loops") \ | |
| 2804 \ | |
| 2805 product(bool, DontCompileHugeMethods, true, \ | |
| 2806 "don't compile methods > HugeMethodLimit") \ | |
| 2807 \ | |
| 2808 /* Bytecode escape analysis estimation. */ \ | |
| 2809 product(bool, EstimateArgEscape, true, \ | |
| 2810 "Analyze bytecodes to estimate escape state of arguments") \ | |
| 2811 \ | |
| 2812 product(intx, BCEATraceLevel, 0, \ | |
| 2813 "How much tracing to do of bytecode escape analysis estimates") \ | |
| 2814 \ | |
| 2815 product(intx, MaxBCEAEstimateLevel, 5, \ | |
| 2816 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
| 2817 \ | |
| 2818 product(intx, MaxBCEAEstimateSize, 150, \ | |
| 2819 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
| 2820 \ | |
| 2821 product(intx, AllocatePrefetchStyle, 1, \ | |
| 2822 "0 = no prefetch, " \ | |
| 2823 "1 = prefetch instructions for each allocation, " \ | |
|
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|
2824 "2 = use TLAB watermark to gate allocation prefetch, " \ |
|
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|
2825 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
| 0 | 2826 \ |
| 2827 product(intx, AllocatePrefetchDistance, -1, \ | |
| 2828 "Distance to prefetch ahead of allocation pointer") \ | |
| 2829 \ | |
| 2830 product(intx, AllocatePrefetchLines, 1, \ | |
| 2831 "Number of lines to prefetch ahead of allocation pointer") \ | |
| 2832 \ | |
| 2833 product(intx, AllocatePrefetchStepSize, 16, \ | |
| 2834 "Step size in bytes of sequential prefetch instructions") \ | |
| 2835 \ | |
| 2836 product(intx, AllocatePrefetchInstr, 0, \ | |
| 2837 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
| 2838 \ | |
| 2839 product(intx, ReadPrefetchInstr, 0, \ | |
| 2840 "Prefetch instruction to prefetch ahead") \ | |
| 2841 \ | |
| 2842 /* deoptimization */ \ | |
| 2843 develop(bool, TraceDeoptimization, false, \ | |
| 2844 "Trace deoptimization") \ | |
| 2845 \ | |
| 2846 develop(bool, DebugDeoptimization, false, \ | |
| 2847 "Tracing various information while debugging deoptimization") \ | |
| 2848 \ | |
| 2849 product(intx, SelfDestructTimer, 0, \ | |
| 2850 "Will cause VM to terminate after a given time (in minutes) " \ | |
| 2851 "(0 means off)") \ | |
| 2852 \ | |
| 2853 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
| 2854 "Max. no. of lines in the stack trace for Java exceptions " \ | |
| 2855 "(0 means all)") \ | |
| 2856 \ | |
| 2857 develop(intx, GuaranteedSafepointInterval, 1000, \ | |
| 2858 "Guarantee a safepoint (at least) every so many milliseconds " \ | |
| 2859 "(0 means none)") \ | |
| 2860 \ | |
| 2861 product(intx, SafepointTimeoutDelay, 10000, \ | |
| 2862 "Delay in milliseconds for option SafepointTimeout") \ | |
| 2863 \ | |
| 2864 product(intx, NmethodSweepFraction, 4, \ | |
| 2865 "Number of invocations of sweeper to cover all nmethods") \ | |
| 2866 \ | |
|
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|
2867 product(intx, NmethodSweepCheckInterval, 5, \ |
|
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|
2868 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
|
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|
2869 \ |
| 0 | 2870 notproduct(intx, MemProfilingInterval, 500, \ |
| 2871 "Time between each invocation of the MemProfiler") \ | |
| 2872 \ | |
| 2873 develop(intx, MallocCatchPtr, -1, \ | |
| 2874 "Hit breakpoint when mallocing/freeing this pointer") \ | |
| 2875 \ | |
| 2876 notproduct(intx, AssertRepeat, 1, \ | |
| 2877 "number of times to evaluate expression in assert " \ | |
| 2878 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
| 2879 \ | |
| 2880 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
| 2881 "List of assertions (file:line) to muzzle") \ | |
| 2882 \ | |
| 2883 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
| 2884 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
| 2885 "is used") \ | |
| 2886 \ | |
| 2887 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
| 2888 "Threshold for total handle allocation when " \ | |
| 2889 "+TraceHandleAllocation is used") \ | |
| 2890 \ | |
| 2891 develop(intx, StackPrintLimit, 100, \ | |
| 2892 "number of stack frames to print in VM-level stack dump") \ | |
| 2893 \ | |
| 2894 notproduct(intx, MaxElementPrintSize, 256, \ | |
| 2895 "maximum number of elements to print") \ | |
| 2896 \ | |
| 2897 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
| 2898 "maximum number of subklasses to print when printing klass") \ | |
| 2899 \ | |
|
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|
2900 product(intx, MaxInlineLevel, 9, \ |
| 0 | 2901 "maximum number of nested calls that are inlined") \ |
| 2902 \ | |
|
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|
2903 product(intx, MaxRecursiveInlineLevel, 1, \ |
| 0 | 2904 "maximum number of nested recursive calls that are inlined") \ |
| 2905 \ | |
| 675 | 2906 product_pd(intx, InlineSmallCode, \ |
| 0 | 2907 "Only inline already compiled methods if their code size is " \ |
| 2908 "less than this") \ | |
| 2909 \ | |
| 2910 product(intx, MaxInlineSize, 35, \ | |
| 2911 "maximum bytecode size of a method to be inlined") \ | |
| 2912 \ | |
| 2913 product_pd(intx, FreqInlineSize, \ | |
| 2914 "maximum bytecode size of a frequent method to be inlined") \ | |
| 2915 \ | |
|
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|
2916 product(intx, MaxTrivialSize, 6, \ |
| 0 | 2917 "maximum bytecode size of a trivial method to be inlined") \ |
| 2918 \ | |
|
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|
2919 product(intx, MinInliningThreshold, 250, \ |
| 0 | 2920 "min. invocation count a method needs to have to be inlined") \ |
| 2921 \ | |
| 2922 develop(intx, AlignEntryCode, 4, \ | |
| 2923 "aligns entry code to specified value (in bytes)") \ | |
| 2924 \ | |
| 2925 develop(intx, MethodHistogramCutoff, 100, \ | |
| 2926 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
| 2927 \ | |
| 2928 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
| 2929 "# of interpreted methods to show in profile") \ | |
| 2930 \ | |
| 2931 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
| 2932 "# of compiled methods to show in profile") \ | |
| 2933 \ | |
| 2934 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
| 2935 "# of stub methods to show in profile") \ | |
| 2936 \ | |
| 2937 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
| 2938 "# of runtime stub nodes to show in profile") \ | |
| 2939 \ | |
| 2940 product(intx, ProfileIntervalsTicks, 100, \ | |
| 2941 "# of ticks between printing of interval profile " \ | |
| 2942 "(+ProfileIntervals)") \ | |
| 2943 \ | |
| 2944 notproduct(intx, ScavengeALotInterval, 1, \ | |
| 2945 "Interval between which scavenge will occur with +ScavengeALot") \ | |
| 2946 \ | |
| 2947 notproduct(intx, FullGCALotInterval, 1, \ | |
| 2948 "Interval between which full gc will occur with +FullGCALot") \ | |
| 2949 \ | |
| 2950 notproduct(intx, FullGCALotStart, 0, \ | |
| 2951 "For which invocation to start FullGCAlot") \ | |
| 2952 \ | |
| 2953 notproduct(intx, FullGCALotDummies, 32*K, \ | |
| 2954 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
| 2955 "to move") \ | |
| 2956 \ | |
| 2957 develop(intx, DontYieldALotInterval, 10, \ | |
| 2958 "Interval between which yields will be dropped (milliseconds)") \ | |
| 2959 \ | |
| 2960 develop(intx, MinSleepInterval, 1, \ | |
| 2961 "Minimum sleep() interval (milliseconds) when " \ | |
| 2962 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
| 2963 \ | |
| 2964 product(intx, EventLogLength, 2000, \ | |
| 2965 "maximum nof events in event log") \ | |
| 2966 \ | |
| 2967 develop(intx, ProfilerPCTickThreshold, 15, \ | |
| 2968 "Number of ticks in a PC buckets to be a hotspot") \ | |
| 2969 \ | |
| 2970 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
| 2971 "Number of exits until DeoptimizeALot kicks in") \ | |
| 2972 \ | |
| 2973 notproduct(intx, ZombieALotInterval, 5, \ | |
| 2974 "Number of exits until ZombieALot kicks in") \ | |
| 2975 \ | |
| 2976 develop(bool, StressNonEntrant, false, \ | |
| 2977 "Mark nmethods non-entrant at registration") \ | |
| 2978 \ | |
| 2979 diagnostic(intx, MallocVerifyInterval, 0, \ | |
| 2980 "if non-zero, verify C heap after every N calls to " \ | |
| 2981 "malloc/realloc/free") \ | |
| 2982 \ | |
| 2983 diagnostic(intx, MallocVerifyStart, 0, \ | |
| 2984 "if non-zero, start verifying C heap after Nth call to " \ | |
| 2985 "malloc/realloc/free") \ | |
| 2986 \ | |
| 1783 | 2987 product(intx, TypeProfileWidth, 2, \ |
| 0 | 2988 "number of receiver types to record in call/cast profile") \ |
| 2989 \ | |
| 2990 develop(intx, BciProfileWidth, 2, \ | |
| 2991 "number of return bci's to record in ret profile") \ | |
| 2992 \ | |
| 2993 product(intx, PerMethodRecompilationCutoff, 400, \ | |
| 2994 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
| 2995 \ | |
|
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|
2996 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
| 0 | 2997 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
| 2998 \ | |
| 2999 product(intx, PerMethodTrapLimit, 100, \ | |
| 3000 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
| 3001 \ | |
| 3002 product(intx, PerBytecodeTrapLimit, 4, \ | |
| 3003 "Limit on traps (of one kind) at a particular BCI") \ | |
| 3004 \ | |
| 3005 develop(intx, FreqCountInvocations, 1, \ | |
| 3006 "Scaling factor for branch frequencies (deprecated)") \ | |
| 3007 \ | |
| 3008 develop(intx, InlineFrequencyRatio, 20, \ | |
| 3009 "Ratio of call site execution to caller method invocation") \ | |
| 3010 \ | |
| 3011 develop_pd(intx, InlineFrequencyCount, \ | |
| 3012 "Count of call site execution necessary to trigger frequent " \ | |
| 3013 "inlining") \ | |
| 3014 \ | |
| 3015 develop(intx, InlineThrowCount, 50, \ | |
| 3016 "Force inlining of interpreted methods that throw this often") \ | |
| 3017 \ | |
| 3018 develop(intx, InlineThrowMaxSize, 200, \ | |
| 3019 "Force inlining of throwing methods smaller than this") \ | |
| 3020 \ | |
| 3021 product(intx, AliasLevel, 3, \ | |
| 3022 "0 for no aliasing, 1 for oop/field/static/array split, " \ | |
| 3023 "2 for class split, 3 for unique instances") \ | |
| 3024 \ | |
| 3025 develop(bool, VerifyAliases, false, \ | |
| 3026 "perform extra checks on the results of alias analysis") \ | |
| 3027 \ | |
| 3028 develop(intx, ProfilerNodeSize, 1024, \ | |
| 3029 "Size in K to allocate for the Profile Nodes of each thread") \ | |
| 3030 \ | |
| 3031 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ | |
| 3032 "Number of times to spin wait on a v8 atomic operation lock") \ | |
| 3033 \ | |
| 3034 product(intx, ReadSpinIterations, 100, \ | |
| 3035 "Number of read attempts before a yield (spin inner loop)") \ | |
| 3036 \ | |
| 3037 product_pd(intx, PreInflateSpin, \ | |
| 3038 "Number of times to spin wait before inflation") \ | |
| 3039 \ | |
| 3040 product(intx, PreBlockSpin, 10, \ | |
| 3041 "Number of times to spin in an inflated lock before going to " \ | |
| 3042 "an OS lock") \ | |
| 3043 \ | |
| 3044 /* gc parameters */ \ | |
| 1064 | 3045 product(uintx, InitialHeapSize, 0, \ |
| 3046 "Initial heap size (in bytes); zero means OldSize + NewSize") \ | |
| 3047 \ | |
| 3048 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
| 3049 "Maximum heap size (in bytes)") \ | |
| 3050 \ | |
| 3051 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
| 3052 "Initial tenured generation size (in bytes)") \ | |
| 3053 \ | |
|
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|
3054 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
| 1064 | 3055 "Initial new generation size (in bytes)") \ |
| 0 | 3056 \ |
| 3057 product(uintx, MaxNewSize, max_uintx, \ | |
| 1064 | 3058 "Maximum new generation size (in bytes), max_uintx means set " \ |
| 3059 "ergonomically") \ | |
| 0 | 3060 \ |
| 3061 product(uintx, PretenureSizeThreshold, 0, \ | |
| 1064 | 3062 "Maximum size in bytes of objects allocated in DefNew " \ |
| 3063 "generation; zero means no maximum") \ | |
| 3064 \ | |
| 3065 product(uintx, TLABSize, 0, \ | |
| 3066 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
| 0 | 3067 \ |
| 3068 product(uintx, MinTLABSize, 2*K, \ | |
| 3069 "Minimum allowed TLAB size (in bytes)") \ | |
| 3070 \ | |
| 3071 product(uintx, TLABAllocationWeight, 35, \ | |
| 3072 "Allocation averaging weight") \ | |
| 3073 \ | |
| 3074 product(uintx, TLABWasteTargetPercent, 1, \ | |
| 3075 "Percentage of Eden that can be wasted") \ | |
| 3076 \ | |
| 3077 product(uintx, TLABRefillWasteFraction, 64, \ | |
| 3078 "Max TLAB waste at a refill (internal fragmentation)") \ | |
| 3079 \ | |
| 3080 product(uintx, TLABWasteIncrement, 4, \ | |
| 3081 "Increment allowed waste at slow allocation") \ | |
| 3082 \ | |
| 1064 | 3083 product(intx, SurvivorRatio, 8, \ |
| 0 | 3084 "Ratio of eden/survivor space size") \ |
| 3085 \ | |
| 1064 | 3086 product(intx, NewRatio, 2, \ |
| 0 | 3087 "Ratio of new/old generation sizes") \ |
| 3088 \ | |
| 3089 product_pd(uintx, NewSizeThreadIncrease, \ | |
| 3090 "Additional size added to desired new generation size per " \ | |
| 3091 "non-daemon thread (in bytes)") \ | |
| 3092 \ | |
| 3093 product_pd(uintx, PermSize, \ | |
| 1064 | 3094 "Initial size of permanent generation (in bytes)") \ |
| 0 | 3095 \ |
| 3096 product_pd(uintx, MaxPermSize, \ | |
| 3097 "Maximum size of permanent generation (in bytes)") \ | |
| 3098 \ | |
| 3099 product(uintx, MinHeapFreeRatio, 40, \ | |
| 3100 "Min percentage of heap free after GC to avoid expansion") \ | |
| 3101 \ | |
| 3102 product(uintx, MaxHeapFreeRatio, 70, \ | |
| 3103 "Max percentage of heap free after GC to avoid shrinking") \ | |
| 3104 \ | |
| 3105 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
| 3106 "Number of milliseconds per MB of free space in the heap") \ | |
| 3107 \ | |
| 3108 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
| 3109 "Min change in heap space due to GC (in bytes)") \ | |
| 3110 \ | |
| 3111 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
| 3112 "Min expansion of permanent heap (in bytes)") \ | |
| 3113 \ | |
| 3114 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
| 3115 "Max expansion of permanent heap without full GC (in bytes)") \ | |
| 3116 \ | |
| 3117 product(intx, QueuedAllocationWarningCount, 0, \ | |
| 3118 "Number of times an allocation that queues behind a GC " \ | |
| 3119 "will retry before printing a warning") \ | |
| 3120 \ | |
| 3121 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
| 3122 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
| 3123 \ | |
| 3124 diagnostic(intx, VerifyGCLevel, 0, \ | |
| 3125 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
| 3126 \ | |
| 3127 develop(uintx, ExitAfterGCNum, 0, \ | |
| 3128 "If non-zero, exit after this GC.") \ | |
| 3129 \ | |
| 3130 product(intx, MaxTenuringThreshold, 15, \ | |
| 3131 "Maximum value for tenuring threshold") \ | |
| 3132 \ | |
| 3133 product(intx, InitialTenuringThreshold, 7, \ | |
| 3134 "Initial value for tenuring threshold") \ | |
| 3135 \ | |
| 3136 product(intx, TargetSurvivorRatio, 50, \ | |
| 3137 "Desired percentage of survivor space used after scavenge") \ | |
| 3138 \ | |
| 438 | 3139 product(uintx, MarkSweepDeadRatio, 5, \ |
| 0 | 3140 "Percentage (0-100) of the old gen allowed as dead wood." \ |
| 3141 "Serial mark sweep treats this as both the min and max value." \ | |
| 3142 "CMS uses this value only if it falls back to mark sweep." \ | |
| 3143 "Par compact uses a variable scale based on the density of the" \ | |
| 3144 "generation and treats this as the max value when the heap is" \ | |
| 3145 "either completely full or completely empty. Par compact also" \ | |
| 3146 "has a smaller default value; see arguments.cpp.") \ | |
| 3147 \ | |
| 438 | 3148 product(uintx, PermMarkSweepDeadRatio, 20, \ |
| 0 | 3149 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
| 3150 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
| 3151 \ | |
| 3152 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
| 3153 "How often should we fully compact the heap (ignoring the dead " \ | |
| 3154 "space parameters)") \ | |
| 3155 \ | |
| 3156 product(intx, PrintCMSStatistics, 0, \ | |
| 3157 "Statistics for CMS") \ | |
| 3158 \ | |
| 3159 product(bool, PrintCMSInitiationStatistics, false, \ | |
| 3160 "Statistics for initiating a CMS collection") \ | |
| 3161 \ | |
| 3162 product(intx, PrintFLSStatistics, 0, \ | |
| 3163 "Statistics for CMS' FreeListSpace") \ | |
| 3164 \ | |
| 3165 product(intx, PrintFLSCensus, 0, \ | |
| 3166 "Census for CMS' FreeListSpace") \ | |
| 3167 \ | |
| 3168 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
| 3169 "Delay in ms between expansion and allocation") \ | |
| 3170 \ | |
| 3171 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
| 3172 "(Unstable) Number of times to iterate in safepoint loop " \ | |
| 3173 " before blocking VM threads ") \ | |
| 3174 \ | |
| 3175 product(intx, DeferPollingPageLoopCount, -1, \ | |
| 3176 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
| 3177 "before changing safepoint polling page to RO ") \ | |
| 3178 \ | |
| 3179 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
| 3180 \ | |
| 3181 product(bool, PSChunkLargeArrays, true, \ | |
| 3182 "true: process large arrays in chunks") \ | |
| 3183 \ | |
| 3184 product(uintx, GCDrainStackTargetSize, 64, \ | |
| 3185 "how many entries we'll try to leave on the stack during " \ | |
| 3186 "parallel GC") \ | |
| 3187 \ | |
| 3188 /* stack parameters */ \ | |
| 3189 product_pd(intx, StackYellowPages, \ | |
| 3190 "Number of yellow zone (recoverable overflows) pages") \ | |
| 3191 \ | |
| 3192 product_pd(intx, StackRedPages, \ | |
| 3193 "Number of red zone (unrecoverable overflows) pages") \ | |
| 3194 \ | |
| 3195 product_pd(intx, StackShadowPages, \ | |
| 3196 "Number of shadow zone (for overflow checking) pages" \ | |
| 3197 " this should exceed the depth of the VM and native call stack") \ | |
| 3198 \ | |
| 3199 product_pd(intx, ThreadStackSize, \ | |
| 3200 "Thread Stack Size (in Kbytes)") \ | |
| 3201 \ | |
| 3202 product_pd(intx, VMThreadStackSize, \ | |
| 3203 "Non-Java Thread Stack Size (in Kbytes)") \ | |
| 3204 \ | |
| 3205 product_pd(intx, CompilerThreadStackSize, \ | |
| 3206 "Compiler Thread Stack Size (in Kbytes)") \ | |
| 3207 \ | |
| 3208 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
| 3209 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
| 3210 \ | |
| 3211 product(uintx, ThreadSafetyMargin, 50*M, \ | |
| 3212 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
| 3213 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
| 3214 "disable this feature") \ | |
| 3215 \ | |
| 3216 /* code cache parameters */ \ | |
| 3217 develop(uintx, CodeCacheSegmentSize, 64, \ | |
| 3218 "Code cache segment size (in bytes) - smallest unit of " \ | |
| 3219 "allocation") \ | |
| 3220 \ | |
| 3221 develop_pd(intx, CodeEntryAlignment, \ | |
| 3222 "Code entry alignment for generated code (in bytes)") \ | |
| 3223 \ | |
| 1365 | 3224 product_pd(intx, OptoLoopAlignment, \ |
| 3225 "Align inner loops to zero relative to this modulus") \ | |
| 3226 \ | |
| 0 | 3227 product_pd(uintx, InitialCodeCacheSize, \ |
| 3228 "Initial code cache size (in bytes)") \ | |
| 3229 \ | |
| 3230 product_pd(uintx, ReservedCodeCacheSize, \ | |
| 3231 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
| 3232 \ | |
| 3233 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
| 3234 "When less than X space left, we stop compiling.") \ | |
| 3235 \ | |
| 3236 product_pd(uintx, CodeCacheExpansionSize, \ | |
| 3237 "Code cache expansion size (in bytes)") \ | |
| 3238 \ | |
| 3239 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
| 3240 "Minimum number of segments in a code cache block.") \ | |
| 3241 \ | |
| 3242 notproduct(bool, ExitOnFullCodeCache, false, \ | |
| 3243 "Exit the VM if we fill the code cache.") \ | |
| 3244 \ | |
| 1202 | 3245 product(bool, UseCodeCacheFlushing, false, \ |
| 3246 "Attempt to clean the code cache before shutting off compiler") \ | |
| 3247 \ | |
| 3248 product(intx, MinCodeCacheFlushingInterval, 30, \ | |
| 3249 "Min number of seconds between code cache cleaning sessions") \ | |
| 3250 \ | |
| 3251 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ | |
| 3252 "When less than X space left, start code cache cleaning") \ | |
| 3253 \ | |
| 0 | 3254 /* interpreter debugging */ \ |
| 3255 develop(intx, BinarySwitchThreshold, 5, \ | |
| 3256 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
| 3257 "switch") \ | |
| 3258 \ | |
| 3259 develop(intx, StopInterpreterAt, 0, \ | |
| 3260 "Stops interpreter execution at specified bytecode number") \ | |
| 3261 \ | |
| 3262 develop(intx, TraceBytecodesAt, 0, \ | |
| 3263 "Traces bytecodes starting with specified bytecode number") \ | |
| 3264 \ | |
| 3265 /* compiler interface */ \ | |
| 3266 develop(intx, CIStart, 0, \ | |
| 3267 "the id of the first compilation to permit") \ | |
| 3268 \ | |
| 3269 develop(intx, CIStop, -1, \ | |
| 3270 "the id of the last compilation to permit") \ | |
| 3271 \ | |
| 3272 develop(intx, CIStartOSR, 0, \ | |
| 3273 "the id of the first osr compilation to permit " \ | |
| 3274 "(CICountOSR must be on)") \ | |
| 3275 \ | |
| 3276 develop(intx, CIStopOSR, -1, \ | |
| 3277 "the id of the last osr compilation to permit " \ | |
| 3278 "(CICountOSR must be on)") \ | |
| 3279 \ | |
| 3280 develop(intx, CIBreakAtOSR, -1, \ | |
| 3281 "id of osr compilation to break at") \ | |
| 3282 \ | |
| 3283 develop(intx, CIBreakAt, -1, \ | |
| 3284 "id of compilation to break at") \ | |
| 3285 \ | |
| 3286 product(ccstrlist, CompileOnly, "", \ | |
| 3287 "List of methods (pkg/class.name) to restrict compilation to") \ | |
| 3288 \ | |
| 3289 product(ccstr, CompileCommandFile, NULL, \ | |
| 3290 "Read compiler commands from this file [.hotspot_compiler]") \ | |
| 3291 \ | |
| 3292 product(ccstrlist, CompileCommand, "", \ | |
| 3293 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
| 3294 \ | |
| 3295 product(bool, CICompilerCountPerCPU, false, \ | |
| 3296 "1 compiler thread for log(N CPUs)") \ | |
| 3297 \ | |
| 3298 develop(intx, CIFireOOMAt, -1, \ | |
| 3299 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
| 3300 "(non-negative value throws OOM after this many CI accesses " \ | |
| 3301 "in each compile)") \ | |
| 3302 \ | |
| 3303 develop(intx, CIFireOOMAtDelay, -1, \ | |
| 3304 "Wait for this many CI accesses to occur in all compiles before " \ | |
| 3305 "beginning to throw OutOfMemoryErrors in each compile") \ | |
| 3306 \ | |
|
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|
3307 notproduct(bool, CIObjectFactoryVerify, false, \ |
|
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|
3308 "enable potentially expensive verification in ciObjectFactory") \ |
|
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|
3309 \ |
| 0 | 3310 /* Priorities */ \ |
| 3311 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
| 3312 \ | |
| 3313 product(intx, ThreadPriorityPolicy, 0, \ | |
| 3314 "0 : Normal. "\ | |
| 3315 " VM chooses priorities that are appropriate for normal "\ | |
| 3316 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
| 3317 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
| 3318 " map to lower native priority values. On Windows applications"\ | |
| 3319 " are allowed to use higher native priorities. However, with "\ | |
| 3320 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
| 3321 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
| 3322 " interfere with system threads. On Linux thread priorities "\ | |
| 3323 " are ignored because the OS does not support static priority "\ | |
| 3324 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
| 3325 " non-root, non-realtime applications. "\ | |
| 3326 "1 : Aggressive. "\ | |
| 3327 " Java thread priorities map over to the entire range of "\ | |
| 3328 " native thread priorities. Higher Java thread priorities map "\ | |
| 3329 " to higher native thread priorities. This policy should be "\ | |
| 3330 " used with care, as sometimes it can cause performance "\ | |
| 3331 " degradation in the application and/or the entire system. On "\ | |
| 3332 " Linux this policy requires root privilege.") \ | |
| 3333 \ | |
| 3334 product(bool, ThreadPriorityVerbose, false, \ | |
| 3335 "print priority changes") \ | |
| 3336 \ | |
| 3337 product(intx, DefaultThreadPriority, -1, \ | |
| 3338 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ | |
| 3339 \ | |
| 3340 product(intx, CompilerThreadPriority, -1, \ | |
| 3341 "what priority should compiler threads run at (-1 means no change)") \ | |
| 3342 \ | |
| 3343 product(intx, VMThreadPriority, -1, \ | |
| 3344 "what priority should VM threads run at (-1 means no change)") \ | |
| 3345 \ | |
| 3346 product(bool, CompilerThreadHintNoPreempt, true, \ | |
| 3347 "(Solaris only) Give compiler threads an extra quanta") \ | |
| 3348 \ | |
| 3349 product(bool, VMThreadHintNoPreempt, false, \ | |
| 3350 "(Solaris only) Give VM thread an extra quanta") \ | |
| 3351 \ | |
| 3352 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3353 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3354 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3355 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3356 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3357 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3358 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3359 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3360 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3361 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
| 3362 \ | |
| 3363 /* compiler debugging */ \ | |
| 3364 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
| 3365 "First class to consider when using +CompileTheWorld") \ | |
| 3366 \ | |
| 3367 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
| 3368 "Last class to consider when using +CompileTheWorld") \ | |
| 3369 \ | |
| 3370 develop(intx, NewCodeParameter, 0, \ | |
| 3371 "Testing Only: Create a dedicated integer parameter before " \ | |
| 3372 "putback") \ | |
| 3373 \ | |
| 3374 /* new oopmap storage allocation */ \ | |
| 3375 develop(intx, MinOopMapAllocation, 8, \ | |
| 3376 "Minimum number of OopMap entries in an OopMapSet") \ | |
| 3377 \ | |
| 3378 /* Background Compilation */ \ | |
| 3379 develop(intx, LongCompileThreshold, 50, \ | |
| 3380 "Used with +TraceLongCompiles") \ | |
| 3381 \ | |
| 3382 product(intx, StarvationMonitorInterval, 200, \ | |
| 3383 "Pause between each check in ms") \ | |
| 3384 \ | |
| 3385 /* recompilation */ \ | |
| 3386 product_pd(intx, CompileThreshold, \ | |
| 3387 "number of interpreted method invocations before (re-)compiling") \ | |
| 3388 \ | |
| 3389 product_pd(intx, BackEdgeThreshold, \ | |
| 3390 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
| 3391 \ | |
| 1783 | 3392 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
| 3393 "Interpreter (tier 0) invocation notification frequency.") \ | |
| 3394 \ | |
| 3395 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
| 3396 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
| 3397 \ | |
| 3398 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
| 3399 "C1 with MDO profiling (tier 3) invocation notification " \ | |
| 3400 "frequency.") \ | |
| 3401 \ | |
| 3402 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ | |
| 3403 "Interpreter (tier 0) invocation notification frequency.") \ | |
| 3404 \ | |
| 3405 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
| 3406 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
| 3407 \ | |
| 3408 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
| 3409 "C1 with MDO profiling (tier 3) invocation notification " \ | |
| 3410 "frequency.") \ | |
| 3411 \ | |
| 3412 product(intx, Tier2CompileThreshold, 0, \ | |
| 3413 "threshold at which tier 2 compilation is invoked") \ | |
| 3414 \ | |
| 3415 product(intx, Tier2BackEdgeThreshold, 0, \ | |
| 3416 "Back edge threshold at which tier 2 compilation is invoked") \ | |
| 3417 \ | |
| 3418 product(intx, Tier3InvocationThreshold, 200, \ | |
| 3419 "Compile if number of method invocations crosses this " \ | |
| 3420 "threshold") \ | |
| 3421 \ | |
| 3422 product(intx, Tier3MinInvocationThreshold, 100, \ | |
| 3423 "Minimum invocation to compile at tier 3") \ | |
| 3424 \ | |
| 3425 product(intx, Tier3CompileThreshold, 2000, \ | |
| 3426 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
| 3427 "minimum must be satisfied.") \ | |
| 3428 \ | |
| 3429 product(intx, Tier3BackEdgeThreshold, 7000, \ | |
| 3430 "Back edge threshold at which tier 3 OSR compilation is invoked") \ | |
| 3431 \ | |
| 3432 product(intx, Tier4InvocationThreshold, 5000, \ | |
| 3433 "Compile if number of method invocations crosses this " \ | |
| 3434 "threshold") \ | |
| 3435 \ | |
| 3436 product(intx, Tier4MinInvocationThreshold, 600, \ | |
| 3437 "Minimum invocation to compile at tier 4") \ | |
| 3438 \ | |
| 3439 product(intx, Tier4CompileThreshold, 15000, \ | |
| 3440 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
| 3441 "minimum must be satisfied.") \ | |
| 3442 \ | |
| 3443 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
| 3444 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
| 3445 \ | |
| 3446 product(intx, Tier3DelayOn, 5, \ | |
| 3447 "If C2 queue size grows over this amount per compiler thread " \ | |
| 3448 "stop compiling at tier 3 and start compiling at tier 2") \ | |
| 3449 \ | |
| 3450 product(intx, Tier3DelayOff, 2, \ | |
| 3451 "If C2 queue size is less than this amount per compiler thread " \ | |
| 3452 "allow methods compiled at tier 2 transition to tier 3") \ | |
| 3453 \ | |
| 3454 product(intx, Tier3LoadFeedback, 5, \ | |
| 3455 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
| 3456 "reaches this amount per compiler thread") \ | |
| 3457 \ | |
| 3458 product(intx, Tier4LoadFeedback, 3, \ | |
| 3459 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
| 3460 "reaches this amount per compiler thread") \ | |
| 3461 \ | |
| 3462 product(intx, TieredCompileTaskTimeout, 50, \ | |
| 3463 "Kill compile task if method was not used within " \ | |
| 3464 "given timeout in milliseconds") \ | |
| 3465 \ | |
| 3466 product(intx, TieredStopAtLevel, 4, \ | |
| 3467 "Stop at given compilation level") \ | |
| 3468 \ | |
| 3469 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
| 3470 "Start profiling in interpreter if the counters exceed tier 3" \ | |
| 3471 "thresholds by the specified percentage") \ | |
| 3472 \ | |
| 3473 product(intx, TieredRateUpdateMinTime, 1, \ | |
| 3474 "Minimum rate sampling interval (in milliseconds)") \ | |
| 3475 \ | |
| 3476 product(intx, TieredRateUpdateMaxTime, 25, \ | |
| 3477 "Maximum rate sampling interval (in milliseconds)") \ | |
| 0 | 3478 \ |
| 3479 product_pd(bool, TieredCompilation, \ | |
| 1783 | 3480 "Enable tiered compilation") \ |
| 3481 \ | |
| 3482 product(bool, PrintTieredEvents, false, \ | |
| 3483 "Print tiered events notifications") \ | |
| 0 | 3484 \ |
| 3485 product(bool, StressTieredRuntime, false, \ | |
| 3486 "Alternate client and server compiler on compile requests") \ | |
| 3487 \ | |
| 3488 product_pd(intx, OnStackReplacePercentage, \ | |
| 3489 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
| 3490 "of CompileThreshold) before (re-)compiling OSR code") \ | |
| 3491 \ | |
| 3492 product(intx, InterpreterProfilePercentage, 33, \ | |
| 3493 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
| 3494 "of CompileThreshold) before profiling in the interpreter") \ | |
| 3495 \ | |
| 3496 develop(intx, MaxRecompilationSearchLength, 10, \ | |
| 3497 "max. # frames to inspect searching for recompilee") \ | |
| 3498 \ | |
| 3499 develop(intx, MaxInterpretedSearchLength, 3, \ | |
| 3500 "max. # interp. frames to skip when searching for recompilee") \ | |
| 3501 \ | |
| 3502 develop(intx, DesiredMethodLimit, 8000, \ | |
| 3503 "desired max. method size (in bytecodes) after inlining") \ | |
| 3504 \ | |
| 3505 develop(intx, HugeMethodLimit, 8000, \ | |
| 3506 "don't compile methods larger than this if " \ | |
| 3507 "+DontCompileHugeMethods") \ | |
| 3508 \ | |
| 3509 /* New JDK 1.4 reflection implementation */ \ | |
| 3510 \ | |
| 3511 develop(bool, UseNewReflection, true, \ | |
| 3512 "Temporary flag for transition to reflection based on dynamic " \ | |
| 3513 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
| 3514 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
| 3515 "changes were needed") \ | |
| 3516 \ | |
| 3517 develop(bool, VerifyReflectionBytecodes, false, \ | |
| 3518 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
| 3519 "in situations like that described in 4486457 or for " \ | |
| 3520 "constructors generated for serialization, so can not be enabled "\ | |
| 3521 "in product.") \ | |
| 3522 \ | |
| 3523 product(bool, ReflectionWrapResolutionErrors, true, \ | |
| 3524 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
| 3525 "in InvocationTargetException. See 6531596") \ | |
| 3526 \ | |
| 3527 \ | |
| 3528 develop(intx, FastSuperclassLimit, 8, \ | |
| 3529 "Depth of hardwired instanceof accelerator array") \ | |
| 3530 \ | |
| 3531 /* Properties for Java libraries */ \ | |
| 3532 \ | |
| 3533 product(intx, MaxDirectMemorySize, -1, \ | |
| 3534 "Maximum total size of NIO direct-buffer allocations") \ | |
| 3535 \ | |
| 3536 /* temporary developer defined flags */ \ | |
| 3537 \ | |
| 3538 diagnostic(bool, UseNewCode, false, \ | |
| 3539 "Testing Only: Use the new version while testing") \ | |
| 3540 \ | |
| 3541 diagnostic(bool, UseNewCode2, false, \ | |
| 3542 "Testing Only: Use the new version while testing") \ | |
| 3543 \ | |
| 3544 diagnostic(bool, UseNewCode3, false, \ | |
| 3545 "Testing Only: Use the new version while testing") \ | |
| 3546 \ | |
| 3547 /* flags for performance data collection */ \ | |
| 3548 \ | |
| 3549 product(bool, UsePerfData, true, \ | |
| 3550 "Flag to disable jvmstat instrumentation for performance testing" \ | |
| 3551 "and problem isolation purposes.") \ | |
| 3552 \ | |
| 3553 product(bool, PerfDataSaveToFile, false, \ | |
| 3554 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
| 3555 \ | |
| 3556 product(ccstr, PerfDataSaveFile, NULL, \ | |
| 3557 "Save PerfData memory to the specified absolute pathname," \ | |
| 3558 "%p in the file name if present will be replaced by pid") \ | |
| 3559 \ | |
| 3560 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
| 3561 "Data sampling interval in milliseconds") \ | |
| 3562 \ | |
| 3563 develop(bool, PerfTraceDataCreation, false, \ | |
| 3564 "Trace creation of Performance Data Entries") \ | |
| 3565 \ | |
| 3566 develop(bool, PerfTraceMemOps, false, \ | |
| 3567 "Trace PerfMemory create/attach/detach calls") \ | |
| 3568 \ | |
| 3569 product(bool, PerfDisableSharedMem, false, \ | |
| 3570 "Store performance data in standard memory") \ | |
| 3571 \ | |
| 3572 product(intx, PerfDataMemorySize, 32*K, \ | |
| 3573 "Size of performance data memory region. Will be rounded " \ | |
| 3574 "up to a multiple of the native os page size.") \ | |
| 3575 \ | |
| 3576 product(intx, PerfMaxStringConstLength, 1024, \ | |
| 3577 "Maximum PerfStringConstant string length before truncation") \ | |
| 3578 \ | |
| 3579 product(bool, PerfAllowAtExitRegistration, false, \ | |
| 3580 "Allow registration of atexit() methods") \ | |
| 3581 \ | |
| 3582 product(bool, PerfBypassFileSystemCheck, false, \ | |
| 3583 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
| 3584 \ | |
| 3585 product(intx, UnguardOnExecutionViolation, 0, \ | |
| 3586 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
| 3587 "0=off, 1=conservative, 2=aggressive") \ | |
| 3588 \ | |
| 3589 /* Serviceability Support */ \ | |
| 3590 \ | |
| 3591 product(bool, ManagementServer, false, \ | |
| 3592 "Create JMX Management Server") \ | |
| 3593 \ | |
| 3594 product(bool, DisableAttachMechanism, false, \ | |
| 3595 "Disable mechanism that allows tools to attach to this VM") \ | |
| 3596 \ | |
| 3597 product(bool, StartAttachListener, false, \ | |
| 3598 "Always start Attach Listener at VM startup") \ | |
| 3599 \ | |
| 3600 manageable(bool, PrintConcurrentLocks, false, \ | |
| 3601 "Print java.util.concurrent locks in thread dump") \ | |
| 3602 \ | |
| 3603 /* Shared spaces */ \ | |
| 3604 \ | |
| 3605 product(bool, UseSharedSpaces, true, \ | |
| 3606 "Use shared spaces in the permanent generation") \ | |
| 3607 \ | |
| 3608 product(bool, RequireSharedSpaces, false, \ | |
| 3609 "Require shared spaces in the permanent generation") \ | |
| 3610 \ | |
| 3611 product(bool, ForceSharedSpaces, false, \ | |
| 3612 "Require shared spaces in the permanent generation") \ | |
| 3613 \ | |
| 3614 product(bool, DumpSharedSpaces, false, \ | |
| 3615 "Special mode: JVM reads a class list, loads classes, builds " \ | |
| 3616 "shared spaces, and dumps the shared spaces to a file to be " \ | |
| 3617 "used in future JVM runs.") \ | |
| 3618 \ | |
| 3619 product(bool, PrintSharedSpaces, false, \ | |
| 3620 "Print usage of shared spaces") \ | |
| 3621 \ | |
| 3622 product(uintx, SharedDummyBlockSize, 512*M, \ | |
| 3623 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
| 3624 \ | |
| 1875 | 3625 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \ |
| 0 | 3626 "Size of read-write space in permanent generation (in bytes)") \ |
| 3627 \ | |
|
910
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3628 product(uintx, SharedReadOnlySize, 10*M, \ |
| 0 | 3629 "Size of read-only space in permanent generation (in bytes)") \ |
| 3630 \ | |
| 3631 product(uintx, SharedMiscDataSize, 4*M, \ | |
| 3632 "Size of the shared data area adjacent to the heap (in bytes)") \ | |
| 3633 \ | |
| 3634 product(uintx, SharedMiscCodeSize, 4*M, \ | |
| 3635 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
| 3636 \ | |
| 3637 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
| 3638 "At dump time, order shared objects to achieve better " \ | |
| 3639 "cold startup time.") \ | |
| 3640 \ | |
| 3641 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
| 3642 "Reordering policy for SharedOptimizeColdStart " \ | |
| 3643 "0=favor classload-time locality, 1=balanced, " \ | |
| 3644 "2=favor runtime locality") \ | |
| 3645 \ | |
| 3646 diagnostic(bool, SharedSkipVerify, false, \ | |
| 3647 "Skip assert() and verify() which page-in unwanted shared " \ | |
| 3648 "objects. ") \ | |
| 3649 \ | |
|
431
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|
3650 product(bool, AnonymousClasses, false, \ |
|
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diff
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|
3651 "support sun.misc.Unsafe.defineAnonymousClass") \ |
|
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|
3652 \ |
|
905
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|
3653 experimental(bool, EnableMethodHandles, false, \ |
| 710 | 3654 "support method handles (true by default under JSR 292)") \ |
| 3655 \ | |
| 3656 diagnostic(intx, MethodHandlePushLimit, 3, \ | |
| 3657 "number of additional stack slots a method handle may push") \ | |
| 3658 \ | |
| 3659 develop(bool, TraceMethodHandles, false, \ | |
| 3660 "trace internal method handle operations") \ | |
| 3661 \ | |
| 3662 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
| 3663 "perform extra checks when constructing method handles") \ | |
| 3664 \ | |
| 3665 diagnostic(bool, OptimizeMethodHandles, true, \ | |
| 3666 "when constructing method handles, try to improve them") \ | |
| 3667 \ | |
|
1173
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|
3668 experimental(bool, TrustFinalNonStaticFields, false, \ |
|
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1157
diff
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|
3669 "trust final non-static declarations for constant folding") \ |
|
73b22f919c34
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|
3670 \ |
|
905
bd2b1f617a4e
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|
3671 experimental(bool, EnableInvokeDynamic, false, \ |
|
726
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diff
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|
3672 "recognize the invokedynamic instruction") \ |
|
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6655646: dynamic languages need dynamically linked call sites
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diff
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|
3673 \ |
|
1660
083fde3b838e
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diff
changeset
|
3674 experimental(bool, AllowTransitionalJSR292, true, \ |
|
083fde3b838e
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|
3675 "recognize pre-PFD formats of invokedynamic") \ |
|
083fde3b838e
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jrose
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diff
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|
3676 \ |
|
726
be93aad57795
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diff
changeset
|
3677 develop(bool, TraceInvokeDynamic, false, \ |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
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|
3678 "trace internal invoke dynamic operations") \ |
|
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|
3679 \ |
| 0 | 3680 diagnostic(bool, PauseAtStartup, false, \ |
| 3681 "Causes the VM to pause at startup time and wait for the pause " \ | |
| 3682 "file to be removed (default: ./vm.paused.<pid>)") \ | |
| 3683 \ | |
| 3684 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
| 3685 "The file to create and for whose removal to await when pausing " \ | |
| 3686 "at startup. (default: ./vm.paused.<pid>)") \ | |
| 3687 \ | |
| 3688 product(bool, ExtendedDTraceProbes, false, \ | |
| 3689 "Enable performance-impacting dtrace probes") \ | |
| 3690 \ | |
| 3691 product(bool, DTraceMethodProbes, false, \ | |
| 3692 "Enable dtrace probes for method-entry and method-exit") \ | |
| 3693 \ | |
| 3694 product(bool, DTraceAllocProbes, false, \ | |
| 3695 "Enable dtrace probes for object allocation") \ | |
| 3696 \ | |
| 3697 product(bool, DTraceMonitorProbes, false, \ | |
| 3698 "Enable dtrace probes for monitor events") \ | |
| 3699 \ | |
| 3700 product(bool, RelaxAccessControlCheck, false, \ | |
| 3701 "Relax the access control checks in the verifier") \ | |
| 3702 \ | |
|
116
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|
3703 diagnostic(bool, PrintDTraceDOF, false, \ |
|
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|
3704 "Print the DTrace DOF passed to the system for JSDT probes") \ |
|
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|
3705 \ |
|
449
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443
diff
changeset
|
3706 product(bool, UseVMInterruptibleIO, false, \ |
| 0 | 3707 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
|
449
171e581e8161
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443
diff
changeset
|
3708 "EINTR for I/O operations results in OS_INTRPT. The default value"\ |
|
171e581e8161
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443
diff
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|
3709 " of this flag is true for JDK 6 and earliers") |
| 0 | 3710 |
| 3711 /* | |
| 3712 * Macros for factoring of globals | |
| 3713 */ | |
| 3714 | |
| 3715 // Interface macros | |
| 3716 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
| 3717 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
| 3718 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
|
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|
3719 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
| 0 | 3720 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
| 3721 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
| 3722 #ifdef PRODUCT | |
| 3723 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
| 3724 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
| 3725 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
| 3726 #else | |
| 3727 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
| 3728 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
| 3729 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
| 3730 #endif | |
|
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109
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|
3731 // Special LP64 flags, product only needed for now. |
|
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|
3732 #ifdef _LP64 |
|
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|
3733 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
|
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|
3734 #else |
|
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|
3735 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; |
|
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|
3736 #endif // _LP64 |
| 0 | 3737 |
| 3738 // Implementation macros | |
| 3739 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
| 3740 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
| 3741 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
|
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|
3742 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
| 0 | 3743 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
| 3744 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
| 3745 #ifdef PRODUCT | |
| 3746 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
| 3747 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
| 3748 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
| 3749 #else | |
| 3750 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
| 3751 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
| 3752 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
| 3753 #endif | |
|
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|
3754 #ifdef _LP64 |
|
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3755 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
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3756 #else |
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3757 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
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3758 #endif // _LP64 |
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3760 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 | 3761 |
| 3762 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
| 1972 | 3763 |
| 3764 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |