Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/globals.hpp @ 481:7d7a7c599c17
6578152: fill_region_with_object has usability and safety issues
Reviewed-by: apetrusenko, ysr
| author | jcoomes |
|---|---|
| date | Thu, 11 Dec 2008 12:05:08 -0800 |
| parents | 85f1b9537f70 |
| children | 0f773163217d |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #if !defined(COMPILER1) && !defined(COMPILER2) | |
| 26 define_pd_global(bool, BackgroundCompilation, false); | |
| 27 define_pd_global(bool, UseTLAB, false); | |
| 28 define_pd_global(bool, CICompileOSR, false); | |
| 29 define_pd_global(bool, UseTypeProfile, false); | |
| 30 define_pd_global(bool, UseOnStackReplacement, false); | |
| 31 define_pd_global(bool, InlineIntrinsics, false); | |
| 32 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
| 33 define_pd_global(bool, ProfileInterpreter, false); | |
| 34 define_pd_global(bool, ProfileTraps, false); | |
| 35 define_pd_global(bool, TieredCompilation, false); | |
| 36 | |
| 37 define_pd_global(intx, CompileThreshold, 0); | |
| 38 define_pd_global(intx, Tier2CompileThreshold, 0); | |
| 39 define_pd_global(intx, Tier3CompileThreshold, 0); | |
| 40 define_pd_global(intx, Tier4CompileThreshold, 0); | |
| 41 | |
| 42 define_pd_global(intx, BackEdgeThreshold, 0); | |
| 43 define_pd_global(intx, Tier2BackEdgeThreshold, 0); | |
| 44 define_pd_global(intx, Tier3BackEdgeThreshold, 0); | |
| 45 define_pd_global(intx, Tier4BackEdgeThreshold, 0); | |
| 46 | |
| 47 define_pd_global(intx, OnStackReplacePercentage, 0); | |
| 48 define_pd_global(bool, ResizeTLAB, false); | |
| 49 define_pd_global(intx, FreqInlineSize, 0); | |
| 50 define_pd_global(intx, NewSizeThreadIncrease, 4*K); | |
| 51 define_pd_global(intx, NewRatio, 4); | |
| 52 define_pd_global(intx, InlineClassNatives, true); | |
| 53 define_pd_global(intx, InlineUnsafeOps, true); | |
| 54 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
| 55 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
| 56 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
| 57 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
| 58 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); | |
| 59 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); | |
| 60 define_pd_global(bool, NeverActAsServerClassMachine, true); | |
| 61 define_pd_global(uintx, DefaultMaxRAM, 1*G); | |
| 62 #define CI_COMPILER_COUNT 0 | |
| 63 #else | |
| 64 | |
| 65 #ifdef COMPILER2 | |
| 66 #define CI_COMPILER_COUNT 2 | |
| 67 #else | |
| 68 #define CI_COMPILER_COUNT 1 | |
| 69 #endif // COMPILER2 | |
| 70 | |
| 71 #endif // no compilers | |
| 72 | |
| 73 | |
| 74 // string type aliases used only in this file | |
| 75 typedef const char* ccstr; | |
| 76 typedef const char* ccstrlist; // represents string arguments which accumulate | |
| 77 | |
| 78 enum FlagValueOrigin { | |
| 79 DEFAULT = 0, | |
| 80 COMMAND_LINE = 1, | |
| 81 ENVIRON_VAR = 2, | |
| 82 CONFIG_FILE = 3, | |
| 83 MANAGEMENT = 4, | |
| 84 ERGONOMIC = 5, | |
| 85 ATTACH_ON_DEMAND = 6, | |
| 86 INTERNAL = 99 | |
| 87 }; | |
| 88 | |
| 89 struct Flag { | |
| 90 const char *type; | |
| 91 const char *name; | |
| 92 void* addr; | |
| 93 const char *kind; | |
| 94 FlagValueOrigin origin; | |
| 95 | |
| 96 // points to all Flags static array | |
| 97 static Flag *flags; | |
| 98 | |
| 99 // number of flags | |
| 100 static size_t numFlags; | |
| 101 | |
| 102 static Flag* find_flag(char* name, size_t length); | |
| 103 | |
| 104 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
| 105 bool get_bool() const { return *((bool*) addr); } | |
| 106 void set_bool(bool value) { *((bool*) addr) = value; } | |
| 107 | |
| 108 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
| 109 intx get_intx() const { return *((intx*) addr); } | |
| 110 void set_intx(intx value) { *((intx*) addr) = value; } | |
| 111 | |
| 112 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
| 113 uintx get_uintx() const { return *((uintx*) addr); } | |
| 114 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
| 115 | |
| 116 bool is_double() const { return strcmp(type, "double") == 0; } | |
| 117 double get_double() const { return *((double*) addr); } | |
| 118 void set_double(double value) { *((double*) addr) = value; } | |
| 119 | |
| 120 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
| 121 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
| 122 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
| 123 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
| 124 | |
| 125 bool is_unlocker() const; | |
| 126 bool is_unlocked() const; | |
| 127 bool is_writeable() const; | |
| 128 bool is_external() const; | |
| 129 | |
| 130 void print_on(outputStream* st); | |
| 131 void print_as_flag(outputStream* st); | |
| 132 }; | |
| 133 | |
| 134 // debug flags control various aspects of the VM and are global accessible | |
| 135 | |
| 136 // use FlagSetting to temporarily change some debug flag | |
| 137 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
| 138 // restored to previous value upon leaving scope | |
| 139 class FlagSetting { | |
| 140 bool val; | |
| 141 bool* flag; | |
| 142 public: | |
| 143 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 144 ~FlagSetting() { *flag = val; } | |
| 145 }; | |
| 146 | |
| 147 | |
| 148 class CounterSetting { | |
| 149 intx* counter; | |
| 150 public: | |
| 151 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
| 152 ~CounterSetting() { (*counter)--; } | |
| 153 }; | |
| 154 | |
| 155 | |
| 156 class IntFlagSetting { | |
| 157 intx val; | |
| 158 intx* flag; | |
| 159 public: | |
| 160 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 161 ~IntFlagSetting() { *flag = val; } | |
| 162 }; | |
| 163 | |
| 164 | |
| 165 class DoubleFlagSetting { | |
| 166 double val; | |
| 167 double* flag; | |
| 168 public: | |
| 169 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
| 170 ~DoubleFlagSetting() { *flag = val; } | |
| 171 }; | |
| 172 | |
| 173 | |
| 174 class CommandLineFlags { | |
| 175 public: | |
| 176 static bool boolAt(char* name, size_t len, bool* value); | |
| 177 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
| 178 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
| 179 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
| 180 | |
| 181 static bool intxAt(char* name, size_t len, intx* value); | |
| 182 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
| 183 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
| 184 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
| 185 | |
| 186 static bool uintxAt(char* name, size_t len, uintx* value); | |
| 187 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
| 188 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
| 189 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
| 190 | |
| 191 static bool doubleAt(char* name, size_t len, double* value); | |
| 192 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
| 193 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
| 194 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
| 195 | |
| 196 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
| 197 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
| 198 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
| 199 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
| 200 | |
| 201 // Returns false if name is not a command line flag. | |
| 202 static bool wasSetOnCmdline(const char* name, bool* value); | |
| 203 static void printSetFlags(); | |
| 204 | |
| 205 static void printFlags() PRODUCT_RETURN; | |
| 206 | |
| 207 static void verify() PRODUCT_RETURN; | |
| 208 }; | |
| 209 | |
| 210 // use this for flags that are true by default in the debug version but | |
| 211 // false in the optimized version, and vice versa | |
| 212 #ifdef ASSERT | |
| 213 #define trueInDebug true | |
| 214 #define falseInDebug false | |
| 215 #else | |
| 216 #define trueInDebug false | |
| 217 #define falseInDebug true | |
| 218 #endif | |
| 219 | |
| 220 // use this for flags that are true per default in the product build | |
| 221 // but false in development builds, and vice versa | |
| 222 #ifdef PRODUCT | |
| 223 #define trueInProduct true | |
| 224 #define falseInProduct false | |
| 225 #else | |
| 226 #define trueInProduct false | |
| 227 #define falseInProduct true | |
| 228 #endif | |
| 229 | |
| 230 // use this for flags that are true per default in the tiered build | |
| 231 // but false in non-tiered builds, and vice versa | |
| 232 #ifdef TIERED | |
| 233 #define trueInTiered true | |
| 234 #define falseInTiered false | |
| 235 #else | |
| 236 #define trueInTiered false | |
| 237 #define falseInTiered true | |
| 238 #endif | |
| 239 | |
| 240 // develop flags are settable / visible only during development and are constant in the PRODUCT version | |
| 241 // product flags are always settable / visible | |
| 242 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
| 243 | |
| 244 // A flag must be declared with one of the following types: | |
| 245 // bool, intx, uintx, ccstr. | |
| 246 // The type "ccstr" is an alias for "const char*" and is used | |
| 247 // only in this file, because the macrology requires single-token type names. | |
| 248 | |
| 249 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
| 250 // They are to be used for VM quality assurance or field diagnosis | |
| 251 // of VM bugs. They are hidden so that users will not be encouraged to | |
| 252 // try them as if they were VM ordinary execution options. However, they | |
| 253 // are available in the product version of the VM. Under instruction | |
| 254 // from support engineers, VM customers can turn them on to collect | |
| 255 // diagnostic information about VM problems. To use a VM diagnostic | |
| 256 // option, you must first specify +UnlockDiagnosticVMOptions. | |
| 257 // (This master switch also affects the behavior of -Xprintflags.) | |
|
350
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258 // |
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259 // experimental flags are in support of features that are not |
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260 // part of the officially supported product, but are available |
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261 // for experimenting with. They could, for example, be performance |
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262 // features that may not have undergone full or rigorous QA, but which may |
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263 // help performance in some cases and released for experimentation |
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264 // by the community of users and developers. This flag also allows one to |
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265 // be able to build a fully supported product that nonetheless also |
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266 // ships with some unsupported, lightly tested, experimental features. |
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267 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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268 // UnlockExperimentalVMOptions flag, which allows the control and |
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269 // modification of the experimental flags. |
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270 // |
| 0 | 271 // manageable flags are writeable external product flags. |
| 272 // They are dynamically writeable through the JDK management interface | |
| 273 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
| 274 // These flags are external exported interface (see CCC). The list of | |
| 275 // manageable flags can be queried programmatically through the management | |
| 276 // interface. | |
| 277 // | |
| 278 // A flag can be made as "manageable" only if | |
| 279 // - the flag is defined in a CCC as an external exported interface. | |
| 280 // - the VM implementation supports dynamic setting of the flag. | |
| 281 // This implies that the VM must *always* query the flag variable | |
| 282 // and not reuse state related to the flag state at any given time. | |
| 283 // - you want the flag to be queried programmatically by the customers. | |
| 284 // | |
| 285 // product_rw flags are writeable internal product flags. | |
| 286 // They are like "manageable" flags but for internal/private use. | |
| 287 // The list of product_rw flags are internal/private flags which | |
| 288 // may be changed/removed in a future release. It can be set | |
| 289 // through the management interface to get/set value | |
| 290 // when the name of flag is supplied. | |
| 291 // | |
| 292 // A flag can be made as "product_rw" only if | |
| 293 // - the VM implementation supports dynamic setting of the flag. | |
| 294 // This implies that the VM must *always* query the flag variable | |
| 295 // and not reuse state related to the flag state at any given time. | |
| 296 // | |
| 297 // Note that when there is a need to support develop flags to be writeable, | |
| 298 // it can be done in the same way as product_rw. | |
| 299 | |
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300 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
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301 \ |
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302 lp64_product(bool, UseCompressedOops, false, \ |
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303 "Use 32-bit object references in 64-bit VM. " \ |
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304 "lp64_product means flag is always constant in 32 bit VM") \ |
| 0 | 305 \ |
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306 lp64_product(bool, CheckCompressedOops, trueInDebug, \ |
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307 "generate checks in encoding/decoding code") \ |
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308 \ |
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325
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309 product(bool, UseImplicitNullCheckForNarrowOop, true, \ |
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310 "generate implicit null check in indexed addressing mode.") \ |
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311 \ |
| 0 | 312 /* UseMembar is theoretically a temp flag used for memory barrier \ |
| 313 * removal testing. It was supposed to be removed before FCS but has \ | |
| 314 * been re-added (see 6401008) */ \ | |
| 315 product(bool, UseMembar, false, \ | |
| 316 "(Unstable) Issues membars on thread state transitions") \ | |
| 317 \ | |
| 318 product(bool, PrintCommandLineFlags, false, \ | |
| 319 "Prints flags that appeared on the command line") \ | |
| 320 \ | |
| 321 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ | |
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322 "Enable normal processing of flags relating to field diagnostics")\ |
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323 \ |
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324 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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325 "Enable normal processing of flags relating to experimental features")\ |
| 0 | 326 \ |
| 327 product(bool, JavaMonitorsInStackTrace, true, \ | |
| 328 "Print info. about Java monitor locks when the stacks are dumped")\ | |
| 329 \ | |
| 330 product_pd(bool, UseLargePages, \ | |
| 331 "Use large page memory") \ | |
| 332 \ | |
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333 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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334 "Allocate large pages individually for better affinity") \ |
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335 \ |
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336 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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337 "Fail large pages individual allocation") \ |
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338 \ |
| 0 | 339 develop(bool, TracePageSizes, false, \ |
| 340 "Trace page size selection and usage.") \ | |
| 341 \ | |
| 342 product(bool, UseNUMA, false, \ | |
| 343 "Use NUMA if available") \ | |
| 344 \ | |
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345 product(bool, ForceNUMA, false, \ |
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346 "Force NUMA optimizations on single-node/UMA systems") \ |
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347 \ |
| 0 | 348 product(intx, NUMAChunkResizeWeight, 20, \ |
| 349 "Percentage (0-100) used to weight the current sample when " \ | |
| 350 "computing exponentially decaying average for " \ | |
| 351 "AdaptiveNUMAChunkSizing") \ | |
| 352 \ | |
| 353 product(intx, NUMASpaceResizeRate, 1*G, \ | |
| 354 "Do not reallocate more that this amount per collection") \ | |
| 355 \ | |
| 356 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
| 357 "Enable adaptive chunk sizing for NUMA") \ | |
| 358 \ | |
| 359 product(bool, NUMAStats, false, \ | |
| 360 "Print NUMA stats in detailed heap information") \ | |
| 361 \ | |
| 362 product(intx, NUMAPageScanRate, 256, \ | |
| 363 "Maximum number of pages to include in the page scan procedure") \ | |
| 364 \ | |
| 365 product_pd(bool, NeedsDeoptSuspend, \ | |
| 366 "True for register window machines (sparc/ia64)") \ | |
| 367 \ | |
| 368 product(intx, UseSSE, 99, \ | |
| 369 "Highest supported SSE instructions set on x86/x64") \ | |
| 370 \ | |
| 371 product(uintx, LargePageSizeInBytes, 0, \ | |
| 372 "Large page size (0 to let VM choose the page size") \ | |
| 373 \ | |
| 374 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
| 375 "Use large pages if max heap is at least this big") \ | |
| 376 \ | |
| 377 product(bool, ForceTimeHighResolution, false, \ | |
| 378 "Using high time resolution(For Win32 only)") \ | |
| 379 \ | |
| 380 develop(bool, TraceItables, false, \ | |
| 381 "Trace initialization and use of itables") \ | |
| 382 \ | |
| 383 develop(bool, TracePcPatching, false, \ | |
| 384 "Trace usage of frame::patch_pc") \ | |
| 385 \ | |
| 386 develop(bool, TraceJumps, false, \ | |
| 387 "Trace assembly jumps in thread ring buffer") \ | |
| 388 \ | |
| 389 develop(bool, TraceRelocator, false, \ | |
| 390 "Trace the bytecode relocator") \ | |
| 391 \ | |
| 392 develop(bool, TraceLongCompiles, false, \ | |
| 393 "Print out every time compilation is longer than " \ | |
| 394 "a given threashold") \ | |
| 395 \ | |
| 396 develop(bool, SafepointALot, false, \ | |
| 397 "Generates a lot of safepoints. Works with " \ | |
| 398 "GuaranteedSafepointInterval") \ | |
| 399 \ | |
| 400 product_pd(bool, BackgroundCompilation, \ | |
| 401 "A thread requesting compilation is not blocked during " \ | |
| 402 "compilation") \ | |
| 403 \ | |
| 404 product(bool, PrintVMQWaitTime, false, \ | |
| 405 "Prints out the waiting time in VM operation queue") \ | |
| 406 \ | |
| 407 develop(bool, BailoutToInterpreterForThrows, false, \ | |
| 408 "Compiled methods which throws/catches exceptions will be " \ | |
| 409 "deopt and intp.") \ | |
| 410 \ | |
| 411 develop(bool, NoYieldsInMicrolock, false, \ | |
| 412 "Disable yields in microlock") \ | |
| 413 \ | |
| 414 develop(bool, TraceOopMapGeneration, false, \ | |
| 415 "Shows oopmap generation") \ | |
| 416 \ | |
| 417 product(bool, MethodFlushing, true, \ | |
| 418 "Reclamation of zombie and not-entrant methods") \ | |
| 419 \ | |
| 420 develop(bool, VerifyStack, false, \ | |
| 421 "Verify stack of each thread when it is entering a runtime call") \ | |
| 422 \ | |
| 423 develop(bool, ForceUnreachable, false, \ | |
| 424 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ | |
| 425 \ | |
| 426 notproduct(bool, StressDerivedPointers, false, \ | |
| 427 "Force scavenge when a derived pointers is detected on stack " \ | |
| 428 "after rtm call") \ | |
| 429 \ | |
| 430 develop(bool, TraceDerivedPointers, false, \ | |
| 431 "Trace traversal of derived pointers on stack") \ | |
| 432 \ | |
| 433 notproduct(bool, TraceCodeBlobStacks, false, \ | |
| 434 "Trace stack-walk of codeblobs") \ | |
| 435 \ | |
| 436 product(bool, PrintJNIResolving, false, \ | |
| 437 "Used to implement -v:jni") \ | |
| 438 \ | |
| 439 notproduct(bool, PrintRewrites, false, \ | |
| 440 "Print methods that are being rewritten") \ | |
| 441 \ | |
| 442 product(bool, UseInlineCaches, true, \ | |
| 443 "Use Inline Caches for virtual calls ") \ | |
| 444 \ | |
| 445 develop(bool, InlineArrayCopy, true, \ | |
| 446 "inline arraycopy native that is known to be part of " \ | |
| 447 "base library DLL") \ | |
| 448 \ | |
| 449 develop(bool, InlineObjectHash, true, \ | |
| 450 "inline Object::hashCode() native that is known to be part " \ | |
| 451 "of base library DLL") \ | |
| 452 \ | |
| 453 develop(bool, InlineObjectCopy, true, \ | |
| 454 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ | |
| 455 \ | |
| 456 develop(bool, InlineNatives, true, \ | |
| 457 "inline natives that are known to be part of base library DLL") \ | |
| 458 \ | |
| 459 develop(bool, InlineMathNatives, true, \ | |
| 460 "inline SinD, CosD, etc.") \ | |
| 461 \ | |
| 462 develop(bool, InlineClassNatives, true, \ | |
| 463 "inline Class.isInstance, etc") \ | |
| 464 \ | |
| 465 develop(bool, InlineAtomicLong, true, \ | |
| 466 "inline sun.misc.AtomicLong") \ | |
| 467 \ | |
| 468 develop(bool, InlineThreadNatives, true, \ | |
| 469 "inline Thread.currentThread, etc") \ | |
| 470 \ | |
| 471 develop(bool, InlineReflectionGetCallerClass, true, \ | |
| 472 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ | |
| 473 "of base library DLL") \ | |
| 474 \ | |
| 475 develop(bool, InlineUnsafeOps, true, \ | |
| 476 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
| 477 \ | |
| 478 develop(bool, ConvertCmpD2CmpF, true, \ | |
| 479 "Convert cmpD to cmpF when one input is constant in float range") \ | |
| 480 \ | |
| 481 develop(bool, ConvertFloat2IntClipping, true, \ | |
| 482 "Convert float2int clipping idiom to integer clipping") \ | |
| 483 \ | |
| 484 develop(bool, SpecialStringCompareTo, true, \ | |
| 485 "special version of string compareTo") \ | |
| 486 \ | |
| 487 develop(bool, SpecialStringIndexOf, true, \ | |
| 488 "special version of string indexOf") \ | |
| 489 \ | |
|
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490 product(bool, SpecialArraysEquals, false, \ |
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491 "special version of Arrays.equals(char[],char[])") \ |
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492 \ |
| 0 | 493 develop(bool, TraceCallFixup, false, \ |
| 494 "traces all call fixups") \ | |
| 495 \ | |
| 496 develop(bool, DeoptimizeALot, false, \ | |
| 497 "deoptimize at every exit from the runtime system") \ | |
| 498 \ | |
| 434 | 499 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
| 0 | 500 "a comma separated list of bcis to deoptimize at") \ |
| 501 \ | |
| 502 product(bool, DeoptimizeRandom, false, \ | |
| 503 "deoptimize random frames on random exit from the runtime system")\ | |
| 504 \ | |
| 505 notproduct(bool, ZombieALot, false, \ | |
| 506 "creates zombies (non-entrant) at exit from the runt. system") \ | |
| 507 \ | |
| 508 notproduct(bool, WalkStackALot, false, \ | |
| 509 "trace stack (no print) at every exit from the runtime system") \ | |
| 510 \ | |
| 511 develop(bool, Debugging, false, \ | |
| 512 "set when executing debug methods in debug.ccp " \ | |
| 513 "(to prevent triggering assertions)") \ | |
| 514 \ | |
| 515 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
| 516 "Enable strict checks that safepoints cannot happen for threads " \ | |
| 517 "that used No_Safepoint_Verifier") \ | |
| 518 \ | |
| 519 notproduct(bool, VerifyLastFrame, false, \ | |
| 520 "Verify oops on last frame on entry to VM") \ | |
| 521 \ | |
| 522 develop(bool, TraceHandleAllocation, false, \ | |
| 523 "Prints out warnings when suspicious many handles are allocated") \ | |
| 524 \ | |
| 525 product(bool, UseCompilerSafepoints, true, \ | |
| 526 "Stop at safepoints in compiled code") \ | |
| 527 \ | |
| 528 product(bool, UseSplitVerifier, true, \ | |
| 529 "use split verifier with StackMapTable attributes") \ | |
| 530 \ | |
| 531 product(bool, FailOverToOldVerifier, true, \ | |
| 532 "fail over to old verifier when split verifier fails") \ | |
| 533 \ | |
| 534 develop(bool, ShowSafepointMsgs, false, \ | |
| 535 "Show msg. about safepoint synch.") \ | |
| 536 \ | |
| 537 product(bool, SafepointTimeout, false, \ | |
| 538 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
| 539 "milliseconds if failed to reach safepoint") \ | |
| 540 \ | |
| 541 develop(bool, DieOnSafepointTimeout, false, \ | |
| 542 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
| 543 \ | |
| 544 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
| 545 /* typically, at most a few retries are needed */ \ | |
| 546 product(intx, SuspendRetryCount, 50, \ | |
| 547 "Maximum retry count for an external suspend request") \ | |
| 548 \ | |
| 549 product(intx, SuspendRetryDelay, 5, \ | |
| 550 "Milliseconds to delay per retry (* current_retry_count)") \ | |
| 551 \ | |
| 552 product(bool, AssertOnSuspendWaitFailure, false, \ | |
| 553 "Assert/Guarantee on external suspend wait failure") \ | |
| 554 \ | |
| 555 product(bool, TraceSuspendWaitFailures, false, \ | |
| 556 "Trace external suspend wait failures") \ | |
| 557 \ | |
| 558 product(bool, MaxFDLimit, true, \ | |
| 559 "Bump the number of file descriptors to max in solaris.") \ | |
| 560 \ | |
| 561 notproduct(bool, LogEvents, trueInDebug, \ | |
| 562 "Enable Event log") \ | |
| 563 \ | |
| 564 product(bool, BytecodeVerificationRemote, true, \ | |
| 565 "Enables the Java bytecode verifier for remote classes") \ | |
| 566 \ | |
| 567 product(bool, BytecodeVerificationLocal, false, \ | |
| 568 "Enables the Java bytecode verifier for local classes") \ | |
| 569 \ | |
| 570 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
| 571 "Force exceptions on FP stack under/overflow") \ | |
| 572 \ | |
| 573 develop(bool, SoftMatchFailure, trueInProduct, \ | |
| 574 "If the DFA fails to match a node, print a message and bail out") \ | |
| 575 \ | |
| 576 develop(bool, VerifyStackAtCalls, false, \ | |
| 577 "Verify that the stack pointer is unchanged after calls") \ | |
| 578 \ | |
| 579 develop(bool, TraceJavaAssertions, false, \ | |
| 580 "Trace java language assertions") \ | |
| 581 \ | |
| 582 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
| 583 "temporary - see javaClasses.cpp") \ | |
| 584 \ | |
| 585 notproduct(bool, PrintMallocFree, false, \ | |
| 586 "Trace calls to C heap malloc/free allocation") \ | |
| 587 \ | |
| 588 notproduct(bool, PrintOopAddress, false, \ | |
| 589 "Always print the location of the oop") \ | |
| 590 \ | |
| 591 notproduct(bool, VerifyCodeCacheOften, false, \ | |
| 592 "Verify compiled-code cache often") \ | |
| 593 \ | |
| 594 develop(bool, ZapDeadCompiledLocals, false, \ | |
| 595 "Zap dead locals in compiler frames") \ | |
| 596 \ | |
| 597 notproduct(bool, ZapDeadLocalsOld, false, \ | |
| 598 "Zap dead locals (old version, zaps all frames when " \ | |
| 599 "entering the VM") \ | |
| 600 \ | |
| 601 notproduct(bool, CheckOopishValues, false, \ | |
| 602 "Warn if value contains oop ( requires ZapDeadLocals)") \ | |
| 603 \ | |
| 604 develop(bool, UseMallocOnly, false, \ | |
| 605 "use only malloc/free for allocation (no resource area/arena)") \ | |
| 606 \ | |
| 607 develop(bool, PrintMalloc, false, \ | |
| 608 "print all malloc/free calls") \ | |
| 609 \ | |
| 610 develop(bool, ZapResourceArea, trueInDebug, \ | |
| 611 "Zap freed resource/arena space with 0xABABABAB") \ | |
| 612 \ | |
| 613 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
| 614 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
| 615 \ | |
| 616 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
| 617 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
| 618 \ | |
|
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619 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
| 0 | 620 "Zap unused heap space with 0xBAADBABE") \ |
| 621 \ | |
|
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622 develop(bool, TraceZapUnusedHeapArea, false, \ |
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623 "Trace zapping of unused heap space") \ |
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624 \ |
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625 develop(bool, CheckZapUnusedHeapArea, false, \ |
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626 "Check zapping of unused heap space") \ |
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627 \ |
|
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628 develop(bool, ZapFillerObjects, trueInDebug, \ |
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629 "Zap filler objects with 0xDEAFBABE") \ |
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630 \ |
| 0 | 631 develop(bool, PrintVMMessages, true, \ |
| 632 "Print vm messages on console") \ | |
| 633 \ | |
| 634 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
| 635 "Print the time the application has been running") \ | |
| 636 \ | |
| 637 product(bool, PrintGCApplicationStoppedTime, false, \ | |
| 638 "Print the time the application has been stopped") \ | |
| 639 \ | |
| 640 develop(bool, Verbose, false, \ | |
| 641 "Prints additional debugging information from other modes") \ | |
| 642 \ | |
| 643 develop(bool, PrintMiscellaneous, false, \ | |
| 644 "Prints uncategorized debugging information (requires +Verbose)") \ | |
| 645 \ | |
| 646 develop(bool, WizardMode, false, \ | |
| 647 "Prints much more debugging information") \ | |
| 648 \ | |
| 649 product(bool, ShowMessageBoxOnError, false, \ | |
| 650 "Keep process alive on VM fatal error") \ | |
| 651 \ | |
| 652 product_pd(bool, UseOSErrorReporting, \ | |
| 653 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
| 654 \ | |
| 655 product(bool, SuppressFatalErrorMessage, false, \ | |
| 656 "Do NO Fatal Error report [Avoid deadlock]") \ | |
| 657 \ | |
| 658 product(ccstrlist, OnError, "", \ | |
| 659 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
| 660 "for examples") \ | |
| 661 \ | |
| 662 product(ccstrlist, OnOutOfMemoryError, "", \ | |
| 663 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
| 664 \ | |
| 665 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ | |
| 666 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
| 667 \ | |
| 668 manageable(ccstr, HeapDumpPath, NULL, \ | |
| 669 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
| 670 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
| 671 "in the working directory)") \ | |
| 672 \ | |
| 673 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
| 674 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
| 675 "when the heap usage is larger than this") \ | |
| 676 \ | |
| 677 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
| 678 "Approximate segment size when generating a segmented heap dump") \ | |
| 679 \ | |
| 680 develop(bool, BreakAtWarning, false, \ | |
| 681 "Execute breakpoint upon encountering VM warning") \ | |
| 682 \ | |
| 683 product_pd(bool, UseVectoredExceptions, \ | |
| 684 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
| 685 \ | |
| 686 develop(bool, TraceVMOperation, false, \ | |
| 687 "Trace vm operations") \ | |
| 688 \ | |
| 689 develop(bool, UseFakeTimers, false, \ | |
| 690 "Tells whether the VM should use system time or a fake timer") \ | |
| 691 \ | |
| 692 diagnostic(bool, LogCompilation, false, \ | |
| 693 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
| 694 \ | |
| 695 product(bool, PrintCompilation, false, \ | |
| 696 "Print compilations") \ | |
| 697 \ | |
| 698 diagnostic(bool, TraceNMethodInstalls, false, \ | |
| 699 "Trace nmethod intallation") \ | |
| 700 \ | |
| 701 diagnostic(bool, TraceOSRBreakpoint, false, \ | |
| 702 "Trace OSR Breakpoint ") \ | |
| 703 \ | |
| 704 diagnostic(bool, TraceCompileTriggered, false, \ | |
| 705 "Trace compile triggered") \ | |
| 706 \ | |
| 707 diagnostic(bool, TraceTriggers, false, \ | |
| 708 "Trace triggers") \ | |
| 709 \ | |
| 710 product(bool, AlwaysRestoreFPU, false, \ | |
| 711 "Restore the FPU control word after every JNI call (expensive)") \ | |
| 712 \ | |
| 713 notproduct(bool, PrintCompilation2, false, \ | |
| 714 "Print additional statistics per compilation") \ | |
| 715 \ | |
|
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716 diagnostic(bool, PrintAdapterHandlers, false, \ |
| 0 | 717 "Print code generated for i2c/c2i adapters") \ |
| 718 \ | |
|
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719 diagnostic(bool, PrintAssembly, false, \ |
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720 "Print assembly code (using external disassembler.so)") \ |
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721 \ |
|
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722 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
|
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723 "Options string passed to disassembler.so") \ |
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724 \ |
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725 diagnostic(bool, PrintNMethods, false, \ |
| 0 | 726 "Print assembly code for nmethods when generated") \ |
| 727 \ | |
|
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728 diagnostic(bool, PrintNativeNMethods, false, \ |
| 0 | 729 "Print assembly code for native nmethods when generated") \ |
| 730 \ | |
| 731 develop(bool, PrintDebugInfo, false, \ | |
| 732 "Print debug information for all nmethods when generated") \ | |
| 733 \ | |
| 734 develop(bool, PrintRelocations, false, \ | |
| 735 "Print relocation information for all nmethods when generated") \ | |
| 736 \ | |
| 737 develop(bool, PrintDependencies, false, \ | |
| 738 "Print dependency information for all nmethods when generated") \ | |
| 739 \ | |
| 740 develop(bool, PrintExceptionHandlers, false, \ | |
| 741 "Print exception handler tables for all nmethods when generated") \ | |
| 742 \ | |
| 743 develop(bool, InterceptOSException, false, \ | |
| 744 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
| 745 "exception happens") \ | |
| 746 \ | |
| 747 notproduct(bool, PrintCodeCache, false, \ | |
| 748 "Print the compiled_code cache when exiting") \ | |
| 749 \ | |
| 750 develop(bool, PrintCodeCache2, false, \ | |
| 751 "Print detailed info on the compiled_code cache when exiting") \ | |
| 752 \ | |
|
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753 diagnostic(bool, PrintStubCode, false, \ |
| 0 | 754 "Print generated stub code") \ |
| 755 \ | |
| 756 product(bool, StackTraceInThrowable, true, \ | |
| 757 "Collect backtrace in throwable when exception happens") \ | |
| 758 \ | |
| 759 product(bool, OmitStackTraceInFastThrow, true, \ | |
| 760 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
| 761 \ | |
| 762 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
| 763 "Prints byte code statictics when dumping profiler output") \ | |
| 764 \ | |
| 765 product(bool, ProfilerRecordPC, false, \ | |
| 766 "Collects tick for each 16 byte interval of compiled code") \ | |
| 767 \ | |
| 768 product(bool, ProfileVM, false, \ | |
| 769 "Profiles ticks that fall within VM (either in the VM Thread " \ | |
| 770 "or VM code called through stubs)") \ | |
| 771 \ | |
| 772 product(bool, ProfileIntervals, false, \ | |
| 773 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
| 774 \ | |
| 775 notproduct(bool, ProfilerCheckIntervals, false, \ | |
| 776 "Collect and print info on spacing of profiler ticks") \ | |
| 777 \ | |
| 778 develop(bool, PrintJVMWarnings, false, \ | |
| 779 "Prints warnings for unimplemented JVM functions") \ | |
| 780 \ | |
| 781 notproduct(uintx, WarnOnStalledSpinLock, 0, \ | |
| 782 "Prints warnings for stalled SpinLocks") \ | |
| 783 \ | |
| 784 develop(bool, InitializeJavaLangSystem, true, \ | |
| 785 "Initialize java.lang.System - turn off for individual " \ | |
| 786 "method debugging") \ | |
| 787 \ | |
| 788 develop(bool, InitializeJavaLangString, true, \ | |
| 789 "Initialize java.lang.String - turn off for individual " \ | |
| 790 "method debugging") \ | |
| 791 \ | |
| 792 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
| 793 "Initialize various error and exception classes - turn off for " \ | |
| 794 "individual method debugging") \ | |
| 795 \ | |
| 796 product(bool, RegisterFinalizersAtInit, true, \ | |
| 797 "Register finalizable objects at end of Object.<init> or " \ | |
| 798 "after allocation.") \ | |
| 799 \ | |
| 800 develop(bool, RegisterReferences, true, \ | |
| 801 "Tells whether the VM should register soft/weak/final/phantom " \ | |
| 802 "references") \ | |
| 803 \ | |
| 804 develop(bool, IgnoreRewrites, false, \ | |
| 805 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
| 806 "This is unsafe!") \ | |
| 807 \ | |
| 808 develop(bool, PrintCodeCacheExtension, false, \ | |
| 809 "Print extension of code cache") \ | |
| 810 \ | |
| 811 develop(bool, UsePrivilegedStack, true, \ | |
| 812 "Enable the security JVM functions") \ | |
| 813 \ | |
| 814 develop(bool, IEEEPrecision, true, \ | |
| 815 "Enables IEEE precision (for INTEL only)") \ | |
| 816 \ | |
| 817 develop(bool, ProtectionDomainVerification, true, \ | |
| 818 "Verifies protection domain before resolution in system " \ | |
| 819 "dictionary") \ | |
| 820 \ | |
| 821 product(bool, ClassUnloading, true, \ | |
| 822 "Do unloading of classes") \ | |
| 823 \ | |
|
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824 diagnostic(bool, LinkWellKnownClasses, true, \ |
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825 "Resolve a well known class as soon as its name is seen") \ |
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826 \ |
| 0 | 827 develop(bool, DisableStartThread, false, \ |
| 828 "Disable starting of additional Java threads " \ | |
| 829 "(for debugging only)") \ | |
| 830 \ | |
| 831 develop(bool, MemProfiling, false, \ | |
| 832 "Write memory usage profiling to log file") \ | |
| 833 \ | |
| 834 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
| 835 "Prints the system dictionary at exit") \ | |
| 836 \ | |
| 837 diagnostic(bool, UnsyncloadClass, false, \ | |
| 838 "Unstable: VM calls loadClass unsynchronized. Custom classloader "\ | |
| 839 "must call VM synchronized for findClass & defineClass") \ | |
| 840 \ | |
| 841 product_pd(bool, DontYieldALot, \ | |
| 842 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
| 843 \ | |
| 844 product_pd(bool, ConvertSleepToYield, \ | |
| 845 "Converts sleep(0) to thread yield " \ | |
| 846 "(may be off for SOLARIS to improve GUI)") \ | |
| 847 \ | |
| 848 product(bool, ConvertYieldToSleep, false, \ | |
| 849 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
| 850 "behavior (SOLARIS only)") \ | |
| 851 \ | |
| 852 product(bool, UseBoundThreads, true, \ | |
| 853 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
| 854 \ | |
| 855 develop(bool, UseDetachedThreads, true, \ | |
| 856 "Use detached threads that are recycled upon termination " \ | |
| 857 "(for SOLARIS only)") \ | |
| 858 \ | |
| 859 product(bool, UseLWPSynchronization, true, \ | |
| 860 "Use LWP-based instead of libthread-based synchronization " \ | |
| 861 "(SPARC only)") \ | |
| 862 \ | |
|
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863 product(ccstr, SyncKnobs, NULL, \ |
| 0 | 864 "(Unstable) Various monitor synchronization tunables") \ |
| 865 \ | |
| 866 product(intx, EmitSync, 0, \ | |
| 867 "(Unsafe,Unstable) " \ | |
| 868 " Controls emission of inline sync fast-path code") \ | |
| 869 \ | |
| 870 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ | |
| 871 \ | |
| 872 product(intx, Atomics, 0, \ | |
| 873 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
| 874 \ | |
| 875 product(intx, FenceInstruction, 0, \ | |
| 876 "(Unsafe,Unstable) Experimental") \ | |
| 877 \ | |
| 878 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
| 879 \ | |
| 880 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
| 881 \ | |
| 882 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
| 883 \ | |
| 884 product(intx, hashCode, 0, \ | |
| 885 "(Unstable) select hashCode generation algorithm" ) \ | |
| 886 \ | |
| 887 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
| 888 "(Unstable, Linux-specific)" \ | |
| 889 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
| 890 \ | |
| 891 product(bool, FilterSpuriousWakeups , true, \ | |
| 892 "Prevent spurious or premature wakeups from object.wait" \ | |
| 893 "(Solaris only)") \ | |
| 894 \ | |
| 895 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
| 896 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
| 897 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
| 898 \ | |
| 899 develop(bool, UsePthreads, false, \ | |
| 900 "Use pthread-based instead of libthread-based synchronization " \ | |
| 901 "(SPARC only)") \ | |
| 902 \ | |
| 903 product(bool, AdjustConcurrency, false, \ | |
| 904 "call thr_setconcurrency at thread create time to avoid " \ | |
| 905 "LWP starvation on MP systems (For Solaris Only)") \ | |
| 906 \ | |
| 907 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ | |
| 908 "Should the system attempt to update the compiler file when " \ | |
| 909 "an error occurs?") \ | |
| 910 \ | |
| 911 product(bool, ReduceSignalUsage, false, \ | |
| 912 "Reduce the use of OS signals in Java and/or the VM") \ | |
| 913 \ | |
| 914 notproduct(bool, ValidateMarkSweep, false, \ | |
| 915 "Do extra validation during MarkSweep collection") \ | |
| 916 \ | |
| 917 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
| 918 "Enable GC-to-GC recording and querying of compaction during " \ | |
| 919 "MarkSweep") \ | |
| 920 \ | |
| 921 develop_pd(bool, ShareVtableStubs, \ | |
| 922 "Share vtable stubs (smaller code but worse branch prediction") \ | |
| 923 \ | |
| 924 develop(bool, LoadLineNumberTables, true, \ | |
| 925 "Tells whether the class file parser loads line number tables") \ | |
| 926 \ | |
| 927 develop(bool, LoadLocalVariableTables, true, \ | |
| 928 "Tells whether the class file parser loads local variable tables")\ | |
| 929 \ | |
| 930 develop(bool, LoadLocalVariableTypeTables, true, \ | |
| 931 "Tells whether the class file parser loads local variable type tables")\ | |
| 932 \ | |
| 933 product(bool, AllowUserSignalHandlers, false, \ | |
| 934 "Do not complain if the application installs signal handlers " \ | |
| 935 "(Solaris & Linux only)") \ | |
| 936 \ | |
| 937 product(bool, UseSignalChaining, true, \ | |
| 938 "Use signal-chaining to invoke signal handlers installed " \ | |
| 939 "by the application (Solaris & Linux only)") \ | |
| 940 \ | |
| 941 product(bool, UseAltSigs, false, \ | |
| 942 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
| 943 "internal signals. (Solaris only)") \ | |
| 944 \ | |
| 945 product(bool, UseSpinning, false, \ | |
| 946 "Use spinning in monitor inflation and before entry") \ | |
| 947 \ | |
| 948 product(bool, PreSpinYield, false, \ | |
| 949 "Yield before inner spinning loop") \ | |
| 950 \ | |
| 951 product(bool, PostSpinYield, true, \ | |
| 952 "Yield after inner spinning loop") \ | |
| 953 \ | |
| 954 product(bool, AllowJNIEnvProxy, false, \ | |
| 955 "Allow JNIEnv proxies for jdbx") \ | |
| 956 \ | |
| 957 product(bool, JNIDetachReleasesMonitors, true, \ | |
| 958 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
| 959 \ | |
| 960 product(bool, RestoreMXCSROnJNICalls, false, \ | |
| 961 "Restore MXCSR when returning from JNI calls") \ | |
| 962 \ | |
| 963 product(bool, CheckJNICalls, false, \ | |
| 964 "Verify all arguments to JNI calls") \ | |
| 965 \ | |
| 966 product(bool, UseFastJNIAccessors, true, \ | |
| 967 "Use optimized versions of Get<Primitive>Field") \ | |
| 968 \ | |
| 969 product(bool, EagerXrunInit, false, \ | |
| 970 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
| 971 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
| 972 \ | |
| 973 product(bool, PreserveAllAnnotations, false, \ | |
| 974 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
| 975 \ | |
| 976 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
| 977 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
| 978 \ | |
| 979 product(bool, LazyBootClassLoader, true, \ | |
| 980 "Enable/disable lazy opening of boot class path entries") \ | |
| 981 \ | |
| 982 diagnostic(bool, UseIncDec, true, \ | |
| 983 "Use INC, DEC instructions on x86") \ | |
| 984 \ | |
| 219 | 985 product(bool, UseNewLongLShift, false, \ |
| 986 "Use optimized bitwise shift left") \ | |
| 987 \ | |
| 0 | 988 product(bool, UseStoreImmI16, true, \ |
| 989 "Use store immediate 16-bits value instruction on x86") \ | |
| 990 \ | |
| 991 product(bool, UseAddressNop, false, \ | |
| 992 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
| 993 \ | |
| 994 product(bool, UseXmmLoadAndClearUpper, true, \ | |
| 995 "Load low part of XMM register and clear upper part") \ | |
| 996 \ | |
| 997 product(bool, UseXmmRegToRegMoveAll, false, \ | |
| 998 "Copy all XMM register bits when moving value between registers") \ | |
| 999 \ | |
| 71 | 1000 product(bool, UseXmmI2D, false, \ |
| 1001 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
| 1002 \ | |
| 1003 product(bool, UseXmmI2F, false, \ | |
| 1004 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
| 1005 \ | |
| 405 | 1006 product(bool, UseXMMForArrayCopy, false, \ |
| 1007 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
| 1008 \ | |
| 1009 product(bool, UseUnalignedLoadStores, false, \ | |
| 1010 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
| 1011 \ | |
| 0 | 1012 product(intx, FieldsAllocationStyle, 1, \ |
| 1013 "0 - type based with oops first, 1 - with oops last") \ | |
| 1014 \ | |
| 1015 product(bool, CompactFields, true, \ | |
| 1016 "Allocate nonstatic fields in gaps between previous fields") \ | |
| 1017 \ | |
| 1018 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
| 1019 "Print how many words were saved with CompactFields") \ | |
| 1020 \ | |
| 1021 product(bool, UseBiasedLocking, true, \ | |
| 1022 "Enable biased locking in JVM") \ | |
| 1023 \ | |
| 1024 product(intx, BiasedLockingStartupDelay, 4000, \ | |
| 1025 "Number of milliseconds to wait before enabling biased locking") \ | |
| 1026 \ | |
| 1027 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
| 1028 "Print statistics of biased locking in JVM") \ | |
| 1029 \ | |
| 1030 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
| 1031 "Threshold of number of revocations per type to try to " \ | |
| 1032 "rebias all objects in the heap of that type") \ | |
| 1033 \ | |
| 1034 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
| 1035 "Threshold of number of revocations per type to permanently " \ | |
| 1036 "revoke biases of all objects in the heap of that type") \ | |
| 1037 \ | |
| 1038 product(intx, BiasedLockingDecayTime, 25000, \ | |
| 1039 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
| 1040 "type after previous bulk rebias") \ | |
| 1041 \ | |
| 1042 /* tracing */ \ | |
| 1043 \ | |
| 1044 notproduct(bool, TraceRuntimeCalls, false, \ | |
| 1045 "Trace run-time calls") \ | |
| 1046 \ | |
| 1047 develop(bool, TraceJNICalls, false, \ | |
| 1048 "Trace JNI calls") \ | |
| 1049 \ | |
| 1050 notproduct(bool, TraceJVMCalls, false, \ | |
| 1051 "Trace JVM calls") \ | |
| 1052 \ | |
|
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1053 product(ccstr, TraceJVMTI, NULL, \ |
| 0 | 1054 "Trace flags for JVMTI functions and events") \ |
| 1055 \ | |
| 1056 /* This option can change an EMCP method into an obsolete method. */ \ | |
| 1057 /* This can affect tests that except specific methods to be EMCP. */ \ | |
| 1058 /* This option should be used with caution. */ \ | |
| 1059 product(bool, StressLdcRewrite, false, \ | |
| 1060 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
| 1061 \ | |
| 1062 product(intx, TraceRedefineClasses, 0, \ | |
| 1063 "Trace level for JVMTI RedefineClasses") \ | |
| 1064 \ | |
| 1065 /* change to false by default sometime after Mustang */ \ | |
| 1066 product(bool, VerifyMergedCPBytecodes, true, \ | |
| 1067 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
| 1068 \ | |
| 1069 develop(bool, TraceJNIHandleAllocation, false, \ | |
| 1070 "Trace allocation/deallocation of JNI handle blocks") \ | |
| 1071 \ | |
| 1072 develop(bool, TraceThreadEvents, false, \ | |
| 1073 "Trace all thread events") \ | |
| 1074 \ | |
| 1075 develop(bool, TraceBytecodes, false, \ | |
| 1076 "Trace bytecode execution") \ | |
| 1077 \ | |
| 1078 develop(bool, TraceClassInitialization, false, \ | |
| 1079 "Trace class initialization") \ | |
| 1080 \ | |
| 1081 develop(bool, TraceExceptions, false, \ | |
| 1082 "Trace exceptions") \ | |
| 1083 \ | |
| 1084 develop(bool, TraceICs, false, \ | |
| 1085 "Trace inline cache changes") \ | |
| 1086 \ | |
| 1087 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
| 1088 "Trace method invocation counter overflow") \ | |
| 1089 \ | |
| 1090 develop(bool, TraceInlineCacheClearing, false, \ | |
| 1091 "Trace clearing of inline caches in nmethods") \ | |
| 1092 \ | |
| 1093 develop(bool, TraceDependencies, false, \ | |
| 1094 "Trace dependencies") \ | |
| 1095 \ | |
| 1096 develop(bool, VerifyDependencies, trueInDebug, \ | |
| 1097 "Exercise and verify the compilation dependency mechanism") \ | |
| 1098 \ | |
| 1099 develop(bool, TraceNewOopMapGeneration, false, \ | |
| 1100 "Trace OopMapGeneration") \ | |
| 1101 \ | |
| 1102 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
| 1103 "Trace OopMapGeneration: print detailed cell states") \ | |
| 1104 \ | |
| 1105 develop(bool, TimeOopMap, false, \ | |
| 1106 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
| 1107 \ | |
| 1108 develop(bool, TimeOopMap2, false, \ | |
| 1109 "Time calls to GenerateOopMap::compute_map() individually") \ | |
| 1110 \ | |
| 1111 develop(bool, TraceMonitorMismatch, false, \ | |
| 1112 "Trace monitor matching failures during OopMapGeneration") \ | |
| 1113 \ | |
| 1114 develop(bool, TraceOopMapRewrites, false, \ | |
| 1115 "Trace rewritting of method oops during oop map generation") \ | |
| 1116 \ | |
| 1117 develop(bool, TraceSafepoint, false, \ | |
| 1118 "Trace safepoint operations") \ | |
| 1119 \ | |
| 1120 develop(bool, TraceICBuffer, false, \ | |
| 1121 "Trace usage of IC buffer") \ | |
| 1122 \ | |
| 1123 develop(bool, TraceCompiledIC, false, \ | |
| 1124 "Trace changes of compiled IC") \ | |
| 1125 \ | |
| 1126 notproduct(bool, TraceZapDeadLocals, false, \ | |
| 1127 "Trace zapping dead locals") \ | |
| 1128 \ | |
| 1129 develop(bool, TraceStartupTime, false, \ | |
| 1130 "Trace setup time") \ | |
| 1131 \ | |
| 1132 develop(bool, TraceHPI, false, \ | |
| 1133 "Trace Host Porting Interface (HPI)") \ | |
| 1134 \ | |
| 1135 product(ccstr, HPILibPath, NULL, \ | |
| 1136 "Specify alternate path to HPI library") \ | |
| 1137 \ | |
| 1138 develop(bool, TraceProtectionDomainVerification, false, \ | |
| 1139 "Trace protection domain verifcation") \ | |
| 1140 \ | |
| 1141 develop(bool, TraceClearedExceptions, false, \ | |
| 1142 "Prints when an exception is forcibly cleared") \ | |
| 1143 \ | |
| 1144 product(bool, TraceClassResolution, false, \ | |
| 1145 "Trace all constant pool resolutions (for debugging)") \ | |
| 1146 \ | |
| 1147 product(bool, TraceBiasedLocking, false, \ | |
| 1148 "Trace biased locking in JVM") \ | |
| 1149 \ | |
| 1150 product(bool, TraceMonitorInflation, false, \ | |
| 1151 "Trace monitor inflation in JVM") \ | |
| 1152 \ | |
| 1153 /* assembler */ \ | |
| 1154 product(bool, Use486InstrsOnly, false, \ | |
| 1155 "Use 80486 Compliant instruction subset") \ | |
| 1156 \ | |
| 1157 /* gc */ \ | |
| 1158 \ | |
| 1159 product(bool, UseSerialGC, false, \ | |
|
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1160 "Use the serial garbage collector") \ |
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1161 \ |
|
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1162 experimental(bool, UseG1GC, false, \ |
|
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1163 "Use the Garbage-First garbage collector") \ |
| 0 | 1164 \ |
| 1165 product(bool, UseParallelGC, false, \ | |
| 1166 "Use the Parallel Scavenge garbage collector") \ | |
| 1167 \ | |
| 1168 product(bool, UseParallelOldGC, false, \ | |
| 1169 "Use the Parallel Old garbage collector") \ | |
| 1170 \ | |
| 1171 product(bool, UseParallelOldGCCompacting, true, \ | |
| 1172 "In the Parallel Old garbage collector use parallel compaction") \ | |
| 1173 \ | |
| 1174 product(bool, UseParallelDensePrefixUpdate, true, \ | |
| 1175 "In the Parallel Old garbage collector use parallel dense" \ | |
| 1176 " prefix update") \ | |
| 1177 \ | |
| 1178 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
| 1179 "How often should we maximally compact the heap (not allowing " \ | |
| 1180 "any dead space)") \ | |
| 1181 \ | |
| 1182 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
| 1183 "The collection count for the first maximum compaction") \ | |
| 1184 \ | |
| 1185 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
| 1186 "In the Parallel Old garbage collector maximum compaction for " \ | |
| 1187 "a system GC") \ | |
| 1188 \ | |
| 1189 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
| 1190 "The mean used by the par compact dead wood" \ | |
| 1191 "limiter (a number between 0-100).") \ | |
| 1192 \ | |
| 1193 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
| 1194 "The standard deviation used by the par compact dead wood" \ | |
| 1195 "limiter (a number between 0-100).") \ | |
| 1196 \ | |
| 1197 product(bool, UseParallelOldGCDensePrefix, true, \ | |
| 1198 "Use a dense prefix with the Parallel Old garbage collector") \ | |
| 1199 \ | |
| 1200 product(uintx, ParallelGCThreads, 0, \ | |
| 1201 "Number of parallel threads parallel gc will use") \ | |
| 1202 \ | |
| 1203 product(uintx, ParallelCMSThreads, 0, \ | |
| 1204 "Max number of threads CMS will use for concurrent work") \ | |
| 1205 \ | |
| 1206 develop(bool, ParallelOldMTUnsafeMarkBitMap, false, \ | |
| 1207 "Use the Parallel Old MT unsafe in marking the bitmap") \ | |
| 1208 \ | |
| 1209 develop(bool, ParallelOldMTUnsafeUpdateLiveData, false, \ | |
| 1210 "Use the Parallel Old MT unsafe in update of live size") \ | |
| 1211 \ | |
|
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1212 develop(bool, TraceRegionTasksQueuing, false, \ |
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1213 "Trace the queuing of the region tasks") \ |
| 0 | 1214 \ |
|
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1215 product(uintx, ParallelMarkingThreads, 0, \ |
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1216 "Number of marking threads concurrent gc will use") \ |
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1217 \ |
| 0 | 1218 product(uintx, YoungPLABSize, 4096, \ |
| 1219 "Size of young gen promotion labs (in HeapWords)") \ | |
| 1220 \ | |
| 1221 product(uintx, OldPLABSize, 1024, \ | |
| 1222 "Size of old gen promotion labs (in HeapWords)") \ | |
| 1223 \ | |
| 1224 product(uintx, GCTaskTimeStampEntries, 200, \ | |
| 1225 "Number of time stamp entries per gc worker thread") \ | |
| 1226 \ | |
| 1227 product(bool, AlwaysTenure, false, \ | |
| 1228 "Always tenure objects in eden. (ParallelGC only)") \ | |
| 1229 \ | |
| 1230 product(bool, NeverTenure, false, \ | |
| 1231 "Never tenure objects in eden, May tenure on overflow" \ | |
| 1232 " (ParallelGC only)") \ | |
| 1233 \ | |
| 1234 product(bool, ScavengeBeforeFullGC, true, \ | |
| 1235 "Scavenge youngest generation before each full GC," \ | |
| 1236 " used with UseParallelGC") \ | |
| 1237 \ | |
| 1238 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
| 1239 "Allow scavenges to occur when to_space contains objects.") \ | |
| 1240 \ | |
| 1241 product(bool, UseConcMarkSweepGC, false, \ | |
| 1242 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
| 1243 \ | |
| 1244 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
| 1245 "A System.gc() request invokes a concurrent collection;" \ | |
| 1246 " (effective only when UseConcMarkSweepGC)") \ | |
| 1247 \ | |
| 1248 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
| 1249 "A System.gc() request invokes a concurrent collection and" \ | |
| 1250 " also unloads classes during such a concurrent gc cycle " \ | |
| 1251 " (effective only when UseConcMarkSweepGC)") \ | |
| 1252 \ | |
| 1253 develop(bool, UseCMSAdaptiveFreeLists, true, \ | |
| 1254 "Use Adaptive Free Lists in the CMS generation") \ | |
| 1255 \ | |
| 1256 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
| 1257 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
| 1258 \ | |
| 1259 develop(bool, RotateCMSCollectionTypes, false, \ | |
| 1260 "Rotate the CMS collections among concurrent and STW") \ | |
| 1261 \ | |
| 1262 product(bool, UseCMSBestFit, true, \ | |
| 1263 "Use CMS best fit allocation strategy") \ | |
| 1264 \ | |
| 1265 product(bool, UseCMSCollectionPassing, true, \ | |
| 1266 "Use passing of collection from background to foreground") \ | |
| 1267 \ | |
| 1268 product(bool, UseParNewGC, false, \ | |
| 1269 "Use parallel threads in the new generation.") \ | |
| 1270 \ | |
| 1271 product(bool, ParallelGCVerbose, false, \ | |
| 1272 "Verbose output for parallel GC.") \ | |
| 1273 \ | |
| 1274 product(intx, ParallelGCBufferWastePct, 10, \ | |
| 1275 "wasted fraction of parallel allocation buffer.") \ | |
| 1276 \ | |
| 1277 product(bool, ParallelGCRetainPLAB, true, \ | |
| 1278 "Retain parallel allocation buffers across scavenges.") \ | |
| 1279 \ | |
| 1280 product(intx, TargetPLABWastePct, 10, \ | |
| 1281 "target wasted space in last buffer as pct of overall allocation")\ | |
| 1282 \ | |
| 1283 product(uintx, PLABWeight, 75, \ | |
| 1284 "Percentage (0-100) used to weight the current sample when" \ | |
| 1285 "computing exponentially decaying average for ResizePLAB.") \ | |
| 1286 \ | |
| 1287 product(bool, ResizePLAB, true, \ | |
| 1288 "Dynamically resize (survivor space) promotion labs") \ | |
| 1289 \ | |
| 1290 product(bool, PrintPLAB, false, \ | |
| 1291 "Print (survivor space) promotion labs sizing decisions") \ | |
| 1292 \ | |
| 1293 product(intx, ParGCArrayScanChunk, 50, \ | |
| 1294 "Scan a subset and push remainder, if array is bigger than this") \ | |
| 1295 \ | |
| 1296 product(intx, ParGCDesiredObjsFromOverflowList, 20, \ | |
| 1297 "The desired number of objects to claim from the overflow list") \ | |
| 1298 \ | |
| 1299 product(uintx, CMSParPromoteBlocksToClaim, 50, \ | |
| 1300 "Number of blocks to attempt to claim when refilling CMS LAB for "\ | |
| 1301 "parallel GC.") \ | |
| 1302 \ | |
| 1303 product(bool, AlwaysPreTouch, false, \ | |
| 1304 "It forces all freshly committed pages to be pre-touched.") \ | |
| 1305 \ | |
| 1306 product(bool, CMSUseOldDefaults, false, \ | |
| 1307 "A flag temporarily introduced to allow reverting to some older" \ | |
| 1308 "default settings; older as of 6.0 ") \ | |
| 1309 \ | |
| 1310 product(intx, CMSYoungGenPerWorker, 16*M, \ | |
| 1311 "The amount of young gen chosen by default per GC worker " \ | |
| 1312 "thread available ") \ | |
| 1313 \ | |
|
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1314 product(bool, GCOverheadReporting, false, \ |
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1315 "Enables the GC overhead reporting facility") \ |
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1316 \ |
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1317 product(intx, GCOverheadReportingPeriodMS, 100, \ |
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1318 "Reporting period for conc GC overhead reporting, in ms ") \ |
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1319 \ |
| 0 | 1320 product(bool, CMSIncrementalMode, false, \ |
| 1321 "Whether CMS GC should operate in \"incremental\" mode") \ | |
| 1322 \ | |
| 1323 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
| 1324 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
| 1325 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
| 1326 "value") \ | |
| 1327 \ | |
| 1328 product(bool, CMSIncrementalPacing, true, \ | |
| 1329 "Whether the CMS incremental mode duty cycle should be " \ | |
| 1330 "automatically adjusted") \ | |
| 1331 \ | |
| 1332 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
| 1333 "Lower bound on the duty cycle when CMSIncrementalPacing is" \ | |
| 1334 "enabled (a percentage, 0-100).") \ | |
| 1335 \ | |
| 1336 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
| 1337 "Percentage (0-100) used to add conservatism when computing the" \ | |
| 1338 "duty cycle.") \ | |
| 1339 \ | |
| 1340 product(uintx, CMSIncrementalOffset, 0, \ | |
| 1341 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
| 1342 "is shifted to the right within the period between young GCs") \ | |
| 1343 \ | |
| 1344 product(uintx, CMSExpAvgFactor, 25, \ | |
| 1345 "Percentage (0-100) used to weight the current sample when" \ | |
| 1346 "computing exponential averages for CMS statistics.") \ | |
| 1347 \ | |
| 1348 product(uintx, CMS_FLSWeight, 50, \ | |
| 1349 "Percentage (0-100) used to weight the current sample when" \ | |
| 1350 "computing exponentially decating averages for CMS FLS statistics.") \ | |
| 1351 \ | |
| 1352 product(uintx, CMS_FLSPadding, 2, \ | |
| 1353 "The multiple of deviation from mean to use for buffering" \ | |
| 1354 "against volatility in free list demand.") \ | |
| 1355 \ | |
| 1356 product(uintx, FLSCoalescePolicy, 2, \ | |
| 1357 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
| 1358 \ | |
| 1359 product(uintx, CMS_SweepWeight, 50, \ | |
| 1360 "Percentage (0-100) used to weight the current sample when" \ | |
| 1361 "computing exponentially decaying average for inter-sweep duration.") \ | |
| 1362 \ | |
| 1363 product(uintx, CMS_SweepPadding, 2, \ | |
| 1364 "The multiple of deviation from mean to use for buffering" \ | |
| 1365 "against volatility in inter-sweep duration.") \ | |
| 1366 \ | |
| 1367 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
| 1368 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
| 1369 " duration exceeds this threhold in milliseconds") \ | |
| 1370 \ | |
| 1371 develop(bool, CMSTraceIncrementalMode, false, \ | |
| 1372 "Trace CMS incremental mode") \ | |
| 1373 \ | |
| 1374 develop(bool, CMSTraceIncrementalPacing, false, \ | |
| 1375 "Trace CMS incremental mode pacing computation") \ | |
| 1376 \ | |
| 1377 develop(bool, CMSTraceThreadState, false, \ | |
| 1378 "Trace the CMS thread state (enable the trace_state() method)") \ | |
| 1379 \ | |
| 1380 product(bool, CMSClassUnloadingEnabled, false, \ | |
| 1381 "Whether class unloading enabled when using CMS GC") \ | |
| 1382 \ | |
|
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1383 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
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1384 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
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1385 " for which classes may not be unloaded") \ |
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1386 \ |
| 0 | 1387 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
| 1388 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
| 1389 \ | |
| 1390 product(bool, UseCMSCompactAtFullCollection, true, \ | |
| 1391 "Use mark sweep compact at full collections") \ | |
| 1392 \ | |
| 1393 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
| 1394 "Number of CMS full collection done before compaction if > 0") \ | |
| 1395 \ | |
| 1396 develop(intx, CMSDictionaryChoice, 0, \ | |
| 1397 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
| 1398 \ | |
| 1399 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
| 1400 "Replenish and indexed free list with this number of chunks") \ | |
| 1401 \ | |
| 1402 product(bool, CMSLoopWarn, false, \ | |
| 1403 "Warn in case of excessive CMS looping") \ | |
| 1404 \ | |
| 1405 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
| 1406 "Whether preserved marks should be restored early") \ | |
| 1407 \ | |
| 1408 product(uintx, CMSMarkStackSize, 32*K, \ | |
| 1409 "Size of CMS marking stack") \ | |
| 1410 \ | |
| 1411 product(uintx, CMSMarkStackSizeMax, 4*M, \ | |
| 1412 "Max size of CMS marking stack") \ | |
| 1413 \ | |
| 1414 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
| 1415 "Whether we should simulate frequent marking stack / work queue" \ | |
| 1416 " overflow") \ | |
| 1417 \ | |
| 1418 notproduct(intx, CMSMarkStackOverflowInterval, 1000, \ | |
| 1419 "A per-thread `interval' counter that determines how frequently" \ | |
| 1420 " we simulate overflow; a smaller number increases frequency") \ | |
| 1421 \ | |
| 1422 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
| 1423 "(Temporary, subject to experimentation)" \ | |
| 1424 "Maximum number of abortable preclean iterations, if > 0") \ | |
| 1425 \ | |
| 1426 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
| 1427 "(Temporary, subject to experimentation)" \ | |
| 1428 "Maximum time in abortable preclean in ms") \ | |
| 1429 \ | |
| 1430 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
| 1431 "(Temporary, subject to experimentation)" \ | |
| 1432 "Nominal minimum work per abortable preclean iteration") \ | |
| 1433 \ | |
| 1434 product(intx, CMSAbortablePrecleanWaitMillis, 100, \ | |
| 1435 "(Temporary, subject to experimentation)" \ | |
| 1436 " Time that we sleep between iterations when not given" \ | |
| 1437 " enough work per iteration") \ | |
| 1438 \ | |
| 1439 product(uintx, CMSRescanMultiple, 32, \ | |
| 1440 "Size (in cards) of CMS parallel rescan task") \ | |
| 1441 \ | |
| 1442 product(uintx, CMSConcMarkMultiple, 32, \ | |
| 1443 "Size (in cards) of CMS concurrent MT marking task") \ | |
| 1444 \ | |
| 1445 product(uintx, CMSRevisitStackSize, 1*M, \ | |
| 1446 "Size of CMS KlassKlass revisit stack") \ | |
| 1447 \ | |
| 1448 product(bool, CMSAbortSemantics, false, \ | |
| 1449 "Whether abort-on-overflow semantics is implemented") \ | |
| 1450 \ | |
| 1451 product(bool, CMSParallelRemarkEnabled, true, \ | |
| 1452 "Whether parallel remark enabled (only if ParNewGC)") \ | |
| 1453 \ | |
| 1454 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
| 1455 "Whether parallel remark of survivor space" \ | |
| 1456 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
| 1457 \ | |
| 1458 product(bool, CMSPLABRecordAlways, true, \ | |
| 1459 "Whether to always record survivor space PLAB bdries" \ | |
| 1460 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
| 1461 \ | |
| 1462 product(bool, CMSConcurrentMTEnabled, true, \ | |
| 1463 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
| 1464 \ | |
| 1465 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
| 1466 "Whether concurrent precleaning enabled in perm gen" \ | |
| 1467 " (effective only when CMSPrecleaningEnabled is true)") \ | |
| 1468 \ | |
| 1469 product(bool, CMSPrecleaningEnabled, true, \ | |
| 1470 "Whether concurrent precleaning enabled") \ | |
| 1471 \ | |
| 1472 product(uintx, CMSPrecleanIter, 3, \ | |
| 1473 "Maximum number of precleaning iteration passes") \ | |
| 1474 \ | |
| 1475 product(uintx, CMSPrecleanNumerator, 2, \ | |
| 1476 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
| 1477 " ratio") \ | |
| 1478 \ | |
| 1479 product(uintx, CMSPrecleanDenominator, 3, \ | |
| 1480 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
| 1481 " ratio") \ | |
| 1482 \ | |
|
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1483 product(bool, CMSPrecleanRefLists1, true, \ |
| 0 | 1484 "Preclean ref lists during (initial) preclean phase") \ |
| 1485 \ | |
| 1486 product(bool, CMSPrecleanRefLists2, false, \ | |
| 1487 "Preclean ref lists during abortable preclean phase") \ | |
| 1488 \ | |
| 1489 product(bool, CMSPrecleanSurvivors1, false, \ | |
| 1490 "Preclean survivors during (initial) preclean phase") \ | |
| 1491 \ | |
| 1492 product(bool, CMSPrecleanSurvivors2, true, \ | |
| 1493 "Preclean survivors during abortable preclean phase") \ | |
| 1494 \ | |
| 1495 product(uintx, CMSPrecleanThreshold, 1000, \ | |
| 1496 "Don't re-iterate if #dirty cards less than this") \ | |
| 1497 \ | |
| 1498 product(bool, CMSCleanOnEnter, true, \ | |
| 1499 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
| 1500 \ | |
| 1501 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
| 1502 "Choose variant (1,2) of verification following remark") \ | |
| 1503 \ | |
| 1504 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
| 1505 "If Eden used is below this value, don't try to schedule remark") \ | |
| 1506 \ | |
| 1507 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
| 1508 "The Eden occupancy % at which to try and schedule remark pause") \ | |
| 1509 \ | |
| 1510 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
| 1511 "Start sampling Eden top at least before yg occupancy reaches" \ | |
| 1512 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
| 1513 \ | |
| 1514 product(uintx, CMSSamplingGrain, 16*K, \ | |
| 1515 "The minimum distance between eden samples for CMS (see above)") \ | |
| 1516 \ | |
| 1517 product(bool, CMSScavengeBeforeRemark, false, \ | |
| 1518 "Attempt scavenge before the CMS remark step") \ | |
| 1519 \ | |
| 1520 develop(bool, CMSTraceSweeper, false, \ | |
| 1521 "Trace some actions of the CMS sweeper") \ | |
| 1522 \ | |
| 1523 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
| 1524 "Don't drain below this size per parallel worker/thief") \ | |
| 1525 \ | |
| 1526 product(intx, CMSWaitDuration, 2000, \ | |
| 1527 "Time in milliseconds that CMS thread waits for young GC") \ | |
| 1528 \ | |
| 1529 product(bool, CMSYield, true, \ | |
| 1530 "Yield between steps of concurrent mark & sweep") \ | |
| 1531 \ | |
| 1532 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
| 1533 "Bitmap operations should process at most this many bits" \ | |
| 1534 "between yields") \ | |
| 1535 \ | |
| 1536 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ | |
| 1537 "Verify that all refs across the FLS boundary " \ | |
| 1538 " are to valid objects") \ | |
| 1539 \ | |
| 1540 diagnostic(bool, FLSVerifyLists, false, \ | |
| 1541 "Do lots of (expensive) FreeListSpace verification") \ | |
| 1542 \ | |
| 1543 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
| 1544 "Do lots of (expensive) FLS index table verification") \ | |
| 1545 \ | |
| 1546 develop(bool, FLSVerifyDictionary, false, \ | |
| 1547 "Do lots of (expensive) FLS dictionary verification") \ | |
| 1548 \ | |
| 1549 develop(bool, VerifyBlockOffsetArray, false, \ | |
| 1550 "Do (expensive!) block offset array verification") \ | |
| 1551 \ | |
| 1552 product(bool, BlockOffsetArrayUseUnallocatedBlock, trueInDebug, \ | |
| 1553 "Maintain _unallocated_block in BlockOffsetArray" \ | |
| 1554 " (currently applicable only to CMS collector)") \ | |
| 1555 \ | |
| 1556 develop(bool, TraceCMSState, false, \ | |
| 1557 "Trace the state of the CMS collection") \ | |
| 1558 \ | |
| 1559 product(intx, RefDiscoveryPolicy, 0, \ | |
| 1560 "Whether reference-based(0) or referent-based(1)") \ | |
| 1561 \ | |
| 1562 product(bool, ParallelRefProcEnabled, false, \ | |
| 1563 "Enable parallel reference processing whenever possible") \ | |
| 1564 \ | |
| 1565 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
| 1566 "Enable balancing of reference processing queues") \ | |
| 1567 \ | |
| 1568 product(intx, CMSTriggerRatio, 80, \ | |
| 1569 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
| 1570 " allocated before a CMS collection cycle commences") \ | |
| 1571 \ | |
|
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1572 product(intx, CMSTriggerPermRatio, 80, \ |
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1573 "Percentage of MinHeapFreeRatio in the CMS perm generation that" \ |
|
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1574 " is allocated before a CMS collection cycle commences, that " \ |
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1575 " also collects the perm generation") \ |
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1576 \ |
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1577 product(uintx, CMSBootstrapOccupancy, 50, \ |
| 0 | 1578 "Percentage CMS generation occupancy at which to " \ |
| 1579 " initiate CMS collection for bootstrapping collection stats") \ | |
| 1580 \ | |
| 1581 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
| 1582 "Percentage CMS generation occupancy to start a CMS collection " \ | |
|
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1583 " cycle (A negative value means that CMSTriggerRatio is used)") \ |
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1584 \ |
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1585 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
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1586 "Percentage CMS perm generation occupancy to start a CMScollection"\ |
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1587 " cycle (A negative value means that CMSTriggerPermRatio is used)")\ |
| 0 | 1588 \ |
| 1589 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
| 1590 "Only use occupancy as a crierion for starting a CMS collection") \ | |
| 1591 \ | |
|
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1592 product(intx, CMSIsTooFullPercentage, 98, \ |
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1593 "An absolute ceiling above which CMS will always consider the" \ |
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1594 " perm gen ripe for collection") \ |
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1595 \ |
| 0 | 1596 develop(bool, CMSTestInFreeList, false, \ |
| 1597 "Check if the coalesced range is already in the " \ | |
| 1598 "free lists as claimed.") \ | |
| 1599 \ | |
| 1600 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
| 1601 "Check that all the garbage collected was returned to the " \ | |
| 1602 "free lists.") \ | |
| 1603 \ | |
| 1604 notproduct(bool, ScavengeALot, false, \ | |
| 1605 "Force scavenge at every Nth exit from the runtime system " \ | |
| 1606 "(N=ScavengeALotInterval)") \ | |
| 1607 \ | |
| 1608 develop(bool, FullGCALot, false, \ | |
| 1609 "Force full gc at every Nth exit from the runtime system " \ | |
| 1610 "(N=FullGCALotInterval)") \ | |
| 1611 \ | |
| 1612 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
| 1613 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
| 1614 \ | |
| 1615 product(bool, HandlePromotionFailure, true, \ | |
| 1616 "The youngest generation collection does not require" \ | |
| 1617 " a guarantee of full promotion of all live objects.") \ | |
| 1618 \ | |
| 1619 notproduct(bool, PromotionFailureALot, false, \ | |
| 1620 "Use promotion failure handling on every youngest generation " \ | |
| 1621 "collection") \ | |
| 1622 \ | |
| 1623 develop(uintx, PromotionFailureALotCount, 1000, \ | |
| 1624 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
| 1625 "refill attempts (ParNew) or promotion attempts " \ | |
| 1626 "(other young collectors) ") \ | |
| 1627 \ | |
| 1628 develop(uintx, PromotionFailureALotInterval, 5, \ | |
| 1629 "Total collections between promotion failures alot") \ | |
| 1630 \ | |
| 1631 develop(intx, WorkStealingSleepMillis, 1, \ | |
| 1632 "Sleep time when sleep is used for yields") \ | |
| 1633 \ | |
| 1634 develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \ | |
| 1635 "Number of yields before a sleep is done during workstealing") \ | |
| 1636 \ | |
| 1637 product(uintx, PreserveMarkStackSize, 40, \ | |
| 1638 "Size for stack used in promotion failure handling") \ | |
| 1639 \ | |
| 1640 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ | |
| 1641 \ | |
| 1642 product_pd(bool, ResizeTLAB, \ | |
| 1643 "Dynamically resize tlab size for threads") \ | |
| 1644 \ | |
| 1645 product(bool, ZeroTLAB, false, \ | |
| 1646 "Zero out the newly created TLAB") \ | |
| 1647 \ | |
|
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1648 product(bool, FastTLABRefill, true, \ |
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1649 "Use fast TLAB refill code") \ |
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1650 \ |
| 0 | 1651 product(bool, PrintTLAB, false, \ |
| 1652 "Print various TLAB related information") \ | |
| 1653 \ | |
| 1654 product(bool, TLABStats, true, \ | |
| 1655 "Print various TLAB related information") \ | |
| 1656 \ | |
| 1657 product_pd(bool, NeverActAsServerClassMachine, \ | |
| 1658 "Never act like a server-class machine") \ | |
| 1659 \ | |
| 1660 product(bool, AlwaysActAsServerClassMachine, false, \ | |
| 1661 "Always act like a server-class machine") \ | |
| 1662 \ | |
| 1663 product_pd(uintx, DefaultMaxRAM, \ | |
| 1664 "Maximum real memory size for setting server class heap size") \ | |
| 1665 \ | |
| 1666 product(uintx, DefaultMaxRAMFraction, 4, \ | |
| 1667 "Fraction (1/n) of real memory used for server class max heap") \ | |
| 1668 \ | |
| 1669 product(uintx, DefaultInitialRAMFraction, 64, \ | |
| 1670 "Fraction (1/n) of real memory used for server class initial heap") \ | |
| 1671 \ | |
| 1672 product(bool, UseAutoGCSelectPolicy, false, \ | |
| 1673 "Use automatic collection selection policy") \ | |
| 1674 \ | |
| 1675 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
| 1676 "Automatic GC selection pause threshhold in ms") \ | |
| 1677 \ | |
| 1678 product(bool, UseAdaptiveSizePolicy, true, \ | |
| 1679 "Use adaptive generation sizing policies") \ | |
| 1680 \ | |
| 1681 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
| 1682 "Use adaptive survivor sizing policies") \ | |
| 1683 \ | |
| 1684 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
| 1685 "Use adaptive young-old sizing policies at minor collections") \ | |
| 1686 \ | |
| 1687 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
| 1688 "Use adaptive young-old sizing policies at major collections") \ | |
| 1689 \ | |
| 1690 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
| 1691 "Use statistics from System.GC for adaptive size policy") \ | |
| 1692 \ | |
| 1693 product(bool, UseAdaptiveGCBoundary, false, \ | |
| 1694 "Allow young-old boundary to move") \ | |
| 1695 \ | |
| 1696 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
| 1697 "Trace young-old boundary moves") \ | |
| 1698 \ | |
| 1699 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
| 1700 "Resize the virtual spaces of the young or old generations") \ | |
| 1701 \ | |
| 1702 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
| 1703 "Policy for changeing generation size for throughput goals") \ | |
| 1704 \ | |
| 1705 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
| 1706 "Policy for changing generation size for pause goals") \ | |
| 1707 \ | |
| 1708 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
| 1709 "Adjust tenured generation to achive a minor pause goal") \ | |
| 1710 \ | |
| 1711 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
| 1712 "Adjust young generation to achive a major pause goal") \ | |
| 1713 \ | |
| 1714 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
| 1715 "Number of steps where heuristics is used before data is used") \ | |
| 1716 \ | |
| 1717 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
| 1718 "Number of collections before the adaptive sizing is started") \ | |
| 1719 \ | |
| 1720 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
| 1721 "Collecton interval for printing information, zero => never") \ | |
| 1722 \ | |
| 1723 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
| 1724 "Use adaptive minimum footprint as a goal") \ | |
| 1725 \ | |
| 1726 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
| 1727 "Weight given to exponential resizing, between 0 and 100") \ | |
| 1728 \ | |
| 1729 product(uintx, AdaptiveTimeWeight, 25, \ | |
| 1730 "Weight given to time in adaptive policy, between 0 and 100") \ | |
| 1731 \ | |
| 1732 product(uintx, PausePadding, 1, \ | |
| 1733 "How much buffer to keep for pause time") \ | |
| 1734 \ | |
| 1735 product(uintx, PromotedPadding, 3, \ | |
| 1736 "How much buffer to keep for promotion failure") \ | |
| 1737 \ | |
| 1738 product(uintx, SurvivorPadding, 3, \ | |
| 1739 "How much buffer to keep for survivor overflow") \ | |
| 1740 \ | |
| 1741 product(uintx, AdaptivePermSizeWeight, 20, \ | |
| 1742 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
| 1743 \ | |
| 1744 product(uintx, PermGenPadding, 3, \ | |
| 1745 "How much buffer to keep for perm gen sizing") \ | |
| 1746 \ | |
| 1747 product(uintx, ThresholdTolerance, 10, \ | |
| 1748 "Allowed collection cost difference between generations") \ | |
| 1749 \ | |
| 1750 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
| 1751 "If collection costs are within margin, reduce both by full delta") \ | |
| 1752 \ | |
| 1753 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
| 1754 "Adaptive size percentage change in young generation") \ | |
| 1755 \ | |
| 1756 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
| 1757 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
| 1758 \ | |
| 1759 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
| 1760 "Decay factor to YoungedGenerationSizeSupplement") \ | |
| 1761 \ | |
| 1762 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
| 1763 "Adaptive size percentage change in tenured generation") \ | |
| 1764 \ | |
| 1765 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
| 1766 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
| 1767 \ | |
| 1768 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
| 1769 "Decay factor to TenuredGenerationSizeIncrement") \ | |
| 1770 \ | |
| 1771 product(uintx, MaxGCPauseMillis, max_uintx, \ | |
| 1772 "Adaptive size policy maximum GC pause time goal in msec") \ | |
| 1773 \ | |
| 1774 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
| 1775 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
| 1776 \ | |
| 1777 product(uintx, GCTimeRatio, 99, \ | |
| 1778 "Adaptive size policy application time to GC time ratio") \ | |
| 1779 \ | |
| 1780 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
| 1781 "Adaptive size scale down factor for shrinking") \ | |
| 1782 \ | |
| 1783 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
| 1784 "Adaptive size decays the major cost for long major intervals") \ | |
| 1785 \ | |
| 1786 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
| 1787 "Time scale over which major costs decay") \ | |
| 1788 \ | |
| 1789 product(uintx, MinSurvivorRatio, 3, \ | |
| 1790 "Minimum ratio of young generation/survivor space size") \ | |
| 1791 \ | |
| 1792 product(uintx, InitialSurvivorRatio, 8, \ | |
| 1793 "Initial ratio of eden/survivor space size") \ | |
| 1794 \ | |
| 1795 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
| 1796 "Estimate of footprint other than Java Heap") \ | |
| 1797 \ | |
| 1798 product(bool, UseGCOverheadLimit, true, \ | |
| 1799 "Use policy to limit of proportion of time spent in GC " \ | |
| 1800 "before an OutOfMemory error is thrown") \ | |
| 1801 \ | |
| 1802 product(uintx, GCTimeLimit, 98, \ | |
| 1803 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
| 1804 "error is thrown (used with GCHeapFreeLimit)") \ | |
| 1805 \ | |
| 1806 product(uintx, GCHeapFreeLimit, 2, \ | |
| 1807 "Minimum percentage of free space after a full GC before an " \ | |
| 1808 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
| 1809 \ | |
| 1810 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
| 1811 "Number of consecutive collections before gc time limit fires") \ | |
| 1812 \ | |
| 1813 product(bool, PrintAdaptiveSizePolicy, false, \ | |
| 1814 "Print information about AdaptiveSizePolicy") \ | |
| 1815 \ | |
| 1816 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
| 1817 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
| 1818 \ | |
| 1819 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
| 1820 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
| 1821 \ | |
| 1822 product(intx, PrefetchFieldsAhead, -1, \ | |
| 1823 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
| 1824 \ | |
| 1825 develop(bool, UsePrefetchQueue, true, \ | |
| 1826 "Use the prefetch queue during PS promotion") \ | |
| 1827 \ | |
| 1828 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
| 1829 "Verify system before exiting") \ | |
| 1830 \ | |
| 1831 diagnostic(bool, VerifyBeforeGC, false, \ | |
| 1832 "Verify memory system before GC") \ | |
| 1833 \ | |
| 1834 diagnostic(bool, VerifyAfterGC, false, \ | |
| 1835 "Verify memory system after GC") \ | |
| 1836 \ | |
| 1837 diagnostic(bool, VerifyDuringGC, false, \ | |
| 1838 "Verify memory system during GC (between phases)") \ | |
| 1839 \ | |
| 390 | 1840 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
| 1841 "Enable parallel memory system verification") \ | |
| 1842 \ | |
| 0 | 1843 diagnostic(bool, VerifyRememberedSets, false, \ |
| 1844 "Verify GC remembered sets") \ | |
| 1845 \ | |
| 1846 diagnostic(bool, VerifyObjectStartArray, true, \ | |
| 1847 "Verify GC object start array if verify before/after") \ | |
| 1848 \ | |
| 1849 product(bool, DisableExplicitGC, false, \ | |
| 1850 "Tells whether calling System.gc() does a full GC") \ | |
| 1851 \ | |
| 1852 notproduct(bool, CheckMemoryInitialization, false, \ | |
| 1853 "Checks memory initialization") \ | |
| 1854 \ | |
| 1855 product(bool, CollectGen0First, false, \ | |
| 1856 "Collect youngest generation before each full GC") \ | |
| 1857 \ | |
| 1858 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
| 1859 "Bind CMS Thread to CPU if possible") \ | |
| 1860 \ | |
| 1861 diagnostic(uintx, CPUForCMSThread, 0, \ | |
| 1862 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
| 1863 \ | |
| 1864 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
| 1865 "Bind GCTaskThreads to CPUs if possible") \ | |
| 1866 \ | |
| 1867 product(bool, UseGCTaskAffinity, false, \ | |
| 1868 "Use worker affinity when asking for GCTasks") \ | |
| 1869 \ | |
| 1870 product(uintx, ProcessDistributionStride, 4, \ | |
| 1871 "Stride through processors when distributing processes") \ | |
| 1872 \ | |
| 1873 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
| 1874 "number of times the coordinator GC thread will sleep while " \ | |
| 1875 "yielding before giving up and resuming GC") \ | |
| 1876 \ | |
| 1877 product(uintx, CMSYieldSleepCount, 0, \ | |
| 1878 "number of times a GC thread (minus the coordinator) " \ | |
| 1879 "will sleep while yielding before giving up and resuming GC") \ | |
| 1880 \ | |
|
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1881 notproduct(bool, PrintFlagsFinal, false, \ |
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1882 "Print all command line flags after argument processing") \ |
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1883 \ |
| 0 | 1884 /* gc tracing */ \ |
| 1885 manageable(bool, PrintGC, false, \ | |
| 1886 "Print message at garbage collect") \ | |
| 1887 \ | |
| 1888 manageable(bool, PrintGCDetails, false, \ | |
| 1889 "Print more details at garbage collect") \ | |
| 1890 \ | |
| 1891 manageable(bool, PrintGCDateStamps, false, \ | |
| 1892 "Print date stamps at garbage collect") \ | |
| 1893 \ | |
| 1894 manageable(bool, PrintGCTimeStamps, false, \ | |
| 1895 "Print timestamps at garbage collect") \ | |
| 1896 \ | |
| 1897 product(bool, PrintGCTaskTimeStamps, false, \ | |
| 1898 "Print timestamps for individual gc worker thread tasks") \ | |
| 1899 \ | |
| 1900 develop(intx, ConcGCYieldTimeout, 0, \ | |
| 1901 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
| 1902 \ | |
| 1903 notproduct(bool, TraceMarkSweep, false, \ | |
| 1904 "Trace mark sweep") \ | |
| 1905 \ | |
| 1906 product(bool, PrintReferenceGC, false, \ | |
| 1907 "Print times spent handling reference objects during GC " \ | |
| 1908 " (enabled only when PrintGCDetails)") \ | |
| 1909 \ | |
| 1910 develop(bool, TraceReferenceGC, false, \ | |
| 1911 "Trace handling of soft/weak/final/phantom references") \ | |
| 1912 \ | |
| 1913 develop(bool, TraceFinalizerRegistration, false, \ | |
| 1914 "Trace registration of final references") \ | |
| 1915 \ | |
| 1916 notproduct(bool, TraceScavenge, false, \ | |
| 1917 "Trace scavenge") \ | |
| 1918 \ | |
| 1919 product_rw(bool, TraceClassLoading, false, \ | |
| 1920 "Trace all classes loaded") \ | |
| 1921 \ | |
| 1922 product(bool, TraceClassLoadingPreorder, false, \ | |
| 1923 "Trace all classes loaded in order referenced (not loaded)") \ | |
| 1924 \ | |
| 1925 product_rw(bool, TraceClassUnloading, false, \ | |
| 1926 "Trace unloading of classes") \ | |
| 1927 \ | |
| 1928 product_rw(bool, TraceLoaderConstraints, false, \ | |
| 1929 "Trace loader constraints") \ | |
| 1930 \ | |
| 1931 product(bool, TraceGen0Time, false, \ | |
| 1932 "Trace accumulated time for Gen 0 collection") \ | |
| 1933 \ | |
| 1934 product(bool, TraceGen1Time, false, \ | |
| 1935 "Trace accumulated time for Gen 1 collection") \ | |
| 1936 \ | |
| 1937 product(bool, PrintTenuringDistribution, false, \ | |
| 1938 "Print tenuring age information") \ | |
| 1939 \ | |
| 1940 product_rw(bool, PrintHeapAtGC, false, \ | |
| 1941 "Print heap layout before and after each GC") \ | |
| 1942 \ | |
| 1943 product(bool, PrintHeapAtSIGBREAK, true, \ | |
| 1944 "Print heap layout in response to SIGBREAK") \ | |
| 1945 \ | |
| 1946 manageable(bool, PrintClassHistogram, false, \ | |
| 1947 "Print a histogram of class instances") \ | |
| 1948 \ | |
| 1949 develop(bool, TraceWorkGang, false, \ | |
| 1950 "Trace activities of work gangs") \ | |
| 1951 \ | |
| 1952 product(bool, TraceParallelOldGCTasks, false, \ | |
| 1953 "Trace multithreaded GC activity") \ | |
| 1954 \ | |
| 1955 develop(bool, TraceBlockOffsetTable, false, \ | |
| 1956 "Print BlockOffsetTable maps") \ | |
| 1957 \ | |
| 1958 develop(bool, TraceCardTableModRefBS, false, \ | |
| 1959 "Print CardTableModRefBS maps") \ | |
| 1960 \ | |
| 1961 develop(bool, TraceGCTaskManager, false, \ | |
| 1962 "Trace actions of the GC task manager") \ | |
| 1963 \ | |
| 1964 develop(bool, TraceGCTaskQueue, false, \ | |
| 1965 "Trace actions of the GC task queues") \ | |
| 1966 \ | |
| 1967 develop(bool, TraceGCTaskThread, false, \ | |
| 1968 "Trace actions of the GC task threads") \ | |
| 1969 \ | |
| 1970 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
| 1971 "Print the time taken by each parallel old gc phase." \ | |
| 1972 "PrintGCDetails must also be enabled.") \ | |
| 1973 \ | |
| 1974 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
| 1975 "Trace parallel old gc marking phase") \ | |
| 1976 \ | |
| 1977 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
| 1978 "Trace parallel old gc summary phase") \ | |
| 1979 \ | |
| 1980 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
| 1981 "Trace parallel old gc compaction phase") \ | |
| 1982 \ | |
| 1983 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
| 1984 "Trace parallel old gc dense prefix computation") \ | |
| 1985 \ | |
| 1986 develop(bool, IgnoreLibthreadGPFault, false, \ | |
| 1987 "Suppress workaround for libthread GP fault") \ | |
| 1988 \ | |
|
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1989 product(bool, PrintJNIGCStalls, false, \ |
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1990 "Print diagnostic message when GC is stalled" \ |
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1991 "by JNI critical section") \ |
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1992 \ |
| 0 | 1993 /* JVMTI heap profiling */ \ |
| 1994 \ | |
| 1995 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
| 1996 "Trace JVMTI object tagging calls") \ | |
| 1997 \ | |
| 1998 diagnostic(bool, VerifyBeforeIteration, false, \ | |
| 1999 "Verify memory system before JVMTI iteration") \ | |
| 2000 \ | |
| 2001 /* compiler interface */ \ | |
| 2002 \ | |
| 2003 develop(bool, CIPrintCompilerName, false, \ | |
| 2004 "when CIPrint is active, print the name of the active compiler") \ | |
| 2005 \ | |
| 2006 develop(bool, CIPrintCompileQueue, false, \ | |
| 2007 "display the contents of the compile queue whenever a " \ | |
| 2008 "compilation is enqueued") \ | |
| 2009 \ | |
| 2010 develop(bool, CIPrintRequests, false, \ | |
| 2011 "display every request for compilation") \ | |
| 2012 \ | |
| 2013 product(bool, CITime, false, \ | |
| 2014 "collect timing information for compilation") \ | |
| 2015 \ | |
| 2016 develop(bool, CITimeEach, false, \ | |
| 2017 "display timing information after each successful compilation") \ | |
| 2018 \ | |
| 2019 develop(bool, CICountOSR, true, \ | |
| 2020 "use a separate counter when assigning ids to osr compilations") \ | |
| 2021 \ | |
| 2022 develop(bool, CICompileNatives, true, \ | |
| 2023 "compile native methods if supported by the compiler") \ | |
| 2024 \ | |
| 2025 develop_pd(bool, CICompileOSR, \ | |
| 2026 "compile on stack replacement methods if supported by the " \ | |
| 2027 "compiler") \ | |
| 2028 \ | |
| 2029 develop(bool, CIPrintMethodCodes, false, \ | |
| 2030 "print method bytecodes of the compiled code") \ | |
| 2031 \ | |
| 2032 develop(bool, CIPrintTypeFlow, false, \ | |
| 2033 "print the results of ciTypeFlow analysis") \ | |
| 2034 \ | |
| 2035 develop(bool, CITraceTypeFlow, false, \ | |
| 2036 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
| 2037 \ | |
| 2038 develop(intx, CICloneLoopTestLimit, 100, \ | |
| 2039 "size limit for blocks heuristically cloned in ciTypeFlow") \ | |
| 2040 \ | |
| 2041 /* temp diagnostics */ \ | |
| 2042 \ | |
| 2043 diagnostic(bool, TraceRedundantCompiles, false, \ | |
| 2044 "Have compile broker print when a request already in the queue is"\ | |
| 2045 " requested again") \ | |
| 2046 \ | |
| 2047 diagnostic(bool, InitialCompileFast, false, \ | |
| 2048 "Initial compile at CompLevel_fast_compile") \ | |
| 2049 \ | |
| 2050 diagnostic(bool, InitialCompileReallyFast, false, \ | |
| 2051 "Initial compile at CompLevel_really_fast_compile (no profile)") \ | |
| 2052 \ | |
| 2053 diagnostic(bool, FullProfileOnReInterpret, true, \ | |
| 2054 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ | |
| 2055 \ | |
| 2056 /* compiler */ \ | |
| 2057 \ | |
| 2058 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
| 2059 "Number of compiler threads to run") \ | |
| 2060 \ | |
| 2061 product(intx, CompilationPolicyChoice, 0, \ | |
| 2062 "which compilation policy (0/1)") \ | |
| 2063 \ | |
| 2064 develop(bool, UseStackBanging, true, \ | |
| 2065 "use stack banging for stack overflow checks (required for " \ | |
| 2066 "proper StackOverflow handling; disable only to measure cost " \ | |
| 2067 "of stackbanging)") \ | |
| 2068 \ | |
| 2069 develop(bool, Use24BitFPMode, true, \ | |
| 2070 "Set 24-bit FPU mode on a per-compile basis ") \ | |
| 2071 \ | |
| 2072 develop(bool, Use24BitFP, true, \ | |
| 2073 "use FP instructions that produce 24-bit precise results") \ | |
| 2074 \ | |
| 2075 develop(bool, UseStrictFP, true, \ | |
| 2076 "use strict fp if modifier strictfp is set") \ | |
| 2077 \ | |
| 2078 develop(bool, GenerateSynchronizationCode, true, \ | |
| 2079 "generate locking/unlocking code for synchronized methods and " \ | |
| 2080 "monitors") \ | |
| 2081 \ | |
| 2082 develop(bool, GenerateCompilerNullChecks, true, \ | |
| 2083 "Generate explicit null checks for loads/stores/calls") \ | |
| 2084 \ | |
| 2085 develop(bool, GenerateRangeChecks, true, \ | |
| 2086 "Generate range checks for array accesses") \ | |
| 2087 \ | |
| 2088 develop_pd(bool, ImplicitNullChecks, \ | |
| 2089 "generate code for implicit null checks") \ | |
| 2090 \ | |
| 2091 product(bool, PrintSafepointStatistics, false, \ | |
| 2092 "print statistics about safepoint synchronization") \ | |
| 2093 \ | |
| 2094 product(intx, PrintSafepointStatisticsCount, 300, \ | |
| 2095 "total number of safepoint statistics collected " \ | |
| 2096 "before printing them out") \ | |
| 2097 \ | |
| 2098 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
| 2099 "print safepoint statistics only when safepoint takes" \ | |
| 2100 " more than PrintSafepointSatisticsTimeout in millis") \ | |
| 2101 \ | |
| 2102 develop(bool, InlineAccessors, true, \ | |
| 2103 "inline accessor methods (get/set)") \ | |
| 2104 \ | |
| 2105 product(bool, Inline, true, \ | |
| 2106 "enable inlining") \ | |
| 2107 \ | |
| 2108 product(bool, ClipInlining, true, \ | |
| 2109 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
| 2110 \ | |
| 2111 develop(bool, UseCHA, true, \ | |
| 2112 "enable CHA") \ | |
| 2113 \ | |
| 2114 product(bool, UseTypeProfile, true, \ | |
| 2115 "Check interpreter profile for historically monomorphic calls") \ | |
| 2116 \ | |
| 2117 product(intx, TypeProfileMajorReceiverPercent, 90, \ | |
| 2118 "% of major receiver type to all profiled receivers") \ | |
| 2119 \ | |
| 2120 notproduct(bool, TimeCompiler, false, \ | |
| 2121 "time the compiler") \ | |
| 2122 \ | |
| 2123 notproduct(bool, TimeCompiler2, false, \ | |
| 2124 "detailed time the compiler (requires +TimeCompiler)") \ | |
| 2125 \ | |
| 2126 diagnostic(bool, PrintInlining, false, \ | |
| 2127 "prints inlining optimizations") \ | |
| 2128 \ | |
| 2129 diagnostic(bool, PrintIntrinsics, false, \ | |
| 2130 "prints attempted and successful inlining of intrinsics") \ | |
| 2131 \ | |
| 2132 diagnostic(ccstrlist, DisableIntrinsic, "", \ | |
| 2133 "do not expand intrinsics whose (internal) names appear here") \ | |
| 2134 \ | |
| 2135 develop(bool, StressReflectiveCode, false, \ | |
| 2136 "Use inexact types at allocations, etc., to test reflection") \ | |
| 2137 \ | |
| 2138 develop(bool, EagerInitialization, false, \ | |
| 2139 "Eagerly initialize classes if possible") \ | |
| 2140 \ | |
| 2141 product(bool, Tier1UpdateMethodData, trueInTiered, \ | |
| 2142 "Update methodDataOops in Tier1-generated code") \ | |
| 2143 \ | |
| 2144 develop(bool, TraceMethodReplacement, false, \ | |
| 2145 "Print when methods are replaced do to recompilation") \ | |
| 2146 \ | |
| 2147 develop(bool, PrintMethodFlushing, false, \ | |
| 2148 "print the nmethods being flushed") \ | |
| 2149 \ | |
| 2150 notproduct(bool, LogMultipleMutexLocking, false, \ | |
| 2151 "log locking and unlocking of mutexes (only if multiple locks " \ | |
| 2152 "are held)") \ | |
| 2153 \ | |
| 2154 develop(bool, UseRelocIndex, false, \ | |
| 2155 "use an index to speed random access to relocations") \ | |
| 2156 \ | |
| 2157 develop(bool, StressCodeBuffers, false, \ | |
| 2158 "Exercise code buffer expansion and other rare state changes") \ | |
| 2159 \ | |
| 2160 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
| 2161 "Generate extra debugging info for non-safepoints in nmethods") \ | |
| 2162 \ | |
| 2163 diagnostic(bool, DebugInlinedCalls, true, \ | |
| 2164 "If false, restricts profiled locations to the root method only") \ | |
| 2165 \ | |
| 2166 product(bool, PrintVMOptions, trueInDebug, \ | |
| 2167 "print VM flag settings") \ | |
| 2168 \ | |
| 2169 diagnostic(bool, SerializeVMOutput, true, \ | |
| 2170 "Use a mutex to serialize output to tty and hotspot.log") \ | |
| 2171 \ | |
| 2172 diagnostic(bool, DisplayVMOutput, true, \ | |
| 2173 "Display all VM output on the tty, independently of LogVMOutput") \ | |
| 2174 \ | |
| 2175 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
| 2176 "Save VM output to hotspot.log, or to LogFile") \ | |
| 2177 \ | |
| 2178 diagnostic(ccstr, LogFile, NULL, \ | |
| 2179 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
| 2180 \ | |
| 2181 product(ccstr, ErrorFile, NULL, \ | |
| 2182 "If an error occurs, save the error data to this file " \ | |
| 2183 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
| 2184 \ | |
| 2185 product(bool, DisplayVMOutputToStderr, false, \ | |
| 2186 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
| 2187 \ | |
| 2188 product(bool, DisplayVMOutputToStdout, false, \ | |
| 2189 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
| 2190 \ | |
| 2191 product(bool, UseHeavyMonitors, false, \ | |
| 2192 "use heavyweight instead of lightweight Java monitors") \ | |
| 2193 \ | |
| 2194 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ | |
| 2195 "print histogram of the symbol table") \ | |
| 2196 \ | |
| 2197 notproduct(bool, ExitVMOnVerifyError, false, \ | |
| 2198 "standard exit from VM if bytecode verify error " \ | |
| 2199 "(only in debug mode)") \ | |
| 2200 \ | |
| 2201 notproduct(ccstr, AbortVMOnException, NULL, \ | |
| 2202 "Call fatal if this exception is thrown. Example: " \ | |
| 2203 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
| 2204 \ | |
| 2205 develop(bool, DebugVtables, false, \ | |
| 2206 "add debugging code to vtable dispatch") \ | |
| 2207 \ | |
| 2208 develop(bool, PrintVtables, false, \ | |
| 2209 "print vtables when printing klass") \ | |
| 2210 \ | |
| 2211 notproduct(bool, PrintVtableStats, false, \ | |
| 2212 "print vtables stats at end of run") \ | |
| 2213 \ | |
| 2214 develop(bool, TraceCreateZombies, false, \ | |
| 2215 "trace creation of zombie nmethods") \ | |
| 2216 \ | |
| 2217 notproduct(bool, IgnoreLockingAssertions, false, \ | |
| 2218 "disable locking assertions (for speed)") \ | |
| 2219 \ | |
| 2220 notproduct(bool, VerifyLoopOptimizations, false, \ | |
| 2221 "verify major loop optimizations") \ | |
| 2222 \ | |
| 2223 product(bool, RangeCheckElimination, true, \ | |
| 2224 "Split loop iterations to eliminate range checks") \ | |
| 2225 \ | |
| 2226 develop_pd(bool, UncommonNullCast, \ | |
| 2227 "track occurrences of null in casts; adjust compiler tactics") \ | |
| 2228 \ | |
| 2229 develop(bool, TypeProfileCasts, true, \ | |
| 2230 "treat casts like calls for purposes of type profiling") \ | |
| 2231 \ | |
| 2232 develop(bool, MonomorphicArrayCheck, true, \ | |
| 2233 "Uncommon-trap array store checks that require full type check") \ | |
| 2234 \ | |
| 2235 develop(bool, DelayCompilationDuringStartup, true, \ | |
| 2236 "Delay invoking the compiler until main application class is " \ | |
| 2237 "loaded") \ | |
| 2238 \ | |
| 2239 develop(bool, CompileTheWorld, false, \ | |
| 2240 "Compile all methods in all classes in bootstrap class path " \ | |
| 2241 "(stress test)") \ | |
| 2242 \ | |
| 2243 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
| 2244 "Preload all classes used by a class before start loading") \ | |
| 2245 \ | |
| 2246 notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \ | |
| 2247 "Compile all methods although class initializer failed") \ | |
| 2248 \ | |
| 2249 develop(bool, TraceIterativeGVN, false, \ | |
| 2250 "Print progress during Iterative Global Value Numbering") \ | |
| 2251 \ | |
| 2252 develop(bool, FillDelaySlots, true, \ | |
| 2253 "Fill delay slots (on SPARC only)") \ | |
| 2254 \ | |
| 2255 develop(bool, VerifyIterativeGVN, false, \ | |
| 2256 "Verify Def-Use modifications during sparse Iterative Global " \ | |
| 2257 "Value Numbering") \ | |
| 2258 \ | |
| 2259 notproduct(bool, TracePhaseCCP, false, \ | |
| 2260 "Print progress during Conditional Constant Propagation") \ | |
| 2261 \ | |
| 2262 develop(bool, TimeLivenessAnalysis, false, \ | |
| 2263 "Time computation of bytecode liveness analysis") \ | |
| 2264 \ | |
| 2265 develop(bool, TraceLivenessGen, false, \ | |
| 2266 "Trace the generation of liveness analysis information") \ | |
| 2267 \ | |
| 2268 notproduct(bool, TraceLivenessQuery, false, \ | |
| 2269 "Trace queries of liveness analysis information") \ | |
| 2270 \ | |
| 2271 notproduct(bool, CollectIndexSetStatistics, false, \ | |
| 2272 "Collect information about IndexSets") \ | |
| 2273 \ | |
| 2274 develop(bool, PrintDominators, false, \ | |
| 2275 "Print out dominator trees for GVN") \ | |
| 2276 \ | |
| 2277 develop(bool, UseLoopSafepoints, true, \ | |
| 2278 "Generate Safepoint nodes in every loop") \ | |
| 2279 \ | |
| 2280 notproduct(bool, TraceCISCSpill, false, \ | |
| 2281 "Trace allocators use of cisc spillable instructions") \ | |
| 2282 \ | |
| 2283 notproduct(bool, TraceSpilling, false, \ | |
| 2284 "Trace spilling") \ | |
| 2285 \ | |
| 2286 develop(bool, DeutschShiffmanExceptions, true, \ | |
| 2287 "Fast check to find exception handler for precisely typed " \ | |
| 2288 "exceptions") \ | |
| 2289 \ | |
| 2290 product(bool, SplitIfBlocks, true, \ | |
| 2291 "Clone compares and control flow through merge points to fold " \ | |
| 2292 "some branches") \ | |
| 2293 \ | |
| 2294 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
| 2295 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
| 2296 "Inline allocations larger than this in doublewords must go slow")\ | |
| 2297 \ | |
| 2298 product(bool, AggressiveOpts, false, \ | |
| 2299 "Enable aggressive optimizations - see arguments.cpp") \ | |
| 2300 \ | |
|
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2301 product(bool, UseStringCache, false, \ |
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2302 "Enable String cache capabilities on String.java") \ |
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2303 \ |
| 0 | 2304 /* statistics */ \ |
| 2305 develop(bool, UseVTune, false, \ | |
| 2306 "enable support for Intel's VTune profiler") \ | |
| 2307 \ | |
| 2308 develop(bool, CountCompiledCalls, false, \ | |
| 2309 "counts method invocations") \ | |
| 2310 \ | |
| 2311 notproduct(bool, CountRuntimeCalls, false, \ | |
| 2312 "counts VM runtime calls") \ | |
| 2313 \ | |
| 2314 develop(bool, CountJNICalls, false, \ | |
| 2315 "counts jni method invocations") \ | |
| 2316 \ | |
| 2317 notproduct(bool, CountJVMCalls, false, \ | |
| 2318 "counts jvm method invocations") \ | |
| 2319 \ | |
| 2320 notproduct(bool, CountRemovableExceptions, false, \ | |
| 2321 "count exceptions that could be replaced by branches due to " \ | |
| 2322 "inlining") \ | |
| 2323 \ | |
| 2324 notproduct(bool, ICMissHistogram, false, \ | |
| 2325 "produce histogram of IC misses") \ | |
| 2326 \ | |
| 2327 notproduct(bool, PrintClassStatistics, false, \ | |
| 2328 "prints class statistics at end of run") \ | |
| 2329 \ | |
| 2330 notproduct(bool, PrintMethodStatistics, false, \ | |
| 2331 "prints method statistics at end of run") \ | |
| 2332 \ | |
| 2333 /* interpreter */ \ | |
| 2334 develop(bool, ClearInterpreterLocals, false, \ | |
| 2335 "Always clear local variables of interpreter activations upon " \ | |
| 2336 "entry") \ | |
| 2337 \ | |
| 2338 product_pd(bool, RewriteBytecodes, \ | |
| 2339 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
| 2340 \ | |
| 2341 product_pd(bool, RewriteFrequentPairs, \ | |
| 2342 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
| 2343 \ | |
|
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2344 diagnostic(bool, PrintInterpreter, false, \ |
| 0 | 2345 "Prints the generated interpreter code") \ |
| 2346 \ | |
| 2347 product(bool, UseInterpreter, true, \ | |
| 2348 "Use interpreter for non-compiled methods") \ | |
| 2349 \ | |
| 2350 develop(bool, UseFastSignatureHandlers, true, \ | |
| 2351 "Use fast signature handlers for native calls") \ | |
| 2352 \ | |
| 2353 develop(bool, UseV8InstrsOnly, false, \ | |
| 2354 "Use SPARC-V8 Compliant instruction subset") \ | |
| 2355 \ | |
| 2356 product(bool, UseNiagaraInstrs, false, \ | |
| 2357 "Use Niagara-efficient instruction subset") \ | |
| 2358 \ | |
| 2359 develop(bool, UseCASForSwap, false, \ | |
| 2360 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ | |
| 2361 \ | |
| 2362 product(bool, UseLoopCounter, true, \ | |
| 2363 "Increment invocation counter on backward branch") \ | |
| 2364 \ | |
| 2365 product(bool, UseFastEmptyMethods, true, \ | |
| 2366 "Use fast method entry code for empty methods") \ | |
| 2367 \ | |
| 2368 product(bool, UseFastAccessorMethods, true, \ | |
| 2369 "Use fast method entry code for accessor methods") \ | |
| 2370 \ | |
| 2371 product_pd(bool, UseOnStackReplacement, \ | |
| 2372 "Use on stack replacement, calls runtime if invoc. counter " \ | |
| 2373 "overflows in loop") \ | |
| 2374 \ | |
| 2375 notproduct(bool, TraceOnStackReplacement, false, \ | |
| 2376 "Trace on stack replacement") \ | |
| 2377 \ | |
| 2378 develop(bool, PoisonOSREntry, true, \ | |
| 2379 "Detect abnormal calls to OSR code") \ | |
| 2380 \ | |
| 2381 product_pd(bool, PreferInterpreterNativeStubs, \ | |
| 2382 "Use always interpreter stubs for native methods invoked via " \ | |
| 2383 "interpreter") \ | |
| 2384 \ | |
| 2385 develop(bool, CountBytecodes, false, \ | |
| 2386 "Count number of bytecodes executed") \ | |
| 2387 \ | |
| 2388 develop(bool, PrintBytecodeHistogram, false, \ | |
| 2389 "Print histogram of the executed bytecodes") \ | |
| 2390 \ | |
| 2391 develop(bool, PrintBytecodePairHistogram, false, \ | |
| 2392 "Print histogram of the executed bytecode pairs") \ | |
| 2393 \ | |
|
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2394 diagnostic(bool, PrintSignatureHandlers, false, \ |
| 0 | 2395 "Print code generated for native method signature handlers") \ |
| 2396 \ | |
| 2397 develop(bool, VerifyOops, false, \ | |
| 2398 "Do plausibility checks for oops") \ | |
| 2399 \ | |
| 2400 develop(bool, CheckUnhandledOops, false, \ | |
| 2401 "Check for unhandled oops in VM code") \ | |
| 2402 \ | |
| 2403 develop(bool, VerifyJNIFields, trueInDebug, \ | |
| 2404 "Verify jfieldIDs for instance fields") \ | |
| 2405 \ | |
| 2406 notproduct(bool, VerifyJNIEnvThread, false, \ | |
| 2407 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
| 2408 "from JNI") \ | |
| 2409 \ | |
| 2410 develop(bool, VerifyFPU, false, \ | |
| 2411 "Verify FPU state (check for NaN's, etc.)") \ | |
| 2412 \ | |
| 2413 develop(bool, VerifyThread, false, \ | |
| 2414 "Watch the thread register for corruption (SPARC only)") \ | |
| 2415 \ | |
| 2416 develop(bool, VerifyActivationFrameSize, false, \ | |
| 2417 "Verify that activation frame didn't become smaller than its " \ | |
| 2418 "minimal size") \ | |
| 2419 \ | |
| 2420 develop(bool, TraceFrequencyInlining, false, \ | |
| 2421 "Trace frequency based inlining") \ | |
| 2422 \ | |
| 2423 notproduct(bool, TraceTypeProfile, false, \ | |
| 2424 "Trace type profile") \ | |
| 2425 \ | |
| 2426 develop_pd(bool, InlineIntrinsics, \ | |
| 2427 "Inline intrinsics that can be statically resolved") \ | |
| 2428 \ | |
| 2429 product_pd(bool, ProfileInterpreter, \ | |
| 2430 "Profile at the bytecode level during interpretation") \ | |
| 2431 \ | |
| 2432 develop_pd(bool, ProfileTraps, \ | |
| 2433 "Profile deoptimization traps at the bytecode level") \ | |
| 2434 \ | |
| 2435 product(intx, ProfileMaturityPercentage, 20, \ | |
| 2436 "number of method invocations/branches (expressed as % of " \ | |
| 2437 "CompileThreshold) before using the method's profile") \ | |
| 2438 \ | |
| 2439 develop(bool, PrintMethodData, false, \ | |
| 2440 "Print the results of +ProfileInterpreter at end of run") \ | |
| 2441 \ | |
| 2442 develop(bool, VerifyDataPointer, trueInDebug, \ | |
| 2443 "Verify the method data pointer during interpreter profiling") \ | |
| 2444 \ | |
| 2445 develop(bool, VerifyCompiledCode, false, \ | |
| 2446 "Include miscellaneous runtime verifications in nmethod code; " \ | |
| 2447 "off by default because it disturbs nmethod size heuristics.") \ | |
| 2448 \ | |
| 2449 \ | |
| 2450 /* compilation */ \ | |
| 2451 product(bool, UseCompiler, true, \ | |
| 2452 "use compilation") \ | |
| 2453 \ | |
| 2454 develop(bool, TraceCompilationPolicy, false, \ | |
| 2455 "Trace compilation policy") \ | |
| 2456 \ | |
| 2457 develop(bool, TimeCompilationPolicy, false, \ | |
| 2458 "Time the compilation policy") \ | |
| 2459 \ | |
| 2460 product(bool, UseCounterDecay, true, \ | |
| 2461 "adjust recompilation counters") \ | |
| 2462 \ | |
| 2463 develop(intx, CounterHalfLifeTime, 30, \ | |
| 2464 "half-life time of invocation counters (in secs)") \ | |
| 2465 \ | |
| 2466 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
| 2467 "Min. ms. between invocation of CounterDecay") \ | |
| 2468 \ | |
| 2469 product(bool, AlwaysCompileLoopMethods, false, \ | |
| 2470 "when using recompilation, never interpret methods " \ | |
| 2471 "containing loops") \ | |
| 2472 \ | |
| 2473 product(bool, DontCompileHugeMethods, true, \ | |
| 2474 "don't compile methods > HugeMethodLimit") \ | |
| 2475 \ | |
| 2476 /* Bytecode escape analysis estimation. */ \ | |
| 2477 product(bool, EstimateArgEscape, true, \ | |
| 2478 "Analyze bytecodes to estimate escape state of arguments") \ | |
| 2479 \ | |
| 2480 product(intx, BCEATraceLevel, 0, \ | |
| 2481 "How much tracing to do of bytecode escape analysis estimates") \ | |
| 2482 \ | |
| 2483 product(intx, MaxBCEAEstimateLevel, 5, \ | |
| 2484 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
| 2485 \ | |
| 2486 product(intx, MaxBCEAEstimateSize, 150, \ | |
| 2487 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
| 2488 \ | |
| 2489 product(intx, AllocatePrefetchStyle, 1, \ | |
| 2490 "0 = no prefetch, " \ | |
| 2491 "1 = prefetch instructions for each allocation, " \ | |
| 2492 "2 = use TLAB watermark to gate allocation prefetch") \ | |
| 2493 \ | |
| 2494 product(intx, AllocatePrefetchDistance, -1, \ | |
| 2495 "Distance to prefetch ahead of allocation pointer") \ | |
| 2496 \ | |
| 2497 product(intx, AllocatePrefetchLines, 1, \ | |
| 2498 "Number of lines to prefetch ahead of allocation pointer") \ | |
| 2499 \ | |
| 2500 product(intx, AllocatePrefetchStepSize, 16, \ | |
| 2501 "Step size in bytes of sequential prefetch instructions") \ | |
| 2502 \ | |
| 2503 product(intx, AllocatePrefetchInstr, 0, \ | |
| 2504 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
| 2505 \ | |
| 2506 product(intx, ReadPrefetchInstr, 0, \ | |
| 2507 "Prefetch instruction to prefetch ahead") \ | |
| 2508 \ | |
| 2509 /* deoptimization */ \ | |
| 2510 develop(bool, TraceDeoptimization, false, \ | |
| 2511 "Trace deoptimization") \ | |
| 2512 \ | |
| 2513 develop(bool, DebugDeoptimization, false, \ | |
| 2514 "Tracing various information while debugging deoptimization") \ | |
| 2515 \ | |
| 2516 product(intx, SelfDestructTimer, 0, \ | |
| 2517 "Will cause VM to terminate after a given time (in minutes) " \ | |
| 2518 "(0 means off)") \ | |
| 2519 \ | |
| 2520 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
| 2521 "Max. no. of lines in the stack trace for Java exceptions " \ | |
| 2522 "(0 means all)") \ | |
| 2523 \ | |
| 2524 develop(intx, GuaranteedSafepointInterval, 1000, \ | |
| 2525 "Guarantee a safepoint (at least) every so many milliseconds " \ | |
| 2526 "(0 means none)") \ | |
| 2527 \ | |
| 2528 product(intx, SafepointTimeoutDelay, 10000, \ | |
| 2529 "Delay in milliseconds for option SafepointTimeout") \ | |
| 2530 \ | |
| 2531 product(intx, NmethodSweepFraction, 4, \ | |
| 2532 "Number of invocations of sweeper to cover all nmethods") \ | |
| 2533 \ | |
| 2534 notproduct(intx, MemProfilingInterval, 500, \ | |
| 2535 "Time between each invocation of the MemProfiler") \ | |
| 2536 \ | |
| 2537 develop(intx, MallocCatchPtr, -1, \ | |
| 2538 "Hit breakpoint when mallocing/freeing this pointer") \ | |
| 2539 \ | |
| 2540 notproduct(intx, AssertRepeat, 1, \ | |
| 2541 "number of times to evaluate expression in assert " \ | |
| 2542 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
| 2543 \ | |
| 2544 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
| 2545 "List of assertions (file:line) to muzzle") \ | |
| 2546 \ | |
| 2547 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
| 2548 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
| 2549 "is used") \ | |
| 2550 \ | |
| 2551 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
| 2552 "Threshold for total handle allocation when " \ | |
| 2553 "+TraceHandleAllocation is used") \ | |
| 2554 \ | |
| 2555 develop(intx, StackPrintLimit, 100, \ | |
| 2556 "number of stack frames to print in VM-level stack dump") \ | |
| 2557 \ | |
| 2558 notproduct(intx, MaxElementPrintSize, 256, \ | |
| 2559 "maximum number of elements to print") \ | |
| 2560 \ | |
| 2561 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
| 2562 "maximum number of subklasses to print when printing klass") \ | |
| 2563 \ | |
| 2564 develop(intx, MaxInlineLevel, 9, \ | |
| 2565 "maximum number of nested calls that are inlined") \ | |
| 2566 \ | |
| 2567 develop(intx, MaxRecursiveInlineLevel, 1, \ | |
| 2568 "maximum number of nested recursive calls that are inlined") \ | |
| 2569 \ | |
|
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2570 product(intx, InlineSmallCode, 1000, \ |
| 0 | 2571 "Only inline already compiled methods if their code size is " \ |
| 2572 "less than this") \ | |
| 2573 \ | |
| 2574 product(intx, MaxInlineSize, 35, \ | |
| 2575 "maximum bytecode size of a method to be inlined") \ | |
| 2576 \ | |
| 2577 product_pd(intx, FreqInlineSize, \ | |
| 2578 "maximum bytecode size of a frequent method to be inlined") \ | |
| 2579 \ | |
| 2580 develop(intx, MaxTrivialSize, 6, \ | |
| 2581 "maximum bytecode size of a trivial method to be inlined") \ | |
| 2582 \ | |
| 2583 develop(intx, MinInliningThreshold, 250, \ | |
| 2584 "min. invocation count a method needs to have to be inlined") \ | |
| 2585 \ | |
| 2586 develop(intx, AlignEntryCode, 4, \ | |
| 2587 "aligns entry code to specified value (in bytes)") \ | |
| 2588 \ | |
| 2589 develop(intx, MethodHistogramCutoff, 100, \ | |
| 2590 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
| 2591 \ | |
| 2592 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
| 2593 "# of interpreted methods to show in profile") \ | |
| 2594 \ | |
| 2595 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
| 2596 "# of compiled methods to show in profile") \ | |
| 2597 \ | |
| 2598 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
| 2599 "# of stub methods to show in profile") \ | |
| 2600 \ | |
| 2601 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
| 2602 "# of runtime stub nodes to show in profile") \ | |
| 2603 \ | |
| 2604 product(intx, ProfileIntervalsTicks, 100, \ | |
| 2605 "# of ticks between printing of interval profile " \ | |
| 2606 "(+ProfileIntervals)") \ | |
| 2607 \ | |
| 2608 notproduct(intx, ScavengeALotInterval, 1, \ | |
| 2609 "Interval between which scavenge will occur with +ScavengeALot") \ | |
| 2610 \ | |
| 2611 notproduct(intx, FullGCALotInterval, 1, \ | |
| 2612 "Interval between which full gc will occur with +FullGCALot") \ | |
| 2613 \ | |
| 2614 notproduct(intx, FullGCALotStart, 0, \ | |
| 2615 "For which invocation to start FullGCAlot") \ | |
| 2616 \ | |
| 2617 notproduct(intx, FullGCALotDummies, 32*K, \ | |
| 2618 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
| 2619 "to move") \ | |
| 2620 \ | |
| 2621 develop(intx, DontYieldALotInterval, 10, \ | |
| 2622 "Interval between which yields will be dropped (milliseconds)") \ | |
| 2623 \ | |
| 2624 develop(intx, MinSleepInterval, 1, \ | |
| 2625 "Minimum sleep() interval (milliseconds) when " \ | |
| 2626 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
| 2627 \ | |
| 2628 product(intx, EventLogLength, 2000, \ | |
| 2629 "maximum nof events in event log") \ | |
| 2630 \ | |
| 2631 develop(intx, ProfilerPCTickThreshold, 15, \ | |
| 2632 "Number of ticks in a PC buckets to be a hotspot") \ | |
| 2633 \ | |
| 2634 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
| 2635 "Number of exits until DeoptimizeALot kicks in") \ | |
| 2636 \ | |
| 2637 notproduct(intx, ZombieALotInterval, 5, \ | |
| 2638 "Number of exits until ZombieALot kicks in") \ | |
| 2639 \ | |
| 2640 develop(bool, StressNonEntrant, false, \ | |
| 2641 "Mark nmethods non-entrant at registration") \ | |
| 2642 \ | |
| 2643 diagnostic(intx, MallocVerifyInterval, 0, \ | |
| 2644 "if non-zero, verify C heap after every N calls to " \ | |
| 2645 "malloc/realloc/free") \ | |
| 2646 \ | |
| 2647 diagnostic(intx, MallocVerifyStart, 0, \ | |
| 2648 "if non-zero, start verifying C heap after Nth call to " \ | |
| 2649 "malloc/realloc/free") \ | |
| 2650 \ | |
| 2651 product(intx, TypeProfileWidth, 2, \ | |
| 2652 "number of receiver types to record in call/cast profile") \ | |
| 2653 \ | |
| 2654 develop(intx, BciProfileWidth, 2, \ | |
| 2655 "number of return bci's to record in ret profile") \ | |
| 2656 \ | |
| 2657 product(intx, PerMethodRecompilationCutoff, 400, \ | |
| 2658 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
| 2659 \ | |
| 2660 product(intx, PerBytecodeRecompilationCutoff, 100, \ | |
| 2661 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ | |
| 2662 \ | |
| 2663 product(intx, PerMethodTrapLimit, 100, \ | |
| 2664 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
| 2665 \ | |
| 2666 product(intx, PerBytecodeTrapLimit, 4, \ | |
| 2667 "Limit on traps (of one kind) at a particular BCI") \ | |
| 2668 \ | |
| 2669 develop(intx, FreqCountInvocations, 1, \ | |
| 2670 "Scaling factor for branch frequencies (deprecated)") \ | |
| 2671 \ | |
| 2672 develop(intx, InlineFrequencyRatio, 20, \ | |
| 2673 "Ratio of call site execution to caller method invocation") \ | |
| 2674 \ | |
| 2675 develop_pd(intx, InlineFrequencyCount, \ | |
| 2676 "Count of call site execution necessary to trigger frequent " \ | |
| 2677 "inlining") \ | |
| 2678 \ | |
| 2679 develop(intx, InlineThrowCount, 50, \ | |
| 2680 "Force inlining of interpreted methods that throw this often") \ | |
| 2681 \ | |
| 2682 develop(intx, InlineThrowMaxSize, 200, \ | |
| 2683 "Force inlining of throwing methods smaller than this") \ | |
| 2684 \ | |
| 2685 product(intx, AliasLevel, 3, \ | |
| 2686 "0 for no aliasing, 1 for oop/field/static/array split, " \ | |
| 2687 "2 for class split, 3 for unique instances") \ | |
| 2688 \ | |
| 2689 develop(bool, VerifyAliases, false, \ | |
| 2690 "perform extra checks on the results of alias analysis") \ | |
| 2691 \ | |
| 2692 develop(intx, ProfilerNodeSize, 1024, \ | |
| 2693 "Size in K to allocate for the Profile Nodes of each thread") \ | |
| 2694 \ | |
| 2695 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ | |
| 2696 "Number of times to spin wait on a v8 atomic operation lock") \ | |
| 2697 \ | |
| 2698 product(intx, ReadSpinIterations, 100, \ | |
| 2699 "Number of read attempts before a yield (spin inner loop)") \ | |
| 2700 \ | |
| 2701 product_pd(intx, PreInflateSpin, \ | |
| 2702 "Number of times to spin wait before inflation") \ | |
| 2703 \ | |
| 2704 product(intx, PreBlockSpin, 10, \ | |
| 2705 "Number of times to spin in an inflated lock before going to " \ | |
| 2706 "an OS lock") \ | |
| 2707 \ | |
| 2708 /* gc parameters */ \ | |
| 2709 product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \ | |
| 2710 "Default maximum size for object heap (in bytes)") \ | |
| 2711 \ | |
| 2712 product_pd(uintx, NewSize, \ | |
| 2713 "Default size of new generation (in bytes)") \ | |
| 2714 \ | |
| 2715 product(uintx, MaxNewSize, max_uintx, \ | |
| 2716 "Maximum size of new generation (in bytes)") \ | |
| 2717 \ | |
| 2718 product(uintx, PretenureSizeThreshold, 0, \ | |
| 2719 "Max size in bytes of objects allocated in DefNew generation") \ | |
| 2720 \ | |
| 2721 product_pd(uintx, TLABSize, \ | |
| 2722 "Default (or starting) size of TLAB (in bytes)") \ | |
| 2723 \ | |
| 2724 product(uintx, MinTLABSize, 2*K, \ | |
| 2725 "Minimum allowed TLAB size (in bytes)") \ | |
| 2726 \ | |
| 2727 product(uintx, TLABAllocationWeight, 35, \ | |
| 2728 "Allocation averaging weight") \ | |
| 2729 \ | |
| 2730 product(uintx, TLABWasteTargetPercent, 1, \ | |
| 2731 "Percentage of Eden that can be wasted") \ | |
| 2732 \ | |
| 2733 product(uintx, TLABRefillWasteFraction, 64, \ | |
| 2734 "Max TLAB waste at a refill (internal fragmentation)") \ | |
| 2735 \ | |
| 2736 product(uintx, TLABWasteIncrement, 4, \ | |
| 2737 "Increment allowed waste at slow allocation") \ | |
| 2738 \ | |
| 2739 product_pd(intx, SurvivorRatio, \ | |
| 2740 "Ratio of eden/survivor space size") \ | |
| 2741 \ | |
| 2742 product_pd(intx, NewRatio, \ | |
| 2743 "Ratio of new/old generation sizes") \ | |
| 2744 \ | |
| 2745 product(uintx, MaxLiveObjectEvacuationRatio, 100, \ | |
| 2746 "Max percent of eden objects that will be live at scavenge") \ | |
| 2747 \ | |
| 2748 product_pd(uintx, NewSizeThreadIncrease, \ | |
| 2749 "Additional size added to desired new generation size per " \ | |
| 2750 "non-daemon thread (in bytes)") \ | |
| 2751 \ | |
| 2752 product(uintx, OldSize, ScaleForWordSize(4096*K), \ | |
| 2753 "Default size of tenured generation (in bytes)") \ | |
| 2754 \ | |
| 2755 product_pd(uintx, PermSize, \ | |
| 2756 "Default size of permanent generation (in bytes)") \ | |
| 2757 \ | |
| 2758 product_pd(uintx, MaxPermSize, \ | |
| 2759 "Maximum size of permanent generation (in bytes)") \ | |
| 2760 \ | |
| 2761 product(uintx, MinHeapFreeRatio, 40, \ | |
| 2762 "Min percentage of heap free after GC to avoid expansion") \ | |
| 2763 \ | |
| 2764 product(uintx, MaxHeapFreeRatio, 70, \ | |
| 2765 "Max percentage of heap free after GC to avoid shrinking") \ | |
| 2766 \ | |
| 2767 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
| 2768 "Number of milliseconds per MB of free space in the heap") \ | |
| 2769 \ | |
| 2770 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
| 2771 "Min change in heap space due to GC (in bytes)") \ | |
| 2772 \ | |
| 2773 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
| 2774 "Min expansion of permanent heap (in bytes)") \ | |
| 2775 \ | |
| 2776 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
| 2777 "Max expansion of permanent heap without full GC (in bytes)") \ | |
| 2778 \ | |
| 2779 product(intx, QueuedAllocationWarningCount, 0, \ | |
| 2780 "Number of times an allocation that queues behind a GC " \ | |
| 2781 "will retry before printing a warning") \ | |
| 2782 \ | |
| 2783 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
| 2784 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
| 2785 \ | |
| 2786 diagnostic(intx, VerifyGCLevel, 0, \ | |
| 2787 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
| 2788 \ | |
| 2789 develop(uintx, ExitAfterGCNum, 0, \ | |
| 2790 "If non-zero, exit after this GC.") \ | |
| 2791 \ | |
| 2792 product(intx, MaxTenuringThreshold, 15, \ | |
| 2793 "Maximum value for tenuring threshold") \ | |
| 2794 \ | |
| 2795 product(intx, InitialTenuringThreshold, 7, \ | |
| 2796 "Initial value for tenuring threshold") \ | |
| 2797 \ | |
| 2798 product(intx, TargetSurvivorRatio, 50, \ | |
| 2799 "Desired percentage of survivor space used after scavenge") \ | |
| 2800 \ | |
| 438 | 2801 product(uintx, MarkSweepDeadRatio, 5, \ |
| 0 | 2802 "Percentage (0-100) of the old gen allowed as dead wood." \ |
| 2803 "Serial mark sweep treats this as both the min and max value." \ | |
| 2804 "CMS uses this value only if it falls back to mark sweep." \ | |
| 2805 "Par compact uses a variable scale based on the density of the" \ | |
| 2806 "generation and treats this as the max value when the heap is" \ | |
| 2807 "either completely full or completely empty. Par compact also" \ | |
| 2808 "has a smaller default value; see arguments.cpp.") \ | |
| 2809 \ | |
| 438 | 2810 product(uintx, PermMarkSweepDeadRatio, 20, \ |
| 0 | 2811 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
| 2812 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
| 2813 \ | |
| 2814 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
| 2815 "How often should we fully compact the heap (ignoring the dead " \ | |
| 2816 "space parameters)") \ | |
| 2817 \ | |
| 2818 product(intx, PrintCMSStatistics, 0, \ | |
| 2819 "Statistics for CMS") \ | |
| 2820 \ | |
| 2821 product(bool, PrintCMSInitiationStatistics, false, \ | |
| 2822 "Statistics for initiating a CMS collection") \ | |
| 2823 \ | |
| 2824 product(intx, PrintFLSStatistics, 0, \ | |
| 2825 "Statistics for CMS' FreeListSpace") \ | |
| 2826 \ | |
| 2827 product(intx, PrintFLSCensus, 0, \ | |
| 2828 "Census for CMS' FreeListSpace") \ | |
| 2829 \ | |
| 2830 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
| 2831 "Delay in ms between expansion and allocation") \ | |
| 2832 \ | |
| 2833 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
| 2834 "(Unstable) Number of times to iterate in safepoint loop " \ | |
| 2835 " before blocking VM threads ") \ | |
| 2836 \ | |
| 2837 product(intx, DeferPollingPageLoopCount, -1, \ | |
| 2838 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
| 2839 "before changing safepoint polling page to RO ") \ | |
| 2840 \ | |
| 2841 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
| 2842 \ | |
| 2843 product(bool, UseDepthFirstScavengeOrder, true, \ | |
| 2844 "true: the scavenge order will be depth-first, " \ | |
| 2845 "false: the scavenge order will be breadth-first") \ | |
| 2846 \ | |
| 2847 product(bool, PSChunkLargeArrays, true, \ | |
| 2848 "true: process large arrays in chunks") \ | |
| 2849 \ | |
| 2850 product(uintx, GCDrainStackTargetSize, 64, \ | |
| 2851 "how many entries we'll try to leave on the stack during " \ | |
| 2852 "parallel GC") \ | |
| 2853 \ | |
|
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2854 product(intx, DCQBarrierQueueBufferSize, 256, \ |
|
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2855 "Number of elements in a dirty card queue buffer") \ |
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2856 \ |
|
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2857 product(intx, DCQBarrierProcessCompletedThreshold, 5, \ |
|
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2858 "Number of completed dirty card buffers to trigger processing.") \ |
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|
2859 \ |
| 0 | 2860 /* stack parameters */ \ |
| 2861 product_pd(intx, StackYellowPages, \ | |
| 2862 "Number of yellow zone (recoverable overflows) pages") \ | |
| 2863 \ | |
| 2864 product_pd(intx, StackRedPages, \ | |
| 2865 "Number of red zone (unrecoverable overflows) pages") \ | |
| 2866 \ | |
| 2867 product_pd(intx, StackShadowPages, \ | |
| 2868 "Number of shadow zone (for overflow checking) pages" \ | |
| 2869 " this should exceed the depth of the VM and native call stack") \ | |
| 2870 \ | |
| 2871 product_pd(intx, ThreadStackSize, \ | |
| 2872 "Thread Stack Size (in Kbytes)") \ | |
| 2873 \ | |
| 2874 product_pd(intx, VMThreadStackSize, \ | |
| 2875 "Non-Java Thread Stack Size (in Kbytes)") \ | |
| 2876 \ | |
| 2877 product_pd(intx, CompilerThreadStackSize, \ | |
| 2878 "Compiler Thread Stack Size (in Kbytes)") \ | |
| 2879 \ | |
| 2880 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
| 2881 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
| 2882 \ | |
| 2883 product(uintx, ThreadSafetyMargin, 50*M, \ | |
| 2884 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
| 2885 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
| 2886 "disable this feature") \ | |
| 2887 \ | |
| 2888 /* code cache parameters */ \ | |
| 2889 develop(uintx, CodeCacheSegmentSize, 64, \ | |
| 2890 "Code cache segment size (in bytes) - smallest unit of " \ | |
| 2891 "allocation") \ | |
| 2892 \ | |
| 2893 develop_pd(intx, CodeEntryAlignment, \ | |
| 2894 "Code entry alignment for generated code (in bytes)") \ | |
| 2895 \ | |
| 2896 product_pd(uintx, InitialCodeCacheSize, \ | |
| 2897 "Initial code cache size (in bytes)") \ | |
| 2898 \ | |
| 2899 product_pd(uintx, ReservedCodeCacheSize, \ | |
| 2900 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
| 2901 \ | |
| 2902 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
| 2903 "When less than X space left, we stop compiling.") \ | |
| 2904 \ | |
| 2905 product_pd(uintx, CodeCacheExpansionSize, \ | |
| 2906 "Code cache expansion size (in bytes)") \ | |
| 2907 \ | |
| 2908 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
| 2909 "Minimum number of segments in a code cache block.") \ | |
| 2910 \ | |
| 2911 notproduct(bool, ExitOnFullCodeCache, false, \ | |
| 2912 "Exit the VM if we fill the code cache.") \ | |
| 2913 \ | |
| 2914 /* interpreter debugging */ \ | |
| 2915 develop(intx, BinarySwitchThreshold, 5, \ | |
| 2916 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
| 2917 "switch") \ | |
| 2918 \ | |
| 2919 develop(intx, StopInterpreterAt, 0, \ | |
| 2920 "Stops interpreter execution at specified bytecode number") \ | |
| 2921 \ | |
| 2922 develop(intx, TraceBytecodesAt, 0, \ | |
| 2923 "Traces bytecodes starting with specified bytecode number") \ | |
| 2924 \ | |
| 2925 /* compiler interface */ \ | |
| 2926 develop(intx, CIStart, 0, \ | |
| 2927 "the id of the first compilation to permit") \ | |
| 2928 \ | |
| 2929 develop(intx, CIStop, -1, \ | |
| 2930 "the id of the last compilation to permit") \ | |
| 2931 \ | |
| 2932 develop(intx, CIStartOSR, 0, \ | |
| 2933 "the id of the first osr compilation to permit " \ | |
| 2934 "(CICountOSR must be on)") \ | |
| 2935 \ | |
| 2936 develop(intx, CIStopOSR, -1, \ | |
| 2937 "the id of the last osr compilation to permit " \ | |
| 2938 "(CICountOSR must be on)") \ | |
| 2939 \ | |
| 2940 develop(intx, CIBreakAtOSR, -1, \ | |
| 2941 "id of osr compilation to break at") \ | |
| 2942 \ | |
| 2943 develop(intx, CIBreakAt, -1, \ | |
| 2944 "id of compilation to break at") \ | |
| 2945 \ | |
| 2946 product(ccstrlist, CompileOnly, "", \ | |
| 2947 "List of methods (pkg/class.name) to restrict compilation to") \ | |
| 2948 \ | |
| 2949 product(ccstr, CompileCommandFile, NULL, \ | |
| 2950 "Read compiler commands from this file [.hotspot_compiler]") \ | |
| 2951 \ | |
| 2952 product(ccstrlist, CompileCommand, "", \ | |
| 2953 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
| 2954 \ | |
| 2955 product(bool, CICompilerCountPerCPU, false, \ | |
| 2956 "1 compiler thread for log(N CPUs)") \ | |
| 2957 \ | |
| 2958 develop(intx, CIFireOOMAt, -1, \ | |
| 2959 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
| 2960 "(non-negative value throws OOM after this many CI accesses " \ | |
| 2961 "in each compile)") \ | |
| 2962 \ | |
| 2963 develop(intx, CIFireOOMAtDelay, -1, \ | |
| 2964 "Wait for this many CI accesses to occur in all compiles before " \ | |
| 2965 "beginning to throw OutOfMemoryErrors in each compile") \ | |
| 2966 \ | |
| 2967 /* Priorities */ \ | |
| 2968 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
| 2969 \ | |
| 2970 product(intx, ThreadPriorityPolicy, 0, \ | |
| 2971 "0 : Normal. "\ | |
| 2972 " VM chooses priorities that are appropriate for normal "\ | |
| 2973 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
| 2974 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
| 2975 " map to lower native priority values. On Windows applications"\ | |
| 2976 " are allowed to use higher native priorities. However, with "\ | |
| 2977 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
| 2978 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
| 2979 " interfere with system threads. On Linux thread priorities "\ | |
| 2980 " are ignored because the OS does not support static priority "\ | |
| 2981 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
| 2982 " non-root, non-realtime applications. "\ | |
| 2983 "1 : Aggressive. "\ | |
| 2984 " Java thread priorities map over to the entire range of "\ | |
| 2985 " native thread priorities. Higher Java thread priorities map "\ | |
| 2986 " to higher native thread priorities. This policy should be "\ | |
| 2987 " used with care, as sometimes it can cause performance "\ | |
| 2988 " degradation in the application and/or the entire system. On "\ | |
| 2989 " Linux this policy requires root privilege.") \ | |
| 2990 \ | |
| 2991 product(bool, ThreadPriorityVerbose, false, \ | |
| 2992 "print priority changes") \ | |
| 2993 \ | |
| 2994 product(intx, DefaultThreadPriority, -1, \ | |
| 2995 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ | |
| 2996 \ | |
| 2997 product(intx, CompilerThreadPriority, -1, \ | |
| 2998 "what priority should compiler threads run at (-1 means no change)") \ | |
| 2999 \ | |
| 3000 product(intx, VMThreadPriority, -1, \ | |
| 3001 "what priority should VM threads run at (-1 means no change)") \ | |
| 3002 \ | |
| 3003 product(bool, CompilerThreadHintNoPreempt, true, \ | |
| 3004 "(Solaris only) Give compiler threads an extra quanta") \ | |
| 3005 \ | |
| 3006 product(bool, VMThreadHintNoPreempt, false, \ | |
| 3007 "(Solaris only) Give VM thread an extra quanta") \ | |
| 3008 \ | |
| 3009 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3010 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3011 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3012 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3013 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3014 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3015 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3016 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3017 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
| 3018 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
| 3019 \ | |
| 3020 /* compiler debugging */ \ | |
| 3021 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
| 3022 "First class to consider when using +CompileTheWorld") \ | |
| 3023 \ | |
| 3024 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
| 3025 "Last class to consider when using +CompileTheWorld") \ | |
| 3026 \ | |
| 3027 develop(intx, NewCodeParameter, 0, \ | |
| 3028 "Testing Only: Create a dedicated integer parameter before " \ | |
| 3029 "putback") \ | |
| 3030 \ | |
| 3031 /* new oopmap storage allocation */ \ | |
| 3032 develop(intx, MinOopMapAllocation, 8, \ | |
| 3033 "Minimum number of OopMap entries in an OopMapSet") \ | |
| 3034 \ | |
| 3035 /* Background Compilation */ \ | |
| 3036 develop(intx, LongCompileThreshold, 50, \ | |
| 3037 "Used with +TraceLongCompiles") \ | |
| 3038 \ | |
| 3039 product(intx, StarvationMonitorInterval, 200, \ | |
| 3040 "Pause between each check in ms") \ | |
| 3041 \ | |
| 3042 /* recompilation */ \ | |
| 3043 product_pd(intx, CompileThreshold, \ | |
| 3044 "number of interpreted method invocations before (re-)compiling") \ | |
| 3045 \ | |
| 3046 product_pd(intx, BackEdgeThreshold, \ | |
| 3047 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
| 3048 \ | |
| 3049 product(intx, Tier1BytecodeLimit, 10, \ | |
| 3050 "Must have at least this many bytecodes before tier1" \ | |
| 3051 "invocation counters are used") \ | |
| 3052 \ | |
| 3053 product_pd(intx, Tier2CompileThreshold, \ | |
| 3054 "threshold at which a tier 2 compilation is invoked") \ | |
| 3055 \ | |
| 3056 product_pd(intx, Tier2BackEdgeThreshold, \ | |
| 3057 "Back edge threshold at which a tier 2 compilation is invoked") \ | |
| 3058 \ | |
| 3059 product_pd(intx, Tier3CompileThreshold, \ | |
| 3060 "threshold at which a tier 3 compilation is invoked") \ | |
| 3061 \ | |
| 3062 product_pd(intx, Tier3BackEdgeThreshold, \ | |
| 3063 "Back edge threshold at which a tier 3 compilation is invoked") \ | |
| 3064 \ | |
| 3065 product_pd(intx, Tier4CompileThreshold, \ | |
| 3066 "threshold at which a tier 4 compilation is invoked") \ | |
| 3067 \ | |
| 3068 product_pd(intx, Tier4BackEdgeThreshold, \ | |
| 3069 "Back edge threshold at which a tier 4 compilation is invoked") \ | |
| 3070 \ | |
| 3071 product_pd(bool, TieredCompilation, \ | |
| 3072 "Enable two-tier compilation") \ | |
| 3073 \ | |
| 3074 product(bool, StressTieredRuntime, false, \ | |
| 3075 "Alternate client and server compiler on compile requests") \ | |
| 3076 \ | |
| 3077 product_pd(intx, OnStackReplacePercentage, \ | |
| 3078 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
| 3079 "of CompileThreshold) before (re-)compiling OSR code") \ | |
| 3080 \ | |
| 3081 product(intx, InterpreterProfilePercentage, 33, \ | |
| 3082 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
| 3083 "of CompileThreshold) before profiling in the interpreter") \ | |
| 3084 \ | |
| 3085 develop(intx, MaxRecompilationSearchLength, 10, \ | |
| 3086 "max. # frames to inspect searching for recompilee") \ | |
| 3087 \ | |
| 3088 develop(intx, MaxInterpretedSearchLength, 3, \ | |
| 3089 "max. # interp. frames to skip when searching for recompilee") \ | |
| 3090 \ | |
| 3091 develop(intx, DesiredMethodLimit, 8000, \ | |
| 3092 "desired max. method size (in bytecodes) after inlining") \ | |
| 3093 \ | |
| 3094 develop(intx, HugeMethodLimit, 8000, \ | |
| 3095 "don't compile methods larger than this if " \ | |
| 3096 "+DontCompileHugeMethods") \ | |
| 3097 \ | |
| 3098 /* New JDK 1.4 reflection implementation */ \ | |
| 3099 \ | |
| 3100 develop(bool, UseNewReflection, true, \ | |
| 3101 "Temporary flag for transition to reflection based on dynamic " \ | |
| 3102 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
| 3103 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
| 3104 "changes were needed") \ | |
| 3105 \ | |
| 3106 develop(bool, VerifyReflectionBytecodes, false, \ | |
| 3107 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
| 3108 "in situations like that described in 4486457 or for " \ | |
| 3109 "constructors generated for serialization, so can not be enabled "\ | |
| 3110 "in product.") \ | |
| 3111 \ | |
| 3112 product(bool, ReflectionWrapResolutionErrors, true, \ | |
| 3113 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
| 3114 "in InvocationTargetException. See 6531596") \ | |
| 3115 \ | |
| 3116 \ | |
| 3117 develop(intx, FastSuperclassLimit, 8, \ | |
| 3118 "Depth of hardwired instanceof accelerator array") \ | |
| 3119 \ | |
| 3120 /* Properties for Java libraries */ \ | |
| 3121 \ | |
| 3122 product(intx, MaxDirectMemorySize, -1, \ | |
| 3123 "Maximum total size of NIO direct-buffer allocations") \ | |
| 3124 \ | |
| 3125 /* temporary developer defined flags */ \ | |
| 3126 \ | |
| 3127 diagnostic(bool, UseNewCode, false, \ | |
| 3128 "Testing Only: Use the new version while testing") \ | |
| 3129 \ | |
| 3130 diagnostic(bool, UseNewCode2, false, \ | |
| 3131 "Testing Only: Use the new version while testing") \ | |
| 3132 \ | |
| 3133 diagnostic(bool, UseNewCode3, false, \ | |
| 3134 "Testing Only: Use the new version while testing") \ | |
| 3135 \ | |
| 3136 /* flags for performance data collection */ \ | |
| 3137 \ | |
| 3138 product(bool, UsePerfData, true, \ | |
| 3139 "Flag to disable jvmstat instrumentation for performance testing" \ | |
| 3140 "and problem isolation purposes.") \ | |
| 3141 \ | |
| 3142 product(bool, PerfDataSaveToFile, false, \ | |
| 3143 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
| 3144 \ | |
| 3145 product(ccstr, PerfDataSaveFile, NULL, \ | |
| 3146 "Save PerfData memory to the specified absolute pathname," \ | |
| 3147 "%p in the file name if present will be replaced by pid") \ | |
| 3148 \ | |
| 3149 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
| 3150 "Data sampling interval in milliseconds") \ | |
| 3151 \ | |
| 3152 develop(bool, PerfTraceDataCreation, false, \ | |
| 3153 "Trace creation of Performance Data Entries") \ | |
| 3154 \ | |
| 3155 develop(bool, PerfTraceMemOps, false, \ | |
| 3156 "Trace PerfMemory create/attach/detach calls") \ | |
| 3157 \ | |
| 3158 product(bool, PerfDisableSharedMem, false, \ | |
| 3159 "Store performance data in standard memory") \ | |
| 3160 \ | |
| 3161 product(intx, PerfDataMemorySize, 32*K, \ | |
| 3162 "Size of performance data memory region. Will be rounded " \ | |
| 3163 "up to a multiple of the native os page size.") \ | |
| 3164 \ | |
| 3165 product(intx, PerfMaxStringConstLength, 1024, \ | |
| 3166 "Maximum PerfStringConstant string length before truncation") \ | |
| 3167 \ | |
| 3168 product(bool, PerfAllowAtExitRegistration, false, \ | |
| 3169 "Allow registration of atexit() methods") \ | |
| 3170 \ | |
| 3171 product(bool, PerfBypassFileSystemCheck, false, \ | |
| 3172 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
| 3173 \ | |
| 3174 product(intx, UnguardOnExecutionViolation, 0, \ | |
| 3175 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
| 3176 "0=off, 1=conservative, 2=aggressive") \ | |
| 3177 \ | |
| 3178 /* Serviceability Support */ \ | |
| 3179 \ | |
| 3180 product(bool, ManagementServer, false, \ | |
| 3181 "Create JMX Management Server") \ | |
| 3182 \ | |
| 3183 product(bool, DisableAttachMechanism, false, \ | |
| 3184 "Disable mechanism that allows tools to attach to this VM") \ | |
| 3185 \ | |
| 3186 product(bool, StartAttachListener, false, \ | |
| 3187 "Always start Attach Listener at VM startup") \ | |
| 3188 \ | |
| 3189 manageable(bool, PrintConcurrentLocks, false, \ | |
| 3190 "Print java.util.concurrent locks in thread dump") \ | |
| 3191 \ | |
| 3192 /* Shared spaces */ \ | |
| 3193 \ | |
| 3194 product(bool, UseSharedSpaces, true, \ | |
| 3195 "Use shared spaces in the permanent generation") \ | |
| 3196 \ | |
| 3197 product(bool, RequireSharedSpaces, false, \ | |
| 3198 "Require shared spaces in the permanent generation") \ | |
| 3199 \ | |
| 3200 product(bool, ForceSharedSpaces, false, \ | |
| 3201 "Require shared spaces in the permanent generation") \ | |
| 3202 \ | |
| 3203 product(bool, DumpSharedSpaces, false, \ | |
| 3204 "Special mode: JVM reads a class list, loads classes, builds " \ | |
| 3205 "shared spaces, and dumps the shared spaces to a file to be " \ | |
| 3206 "used in future JVM runs.") \ | |
| 3207 \ | |
| 3208 product(bool, PrintSharedSpaces, false, \ | |
| 3209 "Print usage of shared spaces") \ | |
| 3210 \ | |
| 3211 product(uintx, SharedDummyBlockSize, 512*M, \ | |
| 3212 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
| 3213 \ | |
| 3214 product(uintx, SharedReadWriteSize, 12*M, \ | |
| 3215 "Size of read-write space in permanent generation (in bytes)") \ | |
| 3216 \ | |
| 3217 product(uintx, SharedReadOnlySize, 8*M, \ | |
| 3218 "Size of read-only space in permanent generation (in bytes)") \ | |
| 3219 \ | |
| 3220 product(uintx, SharedMiscDataSize, 4*M, \ | |
| 3221 "Size of the shared data area adjacent to the heap (in bytes)") \ | |
| 3222 \ | |
| 3223 product(uintx, SharedMiscCodeSize, 4*M, \ | |
| 3224 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
| 3225 \ | |
| 3226 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
| 3227 "At dump time, order shared objects to achieve better " \ | |
| 3228 "cold startup time.") \ | |
| 3229 \ | |
| 3230 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
| 3231 "Reordering policy for SharedOptimizeColdStart " \ | |
| 3232 "0=favor classload-time locality, 1=balanced, " \ | |
| 3233 "2=favor runtime locality") \ | |
| 3234 \ | |
| 3235 diagnostic(bool, SharedSkipVerify, false, \ | |
| 3236 "Skip assert() and verify() which page-in unwanted shared " \ | |
| 3237 "objects. ") \ | |
| 3238 \ | |
|
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3239 product(bool, AnonymousClasses, false, \ |
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3240 "support sun.misc.Unsafe.defineAnonymousClass") \ |
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3241 \ |
| 0 | 3242 product(bool, TaggedStackInterpreter, false, \ |
| 3243 "Insert tags in interpreter execution stack for oopmap generaion")\ | |
| 3244 \ | |
| 3245 diagnostic(bool, PauseAtStartup, false, \ | |
| 3246 "Causes the VM to pause at startup time and wait for the pause " \ | |
| 3247 "file to be removed (default: ./vm.paused.<pid>)") \ | |
| 3248 \ | |
| 3249 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
| 3250 "The file to create and for whose removal to await when pausing " \ | |
| 3251 "at startup. (default: ./vm.paused.<pid>)") \ | |
| 3252 \ | |
| 3253 product(bool, ExtendedDTraceProbes, false, \ | |
| 3254 "Enable performance-impacting dtrace probes") \ | |
| 3255 \ | |
| 3256 product(bool, DTraceMethodProbes, false, \ | |
| 3257 "Enable dtrace probes for method-entry and method-exit") \ | |
| 3258 \ | |
| 3259 product(bool, DTraceAllocProbes, false, \ | |
| 3260 "Enable dtrace probes for object allocation") \ | |
| 3261 \ | |
| 3262 product(bool, DTraceMonitorProbes, false, \ | |
| 3263 "Enable dtrace probes for monitor events") \ | |
| 3264 \ | |
| 3265 product(bool, RelaxAccessControlCheck, false, \ | |
| 3266 "Relax the access control checks in the verifier") \ | |
| 3267 \ | |
|
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3268 diagnostic(bool, PrintDTraceDOF, false, \ |
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3269 "Print the DTrace DOF passed to the system for JSDT probes") \ |
|
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3270 \ |
|
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|
3271 product(bool, UseVMInterruptibleIO, false, \ |
| 0 | 3272 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
|
449
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3273 "EINTR for I/O operations results in OS_INTRPT. The default value"\ |
|
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3274 " of this flag is true for JDK 6 and earliers") |
| 0 | 3275 |
| 3276 | |
| 3277 /* | |
| 3278 * Macros for factoring of globals | |
| 3279 */ | |
| 3280 | |
| 3281 // Interface macros | |
| 3282 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
| 3283 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
| 3284 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
|
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3285 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
| 0 | 3286 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
| 3287 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
| 3288 #ifdef PRODUCT | |
| 3289 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
| 3290 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
| 3291 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
| 3292 #else | |
| 3293 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
| 3294 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
| 3295 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
| 3296 #endif | |
|
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3297 // Special LP64 flags, product only needed for now. |
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3298 #ifdef _LP64 |
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3299 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
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3300 #else |
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3301 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; |
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3302 #endif // _LP64 |
| 0 | 3303 |
| 3304 // Implementation macros | |
| 3305 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
| 3306 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
| 3307 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
|
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3308 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
| 0 | 3309 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
| 3310 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
| 3311 #ifdef PRODUCT | |
| 3312 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
| 3313 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
| 3314 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
| 3315 #else | |
| 3316 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
| 3317 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
| 3318 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
| 3319 #endif | |
|
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3320 #ifdef _LP64 |
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3321 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
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3322 #else |
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3323 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
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3324 #endif // _LP64 |
| 0 | 3325 |
|
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3326 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 | 3327 |
| 3328 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) |