834 \ 835 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 836 "Threshold of number of revocations per type to permanently " \ 837 "revoke biases of all objects in the heap of that type") \ 838 range(0, max_intx) \ 839 constraint(BiasedLockingBulkRevokeThresholdFunc,AfterErgo) \ 840 \ 841 product(intx, BiasedLockingDecayTime, 25000, \ 842 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 843 "type after previous bulk rebias") \ 844 range(500, max_intx) \ 845 constraint(BiasedLockingDecayTimeFunc,AfterErgo) \ 846 \ 847 product(bool, ExitOnOutOfMemoryError, false, \ 848 "JVM exits on the first occurrence of an out-of-memory error") \ 849 \ 850 product(bool, CrashOnOutOfMemoryError, false, \ 851 "JVM aborts, producing an error log and core/mini dump, on the " \ 852 "first occurrence of an out-of-memory error") \ 853 \ 854 /* tracing */ \ 855 \ 856 develop(bool, StressRewriter, false, \ 857 "Stress linktime bytecode rewriting") \ 858 \ 859 product(ccstr, TraceJVMTI, NULL, \ 860 "Trace flags for JVMTI functions and events") \ 861 \ 862 /* This option can change an EMCP method into an obsolete method. */ \ 863 /* This can affect tests that except specific methods to be EMCP. */ \ 864 /* This option should be used with caution. */ \ 865 product(bool, StressLdcRewrite, false, \ 866 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 867 \ 868 /* change to false by default sometime after Mustang */ \ 869 product(bool, VerifyMergedCPBytecodes, true, \ 870 "Verify bytecodes after RedefineClasses constant pool merging") \ 871 \ 872 product(bool, AllowRedefinitionToAddDeleteMethods, false, \ 873 "(Deprecated) Allow redefinition to add and delete private " \ 2161 "Don't compile methods larger than this if " \ 2162 "+DontCompileHugeMethods") \ 2163 \ 2164 /* Properties for Java libraries */ \ 2165 \ 2166 product(uint64_t, MaxDirectMemorySize, 0, \ 2167 "Maximum total size of NIO direct-buffer allocations") \ 2168 range(0, max_jlong) \ 2169 \ 2170 /* Flags used for temporary code during development */ \ 2171 \ 2172 diagnostic(bool, UseNewCode, false, \ 2173 "Testing Only: Use the new version while testing") \ 2174 \ 2175 diagnostic(bool, UseNewCode2, false, \ 2176 "Testing Only: Use the new version while testing") \ 2177 \ 2178 diagnostic(bool, UseNewCode3, false, \ 2179 "Testing Only: Use the new version while testing") \ 2180 \ 2181 /* flags for performance data collection */ \ 2182 \ 2183 product(bool, UsePerfData, true, \ 2184 "Flag to disable jvmstat instrumentation for performance testing "\ 2185 "and problem isolation purposes") \ 2186 \ 2187 product(bool, PerfDataSaveToFile, false, \ 2188 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 2189 \ 2190 product(ccstr, PerfDataSaveFile, NULL, \ 2191 "Save PerfData memory to the specified absolute pathname. " \ 2192 "The string %p in the file name (if present) " \ 2193 "will be replaced by pid") \ 2194 \ 2195 product(intx, PerfDataSamplingInterval, 50, \ 2196 "Data sampling interval (in milliseconds)") \ 2197 range(PeriodicTask::min_interval, max_jint) \ 2198 constraint(PerfDataSamplingIntervalFunc, AfterErgo) \ 2199 \ 2200 product(bool, PerfDisableSharedMem, false, \ 2409 "Check (3) is available only in debug builds.") \ 2410 \ 2411 diagnostic_pd(intx, InitArrayShortSize, \ 2412 "Threshold small size (in bytes) for clearing arrays. " \ 2413 "Anything this size or smaller may get converted to discrete " \ 2414 "scalar stores.") \ 2415 range(0, max_intx) \ 2416 constraint(InitArrayShortSizeConstraintFunc, AfterErgo) \ 2417 \ 2418 diagnostic(bool, CompilerDirectivesIgnoreCompileCommands, false, \ 2419 "Disable backwards compatibility for compile commands.") \ 2420 \ 2421 diagnostic(bool, CompilerDirectivesPrint, false, \ 2422 "Print compiler directives on installation.") \ 2423 diagnostic(int, CompilerDirectivesLimit, 50, \ 2424 "Limit on number of compiler directives.") \ 2425 \ 2426 product(ccstr, AllocateHeapAt, NULL, \ 2427 "Path to the directoy where a temporary file will be created " \ 2428 "to use as the backing store for Java Heap.") \ 2429 \ 2430 experimental(ccstr, AllocateOldGenAt, NULL, \ 2431 "Path to the directoy where a temporary file will be " \ 2432 "created to use as the backing store for old generation." \ 2433 "File of size Xmx is pre-allocated for performance reason, so" \ 2434 "we need that much space available") \ 2435 \ 2436 develop(int, VerifyMetaspaceInterval, DEBUG_ONLY(500) NOT_DEBUG(0), \ 2437 "Run periodic metaspace verifications (0 - none, " \ 2438 "1 - always, >1 every nth interval)") \ 2439 \ 2440 diagnostic(bool, ShowRegistersOnAssert, true, \ 2441 "On internal errors, include registers in error report.") \ 2442 \ 2443 experimental(bool, UseSwitchProfiling, true, \ 2444 "leverage profiling for table/lookup switch") \ 2445 \ 2446 JFR_ONLY(product(bool, FlightRecorder, false, \ 2447 "(Deprecated) Enable Flight Recorder")) \ 2448 \ | 834 \ 835 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ 836 "Threshold of number of revocations per type to permanently " \ 837 "revoke biases of all objects in the heap of that type") \ 838 range(0, max_intx) \ 839 constraint(BiasedLockingBulkRevokeThresholdFunc,AfterErgo) \ 840 \ 841 product(intx, BiasedLockingDecayTime, 25000, \ 842 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ 843 "type after previous bulk rebias") \ 844 range(500, max_intx) \ 845 constraint(BiasedLockingDecayTimeFunc,AfterErgo) \ 846 \ 847 product(bool, ExitOnOutOfMemoryError, false, \ 848 "JVM exits on the first occurrence of an out-of-memory error") \ 849 \ 850 product(bool, CrashOnOutOfMemoryError, false, \ 851 "JVM aborts, producing an error log and core/mini dump, on the " \ 852 "first occurrence of an out-of-memory error") \ 853 \ 854 product(bool, DetectLocksInCompiledFrames, true, \ 855 "Detect monitors in continuation compiled frames") \ 856 \ 857 /* tracing */ \ 858 \ 859 develop(bool, StressRewriter, false, \ 860 "Stress linktime bytecode rewriting") \ 861 \ 862 product(ccstr, TraceJVMTI, NULL, \ 863 "Trace flags for JVMTI functions and events") \ 864 \ 865 /* This option can change an EMCP method into an obsolete method. */ \ 866 /* This can affect tests that except specific methods to be EMCP. */ \ 867 /* This option should be used with caution. */ \ 868 product(bool, StressLdcRewrite, false, \ 869 "Force ldc -> ldc_w rewrite during RedefineClasses") \ 870 \ 871 /* change to false by default sometime after Mustang */ \ 872 product(bool, VerifyMergedCPBytecodes, true, \ 873 "Verify bytecodes after RedefineClasses constant pool merging") \ 874 \ 875 product(bool, AllowRedefinitionToAddDeleteMethods, false, \ 876 "(Deprecated) Allow redefinition to add and delete private " \ 2164 "Don't compile methods larger than this if " \ 2165 "+DontCompileHugeMethods") \ 2166 \ 2167 /* Properties for Java libraries */ \ 2168 \ 2169 product(uint64_t, MaxDirectMemorySize, 0, \ 2170 "Maximum total size of NIO direct-buffer allocations") \ 2171 range(0, max_jlong) \ 2172 \ 2173 /* Flags used for temporary code during development */ \ 2174 \ 2175 diagnostic(bool, UseNewCode, false, \ 2176 "Testing Only: Use the new version while testing") \ 2177 \ 2178 diagnostic(bool, UseNewCode2, false, \ 2179 "Testing Only: Use the new version while testing") \ 2180 \ 2181 diagnostic(bool, UseNewCode3, false, \ 2182 "Testing Only: Use the new version while testing") \ 2183 \ 2184 diagnostic(intx, ContPerfTest, 1000, \ 2185 "Testing Only: Use the new version while testing") \ 2186 \ 2187 /* flags for performance data collection */ \ 2188 \ 2189 product(bool, UsePerfData, true, \ 2190 "Flag to disable jvmstat instrumentation for performance testing "\ 2191 "and problem isolation purposes") \ 2192 \ 2193 product(bool, PerfDataSaveToFile, false, \ 2194 "Save PerfData memory to hsperfdata_<pid> file on exit") \ 2195 \ 2196 product(ccstr, PerfDataSaveFile, NULL, \ 2197 "Save PerfData memory to the specified absolute pathname. " \ 2198 "The string %p in the file name (if present) " \ 2199 "will be replaced by pid") \ 2200 \ 2201 product(intx, PerfDataSamplingInterval, 50, \ 2202 "Data sampling interval (in milliseconds)") \ 2203 range(PeriodicTask::min_interval, max_jint) \ 2204 constraint(PerfDataSamplingIntervalFunc, AfterErgo) \ 2205 \ 2206 product(bool, PerfDisableSharedMem, false, \ 2415 "Check (3) is available only in debug builds.") \ 2416 \ 2417 diagnostic_pd(intx, InitArrayShortSize, \ 2418 "Threshold small size (in bytes) for clearing arrays. " \ 2419 "Anything this size or smaller may get converted to discrete " \ 2420 "scalar stores.") \ 2421 range(0, max_intx) \ 2422 constraint(InitArrayShortSizeConstraintFunc, AfterErgo) \ 2423 \ 2424 diagnostic(bool, CompilerDirectivesIgnoreCompileCommands, false, \ 2425 "Disable backwards compatibility for compile commands.") \ 2426 \ 2427 diagnostic(bool, CompilerDirectivesPrint, false, \ 2428 "Print compiler directives on installation.") \ 2429 diagnostic(int, CompilerDirectivesLimit, 50, \ 2430 "Limit on number of compiler directives.") \ 2431 \ 2432 product(ccstr, AllocateHeapAt, NULL, \ 2433 "Path to the directoy where a temporary file will be created " \ 2434 "to use as the backing store for Java Heap.") \ 2435 \ 2436 product(bool, LoomGenCode, true, \ 2437 "Generate oopmap code") \ 2438 \ 2439 product(bool, UseContinuationLazyCopy, true, \ 2440 "Use lazy-copy in continuations") \ 2441 \ 2442 product(bool, UseContinuationStrong, true, \ 2443 "The weak keepalive is considered strong on stack") \ 2444 \ 2445 product(bool, UseContinuationFastPath, true, \ 2446 "Use fast-path frame walking in continuations") \ 2447 \ 2448 experimental(ccstr, AllocateOldGenAt, NULL, \ 2449 "Path to the directoy where a temporary file will be " \ 2450 "created to use as the backing store for old generation." \ 2451 "File of size Xmx is pre-allocated for performance reason, so" \ 2452 "we need that much space available") \ 2453 \ 2454 develop(int, VerifyMetaspaceInterval, DEBUG_ONLY(500) NOT_DEBUG(0), \ 2455 "Run periodic metaspace verifications (0 - none, " \ 2456 "1 - always, >1 every nth interval)") \ 2457 \ 2458 diagnostic(bool, ShowRegistersOnAssert, true, \ 2459 "On internal errors, include registers in error report.") \ 2460 \ 2461 experimental(bool, UseSwitchProfiling, true, \ 2462 "leverage profiling for table/lookup switch") \ 2463 \ 2464 JFR_ONLY(product(bool, FlightRecorder, false, \ 2465 "(Deprecated) Enable Flight Recorder")) \ 2466 \ |