108 // Default and minimum StringTable and SymbolTable size values
109 // Must be powers of 2
110 const size_t defaultStringTableSize = NOT_LP64(1024) LP64_ONLY(65536);
111 const size_t minimumStringTableSize = 128;
112 const size_t defaultSymbolTableSize = 32768; // 2^15
113 const size_t minimumSymbolTableSize = 1024;
114
115 #ifdef _LP64
116 #define LP64_RUNTIME_FLAGS(develop, \
117 develop_pd, \
118 product, \
119 product_pd, \
120 notproduct, \
121 range, \
122 constraint) \
123 \
124 product(bool, UseCompressedOops, false, \
125 "Use 32-bit object references in 64-bit VM. " \
126 "lp64_product means flag is always constant in 32 bit VM") \
127 \
128 product(bool, UseCompressedClassPointers, false, \
129 "Use 32-bit class pointers in 64-bit VM. " \
130 "lp64_product means flag is always constant in 32 bit VM") \
131 \
132 product(int, ObjectAlignmentInBytes, 8, \
133 "Default object alignment in bytes, 8 is minimum") \
134 range(8, 256) \
135 constraint(ObjectAlignmentInBytesConstraintFunc, AtParse)
136
137 #else
138 // !_LP64
139
140 #define LP64_RUNTIME_FLAGS(develop, \
141 develop_pd, \
142 product, \
143 product_pd, \
144 notproduct, \
145 range, \
146 constraint)
147 const bool UseCompressedOops = false;
148 const bool UseCompressedClassPointers = false;
1049 product(ccstr, ErrorFile, NULL, \
1050 "If an error occurs, save the error data to this file " \
1051 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
1052 \
1053 product(bool, ExtensiveErrorReports, \
1054 PRODUCT_ONLY(false) NOT_PRODUCT(true), \
1055 "Error reports are more extensive.") \
1056 \
1057 product(bool, DisplayVMOutputToStderr, false, \
1058 "If DisplayVMOutput is true, display all VM output to stderr") \
1059 \
1060 product(bool, DisplayVMOutputToStdout, false, \
1061 "If DisplayVMOutput is true, display all VM output to stdout") \
1062 \
1063 product(bool, ErrorFileToStderr, false, \
1064 "If true, error data is printed to stderr instead of a file") \
1065 \
1066 product(bool, ErrorFileToStdout, false, \
1067 "If true, error data is printed to stdout instead of a file") \
1068 \
1069 develop(bool, UseHeavyMonitors, false, \
1070 "(Deprecated) Use heavyweight instead of lightweight Java " \
1071 "monitors") \
1072 \
1073 develop(bool, VerifyHeavyMonitors, false, \
1074 "Checks that no stack locking happens when using " \
1075 "+UseHeavyMonitors") \
1076 \
1077 product(bool, PrintStringTableStatistics, false, \
1078 "print statistics about the StringTable and SymbolTable") \
1079 \
1080 product(bool, VerifyStringTableAtExit, false, DIAGNOSTIC, \
1081 "verify StringTable contents at exit") \
1082 \
1083 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
1084 "print histogram of the symbol table") \
1085 \
1086 product(ccstr, AbortVMOnException, NULL, DIAGNOSTIC, \
1087 "Call fatal if this exception is thrown. Example: " \
1088 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
1089 \
1406 develop(intx, InlineThrowCount, 50, \
1407 "Force inlining of interpreted methods that throw this often") \
1408 range(0, max_jint) \
1409 \
1410 develop(intx, InlineThrowMaxSize, 200, \
1411 "Force inlining of throwing methods smaller than this") \
1412 range(0, max_jint) \
1413 \
1414 product(size_t, MetaspaceSize, NOT_LP64(16 * M) LP64_ONLY(21 * M), \
1415 "Initial threshold (in bytes) at which a garbage collection " \
1416 "is done to reduce Metaspace usage") \
1417 constraint(MetaspaceSizeConstraintFunc,AfterErgo) \
1418 \
1419 product(size_t, MaxMetaspaceSize, max_uintx, \
1420 "Maximum size of Metaspaces (in bytes)") \
1421 constraint(MaxMetaspaceSizeConstraintFunc,AfterErgo) \
1422 \
1423 product(size_t, CompressedClassSpaceSize, 1*G, \
1424 "Maximum size of class area in Metaspace when compressed " \
1425 "class pointers are used") \
1426 range(1*M, 3*G) \
1427 \
1428 develop(size_t, CompressedClassSpaceBaseAddress, 0, \
1429 "Force the class space to be allocated at this address or " \
1430 "fails VM initialization (requires -Xshare=off.") \
1431 \
1432 product(ccstr, MetaspaceReclaimPolicy, "balanced", \
1433 "options: balanced, aggressive, none") \
1434 \
1435 product(bool, PrintMetaspaceStatisticsAtExit, false, DIAGNOSTIC, \
1436 "Print metaspace statistics upon VM exit.") \
1437 \
1438 develop(bool, MetaspaceGuardAllocations, false, \
1439 "Metapace allocations are guarded.") \
1440 \
1441 product(uintx, MinHeapFreeRatio, 40, MANAGEABLE, \
1442 "The minimum percentage of heap free after GC to avoid expansion."\
1443 " For most GCs this applies to the old generation. In G1 and" \
1444 " ParallelGC it applies to the whole heap.") \
1445 range(0, 100) \
1446 constraint(MinHeapFreeRatioConstraintFunc,AfterErgo) \
1447 \
1448 product(uintx, MaxHeapFreeRatio, 70, MANAGEABLE, \
2039 JFR_ONLY(product(ccstr, FlightRecorderOptions, NULL, \
2040 "Flight Recorder options")) \
2041 \
2042 JFR_ONLY(product(ccstr, StartFlightRecording, NULL, \
2043 "Start flight recording with options")) \
2044 \
2045 product(bool, UseFastUnorderedTimeStamps, false, EXPERIMENTAL, \
2046 "Use platform unstable time where supported for timestamps only") \
2047 \
2048 product(bool, UseEmptySlotsInSupers, true, \
2049 "Allow allocating fields in empty slots of super-classes") \
2050 \
2051 product(bool, DeoptimizeNMethodBarriersALot, false, DIAGNOSTIC, \
2052 "Make nmethod barriers deoptimise a lot.") \
2053 \
2054 develop(bool, VerifyCrossModifyFence, \
2055 false AARCH64_ONLY(DEBUG_ONLY(||true)), \
2056 "Mark all threads after a safepoint, and clear on a modify " \
2057 "fence. Add cleanliness checks.") \
2058 \
2059 develop(bool, TraceOptimizedUpcallStubs, false, \
2060 "Trace optimized upcall stub generation") \
2061
2062 // end of RUNTIME_FLAGS
2063
2064 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
2065 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
2066 DECLARE_FLAGS(RUNTIME_FLAGS)
2067 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
2068
2069 #endif // SHARE_RUNTIME_GLOBALS_HPP
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108 // Default and minimum StringTable and SymbolTable size values
109 // Must be powers of 2
110 const size_t defaultStringTableSize = NOT_LP64(1024) LP64_ONLY(65536);
111 const size_t minimumStringTableSize = 128;
112 const size_t defaultSymbolTableSize = 32768; // 2^15
113 const size_t minimumSymbolTableSize = 1024;
114
115 #ifdef _LP64
116 #define LP64_RUNTIME_FLAGS(develop, \
117 develop_pd, \
118 product, \
119 product_pd, \
120 notproduct, \
121 range, \
122 constraint) \
123 \
124 product(bool, UseCompressedOops, false, \
125 "Use 32-bit object references in 64-bit VM. " \
126 "lp64_product means flag is always constant in 32 bit VM") \
127 \
128 product(bool, UseCompressedClassPointers, true, \
129 "Use 32-bit class pointers in 64-bit VM. " \
130 "lp64_product means flag is always constant in 32 bit VM") \
131 \
132 product(int, ObjectAlignmentInBytes, 8, \
133 "Default object alignment in bytes, 8 is minimum") \
134 range(8, 256) \
135 constraint(ObjectAlignmentInBytesConstraintFunc, AtParse)
136
137 #else
138 // !_LP64
139
140 #define LP64_RUNTIME_FLAGS(develop, \
141 develop_pd, \
142 product, \
143 product_pd, \
144 notproduct, \
145 range, \
146 constraint)
147 const bool UseCompressedOops = false;
148 const bool UseCompressedClassPointers = false;
1049 product(ccstr, ErrorFile, NULL, \
1050 "If an error occurs, save the error data to this file " \
1051 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
1052 \
1053 product(bool, ExtensiveErrorReports, \
1054 PRODUCT_ONLY(false) NOT_PRODUCT(true), \
1055 "Error reports are more extensive.") \
1056 \
1057 product(bool, DisplayVMOutputToStderr, false, \
1058 "If DisplayVMOutput is true, display all VM output to stderr") \
1059 \
1060 product(bool, DisplayVMOutputToStdout, false, \
1061 "If DisplayVMOutput is true, display all VM output to stdout") \
1062 \
1063 product(bool, ErrorFileToStderr, false, \
1064 "If true, error data is printed to stderr instead of a file") \
1065 \
1066 product(bool, ErrorFileToStdout, false, \
1067 "If true, error data is printed to stdout instead of a file") \
1068 \
1069 product(bool, UseHeavyMonitors, false, DIAGNOSTIC, \
1070 "(Deprecated) Use heavyweight instead of lightweight Java " \
1071 "monitors") \
1072 \
1073 develop(bool, VerifyHeavyMonitors, false, \
1074 "Checks that no stack locking happens when using " \
1075 "+UseHeavyMonitors") \
1076 \
1077 product(bool, PrintStringTableStatistics, false, \
1078 "print statistics about the StringTable and SymbolTable") \
1079 \
1080 product(bool, VerifyStringTableAtExit, false, DIAGNOSTIC, \
1081 "verify StringTable contents at exit") \
1082 \
1083 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
1084 "print histogram of the symbol table") \
1085 \
1086 product(ccstr, AbortVMOnException, NULL, DIAGNOSTIC, \
1087 "Call fatal if this exception is thrown. Example: " \
1088 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
1089 \
1406 develop(intx, InlineThrowCount, 50, \
1407 "Force inlining of interpreted methods that throw this often") \
1408 range(0, max_jint) \
1409 \
1410 develop(intx, InlineThrowMaxSize, 200, \
1411 "Force inlining of throwing methods smaller than this") \
1412 range(0, max_jint) \
1413 \
1414 product(size_t, MetaspaceSize, NOT_LP64(16 * M) LP64_ONLY(21 * M), \
1415 "Initial threshold (in bytes) at which a garbage collection " \
1416 "is done to reduce Metaspace usage") \
1417 constraint(MetaspaceSizeConstraintFunc,AfterErgo) \
1418 \
1419 product(size_t, MaxMetaspaceSize, max_uintx, \
1420 "Maximum size of Metaspaces (in bytes)") \
1421 constraint(MaxMetaspaceSizeConstraintFunc,AfterErgo) \
1422 \
1423 product(size_t, CompressedClassSpaceSize, 1*G, \
1424 "Maximum size of class area in Metaspace when compressed " \
1425 "class pointers are used") \
1426 constraint(CompressedClassSpaceSizeConstraintFunc,AtParse) \
1427 \
1428 product(size_t, CompressedClassSpaceBaseAddress, 0, DIAGNOSTIC, \
1429 "Force the class space to be allocated at this address or " \
1430 "fails VM initialization (requires -Xshare=off.") \
1431 \
1432 product(ccstr, MetaspaceReclaimPolicy, "balanced", \
1433 "options: balanced, aggressive, none") \
1434 \
1435 product(bool, PrintMetaspaceStatisticsAtExit, false, DIAGNOSTIC, \
1436 "Print metaspace statistics upon VM exit.") \
1437 \
1438 develop(bool, MetaspaceGuardAllocations, false, \
1439 "Metapace allocations are guarded.") \
1440 \
1441 product(uintx, MinHeapFreeRatio, 40, MANAGEABLE, \
1442 "The minimum percentage of heap free after GC to avoid expansion."\
1443 " For most GCs this applies to the old generation. In G1 and" \
1444 " ParallelGC it applies to the whole heap.") \
1445 range(0, 100) \
1446 constraint(MinHeapFreeRatioConstraintFunc,AfterErgo) \
1447 \
1448 product(uintx, MaxHeapFreeRatio, 70, MANAGEABLE, \
2039 JFR_ONLY(product(ccstr, FlightRecorderOptions, NULL, \
2040 "Flight Recorder options")) \
2041 \
2042 JFR_ONLY(product(ccstr, StartFlightRecording, NULL, \
2043 "Start flight recording with options")) \
2044 \
2045 product(bool, UseFastUnorderedTimeStamps, false, EXPERIMENTAL, \
2046 "Use platform unstable time where supported for timestamps only") \
2047 \
2048 product(bool, UseEmptySlotsInSupers, true, \
2049 "Allow allocating fields in empty slots of super-classes") \
2050 \
2051 product(bool, DeoptimizeNMethodBarriersALot, false, DIAGNOSTIC, \
2052 "Make nmethod barriers deoptimise a lot.") \
2053 \
2054 develop(bool, VerifyCrossModifyFence, \
2055 false AARCH64_ONLY(DEBUG_ONLY(||true)), \
2056 "Mark all threads after a safepoint, and clear on a modify " \
2057 "fence. Add cleanliness checks.") \
2058 \
2059 product(bool, HeapObjectStats, false, DIAGNOSTIC, \
2060 "Enable gathering of heap object statistics") \
2061 \
2062 product(size_t, HeapObjectStatsSamplingInterval, 500, DIAGNOSTIC, \
2063 "Heap object statistics sampling interval (ms)") \
2064 \
2065 develop(bool, TraceOptimizedUpcallStubs, false, \
2066 "Trace optimized upcall stub generation") \
2067
2068 // end of RUNTIME_FLAGS
2069
2070 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
2071 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
2072 DECLARE_FLAGS(RUNTIME_FLAGS)
2073 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
2074
2075 #endif // SHARE_RUNTIME_GLOBALS_HPP
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