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 range, \
121 constraint) \
122 \
123 product(bool, UseCompressedOops, false, \
124 "Use 32-bit object references in 64-bit VM. " \
125 "lp64_product means flag is always constant in 32 bit VM") \
126 \
127 product(bool, UseCompressedClassPointers, true, \
128 "Use 32-bit class pointers in 64-bit VM. " \
129 "lp64_product means flag is always constant in 32 bit VM") \
130 \
131 product(int, ObjectAlignmentInBytes, 8, \
132 "Default object alignment in bytes, 8 is minimum") \
133 range(8, 256) \
134 constraint(ObjectAlignmentInBytesConstraintFunc, AtParse)
135
136 #else
137 // !_LP64
138
139 #define LP64_RUNTIME_FLAGS(develop, \
140 develop_pd, \
141 product, \
142 product_pd, \
143 range, \
144 constraint)
145 const bool UseCompressedOops = false;
146 const bool UseCompressedClassPointers = false;
147 const int ObjectAlignmentInBytes = 8;
148
149 #endif // _LP64
150
998 "Print all VM flags after argument and ergonomic processing") \
999 \
1000 develop(bool, PrintFlagsWithComments, false, \
1001 "Print all VM flags with default values and descriptions and " \
1002 "exit") \
1003 \
1004 product(bool, PrintFlagsRanges, false, \
1005 "Print VM flags and their ranges") \
1006 \
1007 product(bool, SerializeVMOutput, true, DIAGNOSTIC, \
1008 "Use a mutex to serialize output to tty and LogFile") \
1009 \
1010 product(bool, DisplayVMOutput, true, DIAGNOSTIC, \
1011 "Display all VM output on the tty, independently of LogVMOutput") \
1012 \
1013 product(bool, LogVMOutput, false, DIAGNOSTIC, \
1014 "Save VM output to LogFile") \
1015 \
1016 product(ccstr, LogFile, nullptr, DIAGNOSTIC, \
1017 "If LogVMOutput or LogCompilation is on, save VM output to " \
1018 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\
1019 \
1020 product(ccstr, ErrorFile, nullptr, \
1021 "If an error occurs, save the error data to this file " \
1022 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
1023 \
1024 product(bool, ExtensiveErrorReports, \
1025 PRODUCT_ONLY(false) NOT_PRODUCT(true), \
1026 "Error reports are more extensive.") \
1027 \
1028 product(bool, DisplayVMOutputToStderr, false, \
1029 "If DisplayVMOutput is true, display all VM output to stderr") \
1030 \
1031 product(bool, DisplayVMOutputToStdout, false, \
1032 "If DisplayVMOutput is true, display all VM output to stdout") \
1033 \
1034 product(bool, ErrorFileToStderr, false, \
1035 "If true, error data is printed to stderr instead of a file") \
1036 \
1037 product(bool, ErrorFileToStdout, false, \
1038 "If true, error data is printed to stdout instead of a file") \
1039 \
1040 develop(bool, VerifyHeavyMonitors, false, \
1041 "Checks that no stack locking happens when using " \
1042 "-XX:LockingMode=0 (LM_MONITOR)") \
1122 product(bool, UseInterpreter, true, \
1123 "Use interpreter for non-compiled methods") \
1124 \
1125 develop(bool, UseFastSignatureHandlers, true, \
1126 "Use fast signature handlers for native calls") \
1127 \
1128 product(bool, UseLoopCounter, true, \
1129 "Increment invocation counter on backward branch") \
1130 \
1131 product_pd(bool, UseOnStackReplacement, \
1132 "Use on stack replacement, calls runtime if invoc. counter " \
1133 "overflows in loop") \
1134 \
1135 develop(bool, TraceOnStackReplacement, false, \
1136 "Trace on stack replacement") \
1137 \
1138 product_pd(bool, PreferInterpreterNativeStubs, \
1139 "Use always interpreter stubs for native methods invoked via " \
1140 "interpreter") \
1141 \
1142 develop(bool, CountBytecodes, false, \
1143 "Count number of bytecodes executed") \
1144 \
1145 develop(bool, PrintBytecodeHistogram, false, \
1146 "Print histogram of the executed bytecodes") \
1147 \
1148 develop(bool, PrintBytecodePairHistogram, false, \
1149 "Print histogram of the executed bytecode pairs") \
1150 \
1151 product(bool, PrintSignatureHandlers, false, DIAGNOSTIC, \
1152 "Print code generated for native method signature handlers") \
1153 \
1154 develop(bool, VerifyOops, false, \
1155 "Do plausibility checks for oops") \
1156 \
1157 develop(bool, CheckUnhandledOops, false, \
1158 "Check for unhandled oops in VM code") \
1159 \
1160 develop(bool, VerifyJNIFields, trueInDebug, \
1161 "Verify jfieldIDs for instance fields") \
1162 \
1163 develop(bool, VerifyFPU, false, \
1164 "Verify FPU state (check for NaN's, etc.)") \
1165 \
1166 develop(bool, VerifyActivationFrameSize, false, \
1167 "Verify that activation frame didn't become smaller than its " \
1168 "minimal size") \
1169 \
1170 develop(bool, TraceFrequencyInlining, false, \
1171 "Trace frequency based inlining") \
1172 \
1173 develop_pd(bool, InlineIntrinsics, \
1174 "Use intrinsics in Interpreter that can be statically resolved") \
1175 \
1176 product_pd(bool, ProfileInterpreter, \
1177 "Profile at the bytecode level during interpretation") \
1178 \
1179 develop_pd(bool, ProfileTraps, \
1180 "Profile deoptimization traps at the bytecode level") \
1181 \
1182 product(intx, ProfileMaturityPercentage, 20, \
1183 "number of method invocations/branches (expressed as % of " \
1184 "CompileThreshold) before using the method's profile") \
1185 range(0, 100) \
1186 \
1187 product(bool, PrintMethodData, false, DIAGNOSTIC, \
1188 "Print the results of +ProfileInterpreter at end of run") \
1189 \
1190 develop(bool, VerifyDataPointer, trueInDebug, \
1191 "Verify the method data pointer during interpreter profiling") \
1192 \
1193 develop(bool, CrashGCForDumpingJavaThread, false, \
1194 "Manually make GC thread crash then dump java stack trace; " \
1195 "Test only") \
1196 \
1197 /* compilation */ \
1198 product(bool, UseCompiler, true, \
1199 "Use Just-In-Time compilation") \
1200 \
1201 product(bool, AlwaysCompileLoopMethods, false, \
1202 "When using recompilation, never interpret methods " \
1203 "containing loops") \
1204 \
1205 product(int, AllocatePrefetchStyle, 1, \
1206 "0 = no prefetch, " \
1704 product(bool, UsePerfData, true, \
1705 "Flag to disable jvmstat instrumentation for performance testing "\
1706 "and problem isolation purposes") \
1707 \
1708 product(bool, PerfDataSaveToFile, false, \
1709 "Save PerfData memory to hsperfdata_<pid> file on exit") \
1710 \
1711 product(ccstr, PerfDataSaveFile, nullptr, \
1712 "Save PerfData memory to the specified absolute pathname. " \
1713 "The string %p in the file name (if present) " \
1714 "will be replaced by pid") \
1715 \
1716 product(int, PerfDataSamplingInterval, 50, \
1717 "Data sampling interval (in milliseconds)") \
1718 range(PeriodicTask::min_interval, max_jint) \
1719 constraint(PerfDataSamplingIntervalFunc, AfterErgo) \
1720 \
1721 product(bool, PerfDisableSharedMem, false, \
1722 "Store performance data in standard memory") \
1723 \
1724 product(int, PerfDataMemorySize, 32*K, \
1725 "Size of performance data memory region. Will be rounded " \
1726 "up to a multiple of the native os page size.") \
1727 range(128, 32*64*K) \
1728 \
1729 product(int, PerfMaxStringConstLength, 1024, \
1730 "Maximum PerfStringConstant string length before truncation") \
1731 range(32, 32*K) \
1732 \
1733 product(bool, PerfAllowAtExitRegistration, false, \
1734 "Allow registration of atexit() methods") \
1735 \
1736 product(bool, PerfBypassFileSystemCheck, false, \
1737 "Bypass Win32 file system criteria checks (Windows Only)") \
1738 \
1739 product(int, UnguardOnExecutionViolation, 0, \
1740 "Unguard page and retry on no-execute fault (Win32 only) " \
1741 "0=off, 1=conservative, 2=aggressive") \
1742 range(0, 2) \
1743 \
1744 /* Serviceability Support */ \
1951 range(0, 2) \
1952 \
1953 product(bool, UseObjectMonitorTable, false, DIAGNOSTIC, \
1954 "With Lightweight Locking mode, use a table to record inflated " \
1955 "monitors rather than the first word of the object.") \
1956 \
1957 product(int, LightweightFastLockingSpins, 13, DIAGNOSTIC, \
1958 "Specifies the number of times lightweight fast locking will " \
1959 "attempt to CAS the markWord before inflating. Between each " \
1960 "CAS it will spin for exponentially more time, resulting in " \
1961 "a total number of spins on the order of O(2^value)") \
1962 range(1, 30) \
1963 \
1964 product(uint, TrimNativeHeapInterval, 0, \
1965 "Interval, in ms, at which the JVM will trim the native heap if " \
1966 "the platform supports that. Lower values will reclaim memory " \
1967 "more eagerly at the cost of higher overhead. A value of 0 " \
1968 "(default) disables native heap trimming.") \
1969 range(0, UINT_MAX) \
1970 \
1971 develop(bool, SimulateFullAddressSpace, false, \
1972 "Simulates a very populated, fragmented address space; no " \
1973 "targeted reservations will succeed.") \
1974 \
1975 product(bool, ProfileExceptionHandlers, true, \
1976 "Profile exception handlers") \
1977 \
1978 product(bool, AlwaysRecordEvolDependencies, true, EXPERIMENTAL, \
1979 "Unconditionally record nmethod dependencies on class " \
1980 "rewriting/transformation independently of the JVMTI " \
1981 "can_{retransform/redefine}_classes capabilities.") \
1982 \
1983 product(bool, UseSecondarySupersCache, true, DIAGNOSTIC, \
1984 "Use secondary supers cache during subtype checks.") \
1985 \
1986 product(bool, UseSecondarySupersTable, false, DIAGNOSTIC, \
1987 "Use hash table to lookup secondary supers.") \
1988 \
1989 product(bool, VerifySecondarySupers, false, DIAGNOSTIC, \
1990 "Check that linear and hashed secondary lookups return the same result.") \
1991 \
1992 product(bool, StressSecondarySupers, false, DIAGNOSTIC, \
1993 "Use a terrible hash function in order to generate many collisions.") \
1994
1995 // end of RUNTIME_FLAGS
1996
1997 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
1998 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
1999 DECLARE_FLAGS(RUNTIME_FLAGS)
2000 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
2001
2002 #endif // SHARE_RUNTIME_GLOBALS_HPP
|
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 range, \
121 constraint) \
122 \
123 product(bool, UseCompressedOops, false, \
124 "Use 32-bit object references in 64-bit VM. " \
125 "lp64_product means flag is always constant in 32 bit VM") \
126 \
127 product(bool, UseCompressedClassPointers, true, \
128 "Use 32-bit class pointers in 64-bit VM. " \
129 "lp64_product means flag is always constant in 32 bit VM") \
130 \
131 /* Leyden */ \
132 product(bool, UseCompatibleCompressedOops, false, \
133 "Always use HeapBasedNarrowOop mode, so that AOT code can be " \
134 "always work regardless of runtime heap range") \
135 \
136 product(int, ObjectAlignmentInBytes, 8, \
137 "Default object alignment in bytes, 8 is minimum") \
138 range(8, 256) \
139 constraint(ObjectAlignmentInBytesConstraintFunc, AtParse)
140
141 #else
142 // !_LP64
143
144 #define LP64_RUNTIME_FLAGS(develop, \
145 develop_pd, \
146 product, \
147 product_pd, \
148 range, \
149 constraint)
150 const bool UseCompressedOops = false;
151 const bool UseCompressedClassPointers = false;
152 const int ObjectAlignmentInBytes = 8;
153
154 #endif // _LP64
155
1003 "Print all VM flags after argument and ergonomic processing") \
1004 \
1005 develop(bool, PrintFlagsWithComments, false, \
1006 "Print all VM flags with default values and descriptions and " \
1007 "exit") \
1008 \
1009 product(bool, PrintFlagsRanges, false, \
1010 "Print VM flags and their ranges") \
1011 \
1012 product(bool, SerializeVMOutput, true, DIAGNOSTIC, \
1013 "Use a mutex to serialize output to tty and LogFile") \
1014 \
1015 product(bool, DisplayVMOutput, true, DIAGNOSTIC, \
1016 "Display all VM output on the tty, independently of LogVMOutput") \
1017 \
1018 product(bool, LogVMOutput, false, DIAGNOSTIC, \
1019 "Save VM output to LogFile") \
1020 \
1021 product(ccstr, LogFile, nullptr, DIAGNOSTIC, \
1022 "If LogVMOutput or LogCompilation is on, save VM output to " \
1023 "this file [default: ./hotspot_%p.log] (%p replaced with pidNNN)")\
1024 \
1025 product(ccstr, ErrorFile, nullptr, \
1026 "If an error occurs, save the error data to this file " \
1027 "[default: ./hs_err_%p.log] (%p replaced with pidNNN)") \
1028 \
1029 product(bool, ExtensiveErrorReports, \
1030 PRODUCT_ONLY(false) NOT_PRODUCT(true), \
1031 "Error reports are more extensive.") \
1032 \
1033 product(bool, DisplayVMOutputToStderr, false, \
1034 "If DisplayVMOutput is true, display all VM output to stderr") \
1035 \
1036 product(bool, DisplayVMOutputToStdout, false, \
1037 "If DisplayVMOutput is true, display all VM output to stdout") \
1038 \
1039 product(bool, ErrorFileToStderr, false, \
1040 "If true, error data is printed to stderr instead of a file") \
1041 \
1042 product(bool, ErrorFileToStdout, false, \
1043 "If true, error data is printed to stdout instead of a file") \
1044 \
1045 develop(bool, VerifyHeavyMonitors, false, \
1046 "Checks that no stack locking happens when using " \
1047 "-XX:LockingMode=0 (LM_MONITOR)") \
1127 product(bool, UseInterpreter, true, \
1128 "Use interpreter for non-compiled methods") \
1129 \
1130 develop(bool, UseFastSignatureHandlers, true, \
1131 "Use fast signature handlers for native calls") \
1132 \
1133 product(bool, UseLoopCounter, true, \
1134 "Increment invocation counter on backward branch") \
1135 \
1136 product_pd(bool, UseOnStackReplacement, \
1137 "Use on stack replacement, calls runtime if invoc. counter " \
1138 "overflows in loop") \
1139 \
1140 develop(bool, TraceOnStackReplacement, false, \
1141 "Trace on stack replacement") \
1142 \
1143 product_pd(bool, PreferInterpreterNativeStubs, \
1144 "Use always interpreter stubs for native methods invoked via " \
1145 "interpreter") \
1146 \
1147 product(bool, CountBytecodes, false, DIAGNOSTIC, \
1148 "Count number of bytecodes executed") \
1149 \
1150 product(bool, CountBytecodesPerThread, false, DIAGNOSTIC, \
1151 "Count number of bytecodes executed per thread") \
1152 \
1153 product(bool, PrintBytecodeHistogram, false, DIAGNOSTIC, \
1154 "Print histogram of the executed bytecodes") \
1155 \
1156 product(double, PrintBytecodeHistogramCutoff, 0.01, \
1157 "Print cutoff for histogram of the executed bytecodes") \
1158 range(0.0, 100.0) \
1159 \
1160 develop(bool, PrintBytecodePairHistogram, false, \
1161 "Print histogram of the executed bytecode pairs") \
1162 \
1163 product(bool, PrintSignatureHandlers, false, DIAGNOSTIC, \
1164 "Print code generated for native method signature handlers") \
1165 \
1166 develop(bool, VerifyOops, false, \
1167 "Do plausibility checks for oops") \
1168 \
1169 develop(bool, CheckUnhandledOops, false, \
1170 "Check for unhandled oops in VM code") \
1171 \
1172 develop(bool, VerifyJNIFields, trueInDebug, \
1173 "Verify jfieldIDs for instance fields") \
1174 \
1175 develop(bool, VerifyFPU, false, \
1176 "Verify FPU state (check for NaN's, etc.)") \
1177 \
1178 develop(bool, VerifyActivationFrameSize, false, \
1179 "Verify that activation frame didn't become smaller than its " \
1180 "minimal size") \
1181 \
1182 develop(bool, TraceFrequencyInlining, false, \
1183 "Trace frequency based inlining") \
1184 \
1185 develop_pd(bool, InlineIntrinsics, \
1186 "Use intrinsics in Interpreter that can be statically resolved") \
1187 \
1188 product_pd(bool, ProfileInterpreter, \
1189 "Profile at the bytecode level during interpretation") \
1190 \
1191 develop_pd(bool, ProfileTraps, \
1192 "Profile deoptimization traps at the bytecode level") \
1193 \
1194 product(intx, ProfileMaturityPercentage, 20, \
1195 "number of method invocations/branches (expressed as % of " \
1196 "CompileThreshold) before using the method's profile") \
1197 range(0, 100) \
1198 \
1199 product(bool, ForceProfiling, false, DIAGNOSTIC, \
1200 "Eagerly allocate MDOs") \
1201 \
1202 product(bool, PrintMethodData, false, DIAGNOSTIC, \
1203 "Print the results of +ProfileInterpreter at end of run") \
1204 \
1205 develop(bool, VerifyDataPointer, trueInDebug, \
1206 "Verify the method data pointer during interpreter profiling") \
1207 \
1208 develop(bool, CrashGCForDumpingJavaThread, false, \
1209 "Manually make GC thread crash then dump java stack trace; " \
1210 "Test only") \
1211 \
1212 /* compilation */ \
1213 product(bool, UseCompiler, true, \
1214 "Use Just-In-Time compilation") \
1215 \
1216 product(bool, AlwaysCompileLoopMethods, false, \
1217 "When using recompilation, never interpret methods " \
1218 "containing loops") \
1219 \
1220 product(int, AllocatePrefetchStyle, 1, \
1221 "0 = no prefetch, " \
1719 product(bool, UsePerfData, true, \
1720 "Flag to disable jvmstat instrumentation for performance testing "\
1721 "and problem isolation purposes") \
1722 \
1723 product(bool, PerfDataSaveToFile, false, \
1724 "Save PerfData memory to hsperfdata_<pid> file on exit") \
1725 \
1726 product(ccstr, PerfDataSaveFile, nullptr, \
1727 "Save PerfData memory to the specified absolute pathname. " \
1728 "The string %p in the file name (if present) " \
1729 "will be replaced by pid") \
1730 \
1731 product(int, PerfDataSamplingInterval, 50, \
1732 "Data sampling interval (in milliseconds)") \
1733 range(PeriodicTask::min_interval, max_jint) \
1734 constraint(PerfDataSamplingIntervalFunc, AfterErgo) \
1735 \
1736 product(bool, PerfDisableSharedMem, false, \
1737 "Store performance data in standard memory") \
1738 \
1739 product(int, PerfDataMemorySize, 64*K, \
1740 "Size of performance data memory region. Will be rounded " \
1741 "up to a multiple of the native os page size.") \
1742 range(128, 32*64*K) \
1743 \
1744 product(int, PerfMaxStringConstLength, 1024, \
1745 "Maximum PerfStringConstant string length before truncation") \
1746 range(32, 32*K) \
1747 \
1748 product(bool, PerfAllowAtExitRegistration, false, \
1749 "Allow registration of atexit() methods") \
1750 \
1751 product(bool, PerfBypassFileSystemCheck, false, \
1752 "Bypass Win32 file system criteria checks (Windows Only)") \
1753 \
1754 product(int, UnguardOnExecutionViolation, 0, \
1755 "Unguard page and retry on no-execute fault (Win32 only) " \
1756 "0=off, 1=conservative, 2=aggressive") \
1757 range(0, 2) \
1758 \
1759 /* Serviceability Support */ \
1966 range(0, 2) \
1967 \
1968 product(bool, UseObjectMonitorTable, false, DIAGNOSTIC, \
1969 "With Lightweight Locking mode, use a table to record inflated " \
1970 "monitors rather than the first word of the object.") \
1971 \
1972 product(int, LightweightFastLockingSpins, 13, DIAGNOSTIC, \
1973 "Specifies the number of times lightweight fast locking will " \
1974 "attempt to CAS the markWord before inflating. Between each " \
1975 "CAS it will spin for exponentially more time, resulting in " \
1976 "a total number of spins on the order of O(2^value)") \
1977 range(1, 30) \
1978 \
1979 product(uint, TrimNativeHeapInterval, 0, \
1980 "Interval, in ms, at which the JVM will trim the native heap if " \
1981 "the platform supports that. Lower values will reclaim memory " \
1982 "more eagerly at the cost of higher overhead. A value of 0 " \
1983 "(default) disables native heap trimming.") \
1984 range(0, UINT_MAX) \
1985 \
1986 product(bool, ProfileVMLocks, false, DIAGNOSTIC, \
1987 "Profile VM locks usage on main thread") \
1988 \
1989 product(bool, ProfileVMCalls, false, DIAGNOSTIC, \
1990 "Profile VM calls on main thread") \
1991 \
1992 product(bool, ProfileVMOps, true, DIAGNOSTIC, \
1993 "Profile VM operations on main thread") \
1994 \
1995 product(bool, ProfileRuntimeCalls, false, DIAGNOSTIC, \
1996 "Profile calls into VM runtime on main thread") \
1997 \
1998 develop(bool, SimulateFullAddressSpace, false, \
1999 "Simulates a very populated, fragmented address space; no " \
2000 "targeted reservations will succeed.") \
2001 \
2002 product(bool, ProfileExceptionHandlers, true, \
2003 "Profile exception handlers") \
2004 \
2005 product(bool, AlwaysRecordEvolDependencies, true, EXPERIMENTAL, \
2006 "Unconditionally record nmethod dependencies on class " \
2007 "rewriting/transformation independently of the JVMTI " \
2008 "can_{retransform/redefine}_classes capabilities.") \
2009 \
2010 product(bool, TraceThreadTime, false, \
2011 "Enable tracing of thread time in Perf counters") \
2012 \
2013 product(bool, UseSecondarySupersCache, true, DIAGNOSTIC, \
2014 "Use secondary supers cache during subtype checks.") \
2015 \
2016 product(bool, UseSecondarySupersTable, false, DIAGNOSTIC, \
2017 "Use hash table to lookup secondary supers.") \
2018 \
2019 product(bool, VerifySecondarySupers, false, DIAGNOSTIC, \
2020 "Check that linear and hashed secondary lookups return the same result.") \
2021 \
2022 product(bool, StressSecondarySupers, false, DIAGNOSTIC, \
2023 "Use a terrible hash function in order to generate many collisions.") \
2024
2025
2026 // end of RUNTIME_FLAGS
2027
2028 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
2029 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
2030 DECLARE_FLAGS(RUNTIME_FLAGS)
2031 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
2032
2033 #endif // SHARE_RUNTIME_GLOBALS_HPP
|