< prev index next > src/hotspot/share/runtime/globals.hpp
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\
product(bool, UseCompressedClassPointers, true, \
"Use 32-bit class pointers in 64-bit VM. " \
"lp64_product means flag is always constant in 32 bit VM") \
\
+ /* Leyden */ \
+ product(bool, UseCompatibleCompressedOops, false, \
+ "Always use HeapBasedNarrowOop mode, so that AOT code can be " \
+ "always work regardless of runtime heap range") \
+ \
product(bool, UseCompactObjectHeaders, false, EXPERIMENTAL, \
"Use compact 64-bit object headers in 64-bit VM") \
\
product(int, ObjectAlignmentInBytes, 8, \
"Default object alignment in bytes, 8 is minimum") \
product(ccstrlist, ControlIntrinsic, "", DIAGNOSTIC, \
"Control intrinsics using a list of +/- (internal) names, " \
"separated by commas") \
constraint(ControlIntrinsicConstraintFunc,AfterErgo) \
\
+ develop(ccstr, AddRuntimeUpcallsNOP, nullptr, \
+ "Register a runtime upcall for testing." \
+ "Format is '[upcallType]:[methodFilter]'" \
+ "where upcallType is one of 'onMethodEntry', 'onMethodExit'" \
+ "and methodFilter is one of 'none', 'all'") \
+ \
develop(bool, TraceCallFixup, false, \
"Trace all call fixups") \
\
develop(bool, DeoptimizeALot, false, \
"Deoptimize at every exit from the runtime system") \
product(bool, LogVMOutput, false, DIAGNOSTIC, \
"Save VM output to LogFile") \
\
product(ccstr, LogFile, nullptr, DIAGNOSTIC, \
"If LogVMOutput or LogCompilation is on, save VM output to " \
! "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\
\
product(ccstr, ErrorFile, nullptr, \
"If an error occurs, save the error data to this file " \
! "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
\
product(bool, ExtensiveErrorReports, \
PRODUCT_ONLY(false) NOT_PRODUCT(true), \
"Error reports are more extensive.") \
\
product(bool, LogVMOutput, false, DIAGNOSTIC, \
"Save VM output to LogFile") \
\
product(ccstr, LogFile, nullptr, DIAGNOSTIC, \
"If LogVMOutput or LogCompilation is on, save VM output to " \
! "this file [default: ./hotspot_%p.log] (%p replaced with pidNNN)")\
\
product(ccstr, ErrorFile, nullptr, \
"If an error occurs, save the error data to this file " \
! "[default: ./hs_err_%p.log] (%p replaced with pidNNN)") \
\
product(bool, ExtensiveErrorReports, \
PRODUCT_ONLY(false) NOT_PRODUCT(true), \
"Error reports are more extensive.") \
\
\
product_pd(bool, PreferInterpreterNativeStubs, \
"Use always interpreter stubs for native methods invoked via " \
"interpreter") \
\
! develop(bool, CountBytecodes, false, \
"Count number of bytecodes executed") \
\
! develop(bool, PrintBytecodeHistogram, false, \
"Print histogram of the executed bytecodes") \
\
develop(bool, PrintBytecodePairHistogram, false, \
"Print histogram of the executed bytecode pairs") \
\
product(bool, PrintSignatureHandlers, false, DIAGNOSTIC, \
"Print code generated for native method signature handlers") \
\
product_pd(bool, PreferInterpreterNativeStubs, \
"Use always interpreter stubs for native methods invoked via " \
"interpreter") \
\
! product(bool, CountBytecodes, false, DIAGNOSTIC, \
"Count number of bytecodes executed") \
\
! product(bool, CountBytecodesPerThread, false, DIAGNOSTIC, \
+ "Count number of bytecodes executed per thread") \
+ \
+ product(bool, PrintBytecodeHistogram, false, DIAGNOSTIC, \
"Print histogram of the executed bytecodes") \
\
+ product(double, PrintBytecodeHistogramCutoff, 0.01, \
+ "Print cutoff for histogram of the executed bytecodes") \
+ range(0.0, 100.0) \
+ \
develop(bool, PrintBytecodePairHistogram, false, \
"Print histogram of the executed bytecode pairs") \
\
product(bool, PrintSignatureHandlers, false, DIAGNOSTIC, \
"Print code generated for native method signature handlers") \
product(intx, ProfileMaturityPercentage, 20, \
"number of method invocations/branches (expressed as % of " \
"CompileThreshold) before using the method's profile") \
range(0, 100) \
\
+ product(bool, ForceProfiling, false, DIAGNOSTIC, \
+ "Eagerly allocate MDOs") \
+ \
product(bool, PrintMethodData, false, DIAGNOSTIC, \
"Print the results of +ProfileInterpreter at end of run") \
\
develop(bool, VerifyDataPointer, trueInDebug, \
"Verify the method data pointer during interpreter profiling") \
constraint(PerfDataSamplingIntervalFunc, AfterErgo) \
\
product(bool, PerfDisableSharedMem, false, \
"Store performance data in standard memory") \
\
! product(int, PerfDataMemorySize, 32*K, \
"Size of performance data memory region. Will be rounded " \
"up to a multiple of the native os page size.") \
range(128, 32*64*K) \
\
product(int, PerfMaxStringConstLength, 1024, \
constraint(PerfDataSamplingIntervalFunc, AfterErgo) \
\
product(bool, PerfDisableSharedMem, false, \
"Store performance data in standard memory") \
\
! product(int, PerfDataMemorySize, 64*K, \
"Size of performance data memory region. Will be rounded " \
"up to a multiple of the native os page size.") \
range(128, 32*64*K) \
\
product(int, PerfMaxStringConstLength, 1024, \
"the platform supports that. Lower values will reclaim memory " \
"more eagerly at the cost of higher overhead. A value of 0 " \
"(default) disables native heap trimming.") \
range(0, UINT_MAX) \
\
+ product(bool, ProfileVMLocks, false, DIAGNOSTIC, \
+ "Profile VM locks usage on main thread") \
+ \
+ product(bool, ProfileVMCalls, false, DIAGNOSTIC, \
+ "Profile VM calls on main thread") \
+ \
+ product(bool, ProfileVMOps, true, DIAGNOSTIC, \
+ "Profile VM operations on main thread") \
+ \
+ product(bool, ProfileRuntimeCalls, false, DIAGNOSTIC, \
+ "Profile calls into VM runtime on main thread") \
+ \
develop(bool, SimulateFullAddressSpace, false, \
"Simulates a very populated, fragmented address space; no " \
"targeted reservations will succeed.") \
\
product(bool, ProfileExceptionHandlers, true, \
product(bool, AlwaysRecordEvolDependencies, true, EXPERIMENTAL, \
"Unconditionally record nmethod dependencies on class " \
"rewriting/transformation independently of the JVMTI " \
"can_{retransform/redefine}_classes capabilities.") \
\
+ product(bool, TraceThreadTime, false, \
+ "Enable tracing of thread time in Perf counters") \
+ \
product(bool, UseSecondarySupersCache, true, DIAGNOSTIC, \
"Use secondary supers cache during subtype checks.") \
\
product(bool, UseSecondarySupersTable, false, DIAGNOSTIC, \
"Use hash table to lookup secondary supers.") \
\
product(bool, UseThreadsLockThrottleLock, true, DIAGNOSTIC, \
"Use an extra lock during Thread start and exit to alleviate" \
"contention on Threads_lock.") \
+
// end of RUNTIME_FLAGS
DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
DECLARE_ARCH_FLAGS(ARCH_FLAGS)
DECLARE_FLAGS(RUNTIME_FLAGS)
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