/* * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. *
*/
// TODO -- currently, even if all JIT compilers are disabled, the following flags // are still available in HotSpot. This should eventually be fixed ...
#define COMPILER_FLAGS(develop, \
develop_pd, \
product, \
product_pd, \
notproduct, \
range, \
constraint) \
\ /* compiler interface */ \
\
develop(bool, CIPrintCompilerName, false, \ "when CIPrint is active, print the name of the active compiler") \
\
product(bool, CIPrintCompileQueue, false, DIAGNOSTIC, \ "display the contents of the compile queue whenever a " \ "compilation is enqueued") \
\
develop(bool, CIPrintRequests, false, \ "display every request for compilation") \
\
product(bool, CITime, false, \ "collect timing information for compilation") \
\
develop(bool, CITimeVerbose, false, \ "be more verbose in compilation timings") \
\
develop(bool, CITimeEach, false, \ "display timing information after each successful compilation") \
\
develop(bool, CICountOSR, false, \ "use a separate counter when assigning ids to osr compilations") \
\
develop(bool, CICountNative, false, \ "use a separate counter when assigning ids to native " \ "compilations") \
\
develop(bool, CICompileNatives, true, \ "compile native methods if supported by the compiler") \
\
develop_pd(bool, CICompileOSR, \ "compile on stack replacement methods if supported by the " \ "compiler") \
\
develop(bool, CIPrintMethodCodes, false, \ "print method bytecodes of the compiled code") \
\
develop(bool, CIPrintTypeFlow, false, \ "print the results of ciTypeFlow analysis") \
\
develop(bool, CITraceTypeFlow, false, \ "detailed per-bytecode tracing of ciTypeFlow analysis") \
\
product(bool, CICompilerCountPerCPU, false, \ "1 compiler thread for log(N CPUs)") \
\
notproduct(intx, CICrashAt, -1, \ "id of compilation to trigger assert in compiler thread for " \ "the purpose of testing, e.g. generation of replay data") \
\
notproduct(bool, CIObjectFactoryVerify, false, \ "enable potentially expensive verification in ciObjectFactory") \
\
develop(intx, CIStart, 0, \ "The id of the first compilation to permit") \
\
develop(intx, CIStop, max_jint, \ "The id of the last compilation to permit") \
\
develop(intx, CIStartOSR, 0, \ "The id of the first osr compilation to permit " \ "(CICountOSR must be on)") \
\
develop(intx, CIStopOSR, max_jint, \ "The id of the last osr compilation to permit " \ "(CICountOSR must be on)") \
\
develop(intx, CIBreakAtOSR, -1, \ "The id of osr compilation to break at") \
\
develop(intx, CIBreakAt, -1, \ "The id of compilation to break at") \
\ /* recompilation */ \
\
product(double, CompileThresholdScaling, 1.0, \ "Factor to control when first compilation happens " \ "(both with and without tiered compilation): " \ "values greater than 1.0 delay counter overflow, " \ "values between 0 and 1.0 rush counter overflow, " \ "value of 1.0 leaves compilation thresholds unchanged " \ "value of 0.0 is equivalent to -Xint. " \ "" \ "Flag can be set as per-method option. " \ "If a value is specified for a method, compilation thresholds " \ "for that method are scaled by both the value of the global flag "\ "and the value of the per-method flag.") \
range(0.0, DBL_MAX) \
\
product(intx, Tier0InvokeNotifyFreqLog, 7, \ "Interpreter (tier 0) invocation notification frequency") \
range(0, 30) \
\
product(intx, Tier2InvokeNotifyFreqLog, 11, \ "C1 without MDO (tier 2) invocation notification frequency") \
range(0, 30) \
\
product(intx, Tier3InvokeNotifyFreqLog, 10, \ "C1 with MDO profiling (tier 3) invocation notification " \ "frequency") \
range(0, 30) \
\
product(intx, Tier23InlineeNotifyFreqLog, 20, \ "Inlinee invocation (tiers 2 and 3) notification frequency") \
range(0, 30) \
\
product(intx, Tier0BackedgeNotifyFreqLog, 10, \ "Interpreter (tier 0) invocation notification frequency") \
range(0, 30) \
\
product(intx, Tier2BackedgeNotifyFreqLog, 14, \ "C1 without MDO (tier 2) invocation notification frequency") \
range(0, 30) \
\
product(intx, Tier3BackedgeNotifyFreqLog, 13, \ "C1 with MDO profiling (tier 3) invocation notification " \ "frequency") \
range(0, 30) \
\
product(intx, Tier2CompileThreshold, 0, \ "threshold at which tier 2 compilation is invoked") \
range(0, max_jint) \
\
product(intx, Tier2BackEdgeThreshold, 0, \ "Back edge threshold at which tier 2 compilation is invoked") \
range(0, max_jint) \
\
product(intx, Tier3InvocationThreshold, 200, \ "Compile if number of method invocations crosses this " \ "threshold") \
range(0, max_jint) \
\
product(intx, Tier3MinInvocationThreshold, 100, \ "Minimum invocation to compile at tier 3") \
range(0, max_jint) \
\
product(intx, Tier3CompileThreshold, 2000, \ "Threshold at which tier 3 compilation is invoked (invocation " \ "minimum must be satisfied)") \
range(0, max_jint) \
\
product(intx, Tier3BackEdgeThreshold, 60000, \ "Back edge threshold at which tier 3 OSR compilation is invoked") \
range(0, max_jint) \
\
product(intx, Tier4InvocationThreshold, 5000, \ "Compile if number of method invocations crosses this " \ "threshold") \
range(0, max_jint) \
\
product(intx, Tier4MinInvocationThreshold, 600, \ "Minimum invocation to compile at tier 4") \
range(0, max_jint) \
\
product(intx, Tier4CompileThreshold, 15000, \ "Threshold at which tier 4 compilation is invoked (invocation " \ "minimum must be satisfied)") \
range(0, max_jint) \
\
product(intx, Tier4BackEdgeThreshold, 40000, \ "Back edge threshold at which tier 4 OSR compilation is invoked") \
range(0, max_jint) \
\
product(intx, Tier0Delay, 20, DIAGNOSTIC, \ "If C2 queue size grows over this amount per compiler thread " \ "do not start profiling in the interpreter") \
range(0, max_jint) \
\
product(intx, TieredOldPercentage, 1000, DIAGNOSTIC, \ "Percentage over tier 3 thresholds after which a method is " \ "considered old (turns off parts of prioritization based on " \ "compile queue length)") \
range(0, max_jint) \
\
product(intx, Tier3DelayOn, 5, \ "If C2 queue size grows over this amount per compiler thread " \ "stop compiling at tier 3 and start compiling at tier 2") \
range(0, max_jint) \
\
product(intx, Tier3DelayOff, 2, \ "If C2 queue size is less than this amount per compiler thread " \ "allow methods compiled at tier 2 transition to tier 3") \
range(0, max_jint) \
\
product(intx, Tier3LoadFeedback, 5, \ "Tier 3 thresholds will increase twofold when C1 queue size " \ "reaches this amount per compiler thread") \
range(0, max_jint) \
\
product(intx, Tier4LoadFeedback, 3, \ "Tier 4 thresholds will increase twofold when C2 queue size " \ "reaches this amount per compiler thread") \
range(0, max_jint) \
\
product(intx, TieredCompileTaskTimeout, 50, \ "Kill compile task if method was not used within " \ "given timeout in milliseconds") \
range(0, max_intx) \
\
product(intx, TieredStopAtLevel, 4, \ "Stop at given compilation level") \
range(0, 4) \
\
product(intx, Tier0ProfilingStartPercentage, 200, \ "Start profiling in interpreter if the counters exceed the " \ "specified percentage of tier 3 thresholds") \
range(0, max_jint) \
\
product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ "Increase the compile threshold for C1 compilation if the code " \ "cache is filled by the specified percentage") \
range(0, 99) \
\
product(intx, TieredRateUpdateMinTime, 1, \ "Minimum rate sampling interval (in milliseconds)") \
range(0, max_intx) \
\
product(intx, TieredRateUpdateMaxTime, 25, \ "Maximum rate sampling interval (in milliseconds)") \
range(0, max_intx) \
\
product(ccstr, CompilationMode, "default", \ "Compilation modes: " \ "default: normal tiered compilation; " \ "quick-only: C1-only mode; " \ "high-only: C2/JVMCI-only mode; " \ "high-only-quick-internal: C2/JVMCI-only mode, " \ "with JVMCI compiler compiled with C1.") \
\
product(bool, PrintTieredEvents, false, \ "Print tiered events notifications") \
\
product_pd(intx, OnStackReplacePercentage, \ "NON_TIERED number of method invocations/branches (expressed as " \ "% of CompileThreshold) before (re-)compiling OSR code") \
constraint(OnStackReplacePercentageConstraintFunc, AfterErgo) \
\
product(intx, InterpreterProfilePercentage, 33, \ "NON_TIERED number of method invocations/branches (expressed as " \ "% of CompileThreshold) before profiling in the interpreter") \
range(0, 100) \
\ /* compiler directives */ \
\
product(ccstrlist, CompileOnly, "", \ "List of methods (pkg/class.name) to restrict compilation to") \
\
product(ccstr, CompileCommandFile, NULL, \ "Read compiler commands from this file [.hotspot_compiler]") \
\
product(ccstr, CompilerDirectivesFile, NULL, DIAGNOSTIC, \ "Read compiler directives from this file") \
\
product(ccstrlist, CompileCommand, "", \ "Prepend to .hotspot_compiler; e.g. log,java/lang/String.") \
\
product(bool, ReplayCompiles, false, DIAGNOSTIC, \ "Enable replay of compilations from ReplayDataFile") \
\
product(bool, ReplayReduce, false, EXPERIMENTAL, \ "Enable features to facilitate replay file reduction") \
\
product(ccstr, ReplayDataFile, NULL, \ "File containing compilation replay information" \ "[default: ./replay_pid%p.log] (%p replaced with pid)") \
\
product(ccstr, InlineDataFile, NULL, \ "File containing inlining replay information" \ "[default: ./inline_pid%p.log] (%p replaced with pid)") \
\
product(intx, ReplaySuppressInitializers, 2, DIAGNOSTIC, \ "Control handling of class initialization during replay: " \ "0 - don't do anything special; " \ "1 - treat all class initializers as empty; " \ "2 - treat class initializers for application classes as empty; " \ "3 - allow all class initializers to run during bootstrap but " \ " pretend they are empty after starting replay") \
range(0, 3) \
\
product(bool, ReplayIgnoreInitErrors, false, DIAGNOSTIC, \ "Ignore exceptions thrown during initialization for replay") \
\
product(bool, DumpReplayDataOnError, true, \ "Record replay data for crashing compiler threads") \
\
product(bool, CompilerDirectivesIgnoreCompileCommands, false, DIAGNOSTIC, \ "Disable backwards compatibility for compile commands.") \
\
product(bool, CompilerDirectivesPrint, false, DIAGNOSTIC, \ "Print compiler directives on installation.") \
\
product(int, CompilerDirectivesLimit, 50, DIAGNOSTIC, \ "Limit on number of compiler directives.") \
\ /* Bytecode escape analysis estimation. */ \
\
product(bool, EstimateArgEscape, true, \ "Analyze bytecodes to estimate escape state of arguments") \
\
product(intx, BCEATraceLevel, 0, \ "How much tracing to do of bytecode escape analysis estimates " \ "(0-3)") \
range(0, 3) \
\
product(intx, MaxBCEAEstimateLevel, 5, \ "Maximum number of nested calls that are analyzed by BC EA") \
range(0, max_jint) \
\
product(intx, MaxBCEAEstimateSize, 150, \ "Maximum bytecode size of a method to be analyzed by BC EA") \
range(0, max_jint) \
\ /* misc compiler flags */ \
\
product(bool, AbortVMOnCompilationFailure, false, DIAGNOSTIC, \ "Abort VM when method had failed to compile.") \
\
develop(intx, OSROnlyBCI, -1, \ "OSR only at this bci. Negative values mean exclude that bci") \
\
develop(intx, DesiredMethodLimit, 8000, \ "The desired maximum method size (in bytecodes) after inlining") \
\
product(bool, DontCompileHugeMethods, true, \ "Do not compile methods > HugeMethodLimit") \
\
develop(intx, HugeMethodLimit, 8000, \ "Don't compile methods larger than this if " \ "+DontCompileHugeMethods") \
\
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