Mercurial > hg > truffle
view src/share/vm/ci/ciReplay.hpp @ 21863:f4822d122041 jdk8u45-b11
Merge
author | asaha |
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date | Sat, 07 Mar 2015 16:26:10 -0800 |
parents | 849eb7bfceac |
children | 4ca6dc0799b6 |
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/* * Copyright (c) 2012, 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. * */ #ifndef SHARE_VM_CI_CIREPLAY_HPP #define SHARE_VM_CI_CIREPLAY_HPP #include "ci/ciMethod.hpp" // ciReplay // // Replay compilation of a java method by using an information in replay file. // Replay inlining decisions during compilation by using an information in inline file. // // NOTE: these replay functions only exist in debug version of VM. // // Replay compilation. // ------------------- // // Replay data file replay.txt can be created by Serviceability Agent // from a core file, see agent/doc/cireplay.html // // $ java -cp <jdk>/lib/sa-jdi.jar sun.jvm.hotspot.CLHSDB // hsdb> attach <jdk>/bin/java ./core // hsdb> threads // t@10 Service Thread // t@9 C2 CompilerThread0 // t@8 Signal Dispatcher // t@7 Finalizer // t@6 Reference Handler // t@2 main // hsdb> dumpreplaydata t@9 > replay.txt // hsdb> quit // // (Note: SA could be also used to extract app.jar and boot.jar files // from core file to replay compilation if only core file is available) // // Replay data file replay_pid%p.log is also created when VM crashes // in Compiler thread during compilation. It is controlled by // DumpReplayDataOnError flag which is ON by default. // // Replay file replay_pid%p_compid%d.log can be created // for the specified java method during normal execution using // CompileCommand option DumpReplay: // // -XX:CompileCommand=option,Benchmark::test,DumpReplay // // In this case the file name has additional compilation id "_compid%d" // because the method could be compiled several times. // // To replay compilation the replay file should be specified: // // -XX:+ReplayCompiles -XX:ReplayDataFile=replay_pid2133.log // // VM thread reads data from the file immediately after VM initialization // and puts the compilation task on compile queue. After that it goes into // wait state (BackgroundCompilation flag is set to false) since there is no // a program to execute. VM exits when the compilation is finished. // // // Replay inlining. // ---------------- // // Replay inlining file inline_pid%p_compid%d.log is created for // a specific java method during normal execution of a java program // using CompileCommand option DumpInline: // // -XX:CompileCommand=option,Benchmark::test,DumpInline // // To replay inlining the replay file and the method should be specified: // // -XX:CompileCommand=option,Benchmark::test,ReplayInline -XX:InlineDataFile=inline_pid3244_compid6.log // // The difference from replay compilation is that replay inlining // is performed during normal java program execution. // class ciReplay { CI_PACKAGE_ACCESS #ifndef PRODUCT private: static int replay_impl(TRAPS); public: // Replay specified compilation and exit VM. static void replay(TRAPS); // Load inlining decisions from file and use them // during compilation of specified method. static void* load_inline_data(ciMethod* method, int entry_bci, int comp_level); // These are used by the CI to fill in the cached data from the // replay file when replaying compiles. static void initialize(ciMethodData* method); static void initialize(ciMethod* method); static bool is_loaded(Method* method); static bool is_loaded(Klass* klass); static bool should_not_inline(ciMethod* method); static bool should_inline(void* data, ciMethod* method, int bci, int inline_depth); static bool should_not_inline(void* data, ciMethod* method, int bci, int inline_depth); #endif }; #endif // SHARE_VM_CI_CIREPLAY_HPP