1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/ci/ciReplay.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,128 @@
1.4 +/*
1.5 + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_CI_CIREPLAY_HPP
1.29 +#define SHARE_VM_CI_CIREPLAY_HPP
1.30 +
1.31 +#include "ci/ciMethod.hpp"
1.32 +
1.33 +// ciReplay
1.34 +
1.35 +//
1.36 +// Replay compilation of a java method by using an information in replay file.
1.37 +// Replay inlining decisions during compilation by using an information in inline file.
1.38 +//
1.39 +// NOTE: these replay functions only exist in debug version of VM.
1.40 +//
1.41 +// Replay compilation.
1.42 +// -------------------
1.43 +//
1.44 +// Replay data file replay.txt can be created by Serviceability Agent
1.45 +// from a core file, see agent/doc/cireplay.html
1.46 +//
1.47 +// $ java -cp <jdk>/lib/sa-jdi.jar sun.jvm.hotspot.CLHSDB
1.48 +// hsdb> attach <jdk>/bin/java ./core
1.49 +// hsdb> threads
1.50 +// t@10 Service Thread
1.51 +// t@9 C2 CompilerThread0
1.52 +// t@8 Signal Dispatcher
1.53 +// t@7 Finalizer
1.54 +// t@6 Reference Handler
1.55 +// t@2 main
1.56 +// hsdb> dumpreplaydata t@9 > replay.txt
1.57 +// hsdb> quit
1.58 +//
1.59 +// (Note: SA could be also used to extract app.jar and boot.jar files
1.60 +// from core file to replay compilation if only core file is available)
1.61 +//
1.62 +// Replay data file replay_pid%p.log is also created when VM crashes
1.63 +// in Compiler thread during compilation. It is controlled by
1.64 +// DumpReplayDataOnError flag which is ON by default.
1.65 +//
1.66 +// Replay file replay_pid%p_compid%d.log can be created
1.67 +// for the specified java method during normal execution using
1.68 +// CompileCommand option DumpReplay:
1.69 +//
1.70 +// -XX:CompileCommand=option,Benchmark::test,DumpReplay
1.71 +//
1.72 +// In this case the file name has additional compilation id "_compid%d"
1.73 +// because the method could be compiled several times.
1.74 +//
1.75 +// To replay compilation the replay file should be specified:
1.76 +//
1.77 +// -XX:+ReplayCompiles -XX:ReplayDataFile=replay_pid2133.log
1.78 +//
1.79 +// VM thread reads data from the file immediately after VM initialization
1.80 +// and puts the compilation task on compile queue. After that it goes into
1.81 +// wait state (BackgroundCompilation flag is set to false) since there is no
1.82 +// a program to execute. VM exits when the compilation is finished.
1.83 +//
1.84 +//
1.85 +// Replay inlining.
1.86 +// ----------------
1.87 +//
1.88 +// Replay inlining file inline_pid%p_compid%d.log is created for
1.89 +// a specific java method during normal execution of a java program
1.90 +// using CompileCommand option DumpInline:
1.91 +//
1.92 +// -XX:CompileCommand=option,Benchmark::test,DumpInline
1.93 +//
1.94 +// To replay inlining the replay file and the method should be specified:
1.95 +//
1.96 +// -XX:CompileCommand=option,Benchmark::test,ReplayInline -XX:InlineDataFile=inline_pid3244_compid6.log
1.97 +//
1.98 +// The difference from replay compilation is that replay inlining
1.99 +// is performed during normal java program execution.
1.100 +//
1.101 +
1.102 +class ciReplay {
1.103 + CI_PACKAGE_ACCESS
1.104 +
1.105 +#ifndef PRODUCT
1.106 + private:
1.107 + static int replay_impl(TRAPS);
1.108 +
1.109 + public:
1.110 + // Replay specified compilation and exit VM.
1.111 + static void replay(TRAPS);
1.112 + // Load inlining decisions from file and use them
1.113 + // during compilation of specified method.
1.114 + static void* load_inline_data(ciMethod* method, int entry_bci, int comp_level);
1.115 +
1.116 + // These are used by the CI to fill in the cached data from the
1.117 + // replay file when replaying compiles.
1.118 + static void initialize(ciMethodData* method);
1.119 + static void initialize(ciMethod* method);
1.120 +
1.121 + static bool is_loaded(Method* method);
1.122 + static bool is_loaded(Klass* klass);
1.123 +
1.124 + static bool should_not_inline(ciMethod* method);
1.125 + static bool should_inline(void* data, ciMethod* method, int bci, int inline_depth);
1.126 + static bool should_not_inline(void* data, ciMethod* method, int bci, int inline_depth);
1.127 +
1.128 +#endif
1.129 +};
1.130 +
1.131 +#endif // SHARE_VM_CI_CIREPLAY_HPP
