Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeHistogram.hpp @ 6972:bd7a7ce2e264
6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Mon, 12 Nov 2012 14:03:53 -0800 |
| parents | f95d63e2154a |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |
| 26 #define SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP | |
| 27 | |
| 28 #include "interpreter/bytecodes.hpp" | |
| 29 #include "memory/allocation.hpp" | |
| 30 | |
| 0 | 31 // BytecodeCounter counts the number of bytecodes executed |
| 32 | |
| 33 class BytecodeCounter: AllStatic { | |
| 34 private: | |
| 35 NOT_PRODUCT(static int _counter_value;) | |
| 36 NOT_PRODUCT(static jlong _reset_time;) | |
| 37 | |
| 38 friend class TemplateInterpreterGenerator; | |
| 39 friend class BytecodeInterpreter; | |
| 40 | |
| 41 public: | |
| 42 // Initialization | |
| 43 static void reset() PRODUCT_RETURN; | |
| 44 | |
| 45 // Counter info (all info since last reset) | |
| 46 static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; }); | |
| 47 static double elapsed_time() PRODUCT_RETURN0; // in seconds | |
| 48 static double frequency() PRODUCT_RETURN0; // bytecodes/seconds | |
| 49 | |
| 50 // Counter printing | |
| 51 static void print() PRODUCT_RETURN; | |
| 52 }; | |
| 53 | |
| 54 | |
| 55 // BytecodeHistogram collects number of executions of bytecodes | |
| 56 | |
| 57 class BytecodeHistogram: AllStatic { | |
| 58 private: | |
| 59 NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode | |
| 60 | |
| 61 friend class TemplateInterpreterGenerator; | |
| 62 friend class InterpreterGenerator; | |
| 63 friend class BytecodeInterpreter; | |
| 64 | |
| 65 public: | |
| 66 // Initialization | |
| 67 static void reset() PRODUCT_RETURN; // reset counters | |
| 68 | |
| 69 // Profile printing | |
| 70 static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent | |
| 71 }; | |
| 72 | |
| 73 | |
| 74 // BytecodePairHistogram collects number of executions of bytecode pairs. | |
| 75 // A bytecode pair is any sequence of two consequtive bytecodes. | |
| 76 | |
| 77 class BytecodePairHistogram: AllStatic { | |
| 78 public: // for SparcWorks | |
| 79 enum Constants { | |
| 80 log2_number_of_codes = 8, // use a power of 2 for faster addressing | |
| 81 number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes | |
| 82 number_of_pairs = number_of_codes * number_of_codes | |
| 83 }; | |
| 84 | |
| 85 private: | |
| 86 NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters | |
| 87 NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair | |
| 88 | |
| 89 friend class TemplateInterpreterGenerator; | |
| 90 friend class InterpreterGenerator; | |
| 91 | |
| 92 public: | |
| 93 // Initialization | |
| 94 static void reset() PRODUCT_RETURN; // reset counters | |
| 95 | |
| 96 // Profile printing | |
| 97 static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent | |
| 98 }; | |
| 1972 | 99 |
| 100 #endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |