Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/interpreter/bytecodeHistogram.hpp@f90c822e73f8 (annotated)
src/share/vm/interpreter/bytecodeHistogram.hpp
Wed, 27 Apr 2016 01:25:04 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:25:04 +0800
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |
| aoqi@0 | 26 | #define SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "interpreter/bytecodes.hpp" |
| aoqi@0 | 29 | #include "memory/allocation.hpp" |
| aoqi@0 | 30 | |
| aoqi@0 | 31 | // BytecodeCounter counts the number of bytecodes executed |
| aoqi@0 | 32 | |
| aoqi@0 | 33 | class BytecodeCounter: AllStatic { |
| aoqi@0 | 34 | private: |
| aoqi@0 | 35 | NOT_PRODUCT(static int _counter_value;) |
| aoqi@0 | 36 | NOT_PRODUCT(static jlong _reset_time;) |
| aoqi@0 | 37 | |
| aoqi@0 | 38 | friend class TemplateInterpreterGenerator; |
| aoqi@0 | 39 | friend class BytecodeInterpreter; |
| aoqi@0 | 40 | |
| aoqi@0 | 41 | public: |
| aoqi@0 | 42 | // Initialization |
| aoqi@0 | 43 | static void reset() PRODUCT_RETURN; |
| aoqi@0 | 44 | |
| aoqi@0 | 45 | // Counter info (all info since last reset) |
| aoqi@0 | 46 | static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; }); |
| aoqi@0 | 47 | static double elapsed_time() PRODUCT_RETURN0; // in seconds |
| aoqi@0 | 48 | static double frequency() PRODUCT_RETURN0; // bytecodes/seconds |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | // Counter printing |
| aoqi@0 | 51 | static void print() PRODUCT_RETURN; |
| aoqi@0 | 52 | }; |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | |
| aoqi@0 | 55 | // BytecodeHistogram collects number of executions of bytecodes |
| aoqi@0 | 56 | |
| aoqi@0 | 57 | class BytecodeHistogram: AllStatic { |
| aoqi@0 | 58 | private: |
| aoqi@0 | 59 | NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | friend class TemplateInterpreterGenerator; |
| aoqi@0 | 62 | friend class InterpreterGenerator; |
| aoqi@0 | 63 | friend class BytecodeInterpreter; |
| aoqi@0 | 64 | |
| aoqi@0 | 65 | public: |
| aoqi@0 | 66 | // Initialization |
| aoqi@0 | 67 | static void reset() PRODUCT_RETURN; // reset counters |
| aoqi@0 | 68 | |
| aoqi@0 | 69 | // Profile printing |
| aoqi@0 | 70 | static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent |
| aoqi@0 | 71 | }; |
| aoqi@0 | 72 | |
| aoqi@0 | 73 | |
| aoqi@0 | 74 | // BytecodePairHistogram collects number of executions of bytecode pairs. |
| aoqi@0 | 75 | // A bytecode pair is any sequence of two consequtive bytecodes. |
| aoqi@0 | 76 | |
| aoqi@0 | 77 | class BytecodePairHistogram: AllStatic { |
| aoqi@0 | 78 | public: // for SparcWorks |
| aoqi@0 | 79 | enum Constants { |
| aoqi@0 | 80 | log2_number_of_codes = 8, // use a power of 2 for faster addressing |
| aoqi@0 | 81 | number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes |
| aoqi@0 | 82 | number_of_pairs = number_of_codes * number_of_codes |
| aoqi@0 | 83 | }; |
| aoqi@0 | 84 | |
| aoqi@0 | 85 | private: |
| aoqi@0 | 86 | NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters |
| aoqi@0 | 87 | NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | friend class TemplateInterpreterGenerator; |
| aoqi@0 | 90 | friend class InterpreterGenerator; |
| aoqi@0 | 91 | |
| aoqi@0 | 92 | public: |
| aoqi@0 | 93 | // Initialization |
| aoqi@0 | 94 | static void reset() PRODUCT_RETURN; // reset counters |
| aoqi@0 | 95 | |
| aoqi@0 | 96 | // Profile printing |
| aoqi@0 | 97 | static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent |
| aoqi@0 | 98 | }; |
| aoqi@0 | 99 | |
| aoqi@0 | 100 | #endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |
