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comparison: src/share/vm/interpreter/bytecodeHistogram.hpp
src/share/vm/interpreter/bytecodeHistogram.hpp
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| 1 /* | |
| 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 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 | |
| 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 }; | |
| 99 | |
| 100 #endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |
