| /* |
| * Copyright (c) 1997, 2015, 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_INTERPRETER_BYTECODEHISTOGRAM_HPP |
| #define SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |
| |
| #include "interpreter/bytecodes.hpp" |
| #include "memory/allocation.hpp" |
| |
| // BytecodeCounter counts the number of bytecodes executed |
| |
| class BytecodeCounter: AllStatic { |
| private: |
| NOT_PRODUCT(static int _counter_value;) |
| NOT_PRODUCT(static jlong _reset_time;) |
| |
| friend class TemplateInterpreterGenerator; |
| friend class BytecodeInterpreter; |
| |
| public: |
| // Initialization |
| static void reset() PRODUCT_RETURN; |
| |
| // Counter info (all info since last reset) |
| static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; }); |
| static double elapsed_time() PRODUCT_RETURN0; // in seconds |
| static double frequency() PRODUCT_RETURN0; // bytecodes/seconds |
| |
| // Counter printing |
| static void print() PRODUCT_RETURN; |
| }; |
| |
| |
| // BytecodeHistogram collects number of executions of bytecodes |
| |
| class BytecodeHistogram: AllStatic { |
| private: |
| NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode |
| |
| friend class TemplateInterpreterGenerator; |
| friend class BytecodeInterpreter; |
| |
| public: |
| // Initialization |
| static void reset() PRODUCT_RETURN; // reset counters |
| |
| // Profile printing |
| static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent |
| }; |
| |
| |
| // BytecodePairHistogram collects number of executions of bytecode pairs. |
| // A bytecode pair is any sequence of two consequtive bytecodes. |
| |
| class BytecodePairHistogram: AllStatic { |
| public: // for SparcWorks |
| enum Constants { |
| log2_number_of_codes = 8, // use a power of 2 for faster addressing |
| number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes |
| number_of_pairs = number_of_codes * number_of_codes |
| }; |
| |
| private: |
| NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters |
| NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair |
| |
| friend class TemplateInterpreterGenerator; |
| |
| public: |
| // Initialization |
| static void reset() PRODUCT_RETURN; // reset counters |
| |
| // Profile printing |
| static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent |
| }; |
| |
| #endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |