99 lines
3.5 KiB
C++
99 lines
3.5 KiB
C++
/*
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* Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
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#define SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
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#include "interpreter/bytecodes.hpp"
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#include "memory/allocation.hpp"
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// BytecodeCounter counts the number of bytecodes executed
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class BytecodeCounter: AllStatic {
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private:
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NOT_PRODUCT(static int _counter_value;)
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NOT_PRODUCT(static jlong _reset_time;)
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friend class TemplateInterpreterGenerator;
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friend class BytecodeInterpreter;
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public:
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// Initialization
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static void reset() PRODUCT_RETURN;
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// Counter info (all info since last reset)
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static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; });
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static double elapsed_time() PRODUCT_RETURN0; // in seconds
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static double frequency() PRODUCT_RETURN0; // bytecodes/seconds
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// Counter printing
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static void print() PRODUCT_RETURN;
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};
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// BytecodeHistogram collects number of executions of bytecodes
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class BytecodeHistogram: AllStatic {
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private:
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NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode
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friend class TemplateInterpreterGenerator;
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friend class BytecodeInterpreter;
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public:
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// Initialization
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static void reset() PRODUCT_RETURN; // reset counters
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// Profile printing
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static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent
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};
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// BytecodePairHistogram collects number of executions of bytecode pairs.
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// A bytecode pair is any sequence of two consequtive bytecodes.
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class BytecodePairHistogram: AllStatic {
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public: // for solstudio
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enum Constants {
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log2_number_of_codes = 8, // use a power of 2 for faster addressing
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number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes
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number_of_pairs = number_of_codes * number_of_codes
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};
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private:
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NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters
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NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair
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friend class TemplateInterpreterGenerator;
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public:
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// Initialization
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static void reset() PRODUCT_RETURN; // reset counters
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// Profile printing
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static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent
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};
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#endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
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