1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/interpreter/bytecodeHistogram.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,100 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
1.29 +#define SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
1.30 +
1.31 +#include "interpreter/bytecodes.hpp"
1.32 +#include "memory/allocation.hpp"
1.33 +
1.34 +// BytecodeCounter counts the number of bytecodes executed
1.35 +
1.36 +class BytecodeCounter: AllStatic {
1.37 + private:
1.38 + NOT_PRODUCT(static int _counter_value;)
1.39 + NOT_PRODUCT(static jlong _reset_time;)
1.40 +
1.41 + friend class TemplateInterpreterGenerator;
1.42 + friend class BytecodeInterpreter;
1.43 +
1.44 + public:
1.45 + // Initialization
1.46 + static void reset() PRODUCT_RETURN;
1.47 +
1.48 + // Counter info (all info since last reset)
1.49 + static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; });
1.50 + static double elapsed_time() PRODUCT_RETURN0; // in seconds
1.51 + static double frequency() PRODUCT_RETURN0; // bytecodes/seconds
1.52 +
1.53 + // Counter printing
1.54 + static void print() PRODUCT_RETURN;
1.55 +};
1.56 +
1.57 +
1.58 +// BytecodeHistogram collects number of executions of bytecodes
1.59 +
1.60 +class BytecodeHistogram: AllStatic {
1.61 + private:
1.62 + NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode
1.63 +
1.64 + friend class TemplateInterpreterGenerator;
1.65 + friend class InterpreterGenerator;
1.66 + friend class BytecodeInterpreter;
1.67 +
1.68 + public:
1.69 + // Initialization
1.70 + static void reset() PRODUCT_RETURN; // reset counters
1.71 +
1.72 + // Profile printing
1.73 + static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent
1.74 +};
1.75 +
1.76 +
1.77 +// BytecodePairHistogram collects number of executions of bytecode pairs.
1.78 +// A bytecode pair is any sequence of two consequtive bytecodes.
1.79 +
1.80 +class BytecodePairHistogram: AllStatic {
1.81 + public: // for SparcWorks
1.82 + enum Constants {
1.83 + log2_number_of_codes = 8, // use a power of 2 for faster addressing
1.84 + number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes
1.85 + number_of_pairs = number_of_codes * number_of_codes
1.86 + };
1.87 +
1.88 + private:
1.89 + NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters
1.90 + NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair
1.91 +
1.92 + friend class TemplateInterpreterGenerator;
1.93 + friend class InterpreterGenerator;
1.94 +
1.95 + public:
1.96 + // Initialization
1.97 + static void reset() PRODUCT_RETURN; // reset counters
1.98 +
1.99 + // Profile printing
1.100 + static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent
1.101 +};
1.102 +
1.103 +#endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
