1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/interpreter/bytecodeHistogram.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,92 @@
1.4 +/*
1.5 + * Copyright 1997-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// BytecodeCounter counts the number of bytecodes executed
1.29 +
1.30 +class BytecodeCounter: AllStatic {
1.31 + private:
1.32 + NOT_PRODUCT(static int _counter_value;)
1.33 + NOT_PRODUCT(static jlong _reset_time;)
1.34 +
1.35 + friend class TemplateInterpreterGenerator;
1.36 + friend class BytecodeInterpreter;
1.37 +
1.38 + public:
1.39 + // Initialization
1.40 + static void reset() PRODUCT_RETURN;
1.41 +
1.42 + // Counter info (all info since last reset)
1.43 + static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; });
1.44 + static double elapsed_time() PRODUCT_RETURN0; // in seconds
1.45 + static double frequency() PRODUCT_RETURN0; // bytecodes/seconds
1.46 +
1.47 + // Counter printing
1.48 + static void print() PRODUCT_RETURN;
1.49 +};
1.50 +
1.51 +
1.52 +// BytecodeHistogram collects number of executions of bytecodes
1.53 +
1.54 +class BytecodeHistogram: AllStatic {
1.55 + private:
1.56 + NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode
1.57 +
1.58 + friend class TemplateInterpreterGenerator;
1.59 + friend class InterpreterGenerator;
1.60 + friend class BytecodeInterpreter;
1.61 +
1.62 + public:
1.63 + // Initialization
1.64 + static void reset() PRODUCT_RETURN; // reset counters
1.65 +
1.66 + // Profile printing
1.67 + static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent
1.68 +};
1.69 +
1.70 +
1.71 +// BytecodePairHistogram collects number of executions of bytecode pairs.
1.72 +// A bytecode pair is any sequence of two consequtive bytecodes.
1.73 +
1.74 +class BytecodePairHistogram: AllStatic {
1.75 + public: // for SparcWorks
1.76 + enum Constants {
1.77 + log2_number_of_codes = 8, // use a power of 2 for faster addressing
1.78 + number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes
1.79 + number_of_pairs = number_of_codes * number_of_codes
1.80 + };
1.81 +
1.82 + private:
1.83 + NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters
1.84 + NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair
1.85 +
1.86 + friend class TemplateInterpreterGenerator;
1.87 + friend class InterpreterGenerator;
1.88 +
1.89 + public:
1.90 + // Initialization
1.91 + static void reset() PRODUCT_RETURN; // reset counters
1.92 +
1.93 + // Profile printing
1.94 + static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent
1.95 +};
