aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
aoqi@0: #define SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP
aoqi@0: 
aoqi@0: #include "interpreter/bytecodes.hpp"
aoqi@0: #include "memory/allocation.hpp"
aoqi@0: 
aoqi@0: // BytecodeCounter counts the number of bytecodes executed
aoqi@0: 
aoqi@0: class BytecodeCounter: AllStatic {
aoqi@0:  private:
aoqi@0:   NOT_PRODUCT(static int   _counter_value;)
aoqi@0:   NOT_PRODUCT(static jlong _reset_time;)
aoqi@0: 
aoqi@0:   friend class TemplateInterpreterGenerator;
aoqi@0:   friend class         BytecodeInterpreter;
aoqi@0: 
aoqi@0:  public:
aoqi@0:   // Initialization
aoqi@0:   static void reset()                      PRODUCT_RETURN;
aoqi@0: 
aoqi@0:   // Counter info (all info since last reset)
aoqi@0:   static int    counter_value()            PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; });
aoqi@0:   static double elapsed_time()             PRODUCT_RETURN0; // in seconds
aoqi@0:   static double frequency()                PRODUCT_RETURN0; // bytecodes/seconds
aoqi@0: 
aoqi@0:   // Counter printing
aoqi@0:   static void   print()                    PRODUCT_RETURN;
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: // BytecodeHistogram collects number of executions of bytecodes
aoqi@0: 
aoqi@0: class BytecodeHistogram: AllStatic {
aoqi@0:  private:
aoqi@0:   NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];)   // a counter for each bytecode
aoqi@0: 
aoqi@0:   friend class TemplateInterpreterGenerator;
aoqi@0:   friend class         InterpreterGenerator;
aoqi@0:   friend class         BytecodeInterpreter;
aoqi@0: 
aoqi@0:  public:
aoqi@0:   // Initialization
aoqi@0:   static void reset()                       PRODUCT_RETURN; // reset counters
aoqi@0: 
aoqi@0:   // Profile printing
aoqi@0:   static void print(float cutoff = 0.01F)   PRODUCT_RETURN; // cutoff in percent
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: // BytecodePairHistogram collects number of executions of bytecode pairs.
aoqi@0: // A bytecode pair is any sequence of two consequtive bytecodes.
aoqi@0: 
aoqi@0: class BytecodePairHistogram: AllStatic {
aoqi@0:  public: // for SparcWorks
aoqi@0:   enum Constants {
aoqi@0:     log2_number_of_codes = 8,                         // use a power of 2 for faster addressing
aoqi@0:     number_of_codes      = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes
aoqi@0:     number_of_pairs      = number_of_codes * number_of_codes
aoqi@0:   };
aoqi@0: 
aoqi@0:  private:
aoqi@0:   NOT_PRODUCT(static int  _index;)                      // new bytecode is shifted in - used to index into _counters
aoqi@0:   NOT_PRODUCT(static int  _counters[number_of_pairs];)  // a counter for each pair
aoqi@0: 
aoqi@0:   friend class TemplateInterpreterGenerator;
aoqi@0:   friend class         InterpreterGenerator;
aoqi@0: 
aoqi@0:  public:
aoqi@0:   // Initialization
aoqi@0:   static void reset()                       PRODUCT_RETURN;   // reset counters
aoqi@0: 
aoqi@0:   // Profile printing
aoqi@0:   static void print(float cutoff = 0.01F)   PRODUCT_RETURN;   // cutoff in percent
aoqi@0: };
aoqi@0: 
aoqi@0: #endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP