Mercurial > hg > graal-compiler
view src/share/vm/runtime/timer.hpp @ 1333:3f12a94552cc
Added tag jdk7-b88 for changeset 4b60f23c4223
author | mikejwre |
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date | Thu, 08 Apr 2010 17:02:41 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // Timers for simple measurement. class elapsedTimer VALUE_OBJ_CLASS_SPEC { friend class VMStructs; private: jlong _counter; jlong _start_counter; bool _active; public: elapsedTimer() { _active = false; reset(); } void add(elapsedTimer t); void start(); void stop(); void reset() { _counter = 0; } double seconds() const; jlong milliseconds() const; jlong ticks() const { return _counter; } jlong active_ticks() const; bool is_active() const { return _active; } }; // TimeStamp is used for recording when an event took place. class TimeStamp VALUE_OBJ_CLASS_SPEC { private: jlong _counter; public: TimeStamp() { _counter = 0; } void clear() { _counter = 0; } // has the timestamp been updated since being created or cleared? bool is_updated() const { return _counter != 0; } // update to current elapsed time void update(); // update to given elapsed time void update_to(jlong ticks); // returns seconds since updated // (must not be in a cleared state: must have been previously updated) double seconds() const; jlong milliseconds() const; // ticks elapsed between VM start and last update jlong ticks() const { return _counter; } // ticks elapsed since last update jlong ticks_since_update() const; }; // TraceTime is used for tracing the execution time of a block // Usage: // { TraceTime t("block time") // some_code(); // } // class TraceTime: public StackObj { private: bool _active; // do timing bool _verbose; // report every timing bool _print_cr; // add a CR to the end of the timer report elapsedTimer _t; // timer elapsedTimer* _accum; // accumulator outputStream* _logfile; // output log file public: // Constuctors TraceTime(const char* title, bool doit = true, bool print_cr = true, outputStream *logfile = NULL); TraceTime(const char* title, elapsedTimer* accumulator, bool doit = true, bool verbose = false, outputStream *logfile = NULL ); ~TraceTime(); // Accessors void set_verbose(bool verbose) { _verbose = verbose; } bool verbose() const { return _verbose; } // Activation void suspend() { if (_active) _t.stop(); } void resume() { if (_active) _t.start(); } }; class TraceCPUTime: public StackObj { private: bool _active; // true if times will be measured and printed bool _print_cr; // if true print carriage return at end double _starting_user_time; // user time at start of measurement double _starting_system_time; // system time at start of measurement double _starting_real_time; // real time at start of measurement outputStream* _logfile; // output is printed to this stream bool _error; // true if an error occurred, turns off output public: TraceCPUTime(bool doit = true, bool print_cr = true, outputStream *logfile = NULL); ~TraceCPUTime(); };