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120 lines
4.8 KiB
C++
120 lines
4.8 KiB
C++
/*=========================================================================
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Copyright (c) 2007, Los Alamos National Security, LLC
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All rights reserved.
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Copyright 2007. Los Alamos National Security, LLC.
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This software was produced under U.S. Government contract DE-AC52-06NA25396
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for Los Alamos National Laboratory (LANL), which is operated by
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Los Alamos National Security, LLC for the U.S. Department of Energy.
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The U.S. Government has rights to use, reproduce, and distribute this software.
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NEITHER THE GOVERNMENT NOR LOS ALAMOS NATIONAL SECURITY, LLC MAKES ANY WARRANTY,
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EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE.
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If software is modified to produce derivative works, such modified software
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should be clearly marked, so as not to confuse it with the version available
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from LANL.
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Additionally, redistribution and use in source and binary forms, with or
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without modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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- Neither the name of Los Alamos National Security, LLC, Los Alamos National
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Laboratory, LANL, the U.S. Government, nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY LOS ALAMOS NATIONAL SECURITY, LLC AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL LOS ALAMOS NATIONAL SECURITY, LLC OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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=========================================================================*/
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// .NAME Timer - create timer for program execution
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//
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// .SECTION Description
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// The Timer class allows for easy timing of the program. The timer
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// tracks real (clock) time elapsed, user time, and system time.
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#ifndef TIMER_H
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#define TIMER_H
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#ifdef __sgi
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// make sure this is defined for BSD time routines
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#define _BSD_TYPES
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// fix a glitch in ANSI compatibility with SGI headers
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#define _STAMP_T
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#endif
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/times.h>
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#include <sys/time.h>
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#ifdef __sgi
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// fix a glitch in ANSI compatibility with SGI headers
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#undef _STAMP_T
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#endif
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namespace cosmotk {
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class Timer
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{
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public:
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Timer(); // Constructor
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~Timer(); // Destructor
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void clear(); // Set all accumulated times to 0
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void start(); // Start timer
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void stop(); // Stop timer
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double clock_time(); // Report clock time accumulated in seconds
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double user_time(); // Report user time accumlated in seconds
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double system_time(); // Report system time accumulated in seconds
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double cpu_time()
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{
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// Report total cpu_time which is just user_time + system_time
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return ( user_time() + system_time() );
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}
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double calibration; // Calibration time: time it takes to
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// get in and out of timer functions
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private:
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short timer_state; // State of timer, either on or off
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long cpu_speed; // CPU speed for times() call
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unsigned long last_secs; // Clock seconds value when the
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// timer was last started
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long last_usecs; // Clock useconds value when the
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// timer was last started
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unsigned long last_user_time; // User time when timer was last started
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unsigned long last_system_time; // System time when timer was last started
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long current_secs; // Current accumulated clock seconds
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long current_usecs; // Current accumulated clock useconds
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long current_user_time; // Current accumulated user time
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long current_system_time; // Current accumulated system time
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struct tms tmsbuf; // Values from call to times
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struct timeval tvbuf; // Values from call to gettimeofday
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struct timezone tzbuf; // Timezone values from gettimeofday
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// These values aren't used for anything
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};
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}
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#endif
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