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136 lines
4.2 KiB
136 lines
4.2 KiB
/**
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@file
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@ingroup util
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@brief System time calls
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@details Provide a uniform interface across different operating systems.
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@copyright@parblock
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Copyright (c) 1994-1998 The Regents of the Univ. of California.
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All rights reserved.
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Permission is hereby granted, without written agreement and without license
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or royalty fees, to use, copy, modify, and distribute this software and its
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documentation for any purpose, provided that the above copyright notice and
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the following two paragraphs appear in all copies of this software.
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IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN
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"AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE
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MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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@endparblock
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@copyright@parblock
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Copyright (c) 1999-2015, Regents of the University of Colorado
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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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
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notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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Neither the name of the University of Colorado nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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@endparblock
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*/
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#include "util.h"
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#if HAVE_SYS_TIMES_H == 1
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#include <sys/times.h>
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#endif
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/**
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* @brief returns a long which represents the elapsed processor
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* time in milliseconds since some constant reference.
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*/
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long
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util_cpu_time(void)
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{
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#if HAVE_SYSCONF == 1
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/* Code for POSIX systems */
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struct tms buffer;
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long nticks; /* number of clock ticks per second */
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nticks = sysconf(_SC_CLK_TCK);
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times(&buffer);
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return (long) ((buffer.tms_utime + buffer.tms_stime) * (1000.0/nticks));
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#elif defined(_WIN32)
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FILETIME creationTime, exitTime, kernelTime, userTime;
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if (GetProcessTimes(GetCurrentProcess(), &creationTime, &exitTime,
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&kernelTime, &userTime)) {
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ULARGE_INTEGER integerTime;
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integerTime.u.LowPart = userTime.dwLowDateTime;
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integerTime.u.HighPart = userTime.dwHighDateTime;
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return (long) (integerTime.QuadPart / 10000);
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} else {
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return 0;
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}
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#else
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return 0L;
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#endif
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}
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/**
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* @brief returns a long which represents the elapsed processor
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* time in milliseconds since some constant reference. It includes
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* waited-for terminated children.
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*/
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long
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util_cpu_ctime(void)
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{
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#if HAVE_SYSCONF == 1
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/* Code for POSIX systems */
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struct tms buffer;
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long nticks; /* number of clock ticks per second */
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nticks = sysconf(_SC_CLK_TCK);
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times(&buffer);
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return (long) ((buffer.tms_utime + buffer.tms_cutime) * (1000.0/nticks));
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#else
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return 0L;
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#endif
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}
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