150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
/*
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* Lame time routines source file
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*
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* Copyright (c) 2000 Mark Taylor
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* $Id: lametime.c,v 1.21 2011/05/07 16:05:17 rbrito Exp $ */
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/*
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* name: GetCPUTime ( void )
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*
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* description: returns CPU time used by the process
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* input: none
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* output: time in seconds
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* known bugs: may not work in SMP and RPC
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* conforming: ANSI C
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*
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* There is some old difficult to read code at the end of this file.
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* Can someone integrate this into this function (if useful)?
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include <stdio.h>
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#include <time.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif
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#include "lametime.h"
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#if !defined(CLOCKS_PER_SEC)
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# warning Your system does not define CLOCKS_PER_SEC, guessing one...
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# define CLOCKS_PER_SEC 1000000
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#endif
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double
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GetCPUTime(void)
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{
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clock_t t;
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#if defined(_MSC_VER) || defined(__BORLANDC__)
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t = clock();
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#else
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t = clock();
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#endif
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return t / (double) CLOCKS_PER_SEC;
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}
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/*
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* name: GetRealTime ( void )
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*
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* description: returns real (human) time elapsed relative to a fixed time (mostly 1970-01-01 00:00:00)
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* input: none
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* output: time in seconds
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* known bugs: bad precision with time()
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*/
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#if defined(__unix__) || defined(SVR4) || defined(BSD)
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# include <sys/time.h>
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# include <unistd.h>
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double
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GetRealTime(void)
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{ /* conforming: SVr4, BSD 4.3 */
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struct timeval t;
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if (0 != gettimeofday(&t, NULL))
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assert(0);
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return t.tv_sec + 1.e-6 * t.tv_usec;
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}
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#elif defined(WIN16) || defined(WIN32)
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# include <stdio.h>
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# include <sys/types.h>
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# include <sys/timeb.h>
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double
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GetRealTime(void)
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{ /* conforming: Win 95, Win NT */
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struct timeb t;
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ftime(&t);
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return t.time + 1.e-3 * t.millitm;
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}
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#else
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double
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GetRealTime(void)
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{ /* conforming: SVr4, SVID, POSIX, X/OPEN, BSD 4.3 */ /* BUT NOT GUARANTEED BY ANSI */
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time_t t;
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t = time(NULL);
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return (double) t;
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}
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#endif
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#if defined(_WIN32) || defined(__CYGWIN__)
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# include <io.h>
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# include <fcntl.h>
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#else
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# include <unistd.h>
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#endif
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int
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lame_set_stream_binary_mode(FILE * const fp)
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{
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#if defined __EMX__
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_fsetmode(fp, "b");
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#elif defined __BORLANDC__
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setmode(_fileno(fp), O_BINARY);
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#elif defined __CYGWIN__
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setmode(fileno(fp), _O_BINARY);
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#elif defined _WIN32
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_setmode(_fileno(fp), _O_BINARY);
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#else
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(void) fp; /* doing nothing here, silencing the compiler only. */
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#endif
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return 0;
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}
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/* End of lametime.c */
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