/*

 *	Lame time routines source file

 *

 *	Copyright (c) 2000 Mark Taylor

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/* $Id: lametime.c,v 1.21 2011/05/07 16:05:17 rbrito Exp $ */

/*

 * name:        GetCPUTime ( void )

 *

 * description: returns CPU time used by the process

 * input:       none

 * output:      time in seconds

 * known bugs:  may not work in SMP and RPC

 * conforming:  ANSI C

 *

 * There is some old difficult to read code at the end of this file.

 * Can someone integrate this into this function (if useful)?

 */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <assert.h>

#include <stdio.h>

#include <time.h>

#ifdef WITH_DMALLOC

#include <dmalloc.h>

#endif

#include "lametime.h"

#if !defined(CLOCKS_PER_SEC)

# warning Your system does not define CLOCKS_PER_SEC, guessing one...

# define CLOCKS_PER_SEC 1000000

#endif

double

GetCPUTime(void)

{

    clock_t t;

#if defined(_MSC_VER)  ||  defined(__BORLANDC__)

    t = clock();

#else

    t = clock();

#endif

    return t / (double) CLOCKS_PER_SEC;

}

/*

 * name:        GetRealTime ( void )

 *

 * description: returns real (human) time elapsed relative to a fixed time (mostly 1970-01-01 00:00:00)

 * input:       none

 * output:      time in seconds

 * known bugs:  bad precision with time()

 */

#if defined(__unix__)  ||  defined(SVR4)  ||  defined(BSD)

# include <sys/time.h>

# include <unistd.h>

double

GetRealTime(void)

{                       /* conforming:  SVr4, BSD 4.3 */

    struct timeval t;

    if (0 != gettimeofday(&t, NULL))

        assert(0);

    return t.tv_sec + 1.e-6 * t.tv_usec;

}

#elif defined(WIN16)  ||  defined(WIN32)

# include <stdio.h>

# include <sys/types.h>

# include <sys/timeb.h>

double

GetRealTime(void)

{                       /* conforming:  Win 95, Win NT */

    struct timeb t;

    ftime(&t);

    return t.time + 1.e-3 * t.millitm;

}

#else

double

GetRealTime(void)

{                       /* conforming:  SVr4, SVID, POSIX, X/OPEN, BSD 4.3 */ /* BUT NOT GUARANTEED BY ANSI */

    time_t  t;

    t = time(NULL);

    return (double) t;

}

#endif

#if defined(_WIN32) || defined(__CYGWIN__)

# include <io.h>

# include <fcntl.h>

#else

# include <unistd.h>

#endif

int

lame_set_stream_binary_mode(FILE * const fp)

{

#if   defined __EMX__

    _fsetmode(fp, "b");

#elif defined __BORLANDC__

    setmode(_fileno(fp), O_BINARY);

#elif defined __CYGWIN__

    setmode(fileno(fp), _O_BINARY);

#elif defined _WIN32

    _setmode(_fileno(fp), _O_BINARY);

#else

    (void) fp;          /* doing nothing here, silencing the compiler only. */

#endif

    return 0;

}

/* End of lametime.c */