/*
*******************************************************************************
*  Copyright (c) 1996 Martin Poole                            *
*******************************************************************************
**
** WARNING !!  WARNING !! WARNING !! WARNING !! WARNING !! WARNING !!
**
** Any changes to be made to this file should first be checked with
** mplib1 source control for library integrity.
**
** mplib1 source control can be reached at  mplib1@quatermass.co.uk
** 
*                                                                             *
*  $Source: /home/cvs/cvsroot/onelan/onelan/src/mplib1/libsrc/stopwatch.c,v $
*  $Author: mpoole $
*  $Date: 2002/10/07 09:37:39 $
*  $Revision: 1.2 $
*                                                                             *
*******************************************************************************
*                                                                             *
* $Log: stopwatch.c,v $
* Revision 1.2  2002/10/07 09:37:39  mpoole
* Initial checkin of mplib1-3.1.0
*
* Revision 1.1  2002/10/07 09:36:57  mpoole
* Initial checkin of mplib1-3.1.0
*
*
*******************************************************************************
*/

#ident "$Header: /home/cvs/cvsroot/onelan/onelan/src/mplib1/libsrc/stopwatch.c,v 1.2 2002/10/07 09:37:39 mpoole Exp $"

/* ------------------------------------------------------------------
    Include files
   ------------------------------------------------------------------ */

#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
#include <string.h>
#include <errno.h>

#include <mplib1/mplib1_config.h>
#include <mplib1/stopwatch.h>

/* ------------------------------------------------------------------
    defines
   ------------------------------------------------------------------ */

/* ------------------------------------------------------------------
    Code starts here
   ------------------------------------------------------------------ */

static int
get_time( struct timeval *tvp )
{
    int rv;
#ifdef H_GETTIMEOFDAY_2_NULL
    rv = gettimeofday( tvp, NULL );
#else
#ifdef H_GETTIMEOFDAY_2_PARAMS
    struct timezone my_tz;

    my_tz.tz_minuteswest = 0;
    my_tz.tz_dsttime = 0;

    rv = gettimeofday( tvp, &my_tz );
#else
    rv = gettimeofday( tvp );
#endif
#endif
    return(rv);
}

int
init_stopwatch( struct stopwatch *stp )
{
    if (stp)
	memset( stp, '\0', STOPWATCH_SIZE );
    return(0);
}


int
start_stopwatch( struct stopwatch *stp )
{
    int rv;
    if (stp)
    {
	rv = get_time( &stp->start_time );
    }else
    {
	rv= -1;
	errno = ENOENT;
    }
    return(rv);
}

int
stop_stopwatch( struct stopwatch *stp )
{
    int rv;
    struct timeval end_time;
    if (stp && stp->start_time.tv_sec)
    {
	rv = get_time( &end_time );
	accum_stop_timevals( stp, &end_time );
    }else
    {
	rv= -1;
	errno = ENOENT;
    }
    return(rv);
}

int
accrete_stopwatch( struct stopwatch *stp_into, struct stopwatch *stp_from )
{
    add_timevals( &stp_into->cumulative_time, &stp_from->cumulative_time );
    return(0);
}

/* -- End of File -- */