/*
*******************************************************************************
*  Copyright (c) 1997 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/daemonsleep.c,v $
*  $Author: mpoole $
*  $Date: 2002/10/07 09:37:38 $
*  $Revision: 1.2 $
*  Purpose        :
*
*******************************************************************************
*
* Change History
*
* $Log: daemonsleep.c,v $
* Revision 1.2  2002/10/07 09:37:38  mpoole
* Initial checkin of mplib1-3.1.0
*
* Revision 1.1  2002/10/07 09:36:55  mpoole
* Initial checkin of mplib1-3.1.0
*
*
*******************************************************************************
*/

#ident "$Header: /home/cvs/cvsroot/onelan/onelan/src/mplib1/libsrc/daemonsleep.c,v 1.2 2002/10/07 09:37:38 mpoole Exp $"

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

#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <signal.h>

#include <mplib1/mplib1_config.h>
#ifdef INCLUDE_SYS_SELECT
#include <sys/select.h>
#endif

#include <mplib1/dl_list.h>
#include <mplib1/bpo_proc.h>
#include <mplib1/daemon.h>

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

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

int
mp_daemon_sleep( int how_long )
{
    struct timeval sleep_period;
    fd_set readset;
    int rv;
    static int pipefd=-1;

    if (pipefd==-1)
    {
	pipefd = Get_Process_Pipe_fd( );
    }

    if (pipefd != -1)
    {
	FD_ZERO( &readset );
	FD_SET( pipefd, &readset );
	sleep_period.tv_sec = how_long;
	sleep_period.tv_usec = 0;

	allow_sysint( );
	rv = select( pipefd+1, &readset, NULL, NULL, &sleep_period );
	if(rv==1)
	{
	    /* read the byte from the fifo */
	    char tc;
	    read( pipefd, &tc, 1 );
	}
	deny_sysint( );
    }else
    {
        sleep_period.tv_sec = how_long;
        sleep_period.tv_usec = 0;
	allow_sysint( );
        rv = select( 0, NULL, NULL, NULL, &sleep_period );
	deny_sysint( );
    }

    return(rv);
}


/* -- End of File -- */