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/*
* 3.4.3 Delay Process Execution, P1003.1b-1993, p. 81
*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#ifndef HAVE_USLEEP
#include <time.h>
#include <unistd.h>
#include <rtems/system.h>
#include <rtems/score/tod.h>
int usleep(
useconds_t useconds
)
{
struct timespec tp;
struct timespec tm;
unsigned remaining;
tp.tv_sec = useconds / TOD_MICROSECONDS_PER_SECOND;
tp.tv_nsec = (useconds % TOD_MICROSECONDS_PER_SECOND) * 1000;
nanosleep( &tp, &tm );
remaining = tm.tv_sec * TOD_MICROSECONDS_PER_SECOND;
remaining += tm.tv_nsec / 1000;
return remaining; /* seconds remaining */
}
#endif
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