sleep.c

来自「RTEMS (Real-Time Executive for Multiproc」· C语言 代码 · 共 32 行

/*
 *  3.4.3 Delay Process Execution, P1003.1b-1993, p. 81
 *
 *  $Id: sleep.c,v 1.2 2001/01/24 14:17:28 joel Exp $
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <time.h>
#include <unistd.h>

#include <rtems/system.h>


unsigned int sleep(
  unsigned int seconds
)
{
  /* XXX can we get away with this implementation? */
  struct timespec tp;
  struct timespec tm;

  tp.tv_sec = seconds;
  tp.tv_nsec = 0;

  nanosleep( &tp, &tm );

  return tm.tv_sec;       /* seconds remaining */
}