Files
QNX/lib/c/1/alarm.c
2025-08-20 19:02:58 +08:00

42 lines
1.2 KiB
C

/*
* $QNXLicenseC:
* Copyright 2007, QNX Software Systems. All Rights Reserved.
*
* You must obtain a written license from and pay applicable license fees to QNX
* Software Systems before you may reproduce, modify or distribute this software,
* or any work that includes all or part of this software. Free development
* licenses are available for evaluation and non-commercial purposes. For more
* information visit http://licensing.qnx.com or email licensing@qnx.com.
*
* This file may contain contributions from others. Please review this entire
* file for other proprietary rights or license notices, as well as the QNX
* Development Suite License Guide at http://licensing.qnx.com/license-guide/
* for other information.
* $
*/
#include <unistd.h>
#include <time.h>
#include <string.h>
#include <inttypes.h>
#include <sys/neutrino.h>
unsigned alarm(unsigned secs) {
struct _itimer i, o;
unsigned ret;
i.nsec = secs * (uint64_t)1000000000;
i.interval_nsec = 0;
if(TimerAlarm(CLOCK_REALTIME, &i, &o) == -1) return (unsigned)-1;
/* this call cannot return 0, unless the timer has fired */
ret = (unsigned)(o.nsec / (uint64_t)1000000000);
return (o.nsec && ret == 0) ? 1 : ret;
}
__SRCVERSION("alarm.c $Rev: 153052 $");