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Speccy ClassiX 1998
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gcc
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ixemulsrc.lha
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ixemul-41.4
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gen_library
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alarm.c
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1995-05-17
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2KB
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/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement: ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)alarm.c 5.4 (Berkeley) 6/1/90";
#endif /* LIBC_SCCS and not lint */
#define KERNEL
#include "ixemul.h"
/*
* Backwards compatible alarm.
*/
#include <sys/time.h>
int
alarm(int secs)
{
struct itimerval it, oitv;
register struct itimerval *itp =
timerclear(&itp->it_interval);
itp->it_value.tv_sec = secs;
itp->it_value.tv_usec = 0;
if (syscall (SYS_setitimer, ITIMER_REAL, itp, &oitv) < 0)
return (-1);
if (oitv.it_value.tv_usec)
oitv.it_value.tv_sec++;
return oitv.it_value.tv_sec;
}