36 lines
632 B
C
36 lines
632 B
C
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/*
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** Copyright 2004, Axel Dörfler, [email protected]. All rights reserved.
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** Distributed under the terms of the Haiku License.
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <syscalls.h>
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uint
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alarm(unsigned int sec)
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{
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struct itimerval value, oldValue;
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int result;
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value.it_interval.tv_sec = value.it_interval.tv_usec = 0;
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value.it_value.tv_sec = sec;
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value.it_value.tv_usec = 0;
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result = setitimer(ITIMER_REAL, &value, &oldValue);
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if (result < 0) {
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errno = result;
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return -1;
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}
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if (oldValue.it_value.tv_usec)
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oldValue.it_value.tv_sec++;
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return oldValue.it_value.tv_sec;
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}
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