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51 lines
821 B
C
51 lines
821 B
C
/*
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* The sleep(3) code is from BSD 4.3-reno, heavily modified (shorted)
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* for use with GNO.
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*
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* $Id: sleep.c,v 1.2 1997/09/21 06:05:01 gdr Exp $
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*
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* This file has been formatted for tabs every 8 columns
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*/
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#ifdef __ORCAC__
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segment "libc_gen__";
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#endif
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#include <signal.h>
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#include <unistd.h>
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static int _ringring;
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#pragma databank 1
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static void
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_sleephandler(int sig, int code) {
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_ringring = 1;
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}
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#pragma databank 0
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unsigned int
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sleep(unsigned int seconds) {
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sig_t ovec;
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long omask;
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if (seconds == 0) {
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return 0;
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}
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ovec = signal(SIGALRM, _sleephandler);
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omask = sigblock(sigmask(SIGALRM));
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_ringring = 0;
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alarm(seconds);
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while (!_ringring) {
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sigpause(omask &~ sigmask(SIGALRM));
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}
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signal(SIGALRM, ovec);
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sigsetmask(omask);
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return 0;
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}
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int pause(void)
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{
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sigpause(0L);
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return -1;
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}
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