53 lines
850 B
C
53 lines
850 B
C
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/* */
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/* Copyright (c) 1984,1985,1986,1987,1988,1989,1990 AT&T */
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/* All Rights Reserved */
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/* */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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/* */
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#include <errno.h>
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#include <sys/types.h>
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#include <signal.h>
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extern int errno;
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int handler();
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int ntry = 0;
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main()
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{
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int status;
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int pid;
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int nsleep = 4;
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signal(SIGALRM,handler);
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do
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{
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if((pid=fork())==0)
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{
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sleep(nsleep);
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exit(1);
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}
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else if(pid < 0)
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exit(1);
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alarm(2);
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pid = wait(&status);
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if(pid<0 && errno==EINTR)
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{
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printf("#define SIG_NORESTART 1\n");
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exit(0);
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}
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}
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while(ntry==0 && (nsleep+=2) < 12);
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exit(0);
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}
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int handler(sig)
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{
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ntry++;
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signal(SIGALRM,handler);
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alarm(2);
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}
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