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/* $OpenBSD: siginterrupt.c,v 1.1 2011/09/13 23:50:17 fgsch Exp $ */
/*
* Federico G. Schwindt <fgsch@openbsd.org>, 2011. Public Domain.
*/
#include <pthread.h>
#include <signal.h>
#include <unistd.h>
#include "test.h"
volatile sig_atomic_t hits = 0;
void
handler(int sig)
{
hits++;
}
void *
blocker(void *arg)
{
int fds[2];
char buf;
CHECKe(pipe(fds));
ASSERT(read(fds[0], &buf, 1) == -1);
return ((caddr_t)NULL + errno);
}
int
main(int argc, char **argv)
{
pthread_t tid;
void *retval;
ASSERT(signal(SIGUSR1, handler) != SIG_ERR);
CHECKr(pthread_create(&tid, NULL, blocker, NULL));
sleep(1);
/* With signal(3) system calls will be restarted. */
CHECKr(pthread_kill(tid, SIGUSR1));
sleep(1);
/* Same as default with signal(3). */
CHECKe(siginterrupt(SIGUSR1, 0));
CHECKr(pthread_kill(tid, SIGUSR1));
sleep(1);
/* Should interrupt the call now. */
CHECKe(siginterrupt(SIGUSR1, 1));
CHECKr(pthread_kill(tid, SIGUSR1));
sleep(1);
CHECKr(pthread_join(tid, &retval));
ASSERT(retval == (void *)EINTR);
ASSERT(hits == 3);
SUCCEED;
}
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