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/* $OpenBSD: read.c,v 1.1 2011/09/13 23:50:17 fgsch Exp $ */
/*
* Federico G. Schwindt <fgsch@openbsd.org>, 2011. Public Domain.
*/
#include <sys/types.h>
#include <pthread.h>
#include <signal.h>
#include <unistd.h>
#include "test.h"
volatile sig_atomic_t hits = 0;
void
handler(int sig)
{
hits++;
}
void *
thr_read(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)
{
struct sigaction sa;
pthread_t tid;
void *retval;
bzero(&sa, sizeof(sa));
sa.sa_handler = handler;
sa.sa_flags = SA_RESTART;
CHECKe(sigaction(SIGUSR1, &sa, NULL));
sa.sa_flags = 0;
CHECKe(sigaction(SIGUSR2, &sa, NULL));
CHECKr(pthread_create(&tid, NULL, thr_read, NULL));
sleep(2);
/* Should restart it. */
CHECKr(pthread_kill(tid, SIGUSR1));
sleep(1);
/* Should interrupt it. */
CHECKr(pthread_kill(tid, SIGUSR2));
sleep(1);
CHECKr(pthread_join(tid, &retval));
ASSERT(retval == (void *)EINTR);
ASSERT(hits == 2);
SUCCEED;
}
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