1 /*	$OpenBSD: pthread_join.c,v 1.1 2011/10/01 10:26:59 fgsch Exp $	*/
2 /*
3  * Federico G. Schwindt <fgsch@openbsd.org>, 2011. Public Domain.
4  */
5 #include <pthread.h>
6 #include <signal.h>
7 #include <unistd.h>
8 #include "test.h"
9 
10 volatile sig_atomic_t hits = 0;
11 
12 void
13 handler(int sig)
14 {
15 	hits++;
16 }
17 
18 void *
19 thr_sleep(void *arg)
20 {
21 	return ((caddr_t)NULL + sleep(5));
22 }
23 
24 void *
25 thr_join(void *arg)
26 {
27 	pthread_t tid = *(pthread_t *)arg;
28 	void *retval;
29 
30 	CHECKr(pthread_join(tid, &retval));
31 	return (retval);
32 }
33 
34 int
35 main(int argc, char **argv)
36 {
37 	struct sigaction sa;
38 	pthread_t tid[2];
39 	void *retval;
40 
41 	bzero(&sa, sizeof(sa));
42 	sa.sa_handler = handler;
43 	CHECKe(sigaction(SIGUSR1, &sa, NULL));
44 
45 	CHECKr(pthread_create(&tid[0], NULL, thr_sleep, NULL));
46 	CHECKr(pthread_create(&tid[1], NULL, thr_join, &tid[0]));
47 	sleep(2);
48 
49 	CHECKr(pthread_kill(tid[1], SIGUSR1));
50 	sleep(2);
51 
52 	ASSERT(hits == 1);
53 	CHECKr(pthread_join(tid[1], &retval));
54 	ASSERT(retval == (void *)0);
55 	SUCCEED;
56 }
57