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
handler(int sig)13 handler(int sig)
14 {
15 hits++;
16 }
17
18 void *
thr_sleep(void * arg)19 thr_sleep(void *arg)
20 {
21 return ((caddr_t)NULL + sleep(5));
22 }
23
24 void *
thr_join(void * arg)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
main(int argc,char ** argv)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