1 /* $OpenBSD: kevent.c,v 1.1 2011/09/13 23:50:17 fgsch Exp $ */
2 /*
3 * Federico G. Schwindt <fgsch@openbsd.org>, 2011. Public Domain.
4 */
5 #include <sys/types.h>
6 #include <sys/event.h>
7 #include <sys/time.h>
8 #include <pthread.h>
9 #include <signal.h>
10 #include <unistd.h>
11 #include "test.h"
12
13 volatile sig_atomic_t hits = 0;
14
15 void
handler(int sig)16 handler(int sig)
17 {
18 hits++;
19 }
20
21 void *
thr_kevent(void * arg)22 thr_kevent(void *arg)
23 {
24 struct kevent ev;
25 struct timespec ts = { 10, 0 };
26 int kq;
27
28 CHECKe(kq = kqueue());
29 ASSERT(kevent(kq, NULL, 0, &ev, 1, &ts) == -1);
30 return ((caddr_t)NULL + errno);
31 }
32
33 int
main(int argc,char ** argv)34 main(int argc, char **argv)
35 {
36 struct sigaction sa;
37 pthread_t tid;
38 void *retval;
39
40 bzero(&sa, sizeof(sa));
41 sa.sa_handler = handler;
42 sa.sa_flags = SA_RESTART;
43 CHECKe(sigaction(SIGUSR1, &sa, NULL));
44
45 CHECKr(pthread_create(&tid, NULL, thr_kevent, NULL));
46 sleep(2);
47
48 /* Should interrupt it. */
49 CHECKr(pthread_kill(tid, SIGUSR1));
50 sleep(1);
51
52 CHECKr(pthread_join(tid, &retval));
53 ASSERT(retval == (void *)EINTR);
54 ASSERT(hits == 1);
55 SUCCEED;
56 }
57