blob: b740b70a965c765f238ef5cf2bd4166f65cfef88 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
#include <assert.h>
#include <pthread.h>
#include <signal.h>
_Atomic int handler_ready = 0;
_Atomic int thread_signal_ran = 0;
static void sig_handler(int sig, siginfo_t *info, void *ctx) {
(void)sig;
(void)info;
(void)ctx;
thread_signal_ran = 1;
}
static void *worker(void *arg) {
(void)arg;
struct sigaction sa;
sigemptyset(&sa.sa_mask);
sa.sa_sigaction = sig_handler;
sa.sa_flags = SA_SIGINFO;
assert(!sigaction(SIGUSR1, &sa, NULL));
handler_ready = 1;
while (!thread_signal_ran)
;
return NULL;
}
int main() {
pthread_t thread;
assert(!pthread_create(&thread, NULL, &worker, NULL));
while (!handler_ready)
;
assert(!pthread_kill(thread, SIGUSR1));
assert(!pthread_join(thread, NULL));
assert(thread_signal_ran);
return 0;
}
|
