/*      $OpenBSD: pthread_join.c,v 1.1 2011/10/01 10:26:59 fgsch Exp $  */
/*
 * Federico G. Schwindt <fgsch@openbsd.org>, 2011. Public Domain.
 */
#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_sleep(void *arg)
{
        return ((caddr_t)NULL + sleep(5));
}

void *
thr_join(void *arg)
{
        pthread_t tid = *(pthread_t *)arg;
        void *retval;

        CHECKr(pthread_join(tid, &retval));
        return (retval);
}

int
main(int argc, char **argv)
{
        struct sigaction sa;
        pthread_t tid[2];
        void *retval;

        bzero(&sa, sizeof(sa));
        sa.sa_handler = handler;
        CHECKe(sigaction(SIGUSR1, &sa, NULL));

        CHECKr(pthread_create(&tid[0], NULL, thr_sleep, NULL));
        CHECKr(pthread_create(&tid[1], NULL, thr_join, &tid[0]));
        sleep(2);

        CHECKr(pthread_kill(tid[1], SIGUSR1));
        sleep(2);

        ASSERT(hits == 1);
        CHECKr(pthread_join(tid[1], &retval));
        ASSERT(retval == (void *)0);
        SUCCEED;
}