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/* $FreeBSD$ */
#include <signal.h>
#include <stdio.h>
#include <err.h>
#include <errno.h>
int received;
void handler(int sig, siginfo_t *si, void *ctx)
{
if (si->si_code != SI_QUEUE)
errx(1, "si_code != SI_QUEUE");
if (si->si_value.sival_int != received)
errx(1, "signal is out of order");
received++;
}
int main()
{
struct sigaction sa;
union sigval val;
int ret;
int i;
sigset_t set;
sa.sa_flags = SA_SIGINFO;
sigemptyset(&sa.sa_mask);
sa.sa_sigaction = handler;
sigaction(SIGRTMIN, &sa, NULL);
sigemptyset(&set);
sigaddset(&set, SIGRTMIN);
sigprocmask(SIG_BLOCK, &set, NULL);
i = 0;
for (;;) {
val.sival_int = i;
ret = sigqueue(getpid(), SIGRTMIN, val);
if (ret == -1) {
if (errno != EAGAIN) {
errx(1, "errno != EAGAIN");
}
break;
}
i++;
}
sigprocmask(SIG_UNBLOCK, &set, NULL);
if (received != i)
errx(1, "error, signal lost");
printf("OK\n");
}
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