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