1 files changed, 47 insertions, 0 deletions
diff --git a/lib/mlibc/tests/posix/posix-timer.c b/lib/mlibc/tests/posix/posix-timer.c
new file mode 100644
index 0000000..d097818
--- /dev/null
+++ b/lib/mlibc/tests/posix/posix-timer.c
@@ -0,0 +1,47 @@
+#include <assert.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <time.h>
+
+int main() {
+	struct sigevent evp;
+	memset(&evp, 0, sizeof(evp));
+
+	sigset_t set;
+	sigemptyset(&set);
+	sigaddset(&set, SIGUSR1);
+	sigprocmask(SIG_BLOCK, &set, 0);
+	evp.sigev_notify = SIGEV_SIGNAL;
+	evp.sigev_signo = SIGUSR1;
+
+	struct timeval start;
+	gettimeofday(&start, NULL);
+
+	timer_t timer;
+	if (timer_create(CLOCK_MONOTONIC, &evp, &timer)) {
+		perror("timer_create");
+		exit(1);
+	}
+
+	struct itimerspec spec;
+	memset(&spec, 0, sizeof(spec));
+	spec.it_value.tv_sec = 1;
+	spec.it_value.tv_nsec = 0;
+
+	int sig;
+	timer_settime(timer, 0, &spec, NULL);
+	sigwait(&set, &sig);
+
+	struct timeval end;
+	gettimeofday(&end, NULL);
+	timer_delete(timer);
+
+	double diff = end.tv_sec - start.tv_sec;
+	diff += (end.tv_usec - start.tv_usec) / 1000000.0;
+	assert(diff >= 1.0);
+
+	return 0;
+}