1 files changed, 65 insertions, 1 deletions

diff --git a/src/libsystemd/sd-event/test-event.c b/src/libsystemd/sd-event/test-event.c
index 408e1679a2..c092e56b7a 100644
--- a/src/libsystemd/sd-event/test-event.c
+++ b/src/libsystemd/sd-event/test-event.c
@@ -156,7 +156,7 @@ static int exit_handler(sd_event_source *s, void *userdata) {
         return 3;
 }
 
-int main(int argc, char *argv[]) {
+static void test_basic(void) {
         sd_event *e = NULL;
         sd_event_source *w = NULL, *x = NULL, *y = NULL, *z = NULL, *q = NULL, *t = NULL;
         static const char ch = 'x';
@@ -244,6 +244,70 @@ int main(int argc, char *argv[]) {
         safe_close_pair(b);
         safe_close_pair(d);
         safe_close_pair(k);
+}
+
+static int last_rtqueue_sigval = 0;
+static int n_rtqueue = 0;
+
+static int rtqueue_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
+        last_rtqueue_sigval = si->ssi_int;
+        n_rtqueue ++;
+        return 0;
+}
+
+static void test_rtqueue(void) {
+        sd_event_source *u = NULL, *v = NULL, *s = NULL;
+        sd_event *e = NULL;
+
+        assert_se(sd_event_default(&e) >= 0);
+
+        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2, -1) >= 0);
+        assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0);
+        assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0);
+        assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0);
+
+        assert_se(sd_event_source_set_priority(v, -10) >= 0);
+
+        assert(sigqueue(getpid(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0);
+        assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0);
+        assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0);
+        assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0);
+        assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0);
+
+        assert_se(n_rtqueue == 0);
+        assert_se(last_rtqueue_sigval == 0);
+
+        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+        assert_se(n_rtqueue == 1);
+        assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */
+
+        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+        assert_se(n_rtqueue == 2);
+        assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */
+
+        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+        assert_se(n_rtqueue == 3);
+        assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */
+
+        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
+        assert_se(n_rtqueue == 4);
+        assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */
+
+        assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */
+        assert_se(n_rtqueue == 4);
+        assert_se(last_rtqueue_sigval == 1);
+
+        sd_event_source_unref(u);
+        sd_event_source_unref(v);
+        sd_event_source_unref(s);
+
+        sd_event_unref(e);
+}
+
+int main(int argc, char *argv[]) {
+
+        test_basic();
+        test_rtqueue();
 
         return 0;
 }