diff options
| -rw-r--r-- | tests/sighook.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/tests/sighook.c b/tests/sighook.c index 0cb8de2..893e45c 100644 --- a/tests/sighook.c +++ b/tests/sighook.c @@ -26,6 +26,14 @@ static void alrm_hook(int sig, siginfo_t *info, void *arg) { fetch_add(&count, 1, relaxed); } +/** SH_ONESHOT counter. */ +static atomic size_t shots = 0; + +/** SH_ONESHOT hook. */ +static void alrm_oneshot(int sig, siginfo_t *info, void *arg) { + fetch_add(&shots, 1, relaxed); +} + /** Background thread that receives signals. */ static void *hook_thread(void *ptr) { mutex_lock(&mutex); @@ -67,6 +75,12 @@ void check_sighook(void) { return; } + // Test SH_ONESHOT + struct sighook *oneshot_hook = sighook(SIGALRM, alrm_oneshot, NULL, SH_ONESHOT); + if (!bfs_echeck(oneshot_hook, "sighook(SH_ONESHOT)")) { + goto unhook; + } + // Create a timer that sends SIGALRM every 100 microseconds struct timespec ival = { .tv_nsec = 100 * 1000 }; struct timer *timer = xtimer_start(&ival); @@ -88,7 +102,18 @@ void check_sighook(void) { } // Rapidly register/unregister SIGALRM hooks - while (load(&count, relaxed) < 1000) { + size_t alarms; + while (alarms = load(&count, relaxed), alarms < 1000) { + size_t nshots = load(&shots, relaxed); + bfs_echeck(nshots <= 1); + if (alarms > 1) { + bfs_echeck(nshots == 1); + } + if (alarms >= 500) { + sigunhook(oneshot_hook); + oneshot_hook = NULL; + } + struct sighook *next = sighook(SIGALRM, alrm_hook, NULL, SH_CONTINUE); if (!bfs_echeck(next, "sighook(SIGALRM)")) { break; @@ -112,6 +137,7 @@ untime: // Stop the timer xtimer_stop(timer); unhook: - // Unregister the SIGALRM hook + // Unregister the SIGALRM hooks + sigunhook(oneshot_hook); sigunhook(hook); } |