C++ (Cpp) arv_rtkit_make_realtime Examples

Example #1

File: arvrealtime.c Project: epicsdeb/aravis

gboolean
arv_make_thread_realtime (int priority)
{
	struct sched_param p;

	memset(&p, 0, sizeof(p));
	p.sched_priority = priority;

	if (sched_setscheduler(_gettid (), SCHED_RR|SCHED_RESET_ON_FORK, &p) < 0
	    && errno == EPERM) {
		struct rlimit rlim;
		GDBusConnection *bus;
		GError *error = NULL;

		memset(&rlim, 0, sizeof(rlim));
		rlim.rlim_cur = rlim.rlim_max = 100000000ULL; /* 100ms */
		if ((setrlimit(RLIMIT_RTTIME, &rlim) < 0)) {
			arv_warning_misc ("Failed to set RLIMIT_RTTIME: %s", strerror (errno));
			return FALSE;
		}

		bus = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &error);
		if (error != NULL) {
			arv_warning_misc ("Failed to connect to system bus: %s", error->message);
			g_error_free (error);
			return FALSE;
		}

		arv_rtkit_make_realtime(bus, _gettid (), p.sched_priority, &error);
		g_object_unref (bus);

		if (error != NULL) {
			arv_warning_misc ("Failed to connect make realtime: %s", error->message);
			g_error_free (error);
			return FALSE;
		}

		arv_debug_misc ("Thread became realtime with priority %d", priority);

		return TRUE;
	}

	return TRUE;
}

Example #2

File: realtimetest.c Project: Amomum/aravis

int main(int argc, char *argv[]) {
        GDBusConnection *bus;
	GError *error = NULL;
        int max_realtime_priority, min_nice_level;
	long long rttime_usec_max;
	struct rlimit rlim;

	bus = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &error);
	if (!G_IS_DBUS_CONNECTION (bus)) {
		fprintf (stderr, "Failed to connect to system bus: %s\n", error->message);
		g_error_free (error);
		return EXIT_FAILURE;
	}

	max_realtime_priority = arv_rtkit_get_max_realtime_priority (bus, &error);
	if (error != NULL) {
		fprintf (stderr, "Failed to get MaxRealtimePriority: %s\n", error->message);
		g_error_free (error);
		error = NULL;
	} else
		printf ("MaxRealtimePriority = %d\n", max_realtime_priority);

	min_nice_level = arv_rtkit_get_min_nice_level (bus, &error);
	if (error != NULL) {
		fprintf (stderr, "Failed to get MinNiceLevel: %s\n", error->message);
		g_error_free (error);
		error = NULL;
	} else
		printf ("MinNiceLevel = %d\n", min_nice_level);

	rttime_usec_max = arv_rtkit_get_rttime_usec_max (bus, &error);
	if (error != NULL) {
		fprintf (stderr, "Failed to get RTTimeUSecMax: %s\n", error->message);
		g_error_free (error);
		error = NULL;
	} else
		printf ("RTTimeUSecMax = %Ld\n", rttime_usec_max);

	memset(&rlim, 0, sizeof(rlim));
	rlim.rlim_cur = rlim.rlim_max = 100000000ULL; /* 100ms */
	if ((setrlimit(RLIMIT_RTTIME, &rlim) < 0))
		fprintf(stderr, "Failed to set RLIMIT_RTTIME: %s\n", strerror(errno));

	print_status("before");

	arv_rtkit_make_high_priority (bus, 0, -10, &error);
	if (error != NULL) {
		fprintf (stderr, "Failed to become high priority: %s\n", error->message);
		g_error_free (error);
		error = NULL;
	} else
		printf ("Successfully became high priority\n");

	print_status("after high priority");

	arv_rtkit_make_realtime (bus, 0, 10, &error);
	if (error != NULL) {
		fprintf (stderr, "Failed to get become realtime: %s\n", error->message);
		g_error_free (error);
		error = NULL;
	} else
		printf ("Successfully became realtime\n");

	print_status("after realtime");

	g_object_unref (bus);

        return EXIT_SUCCESS;
}