AlarmManagerService: explain some timerfd_create() failures (dd4f59a7) · Commits · e / os / android_frameworks_base

services/core/jni/com_android_server_AlarmManagerService.cpp

+27 −2

Original line number	Diff line number	Diff line
		@@ -298,6 +298,32 @@ static int wall_clock_rtc()
		return -1;
		}

		static void log_timerfd_create_error(clockid_t id)
		{
		if (errno == EINVAL) {
		switch (id) {
		case CLOCK_REALTIME_ALARM:
		case CLOCK_BOOTTIME_ALARM:
		ALOGE("kernel missing required commits:");
		ALOGE("https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6cffe00f7d4e24679eae6b7aae4caaf915288256");
		ALOGE("https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11ffa9d6065f344a9bd769a2452f26f2f671e5f8");
		LOG_ALWAYS_FATAL("kernel does not support timerfd_create() with alarm timers");
		break;

		case CLOCK_BOOTTIME:
		ALOGE("kernel missing required commit:");
		ALOGE("https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4a2378a943f09907fb1ae35c15de917f60289c14");
		LOG_ALWAYS_FATAL("kernel does not support timerfd_create(CLOCK_BOOTTIME)");
		break;

		default:
		break;
		}
		}

		ALOGE("timerfd_create(%u) failed: %s", id, strerror(errno));
		}

		static jlong android_server_AlarmManagerService_init(JNIEnv*, jobject)
		{
		int epollfd;
		@@ -313,8 +339,7 @@ static jlong android_server_AlarmManagerService_init(JNIEnv*, jobject)
		for (size_t i = 0; i < fds.size(); i++) {
		fds[i] = timerfd_create(android_alarm_to_clockid[i], 0);
		if (fds[i] < 0) {
		ALOGE("timerfd_create(%u) failed: %s", android_alarm_to_clockid[i],
		strerror(errno));
		log_timerfd_create_error(android_alarm_to_clockid[i]);
		close(epollfd);
		for (size_t j = 0; j < i; j++) {
		close(fds[j]);