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AlarmManagerService: explain some timerfd_create() failures

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am: a0126e0857

Change-Id: I7c9e394d2edcca81e757e351f9de25447b33c2f4
This commit is contained in:
Greg Hackmann
2016-09-21 21:15:13 +00:00
committed by android-build-merger
parent ccafcac745 a0126e0857
commit dd4f59a76f
1 changed files with 27 additions and 2 deletions
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29
services/core/jni/com_android_server_AlarmManagerService.cpp
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@@ -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]);