merge in nyc-dr1-release history after reset to nyc-dr1-dev
diff --git a/include/utils/Mutex.h b/include/utils/Mutex.h
index 9b0b734..848a600 100644
--- a/include/utils/Mutex.h
+++ b/include/utils/Mutex.h
@@ -64,13 +64,18 @@
status_t tryLock();
#if defined(__ANDROID__)
- // lock the mutex, but don't wait longer than timeoutMilliseconds.
+ // Lock the mutex, but don't wait longer than timeoutNs (relative time).
// Returns 0 on success, TIMED_OUT for failure due to timeout expiration.
//
// OSX doesn't have pthread_mutex_timedlock() or equivalent. To keep
// capabilities consistent across host OSes, this method is only available
// when building Android binaries.
- status_t timedLock(nsecs_t timeoutMilliseconds);
+ //
+ // FIXME?: pthread_mutex_timedlock is based on CLOCK_REALTIME,
+ // which is subject to NTP adjustments, and includes time during suspend,
+ // so a timeout may occur even though no processes could run.
+ // Not holding a partial wakelock may lead to a system suspend.
+ status_t timedLock(nsecs_t timeoutNs);
#endif
// Manages the mutex automatically. It'll be locked when Autolock is
@@ -134,6 +139,7 @@
}
#if defined(__ANDROID__)
inline status_t Mutex::timedLock(nsecs_t timeoutNs) {
+ timeoutNs += systemTime(SYSTEM_TIME_REALTIME);
const struct timespec ts = {
/* .tv_sec = */ static_cast<time_t>(timeoutNs / 1000000000),
/* .tv_nsec = */ static_cast<long>(timeoutNs % 1000000000),
