Blocks the current thread until the mutex pointed to by mutex is locked or until the TIME_UTC based absolute calendar time point pointed to by time_point has been reached.
Since this function takes an absolute time, if a duration is required, the calendar time point must be calculated manually.
The behavior is undefined if the current thread has already locked the mutex and the mutex is not recursive.
The behavior is undefined if the mutex does not support timeout.
Prior calls to mtx_unlock on the same mutex synchronize-with this operation (if this operation succeeds), and all lock/unlock operations on any given mutex form a single total order (similar to the modification order of an atomic)
[edit] Parameters mutex - pointer to the mutex to lock time_point - pointer to the absolute calendar time until which to wait for the timeout [edit] Return valuethrd_success if successful, thrd_timedout if the timeout time has been reached before the mutex is locked, thrd_error if an error occurs.
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