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Block a thread on a conditional variable, with a time limit
int PtCondTimedWait(
pthread_cond_t *cond,
const struct timespec *abstime );
- cond
- The condition variable to wait on.
- abstime
- A pointer to a timespec structure that specifies
the absolute time by which the thread must unblock.
ph
PtCondTimedWait() is an equivalent of
pthread_cond_timedwait()
that uses the Photon library lock instead of a mutex, which has the effect
of an implicit
PtLeave()
when you block, and
PtEnter()
when you unblock.
The calling thread is blocked until:
In all cases, the thread reacquires the Photon library lock before being
unblocked.
- EOK
- Success, or the call was interrupted by a signal.
- EAGAIN
- Insufficient system resources are available to wait on the condition.
- EFAULT
- A fault occurred trying to access the buffers provided.
- EINVAL
- One or more of cond or abstime was invalid.
- ETIMEDOUT
- The time specified by abstime has passed.
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
PtCondWait(),
PtEnter(),
PtLeave()
pthread_cond_timedwait()
in the QNX Neutrino Library Reference
“Threads”
in the Parallel Operations chapter of the
Photon Programmer's Guide
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