[#BloombergLP-bslmt-FastPostSemaphore-timedWait-01]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmt.adoc[bslmt]::xref:BloombergLP/bslmt/FastPostSemaphore.adoc[FastPostSemaphore]::timedWait
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:mrdocs:

If this semaphore is initially disabled, or becomes disabled while blocking, return `e_DISABLED` with no effect on the count. Otherwise, block until the count of this semaphore is a positive value or the specified `absTime` timeout expires. If the count of this semaphore is a positive value, return 0 and atomically decrement the count. If the `absTime` timeout expires, return `e_TIMED_OUT` with no effect on the count. Return `e_FAILED` if an error occurs. Errors are unrecoverable. After an error, the semaphore may be destroyed, but any other use has undefined behavior. `absTime` is an _absolute_ time represented as an interval from some epoch, which is determined by the clock indicated at construction (see {Supported Clock‐Types} in the component documentation).

== Synopsis

Declared in `<bslmt_fastpostsemaphore.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
timedWait(xref:BloombergLP/bsls/TimeInterval.adoc[bsls::TimeInterval] const& absTime);
----


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