BloombergLP::bslmt::FastPostSemaphore

This class implements a semaphore type, optimized for post, for thread synchronization.

Synopsis

Declared in <bslmt_fastpostsemaphore.h>

class FastPostSemaphore;

Name

Description

Status codes returned by semaphore operations.

Name

Description

Constructors

Return the clock type used for timeouts.

Disable waiting on this semaphore.

Enable waiting on this semaphore. If the semaphore is not disabled, this call has no effect.

Return an odd value if this semaphore is wait disabled, and an even value otherwise.

Return the current value (count > 0 ? count : 0) of this semaphore.

Return true if this semaphore is wait disabled, and false otherwise. Note that the semaphore is created in the "wait enabled" state.

post overloads

Atomically increase the count of this semaphore by the specified value.

Take up to maximumToTake units from this semaphore.

If the count of this semaphore is positive, reduce the count to 0 and return the original value of the count. Otherwise, do nothing and return 0.

Block until this semaphore can be acquired or absTime expires.

Attempt to decrement this semaphore's count without blocking.

Block until this semaphore's count is positive, then decrement it.

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