[#CountingSemaphoreGrant]
= CountingSemaphoreGrant
:mrdocs:

RAII‐style semaphore lock

== Synopsis

Declared in `<semaphore_grant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<std::ptrdiff_t LeastMaxValue = std::counting_semaphore<>::max()>
class CountingSemaphoreGrant;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:CountingSemaphoreGrant/2constructor-04.adoc[`CountingSemaphoreGrant`]         [.small]#[constructor]#
| Constructors
| xref:CountingSemaphoreGrant/2destructor.adoc[`~CountingSemaphoreGrant`] [.small]#[destructor]#
| Releases the held slot, if any, on destruction.
| xref:CountingSemaphoreGrant/operator_assign-09.adoc[`operator=`] 
| Assignment operators
| xref:CountingSemaphoreGrant/Acquire.adoc[`Acquire`] 
| Acquires the semaphore, blocking until a slot is available.
| xref:CountingSemaphoreGrant/Release.adoc[`Release`] 
| Releases the held semaphore slot, if any.
| xref:CountingSemaphoreGrant/TryAcquire.adoc[`TryAcquire`] 
| Attempts to acquire the semaphore without blocking.
| xref:CountingSemaphoreGrant/2conversion.adoc[`operator bool`] 
| Reports whether this grant currently holds a semaphore slot.
|===



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