[#BloombergLP-bdlcc-SingleProducerQueueImpl-2constructor-03]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlcc.adoc[bdlcc]::xref:BloombergLP/bdlcc/SingleProducerQueueImpl.adoc[SingleProducerQueueImpl]::SingleProducerQueueImpl
:relfileprefix: ../../../
:mrdocs:

Create a thread‐aware queue with, at least, the specified `capacity`.

== Synopsis

Declared in `<bdlcc_singleproducerqueueimpl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
SingleProducerQueueImpl(
    std::size_t capacity,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0);
----

== Description

Optionally specify a `basicAllocator` used to supply memory. If `basicAllocator` is 0, the currently installed default allocator is used.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *capacity*
| minimum number of elements the queue can hold
| *basicAllocator*
| memory allocator; null uses the default
|===


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