[#BloombergLP-bdlma-CountingAllocator-numBytesInUse]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlma.adoc[bdlma]::xref:BloombergLP/bdlma/CountingAllocator.adoc[CountingAllocator]::numBytesInUse
:relfileprefix: ../../../
:mrdocs:

Return the number of bytes currently allocated from this object. Note that `numBytesInUse() <= numBytesTotal()`.

== Synopsis

Declared in `<bdlma_countingallocator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64]
numBytesInUse() const;
----


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