[#BloombergLP-bslmt-MutexImpl-06-NativeType]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmt.adoc[bslmt]::xref:BloombergLP/bslmt/MutexImpl-06.adoc[MutexImpl<Platform::PosixThreads>]::NativeType
:relfileprefix: ../../../
:mrdocs:

The underlying OS‐level type. Exposed so that other `bslmt` components can operate directly on this mutex.

== Synopsis

Declared in `<bslmt_muteximpl_pthread.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef pthread_mutex_t NativeType;
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