[#BloombergLP-bsls-BslLockImpl_pthread-lock]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bsls.adoc[bsls]::xref:BloombergLP/bsls/BslLockImpl_pthread.adoc[BslLockImpl&lowbar;pthread]::lock
:relfileprefix: ../../../
:mrdocs:

Acquire the lock on this object&period; If the lock on this object is currently held by another thread, then suspend execution of the calling thread until the lock can be acquired&period; The behavior is undefined unless the calling thread does not already hold the lock on this object&period; Note that deadlock may result if this method is invoked while the calling thread holds the lock on the object&period;

== Synopsis

Declared in `&lt;bsls&lowbar;bsllockimpl&lowbar;pthread&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
lock();
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