[#absl-Mutex-lock-025]
= xref:absl.adoc[absl]::xref:absl/Mutex.adoc[Mutex]::lock
:relfileprefix: ../../
:mrdocs:

Blocks the calling thread, if necessary, until this `Mutex` is free, and then acquires it exclusively.

== Synopsis

Declared in `<absl/synchronization/mutex.h>`

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


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