[#absl-Barrier-2constructor-0b9]
= xref:absl.adoc[absl]::xref:absl/Barrier.adoc[Barrier]::Barrier
:relfileprefix: ../../
:mrdocs:

Constructs a barrier for a fixed number of participating threads.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
Barrier(int num_threads);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *num_threads*
| The number of threads that will participate in the barrier.
|===


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