[#ThreadPool-Start]
= xref:ThreadPool.adoc[ThreadPool]::Start
:relfileprefix: ../
:mrdocs:

Start worker threads.

== Synopsis

Declared in `<util/threadpool.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7f2e2046a148)]]
void
Start(int num_workers);
----

== Description

Creates and launches `num_workers` threads that begin executing tasks from the queue. If the pool is already started, throws.

Must be called from a controller (non‐worker) thread.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *num_workers*
| Number of worker threads to create and launch.
|===


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