[#BloombergLP-bslmt-ThroughputBenchmarkResult-numThreads]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmt.adoc[bslmt]::xref:BloombergLP/bslmt/ThroughputBenchmarkResult.adoc[ThroughputBenchmarkResult]::numThreads
:relfileprefix: ../../../
:mrdocs:

Return the number of threads in the specified `threadGroupIndex`.

== Synopsis

Declared in `<bslmt_throughputbenchmarkresult.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
numThreads(int threadGroupIndex) const;
----

== Description

The behavior is undefined unless `0 <= threadGroupIndex < numThreadGroups()`.

== Return Value

number of threads in the specified thread group

== Parameters

[cols="1,4"]
|===
| Name| Description
| *threadGroupIndex*
| index of the thread group
|===


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