[#subprocess-Popen-set_out_buf_cap]
= xref:subprocess.adoc[subprocess]::xref:subprocess/Popen.adoc[Popen]::set_out_buf_cap
:relfileprefix: ../../
:mrdocs:

Sets the capacity of the buffer used to capture the child's output.

== Synopsis

Declared in `<util/subprocess.h>`

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

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cap*
| New output buffer capacity, in bytes.
|===


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