[#BloombergLP-ball-AsyncFileObserver-forceRotation]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/AsyncFileObserver.adoc[AsyncFileObserver]::forceRotation
:relfileprefix: ../../../
:mrdocs:

Forcefully perform a log file rotation by this async file observer. Close the current log file, rename the log file if necessary, and open a new log file. This method has no effect if file logging is not enabled. See {Rotated File Naming} for details on filenames of rotated log files.

== Synopsis

Declared in `<ball_asyncfileobserver.h>`

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