[#util-ImmediateTaskRunner]
= xref:util.adoc[util]::ImmediateTaskRunner
:relfileprefix: ../
:mrdocs:

Task runner that processes each callback synchronously on insertion.

== Synopsis

Declared in `<util/task_runner.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class ImmediateTaskRunner
    : public xref:util/TaskRunnerInterface.adoc[TaskRunnerInterface]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:util/TaskRunnerInterface.adoc[TaskRunnerInterface]`
| This header provides an interface and simple implementation for a task runner. Another threaded, serial implementation using a queue is available in the scheduler module's SerialTaskRunner.
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:util/ImmediateTaskRunner/flush.adoc[`flush`]  [.small]#[virtual]#
| No‐op; there are never pending events to flush.
| xref:util/ImmediateTaskRunner/insert.adoc[`insert`]  [.small]#[virtual]#
| Runs the callback immediately on the calling thread.
| xref:util/ImmediateTaskRunner/size.adoc[`size`]  [.small]#[virtual]#
| Reports the number of pending events.
|===



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