[#BloombergLP-bdlmt-EventScheduler-start-0fe]
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Begin dispatching events on this scheduler using default attributes for the dispatcher thread. Return 0 on success, and a nonzero value otherwise. If another thread is currently executing `stop`, wait until the dispatcher thread stops before starting a new one. If this scheduler has already started (and is not currently being stopped by another thread) then this invocation has no effect and 0 is returned. The created thread will use the `eventSchedulerName` supplied at construction if it is not empty, otherwise "bdl.EventSched". The behavior is undefined if this method is invoked in the dispatcher thread (i.e., in a job executed by this scheduler). Note that any event whose time has already passed is pending and will be dispatched immediately.

== Synopsis

Declared in `<bdlmt_eventscheduler.h>`

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