[#BloombergLP-bdlmt-FixedThreadPool-start]
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Spawn threads until there are `numThreads()` processing threads. On success, enable enqueuing and return 0. Otherwise, join all threads (ensuring `false == isStarted()`) and return ‐1. If the thread pool was already started (`isStarted()` is `true`), this method has no effect.

== Synopsis

Declared in `<bdlmt_fixedthreadpool.h>`

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