[fpc-devel] Random thread-safe

Mark Morgan Lloyd markMLl.fpc-devel at telemetry.co.uk
Thu Jan 28 23:51:27 CET 2016

Jonas Maebe wrote:
> Mark Morgan Lloyd wrote:
>> Could I ask for clarification of this please. Are you saying that
>> Random() will crash if called simultaneously by multiple threads, or
>> that it will return suboptimal results?
> It's undefined. The current implementation won't crash, but the results 
> will indeed be suboptimal.
>> If, as an example, I have two threads doing network or comms jobs and I
>> want to introduce jitter in the retries, does that mean that I have to
>> put Random() into a critical section?
> Yes.

Thanks Jonas, noted.

Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

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