Closures not thread-safe?

[Frantzius, Jörg]

Hi,

it begins to dawn on me that closures aren’t thread-safe, at least that would explain crosstalk issues we’re seeing in JMeter tests (with a single engine for multiple threads).

It would be good to know (and I guess for others as well) if somebody can confirm this?

Perhaps thread-safety of closures was thinkable if Nashorn somehow stored closure state in ThreadLocals, but I guess that’s neither happening nor planned?

From what I understand, closures are pervasive in Javascript code out there, and anybody using such code will currently be forced to use engine-per-thread.

Thanks for any hints,
Jörg


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Dipl. Inf. Jörg von Frantzius, Technical Director

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