asyncifygood first bughelp wantedmultithreading
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描述
[Forked from discussion in #9579]
Rather than disallowing blocking on the main thread and giving an escape hatch in form of a setting that still allows it, we could transform pthread_join and friends via Asyncify instead and use Atomics.waitAsync under the hood.
This way the main browser thread wouldn't really be blocked, but the code would be still backwards-compatible and properly wait for thread to finish execution as user expects.