Dario Rexin efe6973293 [Concurrency] Reduce overhead of Task.yield and Task.sleep (#37090) ...

* [Concurrency] Reduce overhead of Task.yield and Task.sleep

Instead of creating a new task, we create a simple job that wraps a Builtin.RawUnsafeContinuation and resumes the continuation when it is executed. The job instance is allocated on the task local allocator, meaning we don't malloc anything.

* Update stdlib/public/Concurrency/Task.swift

Co-authored-by: Konrad `ktoso` Malawski <konrad.malawski@project13.pl>

Co-authored-by: Konrad `ktoso` Malawski <konrad.malawski@project13.pl>

2021-05-10 11:51:20 -07:00

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