Dmitriy Ryajov 3878a95b23 Semaphore cancellations (#503) ... * add proper cancelation handling * remove cancelled futures explicitly * use fifo to keep proper order * add out of order cancelations test * make count public * use `new` instead of `init` * remove private `queue` from tests * expose count as a readonly prop * use `delete()` to preserve seq order		2021-01-14 10:11:12 +01:00
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semaphore.nim	Semaphore cancellations (#503)	2021-01-14 10:11:12 +01:00