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25 lines
779 B
Nim
25 lines
779 B
Nim
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import
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chronos, chronicles/chronos_tools
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export
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chronos_tools
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template awaitWithTimeout*[T](operation: Future[T],
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deadline: Future[void],
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onTimeout: untyped): T =
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let f = operation
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await f or deadline
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if not f.finished:
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# If we don't wait for for the cancellation here, it's possible that
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# the "next" operation will run concurrently to this one, messing up
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# the order of operations (since await/async is not fair)
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await cancelAndWait(f)
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onTimeout
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else:
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f.read
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template awaitWithTimeout*[T](operation: Future[T],
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timeout: Duration,
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onTimeout: untyped): T =
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awaitWithTimeout(operation, sleepAsync(timeout), onTimeout)
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