42 lines
773 B
Nim
Executable file
42 lines
773 B
Nim
Executable file
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type
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TMsgKind = enum
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mLine, mEof
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TMsg = object {.pure, final.}
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case k: TMsgKind
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of mEof: backTo: TThreadId[int]
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of mLine: data: string
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var
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consumer: TThread[TMsg]
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printedLines = 0
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proc consume() {.thread.} =
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while true:
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var x = recv[TMsg]()
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if x.k == mEof:
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x.backTo.send(printedLines)
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break
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echo x.data
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discard atomicInc(printedLines)
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proc produce() =
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var m: TMsg
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var input = open("readme.txt")
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while not endOfFile(input):
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if consumer.ready:
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m.data = input.readLine()
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consumer.send(m)
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close(input)
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m.k = mEof
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m.backTo = mainThreadId[int]()
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consumer.send(m)
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var result = recv[int]()
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echo result
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createThread(consumer, consume)
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produce()
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joinThread(consumer)
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echo printedLines
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