24 lines
380 B
Ruby
24 lines
380 B
Ruby
require "fcntl"
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class IO
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def nonblock?
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(fcntl(Fcntl::F_GETFL) & File::NONBLOCK) != 0
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end
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def nonblock=(nb)
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f = fcntl(Fcntl::F_GETFL)
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if nb
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f |= File::NONBLOCK
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else
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f &= ~File::NONBLOCK
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end
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fcntl(Fcntl::F_SETFL, f)
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end
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def nonblock(nb = true)
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nb, self.nonblock = nonblock?, nb
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yield
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ensure
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self.nonblock = nb
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end
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end
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