mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
24 lines
380 B
Ruby
24 lines
380 B
Ruby
|
require "fcntl"
|
||
|
|
class IO
|
||
|
|
def nonblock?
|
||
|
|
(fcntl(Fcntl::F_GETFL) & File::NONBLOCK) != 0
|
||
|
|
end
|
||
|
|
|
||
|
|
def nonblock=(nb)
|
||
|
|
f = fcntl(Fcntl::F_GETFL)
|
||
|
|
if nb
|
||
|
|
f |= File::NONBLOCK
|
||
|
|
else
|
||
|
|
f &= ~File::NONBLOCK
|
||
|
|
end
|
||
|
|
fcntl(Fcntl::F_SETFL, f)
|
||
|
|
end
|
||
|
|
|
||
|
|
def nonblock(nb = true)
|
||
|
|
nb, self.nonblock = nonblock?, nb
|
||
|
|
yield
|
||
|
|
ensure
|
||
|
|
self.nonblock = nb
|
||
|
|
end
|
||
|
|
end
|