diff options
Diffstat (limited to 'trunk/ext/io/wait/lib/nonblock.rb')
-rw-r--r-- | trunk/ext/io/wait/lib/nonblock.rb | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/trunk/ext/io/wait/lib/nonblock.rb b/trunk/ext/io/wait/lib/nonblock.rb new file mode 100644 index 0000000000..2103fdf25b --- /dev/null +++ b/trunk/ext/io/wait/lib/nonblock.rb @@ -0,0 +1,23 @@ +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 if defined?(Fcntl::F_GETFL) |