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| author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-22 08:46:51 +0000 |
|---|---|---|
| committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-22 08:46:51 +0000 |
| commit | 6a65f2b1e479f268489b51a004b6c153c634c68a (patch) | |
| tree | 5e7bae4d2418fd88b152380075eb6a1f21f2401b /test/io | |
| parent | b009de13bf4bb7c96964c404fb56b3503db777fd (diff) | |
| download | ruby-6a65f2b1e479f268489b51a004b6c153c634c68a.tar.gz | |
io + socket: make pipes and sockets nonblocking by default
All normal Ruby IO methods (IO#read, IO#gets, IO#write, ...) are
all capable of appearing to be "blocking" when presented with a
file description with the O_NONBLOCK flag set; so there is
little risk of incompatibility within Ruby-using programs.
The biggest compatibility risk is when spawning external
programs. As a result, stdin, stdout, and stderr are now always
made blocking before exec-family calls.
This change will make an event-oriented MJIT usable if it is
waiting on pipes on POSIX_like platforms.
It is ALSO necessary to take advantage of (proposed lightweight
concurrency (aka "auto-Fiber") or any similar proposal for
network concurrency: https://bugs.ruby-lang.org/issues/13618
Named-pipe (FIFO) are NOT yet non-blocking by default since
they are rarely-used and may introduce compatibility problems
and extra syscall overhead for a common path.
Please revert this commit if there are problems and if I am afk
since I am afk a lot, lately.
[ruby-core:89950] [Bug #14968]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65922 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/io')
| -rw-r--r-- | test/io/nonblock/test_flush.rb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/test/io/nonblock/test_flush.rb b/test/io/nonblock/test_flush.rb index 63e16db5a3..08d129de3f 100644 --- a/test/io/nonblock/test_flush.rb +++ b/test/io/nonblock/test_flush.rb @@ -53,6 +53,7 @@ class TestIONonblock < Test::Unit::TestCase def test_nonblock IO.pipe {|r, w| + w.nonblock = false assert_equal(false, w.nonblock?) w.nonblock do assert_equal(true, w.nonblock?) |