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
IO#read_nonblock and IO#write_nonblock take into account
buffered data, so the Linux-only BasicSocket#read_nonblock
and BasicSocket#write_nonblock methods must, too.
This bug was only introduced in r58400
("socket: avoid fcntl for read/write_nonblock on Linux")
and does not affect any stable release.
* ext/socket/basicsocket.c (rsock_init_basicsocket):
* ext/socket/init.c (rsock_s_recvfrom_nonblock):
* ext/socket/init.c (rsock_init_socket_init):
* ext/socket/lib/socket.rb (def read_nonblock):
* ext/socket/lib/socket.rb (def write_nonblock):
* ext/socket/rubysocket.h (static inline void rsock_maybe_wait_fd):
* test/socket/test_basicsocket.rb (def test_read_write_nonblock):
[Feature #13362]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60496 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Binding to a potentially public IP in a test can cause problems
if hit by a random port scanner or something...
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58725 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
On some systems with slower local sockets, :wait_readable may
happen and we should wait on it to drain the socket.
This is a possible fix for https://bugs.ruby-lang.org/issues/13491
* test/socket/test_basicsocket.rb (test_read_write_nonblock):
handle :wait_readable on read_nonblock
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58437 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
On platforms where MSG_DONTWAIT works reliably on all sockets
(so far, I know of Linux), we can avoid fcntl syscalls and
implement IO#write_nonblock and IO#read_nonblock in terms of the
socket-specific send and recv family of syscalls.
This avoids side effects on the socket, and also encourages
generic code to be written in cases where IO wrappers like
OpenSSL::SSL::SSLSocket are used.
Perhaps in the future, side-effect-free non-blocking I/O can
be standard on all files and OSes: https://cr.yp.to/unix/nonblock.html
* ext/socket/lib/socket.rb (read_nonblock, write_nonblock):
Linux-specific wrapper without side effects
[ruby-core:80780] [Feature #13362]
* test/socket/test_basicsocket.rb (test_read_write_nonblock):
new test
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58400 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/rinda/test_rinda.rb (test_make_socket_ipv4_multicast):
The fifth argument to getsockopt(2) should be modified to
indicate the actual size of the value on return,
but not in AIX. This is a know bug. Skip related tests.
* test/rinda/test_rinda.rb (test_ring_server_ipv4_multicast):
ditto.
* test/rinda/test_rinda.rb (test_make_socket_unicast): ditto.
* test/socket/test_basicsocket.rb (test_getsockopt): ditto.
* test/socket/test_sockopt.rb (test_bool): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54004 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
I'm not sure how fstat on fd=-1 can succeed on some systems...
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53253 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/socket/test_basicsocket.rb (socks): use dynamically chosen
port number, and remove never used argument.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49243 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
