= kgio - kinder, gentler I/O for Ruby
This is a legacy project, do not use it for new projects. Ruby
2.3 and later should make this obsolete. kgio provides
non-blocking I/O methods for Ruby without raising exceptions on
EAGAIN and EINPROGRESS.
== Features
* Can avoid expensive exceptions on common EAGAIN/EINPROGRESS errors,
returning :wait_readable or :wait_writable instead.
These exceptions got more expensive to hit under Ruby 1.9.2
(but were fixed in Ruby 1.9.3 and later to 1.9.1 performance levels,
which were still bad)
* Returns the unwritten portion of the string on partial writes,
making it ideal for buffering unwritten data.
* May call any method defined to be "kgio_wait_writable" or
"kgio_wait_readable" methods to allow socket/pipe objects to make custom
callbacks (such as adding the file descriptor to a poll set and yielding
the current Fiber).
* Uses {accept4}[http://man7.org/linux/man-pages/man2/accept4.2.html]
on newer GNU/Linux systems to avoid unnecessary fcntl() calls
* Uses MSG_DONTWAIT on GNU/Linux to further avoid unnecessary fcntl() calls
* Compatible with existing Ruby IO objects and Ruby threading.
== Install
The library consists of a C extension so you'll need a Unix-like system
with a C compiler and Ruby development libraries/headers.
You may install it via RubyGems.org:
gem install kgio
You can get the latest source via git from the following locations
(these versions may not be stable):
git://yhbt.net/kgio.git
git://repo.or.cz/kgio.git (mirror)
You may browse the code from the web and download the latest snapshot
tarballs here:
* https://yhbt.net/kgio.git
* http://repo.or.cz/w/kgio.git (gitweb)
See the HACKING guide on how to contribute and build prerelease gems
from git.
== Contact
All feedback (bug reports, user/development dicussion, patches, pull
requests) go to the mailing list/newsgroup. See the ISSUES document for
information on the {kgio mailing list}[mailto:kgio-public@yhbt.net]
For the latest on kgio releases, you may check our NEWS page (and
subscribe to our Atom feed).