ChangeLog from bogomips.org/kgio.git

commit dcaa9f9be83bfd59503033ae8f8eeca79c68c9df
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jul 14 18:54:37 2011 -0700

    kgio 2.6.0 - minor feature update and cleanups

    We now export SOCK_NONBLOCK, SOCK_CLOEXEC constants in the Kgio
    namespace to make kgio_tryaccept/kgio_accept easier-to-use.
    There are also some minor internal cleanups.

commit 8baed92a7c02adcc913bcc7760b77a240b529c63
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jul 14 17:32:10 2011 -0700

    add prototype for rb_thread_blocking_io_region()

    It's no in the public headers, but Ruby 1.9.3 will have it and
    it's still superior to rb_thread_blocking_region() even though
    it's not ideal.

commit 823f41d0f86dda497c166a839d8215275f5d48a0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jul 14 17:29:57 2011 -0700

    missing_accept4: don't use FD_CLOEXEC for SOCK_CLOEXEC emulation

    It's too confusing and may break binary compatibility if the
    system is later upgraded.

commit 142beefba460685fea5b6646e1ba629f9ee207b3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jul 14 17:29:05 2011 -0700

    accept.c: fix RDoc for new Kgio::SOCK_* constants

    We don't want people using the compatibility constants
    since they're actually broken on systems with real accept4().

commit c22f2b5ebccbca8e04aa22821964f67c4a81c675
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jul 6 19:11:47 2011 -0700

    export SOCK_NONBLOCK, SOCK_CLOEXEC constants in Kgio

    It's more reliable than relying on IO::NONBLOCK and
    Fcntl::FD_CLOEXEC constants.  The existing constants are not
    guaranteed to be equivalent to what accept4() takes even
    though the current Linux implementation does it this way.

commit 8e1a53f99a752d8ccba324560a9e52bf6e80680d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jul 6 18:32:39 2011 -0700

    accept.c: reinstate errno after calling my_fileno()

    my_fileno() may change errno on some Rubies

commit e720827b48c3318627d1471ad4ec90d6166520fd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 17 19:01:06 2011 -0700

    doc: update documentation for kgio_addr attribute

    We support IPv6, not just IPv4

commit ce08273658b14dc3d53273b514e46b6e65882bf6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 17 18:35:38 2011 -0700

    doc: call-seq for kgio_wait_writable

    It's there for kgio_wait_readable

commit 72ab71667b2a9c27d1eda73aacb8b86187f317d0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Jun 17 18:10:44 2011 -0700

    ancient_ruby.h: avoid symbol clobbering

    In case the toolchain can't test the feature properly
    or Ruby is upgraded and the symbol is added.

commit 079f9227dce2e69bd3460c783e12fa05c687b7d3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 22:16:15 2011 -0700

    fix misc compiler warnings

    Some installations of Ruby clobbered my usual CFLAGS=-Wall

commit 8fe21f6758bb877efacce1fa6573e72625252585
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 08:30:03 2011 +0000

    make timed kgio_wait_* implementation safer

    IO.select can handle fd >= 1024 safely in some Rubies while
    fd_set may not.  We could use rb_thread_fd_select(), but
    rb_wait_for_single_fd() is available now so the former
    is not worth the maintenance hassle.

commit 9159f70862e3e6a76d821c4a70bc68a603793a49
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 02:39:13 2011 +0000

    Kgio::File includes Kgio::PipeMethods module

    Kgio::File may be used to open FIFOs, so non-blocking
    I/O is still useful in that context.

commit 6d6f704e29d7bf1e95f1c9c60cbab82ec3d430d2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 02:34:49 2011 +0000

    Kgio::File.tryopen runs GC on ENOMEM

    It is possible but unlikely to get ENOMEM on open(2),
    so try to GC away some files.

commit e693b871567119345c2c567bfa2ad46e210d655b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 02:27:06 2011 +0000

    doc: add rdoc for Kgio::File.tryopen

    New feature in 2.5, we now have 100% documentation again.

commit 5550222b389c2971ee98bdd62c749ce228efda06
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 02:12:31 2011 +0000

    kgio_wait_*able: documentation for optional timeout

    New features are better if they're documentated.

commit 3fe0ad91d7a81a84ecc9e75ba8f5162bad30b2ac
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 02:06:32 2011 +0000

    doc: use librelist.org instead of librelist.com

    Non-profit TLD is better sounding for a Free Software
    project.

commit 2e20f8b1a1b74ae5442e44de70196a5e3121c642
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 02:04:00 2011 +0000

    GIT-VERSION-GEN: bump version for new API

commit aa9594b0d38b012729a46fd519fcc369600f4c3e
Merge: bbf9a3b fdde0a2
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Jun 15 02:05:43 2011 +0000

    Merge branch '2.4-stable'

    * 2.4-stable:
      kgio 2.4.2 - OpenSolaris build fix
      extconf: -lnsl and -lsocket checks for OpenSolaris

commit fdde0a27c51134d7a6a9cd1d66d93d1ac6640940
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 14 18:40:07 2011 +0000

    kgio 2.4.2 - OpenSolaris build fix

    * adds -lnsl and -lsocket checks for OpenSolaris

commit 1a7eed4c69abb7bafd3e3dc2acd13e243995e98e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 13 14:26:10 2011 -0700

    extconf: -lnsl and -lsocket checks for OpenSolaris

    Reported via private email.
    (cherry picked from commit d224563823accca63fd871260e3f0dad6758c8d4)

commit bbf9a3bc0ca2d91705e27ad8bfb5c0ed9651a2ef
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jun 14 08:41:32 2011 +0000

    add timeout to kgio_wait_{read,writ}able

    io/wait doesn't have an IO#wait_writable method, yet[1]
    and IO#wait checks FIONREAD which makes it unsuitable
    for certain descriptors.

    This method uses the new rb_wait_for_single_fd() function in
    Ruby 1.9.r.  This internally uses ppoll() under Linux, meaning
    it performs the same regardless of the FD used.

    [1] http://redmine.ruby-lang.org/issues/4647
    [2] http://redmine.ruby-lang.org/issues/4849

commit d224563823accca63fd871260e3f0dad6758c8d4
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jun 13 14:26:10 2011 -0700

    extconf: -lnsl and -lsocket checks for OpenSolaris

    Reported via private email.

commit 83c6584be53d6863e647067ba385b42ed5347cdb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon May 23 11:28:29 2011 -0700

    README: clarify that we only work on Unix-like systems

    We won't waste time with inferior, non-Free platforms.

commit 2ade0059c67a0ae4fa1b416c500169e3ac66bfff
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 20 20:00:15 2011 -0700

    pkg.mk: update to the latest version

    Fixes locale issues with grep and adds check-warnings

commit 8184059bf16d73f0a386ddbf68c4949d1dec3bdf
Merge: a5357ad f656c49
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 20 19:54:48 2011 -0700

    Merge branch '2.4-stable'

    * 2.4-stable:
      kgio 2.4.1 - Kgio.poll avoids EINTR, really
      Kgio.poll: ensure EINTR never gets raised

commit f656c49f77d896cbbb1e684d826472c09dcc2253
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 20 19:53:03 2011 -0700

    kgio 2.4.1 - Kgio.poll avoids EINTR, really

    This release fixes a race condition that could allow
    Errno::EINTR to be raised even though the 2.4.0 release
    was supposed to stop that.

    Nobody uses Kgio.poll, really, so this shouldn't be an issue
    for real code, yet.

commit f809a87f70f0937a87b5d3a83704847daceef4dd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 20 19:50:34 2011 -0700

    Kgio.poll: ensure EINTR never gets raised

    Retry on a zero timeout if we get interrupted
    even if the timeout expired.  This is also what
    IO.select does in Ruby itself.

commit a5357ad014d2eacc99dd7ee46040686cbf1d871c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 20 19:50:34 2011 -0700

    Kgio.poll: ensure EINTR never gets raised

    Retry on a zero timeout if we get interrupted
    even if the timeout expired.  This is also what
    IO.select does in Ruby itself.

commit 605765ded31c784727077dfca573092ba725f717
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 13 17:57:10 2011 -0700

    Kgio.tryopen => Kgio::File.tryopen

    This will allow users to subclass Kgio::File and
    override certain behavior (e.g. overriding "#each").

commit c8bd876fb5086e5b79299869b4c29f1f7f020b4d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 13 17:48:56 2011 -0700

    return Kgio::File for Kgio.tryopen

    This also allows us to return/override #to_path and #path if
    necessary, but so far everything works with MRI 1.8, MRI 1.9,
    and Rubinius.

commit 6cefcff5889cceaa001f76f4be1a1c5e513b241d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri May 13 15:55:50 2011 -0700

    add Kgio.tryopen method

    For the case where a file is readable, it's faster to
    just call open() instead of stat()-ing and then calling
    open().

    open() failures are still relatively cheap, too, they're still
    more expensive than a failed stat() but cheaper than raising
    an exception.

commit ab732113e13f1690fd2c1a18d1c66beb7864d847
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu May 5 15:58:17 2011 -0700

    kgio 2.4.0 - portability fixes and more

    == All supported platforms (*nix + MRI 1.8+, Rubinius)

    * OpenBSD (and possibly other *BSD) fixes, thanks to Jeremy Evans.

    * kgio_accept and kgio_tryaccept now take an optional second argument
      for flags (like the accept4() flags argument).

    == Ruby 1.9-only things

    * Kgio.poll no longer raises Errno::EINTR to match IO.select.

    == Ruby 1.9 trunk things

    * close() on an active FD in a different thread is better
      handled/detected.

    * copy-on-write for strings is properly triggered

commit 43190caf48309fa6aa5423d2d1ae5c320ad07fb5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu May 5 15:38:00 2011 -0700

    test_cross_thread_close: disable on RUBY_ENGINE != "ruby"

    These aren't well-defined semantics...

commit 9c98bbd79f152fd72b257f9c37ca185587e56225
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu May 5 13:24:36 2011 -0700

    read_write: call rb_str_modify() before rb_str_resize()

    This is needed under Ruby trunk if the string is not actually
    resized.

commit c821ebeb851807840f74c4cb4f1a10e691bf222a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu May 5 13:11:53 2011 -0700

    poll: deal with pollset changes on EINTR

    This allows callers to modify the pollset, interrupt
    the polling thread, and then poll with the modified
    pollset.  This is also important for dealing with
    closed IO objects that may have been invalidated
    due to GC, too.

commit f589a9ae18216e1220bea8f905f33051e88f1ae7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu May 5 12:30:45 2011 -0700

    test_tcp_connect: disable wait_writable_set test on non-Linux

    OpenBSD seems to make connect() return success immediately even
    on a non-blocking socket, so it's hard to test for.

    Thanks to Jeremy Evans to reporting the issue under OpenBSD.

    ref: http://mid.gmane.org/20110505181846.GB9693@jeremyevans.local

commit 9900efecb60635ad97b5c00c76eb60252839b1c1
Author: Jeremy Evans <code@jeremyevans.net>
Date:   Thu May 5 11:18:46 2011 -0700

    fix kgio_peek for !KGIO_NOPUSH systems

    Fix kgio_peek by adding an empty kgio_autopush_recv
    if !KGIO_NOPUSH.

    ref: http://mid.gmane.org/20110505181846.GB9693@jeremyevans.local
    Acked-by: Eric Wong <normalperson@yhbt.net>

commit 577cf3056d9f3088145aea51bbc09a0c90a7695e
Author: Jeremy Evans <code@jeremyevans.net>
Date:   Thu May 5 11:49:01 2011 -0700

    connect: zero out hints argument for getaddrinfo

    Some systems like OpenBSD are stricter about irrelevant
    fields than GNU/Linux.

    [ew: commit message]

    ref: http://mid.gmane.org/20110505181846.GB9693@jeremyevans.local
    Acked-by: Eric Wong <normalperson@yhbt.net>

commit 537e4c341137a45330e28376e8f29da7df44808f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed May 4 19:26:38 2011 -0700

    Kgio.poll restarts on interrupt

    This changes our semantics, but it's unlikely anybody
    relies on EINTR right now...

commit f2a3998e0c0f63ad14acf5ccc0141fc6cdce24e3
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 27 11:44:51 2011 -0700

    extconf: remove unnecessary dir_config statement

    I didn't know this about mkmf at the time...

commit 3033f2e8f178c0f150cfd3e2a070570154a27430
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 21 20:08:01 2011 +0000

    doc: improve kgio_accept/kgio_tryaccept docs

    Documenting the new flags options and also improving
    style of the existing class overrides.

commit b885cf9a2ef0864dcebb9bba7b1fcf3eb08f9ae8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 21 20:06:08 2011 +0000

    test_autopush: attempting to fix a timing test...

    Not fun on slow systems, unfortunately...

commit be46333541acd72bde3544a3e86f6ead0bb364d0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Apr 20 18:36:09 2011 -0700

    doc: fix trywrite call-seq

commit 3b48d6c823a7da34c0b37d8eb3c11964c4a3ba89
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Apr 14 02:31:50 2011 +0000

    test_autopush: use assert_in_delta for test

    Some systems are slower than others...

commit f36f7584b766cb5d558fcfa94ea639e6090bcb54
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Apr 11 18:21:09 2011 +0000

    gemspec: bump wrongdoc version

commit 212f6fdfe51e2167d362686bb2622ce04e6e5de5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Apr 11 18:20:27 2011 +0000

    gemspec: remove unnecessary require_paths

    RubyGems handles it already

commit fefd652d6cc5825bebbe164a360c4a06b1399dcb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Apr 10 07:27:40 2011 +0000

    add test for cross thread close

    Ruby 1.9.3dev has better support for it

commit 983e8ff915118d00b683109df0834733b485086d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Apr 10 07:04:41 2011 +0000

    read_write: detect closed fd on EINTR

    Another thread may have killed the descriptor.

commit 01949865e2715b487e098dbc60ba3ae7a01a3b54
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Apr 10 06:07:55 2011 +0000

    accept: better detect closed files on EINTR/EAGAIN

    Another thread may have killed the acceptor object.

commit 59782a15d0be87130934cbecb34ed639be68b44a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Mar 20 16:27:55 2011 -0700

    *accept methods can take flags argument, like accept4()

    This allows applications to not rely on global accept4_flags

commit 0ef079617b7d71cc26574247918c4a3e18454b21
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Mar 19 18:29:15 2011 -0700

    accept: prepare optional flags argument to accept() wrappers

    Don't force people to rely on global flags, there may be
    blocking parts of an otherwise non-blocking program...

commit f8b8b3f73d238d4c29368b4a0f768c5afb03d43d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Mar 17 14:06:45 2011 -0700

    HACKING: updates for wrongdoc vs rdoc

commit c79b5f9037ce69fb3ebce470a14af505aa1c8f5a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Mar 15 12:00:52 2011 +0000

    kgio 2.3.3 - minor fixes

    We no longer over-allocate memory for Kgio.poll (1.9.x-only).
    Under Ruby 1.9.3dev, we also use rb_thread_io_blocking_region
    to properly deal with cross-thread IO#close.

commit 82a3e7d24e3cd51f15df593590986b7c5d0834aa
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Mar 14 19:35:01 2011 +0000

    poll: fix over-allocation for poll(2)

    Oops, fortunately we allocated too much and not too little.

commit 6299ef55e20454eaca0b9860ac4a9bd6ddd143a7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Mar 14 19:35:01 2011 +0000

    use rb_thread_blocking_io_region if possible

    It's in Ruby 1.9.3dev and tracks waiting FDs on blocked threads.

commit 59ed57abf542b89babf595e5508cba42ceb9fd47
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Feb 25 16:48:11 2011 +0000

    doc: more consistent references for kgio_wait_*able methods

    Much nicer this way...

commit 88ae3fb48de345a3a102ac4d17bb71e8a4691230
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 15 08:55:25 2011 -0800

    kgio 2.3.2 - OpenBSD build fix

    Thanks to Jeremy Evans, this release fixes the build under OpenBSD.

commit 8556c2ccf64840a080a928312d8feed2834d4d29
Author: Jeremy Evans <code@jeremyevans.net>
Date:   Mon Feb 14 17:03:53 2011 -0800

    Fix build on OpenBSD

    OpenBSD's getnameinfo(3) requires the sys/types.h header file, and
    including it should not cause a problem for other OSes.

    Acked-by: Eric Wong <normalperson@yhbt.net>

commit 6d19ebb3a917b566830f8d33e95b1eea2e99658d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Feb 13 16:50:13 2011 -0800

    kgio 2.3.1 - compatibility fix

    * connect.c: disable AI_NUMERICSERV

      It's not needed since we already verify the service is a
      numeric port.  AI_NUMERICSERV is not available in older glibc
      (<2.3.4) and probably other old systems.

commit b30aa658d7b4d946427119b23cfc264cc7172149
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Feb 13 16:33:29 2011 -0800

    connect.c: disable AI_NUMERICSERV

    It's not needed since we already verify the service is a
    numeric port.  AI_NUMERICSERV is not available in older glibc
    (<2.3.4) and probably other old systems.

commit f74bcf37ed31611d14aba2d4b4518c6a3dea0f40
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 9 10:10:36 2011 +0000

    kgio 2.3.0 - MSG_PEEK and poll(2) support

    recv() with MSG_PEEK for sockets is added with the try*
    interface.  SocketMethods#kgio_trypeek and
    SocketMethods#kgio_peek or Kgio.trypeek for non-Kgio-enabled
    sockets.

    For Ruby 1.9 only: poll(2) is exposed via the Kgio.poll
    singleton method and should provide an alternative for IO.select
    users.

    Both of these new features should work well on modern Unix-like
    operating systems.

commit 00d1bc89ed3811701195bf5ddb400a0a0067126f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 8 14:11:45 2011 -0800

    move poll support checks to kgio.h

    We may use poll elsewhere...

commit 257b090af54e6a1cecd44325f8664c4c682a6740
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 8 13:56:39 2011 -0800

    pkg.mk: update to the latest

    * Fixes Ruby 1.9.3dev deprecation warnings
    * Fixes some documentation dependency issues
    * Allows RUBY_TEST_OPTS to be passed to unit tests

commit d8616b605ad4d83b69e2679e1c210e476cc18e00
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 8 13:50:55 2011 -0800

    doc: fully RDoc all methods and classes

    Whee!

commit 3f6bffb4c4297df48a69d146243fbe5ba8040cb5
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 8 13:50:01 2011 -0800

    doc: fix accept -> tryaccept copy+paste error

    Oops

commit 823e8978b38dcfb642e5059e879af4209ebba0f1
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 8 13:36:56 2011 -0800

    README: fix download link/ref

commit 5c480aee3067006b5da6d45b7de41d8401b70848
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 8 10:41:51 2011 +0000

    preliminary poll(2) support

    It's a nice alternative to IO.select for higher-numbered
    file descriptors, especially sparse ones.  Our interface
    also generates less garbage than IO.select does.

commit 47653194bf6ad53b9f5fca1b266c30855df5ebbd
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Feb 6 21:56:35 2011 +0000

    add support for recv() with MSG_PEEK

    Kgio.trypeek, kgio_trypeek and kgio_peek methods are added
    for using with sockets.

commit 75a7da2bd757617995f5492df1205e4a3459618b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Feb 3 18:46:21 2011 -0800

    kgio 2.2.0 - kinder, gentler I/O for the Internets

    * sockets accept()ed by a TCP_NOPUSH/TCP_CORK listener
      automatically flush on kgio_*read calls if there is pending
      data.  "Kgio.autopush = false" disables this globally,
      and Kgio::Socket also get "kgio_autopush=" to enable/disable
      on a per-object individual basis.

    * ECONNRESET exceptions get empty backtraces for kgio_*read.
      There's nothing a programmer can do about these, so there's
      no point in going through the expensive backtrace generation
      process.

    * Kgio.try* singleton methods added for working with non-Kgio
      enhanced objects.  No more needing to use Object#extend
      and blowing away your method cache to make existing I/O
      objects kinder and gentler.

    * IPv6 support should be complete, systems without a native
      getaddrinfo(3) are now unsupported (and will remain so
      unless somebody complains).

    There should be no other backwards-incompatible changes other
    than requiring getaddrinfo(3) and friends for IPv6 support.

commit c8fb5aa33262a455997ff6a57659a8d125f36d66
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Feb 3 14:28:11 2011 -0800

    add SocketMethods#kgio_addr!

    This refreshes (or sets) the @kgio_addr ivar for sockets
    that didn't go through kgio_accept or kgio_tryaccept.

commit cff0dd2f73acc73f721b2a589af9e37baedd2489
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Feb 2 13:56:31 2011 -0800

    fix typos in ipv6 test case

    Oops, RTFE :P

commit 17abe6ce8f01810022b948c71de0026b4ac89597
Author: Eric Wong <e@yhbt.net>
Date:   Wed Feb 2 21:33:28 2011 +0000

    add proper IPv6 support

    No extra #ifdefs, we just won't support old systems without
    getaddrinfo() and friends anymore.  I doubt anybody still has
    them...

commit 879f2f0ee9133f34ec3e24141bdb4936e3408d3a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 1 14:00:07 2011 -0800

    avoid re-interning if GCC is not used (or under 1.8)

    Needless calls to rb_intern are wasteful in even semi-frequently
    used code.

commit 499f158c74b7c455dca08fc30be88cb699ee24c6
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Feb 1 13:58:20 2011 -0800

    kgio_*read: empty backtrace for ECONNRESET

    There's nothing a programmer can do about ECONNRESET
    so just make the exception cheaper to raise so it
    can still be logged.

commit 36f69750cd69cbf892580da04be6675e23d92f6f
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 18:39:31 2011 -0800

    add singleton methods for non-Kgio objects

    This allows people to more easily use Kgio in existing apps.

commit 37e50a9a5fcd45242373379c0dc61ebf8ff609af
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 18:27:24 2011 -0800

    autopush: enable accessors for client sockets

    Might as well allow clients to efficiently handle
    TCP_CORK/TCP_NOPUSH, too.

commit d4773fc63a847119004c17a1b8803a815f99d98a
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 17:34:07 2011 -0800

    autopush: enable this by default

    TCP_CORK (and presuably TCP_NOPUSH) aren't remotely useful in
    Rainbows! without this and there's almost no overhead for MRI,
    either.

commit 8a1fc65c88dee174940735bb46074c72ac47ce61
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 17:05:48 2011 -0800

    autopush: optimize away ivar usage under MRI

    We know that all versions of MRI have a small RFile structure
    that is allocated in the same object slots as other Ruby types
    and also zeroed on allocation.

    This optimization enables us to fall back to using ivars in
    case MRI changes or if we're used on other Rubies.

commit 6479b6d3934b8930910e0057f516aa019dd7a8c7
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 15:18:33 2011 -0800

    autopush: enable for TCP_NOPUSH under FreeBSD

    Hopefully it works for people who use TCP_NOPUSH...

commit 15744a90cda72e9007914cd2a78b0b2949193479
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 13:58:53 2011 -0800

    autopush: simplify implementation and just use ivars

    Duh...

commit 313d2bb8d37dbc5602e464def90b3e7fa9f60924
Author: Eric Wong <normalperson@yhbt.net>
Date:   Mon Jan 31 13:03:02 2011 -0800

    rename nopush_smart to autopush

    This is probably a better name for it, libautocork is a nice
    name even though we won't use it directly.

commit 910f6f3df099c04fcd55bd6b20785cce69cb36ae
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jan 27 19:43:39 2011 -0800

    preliminary implementation of "smart_nopush"

    It only supports TCP_CORK under Linux right now.

    We use a very basic strategy to use TCP_CORK semantics optimally
    in most TCP servers:  On corked sockets, we will uncork on recv()
    if there was a previous send().  Otherwise we do not fiddle
    with TCP_CORK at all.

    Under Linux, we can rely on TCP_CORK being inherited in an
    accept()-ed client socket so we can avoid syscalls for each
    accept()-ed client if we already know the accept() socket corks.

    This module does NOTHING for client TCP sockets, we only deal
    with accept()-ed sockets right now.

commit ec91ac3d8c8d9236ba0cd01794c9c4a3ee3f7eeb
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jan 27 14:11:16 2011 -0800

    revamp packaging makefile, update URLs

    More common code that's still GNU make is better for my
    sanity.  Also, bogomips.org went on a URL diet recently.

commit f6c79438ed195bb706903d104cce850bfbfbac41
Author: Eric Wong <normalperson@yhbt.net>
Date:   Tue Jan 18 15:52:25 2011 -0800

    add tests for empty writes, too

    There could be some platforms that dislike it...

commit 9c81cc3fd8d2b3dce68d69d8e0c56a4c5d89ebf0
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Jan 13 14:46:02 2011 -0800

    Makefile: remove non-existent target reference

    Oops

commit fb8104e1f2a5d1cdcb99a19b6a4bdabf0b1c2643
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Dec 25 18:06:47 2010 -0800

    kgio 2.1.1 - one small Rubinius fix

    We now avoid errno side-effects in kgio_wait_*able methods.
    This affects Rubinius, but may affect other Ruby platforms
    (particularly those that use stdio) as well.

commit 6ab4331f8137e949ab57f014f96ff3918a315044
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sat Dec 25 18:02:16 2010 -0800

    avoid errno side-effects in kgio_wait_*able

    Retrieving the file descriptor may have side-effects on
    certain Ruby implementations (e.g. Rubinius), so ensure
    our errno is preserved before calling rb_io_wait_*able().

commit 3a0323b642ee054319a5e64ffe28e089bbd013e4
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 01:08:58 2010 +0000

    gemspec: point folks to the public mailing list

    It's more useful that way.

commit 9d5c9e6c9975cb5c10e7384aed9ed22ae0ee57c8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 01:02:00 2010 +0000

    kgio 2.1.0 - accept improvements and fixes

    kgio_accept and kgio_tryaccept now take an optional argument
    to override the default Kgio::Socket class that is returned.

    These methods also fall back to using regular accept() if
    kgio was built on a system with accept4() and later run on
    a system without accept4().

commit dcd5eff7dd5d5861b67667f48424979be9bcabc8
Author: Eric Wong <normalperson@yhbt.net>
Date:   Sun Dec 26 00:21:25 2010 +0000

    quiet down some harmless compiler warnings

    Less noise means we'll notice real bugs sooner.

commit 5280f35f131d88f90afffff0e10f7900530728aa
Author: Eric Wong <e@yhbt.net>
Date:   Sat Dec 25 23:00:05 2010 +0000

    accept4: fall back to regular accept() on ENOSYS

    kgio may occasionally be built on a system with accept4()
    and then deployed on one without it.   Handle this case
    gracefully since it unfortunately happens on production systems.

commit b859c4a12905cbd71d19cde2aaa9f88ec0374cc5
Author: Eric Wong <e@yhbt.net>
Date:   Sat Dec 25 22:44:53 2010 +0000

    accept methods may take an optional argument

    This is preferred as we no longer have to rely on a global
    constant.

commit ef069ece624906b3946248421620d8458bcef605
Author: Eric Wong <e@yhbt.net>
Date:   Fri Dec 24 09:21:19 2010 +0000

    Rakefile: fix RAA license

    Oops, we were never Ruby licensed.

commit 472240687caf3f113a3ff408729f8205c475d7d5
Author: Eric Wong <e@yhbt.net>
Date:   Fri Dec 24 09:20:40 2010 +0000

    doc: use wrongdoc for documentation

    wrongdoc factors out a bunch of common code from this
    project into its own and removes JavaScript from RDoc
    to boot.

commit 64bbc95d2192fb621b763c1c4d1ae32940c1a5ac
Author: Eric Wong <normalperson@yhbt.net>
Date:   Wed Dec 22 12:12:18 2010 -0800

    fix errors in RDoc

    Noticed-by: Iñaki Baz Castillo

commit f093312ad1ed336363f352991b6b99d96f7aed1d
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 17:16:53 2010 -0800

    kgio 2.0.0 - major internal API changes

    (no code changes from 2.0.0pre1)

    This release should make Kgio easier and more consistent
    to use across a variety of libraries/applications.

    The global Kgio.wait_*able(=) accessor methods are gone in favor
    of having default kgio_wait_readable and kgio_wait_writable
    methods added to all Kgio-using classes.  Sub-classes may (and
    are encouraged to) redefine these if needed.

    Eric Wong (7):
        expand Kgio::*#kgio_read! documentation
        prefer symbolic names for waiting read/writability
        EOFError message matches Ruby's
        README: Gemcutter => RubyGems.org
        update documentation with mailing list info
        add default kgio_wait_*able methods
        switch entirely to kgio_wait_*able methods

commit edfa7e60de5556b6abc9febe6a21e12dadbafd0b
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 15:42:27 2010 -0800

    Rakefile: list prerelease tags as well

    Since we do prerelease nowadays before real ones.

commit d78a2075bdb0a30bf0064d2857011c330cc0d09e
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 15:38:12 2010 -0800

    move website to bogomips.org

    This project is useful enough for others and to stand alone
    without needing to be associated with Unicorn.

commit 28070c522aff233eadb7e167f8d4e8122cd0bb47
Author: Eric Wong <normalperson@yhbt.net>
Date:   Thu Nov 18 15:15:40 2010 -0800

    kgio 2.0.0pre1 - major internal API changes

    This release should make Kgio easier and more consistent
    to use across a variety of libraries/applications.

    The global Kgio.wait_*able(=) accessor methods are gone in favor
    of having default kgio_wait_readable and kgio_wait_writable
    methods added to all Kgio-using classes.  Sub-classes may (and
    are encouraged to) redefine these if needed.

    Eric Wong (7):
          expand Kgio::*#kgio_read! documentation
          prefer symbolic names for waiting read/writability
          EOFError message matches Ruby's
          README: Gemcutter => RubyGems.org
          update documentation with mailing list info
          add default kgio_wait_*able methods
          switch entirely to kgio_wait_*able methods

commit c69955e64648ab6a3471a54f7885a320428682f9
Author: Eric Wong <e@yhbt.net>
Date:   Thu Nov 18 14:37:05 2010 -0800

    switch entirely to kgio_wait_*able methods

    This removes the global Kgio.wait_*able accesors and requires
    each class to define (or fall back to) the Kgio::DefaultWaiters
    methods.

commit f1b497e601ed2acb54f75dc989d0a5ec7afebca0
Author: Eric Wong <e@yhbt.net>
Date:   Thu Nov 18 13:38:32 2010 -0800

    add default kgio_wait_*able methods

    It makes it easier for people to use certain overrides without
    killing other methods.  This is the first step in fixing
    problems people were having with dalli 0.11.1+ while running
    Unicorn.

commit 827ad6b4fba768a5cac8fb4e83fbbf61cf7a3194
Author: Eric Wong <e@yhbt.net>
Date:   Mon Nov 15 10:33:55 2010 -0800

    update documentation with mailing list info

    We're a real project, apparently, so it can have its
    own mailing list.

commit fd88eae588c1e715dcaf3a1a000391cc13481e02
Author: Eric Wong <e@yhbt.net>
Date:   Mon Nov 15 10:22:49 2010 -0800

    README: Gemcutter => RubyGems.org

    That's the new name for it and it's official

commit 8615a3f9554df0fd7f7f088cd49cf1e3be49de9f
Author: Eric Wong <e@yhbt.net>
Date:   Fri Nov 12 20:25:50 2010 -0800

    EOFError message matches Ruby's

    This makes messages appear less different than Ruby
    when using kgio_read!

    Requested-by: Mike Perham

commit 2772ed8bfe108b66b7493bc5cb0c40ddeb1ca57d
Author: Eric Wong <e@yhbt.net>
Date:   Fri Nov 5 09:01:08 2010 +0800

    prefer symbolic names for waiting read/writability

    There's no point in using constants that point to symbols
    instead of just the symbols themselves.

commit bf3b507791403811bece9dff915ca10757bca519
Author: Eric Wong <e@yhbt.net>
Date:   Thu Oct 28 21:02:31 2010 +0000

    expand Kgio::*#kgio_read! documentation

    If the author can forget why it was written, so can
    the rest of the world.

commit f4d08a07a02393cca5ddd1277acc4f95c83307ff
Author: Eric Wong <e@yhbt.net>
Date:   Fri Oct 8 14:55:16 2010 -0700

    kgio 1.3.1 - fix zero-length reads

    kgio_read and kgio_tryread will now return an empty string when
    a length of zero is specified instead of nil (which would signal
    an EOF).  This emulates the behavior of IO#read, IO#readpartial,
    IO#sysread, IO#read_nonblock in core Ruby for consistency.

commit d225ede82d820d045bd7cfb826f444cf6601577c
Author: Eric Wong <normalperson@yhbt.net>
Date:   Fri Oct 8 02:53:38 2010 -0700

    return empty string on length=0

    This matches behavior of all the core Ruby methods.

commit e4599227f0da0f652cbcb52838e631d7384dcd0d
Author: Eric Wong <e@yhbt.net>
Date:   Thu Oct 7 20:02:40 2010 -0700

    kgio 1.3.0 - bug and usability fixes

    * make Kgio::WaitWritable and Kgio::WaitReadable symbols
    * trywrite: fix stupid off-by-one error causing corrupt writes
      on retries

commit f5fc35221d37141b0f72278c7b969211410e94c0
Author: Eric Wong <e@yhbt.net>
Date:   Thu Oct 7 20:00:09 2010 -0700

    tests: don't trust what I think I know about Ruby

    case/when and === didn't actually work as I expected
    them to.

commit 2152188f41bf2a5067e84a4404b48b2282a9dd55
Author: Eric Wong <e@yhbt.net>
Date:   Thu Oct 7 19:56:57 2010 -0700

    trywrite: fix stupid off-by-one error causing corrupt writes

    Oops!

commit c448ad898ecb7f354a32a320294da4727fc9af52
Author: Eric Wong <e@yhbt.net>
Date:   Thu Oct 7 19:55:49 2010 -0700

    make WaitWritable and WaitReadable symbols

    This makes them easier to compare with === when used
    in case/when statements in Ruby

commit 49f0b98c69f1f0bf637953d0bfc96b764f00ab9b
Author: Eric Wong <e@yhbt.net>
Date:   Thu Oct 7 07:15:49 2010 +0000

    kgio 1.2.1 - doc and *BSD workarounds

    This fixes our accept4() wrapper which did not work as expected
    on some *BSD-based systems due to fcntl(fd, F_GETFL) returning
    false information.  Linux 2.6+ users are unnaffected, including
    those without accept4().

    Also some RDoc fixes.

commit 03344bb763f5269afe7fafd56a47270719c7ef9e
Author: Eric Wong <e@yhbt.net>
Date:   Thu Oct 7 07:14:07 2010 +0000

    doc: fix RDoc generation

    Oops, completely broken by the splitting of the code.

commit 637317eb479525dca543eda7a8977410bc43b832
Author: Eric Wong <e+07380@yhbt.net>
Date:   Wed Oct 6 14:08:35 2010 -0700

    accept4: workaround (P)OS X bug w/O_NONBLOCK

    Apparently fcntl(fd, F_GETFL) can return falsely return the
    O_NONBLOCK flag without actually having it set in the kernel.
    This is totally broken on the part of the OS.

commit ca76c75f8a24d0cd6828fe16ca3790a277b35f8d
Author: Eric Wong <e+07380@yhbt.net>
Date:   Wed Oct 6 14:06:27 2010 -0700

    build: pick on on modified extension files

    We build more than one file nowadays.

commit 65f96b7750616bc210397c16eea40961e578a788
Author: Eric Wong <e@yhbt.net>
Date:   Wed Oct 6 11:51:04 2010 -0700

    doc: fix typo in Kgio.accept_cloexec= doc

    oops...

commit 414dd17f1009c571e2d7657721271756e3d4dd8e
Author: Eric Wong <e@yhbt.net>
Date:   Tue Oct 5 16:09:40 2010 -0700

    kgio 1.2.0 - cleanups and minor improvements

    The C extension is now split into several files for
    ease-of-maintenance.

    Slightly more common, client-triggerable exceptions (EOFError,
    Errno::EPIPE, Errno::ECONNRESET) are now less expensive as they
    are generated without backtraces.

commit e085bb9600b190692beb5efc85656ebf127ae08c
Author: Eric Wong <e@yhbt.net>
Date:   Tue Oct 5 15:45:16 2010 -0700

    generate empty backtraces for EPIPE and ECONNRESET

    Malicious clients may disconnect during big writes to cause
    EPIPE and ECONNRESET exceptions.  Generating backtraces can be
    expensive with Ruby, so mitigate the DoS vector by lowering the
    cost of generating an exception.

commit b168cc894037620cab82fa82f3ab37a3aab81570
Author: Eric Wong <e@yhbt.net>
Date:   Tue Oct 5 15:26:57 2010 -0700

    add kgio_read! methods which may raise EOFError

    Except EOFError is gently raised to not include a huge
    backtrace.  Large backtraces can be a performance problem on
    busy servers that malicious clients may exploit to deny service.

commit 870ada92db7071c7982913e508ac35b97d6e8761
Author: Eric Wong <e@yhbt.net>
Date:   Tue Oct 5 11:45:02 2010 -0700

    GNUmakefile: use portable tar invocation

    We've been spoiled by GNU tar.

commit 2a6115a89d5c95428bd6c3e0bc10e5a3a4c3c3be
Author: Eric Wong <e@yhbt.net>
Date:   Wed Sep 29 18:25:58 2010 -0700

    refactor and split into separate files

    Making the code easier to read and navigate.  This also
    frees us from having to use the stupid A4_ prefix for
    accept4(2) flags since it conflicts with the socket(2)
    ones.

commit 8fe89997453d6c530c3f5e08bc9c1da40a621248
Author: Eric Wong <e@yhbt.net>
Date:   Wed Sep 29 17:13:21 2010 -0700

    Make kgio_trywrite more aggressive with retrying

    Partial writes can be retried until completely denied with
    EAGAIN.  Often times, it is beneficial to retry immediately
    after a partial write because the kernel may allocate more
    buffers or the reader can drain the buffers.

    This helps the caller avoid crossing the Ruby <-> C boundary
    more than necessary.

commit 39c851e595970a2349a8a39878afd94a3324e102
Author: Eric Wong <e@yhbt.net>
Date:   Tue Sep 28 18:16:53 2010 -0700

    kgio 1.1.0 - flexible accept methods

    * an alternate class now be returned by accept/tryaccept
      by setting "Kgio.accept_class ="

commit 911f6ab306aff1e24c9c570eeae33923fa1b99d9
Author: Eric Wong <e@yhbt.net>
Date:   Tue Sep 28 18:04:51 2010 -0700

    alternate classes may be returned by accept/tryaccept

    These can be useful for avoiding wrapper objects and
    also allows users to more easily try different things
    without stepping on others' toe^H^H^Hclasses.

commit 526b4bd48a20a34ef5959fdc4aa580d5f9199652
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 19:59:34 2010 -0700

    kgio 1.0.1 - compatibility fixes

    * add compatibility for ancient Rubies (1.8.6)
    * linux: fix accept4() support for newer Linux

commit 20cbc0355104470fb433dd13e87a5d5c7e888ab1
Author: Eric Wong <e@yhbt.net>
Date:   Tue Sep 28 02:56:41 2010 +0000

    linux: fix accept4() support for newer Linux

    Oops :x  Tested on Debian sid.

commit 24f1d168eb0937f0586c45b266bcd208431f0107
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 18:06:34 2010 -0700

    add compatibility for ancient Rubies

    This is tested on Ruby 1.8.6-p114, but may work
    for 1.8.5, too.  Ugh, people ought to upgrade.

commit e4d204c86e9420023ba3e4d8dbeb6b3fea8d6cf7
Author: Eric Wong <e@yhbt.net>
Date:   Tue Sep 28 00:27:44 2010 +0000

    kgio 1.0.0 - initial release

    Documentation and release infrastructure updates
    and such...

commit 8984b9556a3493570fbb4f747fce712d58f2cdd8
Author: Eric Wong <e@yhbt.net>
Date:   Tue Sep 28 00:07:43 2010 +0000

    doc: TODO update

commit 2c64a1fc07d3b9a80d112e3b0e2baa7ec29c2f47
Author: Eric Wong <e@yhbt.net>
Date:   Tue Sep 28 00:03:39 2010 +0000

    read/write: account for buffer changes during wait

    It's possible for applications to modify the buffer during
    reads and writes, so make a best effort to account for those.

commit f2ea9918655e8ee0576bee2950d16485031fc361
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 23:59:59 2010 +0000

    tests: fix broken monster trywrite test

    Oops, use random data so it's easier to detect this.

commit 7abc0eb3dd804c2e65660b7dd9c828df0e03b80a
Author: Eric Wong <e+absinthe@yhbt.net>
Date:   Mon Sep 27 15:09:44 2010 -0700

    test_tcp*read_write: use blocking kgio_accept in setup

    Some OSes (FreeBSD 7.0) do not seem to setup
     connections as quickly.

commit 95d2eae6a4da34c504427af6ae0ab4c8c70c0ce5
Author: Eric Wong <e+absinthe@yhbt.net>
Date:   Mon Sep 27 15:09:43 2010 -0700

    set blocking flag before blocking IO#read

    Some older Rubies may not behave correctly otherwise

commit 0806cac89f9d0e169b6c1e4da68c1ad66daa23ae
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 23:16:53 2010 +0000

    tess: ensure buffer is cleared on failures

    No need to leak data.

commit 50b86bf23063f3e6c3777b39c9464f73ccfd6ef5
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 22:55:52 2010 +0000

    more documentation

    Somebody's gotta do it...

commit 5123d66fe0b2dad67539a20fe5b91f5b9afd814a
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 16:56:13 2010 +0000

    avoid initiating syscalls before rb_io_wait_*

    Some Ruby implementations (Rubinius) may call lseek
    and clobber the intended errno when looking up the
    open file, causing rb_io_wait_* functions to fail.

commit 6c818b0b6f76ef733679bcea1024142b4ef3ce00
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 01:13:30 2010 +0000

    add kgio_tryaccept, kgio_accept _really_ blocks

    We'll stick with the "try" prefix if we're going to be
    non-blocking.  kgio_accept will favor a blocking accept() call
    where it's possible to release the GVL, allowing it to avoid
    thundering herd problems.  Otherwise it'll use thread-safe
    blocking under Ruby 1.8.

commit f81cb3c05a0eb46ec61ceb295b51ead16e6a0da4
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 00:57:14 2010 +0000

    use SOCK_NONBLOCK for socket(2) if possible

    This saves us a relatively expensive fcntl() system call.

commit 87cf3ce6185b9138032a5af53cecae98f8c93564
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 00:24:50 2010 +0000

    connect: no do not leak descriptors on failure

    We cannot raise exceptions and expect GC to clean up
    after us until we've created an actual IO object.

commit 6fbde1518578dd1b828efcecaf2caf893bddc110
Author: Eric Wong <e@yhbt.net>
Date:   Mon Sep 27 00:11:43 2010 +0000

    "start" singleton methods for non-blocking connect

    These initiate (but do not wait for) non-blocking connects.

commit fdfecc6d815bab8dfc1d8ad6758a66d44ab51e31
Author: Eric Wong <e@yhbt.net>
Date:   Sun Sep 26 07:51:12 2010 +0000

    introduce kgio_try* methods

    Avoid altering behavior based on globals that
    Kgio.wait_{read,writ}able stored in, since that's too confusing.
    The non-try variants are closer to the normal IO read/write
    methods, except they can be more easily plugged into alternate
    reactors and event frameworks.

commit d8ee79e1e5c6e6908009213324db25cf41c583ce
Author: Eric Wong <e@yhbt.net>
Date:   Sat Sep 25 17:55:07 2010 +0000

    kgio_read returns nil on EOF

    Just like IO#read

commit af03e4471de3d3b91eec16e26e93a84d4a717116
Author: Eric Wong <e@yhbt.net>
Date:   Sat Sep 25 17:47:13 2010 +0000

    split out reusable bits into separate headers

    No point in cluttering up the meat of our code.

commit db53263856d864ba6273e6cac73011f699509d71
Author: Eric Wong <e+absinthe@yhbt.net>
Date:   Sat Sep 25 01:36:13 2010 -0700

    only use MSG_DONTWAIT under Linux

    MSG_DONTWAIT is less consistently implemented/supported on other
    platforms on stream sockets, so fallback to fcntl() + read()/write()
    for stream sockets.  This also fixes our previously broken support
    of non-MSG_DONTWAIT systems.

commit a82dc40c2a509c4ab692da34b572693f243fbfae
Author: Eric Wong <e+absinthe@yhbt.net>
Date:   Sat Sep 25 01:36:12 2010 -0700

    write/send may fail with ECONNRESET

    Tested on FreeBSD 7.0

commit 0c60192621303f5e4ebd46d43a058de48126bc8a
Author: Eric Wong <e+absinthe@yhbt.net>
Date:   Sat Sep 25 01:36:11 2010 -0700

    fix missing netinet/in.h include

    This is needed for FreeBSD 7.0, at least.

commit 0beb82437f4ab0b8422e225080b234361092315e
Author: Eric Wong <e@yhbt.net>
Date:   Sat Sep 25 08:15:13 2010 +0000

    beef up the test suite

    We need to test server <-> client interaction
    more thoroughly since some systems don't implement
    everything right.

commit 460e6b025896dee64b39d194d4c1a536129654de
Author: Eric Wong <e@yhbt.net>
Date:   Thu Sep 23 22:56:44 2010 +0000

    initial commit + release

    everything shou^Wmight be working...

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