[#35599] Proc#== behaviour on 1.8.7 and 1.9.2 — Adam Prescott <adam@...>
I've encountered a problem when using Proc#== (with both lambdas and
[#35613] [Ruby 1.9 - Feature #4539][Assigned] Array#zip_with — Yui NARUSE <redmine@...>
> http://redmine.ruby-lang.org/issues/4539
Hi,
[#35618] Redmine issues — Benoit Daloze <eregontp@...>
Hello,
[#35621] [Ruby 1.9 - Bug #4555][Open] [PATCH] ext/socket/init.c: rsock_connect retries on interrupt — Eric Wong <normalperson@...>
[#35629] [Ruby 1.9 - Bug #4473] Calling return within begin still executes else — Mayank Kohaley <redmine@...>
[#35631] [Ruby 1.9 - Bug #4558][Open] TestSocket#test_closed_read fails after r31230 — Tomoyuki Chikanaga <redmine@...>
> ----------------------------------------
KOSAKI Motohiro <kosaki.motohiro@gmail.com> wrote:
Tomoyuki Chikanaga <redmine@ruby-lang.org> wrote:
> Issue #4558 has been updated by Eric Wong.
KOSAKI Motohiro <kosaki.motohiro@gmail.com> wrote:
[#35632] [Ruby 1.9 - Bug #4559][Open] Proc#== does not match the documented behaviour — Adam Prescott <redmine@...>
(2012/11/28 16:10), matz (Yukihiro Matsumoto) wrote:
I believe this will be a spec change, albeit a small one. Can we
[#35636] [Ruby 1.9 - Feature #4560][Open] [PATCH] lib/net/protocol.rb: avoid exceptions in rbuf_fill — Eric Wong <redmine@...>
[#35637] [Ruby 1.9 - Bug #4561][Open] 1.9.2 requires parentheses around argument of method call in an array, where 1.8.7 did not — Dave Schweisguth <redmine@...>
[#35644] [Ruby 1.8 - Bug #4563][Open] Dir#tell broken — Daniel Berger <redmine@...>
[#35648] mvm branch status? — Eric Wong <normalperson@...>
Hello, I noticed the "mvm" branch in SVN hasn't been updated in over a year.
Hi Eric.
Has there been any thought on solving the C extension problem in MVM? In the present state, I've stopped working on it in Rubinius because there is no workable solution if there are C extensions in the mix.
Evan Phoenix <evan@fallingsnow.net> wrote:
On Thu, Apr 7, 2011 at 6:18 PM, Eric Wong <normalperson@yhbt.net> wrote:
[#35666] caching of the ancestor chain — Xavier Noria <fxn@...>
Why does Ruby cache the ancestors chain? I mean, not why the implementation implies that, but why it works that way conceptually.
Ah, in case it is not clear, where I find the metaphor broken is in that you can add methods to a mixin and have them available in classes that already included it, but if you include a new ancestor, then method dispatch in classes that already included the module aren't aware of the new chain.
Hi,
On Fri, Apr 8, 2011 at 7:56 PM, Yukihiro Matsumoto <matz@ruby-lang.org> wrote:
[#35678] [Ruby 1.9 - Bug #4564][Open] mingw-w64, truncate, ftruncate and ftello -- properly evalute it's existence — Luis Lavena <redmine@...>
[#35699] [Ruby 1.9 - Feature #4568][Open] [PATCH] file.c (rb_group_member): kill 256K of stack usage — redmine@...
[#35707] [Ruby 1.9 - Feature #4569][Open] Replace IPAddr with IPAddress — redmine@...
[#35713] [Ruby 1.9 - Bug #4571][Open] YAML.load given an ISO8601 timestamp creates an incorrect value for usec — redmine@...
[#35734] [Ruby 1.9 - Feature #4574][Open] Numeric#within — redmine@...
[#35753] [Ruby 1.9 - Bug #4576][Open] Range#step miss the last value, if end-exclusive and has float number — redmine@...
Hi,
2011/9/16 Kenta Murata <muraken@gmail.com>:
2011/9/16 Marc-Andre Lafortune <ruby-core@marc-andre.ca>:
On 16 September 2011 15:49, Tanaka Akira <akr@fsij.org> wrote:
Can somebody please reopen this issue? Since the test suite fix is
2011/9/17 Marc-Andre Lafortune <ruby-core@marc-andre.ca>:
2011/9/17 Tanaka Akira <akr@fsij.org>:
(2011/09/17 9:07), Tanaka Akira wrote:
I have not been watching ruby-core, but let me give a comment for this issue.
2011/9/17 Masahiro TANAKA <masa16.tanaka@gmail.com>:
2011/9/20 Tanaka Akira <akr@fsij.org>:
I haven't explained the reason of the error estimation in
On 21 September 2011 14:25, masa <masa16.tanaka@gmail.com> wrote:
[#35754] [Ruby 1.9 - Bug #4577][Open] (int...float).max should not raise an error — redmine@...
[#35759] [Ruby 1.8 - Bug #4578][Open] Fixnum.freeze not frozen? — redmine@...
[#35765] [Ruby 1.9 - Bug #4579][Open] SecureRandom + OpenSSL may repeat with fork — redmine@...
[#35777] hashes are not consistent across ruby processes? — Roger Pack <rogerdpack2@...>
Hello all.
[#35813] [Ruby 1.9 - Bug #4320] Bus Error in digest/sha2 on sparc — redmine@...
[#35814] [Ruby 1.9 - Bug #4320] Bus Error in digest/sha2 on sparc — redmine@...
[#35825] [Ruby 1.8 - Bug #4587][Open] RMATCH_REGS definition is wrong — redmine@...
[#35828] [Ruby 1.9 - Feature #4589][Open] add Queue#each() method and include Enumerable — redmine@...
[#35830] [Ruby 1.9 - Feature #3436] Spawn the timer thread lazily — redmine@...
[#35850] [Ruby 1.9 - Feature #4189] FileUtils#ln_r — Sakuro OZAWA <redmine@...>
[#35866] [Ruby 1.9 - Bug #4603][Open] lib/csv.rb: when the :encoding parameter is not provided, the encoding of CSV data is treated as ASCII-8BIT — yu nobuoka <nobuoka@...>
On Sun, Apr 24, 2011 at 1:33 AM, yu nobuoka <nobuoka@r-definition.com>wrote:
2011/4/25 James Gray <james@graysoftinc.com>:
On Sun, Apr 24, 2011 at 11:29 PM, NARUSE, Yui <naruse@airemix.jp> wrote:
[#35879] [Ruby 1.9 - Bug #4610][Open] Proc#curry behavior is inconsistent with lambdas containing default argument values — Joshua Ballanco <jballanc@...>
[#35883] [Ruby 1.9 - Bug #4611][Open] [BUG] Segementation fault reported — Deryl Doucette <me@...>
[#35895] [Ruby 1.9 - Feature #4614][Open] [RFC/PATCH] thread_pthread.c: lower RUBY_STACK_MIN_LIMIT to 64K — Eric Wong <normalperson@...>
[#35923] [Ruby 1.9 - Feature #4621][Open] NilClass#to_hash — Tsuyoshi Sawada <sawadatsuyoshi@...>
[#35933] [Ruby 1.9 - Bug #4623][Open] Consistent crash related to action_mailer — Alex Neth <alex@...>
[#35942] change in timeout error — Roger Pack <rogerdpack2@...>
Hello. Sorry if this is a repeat...
[#35943] [Ruby 1.9 - Feature #3905] rb_clear_cache_by_class() called often during GC for non-blocking I/O — Motohiro KOSAKI <kosaki.motohiro@...>
[ruby-core:35596] [Ruby 1.9 - Feature #4538] [PATCH (cleanup)] avoid unnecessary select() calls before doing I/O
Issue #4538 has been updated by Charles Nutter.
Understood. I read through a bit more code and saw that Ruby uses pthread signalling and RUBY_VM_CHECK_INTS after blocking regions to interrupt blocking operations.
I wonder, though, if depending on this behavior is leading Ruby more and more down the GVL path. The designers of the JVM's core IO libraries, for example, were unable to reconcile concurrent native threads with interruptible IO, due to the impossibility of knowing what state all IO-related data structures are in when the thread is interrupted. As a result, IO channels performing blocking operations are explicitly closed when the thread they block is interrupted.
In JRuby, we simulate interruptible IO by using select as much as possible, and blocking operations against unselectable IO channels are not interruptible. Some of the overhead of select is mitigated by JVM implementers usually using the fastest-possible mechanism to implement it (kqueue, epoll).
It seems that your change (and others like it) makes Ruby even more dependent on kernel-level blocking IO operations always being safely interruptible, and depending on those interruptions to only occur at the exact boundaries defined by the GVL. A future concurrent-threaded Ruby (or other impls that may become concurrent-threaded) may want to consider this, no? And are there any cross-platform concerns from eliminating select in these cases?
I also wonder if there's a race condition here; is it not possible that the interrupt of a thread would fire immediately after the GVL has been released but before the blocking IO operation has fired? Perhaps I'm birdwalking too deep into the vagaries of MRI's IO logic.
----------------------------------------
Feature #4538: [PATCH (cleanup)] avoid unnecessary select() calls before doing I/O
http://redmine.ruby-lang.org/issues/4538
Author: Eric Wong
Status: Open
Priority: Low
Assignee:
Category: core
Target version: 1.9.x
Please look at http://redmine.ruby-lang.org/issues/4535 before
this one. That one actually fixes a bug I noticed while working
on this patch.
Ruby 1.9 no longer depends on multiplexed non-blocking I/O
to do its threading and defaults to blocking file descriptors.
As a result, there is no need to check the fd for read/writability when
there is an error check for rb_io_wait_(read|writ)able after the
blocking function.
I also believe the code in io_binwrite() to:
avoid context switch between "a" and "\n" in STDERR.puts "a".
[ruby-dev:25080]
...has always been broken under 1.9 with native threads.
Nothing new is broken with test-all and test-rubyspec
--
http://redmine.ruby-lang.org