[#53893] [ruby-trunk - Bug #8204][Open] ObjectSpace.each_object(Bignum) can generate Bignums that are to small to be Bignums — "Hanmac (Hans Mackowiak)" <hanmac@...>
5 messages
2013/04/02
[#53914] [ruby-trunk - Feature #8206][Open] Should Ruby core implement String#blank? — "sam.saffron (Sam Saffron)" <sam.saffron@...>
10 messages
2013/04/03
[#53922] [ruby-trunk - Bug #8208][Open] Raise cached exceptions for nonblocking IO to avoid allocation/stack-copying costs — "headius (Charles Nutter)" <headius@...>
7 messages
2013/04/03
[#54349] [ruby-trunk - Bug #8208] Raise cached exceptions for nonblocking IO to avoid allocation/stack-copying costs
— "headius (Charles Nutter)" <headius@...>
2013/04/16
[#54374] Re: [ruby-trunk - Bug #8208] Raise cached exceptions for nonblocking IO to avoid allocation/stack-copying costs
— Eric Wong <normalperson@...>
2013/04/17
"headius (Charles Nutter)" <[email protected]> wrote:
[#53950] [ruby-trunk - Bug #8211][Open] Performance regression of method calls — "dunric (David Unric)" <dunric29a@...>
9 messages
2013/04/03
[#53974] [ruby-trunk - Feature #8215][Open] Support accessing Fiber-locals and backtraces for a Fiber — "halorgium (Tim Carey-Smith)" <ruby-lang-bugs@...>
14 messages
2013/04/03
[#54023] [ruby-trunk - Feature #8223][Open] Make Matrix more omnivorous. — "boris_stitnicky (Boris Stitnicky)" <boris@...>
9 messages
2013/04/05
[#54031] Question about r39944 — Aaron Patterson <tenderlove@...>
Hi,
9 messages
2013/04/05
[#54032] Re: Question about r39944
— "NARUSE, Yui" <naruse@...>
2013/04/05
Even if test directory should be on the load path on test-all, you should
[#54095] [ruby-trunk - Feature #8237][Open] Logical method chaining via inferred receiver — "wardrop (Tom Wardrop)" <tom@...>
34 messages
2013/04/08
[#54097] [ruby-trunk - Feature #8237] Logical method chaining via inferred receiver
— "rosenfeld (Rodrigo Rosenfeld Rosas)" <rr.rosas@...>
2013/04/08
[#54175] [ruby-trunk - Bug #8254][Open] Ruby segfaults on second SystemStackError from parser — "charliesome (Charlie Somerville)" <charlie@...>
3 messages
2013/04/11
[#54185] [CommonRuby - Feature #8257][Open] Exception#cause to carry originating exception along with new one — "headius (Charles Nutter)" <headius@...>
43 messages
2013/04/11
[#54629] Re: [CommonRuby - Feature #8257][Open] Exception#cause to carry originating exception along with new one
— SASADA Koichi <ko1@...>
2013/04/27
(2013/04/12 1:40), headius (Charles Nutter) wrote:
[#54637] Re: [CommonRuby - Feature #8257][Open] Exception#cause to carry originating exception along with new one
— Charles Oliver Nutter <headius@...>
2013/04/27
On Sat, Apr 27, 2013 at 5:19 PM, SASADA Koichi <[email protected]> wrote:
[#54196] Encouraging use of CommonRuby — Charles Oliver Nutter <headius@...>
I think we need to do more to encourage the use of the CommonRuby
20 messages
2013/04/11
[#54200] Re: Encouraging use of CommonRuby
— Marc-Andre Lafortune <ruby-core-mailing-list@...>
2013/04/11
Hi,
[#54211] Re: Encouraging use of CommonRuby
— "NARUSE, Yui" <naruse@...>
2013/04/12
As far as I understand, what is CommonRuby and the process over CommonRuby
[#54215] Re: Encouraging use of CommonRuby
— Charles Oliver Nutter <headius@...>
2013/04/12
On Thu, Apr 11, 2013 at 11:25 PM, NARUSE, Yui <[email protected]> wrote:
[#54220] Re: Encouraging use of CommonRuby
— "NARUSE, Yui" <naruse@...>
2013/04/12
(2013/04/12 16:40), Charles Oliver Nutter wrote:
[#54232] Re: Encouraging use of CommonRuby
— Charles Oliver Nutter <headius@...>
2013/04/12
On Fri, Apr 12, 2013 at 8:08 AM, NARUSE, Yui <[email protected]> wrote:
[#54201] Has ObjectSpace changed recently? — Dave Thomas <dave@...>
I just noticed that in 2.0, I see this:
5 messages
2013/04/11
[#54207] [CommonRuby - Feature #8258][Open] Dir#escape_glob — "steveklabnik (Steve Klabnik)" <steve@...>
15 messages
2013/04/12
[#54227] [CommonRuby - Feature #8258] Dir#escape_glob
— "rkh (Konstantin Haase)" <me@...>
2013/04/12
[#54218] [CommonRuby - Feature #8259][Open] Atomic attributes accessors — "funny_falcon (Yura Sokolov)" <funny.falcon@...>
43 messages
2013/04/12
[#63015] [CommonRuby - Feature #8259] Atomic attributes accessors
— headius@...
2014/06/09
Issue #8259 has been updated by Charles Nutter.
[#63016] Re: [CommonRuby - Feature #8259] Atomic attributes accessors
— Eric Wong <normalperson@...>
2014/06/09
I'm not sure if setting the attribute on the ivar is a good way to go.
[#54333] Requesting Commit Access — Aman Gupta <[email protected]>
Hello ruby-core,
16 messages
2013/04/16
[#54368] Re: Requesting Commit Access
— Yukihiro Matsumoto <matz@...>
2013/04/16
Hi,
[#54377] Re: Requesting Commit Access
— Charles Nutter <headius@...>
2013/04/17
On Apr 16, 2013, at 4:34 AM, Aman Gupta <[email protected]> wrote:
[#54415] [ruby-trunk - Bug #8286][Open] Can't decode non-MIME Base64 — "adacosta (Alan Da Costa)" <alandacosta@...>
10 messages
2013/04/17
[#54459] [CommonRuby - Feature #8291][Open] Allow retrieving the root Fiber of a Thread — "halorgium (Tim Carey-Smith)" <ruby-lang@...>
5 messages
2013/04/19
[#54473] [Backport 200 - Backport #8299][Open] Minor error in float parsing — "bobjalex (Bob Alexander)" <bobjalex@...>
27 messages
2013/04/19
[#54496] [ruby-trunk - Bug #8299] Minor error in float parsing
— "naruse (Yui NARUSE)" <naruse@...>
2013/04/22
[#54549] [ruby-trunk - Bug #8299] Minor error in float parsing
— "phasis68 (Heesob Park)" <phasis@...>
2013/04/24
[#54509] [ruby-trunk - Bug #8310][Open] resque-web crashes with segfault on Ruby 2.0.0-p0 only, Resque 1.24.1, Redis 2.6.12 — "vaharoni (Amit Aharoni)" <amit.sites@...>
5 messages
2013/04/22
[#54559] [ruby-trunk - Feature #8321][Open] Ripper: I would like coordinates for keywords — "ericp (Eric Promislow)" <eric.promislow@...>
7 messages
2013/04/24
[#54606] Plan to the first 2.0.0 patchlevel release. — Tomoyuki Chikanaga <nagachika00@...>
Hello, Rubyists.
8 messages
2013/04/26
[#54743] Re: Plan to the first 2.0.0 patchlevel release.
— Marc-Andre Lafortune <ruby-core-mailing-list@...>
2013/05/02
Hi,
[#54815] Re: Plan to the first 2.0.0 patchlevel release.
— Aman Gupta <[email protected]>
2013/05/06
Could you please backport the following:
[#54621] [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI — "ko1 (Koichi Sasada)" <redmine@...>
43 messages
2013/04/27
[#54706] [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— "sam.saffron (Sam Saffron)" <sam.saffron@...>
2013/04/30
[#54643] [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— "authorNari (Narihiro Nakamura)" <authorNari@...>
2013/04/28
[#54649] Re: [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— SASADA Koichi <ko1@...>
2013/04/28
(2013/04/28 9:23), authorNari (Narihiro Nakamura) wrote:
[#54770] Re: [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— Narihiro Nakamura <authornari@...>
2013/05/04
2013/4/28 SASADA Koichi <[email protected]>:
[#54772] Re: [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— SASADA Koichi <ko1@...>
2013/05/04
(2013/05/04 12:08), Narihiro Nakamura wrote:
[#54813] Re: [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— Tanaka Akira <akr@...>
2013/05/06
2013/5/4 SASADA Koichi <[email protected]>:
[#54816] Re: [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— SASADA Koichi <ko1@...>
2013/05/06
(2013/05/06 11:50), Tanaka Akira wrote:
[#54822] Re: [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— Tanaka Akira <akr@...>
2013/05/06
2013/5/6 SASADA Koichi <[email protected]>:
[#54657] Re: [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI
— Magnus Holm <judofyr@...>
2013/04/28
On Sat, Apr 27, 2013 at 8:19 PM, ko1 (Koichi Sasada)
[#54662] Re: [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI
— SASADA Koichi <ko1@...>
2013/04/28
(2013/04/28 21:40), Magnus Holm wrote:
[#54669] Re: [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI
— SASADA Koichi <ko1@...>
2013/04/28
(2013/04/28 23:34), SASADA Koichi wrote:
[#54671] Re: [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI
— Magnus Holm <judofyr@...>
2013/04/28
On Sun, Apr 28, 2013 at 6:07 PM, SASADA Koichi <[email protected]> wrote:
[#54672] Re: [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI
— SASADA Koichi <ko1@...>
2013/04/28
(2013/04/29 1:19), Magnus Holm wrote:
[#54673] Re: [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI
— Magnus Holm <judofyr@...>
2013/04/28
On Sun, Apr 28, 2013 at 6:29 PM, SASADA Koichi <[email protected]> wrote:
[#54676] Re: [ruby-trunk - Feature #8339][Open] Introducing Geneartional Garbage Collection for CRuby/MRI
— Eric Wong <normalperson@...>
2013/04/28
"ko1 (Koichi Sasada)" <[email protected]> wrote:
[#54712] [ruby-trunk - Feature #8339] Introducing Geneartional Garbage Collection for CRuby/MRI
— "sam.saffron (Sam Saffron)" <sam.saffron@...>
2013/04/30
[#54665] [ruby-trunk - Bug #8344][Open] Status of Psych and Syck — "Eregon (Benoit Daloze)" <redmine@...>
18 messages
2013/04/28
[ruby-core:54254] [CommonRuby - Feature #8259] Atomic attributes accessors
From:
"funny_falcon (Yura Sokolov)" <funny.falcon@...>
Date:
2013-04-13 14:55:48 UTC
List:
ruby-core #54254
Issue #8259 has been updated by funny_falcon (Yura Sokolov).
I think, @ivar access should not be volatile as in any other language,
but obj.ivar could be volatile if attr_atomic :ivar were called.
Number idempotention should not be a great problem cause most of time the same
old object is used for CAS. But, yeah, we could treat numbers as a special case,
and do two step CAS (ruby-like pseudocode):
def ivar_cas(old, new)
if Number === old
stored = @ivar
if stored == old
ivar_hardware_cas(stored, new)
end
else
ivar_hardware_cas(old, new)
end
end
But I could not help with JVM internals :(
----------------------------------------
Feature #8259: Atomic attributes accessors
https://bugs.ruby-lang.org/issues/8259#change-38518
Author: funny_falcon (Yura Sokolov)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
Motivated by this gist https://gist.github.com/jstorimer/5298581 and atomic gem
I propose Class.attr_atomic which will add methods for atomic swap and CAS:
=begin
class MyNode
attr_accessor :item
attr_atomic :successor
def initialize(item, successor)
@item = item
@successor = successor
end
end
node = MyNode.new(i, other_node)
# attr_atomic ensures at least #{attr} reader method exists. May be, it should
# be sure it does volatile access.
node.successor
# #{attr}_cas(old_value, new_value) do CAS: atomic compare and swap
if node.successor_cas(other_node, new_node)
print "there were no interleaving with other threads"
end
# #{attr}_swap atomically swaps value and returns old value.
# It ensures that no other thread interleaves getting old value and setting
# new one by cas (or other primitive if exists, like in Java 8)
node.successor_swap(new_node)
=end
It will be very simple for MRI cause of GIL, and it will use atomic primitives for
other implementations.
Note: both #{attr}_swap and #{attr}_cas should raise an error if instance variable were not explicitly set before.
Example for nonblocking queue: https://gist.github.com/funny-falcon/5370416
Something similar should be proposed for Structs. May be override same method as Struct.attr_atomic
Open question for reader:
should (({attr_atomic :my_attr})) ensure that #my_attr reader method exists?
Should it guarantee that #my_attr provides 'volatile' access?
May be, (({attr_reader :my_attr})) already ought to provide 'volatile' semantic?
May be, semantic of @my_attr should have volatile semantic (i doubt for that)?
--
http://bugs.ruby-lang.org/