[#31589] [Bug #3457] URI.encode does not escape square brackets — Shyouhei Urabe <redmine@...>
Issue #3457 has been updated by Shyouhei Urabe.
4 messages
2010/08/02
[#31614] Release engineering status of 1.9.2-p0 — Yusuke ENDOH <mame@...>
Hi,
4 messages
2010/08/04
[#31666] [Bug #3677] unable to run certain gem binaries' in windows 7 — Roger Pack <redmine@...>
Bug #3677: unable to run certain gem binaries' in windows 7
10 messages
2010/08/10
[#31668] [Bug #3677][Rejected] unable to run certain gem binaries' in windows 7
— Roger Pack <redmine@...>
2010/08/10
Issue #3677 has been updated by Roger Pack.
[#31681] [Bug #3683] getgrnam on computer with NIS group (+)? — Rocky Bernstein <redmine@...>
Bug #3683: getgrnam on computer with NIS group (+)?
13 messages
2010/08/11
[#32106] [Ruby 1.9-Bug#3683] getgrnam on computer with NIS group (+)?
— Rocky Bernstein <redmine@...>
2010/09/07
Issue #3683 has been updated by Rocky Bernstein.
[#32112] Re: [Ruby 1.9-Bug#3683] getgrnam on computer with NIS group (+)?
— Nobuyoshi Nakada <nobu@...>
2010/09/07
Hi,
[#31706] [Bug #3690] method_missing in a BasicObject's singleton class - infinite recursion segfaults — Jan Lelis <redmine@...>
Bug #3690: method_missing in a BasicObject's singleton class - infinite recursion segfaults
6 messages
2010/08/13
[#31730] [Bug #3701] Gem.find_files returns empty array — Yusuke Endoh <redmine@...>
Bug #3701: Gem.find_files returns empty array
4 messages
2010/08/16
[#31739] [Backport #3702] segmentation fault while compiling 1.9.1-p430 on debian squeeze — Tomasz Pajor <redmine@...>
Backport #3702: segmentation fault while compiling 1.9.1-p430 on debian squeeze
7 messages
2010/08/17
[#31757] [Bug #3712] SEGV fails to produce stack dump / backtrace in debug build — Peter Weldon <redmine@...>
Bug #3712: SEGV fails to produce stack dump / backtrace in debug build
5 messages
2010/08/18
[#31761] [Feature #3714] Add getters for Enumerator — Marc-Andre Lafortune <redmine@...>
Feature #3714: Add getters for Enumerator
6 messages
2010/08/18
[#31762] [Backport #3715] Enumerator#size and #size= — Marc-Andre Lafortune <redmine@...>
Backport #3715: Enumerator#size and #size=
8 messages
2010/08/18
[#31798] [Bug #3726] require degradation from 1.9.1 — Yura Sokolov <redmine@...>
Bug #3726: require degradation from 1.9.1
8 messages
2010/08/20
[#31805] [Backport #3728] IO.select is not documented. — Mike Perham <redmine@...>
Backport #3728: IO.select is not documented.
5 messages
2010/08/20
[#31806] 1.9.1 has marshal bugs in everything but p129 — Ryan Davis <ryand-ruby@...>
Is there any chance we can release a 1.9.1 that fixes the current =
3 messages
2010/08/20
[#31843] Garbage Collection Question — Asher <asher@...>
This question is no doubt a function of my own lack of understanding, =
17 messages
2010/08/25
[#31861] Re: Garbage Collection Question
— Roger Pack <rogerdpack2@...>
2010/08/26
> The question in short: when an object goes out of scope and has no
[#31862] Re: Garbage Collection Question
— Asher <asher@...>
2010/08/26
Right - so how does a pointer ever get off the stack?
[#31873] Re: Garbage Collection Question
— Kurt Stephens <ks@...>
2010/08/27
On 8/26/10 11:51 AM, Asher wrote:
[#31894] Re: Garbage Collection Question
— Asher <asher@...>
2010/08/27
I very much appreciate the response, and this is helpful in describing =
[#31896] Re: Garbage Collection Question
— Evan Phoenix <evan@...>
2010/08/27
You have introduced something called a "root node" without defining it. =
[#31899] Re: Garbage Collection Question
— Asher <asher@...>
2010/08/27
[#31851] [Bug #3747] Possible bug of String#count? — Ruohao Li <redmine@...>
Bug #3747: Possible bug of String#count?
4 messages
2010/08/26
[#31868] [Bug #3750] SEGV: ruby -rprofile test/ruby/test_assignment.rb — Peter Weldon <redmine@...>
Bug #3750: SEGV: ruby -rprofile test/ruby/test_assignment.rb
5 messages
2010/08/26
[#31885] Avoiding $LOAD_PATH pollution — Eric Hodel <[email protected]>
Last year Nobu asked me to propose an API for adding an object to
21 messages
2010/08/27
[#31906] Re: Avoiding $LOAD_PATH pollution
— Run Paint Run Run <runrun@...>
2010/08/28
> The lookup object pushed onto $LOAD_PATH must respond to #path_for. The
[#31910] Re: Avoiding $LOAD_PATH pollution
— Eric Hodel <[email protected]>
2010/08/28
On Aug 28, 2010, at 19:30, Run Paint Run Run wrote:
[#31911] Re: Avoiding $LOAD_PATH pollution
— Run Paint Run Run <runrun@...>
2010/08/28
>> How confident are we that this API would be sufficient for replacing the
[#34260] Re: Avoiding $LOAD_PATH pollution
— "zimbatm ..." <jonas@...>
2011/01/08
Hi Eric,
[#34262] Re: Avoiding $LOAD_PATH pollution
— "Jonas Pfenniger (zimbatm)" <jonas@...>
2011/01/08
Just a note for future references. While playing with require, I found
[#34264] Re: Avoiding $LOAD_PATH pollution
— Eric Hodel <[email protected]>
2011/01/09
On Jan 8, 2011, at 12:08, zimbatm ... wrote:
[#31914] [Ruby 1.8.7-RubySpec#3757][Open] GC bug after loading gem — Joel VanderWerf <redmine@...>
RubySpec #3757: GC bug after loading gem
5 messages
2010/08/28
[#31929] Proposal: Autoload with block — Magnus Holm <judofyr@...>
= A proposal for autoload w/block:
8 messages
2010/08/29
[#31930] Re: Proposal: Autoload with block
— James Tucker <jftucker@...>
2010/08/29
Sorry to plug my own stuff, but you might find subload of some interest =
[#31933] Re: Proposal: Autoload with block
— Run Paint Run Run <runrun@...>
2010/08/29
Magnus, have you seen http://redmine.ruby-lang.org/issues/show/462 ?
[#31934] Re: Proposal: Autoload with block
— Magnus Holm <judofyr@...>
2010/08/29
That's interesting, but I don't buy matz' argument:
[#31947] not use system for default encoding — Roger Pack <rogerdpack2@...>
It strikes me as a bit "scary" to use system locale settings to
19 messages
2010/08/30
[#31960] Re: not use system for default encoding
— Run Paint Run Run <runrun@...>
2010/08/30
> It strikes me as a bit "scary" to use system locale settings to *arbitrar=
[#33235] Re: not use system for default encoding
— Brian Candler <B.Candler@...>
2010/11/17
NARUSE, Yui wrote on 2010-11-15 11:07:
[#31969] [Ruby 1.9-Feature#3773][Open] Module#parent — Thomas Sawyer <redmine@...>
Feature #3773: Module#parent
9 messages
2010/08/31
[#31971] Change Ruby's License to BSDL + Ruby's dual license — "NARUSE, Yui" <naruse@...>
Ruby's License will change to BSDL + Ruby's dual license
16 messages
2010/08/31
[#31972] Re: Change Ruby's License to BSDL + Ruby's dual license
— "NARUSE, Yui" <naruse@...>
2010/08/31
(2010/09/01 1:30), NARUSE, Yui wrote:
[#32002] Re: Change Ruby's License to BSDL + Ruby's dual license
— Joshua Ballanco <jballanc@...>
2010/09/01
On Aug 31, 2010, at 9:50 AM, NARUSE, Yui wrote:
[#31976] Re: Change Ruby's License to BSDL + Ruby's dual license
— Lucas Nussbaum <lucas@...>
2010/08/31
On 01/09/10 at 01:30 +0900, NARUSE, Yui wrote:
[#31978] Re: Change Ruby's License to BSDL + Ruby's dual license
— "NARUSE, Yui" <naruse@...>
2010/08/31
(2010/09/01 2:36), Lucas Nussbaum wrote:
[#32364] Re: Change Ruby's License to BSDL + Ruby's dual license
— "NARUSE, Yui" <naruse@...>
2010/09/13
I wrote a concrete patch.
[ruby-core:31861] Re: Garbage Collection Question
From:
Roger Pack <rogerdpack2@...>
Date:
2010-08-26 16:32:17 UTC
List:
ruby-core #31861
> The question in short: when an object goes out of scope and has no > references that were left to it, how does it get collected? Conceptually > this seems easy - the GC walks the heap to see if the contents are still > valid pointers to the heap. Once the pointer is invalid, it makes total > sense to me how the rest proceeds. But how does the pointer to the heap e= ver > become invalid? It walks the stack, and (for sake of ease of understanding) marks all pointers still on the stack as "live" then it marks all of their children as "live" then all of their grandchildren, etc. Then it traverses the entire heap, looking for objects that haven't been marked as live, and "frees" them. NB that these two stages are separate, so they don't conflict. HTH. -r > Hopefully my example and summary will clarify: > > require 'pp' > class Hash::Weak < Hash > > =A0=A0def []( key ) > =A0=A0 =A0# get the stored ID - a FixNum, not an object reference to our > weak-referenced object > =A0=A0 =A0obj_id =3D super( key.to_sym ) > =A0=A0 =A0# theoretically this should cause non-referenced objects to get= cleaned > up > =A0=A0 =A0# so long as nothing looks like a pointer or reference to it > =A0=A0 =A0ObjectSpace.garbage_collect > =A0=A0 =A0# now get our object from ID > =A0=A0 =A0# if it had no references it should have been GC'd and we shoul= d get an > =A0=A0 =A0# rb_eRangeError "is not id value" (expected) or "is recycled o= bject" > (possible) > =A0=A0 =A0obj =3D ObjectSpace._id2ref( obj_id ) > =A0=A0 =A0return obj > =A0=A0end > > =A0=A0def []=3D( key, object ) > =A0=A0 =A0# FixNum have a constant ID for value, so can't be copied and c= an't be > garbage collected > =A0=A0 =A0# so object.__id__ cannot be a reference to a child of object a= nd > therefore cannot prevent > =A0=A0 =A0# garbage collection on the object > =A0=A0 =A0super( key.to_sym, object.__id__ ) > =A0=A0end > > end > ################################################## > weak_hash =3D Hash::Weak.new > class TestClass > end > test_object =3D TestClass.new > puts 'storing test object' > weak_hash[ :key ] =3D test_object > puts 'hash now contains object id: ' + weak_hash.pretty_inspect > print 'retrieving stored test object from hash (should work/be non-nil): = ' > valid_key =3D weak_hash[ :key ] > pp valid_key > class AnotherClass > end > puts 'setting variable referring to test object (ID: ' + > test_object.__id__.to_s + ') to nil' > test_object =3D nil > puts 'ID for variable referring to test object is now: ' + > test_object.__id__.to_s > print 'getting test object (should fail with rb_eRangeError): ' > invalid_key =3D weak_hash[ :key ] > pp invalid_key > # error - returns valid key > ################################################## > # object is created, given an id > # variable is assigned to id > # variable is changed to new object (including nil) > # variable gets the id of new object > # previous reference made by variable remains in object space (no valid > references) > # gc starts > # rb_gc_mark calls gc_mark, marks VM instance (#<RubyVM:0x000001008700b8>= ) > # gc_mark calls gc_mark_children, marks all children of VM > # first, the VM class (RubyVM), and then its children > # =A0 then its class instance (#<Class:RubyVM>), and then its children > # =A0 =A0 then its class instance (#<Class:#<Class:RubyVM>>) and its chil= dren > # =A0 =A0 =A0 then its class instance (#<Class:#<Class:Class>>) and its c= hildren > # =A0 =A0 =A0 =A0 then gc_mark_children calls mark_tbl to mark its table = (the class > table) > # =A0 =A0 =A0 =A0 =A0 mark_tbl marks all children of the class table, sta= rting with > Class > # =A0 =A0 =A0 =A0 =A0 =A0 Class marks its children, first of all #<Class:= Module> > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 #<Class:Module> marks its children, first o= f all > #<Class:#<Class:Module>> > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 #<Class:#<Class:Module>> marks its chil= dren, which > includes a table of classes > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 mark_tbl marks each of classes, whi= ch first includes > #<Class:Object> > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 #<Class:Object> has a table of = entries that it marks, > first of all Object > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Object has a table that it = marks, first of all its > binding context (presumably main first?) #<Binding:0x00000100870068> > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 #<Binding:0x00000100870= 068> marks its children, > which calls binding_mark, which calls rb_gc_mark, which calls gc_mark on = the > Ruby environment: #<RubyVM::Env:0x00000100854bd8> > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 #<RubyVM::Env:0x000= 00100854bd8> marks its > children which calls env_mark > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 env_mark calls = rb_gc_mark_locations on the > range covered by the environment's declared memory space, which calls > gc_mark_locations > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 gc_mark_loc= ations calls mark_locations_array > on the space marked by the start and length of environment > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 mark_lo= cations_array looks at the > environment as an array of long, and calls is_pointer_to_heap on each one > # =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if = (long)slice is the address of a valid > pointer on the heap, returns TRUE, which causes gc_mark to be called on t= he > object > #***** =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0obj= ect, defined by ID, matches with > (long)slice because it has not yet been collected; it is therefore marked= as > still existing because it has a valid pointer > # =3D> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0if this were true, no object would > ever be garbage collected; so how is any object ever garbage collected? > > Any help understanding what's going on is much appreciated. > Thanks, > Asher