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Feature #18256

open

Change the canonical name of Thread::Mutex, Thread::Queue, Thread::SizedQueue and Thread::ConditionVariable to just Mutex, Queue, SizedQueue and ConditionVariable

Added by Eregon (Benoit Daloze) over 2 years ago. Updated over 2 years ago.

Status:
Open
Assignee:
-
Target version:
-
[ruby-core:105672]

Description

Currently these 4 classes are defined as both constants of Object and of Thread.

On CRuby 3.0.2, their #inspect shows they were first defined under Thread and then aliased in Object:

$ ruby -ve 'p [Mutex, Queue, SizedQueue, ConditionVariable]'
ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-linux]
[Thread::Mutex, Thread::Queue, Thread::SizedQueue, Thread::ConditionVariable]

FWIW this contrasts to TruffleRuby which has:

$ ruby -ve 'p [Mutex, Queue, SizedQueue, ConditionVariable]'
truffleruby 22.0.0-dev-589c944e, like ruby 2.7.4, GraalVM CE Native [x86_64-linux]
[Mutex, Queue, SizedQueue, ConditionVariable]

(because these classes are all core now and I thought the Thread:: prefix was the alias since they moved to core)

However I believe most usages out there do not use the Thread:: prefix, or in other words almost nobody uses the Thread:: prefix for those classes.
And it seems very clearly confirmed by gem-codesearch:

$ gem-codesearch 'Thread::Mutex' | wc -l
254
$ gem-codesearch '\bMutex\b' | wc -l
19378

About 75x more common to use Mutex than Thread::Mutex it seems.

$ gem-codesearch 'Thread::Queue' | wc -l
138
$ gem-codesearch '\bQueue\b' | wc -l
38174

About 276x more common to use Queue than Thread::Queue it seems.

$ gem-codesearch 'Thread::ConditionVariable' | wc -l
110
$ gem-codesearch '\bConditionVariable\b' | wc -l
2145

About 19.5x more common to use ConditionVariable than Thread::ConditionVariable it seems.

$ gem-codesearch 'Thread::SizedQueue' | wc -l
27
$ gem-codesearch '\bSizedQueue\b' | wc -l
633

About 23x more common to use SizedQueue than Thread::SizedQueue it seems.

So I propose to update the canonical names of these classes to be without the Thread:: prefix, to represent the vast majority of usages, and also the fact these classes are core now and not stdlib.
In other words, for 3.1.0 I propose:

$ ruby -ve 'p [Mutex, Queue, SizedQueue, ConditionVariable]'
ruby 3.1.0 ...
[Mutex, Queue, SizedQueue, ConditionVariable]
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