Queue#push and #pop synchronization failure
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Key: JRUBY-4858
URL: http://jira.codehaus.org/browse/JRUBY-4858
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.5.1
Reporter: Hiroshi Nakamura
Attachments: 0001-Test-for-Queue-push-and-pop-synchronization.patch
Queue#push and #pop in lib/thread.rb (imported from MRI) uses
Thread.exclusive for Queue#push and #pop synchronization. It ensures
Queue#push does not return until it wakes up a thread and the thread
consumes the queue when the queue has waiting threads.
We cannot use Thread.exclusive (1.8 mode only) for that purpose in JRuby.
How do we solve this?
1. Implement Queue with Mutex like CRuby 1.9 (it doesn't have Thread.exclusive)
2. Reimplement thread.rb in Java.
3. Improve Thread.exclusive of JRuby and let it work like MRI. Must be hard.
4. Mark as 'won't fix'.
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