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Backport #5342
closedConditionVariable can wake a Thread that is no longer waiting on it
Status:
Rejected
Assignee:
Description
See gist at https://gist.github.com/1228184 for a reproducible test case.
Sequence is like this:
- Main thread spawns Thread 1. Thread 1 pauses 0.5 seconds and then signals cond variable 1.
- Main thread waits on cond variable 1 and times out after 0.3 seconds
- Main thread spawns Thread 2. Thread 2 pauses 0.5 seconds and then signals cond variable 2.
- Main thread waits on cond variable 2 with a timeout of 1.0 seconds.
I would expect this test to take 0.8 seconds. Instead the main thread is woken by the original cond variable 1 after 0.5 seconds total.
The code works as expected on JRuby 1.6.4.
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