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Posted to issues@commons.apache.org by "Phil Steitz (JIRA)" <ji...@apache.org> on 2010/04/10 16:25:41 UTC
[jira] Updated: (POOL-158) References to
GenericKeyedObjectPool._minIdle are not always synchronized
[ https://issues.apache.org/jira/browse/POOL-158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Phil Steitz updated POOL-158:
-----------------------------
Fix Version/s: 1.5.5
Affects Version/s: 1.5.4
1.5.3
1.5.2
1.5.1
1.5
1.4
1.2
For correctness in evict, we probably technically need to move the read inside the synch block (otherwise in theory a write between lock acquisitions could invalidate the decision). The ensureMinIdle read is similar, so moving both reads inside the synchs (carefully :) seems best. Big +1 for deprecating the setter with aim to make final in 2.0.
> References to GenericKeyedObjectPool._minIdle are not always synchronized
> -------------------------------------------------------------------------
>
> Key: POOL-158
> URL: https://issues.apache.org/jira/browse/POOL-158
> Project: Commons Pool
> Issue Type: Bug
> Affects Versions: 1.2, 1.4, 1.5, 1.5.1, 1.5.2, 1.5.3, 1.5.4
> Reporter: Sebb
> Fix For: 1.5.5
>
>
> References to GenericKeyedObjectPool._minIdle are not always synchronized:
> The ensureMinIdle() and evict() methods both access the field outside the synch. block.
> This is particularly bad as they are called from the timer thread.
> The references could use getMinIdle(), which is synch., or it would probably be cheaper to move the references into the synch. blocks.
> Better yet, can the field be made final? setMinIdle() is currently only called from Test cases and setConfig() which is not referenced AFAICT.
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