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https://issues.apache.org/jira/browse/VFS-326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ralph Goers resolved VFS-326.
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Resolution: Fixed
Fix Version/s: 2.0
DefaultFileMonitor and SoftRefFilesCache were modified to make the boolean
variables volatile. In addition, SoftRefFllesCache was modified to use a
ConcurrentHashMap and locks instead of synchronization.
> Multi-threading issues
> ----------------------
>
> Key: VFS-326
> URL: https://issues.apache.org/jira/browse/VFS-326
> Project: Commons VFS
> Issue Type: Bug
> Reporter: Sebb
> Assignee: Sebb
> Fix For: 2.0
>
>
> SoftRefFilesCache and DefaultFileMonitor use a boolean to communicate between
> threads, but don't use synchronisation.
> There is no guarantee that the updated value of the boolean will be seen by
> the other thread. Adding volatile would fix this.
> There are also various private instance fields that are not modified after
> construction.
> If these were made final, it would improve thread-safety because the fields
> would then be published correctly across threads.
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