[rfc][icedtea-web] Cache LRU Wrapper Locking and Unit Tests

[Jie Kang]

Hello,

This patch modifies the locking system for the CacheLRUWrapper in order to use the locking provided by PropertiesFile (which was introduced in the CacheEntry Locking Fix)[1]. Both CacheEntry and CacheLRUWrapper use a PropertiesFile and the locking mechanism is the same. Tests have also been added to more thoroughly test the CacheLRUWrapper class.

[1] http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2014-August/029093.html

Reproducers and manual testing have been performed in order to ensure no regressions.

Thoughts?




Regards,

-- 

Jie Kang
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