LoadCache holds strong references to Classloaders - indirectly

[rajiv.shivane]

Hi Andrew,

loaderMaps in LoadCache is a WeakHashMap. But since the secondary map in the loaderMaps, holds a strong reference to the class loaded by the Classloader (key of the loaderMap), the ClassLoader is not collectable.

A test case for this is at: LoadCacheReferenceTest.java · GitHub  ... for convenience I did not import junit, but it can be easily converted in junit tests.

I believe if the secondary map held a WeakReference to the Class, all the three tests in the test case will pass.

Thanks,

Rajiv

[adinn]

Hi Rajiv,

rajiv.shivane  wrote:

loaderMaps in LoadCache is a WeakHashMap. But since the secondary map in the loaderMaps, holds a strong reference to the class loaded by the Classloader (key of the loaderMap), the ClassLoader is not collectable.

  . . .

I believe if the secondary map held a WeakReference to the Class, all the three tests in the test case will pass.

Doh!

Yes, of course. Rookie error :-).

I have raised this JIRA.