Summary:
@public
Completely removes the usage of weak JNI refs.
This is great, because node allocation and deallocation no longer go through a VM-global lock to access the weak reference table.
This is also great, because we can no longer overflow that ref table.
Performance is comparable to weak refs.
Reviewed By: marco-cova
Differential Revision: D14423068
fbshipit-source-id: 62003d2d6fd971e91460a26fb3477046f26e2ba5
3331a9e480