tree 5cc26d9c820ae95509f35316785eb2b2ea02b34b
parent ed254e0a87ce324490798a75a61fb81e73e12de8
author Suharsh Sivakumar <suharshs@google.com> 1464225952 -0700
committer Suharsh Sivakumar <suharshs@google.com> 1464225952 -0700

jni: Ensure global ref of client is created during async call.

Sometimes a java client gets garbage collected while an async
startcall is happening. This cleans up the ref count for the go client,
which causes a panic when we try to invoke start call.

This changes creates a general way for DoAsyncCall to release resources
(ie. call DeleteGlobalRef) after the call is complete. For this particular
problem, this allows us to create a global ref for the java client,
preventing it from being collected during the duration of startcall.

Change-Id: Ifadeabbc374aee2c3ab4320eb1dcb7e2e1c1c7f9