tree 963d83166b27c9e94c8ea03665bcefe8b6ca1a0a
parent 8be68867cd328911a440eec2ba53f52f80aa28c6
author zachh <zachh@google.com> 1522788712 -0700
committer Copybara-Service <copybara-piper@google.com> 1522800441 -0700

Don't deadlock in DialerDatabaseHelper.

The fix is to use FutureSerializer instead of synchronizing on the method. FutureSerializer provides the guarantee that the next AsyncCallable won't even be submitted until the ListenableFuture returned by the previous one completes.

Bug: 73877234
Test: added sleep to update task, and verified that resuming activity > 5 times does not deadlock the app
PiperOrigin-RevId: 191494662
Change-Id: I5dc2bed7e117fd3ba5a3cd6a8c39c82a565ce070