commit 28ab86f0d47aa008258f368fde2506ac0ea108cc
author Vishnu Nair <vishnun@google.com> Thu Sep 09 19:56:40 2021 -0700
committer Vishnu Nair <vishnun@google.com> Mon Sep 13 17:21:06 2021 +0000
tree 49c5a0f438aa2ee4f177406587ef795648c4beb5
parent 6c740e9394f761ba98aa94bd99068051c0045906

SurfaceView: Fix SurfaceControl synchronization issues

Hold the surface control lock in PositionUpdateListener
callbacks before checking if the SurfaceControl will
be null. UI tread might release it after the checks
causing crashes.

Also fix a case where the ViewRootImpl may be null
in the positionChanged callback.

Bug: 199261027
Test: run steps in bug
Test: go/wm-smoke
Change-Id: I5a4cac35fe14356389b29268fddf9703b25c03aa
(cherry picked from commit 2cafd8b44d0b4c13b16fdcd2557352ec5496fcc3)