tree 0625e06ba9ecd4637de81bf04b04c33c6f7dad1a
parent 143f714e0f85c0091f3f30e8b259724dd80fbd27
author bepheis gao <bepheis@gmail.com> 1597069247 +0800
committer Louis Chang <louischang@google.com> 1597283238 +0800

Avoid deadlock during boot up

Cp from aosp/1382500 to fix merge conflict

Avoid a deadlock that may occurs during boosting time.
if we are starting system ui while another thread is executing
the enableScreenAfterBoot function at the same time,
the deadlock occurs

BUG: 162566198

Change-Id: Ief47cad91cbbc498179cd38e653bd1fa565cee2e
Merged-In: Ief47cad91cbbc498179cd38e653bd1fa565cee2e