tree 549b311688bd4fe789521277d2ce6eb0557d689f
parent 6b34b31059fbe21ed947c0213df56e04f6098f59
author Hugo Benichi <hugobenichi@google.com> 1460510139 +0900
committer Hugo Benichi <hugobenichi@google.com> 1460513811 +0900

Add volatile qualifier to boolean variable

DHCP receive thread was spinning on a boolean variable to know when to
stop. That variable had no volatile qualifier, potentially preventing
the thread from stopping at all. Without a volatile qualifier, the reads
and writes in halt() could be reordered in such a way that the running
thread is interrupted before mStopped is set t true. Also, the optimizer
could decide to hoist mStopped in a register inside the running thread,
preventing the loop from exiting.

Change-Id: I5b30c1247808114f0e5b46e230978ee7ea18ab8e