tree 316e242fdf315b77ab518670996598a11a91ca1b
parent 52cd2948a622a7793f315b29239c3faee7d84ab3
author Martin Wallgren <martin.wallgren@sonymobile.com> 1439298631 +0200
committer Adam Lesinski <adamlesinski@google.com> 1476284191 +0000

RRO: Synchronize access to overlays.list

idmap --scan is executed as a part of the pre-loading in ZygoteInit.
The pre loading is executed in parallel for each supported architecture
(32/64 bit). This will cause a race condition in the creation of the
overlays.list file and the idmap files for the system overlays.

Apply flock on overlays.list to prevent the file from being thrown away
and recreated when it is in use by another Zygote.

Cherry-picked from AOSP.

Bug: 28032298
Test: manual
Change-Id: I51d39f121d207b11181340b68b164b60020f0c61