commit d81877cad7a6e9b97dfdc4c63984f218b7e31df5
author Mathieu Chartier <mathieuc@google.com> Wed Sep 03 21:26:36 2014 -0700
committer The Android Automerger <android-build@google.com> Thu Sep 04 11:17:44 2014 -0700
tree b0e5cda5aa7aa9915b9bf64a57f66ea28750cb78
parent c78dc139e748bf618e585c48a4508c894052ea2a

Fix heap trimmer daemon sleeping.

Problem:
Heap trimmer daemon sleeping caused app launch occasionally to take a
while due stopping the heap trimming thread taking a long time.

The heap trimmer thread now never sleeps, we prevent issues caused
by frequent back and forth process state changes by only
transitioning to background if it has been kCollectorTransitionWait
time since the last transition to background. Similar logic for heap
trimming.

Bug: 17310019

Change-Id: I23980421cc388f36b66a4c03ed15dd11d43f59b5