tree c2abddefa60e4df713a63f3cca202bea0eae94b1
parent 6d2569e4260293816b8b9416d5e6993f843869b2
author Alex Vakulenko <avakulenko@chromium.org> 1414601632 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1415212214 +0000

buffet: Fix issues in StateChangeQueue

Addressed additional code review issues brought after the original
code has been published.

- NotifyPropertiesUpdated() now takes timestamp and property set
  as separate parameters to simplify implementation of StateManager.
- StateChangeQueue::max_queue_size_ is made 'const'
- StateChangeQueue now maintains a time-to-event map instead of
  a vector of StateChange. This allows to keep the events sorted
  by time stamp. Also adding discrete events with the same time stamp
  coalesces the property changes.
- added a unit test for coalescing property set changes based on
  the timestamp.

BUG=None
TEST=FEATURES=test emerge-link buffet

Change-Id: I309816d1f040558620fa68a844b05251d0e4319b
Reviewed-on: https://chromium-review.googlesource.com/226300
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Anton Muhin <antonm@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
Tested-by: Alex Vakulenko <avakulenko@chromium.org>