Ensure that calls to EnableGrowthControl/DisableGrowthControl does not reset the last_usage_ value …

Ensure that calls to EnableGrowthControl/DisableGrowthControl does not reset the last_usage_ value as this can result in the heuristic constantly growing the heap instead of GCing. This was observed with the background compilation being turned on as we disable growth control during installation of code in the background compiler thread.

R=iposva@google.com

Committed: https://github.com/dart-lang/sdk/commit/0bd9c547924c212c19498f84025c0fd8a2df661d

[siva, 2016-03-04 23:58:21]

asiva@google.com changed reviewers:
+ iposva@google.com

[Ivan Posva, 2016-03-05 00:05:31]

LGTM -ip

[siva, 2016-03-05 00:17:35]

Description was changed from

==========
Ensure that calls to EnableGrowthControl/DisableGrowthControl does not reset the
last_usage_ value as this can result in the heuristic constantly growing the
heap instead of GCing. This was observed with the background compilation being
turned on as we disable growth control during installation of code in the
background compiler thread.
==========

to

==========
Ensure that calls to EnableGrowthControl/DisableGrowthControl does not reset the
last_usage_ value as this can result in the heuristic constantly growing the
heap instead of GCing. This was observed with the background compilation being
turned on as we disable growth control during installation of code in the
background compiler thread.

R=iposva@google.com

Committed:
https://github.com/dart-lang/sdk/commit/0bd9c547924c212c19498f84025c0fd8a2df661d
==========

[siva, 2016-03-05 00:17:36]

Committed patchset #1 (id:1) manually as
0bd9c547924c212c19498f84025c0fd8a2df661d (presubmit successful).