commit f8cb1781a4e4be5df1f845206f7b37ed89092b64
author Mathieu Chartier <mathieuc@google.com> Fri Mar 18 18:45:41 2016 -0700
committer Mathieu Chartier <mathieuc@google.com> Mon Mar 21 11:41:33 2016 -0700
tree ce2c717d6a99a18f66deace5575357c746f4e2ea
parent 162629ee8ac0fee2df0c0cdec27dff34bc6f0062

Move process state into runtime

Clean up.

Bug: 27420435

(cherry picked from commit f8484c8b55f4b423048f94dfabbe44110a039a9b)

Change-Id: Ia20781ee36e6a31c88ca41d3866b26813cff434d

runtime/gc/collector/mark_sweep.cc

diff --git a/runtime/gc/collector/mark_sweep.cc b/runtime/gc/collector/mark_sweep.cc
index 6073fc8..894ceba 100644
--- a/runtime/gc/collector/mark_sweep.cc
+++ b/runtime/gc/collector/mark_sweep.cc
@@ -845,7 +845,9 @@
 };
 
 size_t MarkSweep::GetThreadCount(bool paused) const {
-  if (heap_->GetThreadPool() == nullptr || !heap_->CareAboutPauseTimes()) {
+  // Use less threads if we are in a background state (non jank perceptible) since we want to leave
+  // more CPU time for the foreground apps.
+  if (heap_->GetThreadPool() == nullptr || !Runtime::Current()->InJankPerceptibleProcessState()) {
     return 1;
   }
   return (paused ? heap_->GetParallelGCThreadCount() : heap_->GetConcGCThreadCount()) + 1;