commit 099cffea1f9ae88e235f0793b29945ab9cc67ebf
author davidln <davidln@google.com> Wed Jun 20 11:10:29 2018 -0700
committer David Nelloms <davidln@google.com> Fri Jun 29 18:23:25 2018 +0000
tree d593e1c438218a2ab12542e296989e5a0c090c63
parent 9cfa09e40cbb3d5041ed664682094a86fcc3d9cd

Reduce HVAC DataStore coalesce time so that it is not perceptible.

Intentional repeat updates, such as changing temperature with a hardware control, are visually delayed creating the perception of an unresponsive system. Long-term, we plan to remove this class.

Bug: 109825998

Test: build, test with vhal emulator to ensure values still propagate.
Change-Id: I2080822558c50fcbc62eeab8e10b5cd40014150b

src/com/android/car/hvac/DataStore.java

diff --git a/src/com/android/car/hvac/DataStore.java b/src/com/android/car/hvac/DataStore.java
index 4a234e2..83ed5d3 100644
--- a/src/com/android/car/hvac/DataStore.java
+++ b/src/com/android/car/hvac/DataStore.java
@@ -32,7 +32,7 @@
  * them, keeping the application's view of the world sane.
  */
 public class DataStore {
-    private static final long COALESCE_TIME_MS = TimeUnit.SECONDS.toMillis(2);
+    private static final long COALESCE_TIME_MS = 50L;
 
     @GuardedBy("mTemperature")
     private SparseArray<Float> mTemperature = new SparseArray<Float>();