commit 1e37090caacc59c77c176db3329a4ad393e20013
author Mathieu Chartier <mathieuc@google.com> Thu Jul 18 10:58:01 2013 -0700
committer Mathieu Chartier <mathieuc@google.com> Mon Nov 25 17:03:40 2013 -0800
tree 27f9658b9600b7219f84c6a8d004aaacbda3a461
parent 9d4ac9703657142b190d3c256de7c3329e5a4b29

Update Dalvik process state through VMRuntime.

We now update Dalvik's process state through VMRuntime when the
process state changes in ActivityThread. This is used to determine
when to do trimming and will be used to determine when to do
compaction in the near future.

Bug: 8981901

Change-Id: I5eea272ba4ec2d1ed789b058d6457cb3c1fcf777

core/java/android/app/ActivityThread.java

diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index df63ab3..23dc6dd2 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -117,6 +117,7 @@
 import libcore.io.IoUtils;
 
 import dalvik.system.CloseGuard;
+import dalvik.system.VMRuntime;
 
 final class RemoteServiceException extends AndroidRuntimeException {
     public RemoteServiceException(String msg) {
@@ -1269,8 +1270,15 @@
             synchronized (this) {
                 if (mLastProcessState != processState) {
                     mLastProcessState = processState;
-
-                    // Update Dalvik state here based on ActivityManager.PROCESS_STATE_* constants.
+                    // Update Dalvik state based on ActivityManager.PROCESS_STATE_* constants.
+                    final int DALVIK_PROCESS_STATE_JANK_PERCEPTIBLE = 0;
+                    final int DALVIK_PROCESS_STATE_JANK_IMPERCEPTIBLE = 1;
+                    int dalvikProcessState = DALVIK_PROCESS_STATE_JANK_IMPERCEPTIBLE;
+                    // TODO: Tune this since things like gmail sync are important background but not jank perceptible.
+                    if (processState <= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) {
+                        dalvikProcessState = DALVIK_PROCESS_STATE_JANK_PERCEPTIBLE;
+                    }
+                    VMRuntime.getRuntime().updateProcessState(dalvikProcessState);
                     if (false) {
                         Slog.i(TAG, "******************* PROCESS STATE CHANGED TO: " + processState
                                 + (fromIpc ? " (from ipc": ""));