commit 2286cdc0cab77e61b75e6fe9a45b91f6e57cd46d
author Dianne Hackborn <hackbod@google.com> Mon Jul 01 19:10:06 2013 -0700
committer Dianne Hackborn <hackbod@google.com> Tue Jul 02 11:21:04 2013 -0700
tree dd2f8bcc5adf79881e9ce27010b94b711eb53077
parent eaccd577b99b5c3e58906dd1d12c4044eb7e6d3f

Misc memory stuff.

- New Activity.reportFullyDrawn() method that applicatins can call
  when they know they are fully drawn, allowing us to have better
  app launch time info.  This data is also included in usage stats.
- Added total and free memory data "dumpsys meminfo".
- Tuned the moderate memory levels to be more aggressive about
  considering the device getting low on RAM, and thus starting
  to prune RAM from processes.
- Fixed issues in processstats when reading old data as well as
  resetting and other various fixes.

Change-Id: I20efe7451afb4edfa1aeec448328ba601c24d869

services/java/com/android/server/am/ActivityStack.java

diff --git a/services/java/com/android/server/am/ActivityStack.java b/services/java/com/android/server/am/ActivityStack.java
index 8e8bb55..9013b4a 100644
--- a/services/java/com/android/server/am/ActivityStack.java
+++ b/services/java/com/android/server/am/ActivityStack.java
@@ -205,7 +205,8 @@
      */
     boolean mConfigWillChange;
 
-    long mInitialStartTime = 0;
+    long mLaunchStartTime = 0;
+    long mFullyDrawnStartTime = 0;
 
     /**
      * Save the most recent screenshot for reuse. This keeps Recents from taking two identical
@@ -595,16 +596,20 @@
     }
 
     void setLaunchTime(ActivityRecord r) {
-        if (r.launchTime == 0) {
-            r.launchTime = SystemClock.uptimeMillis();
-            if (mInitialStartTime == 0) {
-                mInitialStartTime = r.launchTime;
+        if (r.displayStartTime == 0) {
+            r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis();
+            if (mLaunchStartTime == 0) {
+                mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime;
             }
-        } else if (mInitialStartTime == 0) {
-            mInitialStartTime = SystemClock.uptimeMillis();
+        } else if (mLaunchStartTime == 0) {
+            mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis();
         }
     }
 
+    void clearLaunchTime(ActivityRecord r) {
+        r.displayStartTime = r.fullyDrawnStartTime = 0;
+    }
+
     void stopIfSleepingLocked() {
         if (mLaunchingActivity.isHeld()) {
             if (VALIDATE_WAKE_LOCK_CALLER && Binder.getCallingUid() != Process.myUid()) {
@@ -710,6 +715,7 @@
         mLastPausedActivity = prev;
         prev.state = ActivityState.PAUSING;
         prev.task.touchActiveTime();
+        clearLaunchTime(prev);
         prev.updateThumbnail(screenshotActivities(prev), null);
 
         mService.updateCpuStats();