Add drop box reports of low memory.

We are tagging these as "watchdog" to make them visible in the
reporting tools.

Also new am command to kill all background processes, mostly to make
it easier to test this stuff.

Change-Id: Ib9dc4747cd8bd44156fdf11d6a087cd4272203eb

2 files changed, 21 insertions, 2 deletions

diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index b4471f0..7994d7c 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -1092,6 +1092,13 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeNoException();
             return true;
         }
+
+        case KILL_ALL_BACKGROUND_PROCESSES_TRANSACTION: {
+            data.enforceInterface(IActivityManager.descriptor);
+            killAllBackgroundProcesses();
+            reply.writeNoException();
+            return true;
+        }
         
         case FORCE_STOP_PACKAGE_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
@@ -2906,7 +2913,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
     public void killBackgroundProcesses(String packageName) throws RemoteException {
         Parcel data = Parcel.obtain();
         Parcel reply = Parcel.obtain();
@@ -2917,7 +2924,17 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
+    public void killAllBackgroundProcesses() throws RemoteException {
+        Parcel data = Parcel.obtain();
+        Parcel reply = Parcel.obtain();
+        data.writeInterfaceToken(IActivityManager.descriptor);
+        mRemote.transact(KILL_ALL_BACKGROUND_PROCESSES_TRANSACTION, data, reply, 0);
+        reply.readException();
+        data.recycle();
+        reply.recycle();
+    }
+
     public void forceStopPackage(String packageName) throws RemoteException {
         Parcel data = Parcel.obtain();
         Parcel reply = Parcel.obtain();
diff --git a/core/java/android/app/IActivityManager.java b/core/java/android/app/IActivityManager.java
index 26813bf..5222d37 100644
--- a/core/java/android/app/IActivityManager.java
+++ b/core/java/android/app/IActivityManager.java
@@ -234,6 +234,7 @@ public interface IActivityManager extends IInterface {
     public void getMemoryInfo(ActivityManager.MemoryInfo outInfo) throws RemoteException;
     
     public void killBackgroundProcesses(final String packageName) throws RemoteException;
+    public void killAllBackgroundProcesses() throws RemoteException;
     public void forceStopPackage(final String packageName) throws RemoteException;
     
     // Note: probably don't want to allow applications access to these.
@@ -605,4 +606,5 @@ public interface IActivityManager extends IInterface {
     int GET_PROCESS_PSS_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+136;
     int SHOW_BOOT_MESSAGE_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+137;
     int DISMISS_KEYGUARD_ON_NEXT_ACTIVITY_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+138;
+    int KILL_ALL_BACKGROUND_PROCESSES_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+139;
 }