Adding am send-trim-memory command

This patch adds a send-trim-memory command to the ActivityManager to allow
for better debugging&testing.

The command is
adb shell am send-trim-memory [--user <USER_ID>] <PROCESS> <LEVEL>
whereas LEVEL can be one of the following:
[HIDDEN|RUNNING_MODERATE|BACKGROUND|RUNNING_LOW|MODERATE|
 RUNNING_CRITICAL|COMPLETE]

Bug: 21633189
Change-Id: I7a41ce02c3c9043ffd3e5aaa791f7b7306a9de49

1 files changed, 49 insertions, 21 deletions

diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index e4def1e..ff52e67 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -1546,21 +1546,21 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeInt(res ? 1 : 0);
             return true;
         }
-        
+
         case STOP_APP_SWITCHES_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             stopAppSwitches();
             reply.writeNoException();
             return true;
         }
-        
+
         case RESUME_APP_SWITCHES_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             resumeAppSwitches();
             reply.writeNoException();
             return true;
         }
-        
+
         case PEEK_SERVICE_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             Intent service = Intent.CREATOR.createFromParcel(data);
@@ -1570,7 +1570,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeStrongBinder(binder);
             return true;
         }
-        
+
         case START_BACKUP_AGENT_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             ApplicationInfo info = ApplicationInfo.CREATOR.createFromParcel(data);
@@ -1623,7 +1623,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeNoException();
             return true;
         }
-        
+
         case GET_PROCESS_MEMORY_INFO_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             int[] pids = data.createIntArray();
@@ -1641,7 +1641,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeNoException();
             return true;
         }
-        
+
         case OVERRIDE_PENDING_TRANSITION_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             IBinder token = data.readStrongBinder();
@@ -1652,7 +1652,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeNoException();
             return true;
         }
-        
+
         case IS_USER_A_MONKEY_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             boolean areThey = isUserAMonkey();
@@ -1660,7 +1660,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeInt(areThey ? 1 : 0);
             return true;
         }
-        
+
         case SET_USER_IS_MONKEY_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             final boolean monkey = (data.readInt() == 1);
@@ -1736,7 +1736,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeNoException();
             return true;
         }
-        
+
         case IS_TOP_ACTIVITY_IMMERSIVE_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             boolean isit = isTopActivityImmersive();
@@ -1888,7 +1888,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeNoException();
             return true;
         }
-        
+
         case SWITCH_USER_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             int userid = data.readInt();
@@ -2548,6 +2548,17 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeInt(res);
             return true;
         }
+
+        case SET_PROCESS_MEMORY_TRIM_TRANSACTION: {
+            data.enforceInterface(IActivityManager.descriptor);
+            String process = data.readString();
+            int userId = data.readInt();
+            int level = data.readInt();
+            boolean res = setProcessMemoryTrimLevel(process, userId, level);
+            reply.writeNoException();
+            reply.writeInt(res ? 1 : 0);
+            return true;
+        }
         }
 
         return super.onTransact(code, data, reply, flags);
@@ -3619,7 +3630,7 @@ class ActivityManagerProxy implements IActivityManager
         reply.recycle();
         return res;
     }
-    
+
     public ComponentName startService(IApplicationThread caller, Intent service,
             String resolvedType, int userId) throws RemoteException
     {
@@ -3722,7 +3733,7 @@ class ActivityManagerProxy implements IActivityManager
         reply.recycle();
         return res;
     }
-    
+
     public void publishService(IBinder token,
             Intent intent, IBinder service) throws RemoteException {
         Parcel data = Parcel.obtain();
@@ -3765,7 +3776,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
     public IBinder peekService(Intent service, String resolvedType) throws RemoteException {
         Parcel data = Parcel.obtain();
         Parcel reply = Parcel.obtain();
@@ -4455,7 +4466,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
     public void getMyMemoryState(ActivityManager.RunningAppProcessInfo outInfo)
             throws RemoteException
     {
@@ -4519,7 +4530,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         return res;
     }
-    
+
     public void stopAppSwitches() throws RemoteException {
         Parcel data = Parcel.obtain();
         Parcel reply = Parcel.obtain();
@@ -4529,7 +4540,7 @@ class ActivityManagerProxy implements IActivityManager
         reply.recycle();
         data.recycle();
     }
-    
+
     public void resumeAppSwitches() throws RemoteException {
         Parcel data = Parcel.obtain();
         Parcel reply = Parcel.obtain();
@@ -4564,7 +4575,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
     public void closeSystemDialogs(String reason) throws RemoteException {
         Parcel data = Parcel.obtain();
         Parcel reply = Parcel.obtain();
@@ -4575,7 +4586,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
     public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids)
             throws RemoteException {
         Parcel data = Parcel.obtain();
@@ -4601,7 +4612,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-        
+
     public void overridePendingTransition(IBinder token, String packageName,
             int enterAnim, int exitAnim) throws RemoteException {
         Parcel data = Parcel.obtain();
@@ -4616,7 +4627,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
     public boolean isUserAMonkey() throws RemoteException {
         Parcel data = Parcel.obtain();
         Parcel reply = Parcel.obtain();
@@ -4872,7 +4883,7 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         return res;
     }
-    
+
     public int startActivities(IApplicationThread caller, String callingPackage,
             Intent[] intents, String[] resolvedTypes, IBinder resultTo,
             Bundle options, int userId) throws RemoteException {
@@ -5880,5 +5891,22 @@ class ActivityManagerProxy implements IActivityManager
         return res;
     }
 
+    @Override
+    public boolean setProcessMemoryTrimLevel(String process, int userId, int level)
+            throws RemoteException {
+        Parcel data = Parcel.obtain();
+        Parcel reply = Parcel.obtain();
+        data.writeInterfaceToken(IActivityManager.descriptor);
+        data.writeString(process);
+        data.writeInt(userId);
+        data.writeInt(level);
+        mRemote.transact(SET_PROCESS_MEMORY_TRIM_TRANSACTION, data, reply, 0);
+        reply.readException();
+        int res = reply.readInt();
+        data.recycle();
+        reply.recycle();
+        return res != 0;
+    }
+
     private IBinder mRemote;
 }