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Commit 83249ec4 authored by Dianne Hackborn's avatar Dianne Hackborn
Browse files

Add API to get a uid's current importance. 

This is kind-of useful to go along with monitoring
uid importance changes.

Test: none yet

Change-Id: Ic0f8418955d17ea21d06f49dcd9641bc5f32387b
parent 4a306894

api/system-current.txt

+1 −0
Original line number Diff line number Diff line
@@ -3980,6 +3980,7 @@ package android.app { 
    method public android.app.PendingIntent getRunningServiceControlPanel(android.content.ComponentName) throws java.lang.SecurityException;

    method public java.util.List<android.app.ActivityManager.RunningServiceInfo> getRunningServices(int) throws java.lang.SecurityException;

    method public deprecated java.util.List<android.app.ActivityManager.RunningTaskInfo> getRunningTasks(int) throws java.lang.SecurityException;

    method public int getUidImportance(int);

    method public deprecated boolean isInLockTaskMode();

    method public boolean isLowRamDevice();

    method public static boolean isRunningInTestHarness();

api/test-current.txt

+1 −0
Original line number Diff line number Diff line
@@ -3848,6 +3848,7 @@ package android.app { 
    method public android.app.PendingIntent getRunningServiceControlPanel(android.content.ComponentName) throws java.lang.SecurityException;

    method public java.util.List<android.app.ActivityManager.RunningServiceInfo> getRunningServices(int) throws java.lang.SecurityException;

    method public deprecated java.util.List<android.app.ActivityManager.RunningTaskInfo> getRunningTasks(int) throws java.lang.SecurityException;

    method public int getUidImportance(int);

    method public deprecated boolean isInLockTaskMode();

    method public boolean isLowRamDevice();

    method public static boolean isRunningInTestHarness();

core/java/android/app/ActivityManager.java

+20 −0
Original line number Diff line number Diff line
@@ -3346,6 +3346,26 @@ public class ActivityManager { 
        }

    }



    /**

     * Return the importance of a given uid, based on the processes that are

     * currently running.  The return value is one of the importance constants defined

     * in {@link RunningAppProcessInfo}, giving you the highest importance of all the

     * processes that this uid has running.  If there are no processes

     * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned.

     * @hide

     */

    @SystemApi @TestApi

    @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS)

    public int getUidImportance(int uid) {

        try {

            int procState = getService().getUidProcessState(uid,

                    mContext.getOpPackageName());

            return RunningAppProcessInfo.procStateToImportance(procState);

        } catch (RemoteException e) {

            throw e.rethrowFromSystemServer();

        }

    }



    /**

     * Callback to get reports about changes to the importance of a uid.  Use with

     * {@link #addOnUidImportanceListener}.

core/java/android/app/IActivityManager.aidl

+1 −0
Original line number Diff line number Diff line
@@ -463,6 +463,7 @@ interface IActivityManager { 
     *              etc.

     */

    void keyguardGoingAway(int flags);

    int getUidProcessState(int uid, in String callingPackage);

    void registerUidObserver(in IUidObserver observer, int which, int cutpoint,

            String callingPackage);

    void unregisterUidObserver(in IUidObserver observer);

services/core/java/com/android/server/am/ActivityManagerService.java

+13 −0
Original line number Diff line number Diff line
@@ -13024,6 +13024,19 @@ public class ActivityManagerService extends IActivityManager.Stub 
        }

    }













    @Override













    public int getUidProcessState(int uid, String callingPackage) {













        if (!hasUsageStatsPermission(callingPackage)) {













            enforceCallingPermission(android.Manifest.permission.PACKAGE_USAGE_STATS,













                    "getUidProcessState");













        }

























        synchronized (this) {













            UidRecord uidRec = mActiveUids.get(uid);













            return uidRec != null ? uidRec.curProcState : ActivityManager.PROCESS_STATE_NONEXISTENT;













        }













    }



























    @Override















    public void registerUidObserver(IUidObserver observer, int which, int cutpoint,















            String callingPackage) {