Home | History | Annotate | Download | only in app 
      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.app;
     18 
     19 /** {@hide} */
     20 oneway interface IUidObserver {
     21     // WARNING: when these transactions are updated, check if they are any callers on the native
     22     // side. If so, make sure they are using the correct transaction ids and arguments.
     23     // If a transaction which will also be used on the native side is being inserted, add it to
     24     // below block of transactions.
     25 
     26     // Since these transactions are also called from native code, these must be kept in sync with
     27     // the ones in frameworks/native/include/binder/IActivityManager.h
     28     // =============== Beginning of transactions used on native side as well ======================
     29 
     30     /**
     31      * Report that there are no longer any processes running for a uid.
     32      */
     33     void onUidGone(int uid, boolean disabled);
     34 
     35     /**
     36      * Report that a uid is now active (no longer idle).
     37      */
     38     void onUidActive(int uid);
     39 
     40     /**
     41      * Report that a uid is idle -- it has either been running in the background for
     42      * a sufficient period of time, or all of its processes have gone away.
     43      */
     44     void onUidIdle(int uid, boolean disabled);
     45 
     46     // =============== End of transactions used on native side as well ============================
     47 
     48     /**
     49      * General report of a state change of an uid.
     50      *
     51      * @param uid The uid for which the state change is being reported.
     52      * @param procState The updated process state for the uid.
     53      * @param procStateSeq The sequence no. associated with process state change of the uid,
     54      *                     see UidRecord.procStateSeq for details.
     55      */
     56     void onUidStateChanged(int uid, int procState, long procStateSeq);
     57 
     58     /**
     59      * Report when the cached state of a uid has changed.
     60      * If true, a uid has become cached -- that is, it has some active processes that are
     61      * all in the cached state.  It should be doing as little as possible at this point.
     62      * If false, that a uid is no longer cached.  This will only be called after
     63      * onUidCached() has been reported true.  It will happen when either one of its actively
     64      * running processes is no longer cached, or it no longer has any actively running processes.
     65      */
     66     void onUidCachedChanged(int uid, boolean cached);
     67 }
     68