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      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     /**
     22      * General report of a state change of an uid.
     23      *
     24      * @param uid The uid for which the state change is being reported.
     25      * @param procState The updated process state for the uid.
     26      * @param procStateSeq The sequence no. associated with process state change of the uid,
     27      *                     see UidRecord.procStateSeq for details.
     28      */
     29     void onUidStateChanged(int uid, int procState, long procStateSeq);
     30 
     31     /**
     32      * Report that there are no longer any processes running for a uid.
     33      */
     34     void onUidGone(int uid, boolean disabled);
     35 
     36     /**
     37      * Report that a uid is now active (no longer idle).
     38      */
     39     void onUidActive(int uid);
     40 
     41     /**
     42      * Report that a uid is idle -- it has either been running in the background for
     43      * a sufficient period of time, or all of its processes have gone away.
     44      */
     45     void onUidIdle(int uid, boolean disabled);
     46 
     47     /**
     48      * Report when the cached state of a uid has changed.
     49      * If true, a uid has become cached -- that is, it has some active processes that are
     50      * all in the cached state.  It should be doing as little as possible at this point.
     51      * If false, that a uid is no longer cached.  This will only be called after
     52      * onUidCached() has been reported true.  It will happen when either one of its actively
     53      * running processes is no longer cached, or it no longer has any actively running processes.
     54      */
     55     void onUidCachedChanged(int uid, boolean cached);
     56 }
     57