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
17package android.app;
18
19/** {@hide} */
20oneway 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