UserState.java revision c94c2493717264641bdfd205fd1f023193caa535 
1/*
2 * Copyright (C) 2012 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 com.android.server.am;
18
19import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_MU;
20import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
21import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;
22
23import android.app.IStopUserCallback;
24import android.os.UserHandle;
25import android.util.ArrayMap;
26import android.util.Slog;
27
28import com.android.internal.util.ProgressReporter;
29
30import java.io.PrintWriter;
31import java.util.ArrayList;
32
33public final class UserState {
34    private static final String TAG = TAG_WITH_CLASS_NAME ? "UserState" : TAG_AM;
35
36    // User is first coming up.
37    public final static int STATE_BOOTING = 0;
38    // User is in the locked state.
39    public final static int STATE_RUNNING_LOCKED = 1;
40    // User is in the unlocking state.
41    public final static int STATE_RUNNING_UNLOCKING = 2;
42    // User is in the running state.
43    public final static int STATE_RUNNING_UNLOCKED = 3;
44    // User is in the initial process of being stopped.
45    public final static int STATE_STOPPING = 4;
46    // User is in the final phase of stopping, sending Intent.ACTION_SHUTDOWN.
47    public final static int STATE_SHUTDOWN = 5;
48
49    public final UserHandle mHandle;
50    public final ArrayList<IStopUserCallback> mStopCallbacks
51            = new ArrayList<IStopUserCallback>();
52    public final ProgressReporter mUnlockProgress;
53
54    public int state = STATE_BOOTING;
55    public int lastState = STATE_BOOTING;
56    public boolean switching;
57
58    /**
59     * The last time that a provider was reported to usage stats as being brought to important
60     * foreground procstate.
61     */
62    public final ArrayMap<String,Long> mProviderLastReportedFg = new ArrayMap<>();
63
64    public UserState(UserHandle handle) {
65        mHandle = handle;
66        mUnlockProgress = new ProgressReporter(handle.getIdentifier());
67    }
68
69    public boolean setState(int oldState, int newState) {
70        if (state == oldState) {
71            setState(newState);
72            return true;
73        } else {
74            Slog.w(TAG, "Expected user " + mHandle.getIdentifier() + " in state "
75                    + stateToString(oldState) + " but was in state " + stateToString(state));
76            return false;
77        }
78    }
79
80    public void setState(int newState) {
81        if (DEBUG_MU) {
82            Slog.i(TAG, "User " + mHandle.getIdentifier() + " state changed from "
83                    + stateToString(state) + " to " + stateToString(newState));
84        }
85        lastState = state;
86        state = newState;
87    }
88
89    private static String stateToString(int state) {
90        switch (state) {
91            case STATE_BOOTING: return "BOOTING";
92            case STATE_RUNNING_LOCKED: return "RUNNING_LOCKED";
93            case STATE_RUNNING_UNLOCKING: return "RUNNING_UNLOCKING";
94            case STATE_RUNNING_UNLOCKED: return "RUNNING_UNLOCKED";
95            case STATE_STOPPING: return "STOPPING";
96            case STATE_SHUTDOWN: return "SHUTDOWN";
97            default: return Integer.toString(state);
98        }
99    }
100
101    void dump(String prefix, PrintWriter pw) {
102        pw.print(prefix);
103        pw.print("state="); pw.print(stateToString(state));
104        if (switching) pw.print(" SWITCHING");
105        pw.println();
106    }
107}
108