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      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 
     17 package com.android.server.am;
     18 
     19 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_MU;
     20 import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
     21 import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;
     22 
     23 import android.app.IStopUserCallback;
     24 import android.os.UserHandle;
     25 import android.util.ArrayMap;
     26 import android.util.Slog;
     27 
     28 import com.android.internal.util.ProgressReporter;
     29 
     30 import java.io.PrintWriter;
     31 import java.util.ArrayList;
     32 
     33 public 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