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      1 /*
      2  * Copyright (C) 2006 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 android.content.IIntentReceiver;
     20 import android.content.Intent;
     21 import android.os.Binder;
     22 import android.os.Bundle;
     23 import android.os.IBinder;
     24 import android.os.RemoteException;
     25 import android.util.PrintWriterPrinter;
     26 import android.util.Printer;
     27 
     28 import java.io.PrintWriter;
     29 import java.util.ArrayList;
     30 
     31 /**
     32  * A receiver object that has registered for one or more broadcasts.
     33  * The ArrayList holds BroadcastFilter objects.
     34  */
     35 class ReceiverList extends ArrayList<BroadcastFilter>
     36         implements IBinder.DeathRecipient {
     37     final ActivityManagerService owner;
     38     public final IIntentReceiver receiver;
     39     public final ProcessRecord app;
     40     public final int pid;
     41     public final int uid;
     42     BroadcastRecord curBroadcast = null;
     43     boolean linkedToDeath = false;
     44 
     45     String stringName;
     46 
     47     ReceiverList(ActivityManagerService _owner, ProcessRecord _app,
     48             int _pid, int _uid, IIntentReceiver _receiver) {
     49         owner = _owner;
     50         receiver = _receiver;
     51         app = _app;
     52         pid = _pid;
     53         uid = _uid;
     54     }
     55 
     56     // Want object identity, not the array identity we are inheriting.
     57     public boolean equals(Object o) {
     58         return this == o;
     59     }
     60     public int hashCode() {
     61         return System.identityHashCode(this);
     62     }
     63 
     64     public void binderDied() {
     65         linkedToDeath = false;
     66         owner.unregisterReceiver(receiver);
     67     }
     68 
     69     void dumpLocal(PrintWriter pw, String prefix) {
     70         pw.print(prefix); pw.print("app="); pw.print(app);
     71             pw.print(" pid="); pw.print(pid); pw.print(" uid="); pw.println(uid);
     72         if (curBroadcast != null || linkedToDeath) {
     73             pw.print(prefix); pw.print("curBroadcast="); pw.print(curBroadcast);
     74                 pw.print(" linkedToDeath="); pw.println(linkedToDeath);
     75         }
     76     }
     77 
     78     void dump(PrintWriter pw, String prefix) {
     79         Printer pr = new PrintWriterPrinter(pw);
     80         dumpLocal(pw, prefix);
     81         String p2 = prefix + "  ";
     82         final int N = size();
     83         for (int i=0; i<N; i++) {
     84             BroadcastFilter bf = get(i);
     85             pw.print(prefix); pw.print("Filter #"); pw.print(i);
     86                     pw.print(": BroadcastFilter{");
     87                     pw.print(Integer.toHexString(System.identityHashCode(bf)));
     88                     pw.println('}');
     89             bf.dumpInReceiverList(pw, pr, p2);
     90         }
     91     }
     92 
     93     public String toString() {
     94         if (stringName != null) {
     95             return stringName;
     96         }
     97         StringBuilder sb = new StringBuilder(128);
     98         sb.append("ReceiverList{");
     99         sb.append(Integer.toHexString(System.identityHashCode(this)));
    100         sb.append(' ');
    101         sb.append(pid);
    102         sb.append(' ');
    103         sb.append((app != null ? app.processName : "(unknown name)"));
    104         sb.append('/');
    105         sb.append(uid);
    106         sb.append((receiver.asBinder() instanceof Binder) ? " local:" : " remote:");
    107         sb.append(Integer.toHexString(System.identityHashCode(receiver.asBinder())));
    108         sb.append('}');
    109         return stringName = sb.toString();
    110     }
    111 }
    112