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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.os.Binder;
     21 import android.os.IBinder;
     22 import android.util.PrintWriterPrinter;
     23 import android.util.Printer;
     24 
     25 import java.io.PrintWriter;
     26 import java.util.ArrayList;
     27 
     28 /**
     29  * A receiver object that has registered for one or more broadcasts.
     30  * The ArrayList holds BroadcastFilter objects.
     31  */
     32 final class ReceiverList extends ArrayList<BroadcastFilter>
     33         implements IBinder.DeathRecipient {
     34     final ActivityManagerService owner;
     35     public final IIntentReceiver receiver;
     36     public final ProcessRecord app;
     37     public final int pid;
     38     public final int uid;
     39     public final int userId;
     40     BroadcastRecord curBroadcast = null;
     41     boolean linkedToDeath = false;
     42 
     43     String stringName;
     44 
     45     ReceiverList(ActivityManagerService _owner, ProcessRecord _app,
     46             int _pid, int _uid, int _userId, IIntentReceiver _receiver) {
     47         owner = _owner;
     48         receiver = _receiver;
     49         app = _app;
     50         pid = _pid;
     51         uid = _uid;
     52         userId = _userId;
     53     }
     54 
     55     // Want object identity, not the array identity we are inheriting.
     56     public boolean equals(Object o) {
     57         return this == o;
     58     }
     59     public int hashCode() {
     60         return System.identityHashCode(this);
     61     }
     62 
     63     public void binderDied() {
     64         linkedToDeath = false;
     65         owner.unregisterReceiver(receiver);
     66     }
     67 
     68     void dumpLocal(PrintWriter pw, String prefix) {
     69         pw.print(prefix); pw.print("app="); pw.print(app != null ? app.toShortString() : null);
     70             pw.print(" pid="); pw.print(pid); pw.print(" uid="); pw.print(uid);
     71             pw.print(" user="); pw.println(userId);
     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("/u");
    107         sb.append(userId);
    108         sb.append((receiver.asBinder() instanceof Binder) ? " local:" : " remote:");
    109         sb.append(Integer.toHexString(System.identityHashCode(receiver.asBinder())));
    110         sb.append('}');
    111         return stringName = sb.toString();
    112     }
    113 }
    114