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
17package com.android.server.am;
18
19import android.content.IIntentReceiver;
20import android.os.Binder;
21import android.os.IBinder;
22import android.util.PrintWriterPrinter;
23import android.util.Printer;
24
25import java.io.PrintWriter;
26import java.util.ArrayList;
27
28/**
29 * A receiver object that has registered for one or more broadcasts.
30 * The ArrayList holds BroadcastFilter objects.
31 */
32final 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