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.Context;
20 import android.content.Intent;
21 import android.os.IBinder;
22 import android.util.ArrayMap;
23 import android.util.ArraySet;
24 import android.util.proto.ProtoOutputStream;
25 
26 import java.io.PrintWriter;
27 
28 /**
29  * A particular Intent that has been bound to a Service.
30  */
31 final class IntentBindRecord {
32     /** The running service. */
33     final ServiceRecord service;
34     /** The intent that is bound.*/
35     final Intent.FilterComparison intent; //
36     /** All apps that have bound to this Intent. */
37     final ArrayMap<ProcessRecord, AppBindRecord> apps
38             = new ArrayMap<ProcessRecord, AppBindRecord>();
39     /** Binder published from service. */
40     IBinder binder;
41     /** Set when we have initiated a request for this binder. */
42     boolean requested;
43     /** Set when we have received the requested binder. */
44     boolean received;
45     /** Set when we still need to tell the service all clients are unbound. */
46     boolean hasBound;
47     /** Set when the service's onUnbind() has asked to be told about new clients. */
48     boolean doRebind;
49 
50     String stringName;      // caching of toString
51 
dump(PrintWriter pw, String prefix)52     void dump(PrintWriter pw, String prefix) {
53         pw.print(prefix); pw.print("service="); pw.println(service);
54         dumpInService(pw, prefix);
55     }
56 
dumpInService(PrintWriter pw, String prefix)57     void dumpInService(PrintWriter pw, String prefix) {
58         pw.print(prefix); pw.print("intent={");
59                 pw.print(intent.getIntent().toShortString(false, true, false, false));
60                 pw.println('}');
61         pw.print(prefix); pw.print("binder="); pw.println(binder);
62         pw.print(prefix); pw.print("requested="); pw.print(requested);
63                 pw.print(" received="); pw.print(received);
64                 pw.print(" hasBound="); pw.print(hasBound);
65                 pw.print(" doRebind="); pw.println(doRebind);
66         for (int i=0; i<apps.size(); i++) {
67             AppBindRecord a = apps.valueAt(i);
68             pw.print(prefix); pw.print("* Client AppBindRecord{");
69                     pw.print(Integer.toHexString(System.identityHashCode(a)));
70                     pw.print(' '); pw.print(a.client); pw.println('}');
71             a.dumpInIntentBind(pw, prefix + "  ");
72         }
73     }
74 
IntentBindRecord(ServiceRecord _service, Intent.FilterComparison _intent)75     IntentBindRecord(ServiceRecord _service, Intent.FilterComparison _intent) {
76         service = _service;
77         intent = _intent;
78     }
79 
collectFlags()80     int collectFlags() {
81         int flags = 0;
82         for (int i=apps.size()-1; i>=0; i--) {
83             final ArraySet<ConnectionRecord> connections = apps.valueAt(i).connections;
84             for (int j=connections.size()-1; j>=0; j--) {
85                 flags |= connections.valueAt(j).flags;
86             }
87         }
88         return flags;
89     }
90 
toString()91     public String toString() {
92         if (stringName != null) {
93             return stringName;
94         }
95         StringBuilder sb = new StringBuilder(128);
96         sb.append("IntentBindRecord{");
97         sb.append(Integer.toHexString(System.identityHashCode(this)));
98         sb.append(' ');
99         if ((collectFlags()&Context.BIND_AUTO_CREATE) != 0) {
100             sb.append("CR ");
101         }
102         sb.append(service.shortInstanceName);
103         sb.append(':');
104         if (intent != null) {
105             intent.getIntent().toShortString(sb, false, false, false, false);
106         }
107         sb.append('}');
108         return stringName = sb.toString();
109     }
110 
writeToProto(ProtoOutputStream proto, long fieldId)111     public void writeToProto(ProtoOutputStream proto, long fieldId) {
112         long token = proto.start(fieldId);
113         if (intent != null) {
114             intent.getIntent().writeToProto(proto,
115                     IntentBindRecordProto.INTENT, false, true, false, false);
116         }
117         if (binder != null) {
118             proto.write(IntentBindRecordProto.BINDER, binder.toString());
119         }
120         proto.write(IntentBindRecordProto.AUTO_CREATE,
121                 (collectFlags()&Context.BIND_AUTO_CREATE) != 0);
122         proto.write(IntentBindRecordProto.REQUESTED, requested);
123         proto.write(IntentBindRecordProto.RECEIVED, received);
124         proto.write(IntentBindRecordProto.HAS_BOUND, hasBound);
125         proto.write(IntentBindRecordProto.DO_REBIND, doRebind);
126 
127         final int N = apps.size();
128         for (int i=0; i<N; i++) {
129             AppBindRecord a = apps.valueAt(i);
130             if (a != null) {
131                 a.writeToProto(proto, IntentBindRecordProto.APPS);
132             }
133         }
134         proto.end(token);
135     }
136 }
137