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
17package com.android.server.am;
18
19import android.os.Binder;
20import android.os.SystemClock;
21import android.util.TimeUtils;
22
23/**
24 * Represents a link between a content provider and client.
25 */
26public final class ContentProviderConnection extends Binder {
27    public final ContentProviderRecord provider;
28    public final ProcessRecord client;
29    public final long createTime;
30    public int stableCount;
31    public int unstableCount;
32    // The client of this connection is currently waiting for the provider to appear.
33    // Protected by the provider lock.
34    public boolean waiting;
35    // The provider of this connection is now dead.
36    public boolean dead;
37
38    // For debugging.
39    public int numStableIncs;
40    public int numUnstableIncs;
41
42    public ContentProviderConnection(ContentProviderRecord _provider, ProcessRecord _client) {
43        provider = _provider;
44        client = _client;
45        createTime = SystemClock.elapsedRealtime();
46    }
47
48    public String toString() {
49        StringBuilder sb = new StringBuilder(128);
50        sb.append("ContentProviderConnection{");
51        toShortString(sb);
52        sb.append('}');
53        return sb.toString();
54    }
55
56    public String toShortString() {
57        StringBuilder sb = new StringBuilder(128);
58        toShortString(sb);
59        return sb.toString();
60    }
61
62    public String toClientString() {
63        StringBuilder sb = new StringBuilder(128);
64        toClientString(sb);
65        return sb.toString();
66    }
67
68    public void toShortString(StringBuilder sb) {
69        sb.append(provider.toShortString());
70        sb.append("->");
71        toClientString(sb);
72    }
73
74    public void toClientString(StringBuilder sb) {
75        sb.append(client.toShortString());
76        sb.append(" s");
77        sb.append(stableCount);
78        sb.append("/");
79        sb.append(numStableIncs);
80        sb.append(" u");
81        sb.append(unstableCount);
82        sb.append("/");
83        sb.append(numUnstableIncs);
84        if (waiting) {
85            sb.append(" WAITING");
86        }
87        if (dead) {
88            sb.append(" DEAD");
89        }
90        long nowReal = SystemClock.elapsedRealtime();
91        sb.append(" ");
92        TimeUtils.formatDuration(nowReal-createTime, sb);
93    }
94}
95