1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.util.List;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Map;
import java.util.HashMap;
import java.io.Serializable;
/**
* A Dalvik process.
*/
class Proc implements Serializable {
private static final long serialVersionUID = 0;
/** Parent process. */
final Proc parent;
/** Process ID. */
final int id;
/**
* Name of this process. We may not have the correct name at first, i.e.
* some classes could have been loaded before the process name was set.
*/
String name;
/** Child processes. */
final List<Proc> children = new ArrayList<Proc>();
/** Maps thread ID to operation stack. */
transient final Map<Integer, LinkedList<Operation>> stacks
= new HashMap<Integer, LinkedList<Operation>>();
/** Number of operations. */
int operationCount;
/** Sequential list of operations that happened in this process. */
final List<Operation> operations = new ArrayList<Operation>();
/** List of past process names. */
final List<String> nameHistory = new ArrayList<String>();
/** Constructs a new process. */
Proc(Proc parent, int id) {
this.parent = parent;
this.id = id;
}
/** Sets name of this process. */
void setName(String name) {
if (!name.equals(this.name)) {
if (this.name != null) {
nameHistory.add(this.name);
}
this.name = name;
}
}
/**
* Returns true if this process comes from the zygote.
*/
public boolean fromZygote() {
return parent != null && parent.name.equals("zygote")
&& !name.equals("com.android.development");
}
/**
* Starts an operation.
*
* @param threadId thread the operation started in
* @param loadedClass class operation happened to
* @param time the operation started
*/
void startOperation(int threadId, LoadedClass loadedClass, long time,
Operation.Type type) {
Operation o = new Operation(
this, loadedClass, time, operationCount++, type);
operations.add(o);
LinkedList<Operation> stack = stacks.get(threadId);
if (stack == null) {
stack = new LinkedList<Operation>();
stacks.put(threadId, stack);
}
if (!stack.isEmpty()) {
stack.getLast().subops.add(o);
}
stack.add(o);
}
/**
* Ends an operation.
*
* @param threadId thread the operation ended in
* @param loadedClass class operation happened to
* @param time the operation ended
*/
Operation endOperation(int threadId, String className,
LoadedClass loadedClass, long time) {
LinkedList<Operation> stack = stacks.get(threadId);
if (stack == null || stack.isEmpty()) {
didNotStart(className);
return null;
}
Operation o = stack.getLast();
if (loadedClass != o.loadedClass) {
didNotStart(className);
return null;
}
stack.removeLast();
o.endTimeNanos = time;
return o;
}
/**
* Prints an error indicating that we saw the end of an operation but not
* the start. A bug in the logging framework which results in dropped logs
* causes this.
*/
private static void didNotStart(String name) {
System.err.println("Warning: An operation ended on " + name
+ " but it never started!");
}
/**
* Prints this process tree to stdout.
*/
void print() {
print("");
}
/**
* Prints a child proc to standard out.
*/
private void print(String prefix) {
System.out.println(prefix + "id=" + id + ", name=" + name);
for (Proc child : children) {
child.print(prefix + " ");
}
}
@Override
public String toString() {
return this.name;
}
}
|
