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1
28
29
30 package com.caucho.tools.profiler;
31
32 import java.util.Collection  ;
33 import java.util.Collections ;
34 import java.util.IdentityHashMap ;
35 import java.util.Map ;
36
37
42 public class ProfilerPoint
43 implements Comparable <ProfilerPoint>
44 {
45 private static final Profiler NOOP_PROFILER = new Profiler() {
46 public void finish()
47 {
48 }
49
50 public String toString()
51 {
52 return "NoopProfiler[]";
53 }
54 };
55
56 private final ProfilerManager _profilerManager;
57 private final String _name;
58
59 private long _longHashCode;
60
61 private Map <ProfilerNode, ProfilerNode> _childProfilerNodesMap;
62
63 ProfilerPoint(ProfilerManager profilerManager, String name)
64 {
65 assert profilerManager != null;
66 assert name != null;
67
68 _profilerManager = profilerManager;
69 _name = name;
70 }
71
72 protected ProfilerManager getProfilerManager()
73 {
74 return _profilerManager;
75 }
76
77 public String getName()
78 {
79 return _name;
80 }
81
82 public ProfilerPoint createProfilerPoint(String name)
83 {
84 return getProfilerManager().getProfilerPoint(name);
85 }
86
87 public Profiler start()
88 {
89 if (!_profilerManager.isEnabled())
90 return NOOP_PROFILER;
91
92 ThreadProfiler profiler = ThreadProfiler.current();
93
94 profiler.start(this);
95
96 return profiler;
97 }
98
99 protected Profiler start(ProfilerPoint parent)
100 {
101 if (!getProfilerManager().isEnabled())
102 return NOOP_PROFILER;
103
104 ThreadProfiler profiler = ThreadProfiler.current();
105
106 profiler.start(parent, this);
107
108 return profiler;
109 }
110
111
115 Collection <ProfilerNode> getProfilerNodes()
116 {
117 if (_childProfilerNodesMap == null)
118 return Collections.emptyList();
119 else
120 return _childProfilerNodesMap.values();
121 }
122
123 ProfilerNode getProfilerNode(ProfilerNode parentNode)
124 {
125 synchronized (this) {
126 ProfilerNode node;
127
128 if (_childProfilerNodesMap == null) {
129 _childProfilerNodesMap = new IdentityHashMap <ProfilerNode, ProfilerNode>();
130 node = null;
131 }
132 else
133 node = _childProfilerNodesMap.get(parentNode);
134
135 if (node == null) {
136 node = new ProfilerNode(parentNode, this);
137
138 _childProfilerNodesMap.put(parentNode, node);
139 }
140
141 return node;
142 }
143 }
144
145
148 void reset()
149 {
150 synchronized (this) {
151 if (_childProfilerNodesMap != null)
152 _childProfilerNodesMap.clear();
153 }
154 }
155
156 public boolean equals(Object o)
157 {
158 if (o == this)
159 return true;
160
161 if (o == null)
162 return false;
163
164 if (!(o instanceof ProfilerPoint))
165 return false;
166
167 final ProfilerPoint other = (ProfilerPoint) o;
168
169 if (longHashCode() != other.longHashCode())
170 return false;
171
172 return getName().equals(other.getName());
173 }
174
175 public int compareTo(ProfilerPoint other)
176 {
177 return getName().compareTo(other.getName());
178 }
179
180 public long longHashCode()
181 {
182 if (_longHashCode == 0) {
183 long longHashCode = 7;
184
185 final int len = _name.length();
186
187 for (int i = 0; i < len; i++)
188 longHashCode = longHashCode * 33 ^ _name.charAt(i);
189
190 _longHashCode = longHashCode;
191 }
192
193 return _longHashCode;
194 }
195
196 public int hashCode()
197 {
198 return (int) longHashCode();
199 }
200
201 public String toString()
202 {
203 return "ProfilerPoint[" + getName() + "]";
204 }
205 }
206 |
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