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1 // Copyright 2009 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 | |
29 // Initlialize namespaces | |
30 var devtools = devtools || {}; | |
31 devtools.profiler = devtools.profiler || {}; | |
32 | |
33 | |
34 /** | |
35 * Creates a Profile View builder object. | |
36 * | |
37 * @param {number} samplingRate Number of ms between profiler ticks. | |
38 * @constructor | |
39 */ | |
40 devtools.profiler.ViewBuilder = function(samplingRate) { | |
41 this.samplingRate = samplingRate; | |
42 }; | |
43 | |
44 | |
45 /** | |
46 * Builds a profile view for the specified call tree. | |
47 * | |
48 * @param {devtools.profiler.CallTree} callTree A call tree. | |
49 * @param {boolean} opt_bottomUpViewWeights Whether remapping | |
50 * of self weights for a bottom up view is needed. | |
51 */ | |
52 devtools.profiler.ViewBuilder.prototype.buildView = function( | |
53 callTree, opt_bottomUpViewWeights) { | |
54 var head; | |
55 var samplingRate = this.samplingRate; | |
56 var createViewNode = this.createViewNode; | |
57 callTree.traverse(function(node, viewParent) { | |
58 var totalWeight = node.totalWeight * samplingRate; | |
59 var selfWeight = node.selfWeight * samplingRate; | |
60 if (opt_bottomUpViewWeights === true) { | |
61 if (viewParent === head) { | |
62 selfWeight = totalWeight; | |
63 } else { | |
64 selfWeight = 0; | |
65 } | |
66 } | |
67 var viewNode = createViewNode(node.label, totalWeight, selfWeight, head); | |
68 if (viewParent) { | |
69 viewParent.addChild(viewNode); | |
70 } else { | |
71 head = viewNode; | |
72 } | |
73 return viewNode; | |
74 }); | |
75 var view = this.createView(head); | |
76 return view; | |
77 }; | |
78 | |
79 | |
80 /** | |
81 * Factory method for a profile view. | |
82 * | |
83 * @param {devtools.profiler.ProfileView.Node} head View head node. | |
84 * @return {devtools.profiler.ProfileView} Profile view. | |
85 */ | |
86 devtools.profiler.ViewBuilder.prototype.createView = function(head) { | |
87 return new devtools.profiler.ProfileView(head); | |
88 }; | |
89 | |
90 | |
91 /** | |
92 * Factory method for a profile view node. | |
93 * | |
94 * @param {string} internalFuncName A fully qualified function name. | |
95 * @param {number} totalTime Amount of time that application spent in the | |
96 * corresponding function and its descendants (not that depending on | |
97 * profile they can be either callees or callers.) | |
98 * @param {number} selfTime Amount of time that application spent in the | |
99 * corresponding function only. | |
100 * @param {devtools.profiler.ProfileView.Node} head Profile view head. | |
101 * @return {devtools.profiler.ProfileView.Node} Profile view node. | |
102 */ | |
103 devtools.profiler.ViewBuilder.prototype.createViewNode = function( | |
104 funcName, totalTime, selfTime, head) { | |
105 return new devtools.profiler.ProfileView.Node( | |
106 funcName, totalTime, selfTime, head); | |
107 }; | |
108 | |
109 | |
110 /** | |
111 * Creates a Profile View object. It allows to perform sorting | |
112 * and filtering actions on the profile. | |
113 * | |
114 * @param {devtools.profiler.ProfileView.Node} head Head (root) node. | |
115 * @constructor | |
116 */ | |
117 devtools.profiler.ProfileView = function(head) { | |
118 this.head = head; | |
119 }; | |
120 | |
121 | |
122 /** | |
123 * Sorts the profile view using the specified sort function. | |
124 * | |
125 * @param {function(devtools.profiler.ProfileView.Node, | |
126 * devtools.profiler.ProfileView.Node):number} sortFunc A sorting | |
127 * functions. Must comply with Array.sort sorting function requirements. | |
128 */ | |
129 devtools.profiler.ProfileView.prototype.sort = function(sortFunc) { | |
130 this.traverse(function (node) { | |
131 node.sortChildren(sortFunc); | |
132 }); | |
133 }; | |
134 | |
135 | |
136 /** | |
137 * Traverses profile view nodes in preorder. | |
138 * | |
139 * @param {function(devtools.profiler.ProfileView.Node)} f Visitor function. | |
140 */ | |
141 devtools.profiler.ProfileView.prototype.traverse = function(f) { | |
142 var nodesToTraverse = new ConsArray(); | |
143 nodesToTraverse.concat([this.head]); | |
144 while (!nodesToTraverse.atEnd()) { | |
145 var node = nodesToTraverse.next(); | |
146 f(node); | |
147 nodesToTraverse.concat(node.children); | |
148 } | |
149 }; | |
150 | |
151 | |
152 /** | |
153 * Constructs a Profile View node object. Each node object corresponds to | |
154 * a function call. | |
155 * | |
156 * @param {string} internalFuncName A fully qualified function name. | |
157 * @param {number} totalTime Amount of time that application spent in the | |
158 * corresponding function and its descendants (not that depending on | |
159 * profile they can be either callees or callers.) | |
160 * @param {number} selfTime Amount of time that application spent in the | |
161 * corresponding function only. | |
162 * @param {devtools.profiler.ProfileView.Node} head Profile view head. | |
163 * @constructor | |
164 */ | |
165 devtools.profiler.ProfileView.Node = function( | |
166 internalFuncName, totalTime, selfTime, head) { | |
167 this.internalFuncName = internalFuncName; | |
168 this.totalTime = totalTime; | |
169 this.selfTime = selfTime; | |
170 this.head = head; | |
171 this.parent = null; | |
172 this.children = []; | |
173 }; | |
174 | |
175 | |
176 /** | |
177 * Returns a share of the function's total time in application's total time. | |
178 */ | |
179 devtools.profiler.ProfileView.Node.prototype.__defineGetter__( | |
180 'totalPercent', | |
181 function() { return this.totalTime / | |
182 (this.head ? this.head.totalTime : this.totalTime) * 100.0; }); | |
183 | |
184 | |
185 /** | |
186 * Returns a share of the function's self time in application's total time. | |
187 */ | |
188 devtools.profiler.ProfileView.Node.prototype.__defineGetter__( | |
189 'selfPercent', | |
190 function() { return this.selfTime / | |
191 (this.head ? this.head.totalTime : this.totalTime) * 100.0; }); | |
192 | |
193 | |
194 /** | |
195 * Returns a share of the function's total time in its parent's total time. | |
196 */ | |
197 devtools.profiler.ProfileView.Node.prototype.__defineGetter__( | |
198 'parentTotalPercent', | |
199 function() { return this.totalTime / | |
200 (this.parent ? this.parent.totalTime : this.totalTime) * 100.0; }); | |
201 | |
202 | |
203 /** | |
204 * Adds a child to the node. | |
205 * | |
206 * @param {devtools.profiler.ProfileView.Node} node Child node. | |
207 */ | |
208 devtools.profiler.ProfileView.Node.prototype.addChild = function(node) { | |
209 node.parent = this; | |
210 this.children.push(node); | |
211 }; | |
212 | |
213 | |
214 /** | |
215 * Sorts all the node's children recursively. | |
216 * | |
217 * @param {function(devtools.profiler.ProfileView.Node, | |
218 * devtools.profiler.ProfileView.Node):number} sortFunc A sorting | |
219 * functions. Must comply with Array.sort sorting function requirements. | |
220 */ | |
221 devtools.profiler.ProfileView.Node.prototype.sortChildren = function( | |
222 sortFunc) { | |
223 this.children.sort(sortFunc); | |
224 }; | |
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