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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
'use strict';
/**
* @fileoverview Provides the Cpu class.
*/
base.require('base.range');
base.require('tracing.trace_model.slice');
base.require('tracing.trace_model.counter');
base.exportTo('tracing.trace_model', function() {
var Counter = tracing.trace_model.Counter;
var Slice = tracing.trace_model.Slice;
/**
* A CpuSlice represents an slice of time on a CPU.
*
* @constructor
*/
function CpuSlice(cat, title, colorId, start, args, opt_duration) {
Slice.apply(this, arguments);
this.threadThatWasRunning = undefined;
this.cpu = undefined;
}
CpuSlice.prototype = {
__proto__: Slice.prototype,
get analysisTypeName() {
return 'tracing.analysis.CpuSlice';
},
toJSON: function() {
var obj = new Object();
var keys = Object.keys(this);
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (typeof this[key] == 'function')
continue;
if (key == 'cpu' || key == 'threadThatWasRunning') {
if (this[key])
obj[key] = this[key].guid;
continue;
}
obj[key] = this[key];
}
return obj;
},
getAssociatedTimeslice: function() {
if (!this.threadThatWasRunning)
return undefined;
var timeSlices = this.threadThatWasRunning.timeSlices;
for (var i = 0; i < timeSlices.length; i++) {
var timeSlice = timeSlices[i];
if (timeSlice.start !== this.start)
continue;
if (timeSlice.duration !== this.duration)
continue;
return timeSlice;
}
return undefined;
}
};
/**
* A ThreadTimeSlice is a slice of time on a specific thread where that thread
* was running on a specific CPU, or in a specific sleep state.
*
* As a thread switches moves through its life, it sometimes goes to sleep and
* can't run. Other times, its runnable but isn't actually assigned to a CPU.
* Finally, sometimes it gets put on a CPU to actually execute. Each of these
* states is represented by a ThreadTimeSlice:
*
* Sleeping or runnable: cpuOnWhichThreadWasRunning is undefined
* Running: cpuOnWhichThreadWasRunning is set.
*
* @constructor
*/
function ThreadTimeSlice(
thread, cat, title, colorId, start, args, opt_duration) {
Slice.call(this, cat, title, colorId, start, args, opt_duration);
this.thread = thread;
this.cpuOnWhichThreadWasRunning = undefined;
}
ThreadTimeSlice.prototype = {
__proto__: Slice.prototype,
get analysisTypeName() {
return 'tracing.analysis.ThreadTimeSlice';
},
toJSON: function() {
var obj = new Object();
var keys = Object.keys(this);
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (typeof this[key] == 'function')
continue;
if (key == 'thread' || key == 'cpuOnWhichThreadWasRunning') {
if (this[key])
obj[key] = this[key].guid;
continue;
}
obj[key] = this[key];
}
return obj;
},
getAssociatedCpuSlice: function() {
if (!this.cpuOnWhichThreadWasRunning)
return undefined;
var cpuSlices = this.cpuOnWhichThreadWasRunning.slices;
for (var i = 0; i < cpuSlices.length; i++) {
var cpuSlice = cpuSlices[i];
if (cpuSlice.start !== this.start)
continue;
if (cpuSlice.duration !== this.duration)
continue;
return cpuSlice;
}
return undefined;
},
getCpuSliceThatTookCpu: function() {
if (this.cpuOnWhichThreadWasRunning)
return undefined;
var curIndex = this.thread.indexOfTimeSlice(this);
var cpuSliceWhenLastRunning;
while (curIndex >= 0) {
var curSlice = this.thread.timeSlices[curIndex];
if (!curSlice.cpuOnWhichThreadWasRunning) {
curIndex--;
continue;
}
cpuSliceWhenLastRunning = curSlice.getAssociatedCpuSlice();
break;
}
if (!cpuSliceWhenLastRunning)
return undefined;
var cpu = cpuSliceWhenLastRunning.cpu;
var indexOfSliceOnCpuWhenLastRunning =
cpu.indexOf(cpuSliceWhenLastRunning);
var nextRunningSlice = cpu.slices[indexOfSliceOnCpuWhenLastRunning + 1];
if (!nextRunningSlice)
return undefined;
if (Math.abs(nextRunningSlice.start - cpuSliceWhenLastRunning.end) <
0.00001)
return nextRunningSlice;
return undefined;
}
};
/**
* The Cpu represents a Cpu from the kernel's point of view.
* @constructor
*/
function Cpu(number) {
this.cpuNumber = number;
this.slices = [];
this.counters = {};
this.bounds = new base.Range();
};
Cpu.prototype = {
/**
* @return {TimlineCounter} The counter on this process named 'name',
* creating it if it doesn't exist.
*/
getOrCreateCounter: function(cat, name) {
var id;
if (cat.length)
id = cat + '.' + name;
else
id = name;
if (!this.counters[id])
this.counters[id] = new Counter(this, id, cat, name);
return this.counters[id];
},
/**
* Shifts all the timestamps inside this CPU forward by the amount
* specified.
*/
shiftTimestampsForward: function(amount) {
for (var sI = 0; sI < this.slices.length; sI++)
this.slices[sI].start = (this.slices[sI].start + amount);
for (var id in this.counters)
this.counters[id].shiftTimestampsForward(amount);
},
/**
* Updates the range based on the current slices attached to the cpu.
*/
updateBounds: function() {
this.bounds.reset();
if (this.slices.length) {
this.bounds.addValue(this.slices[0].start);
this.bounds.addValue(this.slices[this.slices.length - 1].end);
}
for (var id in this.counters) {
this.counters[id].updateBounds();
this.bounds.addRange(this.counters[id].bounds);
}
},
addCategoriesToDict: function(categoriesDict) {
for (var i = 0; i < this.slices.length; i++)
categoriesDict[this.slices[i].category] = true;
for (var id in this.counters)
categoriesDict[this.counters[id].category] = true;
},
get userFriendlyName() {
return 'CPU ' + this.cpuNumber;
},
/*
* Returns the index of the slice in the CPU's slices, or undefined.
*/
indexOf: function(cpuSlice) {
var i = base.findLowIndexInSortedArray(
this.slices,
function(slice) { return slice.start; },
cpuSlice.start);
if (this.slices[i] !== cpuSlice)
return undefined;
return i;
},
iterateAllEvents: function(callback) {
this.slices.forEach(callback);
for (var id in this.counters)
this.counters[id].iterateAllEvents(callback);
}
};
/**
* Comparison between processes that orders by cpuNumber.
*/
Cpu.compare = function(x, y) {
return x.cpuNumber - y.cpuNumber;
};
return {
Cpu: Cpu,
CpuSlice: CpuSlice,
ThreadTimeSlice: ThreadTimeSlice
};
});
|
