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
|
/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// The PerformanceTimer class measures elapsed time between Start and
// Stop (using the highest resolution timer available on the
// platform).
#include "core/cross/precompile.h"
#include "core/cross/performance_timer.h"
#include "base/logging.h"
namespace o3d {
PerformanceTimer::PerformanceTimer(const char *name)
: name_(name),
start_time_(0),
accum_time_(0) {
start_time_ = 0;
accum_time_ = 0;
}
void PerformanceTimer::Start() {
LARGE_INTEGER start;
QueryPerformanceCounter(&start);
start_time_ = start.QuadPart;
}
void PerformanceTimer::Stop() {
LARGE_INTEGER end;
QueryPerformanceCounter(&end);
accum_time_ += end.QuadPart - start_time_;
}
double PerformanceTimer::GetElapsedTime() {
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
return static_cast<double>(accum_time_) / freq.QuadPart;
}
void PerformanceTimer::Print() {
LOG(INFO) << name_.c_str() << " " << GetElapsedTime() << " seconds";
}
void PerformanceTimer::StopAndPrint() {
Stop();
Print();
}
}
|
