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
|
///////////////////////////////////////////////////////
// Perform.cpp : implementation file
//
// NOTE:: these functions depend on the 64 bit performance timer
// found in Pentium processors. This timer may not be present
// in some of the non-Intel versions.
// Also it may not work with multi core CPU's across threads.
//
// History:
// 2010-11-10 Initial creation MSW
// 2011-03-27 Initial release
// 2011-04-26 Added define to remove assembly from compile
////////////////////////////////////////////////////////////////////////
//#define USE_PERFORMANCE //uncomment to use
//==========================================================================================
// + + + This Software is released under the "Simplified BSD License" + + +
//Copyright 2010 Moe Wheatley. All rights reserved.
//
//Redistribution and use in source and binary forms, with or without modification, are
//permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. 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.
//
//THIS SOFTWARE IS PROVIDED BY Moe Wheatley ``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 Moe Wheatley 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 views and conclusions contained in the software and documentation are those of the
//authors and should not be interpreted as representing official policies, either expressed
//or implied, of Moe Wheatley.
//==========================================================================================
#include "interface/perform.h"
#include <QtGlobal>
#include <QDebug>
#define CPUCLOCKRATEGHZ 3 //manually set to CPU core clock speed
/////////////////////////////////////////////////////////////////////////////
static quint64 StartTime;
static quint64 StopTime;
static quint64 DeltaTime;
static quint64 CountFreq;
static quint64 DeltaTimeMax;
static quint64 DeltaTimeMin;
static quint64 DeltaTimeAve;
static quint64 DeltaSamples;
static quint64 Length;
//////////////// Time measuring routine using Pentium timer
static quint64 QueryPerformanceCounter()
{
quint64 val=0;
#ifdef USE_PERFORMANCE
quint32 eax, edx;
__asm__ __volatile__("cpuid": : : "ax", "bx", "cx", "dx");
__asm__ __volatile__("rdtsc":"=a"(eax), "=d"(edx));
val = edx;
val = val << 32;
val += eax;
#endif
return val;
}
// call to initialize the prformance timer
void InitPerformance()
{
Length = 0;
DeltaTimeMax = 0;
DeltaTimeAve = 0;
DeltaSamples = 0;
DeltaTimeMin = 0x7FFFFFF;
CountFreq = CPUCLOCKRATEGHZ;
}
// Starts the performance timer
void StartPerformance()
{
StartTime = QueryPerformanceCounter();
}
// Stop performance timer and calculate timing values
void StopPerformance(int n)
{
StopTime = QueryPerformanceCounter();
DeltaTime = (StopTime-StartTime);
DeltaTimeAve += DeltaTime;
DeltaSamples++;
if( DeltaTime>DeltaTimeMax )
{
DeltaTimeMax = DeltaTime;
}
if( DeltaTime<DeltaTimeMin )
{
DeltaTimeMin = DeltaTime;
}
Length += n;
}
// Call this to measure time between succesive calls to SamplePerformance()
void SamplePerformance()
{
if( DeltaTimeMax == 0 )
{
StartTime = QueryPerformanceCounter();
DeltaTimeMax = 1;
}
else
{
StopTime = QueryPerformanceCounter();
DeltaTime = StopTime-StartTime;
DeltaTimeAve += DeltaTime;
if( DeltaTime>DeltaTimeMax )
{
DeltaTimeMax = DeltaTime;
}
if( DeltaTime<DeltaTimeMin )
{
DeltaTimeMin = DeltaTime;
}
StartTime = QueryPerformanceCounter();
DeltaSamples++;
Length++;
}
}
// output various timing statistics to Message Box
// DeltaTimeMax == maximum time between start()-stop() or sample()-Sample()
// DeltaTimeMin == minimum time between start()-stop() or sample()-Sample()
// DeltaTimeAve == average time between start()-stop() or sample()-Sample()
// DeltaSamples == number of time samples captured
void ReadPerformance()
{
if(DeltaSamples != 0 )
{
DeltaTime = (DeltaTime)/CountFreq;
DeltaTimeMin = (DeltaTimeMin)/CountFreq;
DeltaTimeMax = (DeltaTimeMax)/CountFreq;
DeltaTimeAve = (DeltaTimeAve)/CountFreq;
float fAve= (float)DeltaTimeAve/( (float)Length);
qDebug()<<"Length "<<Length/DeltaSamples;
if(fAve>1e6)
{
qDebug()<<"Delta Time Max mSec = "<<DeltaTimeMax/1000000 <<"Delta Time Min mSec = "<<DeltaTimeMin/1000000;
qDebug()<<"Ave mSec= "<<fAve/1000000.0<<" #Samples = "<< DeltaSamples;
}
else if(fAve>1e3)
{
qDebug()<<"Delta Time Max uSec = "<<DeltaTimeMax/1000 <<"Delta Time Min uSec = "<<DeltaTimeMin/1000;
qDebug()<<"Ave uSec= "<<fAve/1000.0<<" #Samples = "<< DeltaSamples;
}
else
{
qDebug()<<"Delta Time Max nSec = "<<DeltaTimeMax <<"Delta Time Min nSec = "<<DeltaTimeMin;
qDebug()<<"Ave nSec= "<<fAve<<" #Samples = "<< DeltaSamples;
}
}
}
int GetDeltaPerformance()
{
quint64 delta = ((StopTime-StartTime))/CountFreq;
return (int)delta;
}
|
