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
/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's 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.
//
// * The name of the copyright holders may not 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 Intel Corporation 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.
//
//M*/
#include "precomp.hpp"
#if !defined HAVE_TBB && !defined HAVE_OPENMP && !defined HAVE_GCD && !defined HAVE_CONCURRENCY
#ifdef __APPLE__
#define HAVE_GCD
#elif defined _MSC_VER && _MSC_VER >= 1600
#define HAVE_CONCURRENCY
#endif
#endif
#ifdef HAVE_CONCURRENCY
#include <ppl.h>
#elif defined HAVE_OPENMP
#include <omp.h>
#elif defined HAVE_GCD
#include <dispatch/dispatch.h>
#elif defined HAVE_TBB
#include "tbb/tbb_stddef.h"
#if TBB_VERSION_MAJOR*100 + TBB_VERSION_MINOR >= 202
#include "tbb/tbb.h"
#include "tbb/task.h"
#undef min
#undef max
#else
#undef HAVE_TBB
#endif // end TBB version
#endif // HAVE_CONCURRENCY
/*
HAVE_TBB - using TBB
HAVE_GCD - using GCD
HAVE_OPENMP - using OpenMP
HAVE_CONCURRENCY - using visual studio 2010 concurrency
*/
namespace cv
{
ParallelLoopBody::~ParallelLoopBody() { }
#ifdef HAVE_TBB
class TbbProxyLoopBody
{
public:
TbbProxyLoopBody(const ParallelLoopBody& _body) :
body(&_body)
{ }
void operator ()(const tbb::blocked_range<int>& range) const
{
body->operator()(Range(range.begin(), range.end()));
}
private:
const ParallelLoopBody* body;
};
#endif // end HAVE_TBB
#ifdef HAVE_GCD
static
void block_function(void* context, size_t index)
{
ParallelLoopBody* ptr_body = static_cast<ParallelLoopBody*>(context);
ptr_body->operator()(Range(index, index + 1));
}
#endif // HAVE_GCD
void parallel_for_(const Range& range, const ParallelLoopBody& body)
{
#ifdef HAVE_TBB
tbb::parallel_for(tbb::blocked_range<int>(range.start, range.end), TbbProxyLoopBody(body));
#elif defined HAVE_CONCURRENCY
class ConcurrencyProxyLoopBody
{
public:
ConcurrencyProxyLoopBody(const ParallelLoopBody& body) : _body(body) {}
void operator ()(int i) const
{
_body(Range(i, i + 1));
}
private:
const ParallelLoopBody& _body;
ConcurrencyProxyLoopBody& operator=(const ConcurrencyProxyLoopBody&) {return *this;}
} proxy(body);
Concurrency::parallel_for(range.start, range.end, proxy);
#elif defined HAVE_OPENMP
#pragma omp parallel for schedule(dynamic)
for (int i = range.start; i < range.end; ++i)
body(Range(i, i + 1));
#elif defined (HAVE_GCD)
dispatch_queue_t concurrent_queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_apply_f(range.end - range.start, concurrent_queue, &const_cast<ParallelLoopBody&>(body), block_function);
#else
body(range);
#endif // end HAVE_TBB
}
} // namespace cv