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memory.h
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1 /*
2 * #%L
3 * OME-COMPAT C++ library for C++ compatibility/portability
4 * %%
5 * Copyright © 2006 - 2015 Open Microscopy Environment:
6 * - Massachusetts Institute of Technology
7 * - National Institutes of Health
8 * - University of Dundee
9 * - Board of Regents of the University of Wisconsin-Madison
10 * - Glencoe Software, Inc.
11 * %%
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions are met:
14 *
15 * 1. Redistributions of source code must retain the above copyright notice,
16 * this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright notice,
18 * this list of conditions and the following disclaimer in the documentation
19 * and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
33 * The views and conclusions contained in the software and documentation are
34 * those of the authors and should not be interpreted as representing official
35 * policies, either expressed or implied, of any organization.
36 * #L%
37 */
38
48 #ifndef OME_COMPAT_MEMORY_H
49 # define OME_COMPAT_MEMORY_H
50
51 # include <ome/common/config.h>
52
53 # ifdef OME_HAVE_MEMORY
54 # include <memory>
55 # elif OME_HAVE_BOOST_SHARED_PTR
56 # include <boost/enable_shared_from_this.hpp>
57 # include <boost/make_shared.hpp>
58 # include <boost/shared_ptr.hpp>
59 # ifdef OME_HAVE_BOOST_OWNER_LESS
60 # include <boost/smart_ptr/owner_less.hpp>
61 # else
62 # include <functional>
63 // From Boost 1.56 <boost/smart_ptr/owner_less.hpp> for older boost
64 // versions; owner_before replaced with direct operator< usage which
65 // older shared_ptr/weak_ptr implementations do not provide. shared
66 // and weak are not directly comparable, so convert to weak for these
67 // comparisons.
68 namespace boost
69 {
70 template<typename T> class shared_ptr;
71 template<typename T> class weak_ptr;
72
73 namespace detail
74 {
75 template<typename T, typename U>
76 struct generic_owner_less : public std::binary_function<T, T, bool>
77 {
78 bool operator()(const T &lhs, const T &rhs) const
79 {
80 return lhs < rhs;
81 }
82 bool operator()(const T &lhs, const U &rhs) const
83 {
84 return weak_ptr<typename T::element_type>(lhs) < weak_ptr<typename T::element_type>(rhs);
85 }
86 bool operator()(const U &lhs, const T &rhs) const
87 {
88 return weak_ptr<typename T::element_type>(lhs) < weak_ptr<typename T::element_type>(rhs);
89 }
90 };
91 } // namespace detail
92
93 template<typename T> struct owner_less;
94
95 template<typename T>
96 struct owner_less<shared_ptr<T> >:
97 public detail::generic_owner_less<shared_ptr<T>, weak_ptr<T> >
98 {};
99
100 template<typename T>
101 struct owner_less<weak_ptr<T> >:
102 public detail::generic_owner_less<weak_ptr<T>, shared_ptr<T> >
103 {};
104
105 } // namespace boost
106 # endif
107 namespace ome
108 {
109 namespace compat
110 {
111 using boost::shared_ptr;
112 using boost::weak_ptr;
113 using boost::static_pointer_cast;
114 using boost::const_pointer_cast;
115 using boost::dynamic_pointer_cast;
116 using boost::enable_shared_from_this;
117 using boost::make_shared;
118 using boost::owner_less;
119 }
120 }
121 # else
122 # error A shared_ptr implementation is not available
123 # endif
124
125 #endif // OME_COMPAT_MEMORY_H
126
127 /*
128 * Local Variables:
129 * mode:C++
130 * End:
131 */
boost
Definition: length.h:576
ome
Definition: boolean.h:48