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1 | // Copyright (C) 2006 The Trustees of Indiana University. |
2 | ||
3 | // Use, modification and distribution is subject to the Boost Software | |
4 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | // Authors: Douglas Gregor | |
8 | // Andrew Lumsdaine | |
9 | ||
10 | // This file contains the "unsafe_serialize" routine, which transforms | |
11 | // types they may not be serializable (such as void*) into | |
12 | // serializable equivalents. | |
13 | #ifndef BOOST_PROPERTY_MAP_UNSAFE_SERIALIZE_HPP | |
14 | #define BOOST_PROPERTY_MAP_UNSAFE_SERIALIZE_HPP | |
15 | ||
16 | #include <boost/mpi/datatype.hpp> | |
17 | #include <boost/serialization/is_bitwise_serializable.hpp> | |
18 | #include <boost/mpl/bool.hpp> | |
19 | #include <boost/mpl/if.hpp> | |
20 | #include <boost/cstdint.hpp> | |
21 | #include <boost/static_assert.hpp> | |
22 | #include <boost/type_traits.hpp> | |
23 | #include <utility> | |
24 | ||
25 | BOOST_IS_BITWISE_SERIALIZABLE(void*) | |
26 | namespace boost { namespace mpi { | |
27 | template<> struct is_mpi_datatype<void*> : mpl::true_ { }; | |
28 | } } // end namespace boost::mpi | |
29 | ||
30 | namespace boost { | |
31 | typedef mpl::if_c<(sizeof(int) == sizeof(void*)), | |
32 | int, | |
33 | mpl::if_c<(sizeof(long) == sizeof(void*)), | |
34 | long, | |
35 | mpl::if_c<(sizeof(void*) <= sizeof(boost::intmax_t)), | |
36 | boost::intmax_t, | |
37 | void>::type | |
38 | >::type | |
39 | >::type ptr_serialize_type; | |
40 | ||
41 | BOOST_STATIC_ASSERT ((!boost::is_void<ptr_serialize_type>::value)); | |
42 | ||
43 | template<typename T> inline T& unsafe_serialize(T& x) { return x; } | |
44 | ||
45 | inline ptr_serialize_type& unsafe_serialize(void*& x) | |
46 | { return reinterpret_cast<ptr_serialize_type&>(x); } | |
47 | ||
48 | // Force Boost.MPI to serialize a void* like a ptr_serialize_type | |
49 | namespace mpi { | |
50 | template<> inline MPI_Datatype get_mpi_datatype<void*>(void* const& x) | |
51 | { | |
52 | return get_mpi_datatype<ptr_serialize_type>(); | |
53 | } | |
54 | } | |
55 | ||
56 | template<typename T, typename U> | |
57 | struct unsafe_pair | |
58 | { | |
59 | unsafe_pair() { } | |
60 | unsafe_pair(const T& t, const U& u) : first(t), second(u) { } | |
61 | unsafe_pair(const std::pair<T, U>& p) : first(p.first), second(p.second) { } | |
62 | T first; | |
63 | U second; | |
64 | ||
65 | template<typename Archiver> | |
66 | void serialize(Archiver& ar, const unsigned /*version*/) | |
67 | { | |
68 | ar & unsafe_serialize(first) & unsafe_serialize(second); | |
69 | } | |
70 | }; | |
71 | ||
72 | template<typename T, typename U> | |
73 | bool operator<(unsafe_pair<T,U> const& x, unsafe_pair<T,U> const& y) | |
74 | { | |
75 | return std::make_pair(x.first, x.second) < | |
76 | std::make_pair(y.first, y.second); | |
77 | } | |
78 | ||
79 | } // end namespace boost | |
80 | ||
81 | #endif // BOOST_PROPERTY_MAP_UNSAFE_SERIALIZE_HPP |