| 1 | /* |
|---|---|
| 2 | * Copyright Andrey Semashev 2007 - 2015. |
| 3 | * Distributed under the Boost Software License, Version 1.0. |
| 4 | * (See accompanying file LICENSE_1_0.txt or copy at |
| 5 | * http://www.boost.org/LICENSE_1_0.txt) |
| 6 | */ |
| 7 | /*! |
| 8 | * \file stateless_allocator.hpp |
| 9 | * \author Andrey Semashev |
| 10 | * \date 11.02.2012 |
| 11 | * |
| 12 | * \brief This header is the Boost.Log library implementation, see the library documentation |
| 13 | * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. |
| 14 | */ |
| 15 | |
| 16 | #ifndef BOOST_LOG_STATELESS_ALLOCATOR_HPP_INCLUDED_ |
| 17 | #define BOOST_LOG_STATELESS_ALLOCATOR_HPP_INCLUDED_ |
| 18 | |
| 19 | #include <boost/log/detail/config.hpp> |
| 20 | #include <cstddef> |
| 21 | #include <cstdlib> |
| 22 | #include <memory> |
| 23 | #include <boost/log/detail/header.hpp> |
| 24 | |
| 25 | #ifdef BOOST_HAS_PRAGMA_ONCE |
| 26 | #pragma once |
| 27 | #endif |
| 28 | |
| 29 | namespace boost { |
| 30 | |
| 31 | BOOST_LOG_OPEN_NAMESPACE |
| 32 | |
| 33 | namespace aux { |
| 34 | |
| 35 | #if defined(_STLPORT_VERSION) |
| 36 | |
| 37 | #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) |
| 38 | |
| 39 | template< typename T > |
| 40 | using stateless_allocator = std::allocator< T >; |
| 41 | |
| 42 | #else |
| 43 | |
| 44 | template< typename T > |
| 45 | struct stateless_allocator : |
| 46 | public std::allocator< T > |
| 47 | { |
| 48 | }; |
| 49 | |
| 50 | #endif |
| 51 | |
| 52 | #else |
| 53 | |
| 54 | template< typename T > |
| 55 | struct stateless_allocator |
| 56 | { |
| 57 | template< typename U > |
| 58 | struct rebind |
| 59 | { |
| 60 | typedef stateless_allocator< U > other; |
| 61 | }; |
| 62 | |
| 63 | typedef T value_type; |
| 64 | typedef value_type* pointer; |
| 65 | typedef value_type const* const_pointer; |
| 66 | typedef value_type& reference; |
| 67 | typedef value_type const& const_reference; |
| 68 | typedef std::size_t size_type; |
| 69 | typedef std::ptrdiff_t difference_type; |
| 70 | |
| 71 | static pointer allocate(size_type n, const void* = NULL) |
| 72 | { |
| 73 | pointer p = static_cast< pointer >(std::malloc(size: n * sizeof(value_type))); |
| 74 | if (p) |
| 75 | return p; |
| 76 | else |
| 77 | throw std::bad_alloc(); |
| 78 | } |
| 79 | static void deallocate(pointer p, size_type) |
| 80 | { |
| 81 | std::free(ptr: p); |
| 82 | } |
| 83 | }; |
| 84 | |
| 85 | #endif |
| 86 | |
| 87 | } // namespace aux |
| 88 | |
| 89 | BOOST_LOG_CLOSE_NAMESPACE // namespace log |
| 90 | |
| 91 | } // namespace boost |
| 92 | |
| 93 | #include <boost/log/detail/footer.hpp> |
| 94 | |
| 95 | #endif // BOOST_LOG_STATELESS_ALLOCATOR_HPP_INCLUDED_ |
| 96 |