forked from boostorg/unordered
85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
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// Copyright 2006-2009 Daniel James.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if !defined(BOOST_UNORDERED_TEST_MALLOC_ALLOCATOR_HEADER)
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#define BOOST_UNORDERED_TEST_MALLOC_ALLOCATOR_HEADER
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#include <cstddef>
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#include <cstdlib>
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#include <boost/limits.hpp>
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#include <new>
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#if defined(BOOST_MSVC)
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#pragma warning(push)
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#pragma warning(disable:4100) // unreferenced formal parameter
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#endif
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namespace test
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{
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template <class T>
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struct malloc_allocator
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{
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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typedef T* pointer;
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typedef T const* const_pointer;
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typedef T& reference;
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typedef T const& const_reference;
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typedef T value_type;
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template <class U> struct rebind { typedef malloc_allocator<U> other; };
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malloc_allocator() {}
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template <class Y> malloc_allocator(malloc_allocator<Y> const&) {}
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malloc_allocator(malloc_allocator const&) {}
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pointer address(reference r) { return &r; }
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const_pointer address(const_reference r) { return &r; }
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pointer allocate(size_type n) {
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using namespace std;
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T* ptr = static_cast<T*>(malloc(n * sizeof(T)));
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if(!ptr) throw std::bad_alloc();
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return ptr;
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}
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pointer allocate(size_type n, void const* u) { return allocate(n); }
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void deallocate(pointer p, size_type) {
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using namespace std;
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free(p);
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}
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void construct(pointer p, T const& t) { new(p) T(t); }
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void destroy(pointer p) { p->~T(); }
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size_type max_size() const {
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return (std::numeric_limits<size_type>::max)();
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}
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bool operator==(malloc_allocator const& x) const { return true; }
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bool operator!=(malloc_allocator const& x) const { return false; }
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#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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template <class T> void deallocate(T* p, size_type) {
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using namespace std;
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free(p);
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}
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char* _Charalloc(size_type n) {
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using namespace std;
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T* ptr = static_cast<T*>(malloc(n * sizeof(char)));
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if(!ptr) throw std::bad_alloc();
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return (char*) ptr;
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}
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#endif
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};
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}
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#if defined(BOOST_MSVC)
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#pragma warning(pop)
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#pragma warning(disable:4100) // unreferenced formal parameter
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#endif
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#endif
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