79 lines
1.4 KiB
C++
79 lines
1.4 KiB
C++
/*
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Copyright 2019 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License, Version 1.0.
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(http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/config.hpp>
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#if !defined(BOOST_NO_CXX11_ALLOCATOR)
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#include <boost/core/alloc_construct.hpp>
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#include <boost/core/lightweight_test.hpp>
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class type {
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public:
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explicit type(int x)
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: value_(x) { }
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int value() const {
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return value_;
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}
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static int count;
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private:
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type(const type&);
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type& operator=(const type&);
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int value_;
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};
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int type::count = 0;
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template<class T>
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struct creator {
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typedef T value_type;
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creator() { }
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template<class U>
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creator(const creator<U>&) { }
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T* allocate(std::size_t size) {
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return static_cast<T*>(::operator new(sizeof(T) * size));
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}
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void deallocate(T* ptr, std::size_t) {
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::operator delete(ptr);
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}
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template<class V>
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void construct(type* ptr, const V& value) {
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::new(static_cast<void*>(ptr)) type(value + 1);
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++type::count;
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}
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void destroy(type* ptr) {
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ptr->~type();
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--type::count;
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}
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};
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int main()
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{
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creator<type> a;
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type* p = a.allocate(1);
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boost::alloc_construct(a, p, 1);
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BOOST_TEST_EQ(type::count, 1);
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BOOST_TEST_EQ(p->value(), 2);
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boost::alloc_destroy(a, p);
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BOOST_TEST_EQ(type::count, 0);
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return boost::report_errors();
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}
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#else
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int main()
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{
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return 0;
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}
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#endif
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