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