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/*
Copyright 2012-2015 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/core/lightweight_test.hpp>
#include <boost/smart_ptr/enable_shared_from_this.hpp>
#include <boost/smart_ptr/make_shared.hpp>
template<class T = void>
struct creator {
typedef T value_type;
template<class U>
struct rebind {
typedef creator<U> other;
};
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 T, class U>
inline bool
operator==(const creator<T>&, const creator<U>&)
{
return true;
}
template<class T, class U>
inline bool
operator!=(const creator<T>&, const creator<U>&)
{
return false;
}
class type
: public boost::enable_shared_from_this<type> {
public:
static unsigned instances;
type() {
++instances;
}
~type() {
--instances;
}
private:
type(const type&);
type& operator=(const type&);
};
unsigned type::instances = 0;
int main()
{
BOOST_TEST(type::instances == 0);
{
boost::shared_ptr<type[]> result =
boost::allocate_shared<type[]>(creator<type>(), 3);
try {
result[0].shared_from_this();
BOOST_ERROR("shared_from_this did not throw");
} catch (...) {
BOOST_TEST(type::instances == 3);
}
}
BOOST_TEST(type::instances == 0);
{
boost::shared_ptr<type[]> result =
boost::allocate_shared_noinit<type[]>(creator<>(), 3);
try {
result[0].shared_from_this();
BOOST_ERROR("shared_from_this did not throw");
} catch (...) {
BOOST_TEST(type::instances == 3);
}
}
return boost::report_errors();
}
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