asio/detail/scoped_ptr.hpp

0001 //
0002 // detail/scoped_ptr.hpp
0003 // ~~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010
0011 #ifndef BOOST_ASIO_DETAIL_SCOPED_PTR_HPP
0012 #define BOOST_ASIO_DETAIL_SCOPED_PTR_HPP
0013
0014 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
0015 # pragma once
0016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
0017
0018 #include <boost/asio/detail/config.hpp>
0019
0020 #include <boost/asio/detail/push_options.hpp>
0021
0022 namespace boost {
0023 namespace asio {
0024 namespace detail {
0025
0026 template <typename T>
0027 class scoped_ptr
0028 {
0029 public:
0030   // Constructor.
0031   explicit scoped_ptr(T* p = 0)
0032     : p_(p)
0033   {
0034   }
0035
0036   // Destructor.
0037   ~scoped_ptr()
0038   {
0039     delete p_;
0040   }
0041
0042   // Access.
0043   T* get()
0044   {
0045     return p_;
0046   }
0047
0048   // Access.
0049   T* operator->()
0050   {
0051     return p_;
0052   }
0053
0054   // Dereference.
0055   T& operator*()
0056   {
0057     return *p_;
0058   }
0059
0060   // Reset pointer.
0061   void reset(T* p = 0)
0062   {
0063     delete p_;
0064     p_ = p;
0065   }
0066
0067   // Release ownership of the pointer.
0068   T* release()
0069   {
0070     T* tmp = p_;
0071     p_ = 0;
0072     return tmp;
0073   }
0074
0075 private:
0076   // Disallow copying and assignment.
0077   scoped_ptr(const scoped_ptr&);
0078   scoped_ptr& operator=(const scoped_ptr&);
0079
0080   T* p_;
0081 };
0082
0083 } // namespace detail
0084 } // namespace asio
0085 } // namespace boost
0086
0087 #include <boost/asio/detail/pop_options.hpp>
0088
0089 #endif // BOOST_ASIO_DETAIL_SCOPED_PTR_HPP