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-rw-r--r--boost/smart_ptr/enable_shared_from_this2.hpp132
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diff --git a/boost/smart_ptr/enable_shared_from_this2.hpp b/boost/smart_ptr/enable_shared_from_this2.hpp
deleted file mode 100644
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--- a/boost/smart_ptr/enable_shared_from_this2.hpp
+++ /dev/null
@@ -1,132 +0,0 @@
-#ifndef BOOST_ENABLE_SHARED_FROM_THIS2_HPP_INCLUDED
-#define BOOST_ENABLE_SHARED_FROM_THIS2_HPP_INCLUDED
-
-//
-// enable_shared_from_this2.hpp
-//
-// Copyright 2002, 2009 Peter Dimov
-// Copyright 2008 Frank Mori Hess
-//
-// Distributed under the Boost Software License, Version 1.0.
-// See accompanying file LICENSE_1_0.txt or copy at
-// http://www.boost.org/LICENSE_1_0.txt
-//
-
-#include <boost/config.hpp>
-#include <boost/shared_ptr.hpp>
-#include <boost/assert.hpp>
-#include <boost/detail/workaround.hpp>
-
-namespace boost
-{
-
-namespace detail
-{
-
-class esft2_deleter_wrapper
-{
-private:
-
- shared_ptr<void> deleter_;
-
-public:
-
- esft2_deleter_wrapper()
- {
- }
-
- template< class T > void set_deleter( shared_ptr<T> const & deleter )
- {
- deleter_ = deleter;
- }
-
- template< class T> void operator()( T* )
- {
- BOOST_ASSERT( deleter_.use_count() <= 1 );
- deleter_.reset();
- }
-};
-
-} // namespace detail
-
-template< class T > class enable_shared_from_this2
-{
-protected:
-
- enable_shared_from_this2()
- {
- }
-
- enable_shared_from_this2( enable_shared_from_this2 const & )
- {
- }
-
- enable_shared_from_this2 & operator=( enable_shared_from_this2 const & )
- {
- return *this;
- }
-
- ~enable_shared_from_this2()
- {
- BOOST_ASSERT( shared_this_.use_count() <= 1 ); // make sure no dangling shared_ptr objects exist
- }
-
-private:
-
- mutable weak_ptr<T> weak_this_;
- mutable shared_ptr<T> shared_this_;
-
-public:
-
- shared_ptr<T> shared_from_this()
- {
- init_weak_once();
- return shared_ptr<T>( weak_this_ );
- }
-
- shared_ptr<T const> shared_from_this() const
- {
- init_weak_once();
- return shared_ptr<T>( weak_this_ );
- }
-
-private:
-
- void init_weak_once() const
- {
- if( weak_this_._empty() )
- {
- shared_this_.reset( static_cast< T* >( 0 ), detail::esft2_deleter_wrapper() );
- weak_this_ = shared_this_;
- }
- }
-
-public: // actually private, but avoids compiler template friendship issues
-
- // Note: invoked automatically by shared_ptr; do not call
- template<class X, class Y> void _internal_accept_owner( shared_ptr<X> * ppx, Y * py ) const
- {
- BOOST_ASSERT( ppx != 0 );
-
- if( weak_this_.use_count() == 0 )
- {
- weak_this_ = shared_ptr<T>( *ppx, py );
- }
- else if( shared_this_.use_count() != 0 )
- {
- BOOST_ASSERT( ppx->unique() ); // no weak_ptrs should exist either, but there's no way to check that
-
- detail::esft2_deleter_wrapper * pd = boost::get_deleter<detail::esft2_deleter_wrapper>( shared_this_ );
- BOOST_ASSERT( pd != 0 );
-
- pd->set_deleter( *ppx );
-
- ppx->reset( shared_this_, ppx->get() );
- shared_this_.reset();
- }
- }
-};
-
-} // namespace boost
-
-#endif // #ifndef BOOST_ENABLE_SHARED_FROM_THIS2_HPP_INCLUDED