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Diffstat (limited to 'src/boost/shared_ptr.hpp')
| -rw-r--r-- | src/boost/shared_ptr.hpp | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/src/boost/shared_ptr.hpp b/src/boost/shared_ptr.hpp deleted file mode 100644 index 1702ad268811..000000000000 --- a/src/boost/shared_ptr.hpp +++ /dev/null @@ -1,474 +0,0 @@ -#ifndef BOOST_SHARED_PTR_HPP_INCLUDED -#define BOOST_SHARED_PTR_HPP_INCLUDED - -// -// shared_ptr.hpp -// -// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999. -// Copyright (c) 2001, 2002, 2003 Peter Dimov -// -// Permission to copy, use, modify, sell and distribute this software -// is granted provided this copyright notice appears in all copies. -// This software is provided "as is" without express or implied -// warranty, and with no claim as to its suitability for any purpose. -// -// See http://www.boost.org/libs/smart_ptr/shared_ptr.htm for documentation. -// - -//#include <boost/config.hpp> // for broken compiler workarounds - -#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) -#include <boost/detail/shared_ptr_nmt.hpp> -#else - -#include <boost/assert.hpp> -#include <boost/checked_delete.hpp> -#include <boost/throw_exception.hpp> -#include <boost/detail/shared_count.hpp> -#include <boost/detail/workaround.hpp> - -#include <memory> // for std::auto_ptr -#include <algorithm> // for std::swap -#include <functional> // for std::less -#include <typeinfo> // for std::bad_cast -#include <iosfwd> // for std::basic_ostream - -#ifdef BOOST_MSVC // moved here to work around VC++ compiler crash -# pragma warning(push) -# pragma warning(disable:4284) // odd return type for operator-> -#endif - -namespace boost -{ - -template<class T> class weak_ptr; -template<class T> class enable_shared_from_this; - -namespace detail -{ - -struct static_cast_tag {}; -struct const_cast_tag {}; -struct dynamic_cast_tag {}; -struct polymorphic_cast_tag {}; - -template<class T> struct shared_ptr_traits -{ - typedef T & reference; -}; - -template<> struct shared_ptr_traits<void> -{ - typedef void reference; -}; - -#if !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS) - -template<> struct shared_ptr_traits<void const> -{ - typedef void reference; -}; - -template<> struct shared_ptr_traits<void volatile> -{ - typedef void reference; -}; - -template<> struct shared_ptr_traits<void const volatile> -{ - typedef void reference; -}; - -#endif - -// enable_shared_from_this support - -template<class T, class Y> void sp_enable_shared_from_this(boost::enable_shared_from_this<T> * pe, Y * px, shared_count const & pn) -{ - if(pe != 0) pe->_internal_weak_this._internal_assign(px, pn); -} - -inline void sp_enable_shared_from_this(void const volatile *, void const volatile *, shared_count const &) -{ -} - -} // namespace detail - - -// -// shared_ptr -// -// An enhanced relative of scoped_ptr with reference counted copy semantics. -// The object pointed to is deleted when the last shared_ptr pointing to it -// is destroyed or reset. -// - -template<class T> class shared_ptr -{ -private: - - // Borland 5.5.1 specific workaround - typedef shared_ptr<T> this_type; - -public: - - typedef T element_type; - typedef T value_type; - typedef T * pointer; - typedef typename detail::shared_ptr_traits<T>::reference reference; - - shared_ptr(): px(0), pn() // never throws in 1.30+ - { - } - - template<class Y> - explicit shared_ptr(Y * p): px(p), pn(p, checked_deleter<Y>()) // Y must be complete - { - detail::sp_enable_shared_from_this(p, p, pn); - } - - // - // Requirements: D's copy constructor must not throw - // - // shared_ptr will release p by calling d(p) - // - - template<class Y, class D> shared_ptr(Y * p, D d): px(p), pn(p, d) - { - detail::sp_enable_shared_from_this(p, p, pn); - } - -// generated copy constructor, assignment, destructor are fine... - -// except that Borland C++ has a bug, and g++ with -Wsynth warns -#if defined(__BORLANDC__) || defined(__GNUC__) - - shared_ptr & operator=(shared_ptr const & r) // never throws - { - px = r.px; - pn = r.pn; // shared_count::op= doesn't throw - return *this; - } - -#endif - - template<class Y> - explicit shared_ptr(weak_ptr<Y> const & r): pn(r.pn) // may throw - { - // it is now safe to copy r.px, as pn(r.pn) did not throw - px = r.px; - } - - template<class Y> - shared_ptr(shared_ptr<Y> const & r): px(r.px), pn(r.pn) // never throws - { - } - - template<class Y> - shared_ptr(shared_ptr<Y> const & r, detail::static_cast_tag): px(static_cast<element_type *>(r.px)), pn(r.pn) - { - } - - template<class Y> - shared_ptr(shared_ptr<Y> const & r, detail::const_cast_tag): px(const_cast<element_type *>(r.px)), pn(r.pn) - { - } - - template<class Y> - shared_ptr(shared_ptr<Y> const & r, detail::dynamic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn) - { - if(px == 0) // need to allocate new counter -- the cast failed - { - pn = detail::shared_count(); - } - } - - template<class Y> - shared_ptr(shared_ptr<Y> const & r, detail::polymorphic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn) - { - if(px == 0) - { - boost::throw_exception(std::bad_cast()); - } - } - -#ifndef BOOST_NO_AUTO_PTR - - template<class Y> - explicit shared_ptr(std::auto_ptr<Y> & r): px(r.get()), pn() - { - Y * tmp = r.get(); - pn = detail::shared_count(r); - detail::sp_enable_shared_from_this(tmp, tmp, pn); - } - -#endif - -#if !defined(BOOST_MSVC) || (BOOST_MSVC > 1200) - - template<class Y> - shared_ptr & operator=(shared_ptr<Y> const & r) // never throws - { - px = r.px; - pn = r.pn; // shared_count::op= doesn't throw - return *this; - } - -#endif - -#ifndef BOOST_NO_AUTO_PTR - - template<class Y> - shared_ptr & operator=(std::auto_ptr<Y> & r) - { - this_type(r).swap(*this); - return *this; - } - -#endif - - void reset() // never throws in 1.30+ - { - this_type().swap(*this); - } - - template<class Y> void reset(Y * p) // Y must be complete - { - BOOST_ASSERT(p == 0 || p != px); // catch self-reset errors - this_type(p).swap(*this); - } - - template<class Y, class D> void reset(Y * p, D d) - { - this_type(p, d).swap(*this); - } - - reference operator* () const // never throws - { - BOOST_ASSERT(px != 0); - return *px; - } - - T * operator-> () const // never throws - { - BOOST_ASSERT(px != 0); - return px; - } - - T * get() const // never throws - { - return px; - } - - // implicit conversion to "bool" - -#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530) - - operator bool () const - { - return px != 0; - } - -#elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003)) - typedef T * (this_type::*unspecified_bool_type)() const; - - operator unspecified_bool_type() const // never throws - { - return px == 0? 0: &this_type::get; - } - -#else - - typedef T * this_type::*unspecified_bool_type; - - operator unspecified_bool_type() const // never throws - { - return px == 0? 0: &this_type::px; - } - -#endif - - // operator! is redundant, but some compilers need it - - bool operator! () const // never throws - { - return px == 0; - } - - bool unique() const // never throws - { - return pn.unique(); - } - - long use_count() const // never throws - { - return pn.use_count(); - } - - void swap(shared_ptr<T> & other) // never throws - { - std::swap(px, other.px); - pn.swap(other.pn); - } - - template<class Y> bool _internal_less(shared_ptr<Y> const & rhs) const - { - return pn < rhs.pn; - } - - void * _internal_get_deleter(std::type_info const & ti) const - { - return pn.get_deleter(ti); - } - -// Tasteless as this may seem, making all members public allows member templates -// to work in the absence of member template friends. (Matthew Langston) - -#if 0 - -private: - - template<class Y> friend class shared_ptr; - template<class Y> friend class weak_ptr; - - -#endif - - T * px; // contained pointer - detail::shared_count pn; // reference counter - -}; // shared_ptr - -template<class T, class U> inline bool operator==(shared_ptr<T> const & a, shared_ptr<U> const & b) -{ - return a.get() == b.get(); -} - -template<class T, class U> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<U> const & b) -{ - return a.get() != b.get(); -} - -#if __GNUC__ == 2 && __GNUC_MINOR__ <= 96 - -// Resolve the ambiguity between our op!= and the one in rel_ops - -template<class T> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<T> const & b) -{ - return a.get() != b.get(); -} - -#endif - -template<class T, class U> inline bool operator<(shared_ptr<T> const & a, shared_ptr<U> const & b) -{ - return a._internal_less(b); -} - -template<class T> inline void swap(shared_ptr<T> & a, shared_ptr<T> & b) -{ - a.swap(b); -} - -template<class T, class U> shared_ptr<T> static_pointer_cast(shared_ptr<U> const & r) -{ - return shared_ptr<T>(r, detail::static_cast_tag()); -} - -template<class T, class U> shared_ptr<T> const_pointer_cast(shared_ptr<U> const & r) -{ - return shared_ptr<T>(r, detail::const_cast_tag()); -} - -template<class T, class U> shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const & r) -{ - return shared_ptr<T>(r, detail::dynamic_cast_tag()); -} - -// shared_*_cast names are deprecated. Use *_pointer_cast instead. - -template<class T, class U> shared_ptr<T> shared_static_cast(shared_ptr<U> const & r) -{ - return shared_ptr<T>(r, detail::static_cast_tag()); -} - -template<class T, class U> shared_ptr<T> shared_dynamic_cast(shared_ptr<U> const & r) -{ - return shared_ptr<T>(r, detail::dynamic_cast_tag()); -} - -template<class T, class U> shared_ptr<T> shared_polymorphic_cast(shared_ptr<U> const & r) -{ - return shared_ptr<T>(r, detail::polymorphic_cast_tag()); -} - -template<class T, class U> shared_ptr<T> shared_polymorphic_downcast(shared_ptr<U> const & r) -{ - BOOST_ASSERT(dynamic_cast<T *>(r.get()) == r.get()); - return shared_static_cast<T>(r); -} - -// get_pointer() enables boost::mem_fn to recognize shared_ptr - -template<class T> inline T * get_pointer(shared_ptr<T> const & p) -{ - return p.get(); -} - -// operator<< - -#if defined(__GNUC__) && (__GNUC__ < 3) - -template<class Y> std::ostream & operator<< (std::ostream & os, shared_ptr<Y> const & p) -{ - os << p.get(); - return os; -} - -#else - -# if defined(BOOST_MSVC) && BOOST_WORKAROUND(BOOST_MSVC, <= 1200 && __SGI_STL_PORT) -// MSVC6 has problems finding std::basic_ostream through the using declaration in namespace _STL -using std::basic_ostream; -template<class E, class T, class Y> basic_ostream<E, T> & operator<< (basic_ostream<E, T> & os, shared_ptr<Y> const & p) -# else -template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< (std::basic_ostream<E, T> & os, shared_ptr<Y> const & p) -# endif -{ - os << p.get(); - return os; -} - -#endif - -// get_deleter (experimental) - -#if (defined(__GNUC__) && (__GNUC__ < 3)) || (defined(__EDG_VERSION__) && (__EDG_VERSION__ <= 238)) - -// g++ 2.9x doesn't allow static_cast<X const *>(void *) -// apparently EDG 2.38 also doesn't accept it - -template<class D, class T> D * get_deleter(shared_ptr<T> const & p) -{ - void const * q = p._internal_get_deleter(typeid(D)); - return const_cast<D *>(static_cast<D const *>(q)); -} - -#else - -template<class D, class T> D * get_deleter(shared_ptr<T> const & p) -{ - return static_cast<D *>(p._internal_get_deleter(typeid(D))); -} - -#endif - -} // namespace boost - -#ifdef BOOST_MSVC -# pragma warning(pop) -#endif - -#endif // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) - -#endif // #ifndef BOOST_SHARED_PTR_HPP_INCLUDED |