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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/smart_ptr/shared_array.hpp
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+#ifndef BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
+#define BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
+
+//
+// shared_array.hpp
+//
+// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+// Copyright (c) 2001, 2002 Peter Dimov
+//
+// 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)
+//
+// See http://www.boost.org/libs/smart_ptr/shared_array.htm for documentation.
+//
+
+#include <boost/config.hpp> // for broken compiler workarounds
+
+#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+#include <boost/smart_ptr/detail/shared_array_nmt.hpp>
+#else
+
+#include <memory> // TR1 cyclic inclusion fix
+
+#include <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+
+#include <boost/smart_ptr/detail/shared_count.hpp>
+#include <boost/detail/workaround.hpp>
+
+#include <cstddef> // for std::ptrdiff_t
+#include <algorithm> // for std::swap
+#include <functional> // for std::less
+
+namespace boost
+{
+
+//
+// shared_array
+//
+// shared_array extends shared_ptr to arrays.
+// The array pointed to is deleted when the last shared_array pointing to it
+// is destroyed or reset.
+//
+
+template<class T> class shared_array
+{
+private:
+
+ // Borland 5.5.1 specific workarounds
+ typedef checked_array_deleter<T> deleter;
+ typedef shared_array<T> this_type;
+
+public:
+
+ typedef T element_type;
+
+ explicit shared_array(T * p = 0): px(p), pn(p, deleter())
+ {
+ }
+
+ //
+ // Requirements: D's copy constructor must not throw
+ //
+ // shared_array will release p by calling d(p)
+ //
+
+ template<class D> shared_array(T * p, D d): px(p), pn(p, d)
+ {
+ }
+
+// generated copy constructor, assignment, destructor are fine
+
+ void reset(T * p = 0)
+ {
+ BOOST_ASSERT(p == 0 || p != px);
+ this_type(p).swap(*this);
+ }
+
+ template <class D> void reset(T * p, D d)
+ {
+ this_type(p, d).swap(*this);
+ }
+
+ T & operator[] (std::ptrdiff_t i) const // never throws
+ {
+ BOOST_ASSERT(px != 0);
+ BOOST_ASSERT(i >= 0);
+ return px[i];
+ }
+
+ T * get() const // never throws
+ {
+ return px;
+ }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+ bool unique() const // never throws
+ {
+ return pn.unique();
+ }
+
+ long use_count() const // never throws
+ {
+ return pn.use_count();
+ }
+
+ void swap(shared_array<T> & other) // never throws
+ {
+ std::swap(px, other.px);
+ pn.swap(other.pn);
+ }
+
+private:
+
+ T * px; // contained pointer
+ detail::shared_count pn; // reference counter
+
+}; // shared_array
+
+template<class T> inline bool operator==(shared_array<T> const & a, shared_array<T> const & b) // never throws
+{
+ return a.get() == b.get();
+}
+
+template<class T> inline bool operator!=(shared_array<T> const & a, shared_array<T> const & b) // never throws
+{
+ return a.get() != b.get();
+}
+
+template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b) // never throws
+{
+ return std::less<T*>()(a.get(), b.get());
+}
+
+template<class T> void swap(shared_array<T> & a, shared_array<T> & b) // never throws
+{
+ a.swap(b);
+}
+
+} // namespace boost
+
+#endif // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+
+#endif // #ifndef BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED