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-rw-r--r--3rdParty/Boost/boost/smart_ptr/detail/shared_array_nmt.hpp151
1 files changed, 151 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/smart_ptr/detail/shared_array_nmt.hpp b/3rdParty/Boost/boost/smart_ptr/detail/shared_array_nmt.hpp
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+++ b/3rdParty/Boost/boost/smart_ptr/detail/shared_array_nmt.hpp
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+#ifndef BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED
+
+//
+// detail/shared_array_nmt.hpp - shared_array.hpp without member templates
+//
+// (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/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/smart_ptr/detail/atomic_count.hpp>
+
+#include <cstddef> // for std::ptrdiff_t
+#include <algorithm> // for std::swap
+#include <functional> // for std::less
+#include <new> // for std::bad_alloc
+
+namespace boost
+{
+
+template<class T> class shared_array
+{
+private:
+
+ typedef detail::atomic_count count_type;
+
+public:
+
+ typedef T element_type;
+
+ explicit shared_array(T * p = 0): px(p)
+ {
+#ifndef BOOST_NO_EXCEPTIONS
+
+ try // prevent leak if new throws
+ {
+ pn = new count_type(1);
+ }
+ catch(...)
+ {
+ boost::checked_array_delete(p);
+ throw;
+ }
+
+#else
+
+ pn = new count_type(1);
+
+ if(pn == 0)
+ {
+ boost::checked_array_delete(p);
+ boost::throw_exception(std::bad_alloc());
+ }
+
+#endif
+ }
+
+ ~shared_array()
+ {
+ if(--*pn == 0)
+ {
+ boost::checked_array_delete(px);
+ delete pn;
+ }
+ }
+
+ shared_array(shared_array const & r) : px(r.px) // never throws
+ {
+ pn = r.pn;
+ ++*pn;
+ }
+
+ shared_array & operator=(shared_array const & r)
+ {
+ shared_array(r).swap(*this);
+ return *this;
+ }
+
+ void reset(T * p = 0)
+ {
+ BOOST_ASSERT(p == 0 || p != px);
+ shared_array(p).swap(*this);
+ }
+
+ T * get() const // never throws
+ {
+ return px;
+ }
+
+ T & operator[](std::ptrdiff_t i) const // never throws
+ {
+ BOOST_ASSERT(px != 0);
+ BOOST_ASSERT(i >= 0);
+ return px[i];
+ }
+
+ long use_count() const // never throws
+ {
+ return *pn;
+ }
+
+ bool unique() const // never throws
+ {
+ return *pn == 1;
+ }
+
+ void swap(shared_array<T> & other) // never throws
+ {
+ std::swap(px, other.px);
+ std::swap(pn, other.pn);
+ }
+
+private:
+
+ T * px; // contained pointer
+ count_type * pn; // ptr to reference counter
+
+}; // shared_array
+
+template<class T, class U> inline bool operator==(shared_array<T> const & a, shared_array<U> const & b)
+{
+ return a.get() == b.get();
+}
+
+template<class T, class U> inline bool operator!=(shared_array<T> const & a, shared_array<U> const & b)
+{
+ return a.get() != b.get();
+}
+
+template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b)
+{
+ return std::less<T*>()(a.get(), b.get());
+}
+
+template<class T> void swap(shared_array<T> & a, shared_array<T> & b)
+{
+ a.swap(b);
+}
+
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_ARRAY_NMT_HPP_INCLUDED