cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / c++ / 4.7 / ext / new_allocator.h

diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/new_allocator.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/new_allocator.h
new file mode 100644 (file)
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+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/new_allocator.h
@@ -0,0 +1,140 @@
+// Allocator that wraps operator new -*- C++ -*-
+
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2009, 2010
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file ext/new_allocator.h
+ *  This file is a GNU extension to the Standard C++ Library.
+ */
+
+#ifndef _NEW_ALLOCATOR_H
+#define _NEW_ALLOCATOR_H 1
+
+#include <bits/c++config.h>
+#include <new>
+#include <bits/functexcept.h>
+#include <bits/move.h>
+
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  using std::size_t;
+  using std::ptrdiff_t;
+
+  /**
+   *  @brief  An allocator that uses global new, as per [20.4].
+   *  @ingroup allocators
+   *
+   *  This is precisely the allocator defined in the C++ Standard. 
+   *    - all allocation calls operator new
+   *    - all deallocation calls operator delete
+   */
+  template<typename _Tp>
+    class new_allocator
+    {
+    public:
+      typedef size_t     size_type;
+      typedef ptrdiff_t  difference_type;
+      typedef _Tp*       pointer;
+      typedef const _Tp* const_pointer;
+      typedef _Tp&       reference;
+      typedef const _Tp& const_reference;
+      typedef _Tp        value_type;
+
+      template<typename _Tp1>
+        struct rebind
+        { typedef new_allocator<_Tp1> other; };
+
+      new_allocator() _GLIBCXX_USE_NOEXCEPT { }
+
+      new_allocator(const new_allocator&) _GLIBCXX_USE_NOEXCEPT { }
+
+      template<typename _Tp1>
+        new_allocator(const new_allocator<_Tp1>&) _GLIBCXX_USE_NOEXCEPT { }
+
+      ~new_allocator() _GLIBCXX_USE_NOEXCEPT { }
+
+      pointer
+      address(reference __x) const _GLIBCXX_NOEXCEPT
+      { return std::__addressof(__x); }
+
+      const_pointer
+      address(const_reference __x) const _GLIBCXX_NOEXCEPT
+      { return std::__addressof(__x); }
+
+      // NB: __n is permitted to be 0.  The C++ standard says nothing
+      // about what the return value is when __n == 0.
+      pointer
+      allocate(size_type __n, const void* = 0)
+      { 
+       if (__n > this->max_size())
+         std::__throw_bad_alloc();
+
+       return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp)));
+      }
+
+      // __p is not permitted to be a null pointer.
+      void
+      deallocate(pointer __p, size_type)
+      { ::operator delete(__p); }
+
+      size_type
+      max_size() const _GLIBCXX_USE_NOEXCEPT
+      { return size_t(-1) / sizeof(_Tp); }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+      template<typename _Up, typename... _Args>
+        void
+        construct(_Up* __p, _Args&&... __args)
+       { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
+
+      template<typename _Up>
+        void 
+        destroy(_Up* __p) { __p->~_Up(); }
+#else
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 402. wrong new expression in [some_] allocator::construct
+      void 
+      construct(pointer __p, const _Tp& __val) 
+      { ::new((void *)__p) _Tp(__val); }
+
+      void 
+      destroy(pointer __p) { __p->~_Tp(); }
+#endif
+    };
+
+  template<typename _Tp>
+    inline bool
+    operator==(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
+    { return true; }
+  
+  template<typename _Tp>
+    inline bool
+    operator!=(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
+    { return false; }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif