Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / include / bits / allocator.h

diff --git a/libstdc++-v3/include/bits/allocator.h b/libstdc++-v3/include/bits/allocator.h
new file mode 100644 (file)
index 0000000..334fee5
--- /dev/null
+++ b/libstdc++-v3/include/bits/allocator.h
@@ -0,0 +1,181 @@
+// Allocators -*- C++ -*-
+
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+// 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/>.
+
+/*
+ * Copyright (c) 1996-1997
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Silicon Graphics makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ */
+
+/** @file allocator.h
+ *  This is an internal header file, included by other library headers.
+ *  You should not attempt to use it directly.
+ */
+
+#ifndef _ALLOCATOR_H
+#define _ALLOCATOR_H 1
+
+// Define the base class to std::allocator.
+#include <bits/c++allocator.h>
+
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+  /**
+   * @defgroup allocators Allocators
+   * @ingroup memory
+   *
+   * Classes encapsulating memory operations.
+   */
+
+  template<typename _Tp>
+    class allocator;
+
+  /// allocator<void> specialization.
+  template<>
+    class allocator<void>
+    {
+    public:
+      typedef size_t      size_type;
+      typedef ptrdiff_t   difference_type;
+      typedef void*       pointer;
+      typedef const void* const_pointer;
+      typedef void        value_type;
+
+      template<typename _Tp1>
+        struct rebind
+        { typedef allocator<_Tp1> other; };
+    };
+
+  /**
+   * @brief  The "standard" allocator, as per [20.4].
+   * @ingroup allocators
+   *
+   *  Further details:
+   *  http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt04ch11.html
+   */
+  template<typename _Tp>
+    class allocator: public __glibcxx_base_allocator<_Tp>
+    {
+   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 allocator<_Tp1> other; };
+
+      allocator() throw() { }
+
+      allocator(const allocator& __a) throw()
+      : __glibcxx_base_allocator<_Tp>(__a) { }
+
+      template<typename _Tp1>
+        allocator(const allocator<_Tp1>&) throw() { }
+
+      ~allocator() throw() { }
+
+      // Inherit everything else.
+    };
+
+  template<typename _T1, typename _T2>
+    inline bool
+    operator==(const allocator<_T1>&, const allocator<_T2>&)
+    { return true; }
+
+  template<typename _Tp>
+    inline bool
+    operator==(const allocator<_Tp>&, const allocator<_Tp>&)
+    { return true; }
+
+  template<typename _T1, typename _T2>
+    inline bool
+    operator!=(const allocator<_T1>&, const allocator<_T2>&)
+    { return false; }
+
+  template<typename _Tp>
+    inline bool
+    operator!=(const allocator<_Tp>&, const allocator<_Tp>&)
+    { return false; }
+
+  // Inhibit implicit instantiations for required instantiations,
+  // which are defined via explicit instantiations elsewhere.
+  // NB: This syntax is a GNU extension.
+#if _GLIBCXX_EXTERN_TEMPLATE
+  extern template class allocator<char>;
+  extern template class allocator<wchar_t>;
+#endif
+
+  // Undefine.
+#undef __glibcxx_base_allocator
+
+  // To implement Option 3 of DR 431.
+  template<typename _Alloc, bool = __is_empty(_Alloc)>
+    struct __alloc_swap
+    { static void _S_do_it(_Alloc&, _Alloc&) { } };
+
+  template<typename _Alloc>
+    struct __alloc_swap<_Alloc, false>
+    {
+      static void
+      _S_do_it(_Alloc& __one, _Alloc& __two)
+      {
+       // Precondition: swappable allocators.
+       if (__one != __two)
+         swap(__one, __two);
+      }
+    };
+
+  // Optimize for stateless allocators.
+  template<typename _Alloc, bool = __is_empty(_Alloc)>
+    struct __alloc_neq
+    {
+      static bool
+      _S_do_it(const _Alloc&, const _Alloc&)
+      { return false; }
+    };
+
+  template<typename _Alloc>
+    struct __alloc_neq<_Alloc, false>
+    {
+      static bool
+      _S_do_it(const _Alloc& __one, const _Alloc& __two)
+      { return __one != __two; }
+    };
+
+_GLIBCXX_END_NAMESPACE
+
+#endif