LCOV - code coverage report
Current view: directory - tools/gcc-4.5/include/c++/4.5.2/bits - stl_construct.h (source / functions) Found Hit Coverage
Test: app.info Lines: 20 16 80.0 %
Date: 2012-06-02 Functions: 399 85 21.3 %

       1                 : // nonstandard construct and destroy functions -*- C++ -*-
       2                 : 
       3                 : // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
       4                 : // Free Software Foundation, Inc.
       5                 : //
       6                 : // This file is part of the GNU ISO C++ Library.  This library is free
       7                 : // software; you can redistribute it and/or modify it under the
       8                 : // terms of the GNU General Public License as published by the
       9                 : // Free Software Foundation; either version 3, or (at your option)
      10                 : // any later version.
      11                 : 
      12                 : // This library is distributed in the hope that it will be useful,
      13                 : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      14                 : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15                 : // GNU General Public License for more details.
      16                 : 
      17                 : // Under Section 7 of GPL version 3, you are granted additional
      18                 : // permissions described in the GCC Runtime Library Exception, version
      19                 : // 3.1, as published by the Free Software Foundation.
      20                 : 
      21                 : // You should have received a copy of the GNU General Public License and
      22                 : // a copy of the GCC Runtime Library Exception along with this program;
      23                 : // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      24                 : // <http://www.gnu.org/licenses/>.
      25                 : 
      26                 : /*
      27                 :  *
      28                 :  * Copyright (c) 1994
      29                 :  * Hewlett-Packard Company
      30                 :  *
      31                 :  * Permission to use, copy, modify, distribute and sell this software
      32                 :  * and its documentation for any purpose is hereby granted without fee,
      33                 :  * provided that the above copyright notice appear in all copies and
      34                 :  * that both that copyright notice and this permission notice appear
      35                 :  * in supporting documentation.  Hewlett-Packard Company makes no
      36                 :  * representations about the suitability of this software for any
      37                 :  * purpose.  It is provided "as is" without express or implied warranty.
      38                 :  *
      39                 :  *
      40                 :  * Copyright (c) 1996,1997
      41                 :  * Silicon Graphics Computer Systems, Inc.
      42                 :  *
      43                 :  * Permission to use, copy, modify, distribute and sell this software
      44                 :  * and its documentation for any purpose is hereby granted without fee,
      45                 :  * provided that the above copyright notice appear in all copies and
      46                 :  * that both that copyright notice and this permission notice appear
      47                 :  * in supporting documentation.  Silicon Graphics makes no
      48                 :  * representations about the suitability of this software for any
      49                 :  * purpose.  It is provided "as is" without express or implied warranty.
      50                 :  */
      51                 : 
      52                 : /** @file stl_construct.h
      53                 :  *  This is an internal header file, included by other library headers.
      54                 :  *  You should not attempt to use it directly.
      55                 :  */
      56                 : 
      57                 : #ifndef _STL_CONSTRUCT_H
      58                 : #define _STL_CONSTRUCT_H 1
      59                 : 
      60                 : #include <new>
      61                 : #include <bits/move.h>
      62                 : 
      63                 : _GLIBCXX_BEGIN_NAMESPACE(std)
      64                 : 
      65                 :   /**
      66                 :    * Constructs an object in existing memory by invoking an allocated
      67                 :    * object's constructor with an initializer.
      68                 :    */
      69                 :   template<typename _T1, typename _T2>
      70                 :     inline void
      71                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
      72                 :     // Allow perfect forwarding
      73         1075764 :     _Construct(_T1* __p, _T2&& __value)
      74                 : #else
      75                 :     _Construct(_T1* __p, const _T2& __value)
      76                 : #endif
      77                 :     {
      78                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
      79                 :       // 402. wrong new expression in [some_]allocator::construct
      80         1075764 :       ::new(static_cast<void*>(__p)) _T1(_GLIBCXX_FORWARD(_T2, __value));
      81         1075764 :     }
      82                 : 
      83                 :   /**
      84                 :    * Destroy the object pointed to by a pointer type.
      85                 :    */
      86                 :   template<typename _Tp>
      87                 :     inline void
      88         1302364 :     _Destroy(_Tp* __pointer)
      89         1302364 :     { __pointer->~_Tp(); }
      90                 : 
      91                 :   template<bool>
      92                 :     struct _Destroy_aux
      93                 :     {
      94                 :       template<typename _ForwardIterator>
      95                 :         static void
      96           50526 :         __destroy(_ForwardIterator __first, _ForwardIterator __last)
      97                 :         {
      98         1352890 :           for (; __first != __last; ++__first)
      99         1302364 :             std::_Destroy(&*__first);
     100           50526 :         }
     101                 :     };
     102                 : 
     103                 :   template<>
     104                 :     struct _Destroy_aux<true>
     105                 :     {
     106                 :       template<typename _ForwardIterator>
     107                 :         static void
     108         2918321 :         __destroy(_ForwardIterator, _ForwardIterator) { }
     109                 :     };
     110                 : 
     111                 :   /**
     112                 :    * Destroy a range of objects.  If the value_type of the object has
     113                 :    * a trivial destructor, the compiler should optimize all of this
     114                 :    * away, otherwise the objects' destructors must be invoked.
     115                 :    */
     116                 :   template<typename _ForwardIterator>
     117                 :     inline void
     118         2968847 :     _Destroy(_ForwardIterator __first, _ForwardIterator __last)
     119                 :     {
     120                 :       typedef typename iterator_traits<_ForwardIterator>::value_type
     121                 :                        _Value_type;
     122         2968847 :       std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
     123                 :         __destroy(__first, __last);
     124         2968847 :     }
     125                 : 
     126                 :   /**
     127                 :    * Destroy a range of objects using the supplied allocator.  For
     128                 :    * nondefault allocators we do not optimize away invocation of 
     129                 :    * destroy() even if _Tp has a trivial destructor.
     130                 :    */
     131                 : 
     132                 :   template <typename _Tp> class allocator;
     133                 : 
     134                 :   template<typename _ForwardIterator, typename _Allocator>
     135                 :     void
     136               0 :     _Destroy(_ForwardIterator __first, _ForwardIterator __last,
     137                 :              _Allocator& __alloc)
     138                 :     {
     139               0 :       for (; __first != __last; ++__first)
     140               0 :         __alloc.destroy(&*__first);
     141               0 :     }
     142                 : 
     143                 :   template<typename _ForwardIterator, typename _Tp>
     144                 :     inline void
     145         2968847 :     _Destroy(_ForwardIterator __first, _ForwardIterator __last,
     146                 :              allocator<_Tp>&)
     147                 :     {
     148         2968847 :       _Destroy(__first, __last);
     149         2968847 :     }
     150                 : 
     151                 : _GLIBCXX_END_NAMESPACE
     152                 : 
     153                 : #endif /* _STL_CONSTRUCT_H */
     154                 : 

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