LCOV - app.info - /tools/gcc-4.5/include/c++/4.5.2/ext/new_allocator.h

LCOV - code coverage report
| Current view: | directory - tools/gcc-4.5/include/c++/4.5.2/ext - new_allocator.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 16 | 15 | 93.8 %
| Date: | 2012-04-21 | Functions: | 1077 | 303 | 28.1 %

           1                 : // Allocator that wraps operator new -*- C++ -*-
           2                 :
           3                 : // Copyright (C) 2001, 2002, 2003, 2004, 2005, 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                 : /** @file ext/new_allocator.h
          27                 :  *  This file is a GNU extension to the Standard C++ Library.
          28                 :  */
          29                 :
          30                 : #ifndef _NEW_ALLOCATOR_H
          31                 : #define _NEW_ALLOCATOR_H 1
          32                 :
          33                 : #include <new>
          34                 : #include <bits/functexcept.h>
          35                 : #include <bits/move.h>
          36                 :
          37                 : _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
          38                 :
          39                 :   using std::size_t;
          40                 :   using std::ptrdiff_t;
          41                 :
          42                 :   /**
          43                 :    *  @brief  An allocator that uses global new, as per [20.4].
          44                 :    *  @ingroup allocators
          45                 :    *
          46                 :    *  This is precisely the allocator defined in the C++ Standard.
          47                 :    *    - all allocation calls operator new
          48                 :    *    - all deallocation calls operator delete
          49                 :    */
          50                 :   template<typename _Tp>
          51                 :     class new_allocator
          52                 :     {
          53                 :     public:
          54                 :       typedef size_t     size_type;
          55                 :       typedef ptrdiff_t  difference_type;
          56                 :       typedef _Tp*       pointer;
          57                 :       typedef const _Tp* const_pointer;
          58                 :       typedef _Tp&       reference;
          59                 :       typedef const _Tp& const_reference;
          60                 :       typedef _Tp        value_type;
          61                 :
          62                 :       template<typename _Tp1>
          63                 :         struct rebind
          64                 :         { typedef new_allocator<_Tp1> other; };
          65                 :
          66         5755507 :       new_allocator() throw() { }
          67                 :
          68         7030476 :       new_allocator(const new_allocator&) throw() { }
          69                 :
          70                 :       template<typename _Tp1>
          71                 :         new_allocator(const new_allocator<_Tp1>&) throw() { }
          72                 :
          73        15844213 :       ~new_allocator() throw() { }
          74                 :
          75                 :       pointer
          76                 :       address(reference __x) const { return &__x; }
          77                 :
          78                 :       const_pointer
          79                 :       address(const_reference __x) const { return &__x; }
          80                 :
          81                 :       // NB: __n is permitted to be 0.  The C++ standard says nothing
          82                 :       // about what the return value is when __n == 0.
          83                 :       pointer
          84        19161035 :       allocate(size_type __n, const void* = 0)
          85                 :       {
          86        19161035 :         if (__n > this->max_size())
          87               0 :           std::__throw_bad_alloc();
          88                 :
          89        19305640 :         return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp)));
          90                 :       }
          91                 :
          92                 :       // __p is not permitted to be a null pointer.
          93                 :       void
          94        27738801 :       deallocate(pointer __p, size_type)
          95        27738801 :       { ::operator delete(__p); }
          96                 :
          97                 :       size_type
          98        23697322 :       max_size() const throw()
          99        23697322 :       { return size_t(-1) / sizeof(_Tp); }
         100                 :
         101                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
         102                 :       // 402. wrong new expression in [some_] allocator::construct
         103                 :       void
         104         9900762 :       construct(pointer __p, const _Tp& __val)
         105         9900762 :       { ::new((void *)__p) _Tp(__val); }
         106                 :
         107                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
         108                 :       template<typename... _Args>
         109                 :         void
         110        16805871 :         construct(pointer __p, _Args&&... __args)
         111        16805871 :         { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); }
         112                 : #endif
         113                 :
         114                 :       void
         115        25400325 :       destroy(pointer __p) { __p->~_Tp(); }
         116                 :     };
         117                 :
         118                 :   template<typename _Tp>
         119                 :     inline bool
         120                 :     operator==(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
         121                 :     { return true; }
         122                 :
         123                 :   template<typename _Tp>
         124                 :     inline bool
         125                 :     operator!=(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
         126                 :     { return false; }
         127                 :
         128                 : _GLIBCXX_END_NAMESPACE
         129                 :
         130                 : #endif

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