stl_construct.h File Reference

#include <new>
#include <bits/move.h>
#include <ext/alloc_traits.h>

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Functions
namespace std	_GLIBCXX_VISIBILITY (default)

Detailed Description

This is an internal header file, included by other library headers. Do not attempt to use it directly. {memory}

Function Documentation

namespace std _GLIBCXX_VISIBILITY

(

default

)

Constructs an object in existing memory by invoking an allocated object's constructor with an initializer.

Destroy the object pointed to by a pointer type.

Destroy a range of objects. If the value_type of the object has a trivial destructor, the compiler should optimize all of this away, otherwise the objects' destructors must be invoked.

Destroy a range of objects using the supplied allocator. For nondefault allocators we do not optimize away invocation of destroy() even if _Tp has a trivial destructor.

{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

#if __cplusplus >= 201103L
  template<typename _T1, typename... _Args>
    inline void
    _Construct(_T1* __p, _Args&&... __args)
    { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); }
#else
  template<typename _T1, typename _T2>
    inline void
    _Construct(_T1* __p, const _T2& __value)
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 402. wrong new expression in [some_]allocator::construct
      ::new(static_cast<void*>(__p)) _T1(__value);
    }
#endif

  template<typename _Tp>
    inline void
    _Destroy(_Tp* __pointer)
    { __pointer->~_Tp(); }

  template<bool>
    struct _Destroy_aux
    {
      template<typename _ForwardIterator>
        static void
        __destroy(_ForwardIterator __first, _ForwardIterator __last)
    {
      for (; __first != __last; ++__first)
        std::_Destroy(std::__addressof(*__first));
    }
    };

  template<>
    struct _Destroy_aux<true>
    {
      template<typename _ForwardIterator>
        static void
        __destroy(_ForwardIterator, _ForwardIterator) { }
    };

  template<typename _ForwardIterator>
    inline void
    _Destroy(_ForwardIterator __first, _ForwardIterator __last)
    {
      typedef typename iterator_traits<_ForwardIterator>::value_type
                       _Value_type;
      std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
    __destroy(__first, __last);
    }

  template<typename _ForwardIterator, typename _Allocator>
    void
    _Destroy(_ForwardIterator __first, _ForwardIterator __last,
         _Allocator& __alloc)
    {
      typedef __gnu_cxx::__alloc_traits<_Allocator> __traits;
      for (; __first != __last; ++__first)
    __traits::destroy(__alloc, std::__addressof(*__first));
    }

  template<typename _ForwardIterator, typename _Tp>
    inline void
    _Destroy(_ForwardIterator __first, _ForwardIterator __last,
         allocator<_Tp>&)
    {
      _Destroy(__first, __last);
    }

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std