C++ (Cpp) _M_allocate_and_copy Examples

Example #1

File: _vector.c Project: jiayuehua/STLport

void 
__vector__<_Tp, _Alloc>::_M_assign_aux(_ForwardIter __first, _ForwardIter __last,
				   forward_iterator_tag) {
  size_type __len = 0;
  distance(__first, __last, __len);
    
  if (__len > capacity()) {
    iterator __tmp = _M_allocate_and_copy(__len, __first, __last);
    _Destroy(_M_start, _M_finish);
    _M_end_of_storage.deallocate(_M_start, _M_end_of_storage._M_data - _M_start);
    _M_start = __tmp;
    _M_end_of_storage._M_data = _M_finish = _M_start + __len;
  }
  else if (size() >= __len) {
    iterator __new_finish = copy(__first, __last, _M_start);
    _Destroy(__new_finish, _M_finish);
    _M_finish = __new_finish;
  }
  else {
    _ForwardIter __mid = __first;
    advance(__mid, size());
    copy(__first, __mid, _M_start);
    _M_finish = uninitialized_copy(__mid, __last, _M_finish);
  }
}

Example #2

File: _vector.c Project: Arkshine/NS

void 
__vector__<_Tp, _Alloc>::reserve(size_type __n) {
  if (capacity() < __n) {
    const size_type __old_size = size();
    pointer __tmp;
    if (this->_M_start) {
      __tmp = _M_allocate_and_copy(__n, this->_M_start, this->_M_finish);
      _M_clear();
    } else {
      __tmp = this->_M_end_of_storage.allocate(__n);
    }
    _M_set(__tmp, __tmp + __old_size, __tmp + __n);
  }
}

Example #3

File: _vector.c Project: RenEvo/dead6

void _VECTOR_IMPL<_Tp, _Alloc>::reserve(size_type __n) {
  if (capacity() < __n) {
    if (max_size() < __n) {
      this->_M_throw_length_error();
    }

    const size_type __old_size = size();
    pointer __tmp;
    if (this->_M_start) {
      __tmp = _M_allocate_and_copy(__n, this->_M_start, this->_M_finish);
      _M_clear();
    } else {
      __tmp = this->_M_end_of_storage.allocate(__n);
    }
    _M_set(__tmp, __tmp + __old_size, __tmp + __n);
  }
}

Example #4

File: _vector.c Project: jiayuehua/STLport

void 
__vector__<_Tp, _Alloc>::reserve(__size_type__ __n) {
  if (capacity() < __n) {
    const size_type __old_size = size();
    pointer __tmp;
    if (_M_start) {
      __tmp = _M_allocate_and_copy(__n, _M_start, _M_finish);
      _Destroy(_M_start, _M_finish);
      _M_end_of_storage.deallocate(_M_start, _M_end_of_storage._M_data - _M_start);
     } else {
      __tmp = _M_end_of_storage.allocate(__n);
    }
    _M_start = __tmp;
    _M_finish = __tmp + __old_size;
    _M_end_of_storage._M_data = _M_start + __n;
  }
}

Example #5

File: _vector.c Project: RenEvo/dead6

_VECTOR_IMPL<_Tp,_Alloc>& _VECTOR_IMPL<_Tp,_Alloc>::operator=(const _VECTOR_IMPL<_Tp, _Alloc>& __x) {
  if (&__x != this) {
    const size_type __xlen = __x.size();
    if (__xlen > capacity()) {
      pointer __tmp = _M_allocate_and_copy(__xlen, __CONST_CAST(const_pointer, __x._M_start)+0, __CONST_CAST(const_pointer, __x._M_finish)+0);
      _M_clear();
      this->_M_start = __tmp;
      this->_M_end_of_storage._M_data = this->_M_start + __xlen;
    } else if (size() >= __xlen) {
      pointer __i = __copy_ptrs(__CONST_CAST(const_pointer, __x._M_start)+0, __CONST_CAST(const_pointer, __x._M_finish)+0, this->_M_start, _TrivialAss());
      _STLP_STD::_Destroy_Range(__i, this->_M_finish);
    } else {
      __copy_ptrs(__CONST_CAST(const_pointer, __x._M_start), __CONST_CAST(const_pointer, __x._M_start) + size(), this->_M_start, _TrivialAss());
      __uninitialized_copy(__CONST_CAST(const_pointer, __x._M_start) + size(), 
                           __CONST_CAST(const_pointer, __x._M_finish)+0, this->_M_finish, _TrivialUCpy());
    }
    this->_M_finish = this->_M_start + __xlen;
  }
  return *this;
}

Example #6

File: _vector.c Project: Arkshine/NS

__vector__<_Tp,_Alloc>& 
__vector__<_Tp,_Alloc>::operator=(const __vector__<_Tp, _Alloc>& __x)
{
  if (&__x != this) {
    const size_type __xlen = __x.size();
    if (__xlen > capacity()) {
      pointer __tmp = _M_allocate_and_copy(__xlen, (const_pointer)__x._M_start+0, (const_pointer)__x._M_finish+0);
      _M_clear();
      this->_M_start = __tmp;
      this->_M_end_of_storage._M_data = this->_M_start + __xlen;
    }
    else if (size() >= __xlen) {
      pointer __i = __copy_ptrs((const_pointer)__x._M_start+0, (const_pointer)__x._M_finish+0, (pointer)this->_M_start, _TrivialAss());
      _STLP_STD::_Destroy(__i, this->_M_finish);
    }
    else {
      __copy_ptrs((const_pointer)__x._M_start, (const_pointer)__x._M_start + size(), (pointer)this->_M_start, _TrivialAss());
      __uninitialized_copy((const_pointer)__x._M_start + size(), (const_pointer)__x._M_finish+0, this->_M_finish, _IsPODType());
    }
    this->_M_finish = this->_M_start + __xlen;
  }
  return *this;
}