xxshared

来自「C语言库函数的原型,有用的拿去」· 代码 · 共 70 行

// xxshared internal header
// NOTE: no include guard

 #ifdef _REF_COUNT_OBJ_CTOR

 #if _NARGS != 0
	template<_CLASS_ARG0>
 #endif /* _NARGS != 0 */

	_Ref_count_obj(_ARG0_A0_REFREF)
		: _Ref_count_base()
		{	// construct
		new ((void *) &_Storage) _Ty(_A0_A1_FWD);
		}
 #endif /* _REF_COUNT_OBJ_CTOR */

 #ifdef _REF_COUNT_OBJ_ALLOC_CTOR

 #if _NARGS != 0
	template<_CLASS_ARG0>
 #endif /* _NARGS != 0 */

	_Ref_count_obj_alloc(_Myalty _Al _C_ARG0_A0_REFREF)
		: _Ref_count_base(), _Myal(_Al)
		{	// construct
		new ((void *) &_Storage) _Ty(_A0_A1_FWD);
		}
 #endif /* _REF_COUNT_OBJ_ALLOC_CTOR */

 #ifdef _MAKE_SHARED
	// TEMPLATE FUNCTION make_shared
template<class _Ty _C_CLASS_ARG0> inline
	shared_ptr<_Ty> make_shared(_ARG0_A0_REFREF)
	{	// make a shared_ptr
	_Ref_count_obj<_Ty> * _Rx = new _Ref_count_obj<_Ty>(_A0_A1_FWD);

	shared_ptr<_Ty> _Ret;
	_Ret._Resetp0(_Rx->_Getptr(), _Rx);
	return (_Ret);
	}

	// TEMPLATE FUNCTION allocate_shared
template<class _Ty,
	class _Alloc _C_CLASS_ARG0> inline
		shared_ptr<_Ty> allocate_shared(
			const _Alloc& _Al_arg _C_ARG0_A0_REFREF)
	{	// make a shared_ptr
	typedef _Ref_count_obj_alloc<_Ty, _Alloc> _Refoa;
	typename _Alloc::template rebind<_Refoa>::other _Alref = _Al_arg;

	_Refoa * _Rx = _Alref.allocate(1);

	_TRY_BEGIN
		new (_Rx) _Refoa(_Al_arg _COMMA0 _A0_A1_FWD);
	_CATCH_ALL
		_Alref.deallocate(_Rx, 1);
	_RERAISE;
	_CATCH_END

	shared_ptr<_Ty> _Ret;
	_Ret._Resetp0(_Rx->_Getptr(), _Rx);
	return (_Ret);
	}
 #endif /* _MAKE_SHARED */

/*
 * Copyright (c) 1992-2009 by P.J. Plauger.  ALL RIGHTS RESERVED.
 * Consult your license regarding permissions and restrictions.
V5.20:0009 */