110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
/* **************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* weak_ptr.ipp :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: maldavid <kbz_8.dev@akel-engine.com> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/01/20 12:58:44 by maldavid #+# #+# */
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/* Updated: 2024/01/20 12:58:44 by maldavid ### ########.fr */
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/* */
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/* **************************************************************************** */
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namespace unstd
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{
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template <typename T>
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WeakPtr<T>::WeakPtr() : _ref(NULL), _ptr(NULL) {}
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template <typename T>
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WeakPtr<T>::WeakPtr(const WeakPtr<T>& rhs) : _ref(rhs._ref), _ptr(rhs._ptr)
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{
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if(_ptr && _ref)
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_ref->weak++;
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}
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template <typename T>
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WeakPtr<T>::WeakPtr(const SharedPtr<T>& shared) : _ref(shared._ref), _ptr(shared._ptr)
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{
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if(_ptr && _ref)
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_ref->weak++;
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}
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template <typename T>
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WeakPtr<T>& WeakPtr<T>::operator=(const WeakPtr<T>& rhs)
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{
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if(_ptr == rhs._ptr)
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return *this;
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safeRelease();
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_ptr = rhs._ptr;
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_ref = rhs._ref;
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return *this;
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}
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template <typename T>
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WeakPtr<T>& WeakPtr<T>::operator=(const SharedPtr<T>& shared)
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{
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if(_ptr == shared._ptr)
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return *this;
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safeRelease();
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_ptr = shared._ptr;
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_ref = shared._ref;
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_ref->weak++;
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return *this;
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}
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template <typename T>
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void WeakPtr<T>::reset()
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{
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safeRelease();
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_ptr = NULL;
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_ref = NULL;
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}
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template <typename T>
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void WeakPtr<T>::swap(WeakPtr<T>& rhs)
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{
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T* tmptr = _ptr;
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bits::RefCount* tmpref = _ref;
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_ptr = rhs._ptr;
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_ref = rhs._ref;
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rhs._ptr = tmptr;
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rhs._ref = tmpref;
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}
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template <typename T>
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bool WeakPtr<T>::expired() const
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{
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return (_ptr && _ref && _ref->shared > 0);
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}
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template <typename T>
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SharedPtr<T> WeakPtr<T>::lock() const
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{
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return (expired() ? SharedPtr<T>() : SharedPtr<T>(_ptr));
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}
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template <typename T>
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void WeakPtr<T>::safeRelease()
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{
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if(_ref == NULL)
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return;
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_ref->weak--;
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if(_ref && _ref->shared <= 0)
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{
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delete _ptr;
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_ptr = NULL;
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delete _ref;
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_ref = NULL;
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}
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}
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template <typename T>
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WeakPtr<T>::~WeakPtr()
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{
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if(_ptr && _ref && _ref->shared > 0)
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safeRelease();
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}
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}
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