tmp/tmpssmpebbq/{from.md → to.md}
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| 1 |
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#### Class template `hazard_pointer_obj_base` <a id="saferecl.hp.base">[[saferecl.hp.base]]</a>
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``` cpp
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namespace std {
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template<class T, class D = default_delete<T>>
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class hazard_pointer_obj_base {
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public:
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void retire(D d = D()) noexcept;
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protected:
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hazard_pointer_obj_base() = default;
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hazard_pointer_obj_base(const hazard_pointer_obj_base&) = default;
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hazard_pointer_obj_base(hazard_pointer_obj_base&&) = default;
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hazard_pointer_obj_base& operator=(const hazard_pointer_obj_base&) = default;
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hazard_pointer_obj_base& operator=(hazard_pointer_obj_base&&) = default;
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~hazard_pointer_obj_base() = default;
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private:
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D deleter; // exposition only
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};
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}
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```
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`D` shall be a function object type [[func.require]] for which, given a
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value `d` of type `D` and a value `ptr` of type `T*`, the expression
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`d(ptr)` is valid.
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The behavior of a program that adds specializations for
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`hazard_pointer_obj_base` is undefined.
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`D` shall meet the requirements for *Cpp17DefaultConstructible* and
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*Cpp17MoveAssignable*.
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`T` may be an incomplete type. It shall be complete before any member of
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the resulting specialization of `hazard_pointer_obj_base` is referenced.
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``` cpp
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void retire(D d = D()) noexcept;
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```
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*Mandates:* `T` is a hazard-protectable type.
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*Preconditions:* `*this` is a base class subobject of an object `x` of
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type `T`. `x` is not retired. Move-assigning `d` to `deleter` does not
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exit via an exception.
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*Effects:* Move-assigns `d` to `deleter`, thereby setting it as the
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deleter of `x`, then retires `x`. May reclaim possibly-reclaimable
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objects.
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