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WIP snapshot: std::get_deleter experiment.
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@ -60,8 +60,12 @@ struct guarded_operator_call {
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std::shared_ptr<bool> flag_ptr;
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explicit guarded_operator_call(std::shared_ptr<bool> armed_flag_ptr)
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: flag_ptr{armed_flag_ptr} {}
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virtual void operator()(void *) { std::terminate(); };
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virtual ~guarded_operator_call() = default;
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virtual void operator()(void *) = 0;
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virtual ~guarded_operator_call() = default;
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guarded_operator_call(guarded_operator_call &&) = default;
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guarded_operator_call(guarded_operator_call &) = delete;
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guarded_operator_call &operator=(guarded_operator_call &&) = delete;
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guarded_operator_call &operator=(const guarded_operator_call &) = delete;
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};
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template <typename T>
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@ -111,11 +115,6 @@ struct guarded_custom_deleter : guarded_operator_call {
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if (*flag_ptr)
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D()((T *) raw_ptr);
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}
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guarded_custom_deleter(guarded_custom_deleter &&) = default;
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guarded_custom_deleter(guarded_custom_deleter &) = delete;
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guarded_custom_deleter &operator=(guarded_custom_deleter &&) = delete;
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guarded_custom_deleter &operator=(const guarded_custom_deleter &) = delete;
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};
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template <typename T>
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@ -307,11 +306,17 @@ struct smart_holder {
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smart_holder hld;
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hld.rtti_uqp_del = &typeid(D);
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hld.vptr_is_using_builtin_delete = is_std_default_delete<T>(*hld.rtti_uqp_del);
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guarded_operator_call *vptr_del = nullptr;
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if (hld.vptr_is_using_builtin_delete) {
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hld.vptr.reset(unq_ptr.get(), make_guarded_builtin_delete<T>(true));
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hld.vptr.reset(unq_ptr.get(),
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guarded_builtin_delete<T>(hld.vptr_deleter_armed_flag_ptr));
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vptr_del = std::get_deleter<guarded_builtin_delete<T>>(hld.vptr);
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} else {
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hld.vptr.reset(unq_ptr.get(), make_guarded_custom_deleter<T, D>(true));
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hld.vptr.reset(unq_ptr.get(),
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guarded_custom_deleter<T, D>(hld.vptr_deleter_armed_flag_ptr));
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vptr_del = std::get_deleter<guarded_custom_deleter<T, D>>(hld.vptr);
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}
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assert(vptr_del != nullptr);
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unq_ptr.release();
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hld.is_populated = true;
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return hld;
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