Add non-threadsafe process callbacks

src/driver/process_callback.hpp

@@ -0,0 +1,42 @@
+#pragma once
+#include "functional.hpp"
+
+namespace process_callback
+{
+	enum class type
+	{
+		create,
+		destroy,
+	};
+
+	using callback = void(HANDLE parent_id, HANDLE process_id, type type);
+	using callback_function = std::function<callback>;
+
+	void* add(callback_function callback);
+	void remove(void* handle);
+
+	class scoped_process_callback
+	{
+	public:
+		scoped_process_callback() = default;
+
+		scoped_process_callback(callback_function function)
+			: handle_(add(std::move(function)))
+		{
+		}
+
+		~scoped_process_callback()
+		{
+			remove(this->handle_);
+		}
+
+		scoped_process_callback(scoped_process_callback&& obj) noexcept = delete;
+		scoped_process_callback& operator=(scoped_process_callback&& obj) noexcept = delete;
+
+		scoped_process_callback(const scoped_process_callback& obj) = delete;
+		scoped_process_callback& operator=(const scoped_process_callback& obj) = delete;
+
+	private:
+		void* handle_{};
+	};
+}