Add util::mutexed<T>

libs/util/include/psemek/util/mutexed.hpp

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <mutex>
+#include <utility>
+
+namespace psemek::util
+{
+
+	template <typename T, typename Mutex = std::mutex>
+	struct mutexed
+	{
+		mutexed() = default;
+
+		mutexed(mutexed const &) = delete;
+		mutexed(mutexed &&) = delete;
+
+		mutexed & operator = (mutexed const &) = delete;
+		mutexed & operator = (mutexed &&) = delete;
+
+		mutexed(T && value)
+			: value_(std::move(value))
+		{}
+
+		template <typename ... Args>
+		mutexed(std::in_place_t, Args && ... args)
+			: value_(std::forward<Args>(args)...)
+		{}
+
+		T load() const
+		{
+			std::lock_guard lock{mutex_};
+			return value_;
+		}
+
+		void store(T && new_value)
+		{
+			std::lock_guard lock{mutex_};
+			value_ = std::move(new_value);
+		}
+
+		T exchange(T && new_value) const
+		{
+			std::lock_guard lock{mutex_};
+			std::swap(value_, new_value);
+			return new_value;
+		}
+
+	private:
+		T value_;
+		mutable Mutex mutex_;
+	};
+
+}