From 55e72222ba09efd7b974abdb005c720e0cb3d9a8 Mon Sep 17 00:00:00 2001
From: GeorgH93 <git@georgh93.eu>
Date: Fri, 1 Jan 2021 09:11:22 +0100
Subject: [PATCH] Add MutexProtectedObject helper class

---
 openVulkanoCpp/Base/MutexProtectedObject.hpp | 63 ++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 openVulkanoCpp/Base/MutexProtectedObject.hpp

diff --git a/openVulkanoCpp/Base/MutexProtectedObject.hpp b/openVulkanoCpp/Base/MutexProtectedObject.hpp
new file mode 100644
index 0000000..c6561fa
--- /dev/null
+++ b/openVulkanoCpp/Base/MutexProtectedObject.hpp
@@ -0,0 +1,63 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <mutex>
+
+namespace openVulkanoCpp
+{
+	template<typename T>
+	class MutexProtectedObject
+	{
+		T object;
+		std::mutex mutex;
+
+	public:
+		class Accessor
+		{
+			std::unique_lock<std::mutex> lock;
+			T& ref;
+
+		public:
+			Accessor(std::mutex& m, T& obj)
+					: lock(m), ref(obj)
+			{}
+
+			T* operator->() { return &ref; }
+
+			T& Get() { return ref; }
+		};
+
+		MutexProtectedObject() = default;
+
+		MutexProtectedObject(const T& initValue) : object(initValue) {}
+
+		template<typename... Args>
+		MutexProtectedObject(Args&&... args)
+				: object(std::forward<Args>(args)...)
+		{}
+
+		MutexProtectedObject(const MutexProtectedObject&) = delete;
+
+		Accessor Access()
+		{
+			return Accessor(mutex, object);
+		}
+
+		MutexProtectedObject& operator =(const T& value)
+		{
+			Accessor accessor = Access();
+			object = value;
+		}
+
+		operator T()
+		{
+			Accessor accessor = Access();
+			return accessor.Get();
+		}
+	};
+}