1 files changed, 42 insertions, 0 deletions
diff --git a/Kernel/KernelKit/Semaphore.hpp b/Kernel/KernelKit/Semaphore.hpp
new file mode 100644
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--- /dev/null
+++ b/Kernel/KernelKit/Semaphore.hpp
@@ -0,0 +1,42 @@
+/* -------------------------------------------
+
+    Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#pragma once
+
+#include <NewKit/Defines.hpp>
+#include <CompilerKit/CompilerKit.hxx>
+
+namespace NewOS
+{
+	class ProcessHeader;
+
+	typedef ProcessHeader* ProcessHeaderRef;
+
+	/// @brief Access control class, which locks a task until one is done.
+	class Semaphore final
+	{
+	public:
+		explicit Semaphore() = default;
+		~Semaphore()		 = default;
+
+	public:
+		bool IsLocked() const;
+		bool Unlock() noexcept;
+
+	public:
+		void Sync() noexcept;
+
+	public:
+		bool Lock(ProcessHeader* process);
+		bool LockOrWait(ProcessHeader* process, const Int64& seconds);
+
+	public:
+		NEWOS_COPY_DEFAULT(Semaphore);
+
+	private:
+		ProcessHeaderRef fLockingProcess{nullptr};
+	};
+} // namespace NewOS