[IMP] Moved source code into dev/ folder.

Signed-off-by: Amlal EL Mahrouss <amlalelmahrouss@icloud.com>

1 files changed, 130 insertions, 0 deletions

diff --git a/dev/Kernel/KernelKit/MP.hxx b/dev/Kernel/KernelKit/MP.hxx
new file mode 100644
index 00000000..bc94102e
--- /dev/null
+++ b/dev/Kernel/KernelKit/MP.hxx
@@ -0,0 +1,130 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+
+#ifndef __INC_MP_MANAGER_HPP__
+#define __INC_MP_MANAGER_HPP__
+
+#include <ArchKit/ArchKit.hxx>
+#include <CompilerKit/CompilerKit.hxx>
+#include <NewKit/Ref.hxx>
+
+/// @note Last Rev Sun 28 Jul CET 2024
+/// @note Last Rev Thu, Aug  1, 2024  9:07:38 AM
+
+#define cMaxHWThreads (8U)
+
+namespace Kernel
+{
+	class HardwareThread;
+	class HardwareThreadScheduler;
+
+	using ThreadID = UInt32;
+
+	enum ThreadKind
+	{
+		kHartSystemReserved, // System reserved thread, well user can't use it
+		kHartStandard,		 // user thread, cannot be used by kernel
+		kHartFallback,		 // fallback thread, cannot be used by user if not clear or
+							 // used by kernel.
+		kHartBoot,			 // The core we booted from, the mama.
+		kInvalidHart,
+		kHartCount,
+	};
+
+	typedef enum ThreadKind SmThreadKind;
+	typedef ThreadID		SmThreadID;
+
+	///
+	/// \name HardwareThread
+	/// \brief Abstraction over the CPU's core, used to run processes or threads.
+	///
+
+	class HardwareThread final
+	{
+	public:
+		explicit HardwareThread();
+		~HardwareThread();
+
+	public:
+		NEWOS_COPY_DEFAULT(HardwareThread)
+
+	public:
+		operator bool();
+
+	public:
+		void Wake(const bool wakeup = false) noexcept;
+		void Busy(const bool busy = false) noexcept;
+
+	public:
+		bool Switch(HAL::StackFrame* stack);
+		bool IsWakeup() noexcept;
+
+	public:
+		HAL::StackFrame*  StackFrame() noexcept;
+		const ThreadKind& Kind() noexcept;
+		bool			  IsBusy() noexcept;
+		const ThreadID&	  ID() noexcept;
+
+	private:
+		HAL::StackFrame* fStack{nullptr};
+		ThreadKind		 fKind{ThreadKind::kInvalidHart};
+		ThreadID		 fID{0};
+		ProcessID		 fSourcePID{-1};
+		bool			 fWakeup{false};
+		bool			 fBusy{false};
+
+	private:
+		friend class HardwareThreadScheduler;
+	};
+
+	///
+	/// \name HardwareThreadScheduler
+	/// \brief Class to manage the thread scheduling.
+	///
+
+	class HardwareThreadScheduler final
+	{
+	private:
+		explicit HardwareThreadScheduler();
+
+	public:
+		~HardwareThreadScheduler();
+		NEWOS_COPY_DEFAULT(HardwareThreadScheduler);
+
+	public:
+		bool			   Switch(HAL::StackFramePtr the);
+		HAL::StackFramePtr Leak() noexcept;
+
+	public:
+		Ref<HardwareThread*> operator[](const SizeT& idx);
+		bool				 operator!() noexcept;
+		operator bool() noexcept;
+
+	public:
+		/// @brief Shared instance of the MP Manager.
+		/// @return the reference to the mp manager class.
+		static Ref<HardwareThreadScheduler> The();
+
+	public:
+		/// @brief Returns the amount of threads present in the system.
+		/// @returns SizeT the amount of cores present.
+		SizeT Count() noexcept;
+
+	private:
+		Array<HardwareThread, cMaxHWThreads> fThreadList;
+		ThreadID						 fCurrentThread{0};
+	};
+
+	/// @brief wakes up thread.
+	/// wakes up thread from hang.
+	Void mp_wakeup_thread(HAL::StackFramePtr stack);
+
+	/// @brief makes thread sleep.
+	/// hooks and hangs thread to prevent code from executing.
+	Void mp_hang_thread(HAL::StackFramePtr stack);
+} // namespace Kernel
+
+#endif // !__INC_MP_MANAGER_HPP__