1 files changed, 74 insertions, 0 deletions
diff --git a/dev/kernel/src/BinaryMutex.cc b/dev/kernel/src/BinaryMutex.cc
new file mode 100644
index 00000000..4fdaa8f4
--- /dev/null
+++ b/dev/kernel/src/BinaryMutex.cc
@@ -0,0 +1,74 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#include <KernelKit/UserProcessScheduler.h>
+#include <KernelKit/BinaryMutex.h>
+
+namespace NeOS
+{
+	/***********************************************************************************/
+	/// @brief Unlocks the semaphore.
+	/***********************************************************************************/
+	Bool BinaryMutex::Unlock() noexcept
+	{
+		if (fLockingProcess)
+		{
+			fLockingProcess		   = UserProcess();
+			fLockingProcess.Status = ProcessStatusKind::kFrozen;
+			return Yes;
+		}
+
+		return No;
+	}
+
+	/***********************************************************************************/
+	/// @brief Locks process in the semaphore.
+	/***********************************************************************************/
+	Bool BinaryMutex::Lock(UserProcess& process)
+	{
+		if (!process || fLockingProcess)
+			return No;
+
+		fLockingProcess = process;
+
+		return Yes;
+	}
+
+	/***********************************************************************************/
+	/// @brief Checks if process is locked.
+	/***********************************************************************************/
+	Bool BinaryMutex::IsLocked() const
+	{
+		return fLockingProcess.Status == ProcessStatusKind::kRunning;
+	}
+
+	/***********************************************************************************/
+	/// @brief Try lock or wait.
+	/***********************************************************************************/
+	Bool BinaryMutex::LockOrWait(UserProcess& process, TimerInterface* timer)
+	{
+		if (timer == nullptr)
+			return No;
+
+		this->Lock(process);
+
+		timer->Wait();
+
+		return this->Lock(process);
+	}
+
+	/***********************************************************************************/
+	/// @brief Wait for process **sec** until we check if it's free.
+	/// @param sec seconds.
+	/***********************************************************************************/
+	BOOL BinaryMutex::WaitForProcess(const Int16& sec) noexcept
+	{
+		HardwareTimer hw_timer(rtl_seconds(sec));
+		hw_timer.Wait();
+
+		return !this->IsLocked();
+	}
+} // namespace NeOS