diff --git a/src/fiber.hpp b/src/fiber.hpp
new file mode 100644
--- /dev/null
+++ b/src/fiber.hpp
@@ -0,0 +1,53 @@
+/* $Id$ */
+
+/** @file fiber.hpp */
+
+#ifndef FIBER_HPP
+#define FIBER_HPP
+
+typedef void (CDECL *FiberFunc)(void *);
+
+class Fiber {
+public:
+	/**
+	 * Switch to this fiber.
+	 */
+	virtual void SwitchToFiber() = 0;
+
+	/**
+	 * Exit a fiber.
+	 */
+	virtual void Exit() = 0;
+
+	/**
+	 * Check if a fiber is running.
+	 */
+	virtual bool IsRunning() = 0;
+
+	/**
+	 * Get the 'param' data of the Fiber.
+	 */
+	virtual void *GetFiberData() = 0;
+
+	/**
+	 * Virtual Destructor to mute warnings.
+	 */
+	virtual ~Fiber() {};
+
+	/**
+	 * Create a new fiber, calling proc(param) when running.
+	 */
+	static Fiber *New(FiberFunc proc, void *param);
+
+	/**
+	 * Attach a current thread to a new fiber.
+	 */
+	static Fiber *AttachCurrent(void *param);
+
+	/**
+	 * Get the 'param' data of the current active Fiber.
+	 */
+	static void *GetCurrentFiberData();
+};
+
+#endif /* FIBER_HPP */