Handout

kernel/user/app1/appl.cc

@@ -0,0 +1,42 @@
+// vim: set noet ts=4 sw=4:
+
+#include "appl.h"
+
+#include "../../arch/core.h"
+#include "../../arch/system.h"
+#include "../../debug/output.h"
+#include "../../device/textstream.h"
+#include "../../interrupt/guard.h"
+#include "../../sync/semaphore.h"
+#include "../../thread/scheduler.h"
+extern Semaphore koutsem;
+extern TextStream kout;
+
+extern Application apps[];
+
+void Application::action() {  // NOLINT
+
+	// Thread 1 may be an auxiliary thread
+	unsigned id = 0;
+	while (&apps[id++] != this);
+	for (unsigned i = 0;; ++i) {
+		// Make sure that we can use kout exclusively due to the hardware cursor
+		// otherwise we'd get a word jumble
+		koutsem.p(Guard::enter().vault());
+		kout.setPos(0U, id);
+		kout << i;
+		kout.flush();
+		koutsem.v(Guard::enter().vault());
+		// XXX: Doing this (the first time) in TASK 16 breaks all scheduling
+		if (i == 10000) {
+			if (id % 2 == 1) {
+				Guard::enter().vault().scheduler.kill(&apps[id - 1]);
+			}
+		}
+		Guard::enter().vault().scheduler.resume();
+		if (id > 1) {
+			Guarded g = Guard::enter();
+			g.vault().bellringer.sleep(g.vault(), id * id * 10);
+		}
+	}
+}

kernel/user/app1/appl.h

@@ -0,0 +1,32 @@
+// vim: set noet ts=4 sw=4:
+
+/*! \file
+ *  \brief Enthält die Klasse Application
+ */
+
+#pragma once
+#include "../../thread/thread.h"
+#include "../../types.h"
+
+//! \brief Test application
+//!
+//! \note Any class derived from Thread defines an application for StuBS.
+//!
+class Application : public Thread {
+	// Prevent copies and assignments
+	Application(const Application&) = delete;
+	Application& operator=(const Application&) = delete;
+
+   public:
+	Application(Application&&) = delete;
+
+	/*! \brief Constructor
+	 *
+	 */
+	Application() {}
+
+	/*! \brief Contains the application code.
+	 *
+	 */
+	void action() override;
+};