TD3 II.2 Add useful variable in system.cc for processes counter

code/threads/system.h

@@ -15,6 +15,9 @@
 #include "interrupt.h"
 #include "stats.h"
 #include "timer.h"
+#ifdef CHANGED
+class Semaphore;
+#endif //CHANGED
 
 // Initialization and cleanup routines
 extern void Initialize (int argc, char **argv);	// Initialization,
@@ -39,6 +42,9 @@ extern Machine *machine;	// user program memory and registers
 extern ConsoleDriver *consoledriver; // add console driver
 #include "pageprovider.h"
 extern PageProvider *pageProvider;   // add our page provider
+// count Processes
+extern Semaphore * semProcessesCounter;
+extern int processes;
 #endif //CHANGED
 
 #endif