init: init nachos hw01, should pass jenkins os_group_20_hw job but fail on os_group_20_ta job

code/lib/utility.h

@@ -0,0 +1,38 @@
+// utility.h 
+//	Miscellaneous useful definitions.
+//
+// Copyright (c) 1992-1996 The Regents of the University of California.
+// All rights reserved.  See copyright.h for copyright notice and limitation 
+// of liability and disclaimer of warranty provisions.
+
+#ifndef UTILITY_H
+#define UTILITY_H
+
+#include "copyright.h"
+
+// Miscellaneous useful routines
+
+#define NULL 0
+#define TRUE  true
+#define FALSE  false
+// #define bool int		// necessary on the Mac?
+
+#define min(a,b)  (((a) < (b)) ? (a) : (b))
+#define max(a,b)  (((a) > (b)) ? (a) : (b))
+
+// Divide and either round up or down 
+#define divRoundDown(n,s)  ((n) / (s))
+#define divRoundUp(n,s)    (((n) / (s)) + ((((n) % (s)) > 0) ? 1 : 0))
+
+// This declares the type "VoidFunctionPtr" to be a "pointer to a
+// function taking an arbitrary pointer argument and returning nothing".  With
+// such a function pointer (say it is "func"), we can call it like this:
+//
+//	(*func) ("help!");
+//
+// This is used by Thread::Fork as well as a couple of other places.
+
+typedef void (*VoidFunctionPtr)(void *arg); 
+typedef void (*VoidNoArgFunctionPtr)(); 
+
+#endif // UTILITY_H