utility.h

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#ifndef UTILITY_H
#define UTILITY_H

#include "copyright.h"

// Miscellaneous useful routines

#include <bool.h>
                        // Boolean values.  
                        // This is the same definition 
                        // as in the g++ library.

#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 integer argument and returning nothing".  With
// such a function pointer (say it is "func"), we can call it like this:
//
//      (*func) (17);
//
// This is used by Thread::Fork and for interrupt handlers, as well
// as a couple of other places.

typedef void (*VoidFunctionPtr) (int arg);
typedef void (*VoidNoArgFunctionPtr) ();


#include "sysdep.h"

// Interface to debugging routines.

extern void DebugInit (const char *flags);

extern bool DebugIsEnabled (char flag);

extern void DEBUG (char flag, const char *format, ...);
                            // if flag is enabled

#define ASSERT(condition)                                                     \
    if (!(condition)) {                                                       \
        fprintf(stderr, "Assertion failed: line %d, file \"%s\"\n",           \
                __LINE__, __FILE__);                                          \
    fflush(stderr);                               \
        Abort();                                                              \
    }


#endif /* UTILITY_H */