basic.c

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#include <stdlib.h>
#include <stdarg.h>
#include "basic.h"


void *MallocWithErrorMessage(size_t Size)
{
    void *Ptr;
    
    if(!(Ptr = malloc(Size)))
        ErrorMessage("Memory allocation of %u bytes failed.\n", Size);
        
    return Ptr;
}


void *ReallocWithErrorMessage(void *Ptr, size_t Size)
{
    void *NewPtr;
    
    if(!(NewPtr = realloc(Ptr, Size)))
    {
        ErrorMessage("Memory reallocation of %u bytes failed.\n", Size);
        Free(Ptr);  /* Free the previous block on failure */
    }
        
    return NewPtr;
}


void ErrorMessage(const char *Format, ...)
{
    va_list Args;
    
    va_start(Args, Format);
    /* Write a formatted error message to stderr */
    vfprintf(stderr, Format, Args);
    va_end(Args);
}


#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
/* Windows: implement with GetSystemTime */
        
#define WIN32_LEAN_AND_MEAN
#include <windows.h>

/* Clock:  Get the system clock in milliseconds */
unsigned long Clock()
{
        static SYSTEMTIME TimeVal;
        GetSystemTime(&TimeVal);
        return (unsigned long)((unsigned long)TimeVal.wMilliseconds
                + 1000*((unsigned long)TimeVal.wSecond
                + 60*((unsigned long)TimeVal.wMinute 
                + 60*((unsigned long)TimeVal.wHour 
                + 24*(unsigned long)TimeVal.wDay))));
}

#else
/* UNIX: implement with gettimeofday */

#include <sys/time.h>
#include <unistd.h>

/* Clock:  Get the system clock in milliseconds */
unsigned long Clock()
{
        struct timeval TimeVal;
        gettimeofday(&TimeVal, NULL); 
        return (unsigned long)(TimeVal.tv_usec/1000 + TimeVal.tv_sec*1000);
}

#endif