vanitygen/winglue.c

#include <tchar.h>
#include <time.h>
#include <windows.h> 

#define INLINE
#define snprintf _snprintf

/*
 * struct timeval compatibility for Win32
 */

#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
#define DELTA_EPOCH_IN_MICROSECS  11644473600000000Ui64
#else
#define DELTA_EPOCH_IN_MICROSECS  11644473600000000ULL
#endif

struct timezone;

int
gettimeofday(struct timeval *tv, struct timezone *tz)
{
	FILETIME ft;
	unsigned __int64 tmpres = 0;
	static int tzflag;

	if (NULL != tv) {
		GetSystemTimeAsFileTime(&ft);

		tmpres |= ft.dwHighDateTime;
		tmpres <<= 32;
		tmpres |= ft.dwLowDateTime;

		tmpres -= DELTA_EPOCH_IN_MICROSECS; 
		tmpres /= 10;
		tv->tv_sec = (long)(tmpres / 1000000UL);
		tv->tv_usec = (long)(tmpres % 1000000UL);
	}

	return 0;
}

void
timersub(struct timeval *a, struct timeval *b, struct timeval *result)
{
	result->tv_sec = a->tv_sec - b->tv_sec;
	result->tv_usec = a->tv_usec - b->tv_usec;
	if (result->tv_usec < 0) {
		result->tv_sec--;
		result->tv_usec += 1000000;
	}
}

/*
 * getopt() for Win32 -- public domain ripped from codeproject.com
 */

TCHAR *optarg;
int optind = 0;

int getopt(int argc, TCHAR *argv[], TCHAR *optstring)
{
	static TCHAR *next = NULL;
	TCHAR c;
	TCHAR *cp;

	if (optind == 0)
		next = NULL;

	optarg = NULL;

	if (next == NULL || *next == _T('\0'))
	{
		if (optind == 0)
			optind++;

		if (optind >= argc || argv[optind][0] != _T('-') || argv[optind][1] == _T('\0'))
		{
			optarg = NULL;
			if (optind < argc)
				optarg = argv[optind];
			return EOF;
		}

		if (_tcscmp(argv[optind], _T("--")) == 0)
		{
			optind++;
			optarg = NULL;
			if (optind < argc)
				optarg = argv[optind];
			return EOF;
		}

		next = argv[optind];
		next++;		// skip past -
		optind++;
	}

	c = *next++;
	cp = _tcschr(optstring, c);

	if (cp == NULL || c == _T(':'))
		return _T('?');

	cp++;
	if (*cp == _T(':'))
	{
		if (*next != _T('\0'))
		{
			optarg = next;
			next = NULL;
		}
		else if (optind < argc)
		{
			optarg = argv[optind];
			optind++;
		}
		else
		{
			return _T('?');
		}
	}

	return c;
}

/*
 * If ptw32 is being linked in as a static library, make sure that
 * its process attach function gets called before main().
 */
#if defined(PTW32_STATIC_LIB)
#pragma section(".CRT$XIC",long,read)
int __cdecl __initptw32(void);
#define _CRTALLOC(x) __declspec(allocate(x))
_CRTALLOC(".CRT$XIC")
static pinit = __initptw32;
int __cdecl
__initptw32(void)
{
	pthread_win32_process_attach_np();
	return 0;
}
#endif  /* defined(PTW32_STATIC_LIB) */