4 * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
5 * This file is part of DevLib - See README.devlib for information.
8 * \brief Portable abstraction for high-resolution time handling (implementation)
11 * \author Bernardo Innocenti <bernie@develer.com>
16 *#* Revision 1.6 2006/02/20 01:46:46 bernie
19 *#* Revision 1.5 2005/11/04 16:20:02 bernie
20 *#* Fix reference to README.devlib in header.
22 *#* Revision 1.4 2004/08/25 14:12:09 rasky
23 *#* Aggiornato il comment block dei log RCS
25 *#* Revision 1.3 2004/08/10 05:45:04 bernie
26 *#* Fix spacing in header.
28 *#* Revision 1.2 2004/06/03 11:27:09 bernie
29 *#* Add dual-license information.
31 *#* Revision 1.1 2004/06/03 09:01:06 bernie
32 *#* Import into DevLib.
42 hptime_t hptime_get(void)
47 * La precisione dei FileTime sarebbe 100ns, ma il
48 * valore viene ottenuto convertendo una struttura
49 * SYSTEMTIME, che ha precisione di 1ms. Il numero
50 * che otteniamo e' quindi sempre un multiplo di
53 GetSystemTimeAsFileTime(&ft);
55 /* Copy the upper/lower into a quadword. */
56 return (((hptime_t)ft.dwHighDateTime) << 32) + (hptime_t)ft.dwLowDateTime;
59 #elif defined(__unix__) || defined(__APPLE__) && defined(__MACH__)
63 hptime_t hptime_get(void)
68 return (hptime_t)tv.tv_sec * HPTIME_TICKS_PER_SECOND
69 + (hptime_t)tv.tv_usec;
73 #error OS dependent support code missing for this OS
74 #endif /* !__unix__ */