hxtick.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _HXTICK_H_
- #define _HXTICK_H_
- #ifdef _WIN16
- #include <windows.h>
- #include <mmsystem.h>
- #elif defined(_WIN32)
- #ifndef WIN32_LEAN_AND_MEAN
- #define WIN32_LEAN_AND_MEAN
- #include <windows.h>
- #undef WIN32_LEAN_AND_MEAN
- #else
- #include <windows.h>
- #endif
- #endif
- #include "hxtypes.h"
- /* We have added a HX_GET_BETTERTICKCOUNT which uses highly accurate timers
- * when the hardware and OS will allow and defaults back to the timers used
- * by HX_GET_TICKCOUNT when they are not available. Code which requires
- * accurate timing (i.e. better than 10-20ms) should probably use the
- * HX_GET_BETTERTICKCOUNT call. The wraparound and precision of both calls
- * should be the same - HX_GET_BETTERTICKCOUNT should always be more ACCURATE.
- */
- #if defined(_MACINTOSH) || defined(_UNIX)
- #ifdef __cplusplus
- extern "C"
- {
- #endif /* __cplusplus */
- ULONG32 GetTickCount(void);
- #define HX_GET_TICKCOUNT() GetTickCount()
- #define HX_GET_BETTERTICKCOUNT() GetTickCount()
- #ifdef __cplusplus
- }
- #endif /* __cplusplus */
- #elif defined(_SYMBIAN)
- # ifdef __cplusplus
- extern "C"
- {
- # endif /* __cplusplus */
- ULONG32 GetTickCount(void);
- # define HX_GET_TICKCOUNT() GetTickCount()
- # define HX_GET_BETTERTICKCOUNT() GetTickCount()
- # ifdef __cplusplus
- }
- # endif /* __cplusplus */ /* SYMBIAN */
- #elif defined(_OPENWAVE)
- # ifdef __cplusplus
- extern "C"
- {
- # endif /* __cplusplus */
- ULONG32 GetTickCount(void);
- #define HX_GET_TICKCOUNT() GetTickCount()
- #define HX_GET_BETTERTICKCOUNT() GetTickCount()
- # ifdef __cplusplus
- }
- # endif /* __cplusplus */ /* SYMBIAN */
- #elif defined(_WIN32)
- #define HX_GET_TICKCOUNT() GetTickCount()
- #ifdef __cplusplus
- extern "C"
- {
- #endif /* __cplusplus */
- ULONG32 GetBetterTickCount();
- // Returns a ms system tick with double precision accuracy.
- // Wraps at 2^32 -1 milliseconds.
- double GetMSTickDouble32();
- #ifdef __cplusplus
- }
- #endif /* __cplusplus */
- /*
- * In 32bit Windows we have a HX_GET_BETTERTICKCOUNT()
- * which uses the queryPerformance interface for highly accurate times.
- * XXXKB: This implementation is now thread safe;
- */
- #define HX_GET_BETTERTICKCOUNT() GetBetterTickCount()
- /* WINDOWS DEFAULT */
- #elif defined(_WINDOWS)
- #define HX_GET_TICKCOUNT() GetTickCount()
- #define HX_GET_BETTERTICKCOUNT() GetTickCount()
- #else
- #error hxtick.h::Undefined platform!
- #endif // #ifdef __MWERKS__
- #define MILLISECS_PER_SECOND ((ULONG32)1000)
- #define CALCULATE_ELAPSED_TICKS(t1,t2) ((t2) - (t1))
- // use this to measure a result from calculate_elapsed to ensure that
- // time didn't go backwards
- #define SOME_VERY_LARGE_VALUE 86400000 /* 1 day */
- // Timestamp comparisons
- #define IsTimeGreater(a, b)
- (((LONG32) ((a) - (b))) > 0)
- #define IsTimeGreaterOrEqual(a, b)
- (((LONG32) ((a) - (b))) >= 0)
- #define IsTimeLess(a, b)
- (((LONG32) ((a) - (b))) < 0)
- #define IsTimeLessOrEqual(a, b)
- (((LONG32) ((a) - (b))) <= 0)
- #endif //_HXTICK_H_