source: GTP/trunk/App/Demos/Geom/OgreStuff/include/ode/timer.h @ 1812

Revision 1812, 2.8 KB checked in by gumbau, 18 years ago (diff)
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1/*************************************************************************
2 *                                                                       *
3 * Open Dynamics Engine, Copyright (C) 2001,2002 Russell L. Smith.       *
4 * All rights reserved.  Email: russ@q12.org   Web: www.q12.org          *
5 *                                                                       *
6 * This library is free software; you can redistribute it and/or         *
7 * modify it under the terms of EITHER:                                  *
8 *   (1) The GNU Lesser General Public License as published by the Free  *
9 *       Software Foundation; either version 2.1 of the License, or (at  *
10 *       your option) any later version. The text of the GNU Lesser      *
11 *       General Public License is included with this library in the     *
12 *       file LICENSE.TXT.                                               *
13 *   (2) The BSD-style license that is included with this library in     *
14 *       the file LICENSE-BSD.TXT.                                       *
15 *                                                                       *
16 * This library is distributed in the hope that it will be useful,       *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files    *
19 * LICENSE.TXT and LICENSE-BSD.TXT for more details.                     *
20 *                                                                       *
21 *************************************************************************/
22
23#ifndef _ODE_TIMER_H_
24#define _ODE_TIMER_H_
25
26#include <ode/config.h>
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32
33/* stop watch objects */
34
35typedef struct dStopwatch {
36  double time;                  /* total clock count */
37  unsigned long cc[2];          /* clock count since last `start' */
38} dStopwatch;
39
40void dStopwatchReset (dStopwatch *);
41void dStopwatchStart (dStopwatch *);
42void dStopwatchStop  (dStopwatch *);
43double dStopwatchTime (dStopwatch *);   /* returns total time in secs */
44
45
46/* code timers */
47
48void dTimerStart (const char *description);     /* pass a static string here */
49void dTimerNow (const char *description);       /* pass a static string here */
50void dTimerEnd();
51
52/* print out a timer report. if `average' is nonzero, print out the average
53 * time for each slot (this is only meaningful if the same start-now-end
54 * calls are being made repeatedly.
55 */
56void dTimerReport (FILE *fout, int average);
57
58
59/* resolution */
60
61/* returns the timer ticks per second implied by the timing hardware or API.
62 * the actual timer resolution may not be this great.
63 */
64double dTimerTicksPerSecond();
65
66/* returns an estimate of the actual timer resolution, in seconds. this may
67 * be greater than 1/ticks_per_second.
68 */
69double dTimerResolution();
70
71
72#ifdef __cplusplus
73}
74#endif
75
76#endif
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