1 /*---------------------------------------------------------------------------*
2 Project: Dolphin OS Overview - Stopwatch demo
3 File: stopwatchdemo.c
4
5 Copyright 1998, 1999 Nintendo. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain
8 proprietary information of Nintendo of America Inc. and/or Nintendo
9 Company Ltd., and are protected by Federal copyright law. They may
10 not be disclosed to third parties or copied or duplicated in any form,
11 in whole or in part, without the prior written consent of Nintendo.
12
13 $Log: stopwatchdemo.c,v $
14 Revision 1.2 02/20/2006 04:13:11 mitu
15 changed include path from dolphin/ to revolution/.
16
17 Revision 1.1 01/13/2006 11:24:13 hiratsu
18 Initial check in.
19
20
21 1 6/04/99 3:04p Tianli01
22 Initial check-in
23 $NoKeywords: $
24 *---------------------------------------------------------------------------*/
25
26 /*---------------------------------------------------------------------------*
27 This program times how long a matrix concatenation takes
28 *---------------------------------------------------------------------------*/
29
30 #include <revolution.h>
31
32 #define OUTER_ITERATIONS 50
33 #define INNER_ITERATIONS 100
34
35 OSStopwatch MySW;
36
main(void)37 void main (void)
38 {
39 u32 i, j;
40 Mtx a, b, ab;
41
42 OSInit();
43
44 OSReport("\n-----------------------------------");
45 OSReport("\n Hit Command+Q to quit this demo");
46 OSReport("\n-----------------------------------\n\n");
47
48 OSInitStopwatch(&MySW, "100 concat stopwatch");
49 OSReport("Stopwatch demo program\nTimes %d matrix concatenations\n",
50 OUTER_ITERATIONS*INNER_ITERATIONS);
51
52 MTXIdentity(a);
53 MTXIdentity(b);
54 MTXIdentity(ab);
55
56 for (i = 0; i < OUTER_ITERATIONS; i++)
57 {
58 OSStartStopwatch(&MySW);
59 for (j = 0; j < INNER_ITERATIONS; j++)
60 {
61 MTXConcat(a, b, ab);
62 }
63 OSStopStopwatch(&MySW);
64 }
65 OSReport("\nEach hit is 100 matrix concats:\n");
66 OSDumpStopwatch(&MySW);
67 OSHalt("Stopwatch Demo complete");
68 }
69