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comparison src/timer/dummy/SDL_systimer.c @ 1361:19418e4422cb

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New configure-based build system. Still work in progress, but much improved
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Feb 2006 10:11:48 +0000
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children d910939febfa
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1360:70a9cfb4cf1b 1361:19418e4422cb
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22
23 void SDL_StartTicks(void)
24 {
25 }
26
27 Uint32 SDL_GetTicks (void)
28 {
29 SDL_Unsupported();
30 return 0;
31 }
32
33 void SDL_Delay (Uint32 ms)
34 {
35 SDL_Unsupported();
36 }
37
38 #include "SDL_thread.h"
39
40 /* Data to handle a single periodic alarm */
41 static int timer_alive = 0;
42 static SDL_Thread *timer = NULL;
43
44 static int RunTimer(void *unused)
45 {
46 while ( timer_alive ) {
47 if ( SDL_timer_running ) {
48 SDL_ThreadedTimerCheck();
49 }
50 SDL_Delay(1);
51 }
52 return(0);
53 }
54
55 /* This is only called if the event thread is not running */
56 int SDL_SYS_TimerInit(void)
57 {
58 timer_alive = 1;
59 timer = SDL_CreateThread(RunTimer, NULL);
60 if ( timer == NULL )
61 return(-1);
62 return(SDL_SetTimerThreaded(1));
63 }
64
65 void SDL_SYS_TimerQuit(void)
66 {
67 timer_alive = 0;
68 if ( timer ) {
69 SDL_WaitThread(timer, NULL);
70 timer = NULL;
71 }
72 }
73
74 int SDL_SYS_StartTimer(void)
75 {
76 SDL_SetError("Internal logic error: threaded timer in use");
77 return(-1);
78 }
79
80 void SDL_SYS_StopTimer(void)
81 {
82 return;
83 }