e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 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 | #include "SDL_config.h" |
23 | |
24 | #ifdef SDL_TIMER_BEOS |
25 | |
26 | #include <be/kernel/OS.h> |
27 | |
28 | #include "SDL_thread.h" |
29 | #include "SDL_timer.h" |
30 | #include "../SDL_timer_c.h" |
31 | |
32 | static bigtime_t start; |
33 | |
34 | void SDL_StartTicks(void) |
35 | { |
36 | /* Set first ticks value */ |
37 | start = system_time(); |
38 | } |
39 | |
40 | Uint32 SDL_GetTicks(void) |
41 | { |
42 | return((system_time()-start)/1000); |
43 | } |
44 | |
45 | void SDL_Delay(Uint32 ms) |
46 | { |
47 | snooze(ms*1000); |
48 | } |
49 | |
50 | /* Data to handle a single periodic alarm */ |
51 | static int timer_alive = 0; |
52 | static SDL_Thread *timer = NULL; |
53 | |
54 | static int RunTimer(void *unused) |
55 | { |
56 | while ( timer_alive ) { |
57 | if ( SDL_timer_running ) { |
58 | SDL_ThreadedTimerCheck(); |
59 | } |
60 | SDL_Delay(10); |
61 | } |
62 | return(0); |
63 | } |
64 | |
65 | /* This is only called if the event thread is not running */ |
66 | int SDL_SYS_TimerInit(void) |
67 | { |
68 | timer_alive = 1; |
69 | timer = SDL_CreateThread(RunTimer, NULL); |
70 | if ( timer == NULL ) |
71 | return(-1); |
72 | return(SDL_SetTimerThreaded(1)); |
73 | } |
74 | |
75 | void SDL_SYS_TimerQuit(void) |
76 | { |
77 | timer_alive = 0; |
78 | if ( timer ) { |
79 | SDL_WaitThread(timer, NULL); |
80 | timer = NULL; |
81 | } |
82 | } |
83 | |
84 | int SDL_SYS_StartTimer(void) |
85 | { |
86 | SDL_SetError("Internal logic error: BeOS uses threaded timer"); |
87 | return(-1); |
88 | } |
89 | |
90 | void SDL_SYS_StopTimer(void) |
91 | { |
92 | return; |
93 | } |
94 | |
95 | #endif /* SDL_TIMER_BEOS */ |