annotate src/timer/beos/SDL_systimer.c @ 4134:31c7c57af8a4 SDL-1.2

Updates for building on Windows CE using mingw32ce cross compiler: http://sourceforge.net/mailarchive/forum.php?thread_name 0703291652.38437.jwalt%40garni.ch&forum_name=cegcc-devel Hi! I just managed to compile SDL for Windows CE using the "mingw32ce" configuration of http://cegcc.sourceforge.net. Test programs work as expected (except for those using signals -- no POSIX on mingw32ce), and I didn't yet encounter any problem. While it was a pain to get everything compiled and running, the changes to SDL are actually quite small (see attached SDL-ce.diff). Unfortunately, the win32 headers shipped with cegcc are not 100% correct, and it feels quite messy to work around them in SDL code, so those headers will also need to be patched. (Attachment: win32api-ce.diff) Since I had to apply the libtool patch from the cegcc patch, I have also ad ded my copy of aclocal.m4 for SDL. I had to modify the cegcc libtool patch to use "lt_cv_deplibs_check_method=pass_all" for mingw32ce, otherwise libtool would not recognize the import libraries as valid for dynamic linking. All these changes should not affect non-WinCE builds, so they could be included in mainline SDL. If you need some docs, you can use this description for a cross-compilation README: 1) get cegcc from http://cegcc.sourceforge.net 2) build and install the "mingw32ce" variant (see cegcc installation docs) 3) patch w32api-headers (if not yet included in cegcc) 4) setup environment (customize the first three lines as you like): PREFIX=/opt/mingw32ce TARGET=arm-wince-mingw32ce BUILD=`uname -m`-pc-linux-gnu export PATH="$PREFIX/bin:$PREFIX/$TARGET/bin:$PREFIX/local/bin:$PATH" export CFLAGS="${CFLAGS:- -O2 -g} -I$PREFIX/local/include" export CPPFLAGS="${CPPFLAGS:- -O2 -g} -I$PREFIX/local/include" export CXXFLAGS="${CXXFLAGS:- -O2 -g} -I$PREFIX/local/include" export LDFLAGS="${LDFLAGS:- -O2 -g} -L$PREFIX/local/lib" export HOST_CC="gcc" export CC="$PREFIX/bin/$TARGET-gcc" export CXX="$PREFIX/bin/$TARGET-g++" export LD="$PREFIX/bin/$TARGET-ld" export AS="$PREFIX/bin/$TARGET-as" export AR="$PREFIX/bin/$TARGET-ar" export RANLIB="$PREFIX/bin/$TARGET-ranlib" export CONFIG_SHELL="/bin/sh" 5) build and install ./configure --target=$TARGET --host=$TARGET --build=$BUILD make make install 6) use (4) and (5) for any SDL-using software you want to cross-compile 7) copy $PREFIX/local/bin/SDL-1-2-0.dll into your executable directory on the WinCE machine
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Jan 2008 06:19:07 +0000
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children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifdef SDL_TIMER_BEOS
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25
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26 #include <be/kernel/OS.h>
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27
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28 #include "SDL_thread.h"
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29 #include "SDL_timer.h"
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30 #include "../SDL_timer_c.h"
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31
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32 static bigtime_t start;
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33
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34 void SDL_StartTicks(void)
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35 {
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36 /* Set first ticks value */
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37 start = system_time();
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38 }
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39
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40 Uint32 SDL_GetTicks(void)
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41 {
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42 return((system_time()-start)/1000);
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43 }
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44
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45 void SDL_Delay(Uint32 ms)
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46 {
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47 snooze(ms*1000);
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48 }
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49
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50 /* Data to handle a single periodic alarm */
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51 static int timer_alive = 0;
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52 static SDL_Thread *timer = NULL;
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53
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54 static int RunTimer(void *unused)
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55 {
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56 while ( timer_alive ) {
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57 if ( SDL_timer_running ) {
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58 SDL_ThreadedTimerCheck();
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59 }
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60 SDL_Delay(10);
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61 }
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62 return(0);
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63 }
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64
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65 /* This is only called if the event thread is not running */
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66 int SDL_SYS_TimerInit(void)
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67 {
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68 timer_alive = 1;
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69 timer = SDL_CreateThread(RunTimer, NULL);
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70 if ( timer == NULL )
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71 return(-1);
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72 return(SDL_SetTimerThreaded(1));
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73 }
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74
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75 void SDL_SYS_TimerQuit(void)
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76 {
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77 timer_alive = 0;
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78 if ( timer ) {
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79 SDL_WaitThread(timer, NULL);
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80 timer = NULL;
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81 }
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82 }
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83
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84 int SDL_SYS_StartTimer(void)
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85 {
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86 SDL_SetError("Internal logic error: BeOS uses threaded timer");
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87 return(-1);
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88 }
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89
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90 void SDL_SYS_StopTimer(void)
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91 {
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92 return;
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93 }
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95 #endif /* SDL_TIMER_BEOS */