annotate test/torturethread.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
parents 290b5baf2fca
children 782fd950bd46 c121d94672cb
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1
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2 /* Simple test of the SDL threading code */
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3
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <signal.h>
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7 #include <string.h>
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8
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9 #include "SDL.h"
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10 #include "SDL_thread.h"
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11
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12 #define NUMTHREADS 10
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13
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14 static char volatile time_for_threads_to_die[NUMTHREADS];
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16 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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17 static void quit(int rc)
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18 {
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19 SDL_Quit();
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20 exit(rc);
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21 }
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23 int SDLCALL SubThreadFunc(void *data) {
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24 while(! *(int volatile *)data) {
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25 ; /*SDL_Delay(10);*/ /* do nothing */
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26 }
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27 return 0;
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28 }
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29
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30 int SDLCALL ThreadFunc(void *data) {
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31 SDL_Thread *sub_threads[NUMTHREADS];
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32 int flags[NUMTHREADS];
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33 int i;
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34 int tid = (int)(uintptr_t)data;
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36 fprintf(stderr, "Creating Thread %d\n", tid);
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37
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38 for(i = 0; i < NUMTHREADS; i++) {
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39 flags[i] = 0;
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40 sub_threads[i] = SDL_CreateThread(SubThreadFunc, &flags[i]);
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41 }
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42
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43 printf("Thread '%d' waiting for signal\n", tid);
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44 while(time_for_threads_to_die[tid] != 1) {
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45 ; /* do nothing */
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46 }
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47
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48 printf("Thread '%d' sending signals to subthreads\n", tid);
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49 for(i = 0; i < NUMTHREADS; i++) {
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50 flags[i] = 1;
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51 SDL_WaitThread(sub_threads[i], NULL);
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52 }
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53
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54 printf("Thread '%d' exiting!\n", tid);
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55
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56 return 0;
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57 }
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58
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59 int main(int argc, char *argv[])
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60 {
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61 SDL_Thread *threads[NUMTHREADS];
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62 int i;
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63
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64 /* Load the SDL library */
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65 if ( SDL_Init(0) < 0 ) {
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66 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
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67 return(1);
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68 }
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69
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70 signal(SIGSEGV, SIG_DFL);
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71 for(i = 0; i < NUMTHREADS; i++) {
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72 time_for_threads_to_die[i] = 0;
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73 threads[i] = SDL_CreateThread(ThreadFunc, (void *)(uintptr_t)i);
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74
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75 if ( threads[i] == NULL ) {
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76 fprintf(stderr,
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77 "Couldn't create thread: %s\n", SDL_GetError());
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78 quit(1);
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79 }
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80 }
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81
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82 for(i = 0; i < NUMTHREADS; i++) {
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83 time_for_threads_to_die[i] = 1;
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84 }
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85
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86 for(i = 0; i < NUMTHREADS; i++) {
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87 SDL_WaitThread(threads[i], NULL);
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88 }
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89 SDL_Quit();
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90 return(0);
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91 }