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annotate test/torturethread.c @ 4593:3892fe2f6537

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Fixed so many things. See the changelog listed below. 1. Use SDL_X11_HAVE_XRENDER to check for RENDER at runtime. 2. Added lots of comments. 3. Added checks and lots of calls to SDL_SetError(). 4. Fixed X11_CreateTexture() so that the pixmap and image created are for the format specified by the user and not the window format. This is only for the RENDER case. 5. The above change required that functions to convert SDL pixel format enums to Visuals and XRenderPictFormats be added. 6. Fixed lots of 'style' issues.
author Sunny Sachanandani <sunnysachanandani@gmail.com>
date Sat, 17 Jul 2010 15:38:24 +0530
parents c121d94672cb
children
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0
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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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15
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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
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18 quit(int rc)
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19 {
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20 SDL_Quit();
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21 exit(rc);
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22 }
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23
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24 int SDLCALL
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25 SubThreadFunc(void *data)
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26 {
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27 while (!*(int volatile *) data) {
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28 ; /*SDL_Delay(10); *//* do nothing */
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29 }
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30 return 0;
0
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31 }
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32
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33 int SDLCALL
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34 ThreadFunc(void *data)
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35 {
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36 SDL_Thread *sub_threads[NUMTHREADS];
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37 int flags[NUMTHREADS];
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38 int i;
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39 int tid = (int) (uintptr_t) data;
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40
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41 fprintf(stderr, "Creating Thread %d\n", tid);
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42
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43 for (i = 0; i < NUMTHREADS; i++) {
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44 flags[i] = 0;
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45 sub_threads[i] = SDL_CreateThread(SubThreadFunc, &flags[i]);
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46 }
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47
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48 printf("Thread '%d' waiting for signal\n", tid);
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49 while (time_for_threads_to_die[tid] != 1) {
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50 ; /* do nothing */
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51 }
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52
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53 printf("Thread '%d' sending signals to subthreads\n", tid);
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54 for (i = 0; i < NUMTHREADS; i++) {
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55 flags[i] = 1;
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56 SDL_WaitThread(sub_threads[i], NULL);
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57 }
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58
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59 printf("Thread '%d' exiting!\n", tid);
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60
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61 return 0;
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62 }
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63
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64 int
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65 main(int argc, char *argv[])
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66 {
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67 SDL_Thread *threads[NUMTHREADS];
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68 int i;
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69
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70 /* Load the SDL library */
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71 if (SDL_Init(0) < 0) {
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72 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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73 return (1);
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74 }
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75
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76 signal(SIGSEGV, SIG_DFL);
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77 for (i = 0; i < NUMTHREADS; i++) {
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78 time_for_threads_to_die[i] = 0;
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79 threads[i] = SDL_CreateThread(ThreadFunc, (void *) (uintptr_t) i);
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80
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81 if (threads[i] == NULL) {
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82 fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
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83 quit(1);
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84 }
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85 }
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86
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87 for (i = 0; i < NUMTHREADS; i++) {
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88 time_for_threads_to_die[i] = 1;
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89 }
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91 for (i = 0; i < NUMTHREADS; i++) {
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92 SDL_WaitThread(threads[i], NULL);
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93 }
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94 SDL_Quit();
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95 return (0);
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96 }