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annotate test/testsem.c @ 4451:033c455bbe99

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Refactored automated rwops tests so read and write directories can be more easily customized. The refactored tests were written in recognition that Mac and iPhone current working directories are usually not going to work. Resource directories are in bundles and write directories are restricted to certain areas. In theory, other platforms may have this problem too, hence the refactoring. Also updated the Xcode iPhone project to use 3.2 as the Base SDK, but 3.1 as the Deployment SDK (for iPhone/iPad compatibility.)
author Eric Wing <ewing . public |-at-| gmail . com>
date Sun, 09 May 2010 06:58:30 -0700
parents c121d94672cb
children d547877e355e
rev   line source
0
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1
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2 /* Simple test of the SDL semaphore 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
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8 #include "SDL.h"
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9 #include "SDL_thread.h"
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10
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11 #define NUM_THREADS 10
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12
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13 static SDL_sem *sem;
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14 int alive = 1;
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15
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16 int SDLCALL
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17 ThreadFunc(void *data)
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18 {
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19 int threadnum = (int) (uintptr_t) data;
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20 while (alive) {
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21 SDL_SemWait(sem);
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22 fprintf(stderr,
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23 "Thread number %d has got the semaphore (value = %d)!\n",
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24 threadnum, SDL_SemValue(sem));
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25 SDL_Delay(200);
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26 SDL_SemPost(sem);
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27 fprintf(stderr,
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28 "Thread number %d has released the semaphore (value = %d)!\n",
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29 threadnum, SDL_SemValue(sem));
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30 SDL_Delay(1); /* For the scheduler */
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31 }
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32 printf("Thread number %d exiting.\n", threadnum);
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33 return 0;
0
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34 }
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35
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36 static void
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37 killed(int sig)
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38 {
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39 alive = 0;
0
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40 }
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41
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42 int
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43 main(int argc, char **argv)
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44 {
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45 SDL_Thread *threads[NUM_THREADS];
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46 uintptr_t i;
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47 int init_sem;
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48
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49 if (argc < 2) {
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50 fprintf(stderr, "Usage: %s init_value\n", argv[0]);
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51 return (1);
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52 }
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53
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54 /* Load the SDL library */
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55 if (SDL_Init(0) < 0) {
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56 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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57 return (1);
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58 }
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59 signal(SIGTERM, killed);
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60 signal(SIGINT, killed);
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61
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62 init_sem = atoi(argv[1]);
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63 sem = SDL_CreateSemaphore(init_sem);
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64
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65 printf("Running %d threads, semaphore value = %d\n", NUM_THREADS,
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66 init_sem);
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67 /* Create all the threads */
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68 for (i = 0; i < NUM_THREADS; ++i) {
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69 threads[i] = SDL_CreateThread(ThreadFunc, (void *) i);
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70 }
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71
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72 /* Wait 10 seconds */
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73 SDL_Delay(10 * 1000);
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74
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75 /* Wait for all threads to finish */
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76 printf("Waiting for threads to finish\n");
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77 alive = 0;
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78 for (i = 0; i < NUM_THREADS; ++i) {
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79 SDL_WaitThread(threads[i], NULL);
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80 }
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81 printf("Finished waiting for threads\n");
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82
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83 SDL_DestroySemaphore(sem);
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84 SDL_Quit();
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85 return (0);
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86 }