Mercurial > sdl-ios-xcode

annotate test/testlock.c @ 4495:dbbfdb9ea716

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Simplified clipboard API for sanity's sake. A complete clipboard implementation would support multiple formats that could be queried at runtime, events for when the clipboard contents changed, support for HTML, images, etc. We're not going that crazy, at least for now. :)
author Sam Lantinga <slouken@libsdl.org>
date Wed, 07 Jul 2010 23:54:03 -0700
parents 0d1b16ee0bca
children
rev   line source
0
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1
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2 /* Test the thread and mutex locking functions
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3 Also exercises the system's signal/thread interaction
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4 */
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5
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6 #include <signal.h>
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7 #include <stdio.h>
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8
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9 #include "SDL.h"
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10 #include "SDL_mutex.h"
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11 #include "SDL_thread.h"
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12
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13 static SDL_mutex *mutex = NULL;
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14 static SDL_threadID mainthread;
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15 static SDL_Thread *threads[6];
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16 static volatile int doterminate = 0;
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17
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18 /*
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19 * SDL_Quit() shouldn't be used with atexit() directly because
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20 * calling conventions may differ...
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21 */
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22 static void
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23 SDL_Quit_Wrapper(void)
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24 {
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25 SDL_Quit();
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26 }
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27
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28 void
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29 printid(void)
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30 {
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31 printf("Process %lu: exiting\n", SDL_ThreadID());
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32 }
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33
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34 void
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35 terminate(int sig)
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36 {
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37 signal(SIGINT, terminate);
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38 doterminate = 1;
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39 }
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40
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41 void
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42 closemutex(int sig)
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43 {
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44 SDL_threadID id = SDL_ThreadID();
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45 int i;
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46 printf("Process %lu: Cleaning up...\n", id == mainthread ? 0 : id);
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47 doterminate = 1;
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48 for (i = 0; i < 6; ++i)
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49 SDL_WaitThread(threads[i], NULL);
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50 SDL_DestroyMutex(mutex);
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51 exit(sig);
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52 }
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53
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54 int SDLCALL
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55 Run(void *data)
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56 {
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57 if (SDL_ThreadID() == mainthread)
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58 signal(SIGTERM, closemutex);
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59 while (!doterminate) {
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60 printf("Process %lu ready to work\n", SDL_ThreadID());
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61 if (SDL_mutexP(mutex) < 0) {
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62 fprintf(stderr, "Couldn't lock mutex: %s", SDL_GetError());
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63 exit(1);
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64 }
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65 printf("Process %lu, working!\n", SDL_ThreadID());
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66 SDL_Delay(1 * 1000);
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67 printf("Process %lu, done!\n", SDL_ThreadID());
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68 if (SDL_mutexV(mutex) < 0) {
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69 fprintf(stderr, "Couldn't unlock mutex: %s", SDL_GetError());
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70 exit(1);
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71 }
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72 /* If this sleep isn't done, then threads may starve */
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73 SDL_Delay(10);
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74 }
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75 if (SDL_ThreadID() == mainthread && doterminate) {
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76 printf("Process %lu: raising SIGTERM\n", SDL_ThreadID());
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77 raise(SIGTERM);
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78 }
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79 return (0);
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80 }
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81
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82 int
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83 main(int argc, char *argv[])
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84 {
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85 int i;
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86 int maxproc = 6;
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87
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88 /* Load the SDL library */
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89 if (SDL_Init(0) < 0) {
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90 fprintf(stderr, "%s\n", SDL_GetError());
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91 exit(1);
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92 }
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93 atexit(SDL_Quit_Wrapper);
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94
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95 if ((mutex = SDL_CreateMutex()) == NULL) {
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96 fprintf(stderr, "Couldn't create mutex: %s\n", SDL_GetError());
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97 exit(1);
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98 }
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99
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100 mainthread = SDL_ThreadID();
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101 printf("Main thread: %lu\n", mainthread);
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102 atexit(printid);
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103 for (i = 0; i < maxproc; ++i) {
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104 if ((threads[i] = SDL_CreateThread(Run, NULL)) == NULL)
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105 fprintf(stderr, "Couldn't create thread!\n");
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106 }
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107 signal(SIGINT, terminate);
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108 Run(NULL);
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109
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110 return (0); /* Never reached */
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111 }