Mercurial > sdl-ios-xcode

annotate test/testlock.c @ 3798:c8b3d3d13ed1 SDL-ryan-multiple-audio-device

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Audio bootstraps can now specify that a driver is only to be used if explicitly requested (for things like the "disk" driver that is always available but you would never want to default to using). Trimmed out code that can be handled by stubs in the core. The "dummy" driver is pretty damned small now. :)
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 21:27:53 +0000
parents c121d94672cb
children 4436464c4f51
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 Uint32 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 %u: 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 Uint32 id = SDL_ThreadID();
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45 int i;
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46 printf("Process %u: Cleaning up...\n", id == mainthread ? 0 : id);
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47 for (i = 0; i < 6; ++i)
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48 SDL_KillThread(threads[i]);
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49 SDL_DestroyMutex(mutex);
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50 exit(sig);
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51 }
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52
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53 int SDLCALL
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54 Run(void *data)
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55 {
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56 if (SDL_ThreadID() == mainthread)
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57 signal(SIGTERM, closemutex);
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58 while (1) {
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59 printf("Process %u ready to work\n", SDL_ThreadID());
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60 if (SDL_mutexP(mutex) < 0) {
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61 fprintf(stderr, "Couldn't lock mutex: %s", SDL_GetError());
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62 exit(1);
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63 }
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64 printf("Process %u, working!\n", SDL_ThreadID());
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65 SDL_Delay(1 * 1000);
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66 printf("Process %u, done!\n", SDL_ThreadID());
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67 if (SDL_mutexV(mutex) < 0) {
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68 fprintf(stderr, "Couldn't unlock mutex: %s", SDL_GetError());
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69 exit(1);
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70 }
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71 /* If this sleep isn't done, then threads may starve */
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72 SDL_Delay(10);
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73 if (SDL_ThreadID() == mainthread && doterminate) {
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74 printf("Process %u: raising SIGTERM\n", SDL_ThreadID());
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75 raise(SIGTERM);
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76 }
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77 }
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78 return (0);
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79 }
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80
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81 int
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82 main(int argc, char *argv[])
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83 {
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84 int i;
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85 int maxproc = 6;
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86
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87 /* Load the SDL library */
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88 if (SDL_Init(0) < 0) {
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89 fprintf(stderr, "%s\n", SDL_GetError());
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90 exit(1);
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91 }
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92 atexit(SDL_Quit_Wrapper);
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93
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94 if ((mutex = SDL_CreateMutex()) == NULL) {
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95 fprintf(stderr, "Couldn't create mutex: %s\n", SDL_GetError());
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96 exit(1);
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97 }
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98
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99 mainthread = SDL_ThreadID();
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100 printf("Main thread: %u\n", mainthread);
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101 atexit(printid);
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102 for (i = 0; i < maxproc; ++i) {
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103 if ((threads[i] = SDL_CreateThread(Run, NULL)) == NULL)
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104 fprintf(stderr, "Couldn't create thread!\n");
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105 }
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106 signal(SIGINT, terminate);
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107 Run(NULL);
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108
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109 return (0); /* Never reached */
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110 }