annotate test/testsem.c @ 1169:4b3e2294782d

Date: Sun, 06 Nov 2005 18:23:03 +0900 From: Hayashi Naoyuki <titan@culzean.org> To: "A list for developers using the SDL library. \(includes SDL-announce\)" <sdl@libsdl.org> Subject: Re: [SDL] Dynamic X11... 1. Compilation produce the following error on Tru64 UNIX. cc: Severe: SDL_x11dyn.h, line 31: Cannot find file <X11/extensions/extutil.h> specified in #include directive. (noinclfilef) #include <X11/extensions/extutil.h> Because Tru64 UNIX doesn't have extutil.h, this error is caused. 2. Compilation with --enable-x11-shared=no produce the following error. cc: Error: SDL_x11sym.h, line 115: In this statement, "Xutf8TextListToTextProperty" is not declared. (undeclared) SDL_X11_SYM(int,Xutf8TextListToTextProperty,(Display*,char**,int,XICCEncodingStyle,XTextProperty*)) Though it doesn't have Xutf8TextListToTextProperty, "pXutf8TextListToTextProperty = Xutf8TextListToTextProperty;" in SDL_x11dyn.c,117-119 #define SDL_X11_SYM(r,fn,arg) p##fn = fn; #include "SDL_x11sym.h" #undef SDL_X11_SYM -- Hayashi Naoyuki Key fingerprint = 60A0 D5D3 F58B 3633 2E52 0147 D17F 5578 3FDF F5B6
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 06 Nov 2005 17:05:12 +0000
parents be9c9c8f6d53
children 4d3bb026cd16
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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 /* 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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22
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23 int ThreadFunc(void *data)
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24 {
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25 while ( alive ) {
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26 SDL_SemWait(sem);
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27 fprintf(stderr, "Thread number %d has got the semaphore (value = %d)!\n", (int)data, SDL_SemValue(sem));
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28 SDL_Delay(200);
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29 SDL_SemPost(sem);
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30 fprintf(stderr, "Thread number %d has released the semaphore (value = %d)!\n", (int)data, SDL_SemValue(sem));
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31 SDL_Delay(1); /* For the scheduler */
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32 }
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33 printf("Thread number %d exiting.\n", (int)data);
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34 return 0;
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35 }
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36
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37 static void killed(int sig)
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38 {
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39 alive = 0;
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40 }
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41
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42 int main(int argc, char **argv)
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43 {
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44 SDL_Thread *threads[NUM_THREADS];
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45 int i, init_sem;
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46
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47 if(argc < 2) {
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48 fprintf(stderr,"Usage: %s init_value\n", argv[0]);
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49 return(1);
0
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50 }
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51
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52 /* Load the SDL library */
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53 if ( SDL_Init(0) < 0 ) {
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54 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
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55 return(1);
0
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56 }
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57 signal(SIGTERM, killed);
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58 signal(SIGINT, killed);
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59
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60 init_sem = atoi(argv[1]);
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61 sem = SDL_CreateSemaphore(init_sem);
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62
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63 printf("Running %d threads, semaphore value = %d\n", NUM_THREADS, init_sem);
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64 /* Create all the threads */
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65 for( i = 0; i < NUM_THREADS; ++i ) {
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66 threads[i] = SDL_CreateThread(ThreadFunc, (void*)i);
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67 }
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68
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69 /* Wait 10 seconds */
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70 SDL_Delay(10 * 1000);
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71
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72 /* Wait for all threads to finish */
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73 printf("Waiting for threads to finish\n");
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74 alive = 0;
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75 for( i = 0; i < NUM_THREADS; ++i ) {
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76 SDL_WaitThread(threads[i], NULL);
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77 }
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78 printf("Finished waiting for threads\n");
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79
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80 SDL_DestroySemaphore(sem);
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81 SDL_Quit();
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82 return(0);
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83 }