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annotate test/testloadso.c @ 2334:80ceefc00ada gsoc2008_iphone

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author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 11 Jul 2008 00:21:45 +0000
parents 2c835d58faad
children 9de326b3099c
rev   line source
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dcdb175c2829 Merged r2899:2900 from SDL-1.2 branch to trunk: testloadso program.
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1
dcdb175c2829 Merged r2899:2900 from SDL-1.2 branch to trunk: testloadso program.
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2 /* Test program to test dynamic loading with the loadso subsystem.
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3 */
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4
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5 #include <stdio.h>
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6 #include <stdlib.h>
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7
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8 #include "SDL.h"
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10 typedef int (*fntype) (const char *);
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12 int
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13 main(int argc, char *argv[])
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14 {
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15 int retval = 0;
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16 int hello = 0;
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17 const char *libname = NULL;
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18 const char *symname = NULL;
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19 void *lib = NULL;
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20 fntype fn = NULL;
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22 if (argc != 3) {
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23 const char *app = argv[0];
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24 fprintf(stderr, "USAGE: %s <library> <functionname>\n", app);
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25 fprintf(stderr, " %s --hello <lib with puts()>\n", app);
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26 return 1;
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27 }
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28
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29 /* Initialize SDL */
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30 if (SDL_Init(0) < 0) {
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31 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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32 return 2;
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33 }
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35 if (strcmp(argv[1], "--hello") == 0) {
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36 hello = 1;
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37 libname = argv[2];
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38 symname = "puts";
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39 } else {
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40 libname = argv[1];
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41 symname = argv[2];
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42 }
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43
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44 lib = SDL_LoadObject(libname);
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45 if (lib == NULL) {
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46 fprintf(stderr, "SDL_LoadObject('%s') failed: %s\n",
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47 libname, SDL_GetError());
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48 retval = 3;
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49 } else {
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50 fn = (fntype) SDL_LoadFunction(lib, symname);
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51 if (fn == NULL) {
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52 fprintf(stderr, "SDL_LoadFunction('%s') failed: %s\n",
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53 symname, SDL_GetError());
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54 retval = 4;
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55 } else {
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56 printf("Found %s in %s at %p\n", symname, libname, fn);
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57 if (hello) {
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58 printf("Calling function...\n");
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59 fflush(stdout);
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60 fn(" HELLO, WORLD!\n");
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61 printf("...apparently, we survived. :)\n");
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62 printf("Unloading library...\n");
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63 fflush(stdout);
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64 }
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65 }
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66 SDL_UnloadObject(lib);
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67 }
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68 SDL_Quit();
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69 return (0);
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70 }