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annotate test/testloadso.c @ 4961:c92950635837

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Android has OpenGL ES too...
author Sam Lantinga <slouken@libsdl.org>
date Tue, 04 Jan 2011 20:37:07 -0800
parents 9de326b3099c
children
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
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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 #include <string.h>
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8
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9 #include "SDL.h"
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11 typedef int (*fntype) (const char *);
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13 int
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14 main(int argc, char *argv[])
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15 {
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16 int retval = 0;
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17 int hello = 0;
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18 const char *libname = NULL;
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19 const char *symname = NULL;
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20 void *lib = NULL;
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21 fntype fn = NULL;
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23 if (argc != 3) {
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24 const char *app = argv[0];
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25 fprintf(stderr, "USAGE: %s <library> <functionname>\n", app);
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26 fprintf(stderr, " %s --hello <lib with puts()>\n", app);
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27 return 1;
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28 }
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30 /* Initialize SDL */
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31 if (SDL_Init(0) < 0) {
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32 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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33 return 2;
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34 }
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36 if (strcmp(argv[1], "--hello") == 0) {
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37 hello = 1;
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38 libname = argv[2];
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39 symname = "puts";
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40 } else {
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41 libname = argv[1];
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42 symname = argv[2];
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43 }
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44
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45 lib = SDL_LoadObject(libname);
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46 if (lib == NULL) {
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47 fprintf(stderr, "SDL_LoadObject('%s') failed: %s\n",
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48 libname, SDL_GetError());
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49 retval = 3;
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50 } else {
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51 fn = (fntype) SDL_LoadFunction(lib, symname);
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52 if (fn == NULL) {
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53 fprintf(stderr, "SDL_LoadFunction('%s') failed: %s\n",
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54 symname, SDL_GetError());
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55 retval = 4;
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56 } else {
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57 printf("Found %s in %s at %p\n", symname, libname, fn);
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58 if (hello) {
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59 printf("Calling function...\n");
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60 fflush(stdout);
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61 fn(" HELLO, WORLD!\n");
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62 printf("...apparently, we survived. :)\n");
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63 printf("Unloading library...\n");
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64 fflush(stdout);
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65 }
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66 }
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67 SDL_UnloadObject(lib);
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68 }
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69 SDL_Quit();
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70 return (0);
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71 }