SDL 2.0
testloadso.c File Reference
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"
+ Include dependency graph for testloadso.c:

Go to the source code of this file.

Typedefs

typedef int(* fntype) (const char *)
 

Functions

int main (int argc, char *argv[])
 

Typedef Documentation

◆ fntype

typedef int(* fntype) (const char *)

Definition at line 22 of file testloadso.c.

Function Documentation

◆ main()

int main ( int  argc,
char *  argv[] 
)

Definition at line 25 of file testloadso.c.

26{
27 int retval = 0;
28 int hello = 0;
29 const char *libname = NULL;
30 const char *symname = NULL;
31 void *lib = NULL;
32 fntype fn = NULL;
33
34 if (argc != 3) {
35 const char *app = argv[0];
36 SDL_Log("USAGE: %s <library> <functionname>\n", app);
37 SDL_Log(" %s --hello <lib with puts()>\n", app);
38 return 1;
39 }
40
41 /* Initialize SDL */
42 if (SDL_Init(0) < 0) {
43 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
44 return 2;
45 }
46
47 if (strcmp(argv[1], "--hello") == 0) {
48 hello = 1;
49 libname = argv[2];
50 symname = "puts";
51 } else {
52 libname = argv[1];
53 symname = argv[2];
54 }
55
56 lib = SDL_LoadObject(libname);
57 if (lib == NULL) {
58 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadObject('%s') failed: %s\n",
59 libname, SDL_GetError());
60 retval = 3;
61 } else {
62 fn = (fntype) SDL_LoadFunction(lib, symname);
63 if (fn == NULL) {
64 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadFunction('%s') failed: %s\n",
65 symname, SDL_GetError());
66 retval = 4;
67 } else {
68 SDL_Log("Found %s in %s at %p\n", symname, libname, fn);
69 if (hello) {
70 SDL_Log("Calling function...\n");
71 fflush(stdout);
72 fn(" HELLO, WORLD!\n");
73 SDL_Log("...apparently, we survived. :)\n");
74 SDL_Log("Unloading library...\n");
75 fflush(stdout);
76 }
77 }
79 }
80 SDL_Quit();
81 return retval;
82}
#define SDL_GetError
#define SDL_LoadObject
#define SDL_UnloadObject
#define SDL_LogError
#define SDL_Quit
#define SDL_Init
#define SDL_Log
void * SDL_LoadFunction(void *handle, const char *name)
@ SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
#define NULL
Definition: begin_code.h:167
SDL_bool retval
int(* fntype)(const char *)
Definition: testloadso.c:22

References NULL, retval, SDL_GetError, SDL_Init, SDL_LoadFunction(), SDL_LoadObject, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LogError, SDL_Quit, and SDL_UnloadObject.