testloadso.c
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/*
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Test program to test dynamic loading with the loadso subsystem.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"
typedef int (*fntype) (const char *);
int
main(int argc, char *argv[])
{
int retval = 0;
int hello = 0;
const char *libname = NULL;
const char *symname = NULL;
void *lib = NULL;
fntype fn = NULL;
if (argc != 3) {
const char *app = argv[0];
SDL_Log("USAGE: %s <library> <functionname>\n", app);
SDL_Log(" %s --hello <lib with puts()>\n", app);
return 1;
}
/* Initialize SDL */
if (SDL_Init(0) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return 2;
}
if (strcmp(argv[1], "--hello") == 0) {
hello = 1;
libname = argv[2];
symname = "puts";
} else {
libname = argv[1];
symname = argv[2];
}
lib = SDL_LoadObject(libname);
if (lib == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadObject('%s') failed: %s\n",
libname, SDL_GetError());
retval = 3;
} else {
fn = (fntype) SDL_LoadFunction(lib, symname);
if (fn == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadFunction('%s') failed: %s\n",
symname, SDL_GetError());
retval = 4;
} else {
SDL_Log("Found %s in %s at %p\n", symname, libname, fn);
if (hello) {
SDL_Log("Calling function...\n");
fflush(stdout);
fn(" HELLO, WORLD!\n");
SDL_Log("...apparently, we survived. :)\n");
SDL_Log("Unloading library...\n");
fflush(stdout);
}
}
SDL_UnloadObject(lib);
}
SDL_Quit();
return retval;
}
SDL_GetError
#define SDL_GetError
Definition: SDL_dynapi_overrides.h:113
SDL_LoadObject
#define SDL_LoadObject
Definition: SDL_dynapi_overrides.h:232
SDL_UnloadObject
#define SDL_UnloadObject
Definition: SDL_dynapi_overrides.h:234
SDL_LogError
#define SDL_LogError
Definition: SDL_dynapi_overrides.h:36
retval
SDL_bool retval
Definition: testgamecontroller.c:65
SDL_Log
#define SDL_Log
Definition: SDL_dynapi_overrides.h:31
fntype
int(* fntype)(const char *)
Definition: testloadso.c:22
SDL_Quit
#define SDL_Quit
Definition: SDL_dynapi_overrides.h:58
NULL
#define NULL
Definition: begin_code.h:164
main
int main(int argc, char *argv[])
Definition: testloadso.c:25
SDL_Init
#define SDL_Init
Definition: SDL_dynapi_overrides.h:54
SDL_LoadFunction
void * SDL_LoadFunction(void *handle, const char *name)
SDL.h
SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66