SDL_sysloadso.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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#ifdef SDL_LOADSO_DLOPEN
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* System dependent library loading routines */
#include <stdio.h>
#include <dlfcn.h>
#include "SDL_loadso.h"
void *SDL_LoadObject(const char *sofile)
{
void *handle = dlopen(sofile, RTLD_NOW);
const char *loaderror = (char *)dlerror();
if ( handle == NULL ) {
SDL_SetError("Failed loading %s: %s", sofile, loaderror);
}
return(handle);
}
void *SDL_LoadFunction(void *handle, const char *name)
{
void *symbol = dlsym(handle, name);
if ( symbol == NULL ) {
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#ifdef DLOPEN_NEED_UNDERSCORE
/* append an underscore for platforms that need that. */
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size_t len = 1+SDL_strlen(name)+1;
char *_name = SDL_stack_alloc(char, len);
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_name[0] = '_';
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SDL_strlcpy(&_name[1], name, len);
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symbol = dlsym(handle, _name);
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SDL_stack_free(_name);
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#else
symbol = dlsym(handle, name);
#endif
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if ( symbol == NULL ) {
SDL_SetError("Failed loading %s: %s", name, (const char *)dlerror());
}
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}
return(symbol);
}
void SDL_UnloadObject(void *handle)
{
if ( handle != NULL ) {
dlclose(handle);
}
}
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#endif /* SDL_LOADSO_DLOPEN */