/*
* dlfcn-win32
* Copyright (c) 2007 Ramiro Polla
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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
* Lesser General Public License for more details.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include "dlfcn.h"
/* This is what this test does:
* - Open library with RTLD_GLOBAL
* - Get global object
* - Get symbol from library through library object <- works
* - Run function if it worked
* - Get symbol from library through global object <- works
* - Run function if it worked
* - Close library
* - Open library with RTLD_LOCAL
* - Get symbol from library through library object <- works
* - Run function if it worked
* - Get symbol from library through global object <- fails
* - Run function if it worked
* - Open library again (without closing it first) with RTLD_GLOBAL
* - Get symbol from library through global object <- works
* - Close library
* - Close global object
*/
int main()
{
void *global;
void *library;
char *error;
int (*function)( void );
int ret;
library = dlopen( "testdll.dll", RTLD_GLOBAL );
if( !library )
{
error = dlerror( );
printf( "Could not open library globally: %s\n", error ? error : "" );
}
else
printf( "Opened library globally: %p\n", library );
global = dlopen( 0, RTLD_GLOBAL );
if( !global )
{
error = dlerror( );
printf( "Could not open global handle: %s\n", error ? error : "" );
}
else
printf( "Got global handle: %p\n", global );
function = dlsym( library, "function" );
if( !function )
{
error = dlerror( );
printf( "Could not get symbol from library handle: %s\n",
error ? error : "" );
}
else
printf( "Got symbol from library handle: %p\n", function );
if( function )
function( );
function = dlsym( global, "function" );
if( !function )
{
error = dlerror( );
printf( "Could not get symbol from global handle: %s\n",
error ? error : "" );
}
else
printf( "Got symbol from global handle: %p\n", function );
if( function )
function( );
ret = dlclose( library );
if( ret )
{
error = dlerror( );
printf( "Could not close library: %s\n", error ? error : "" );
}
else
printf( "Closed library.\n" );
library = dlopen( "testdll.dll", RTLD_LOCAL );
if( !library )
{
error = dlerror( );
printf( "Could not open library locally: %s\n", error ? error : "" );
}
else
printf( "Opened library locally: %p\n", library );
function = dlsym( library, "function" );
if( !function )
{
error = dlerror( );
printf( "Could not get symbol from library handle: %s\n",
error ? error : "" );
}
else
printf( "Got symbol from library handle: %p\n", function );
if( function )
function( );
function = dlsym( global, "function" );
if( !function )
{
error = dlerror( );
printf( "Could not get symbol from global handle: %s\n",
error ? error : "" );
}
else
printf( "Got symbol from global handle: %p\n", function );
if( function )
function( );
ret = dlclose( library );
if( ret )
{
error = dlerror( );
printf( "Could not close library: %s\n", error ? error : "" );
}
else
printf( "Closed library.\n" );
ret = dlclose( global );
if( ret )
{
error = dlerror( );
printf( "Could not close global handle: %s\n", error ? error : "" );
}
else
printf( "Closed global handle.\n" );
return 0;
}
