BOSS::Module * BOSS_Synthesis::load(const string & name) {
char * errormsg = NULL;
//load the module library
cerr << "BOSS_Synthesis: loading " << name << endl;
lt_dlhandle lib = lt_dlopenext(name.c_str());
if (!lib) {
errormsg = dlerrordup (errormsg);
cerr << "Cannot load library: " << errormsg << endl;
return 0;
}
std::cerr << "retrieving library symbols" << std::endl;
// load the symbols
create_module * create = (create_module*) lt_dlsym(lib, "create");
// the destroy function is by current design not so necessary
// destroy_module * destroy = (destroy_module*) lt_dlsym(lib, "destroy");
if (!create ) { //|| !destroy) {
errormsg = dlerrordup (errormsg);
cerr << "Cannot load symbols: " << errormsg << endl;
return 0;
}
std::cerr << "creating module class instance" << std::endl;
// create an instance of the class
BOSS::Module * module = create(cl, data_base);
return module;
}
//#define Check_Failed_Module 0
exception_t SKY_load_module(const char* module_filename){
exception_t ret;
char **module_name;
lt_dlhandle * handler;
const char* err_str = NULL;
//skyeye_log(Debug_log, __FUNCTION__, "module_filename = %s\n", module_filename);
#ifndef Check_Failed_Module
handler = lt_dlopenext(module_filename);
#else
//handler = dlopen(module_filename, RTLD_LAZY);
handler = dlopen(module_filename, RTLD_NOW);
if(handler == NULL){
err_str = dlerror();
skyeye_log(Error_log, __FUNCTION__, "dll error: %s\n", err_str);
}
return Dll_open_exp;
#endif
if (handler == NULL)
{
err_str = dlerrordup(err_str);
skyeye_log(Warnning_log, __FUNCTION__, "%s\n", err_str);
return Dll_open_exp;
}
module_name = lt_dlsym(handler, "skyeye_module");
if((err_str = dlerrordup(err_str)) != NULL){
skyeye_log(Warnning_log, __FUNCTION__, "dll error %s\n", err_str);
skyeye_log(Warnning_log, __FUNCTION__, "Invalid module in file %s\n", module_filename);
lt_dlclose(handler);
return Invmod_exp;
}
//skyeye_log(Debug_log, __FUNCTION__, "Load module %s\n", *module_name);
ret = register_skyeye_module(*module_name, module_filename, handler);
if(ret != No_exp){
lt_dlclose(handler);
return ret;
}
return No_exp;
}
int
main (int argc, const char *argv[])
{
const char modulepath[1+ PATH_MAX];
const char *errormsg = NULL;
void *module = NULL;
entrypoint *run = NULL;
int errors = 0;
if (argc != 3)
{
fprintf (stderr, "USAGE: main MODULENAME ARGUMENT\n");
exit (EXIT_FAILURE);
}
/* Set the module search path. */
getcwd (modulepath, PATH_MAX);
strcat (modulepath, "/");
strcat (modulepath, argv[1]);
/* Load the module. */
module = dlopen (modulepath, RTLD_NOW);
if (!module)
{
strcat (modulepath, ".so");
module = dlopen (modulepath, RTLD_NOW);
}
if (!module)
errors = 1;
/* Find the entry point. */
if (!errors)
{
run = dlsym (module, "run");
/* In principle, run might legitimately be NULL, so
I don't use `run == NULL' as an error indicator. */
errormsg = dlerrordup (errormsg);
if (errormsg != NULL)
errors = dlclose (module);
}
/* Call the entry point function. */
if (!errors)
{
int result = (*run) (argv[2]);
if (result < 0)
errormsg = strdup ("module entry point execution failed");
else
printf ("\t=> %d\n", result);
}
/* Unload the module, now that we are done with it. */
if (!errors)
errors = dlclose (module);
if (errors)
{
/* Diagnose the encountered error. */
errormsg = dlerrordup (errormsg);
if (!errormsg)
{
fprintf (stderr, "%s: dlerror() failed.\n", argv[0]);
return EXIT_FAILURE;
}
}
if (errormsg)
{
fprintf (stderr, "%s: %s.\n", argv[0], errormsg);
free (errormsg);
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}