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#ifdef __linux__
#ifndef DL_MODEL_HPP
#define DL_MODEL_HPP
#define OPT_HEADER
#include <core/fitter.hpp>
#include <cmath>
#include <iostream>
#include <string>
#include <sstream>
#include <dlfcn.h>
namespace opt_utilities
{
template <typename T>
class dl_model
:public model<T,T,std::vector<T>,std::string>
{
private:
T (*calc_model)(T x,const T* p);
int nparams;
mutable void* handle;
private:
model<T,T,std::vector<T> >* do_clone()const
{
dl_model<T>* result=new dl_model<T>(*this);
this->handle=NULL;
return result;
}
const char* do_get_type_name()const
{
return "shared object wrapping model";
}
// public:
public:
dl_model()
:handle(NULL)
{}
public:
dl_model(const char* file_name)
:handle(NULL)
{
handle=dlopen(file_name,RTLD_LAZY);
if(!handle)
{
throw opt_exception("faild loading object");
}
calc_model=(T (*)(T,const T*))dlsym(handle,"calc_model");
if(!calc_model)
{
throw opt_exception("symble undefined");
}
const char* (*get_param_name)(int)
=(const char* (*)(int))dlsym(handle,"get_param_name");
if(!get_param_name)
{
throw opt_exception("symble undefined");
}
int (*get_num_params)()
=(int (*)())dlsym(handle,"get_num_params");
if(!get_num_params)
{
throw opt_exception("symble undefined");
if(!get_num_params)
{
throw opt_exception("symble undefined");
} }
T (*get_default_value)(int)
=(T (*)(int))dlsym(handle,"get_default_value");
if(!get_default_value)
{
throw opt_exception("symble undefined");
}
nparams=get_num_params();
for(int i=0;i!=nparams;++i)
{
this->push_param_info(param_info<std::vector<T> >(get_param_name(i),
get_default_value(i)));
}
}
~dl_model()
{
if(handle)
{
dlclose(handle);
}
}
void bind(const char* file_name)
{
if(handle)
{
dlclose(handle);
}
this->clear_param_info();
handle=dlopen(file_name,RTLD_LAZY);
if(!handle)
{
throw opt_exception("faild loading object");
}
calc_model=(T (*)(T,const T*))dlsym(handle,"calc_model");
if(!calc_model)
{
throw opt_exception("symble undefined");
}
const char* (*get_param_name)(int)
=(const char* (*)(int))dlsym(handle,"get_param_name");
if(!get_param_name)
{
throw opt_exception("symble undefined");
}
int (*get_num_params)()
=(int (*)())dlsym(handle,"get_num_params");
if(!get_num_params)
{
throw opt_exception("symble undefined");
}
T (*get_default_value)(int)
=(T (*)(int))dlsym(handle,"get_default_value");
if(!get_default_value)
{
throw opt_exception("symble undefined");
}
nparams=get_num_params();
for(int i=0;i!=nparams;++i)
{
this->push_param_info(param_info<std::vector<T> >(get_param_name(i),
get_default_value(i)));
}
}
T do_eval(const T& x,const std::vector<T>& param)
{
if(handle==NULL)
{
throw opt_exception("dl object unloaded");
}
return calc_model(x,&get_element(param,0));
}
std::string do_to_string()const
{
return "Dynamical load model\n"
"Should be loaded from an shared object file\n";
}
};
}
#endif
#endif
//EOF
|
