dynare/mex/sources/k_order_perturbation/dynamic_dll.cc

96 lines
2.9 KiB
C++

/*
* Copyright (C) 2008-2012 Dynare Team
*
* This file is part of Dynare.
*
* Dynare is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Dynare 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Dynare. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dynamic_dll.hh"
#include <sstream>
DynamicModelDLL::DynamicModelDLL(const string &modName) throw (DynareException)
{
string fName;
#if !defined(__CYGWIN32__) && !defined(_WIN32)
fName = "./";
#endif
fName += "+" + modName + "/dynamic" + MEXEXT;
try
{
#if defined(__CYGWIN32__) || defined(_WIN32)
dynamicHinstance = LoadLibrary(fName.c_str());
if (dynamicHinstance == NULL)
throw 1;
Dynamic = (DynamicDLLFn) GetProcAddress(dynamicHinstance, "Dynamic");
if (Dynamic == NULL)
{
FreeLibrary(dynamicHinstance); // Free the library
throw 2;
}
#else // Linux or Mac
dynamicHinstance = dlopen(fName.c_str(), RTLD_NOW);
if ((dynamicHinstance == NULL) || dlerror())
{
cerr << dlerror() << endl;
throw 1;
}
Dynamic = (DynamicDLLFn) dlsym(dynamicHinstance, "Dynamic");
if ((Dynamic == NULL) || dlerror())
{
dlclose(dynamicHinstance); // Free the library
cerr << dlerror() << endl;
throw 2;
}
#endif
}
catch (int i)
{
ostringstream msg;
msg << "Error when loading " << fName << " (";
if (i == 1)
msg << "can't dynamically load the file";
if (i == 2)
msg << "can't locate the 'Dynamic' symbol";
msg << ")";
throw DynareException(__FILE__, __LINE__, msg.str());
}
catch (...)
{
throw DynareException(__FILE__, __LINE__, string("Can't find Dynamic function in ") + fName);
}
}
DynamicModelDLL::~DynamicModelDLL()
{
#if defined(__CYGWIN32__) || defined(_WIN32)
bool result = FreeLibrary(dynamicHinstance);
if (result == 0)
throw DynareException(__FILE__, __LINE__, string("Can't free the *_dynamic DLL"));
#else
dlclose(dynamicHinstance);
#endif
}
void
DynamicModelDLL::eval(const Vector &y, const Vector &x, const Vector &modParams, const Vector &ySteady,
Vector &residual, TwoDMatrix *g1, TwoDMatrix *g2, TwoDMatrix *g3) throw (DynareException)
{
Dynamic(y.base(), x.base(), 1, modParams.base(), ySteady.base(), 0, residual.base(), g1->base(),
g2 == NULL ? NULL : g2->base(), g3 == NULL ? NULL : g3->base());
}