DynamicCellModelLoader.cpp

00001 /*
00002 
00003 Copyright (C) University of Oxford, 2005-2010
00004 
00005 University of Oxford means the Chancellor, Masters and Scholars of the
00006 University of Oxford, having an administrative office at Wellington
00007 Square, Oxford OX1 2JD, UK.
00008 
00009 This file is part of Chaste.
00010 
00011 Chaste is free software: you can redistribute it and/or modify it
00012 under the terms of the GNU Lesser General Public License as published
00013 by the Free Software Foundation, either version 2.1 of the License, or
00014 (at your option) any later version.
00015 
00016 Chaste is distributed in the hope that it will be useful, but WITHOUT
00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
00019 License for more details. The offer of Chaste under the terms of the
00020 License is subject to the License being interpreted in accordance with
00021 English Law and subject to any action against the University of Oxford
00022 being under the jurisdiction of the English Courts.
00023 
00024 You should have received a copy of the GNU Lesser General Public License
00025 along with Chaste. If not, see <http://www.gnu.org/licenses/>.
00026 
00027 */
00028 
00029 #include "DynamicCellModelLoader.hpp"
00030 #include "AbstractDynamicallyLoadableEntity.hpp"
00031 
00032 #include <dlfcn.h>  // For dealing with .so files
00033 
00034 #include "Exception.hpp"
00035 
00036 DynamicCellModelLoader::DynamicCellModelLoader(const std::string& rLoadableModulePath)
00037     : mLoadableModulePath(rLoadableModulePath)
00038 {
00039     // Open the .so file
00040     mpDynamicModule = dlopen(rLoadableModulePath.c_str(), RTLD_NOW);
00041     if (mpDynamicModule == NULL)
00042     {
00043         EXCEPTION("Unable to load .so file '" + rLoadableModulePath + "': " + dlerror());
00044     }
00045 
00046     // Find the cell creation function
00047     dlerror(); // Reset errors
00048     void* p_creation_function = dlsym(mpDynamicModule, "MakeCardiacCell");
00049     // Check it exists
00050     const char* p_error = dlerror();
00051     if (p_error)
00052     {
00053         EXCEPTION("Failed to load cell creation function from .so file '" + rLoadableModulePath
00054                   + "': " + p_error);
00055     }
00056     // Cast to the right type
00057     mpCreationFunction = reinterpret_cast<CellCreationFunctionType*>(p_creation_function);
00058 }
00059 
00060 DynamicCellModelLoader::~DynamicCellModelLoader()
00061 {
00062     if (mpDynamicModule)
00063     {
00064         dlclose(mpDynamicModule);
00065     }
00066 }
00067 
00068 AbstractCardiacCellInterface* DynamicCellModelLoader::CreateCell(boost::shared_ptr<AbstractIvpOdeSolver> pSolver,
00069                                                         boost::shared_ptr<AbstractStimulusFunction> pStimulus)
00070 {
00071     AbstractCardiacCellInterface* p_cell = (*mpCreationFunction)(pSolver, pStimulus);
00072 
00073     AbstractDynamicallyLoadableEntity* p_entity = dynamic_cast<AbstractDynamicallyLoadableEntity*>(p_cell);
00074 
00075     if (p_entity != NULL)
00076     {
00077         p_entity->SetLoader(this);
00078     }
00079     return p_cell;
00080 }
00081 
00082 const std::string DynamicCellModelLoader::GetLoadableModulePath() const
00083 {
00084     return mLoadableModulePath;
00085 }

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