Library.cpp

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/*
 * Library.cpp
 *
 *  This file is part of the HausmiSEP project
 *
 *  Copyright (C) 2012, 2013 Marco Alvarado (malvcr@gmail.com)
 *
 *  This program 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.
 *
 *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <HSEP/Library.h>

#include <dlfcn.h>

namespace HSEP {

    Library::Library(const char* pType, string& pPathRef) : HSEPObject(pType) {

        dlerror();
        aHandlerPtr = dlopen(pPathRef.c_str(), RTLD_LAZY);
        if (nullptr != aHandlerPtr) {
            setValid();
        }
        else {
            setInvalid();
            setLastError(dlerror());
        }
        dlerror();

    } // Library constructor

    Library::~Library() {

        if (valid()) {
            dlclose(aHandlerPtr);
        }

    } // Library destructor

    void* Library::getMethodPtr(string& pMethodNameRef) {

        void* vMethodPtr = nullptr;

        if (valid()) {
            vMethodPtr = dlsym(aHandlerPtr,pMethodNameRef.c_str());
        }
        return vMethodPtr;

    } // Library::getMethod

    void Library::invalidate() {

        if (valid()) {
            dlclose(aHandlerPtr);
            setInvalid();
        }

    } // Library::invalidate

} // HSEP namespace