DLLoader.cpp

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/* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   Copyright (c) 2013 The plumed team
   (see the PEOPLE file at the root of the distribution for a list of names)

   See http://www.plumed-code.org for more information.

   This file is part of plumed, version 2.0.

   plumed is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   plumed 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 Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with plumed.  If not, see <http://www.gnu.org/licenses/>.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
#include "DLLoader.h"

#ifdef __PLUMED_HAS_DLOPEN
#include <dlfcn.h>
#endif

namespace PLMD{

bool DLLoader::installed(){
#ifdef __PLUMED_HAS_DLOPEN
  return true;
#else
  return false;
#endif
}


void* DLLoader::load(const std::string&s){
#ifdef __PLUMED_HAS_DLOPEN
  void* p=dlopen(s.c_str(),RTLD_NOW|RTLD_LOCAL);
  if(!p){
    lastError=dlerror();
  } else {
    lastError="";
    handles.push(p);
  }
  return p;
#else
  return NULL;
#endif
}

const std::string & DLLoader::error(){
  return lastError;
}

DLLoader::~DLLoader(){
#ifdef __PLUMED_HAS_DLOPEN
  while(!handles.empty()){
    dlclose(handles.top());
    handles.pop();
  }
#endif
}

DLLoader::DLLoader(){
  // do nothing
}


}