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DLLoader.cpp
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DLLoader.cpp
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/* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copyright (c) 2011-2020 The plumed team
(see the PEOPLE file at the root of the distribution for a list of names)
See http://www.plumed.org for more information.
This file is part of plumed, version 2.
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"
#include <cstdlib>
#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() {
auto debug=std::getenv("PLUMED_LOAD_DEBUG");
if(debug) std::fprintf(stderr,"delete dlloader\n");
#ifdef __PLUMED_HAS_DLOPEN
while(!handles.empty()) {
int ret=dlclose(handles.top());
if(ret) {
std::fprintf(stderr,"+++ error reported by dlclose: %s\n",dlerror());
}
handles.pop();
}
#endif
if(debug) std::fprintf(stderr,"end delete dlloader\n");
}
DLLoader::DLLoader() {
// do nothing
}
}