SharedLibrary.cc

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// -*- C++ -*-
//
// Package:     PluginManager
// Class  :     SharedLibrary
// 
// Implementation:
//     <Notes on implementation>
//
// Original Author:  Chris Jones
//         Created:  Thu Apr  5 15:30:15 EDT 2007
//

// system include files
#include <string> /*needed by the following include*/
#include <dlfcn.h>
#include <cerrno>

// user include files
#include "FWCore/PluginManager/interface/SharedLibrary.h"
#include "FWCore/Utilities/interface/Exception.h"

namespace edmplugin {
//
// constants, enums and typedefs
//

//
// static data member definitions
//

//
// constructors and destructor
//
  SharedLibrary::SharedLibrary(const boost::filesystem::path& iName) :
  libraryHandle_(::dlopen(iName.string().c_str(), RTLD_LAZY | RTLD_GLOBAL)),
  path_(iName)
{
    if(libraryHandle_ == nullptr) {
      char const* err = dlerror();
      if(err == nullptr) {
        throw cms::Exception("PluginLibraryLoadError") << "unable to load " << iName.string();
      }
      throw cms::Exception("PluginLibraryLoadError") << "unable to load " << iName.string() << " because " << err;
    }
}

// SharedLibrary::SharedLibrary(const SharedLibrary& rhs)
// {
//    // do actual copying here;
// }

SharedLibrary::~SharedLibrary()
{
}

//
// assignment operators
//
// const SharedLibrary& SharedLibrary::operator=(const SharedLibrary& rhs)
// {
//   //An exception safe implementation is
//   SharedLibrary temp(rhs);
//   swap(rhs);
//
//   return *this;
// }

//
// member functions
//

//
// const member functions
//
bool 
SharedLibrary::symbol(const std::string& iSymbolName, void*& iSymbol) const
{
  if(libraryHandle_ == nullptr) {
    return false;
  }
  iSymbol = dlsym(libraryHandle_, iSymbolName.c_str());
  return (iSymbol != nullptr);
}

//
// static member functions
//
}