aria2/src/HandleRegistry.h

/* <!-- copyright */
/*
 * aria2 - The high speed download utility
 *
 * Copyright (C) 2006 Tatsuhiro Tsujikawa
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.
 */
/* copyright --> */
#ifndef _D_HANDLE_REGISTRY_H_
#define _D_HANDLE_REGISTRY_H_

#include "common.h"
#include "SharedHandle.h"
#include <map>

namespace aria2 {

template<typename K, typename T>
class HandleRegistry {
  typedef std::map<K, SharedHandle<T> > HandleMap;
private:
  HandleMap handleMap;
public:
  void registerHandle(const K& key, const SharedHandle<T>& obj) {
    unregisterHandle(key);
    typename HandleMap::value_type p(key, obj);
    handleMap.insert(p);
  }

  void unregisterHandle(const K& key) {
    handleMap.erase(key);
  }

  SharedHandle<T> getHandle(const K& key) {
    typename HandleMap::const_iterator itr = handleMap.find(key);
    if(itr == handleMap.end()) {
      return 0;
    } else {
      return itr->second;
    }
  }

  void clear() {
    handleMap.clear();
  }
};

} // namespace aria2

#endif // _D_HANDLE_REGISTRY_H_