SignalThread.h

/*
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * SignalThread.h
 * A thread to handle signals.
 * Copyright (C) 2013 Simon Newton
 */

#ifndef INCLUDE_OLA_THREAD_SIGNALTHREAD_H_
#define INCLUDE_OLA_THREAD_SIGNALTHREAD_H_

#include <signal.h>
#include <ola/Callback.h>
#include <ola/thread/Thread.h>
#include <map>

namespace ola {
namespace thread {

class SignalThread : public ola::thread::Thread {
 public:
 typedef ola::Callback0<void> SignalHandler;

 ~SignalThread();

 // This has to be called before Start(). You can't add signal handlers once
 // the thread is running.
 bool InstallSignalHandler(int signal, SignalHandler *handler);

 protected:
 void* Run();

 private:
 typedef std::map<int, SignalHandler*> SignalMap;

 SignalMap m_signal_handlers;

 bool AddSignals(sigset_t *signals);
 bool BlockSignal(int signal);
};
} // namespace thread
} // namespace ola
#endif // INCLUDE_OLA_THREAD_SIGNALTHREAD_H_