event.h

// Copyright (C) 2009-2010 Institut de Robòtica i Informàtica Industrial, CSIC-UPC.
// Author Sergi Hernandez  (shernand@iri.upc.edu)
// All rights reserved.
//
// This file is part of iriutils
// iriutils 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.
//
// 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef _EVENT_H
#define _EVENT_H

#include "mutex.h"
#include <string>

class CEvent
{
  private:
    int pipe_fd[2];

    int num_activations;

    std::string event_id;

    CMutex access;
  protected:
    void set_id(const std::string& id);

  public:
    CEvent(const std::string& id);

    CEvent(const std::string& id,bool create_signaled);

    void reset(void);

    void set(void);

    void wait(int timeout_us);

    bool is_set(void);

    int get_num_activations(void);

    std::string get_id(void);

    int get_fd(void);

    virtual ~CEvent();
};

#endif