Semaphore.h

/******************************************************************************/
/*                                                                            */
/* Copyright (c) 2010, 2014 Lukasz Bienczyk <lukasz.bienczyk@gmail.com>,      */
/* Radoslaw Kolodziejczyk <radek.kolodziejczyk@gmail.com>,                    */
/* Sylwester Wysocki <sw143@wp.pl>                                            */
/*                                                                            */
/* Permission is hereby granted, free of charge, to any person obtaining a    */
/* copy of this software and associated documentation files (the "Software"), */
/* to deal in the Software without restriction, including without limitation  */
/* the rights to use, copy, modify, merge, publish, distribute, sublicense,   */
/* and/or sell copies of the Software, and to permit persons to whom the      */
/* Software is furnished to do so, subject to the following conditions:       */
/*                                                                            */
/* The above copyright notice and this permission notice shall be included in */
/* all copies or substantial portions of the Software.                        */
/*                                                                            */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   */
/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    */
/* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
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/* DEALINGS IN THE SOFTWARE.                                                  */
/*                                                                            */
/******************************************************************************/

#ifndef Tegenaria_Core_Semaphore_h
#define Tegenaria_Core_Semaphore_h

#include <string>

using std::string;

#ifdef WIN32
# include <windows.h>
#else
# include <semaphore.h>
#endif

namespace Tegenaria
{
  class Semaphore
  {
    public:

    Semaphore(int initValue = 0, const char *name = NULL);

    ~Semaphore();

    int wait(int timeout = -1);

    void signal();

    int tryWait();

    int unwind();

    int unwoundWait(int timeout = -1);

    int getState();

    void setName(const char *name);

    string name_;

  #ifdef WIN32
    HANDLE semaphore_;
  #else
    sem_t semaphore_;
  #endif
  };

} /* namespace Tegenaria */

#endif /* Tegenaria_Core_Semaphore_H */