Mutex.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef MUTEX_H
#define MUTEX_H

#ifdef STANDALONE_MUTEXES

#include "pedigree/kernel/processor/types.h"

class Mutex
{
  public:
    Mutex(bool bLocked = false);
    ~Mutex();

    bool acquire();
    bool tryAcquire();
    void release();

    ssize_t getValue();

    void *getPrivate() const
    {
        return m_Private;
    }

  private:
    void *m_Private;
};

#else

#ifdef THREADS

#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/process/Semaphore.h"

class EXPORTED_PUBLIC Mutex : public Semaphore
{
  public:
    Mutex(bool bLocked = false);
    ~Mutex();
};

#endif  // THREADS

#endif  // STANDALONE_MUTEXES

#endif  // MUTEX_H