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
#include <config.h>
 
#ifdef STANDALONE_MUTEXES
 
#include "pedigree/kernel/processor/types.h"
 
class Mutex {
 public:
  Mutex();
  Mutex(bool) = delete;
  ~Mutex();
 
  bool acquire();
  bool tryAcquire();
  void release();
 
  ssize_t getValue();
 
  void* getPrivate() const {
    return m_Private;
  }
 
 private:
  void* m_Private;
};
 
#else
 
#if THREADS
 
#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/process/Semaphore.h"
 
class EXPORTED_PUBLIC Mutex : public Semaphore {
 public:
  Mutex();
  Mutex(bool) = delete;
  ~Mutex();
 
  bool isOwnedByCurrentThread() const;
};
 
#endif  // THREADS
 
#endif  // STANDALONE_MUTEXES
 
#endif  // MUTEX_H