LockedFile.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 LOCKED_FILE_H
#define LOCKED_FILE_H

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

class File;

class LockedFile
{
  public:
    LockedFile(File *pFile);

    LockedFile(LockedFile &c);

    LockedFile &operator=(const LockedFile &c);

    bool lock(bool bBlock = false);

    void unlock();

    File *getFile();

    size_t getLocker();

  private:
    LockedFile();

    File *m_File;

    bool m_bLocked;

    size_t m_LockerPid;

#ifdef THREADS
    Mutex m_Lock;
#endif
};

#endif