/*
  ==============================================================================

   This file is part of the JUCE library - "Jules' Utility Class Extensions"
   Copyright 2004-6 by Raw Material Software ltd.

  ------------------------------------------------------------------------------

   JUCE can be redistributed and/or modified under the terms of the
   GNU General Public License, as published by the Free Software Foundation;
   either version 2 of the License, or (at your option) any later version.

   JUCE 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with JUCE; if not, visit www.gnu.org/licenses or write to the
   Free Software Foundation, Inc., 59 Temple Place, Suite 330, 
   Boston, MA 02111-1307 USA

  ------------------------------------------------------------------------------

   If you'd like to release a closed-source product which uses JUCE, commercial
   licenses are also available: visit www.rawmaterialsoftware.com/juce for
   more information.

  ==============================================================================
*/

#ifndef __JUCE_SCOPEDWRITELOCK_JUCEHEADER__
#define __JUCE_SCOPEDWRITELOCK_JUCEHEADER__

#include "juce_ReadWriteLock.h"


//==============================================================================
/**
    Automatically locks and unlocks a ReadWriteLock object.

    Use one of these as a local variable to control access to a ReadWriteLock.

    e.g. @code

    ReadWriteLock myLock;

    for (;;)
    {
        const ScopedWriteLock myScopedLock (myLock);
        // myLock is now locked

        ...do some stuff...

        // myLock gets unlocked here.
    }
    @endcode

    @see ReadWriteLock, ScopedReadLock
*/
class JUCE_API  ScopedWriteLock
{
public:
    //==============================================================================
    /** Creates a ScopedWriteLock.

        As soon as it is created, this will call ReadWriteLock::enterWrite(), and
        when the ScopedWriteLock object is deleted, the ReadWriteLock will
        be unlocked.

        Make sure this object is created and deleted by the same thread,
        otherwise there are no guarantees what will happen! Best just to use it
        as a local stack object, rather than creating one with the new() operator.
    */
    inline ScopedWriteLock (const ReadWriteLock& lock) throw()       : lock_ (lock) { lock.enterWrite(); }

    /** Destructor.

        The ReadWriteLock's exitWrite() method will be called when the destructor is called.

        Make sure this object is created and deleted by the same thread,
        otherwise there are no guarantees what will happen!
    */
    inline ~ScopedWriteLock() throw()                                { lock_.exitWrite(); }


private:
    //==============================================================================
    const ReadWriteLock& lock_;

    ScopedWriteLock (const ScopedWriteLock&);
    const ScopedWriteLock& operator= (const ScopedWriteLock&);
};


#endif   // __JUCE_SCOPEDWRITELOCK_JUCEHEADER__
