lock.h

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/****
 Active Objects v4.2
 Copyright (C) 2006-2010 Werner Van Belle
 http://active.yellowcouch.org/

 This program is free software; you can redistribute it and/or modify
 it 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.

 This program 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 this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
****/
#ifndef __loaded__lock_h__
#define __loaded__lock_h__
using namespace std;
#line 1 "lock.h++"
#include <string>
#include <pthread.h>
#include <stdlib.h>
#include <assert.h>
#include <vector>
#include <queue>
#include <time.h>
#include "cmpxchg.h"
using namespace std;

class Lock
{
public:
  volatile void * locked;
  string who;
  bool deleted;
  Lock() : locked(NULL)
  {
    deleted=false;
  };

  bool try_lock(string w);
  void wait_lock(string w);
  void unlock();
  virtual ~Lock()
  {
    deleted=true;
  }
};

class AutoLock
{
  Lock& lock;
public:
  AutoLock(Lock&lock, string l): lock(lock)
  {
    lock.wait_lock(l);
  }
  AutoLock(Lock*lock, string l): lock(*lock)
  {
    lock->wait_lock(l);
  };
  ~AutoLock()
  {
    lock.unlock();
  }
};

#define DamnPreprocessor(a) #a
#define Synchronized_(a,b,c) AutoLock tmp_auto_locker(a,#a "_at_" b DamnPreprocessor(c))
#define Synchronized(a) Synchronized_(a,__FILE__, __LINE__)

#endif // __loaded__lock_h__

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