sync-classlock.hpp

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/*
  SYNC-CLASSLOCK.hpp  -  special case of object based locking tied directly to a type

   Copyright (C)
     2008,            Hermann Vosseler <Ichthyostega@web.de>
     2023,            Hermann Vosseler <Ichthyostega@web.de>

  **Lumiera** 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. See the file COPYING for further details.

*/

#ifndef LIB_SYNC_CLASSLOCK_H
#define LIB_SYNC_CLASSLOCK_H

#include "lib/nobug-init.hpp"
#include "lib/zombie-check.hpp"
#include "lib/meta/util.hpp"
#include "lib/sync.hpp"


namespace lib {
  
  
  template<class X, class CONF = RecursiveLock_NoWait>
  class ClassLock 
    : public Sync<CONF>::Lock
    {
      using Lock    = typename Sync<CONF>::Lock;
      using Monitor = typename sync::Monitor<CONF>;
      
      struct PerClassMonitor : Monitor {};
      
      Monitor&
      getPerClassMonitor()
        {
          static PerClassMonitor classMonitor;
          static ZombieCheck zombieCheck{util::typeStr(this)};
          
          zombieCheck();
          return classMonitor;
        }
      
    public:
      ClassLock()
        : Lock{getPerClassMonitor()}
        { }
    };
  
  
} // namespace lib
#endif /*LIB_SYNC_CLASSLOCK_H*/