Examples of java.util.concurrent.CopyOnWriteArrayList$ListIteratorImpl

java.util.concurrent.CopyOnWriteArrayList
list iterator implementation, when created gets snapshot of the list, so never throws ConcurrentModificationException

                // no recorded local node id, generating a new one and saving it
                id = generate();
                logger.info("No saved local node id, using newly generated: {}", id);
                SystemTable.writeCurrentLocalNodeId(null, id, System.currentTimeMillis());
                current = new AtomicReference<NodeId>(id);
                olds = new CopyOnWriteArrayList();
            }
            else
            {
                logger.info("Saved local node id: {}", id);
                current = new AtomicReference<NodeId>(id);
                olds = new CopyOnWriteArrayList(SystemTable.getOldLocalNodeIds());
            }
        }

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                // no recorded local node id, generating a new one and saving it
                id = generate();
                logger.info("No saved local node id, using newly generated: {}", id);
                SystemTable.writeCurrentLocalNodeId(null, id, System.currentTimeMillis());
                current = new AtomicReference<NodeId>(id);
                olds = new CopyOnWriteArrayList();
            }
            else
            {
                logger.info("Saved local node id: {}", id);
                current = new AtomicReference<NodeId>(id);
                olds = new CopyOnWriteArrayList(SystemTable.getOldLocalNodeIds());
            }
        }

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    /**
     * Return a new concurrent container for listeners. Uses a 
     * {@link CopyOnWriteArrayList} by default.
     */
    protected Collection newListenerCollection() {
        return new CopyOnWriteArrayList();
    }

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     * a new instance and initialize it.
     * @param serviceClass the service interface
     * @param provider the provider of that service.
     */
    public <T> void registerRunningService(Class<T> serviceClass, T provider) {
        CopyOnWriteArrayList rs = runningServices.get(serviceClass);
        if (rs==null) {
            rs = new CopyOnWriteArrayList<T>();
            CopyOnWriteArrayList existing = runningServices.putIfAbsent(serviceClass, rs);
            if(existing!=null)
                rs = existing;
        }
        rs.add(provider);
    }

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    /**
     * Removes a running service, this is useful when a service instance is no longer
     * available as a provider of a service.
     */
    public <T> boolean unregisterRunningService(Class<T> serviceClass, T provider) {
        CopyOnWriteArrayList rs = runningServices.get(serviceClass);
        if (rs==null) {
            return false;
        }
        return rs.remove(provider);
    }

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                // no recorded local node id, generating a new one and saving it
                id = generate();
                logger.info("No saved local node id, using newly generated: {}", id);
                SystemTable.writeCurrentLocalNodeId(null, id, FBUtilities.timestampMicros());
                current = new AtomicReference<NodeId>(id);
                olds = new CopyOnWriteArrayList();
            }
            else
            {
                logger.info("Saved local node id: {}", id);
                current = new AtomicReference<NodeId>(id);
                olds = new CopyOnWriteArrayList(SystemTable.getOldLocalNodeIds());
            }
        }

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   /**
    * Defines the concurrent list implementation
    */
   public static final List createCopyOnWriteList()
   {
      return new CopyOnWriteArrayList();
   }

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        }
    }


    public <T extends ConfigObjectType<T, C>, C extends ConfiguredObject<T, C>> void addConfigEventListener(T type, ConfigEventListener<T,C> listener)
    {
        CopyOnWriteArrayList listeners = _listenerMap.get(type);
        if(listeners == null)
        {
            listeners = new CopyOnWriteArrayList();
            CopyOnWriteArrayList oldListeners = _listenerMap.putIfAbsent(type, listeners);
            if(oldListeners != null)
            {
                listeners = oldListeners;
            }

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    }


    public <T extends ConfigObjectType<T, C>, C extends ConfiguredObject<T, C>> void removeConfigEventListener(T type, ConfigEventListener<T,C> listener)
    {
        CopyOnWriteArrayList listeners = _listenerMap.get(type);
        if(listeners != null)
        {
            listeners.remove(listener);
        }
    }

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        }
        return argsList;
    }


    public static List SafeList(Object... args) {
        final List argsList = new CopyOnWriteArrayList();
        for (Object arg : args) {
            argsList.add(arg);
        }
        return argsList;
    }

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