# | Line 265 | Line 265 | public class SynchronousQueue<E> extends | |
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265 | * 0 for waiting, 1 for ack, -1 for cancelled. | |
266 | */ | |
267 | static final class Node extends AbstractQueuedSynchronizer { | |
268 | + | private static final long serialVersionUID = -2631493897867746127L; |
269 | + | |
270 | /** Synchronization state value representing that node acked */ | |
271 | private static final int ACK = 1; | |
272 | /** Synchronization state value representing that node cancelled */ |
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