PriorityQueueNode Type — netty Architecture

Source Code

common/src/main/java/io/netty/util/internal/PriorityQueueNode.java lines 22–44

public interface PriorityQueueNode {
    /**
     * This should be used to initialize the storage returned by {@link #priorityQueueIndex(DefaultPriorityQueue)}.
     */
    int INDEX_NOT_IN_QUEUE = -1;

    /**
     * Get the last value set by {@link #priorityQueueIndex(DefaultPriorityQueue, int)} for the value corresponding to
     * {@code queue}.
     * <p>
     * Throwing exceptions from this method will result in undefined behavior.
     */
    int priorityQueueIndex(DefaultPriorityQueue<?> queue);

    /**
     * Used by {@link DefaultPriorityQueue} to maintain state for an element in the queue.
     * <p>
     * Throwing exceptions from this method will result in undefined behavior.
     * @param queue The queue for which the index is being set.
     * @param i The index as used by {@link DefaultPriorityQueue}.
     */
    void priorityQueueIndex(DefaultPriorityQueue<?> queue, int i);
}