Package org.jcsp.net2

Class BarrierManager

  • final class BarrierManager
extends java.lang.Object
    Manages the networked Barriers in the system. This object wraps a Hashtable containing the NetBarrier data objects, and manages the allocation and removal of NetBarrier front ends within the JCSP networking architecture. For information on the NetBarrier, see the appropriate documentation.
    See Also:
    NetBarrier

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.util.Hashtable barriers
      The table containing the Barriers.
      private static int index
      The index for the next Barrier to be created.
      private static BarrierManager instance
      Singleton instance of the BarrierManager

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private BarrierManager()
      Private default constructor.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      (package private) void create​(int idx, BarrierData bd)
      Stores a barrier with the given index in the table.
      (package private) void create​(BarrierData bd)
      Allocates a new number to the Barrier, and stores it in the table.
      (package private) BarrierData getBarrier​(int idx)
      Retrieves a barrier from the table
      (package private) static BarrierManager getInstance()
      Allows getting of the singleton instance.
      (package private) void removeBarrier​(BarrierData data)
      Removes the given barrier from the table of barriers.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • index

        private static int index
        The index for the next Barrier to be created. We start at 50 as it allows us to have up to 50 default Barriers with set numbers.

      • barriers

        private final java.util.Hashtable barriers
        The table containing the Barriers. An Integer (object wrapped int) is used as the key, and the BarrierData as the value.

      • instance

        private static BarrierManager instance
        Singleton instance of the BarrierManager

    • Constructor Detail

      • BarrierManager

        private BarrierManager()
        Private default constructor. Used for the singleton instance.

    • Method Detail

      • getInstance

        static BarrierManager getInstance()
        Allows getting of the singleton instance.
        Returns:
        The singleton instance of the BarrierManager

      • create

        void create​(BarrierData bd)
        Allocates a new number to the Barrier, and stores it in the table.
        Parameters:
        bd - The BarrierData for the Barrier

      • create

        void create​(int idx,
            BarrierData bd)
     throws java.lang.IllegalArgumentException
        Stores a barrier with the given index in the table.
        Parameters:
        idx - The index to use for the barrier
        bd - The BarrierData representing the barrier
        Throws:
        java.lang.IllegalArgumentException - If a barrier of the given index already exists.

      • getBarrier

        BarrierData getBarrier​(int idx)
        Retrieves a barrier from the table
        Parameters:
        idx - Index in the table to retrieve the barrier from.
        Returns:
        The BarrierData object for the barrier.

      • removeBarrier

        void removeBarrier​(BarrierData data)
        Removes the given barrier from the table of barriers.
        Parameters:
        data - The BarrierData object of the barrier to be removed