Package EDU.oswego.cs.dl.util.concurrent

Class SynchronizedLong

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected long value_  

    • Constructor Summary

      Constructors 
      Constructor Description
      SynchronizedLong​(long initialValue)
      Make a new SynchronizedLong with the given initial value, and using its own internal lock.
      SynchronizedLong​(long initialValue, java.lang.Object lock)
      Make a new SynchronizedLong with the given initial value, and using the supplied lock.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      long add​(long amount)
      Add amount to value (i.e., set value += amount)
      long and​(long b)
      Set value to value & b.
      boolean commit​(long assumedValue, long newValue)
      Set value to newValue only if it is currently assumedValue.
      int compareTo​(long other)  
      int compareTo​(SynchronizedLong other)  
      int compareTo​(java.lang.Object other)  
      long complement()
      Set the value to its complement
      long decrement()
      Decrement the value.
      long divide​(long factor)
      Divide value by factor (i.e., set value /= factor)
      boolean equals​(java.lang.Object other)  
      long get()
      Return the current value
      int hashCode()  
      long increment()
      Increment the value.
      long multiply​(long factor)
      Multiply value by factor (i.e., set value *= factor)
      long negate()
      Set the value to the negative of its old value
      long or​(long b)
      Set value to value | b.
      long set​(long newValue)
      Set to newValue.
      long subtract​(long amount)
      Subtract amount from value (i.e., set value -= amount)
      long swap​(SynchronizedLong other)
      Atomically swap values with another SynchronizedLong.
      java.lang.String toString()  
      long xor​(long b)
      Set value to value ^ b.

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    • Field Detail

      • value_

        protected long value_

    • Constructor Detail

      • SynchronizedLong

        public SynchronizedLong​(long initialValue)
        Make a new SynchronizedLong with the given initial value, and using its own internal lock.

      • SynchronizedLong

        public SynchronizedLong​(long initialValue,
                        java.lang.Object lock)
        Make a new SynchronizedLong with the given initial value, and using the supplied lock.

    • Method Detail

      • get

        public final long get()
        Return the current value

      • set

        public long set​(long newValue)
        Set to newValue.
        Returns:
        the old value

      • commit

        public boolean commit​(long assumedValue,
                      long newValue)
        Set value to newValue only if it is currently assumedValue.
        Returns:
        true if successful

      • swap

        public long swap​(SynchronizedLong other)
        Atomically swap values with another SynchronizedLong. Uses identityHashCode to avoid deadlock when two SynchronizedLongs attempt to simultaneously swap with each other.
        Returns:
        the new value

      • increment

        public long increment()
        Increment the value.
        Returns:
        the new value

      • decrement

        public long decrement()
        Decrement the value.
        Returns:
        the new value

      • add

        public long add​(long amount)
        Add amount to value (i.e., set value += amount)
        Returns:
        the new value

      • subtract

        public long subtract​(long amount)
        Subtract amount from value (i.e., set value -= amount)
        Returns:
        the new value

      • multiply

        public long multiply​(long factor)
        Multiply value by factor (i.e., set value *= factor)
        Returns:
        the new value

      • divide

        public long divide​(long factor)
        Divide value by factor (i.e., set value /= factor)
        Returns:
        the new value

      • negate

        public long negate()
        Set the value to the negative of its old value
        Returns:
        the new value

      • complement

        public long complement()
        Set the value to its complement
        Returns:
        the new value

      • and

        public long and​(long b)
        Set value to value & b.
        Returns:
        the new value

      • or

        public long or​(long b)
        Set value to value | b.
        Returns:
        the new value

      • xor

        public long xor​(long b)
        Set value to value ^ b.
        Returns:
        the new value

      • compareTo

        public int compareTo​(long other)

      • compareTo

        public int compareTo​(java.lang.Object other)
        Specified by:
        compareTo in interface java.lang.Comparable

      • equals

        public boolean equals​(java.lang.Object other)
        Overrides:
        equals in class java.lang.Object

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object