Class BitField

  • All Implemented Interfaces:
    Serializable

    public final class BitField
    extends Object
    implements Serializable
    This class manages huge bit fields. It is much faster than BitSet and was specifically developed to be used with huge bit sets in ISnapshot (e.g. needed in virtual GC traces). Out of performance reasons no method does any parameter checking, i.e. only valid values are expected.
    See Also:
    Serialized Form
    • Constructor Detail

      • BitField

        public BitField​(int size)
        Creates a bit field with the given number of bits. Size is expected to be positive - out of performance reasons no checks are done!
        Parameters:
        size - the maximum size of the BitField
    • Method Detail

      • set

        public final void set​(int index)
        Sets the bit on the given index. Index is expected to be in range - out of performance reasons no checks are done!
        Parameters:
        index - The 0-based index into the BitField.
      • clear

        public final void clear​(int index)
        Clears the bit on the given index. Index is expected to be in range - out of performance reasons no checks are done!
        Parameters:
        index - The 0-based index into the BitField.
      • get

        public final boolean get​(int index)
        Gets the bit on the given index. Index is expected to be in range - out of performance reasons no checks are done!
        Parameters:
        index - The 0-based index into the BitField.
        Returns:
        true if the BitField was set, false if it was cleared or never set.