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## edu.utah.janosvm.kit.comm.amiga
Class SignalSet

    java.lang.Object
      |
      +--edu.utah.janosvm.kit.comm.amiga.SignalSet

public final class SignalSet
extends java.lang.Object

A SignalSet is a JanosVM implementation of the Amiga's signal system. Basically, it provides a simple, low level, low bandwidth mechanism for threads to communicate with each other.

Field Summary
`static int` | `MAXIMUM_SIGNAL_COUNT`

Constructor Summary
`SignalSet()`

Method Summary
`int` | `allocate()`
`void` | `allocate(int bit)`
`void` | `release(int bit)`
`long` | `setSignal(long newMask)`
`void` | `signal(int bit)`
`java.lang.String` | `toString()`
`long` | `waitFor(long mask)` Wait for one or more of the signals in the mask to be received.
`long` | `waitFor(long mask, long timeout)` Wait for one or more of the signals in the mask to be received, or for a timeout.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### MAXIMUM_SIGNAL_COUNT

    public static final int MAXIMUM_SIGNAL_COUNT

Constructor Detail

### SignalSet

    public SignalSet()

Method Detail

### allocate

    public int allocate()

  Returns:
    A newly allocated signal number.
  Throws:
    Throws - an OutOfSignalsError if there are no more signal bits available.

### allocate

    public void allocate(int bit)

  Parameters:
    `bit` - Allocate the given signal bit.

### release

    public void release(int bit)

  Parameters:
    `bit` - Release the allocated signal bit.

### waitFor

    public long waitFor(long mask,
                        long timeout)

  Wait for one or more of the signals in the mask to be received, or for a timeout.
  Parameters:
    `mask` - The mask of signals to wait on.
    `timeout` - The number of milliseconds to wait for signals.
  Returns:
    The mask of signals received, which will be a subset of the `mask' parameter.

### waitFor

    public long waitFor(long mask)

  Wait for one or more of the signals in the mask to be received.
  Parameters:
    `mask` - The mask of signals to wait on.
  Returns:
    The mask of signals received, which will be a subset of the `mask' parameter.

### signal

    public void signal(int bit)

  Parameters:
    `bit` - The signal bit number to send.

### setSignal

    public long setSignal(long newMask)

### toString

    public java.lang.String toString()

  Overrides:
    toString in class java.lang.Object

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This documentation is Copyright (C) 2000-2001 The University of Utah. All Rights Reserved. See the documentation license for distribution terms and restrictions.
Documentation, software, and mailing lists for the JanosVM can be found at the Janos Project web page: http://www.cs.utah.edu/flux/janos/
Generated on Jun 1, 2001