InterruptCeilingEmulation

java.lang.Object
- javax.realtime.MonitorControl
- - javax.realtime.device.InterruptMasking
  - - javax.realtime.device.InterruptCeilingEmulation

```
public class InterruptCeilingEmulation
extends InterruptMasking
```
The default monitor control policy for all instances of InterruptServiceRoutine. It is for use synchronizing between second level interrupt handler while the corresponding interrupt line is blocked. The ceiling used depends on the state of the interrupt service routine used as synchronization object: when registered, it is the hardware priority associated with its interrupt line; otherwise, it is the highest software priority available for priority ceiling emulation. When set on anything but an interrupt handler associated with a maskable interrupt, an StaticUnsupportedOperationException is thrown.

See Also:

PriorityCeilingEmulation

- Method Summary
  
  All Methods Static Methods Concrete Methods
  Modifier and Type Method and Description
  
  static InterruptCeilingEmulation instance()
  Obtain the instance of this class for a given interrupt.
  - Methods inherited from class javax.realtime.MonitorControl
    getMonitorControl, getMonitorControl, setMonitorControl, setMonitorControl
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - instance
```
public static InterruptCeilingEmulation instance()
```
    Obtain the instance of this class for a given interrupt. The instance returned is not affected by garbage collection and is universally reachable. It is also effectively immutable.
    
    Returns:
    
    The instance of this class for the use with an instance of InterruptServiceRoutine associate with a maskable interrupt.