javax.realtime

Class GarbageCollector

java.lang.Object

javax.realtime.GarbageCollector

public abstract class GarbageCollector
extends Object

Jamaica Real-Time Specification for Java class GarbageCollector.

Method Summary

Modifier and Type	Method and Description
abstract RelativeTime	getPreemptionLatency() getPreemptionLatency returns the maximum time required for any schedulable object to preempt ongoing garbage collection activity.

Methods inherited from class java.lang.Object

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

Method Detail

getPreemptionLatency

public abstract RelativeTime getPreemptionLatency()

getPreemptionLatency returns the maximum time required for any schedulable object to preempt ongoing garbage collection activity. Thread of class NoHeapRealtimeThread or AbstractAsyncEventHandlers with option no-heap will not suffer from this preemption delay since these threads can always be executed independently of the state of the garbage collector. Any other thread may be blocked by the garbage collector for the time returned by this function. For JamaicaVM, any thread can preempt garbage collection activity at the normal thread preemption delay specified via the Jamaica builder option -threadPreemption <n>, typically a few hundred machine instructions.

Returns:

the GC preemption latency