org.jikesrvm.scheduler
Class TimerThread

java.lang.Object
  org.jikesrvm.scheduler.SystemThread
      org.jikesrvm.scheduler.TimerThread

public class TimerThread
extends SystemThread

The timer thread. Although we are using purely native threading, threads need to occasionally be poked for the purposes of sampling and OSR.

It should be noted that the implementation of this class prioritizes unobtrusiveness and lock-freedom over precision. For example, on any given timer release some threads may be missed or poked more than once, with the understanding that if they are missed on one release then they will (with high probability) not be missed on a future release.

It may be that to make the system scale, more than one timer thread will be needed. But for now, this should suffice.

verbose

private static final int verbose

See Also:

Constant Field Values

TimerThread

public TimerThread()

run

public void run()

Specified by:

run in class SystemThread

printExceptionAndDie

private static void printExceptionAndDie(Throwable e)