org.rhq.enterprise.agent
Class VMHealthCheckThread

java.lang.Object
  java.lang.Thread
      org.rhq.enterprise.agent.VMHealthCheckThread

All Implemented Interfaces:

Runnable

public class VMHealthCheckThread
extends Thread

This is a thread that will periodically check the health of the VM (e.g. check the memory usage within the VM to detect if memory is critically low), and if the health is poor it will put the agent into hibernate mode, which will essentially shutdown the agent, let it pause for some amount of time, then restart the agent. This will hopefully clear up the poor VM condition.

Author:

John Mazzitelli

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

VMHealthCheckThread(AgentMain agent)

Method Summary

void	run()
void	stopChecking() Tells this thread to stop checking.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

VMHealthCheckThread

public VMHealthCheckThread(AgentMain agent)

Method Detail

stopChecking

public void stopChecking()

Tells this thread to stop checking. This will block and wait for the thread to die.

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread