org.apache.activemq.artemis.utils.critical

Interface CriticalComponent

All Known Implementing Classes:

CriticalComponentImpl

public interface CriticalComponent

A Critical component enters and leaves a critical state. You update a long every time you enter a critical path you update a different long with a System.nanoTime every time you leave that path. If the enterCritical > leaveCritical at any point, then you need to measure the timeout. if the system stops responding, then you have something irresponsive at the system.

Method Summary

Modifier and Type	Method and Description
boolean	checkExpiration(long timeout, boolean reset) Check if the component is expired at a given timeout..
default void	enterCritical(int path) please save the time you entered here.
default CriticalAnalyzer	getCriticalAnalyzer()
default void	leaveCritical(int path) please save the time you entered here Use volatile variables.

Method Detail

getCriticalAnalyzer

default CriticalAnalyzer getCriticalAnalyzer()

enterCritical

default void enterCritical(int path)

please save the time you entered here. Use volatile variables. No locks through anywhere.

leaveCritical

default void leaveCritical(int path)

please save the time you entered here Use volatile variables. No locks through anywhere.

checkExpiration

boolean checkExpiration(long timeout,
                        boolean reset)

Check if the component is expired at a given timeout.. on any of its paths.

Parameters:

timeout - - the timeout to check if the component is expired

reset - - true to reset the component timer if it is expired

Returns:

-1 if it's ok, or the number of the path it failed