StuckThreadDetectionValve (Apache Tomcat 6.0.53 API Documentation)

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org.apache.catalina.valves
Class StuckThreadDetectionValve

java.lang.Object
  org.apache.catalina.valves.ValveBase
      org.apache.catalina.valves.StuckThreadDetectionValve

All Implemented Interfaces:: javax.management.MBeanRegistration, Contained, Valve

public class StuckThreadDetectionValve
extends ValveBase
extends ValveBase

This valve allows to detect requests that take a long time to process, which might indicate that the thread that is processing it is stuck.

Field Summary

Fields inherited from class org.apache.catalina.valves.ValveBase
`container, containerLog, controller, domain, info, mserver, next, oname`

Constructor Summary
`StuckThreadDetectionValve()`

Method Summary
`void`	`backgroundProcess()` Execute a periodic task, such as reloading, etc.
`long[]`	`getStuckThreadIds()`
`java.lang.String[]`	`getStuckThreadNames()`
`int`	`getThreshold()`
`void`	`invoke(Request request, Response response)` The implementation-specific logic represented by this Valve.
`void`	`setThreshold(int threshold)` Specify the threshold (in seconds) used when checking for stuck threads.

Methods inherited from class org.apache.catalina.valves.ValveBase
`createObjectName, event, getContainer, getContainerName, getController, getDomain, getInfo, getNext, getObjectName, getParentName, postDeregister, postRegister, preDeregister, preRegister, setContainer, setController, setNext, setObjectName, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

StuckThreadDetectionValve

public StuckThreadDetectionValve()

Method Detail

setThreshold

public void setThreshold(int threshold)

Specify the threshold (in seconds) used when checking for stuck threads. If <=0, the detection is disabled. The default is 600 seconds.

Parameters:: threshold - The new threshold in seconds

getThreshold

public int getThreshold()

Returns:: The current threshold in seconds
See Also:: setThreshold(int)

invoke

public void invoke(Request request,
                   Response response)
            throws java.io.IOException,
                   javax.servlet.ServletException

The implementation-specific logic represented by this Valve. See the Valve description for the normal design patterns for this method.

This method MUST be provided by a subclass.

Specified by:: invoke in interface Valve
Specified by:: invoke in class ValveBase

Parameters:: request - The servlet request to be processed; response - The servlet response to be created
Throws:: java.io.IOException - if an input/output error occurs; javax.servlet.ServletException - if a servlet error occurs

backgroundProcess

public void backgroundProcess()

Description copied from class: ValveBase

Execute a periodic task, such as reloading, etc. This method will be invoked inside the classloading context of this container. Unexpected throwables will be caught and logged.

Specified by:: backgroundProcess in interface Valve
Overrides:: backgroundProcess in class ValveBase

getStuckThreadIds

public long[] getStuckThreadIds()

getStuckThreadNames

public java.lang.String[] getStuckThreadNames()