com.sun.grizzly.util
Interface ThreadPoolMonitoringProbe

public interface ThreadPoolMonitoringProbe

Monitoring probe providing callbacks that may be invoked by Grizzly ExtendedThreadPool implementations.

Since:

1.9.19

Author:

gustav trede, Alexey Stashok

Method Summary

void	maxNumberOfThreadsReachedEvent(String threadPoolName, int maxNumberOfThreads) This event may be fired when the ExtendedThreadPool implementation has allocated and is managing a number of threads equal to the maximum limit of the pool.
void	onTaskCompletedEvent(Runnable task) This event may be fired when a dequeued task has completed processing.
void	onTaskDequeuedEvent(Runnable task) This event may be fired when a task has been pulled from the queue and is about to be processed.
void	onTaskQueuedEvent(Runnable task) This event may be fired when a task has been queued for processing.
void	onTaskQueueOverflowEvent(String threadPoolName) This event may be fired when the task queue of the ExtendedThreadPool implementation has exceeded its configured size.
void	threadAllocatedEvent(String threadPoolName, Thread thread) This event may be fired when an ExtendedThreadPool implementation allocates a new managed Thread.
void	threadReleasedEvent(String threadPoolName, Thread thread) This event may be fired when a thread will no longer be managed by the ExtendedThreadPool implementation.

Method Detail

threadAllocatedEvent

void threadAllocatedEvent(String threadPoolName,
                          Thread thread)

This event may be fired when an ExtendedThreadPool implementation allocates a new managed Thread.

Parameters:

threadPoolName - the name of the ExtendedThreadPool being monitored

thread - the thread that has been allocated

threadReleasedEvent

void threadReleasedEvent(String threadPoolName,
                         Thread thread)

This event may be fired when a thread will no longer be managed by the ExtendedThreadPool implementation.

Parameters:

threadPoolName - the name of the ExtendedThreadPool being monitored

thread - the thread that is no longer being managed by the ExtendedThreadPool

maxNumberOfThreadsReachedEvent

void maxNumberOfThreadsReachedEvent(String threadPoolName,
                                    int maxNumberOfThreads)

This event may be fired when the ExtendedThreadPool implementation has allocated and is managing a number of threads equal to the maximum limit of the pool.

Parameters:

threadPoolName - the name of the ExtendedThreadPool being monitored

maxNumberOfThreads - the maximum number of threads allowed in the ExtendedThreadPool

onTaskQueuedEvent

void onTaskQueuedEvent(Runnable task)

This event may be fired when a task has been queued for processing.

Parameters:

task - a unit of work to be processed

onTaskDequeuedEvent

void onTaskDequeuedEvent(Runnable task)

This event may be fired when a task has been pulled from the queue and is about to be processed.

Parameters:

task - a unit of work that is about to be processed.

onTaskCompletedEvent

void onTaskCompletedEvent(Runnable task)

This event may be fired when a dequeued task has completed processing.

Parameters:

task - the unit of work that has completed processing

onTaskQueueOverflowEvent

void onTaskQueueOverflowEvent(String threadPoolName)

This event may be fired when the task queue of the ExtendedThreadPool implementation has exceeded its configured size.

Parameters:

threadPoolName - the name of the ExtendedThreadPool being monitored