com.sun.grizzly.util.ThreadPoolMonitoringProbe Maven / Gradle / Ivy
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package com.sun.grizzly.util;
/**
* Monitoring probe providing callbacks that may be invoked by Grizzly
* {@link ExtendedThreadPool} implementations.
*
* @author gustav trede
* @author Alexey Stashok
*
* @since 1.9.19
*/
public interface ThreadPoolMonitoringProbe {
/**
*
* This event may be fired when an {@link ExtendedThreadPool} implementation
* allocates a new managed {@link Thread}.
*
*
* @param threadPoolName the name of the {@link ExtendedThreadPool} being monitored
* @param thread the thread that has been allocated
*/
public void threadAllocatedEvent(String threadPoolName, Thread thread);
/**
*
* This event may be fired when a thread will no longer be managed by the
* {@link ExtendedThreadPool} implementation.
*
*
* @param threadPoolName the name of the {@link ExtendedThreadPool} being monitored
* @param thread the thread that is no longer being managed by the
* {@link ExtendedThreadPool}
*/
public void threadReleasedEvent(String threadPoolName, Thread thread);
/**
*
* This event may be fired when the {@link ExtendedThreadPool} implementation
* has allocated and is managing a number of threads equal to the maximum limit
* of the pool.
*
*
* @param threadPoolName the name of the {@link ExtendedThreadPool} being
* monitored
* @param maxNumberOfThreads the maximum number of threads allowed in the
* {@link ExtendedThreadPool}
*/
public void maxNumberOfThreadsReachedEvent(String threadPoolName, int maxNumberOfThreads);
/**
*
* This event may be fired when a task has been queued for processing.
*
*
* @param task a unit of work to be processed
*/
public void onTaskQueuedEvent(Runnable task);
/**
*
* This event may be fired when a task has been pulled from the queue and
* is about to be processed.
*
* @param task a unit of work that is about to be processed.
*/
public void onTaskDequeuedEvent(Runnable task);
/**
*
* This event may be fired when a dequeued task has completed processing.
*
*
* @param task the unit of work that has completed processing
*/
public void onTaskCompletedEvent(Runnable task);
/**
*
* This event may be fired when the task queue of the {@link ExtendedThreadPool}
* implementation has exceeded its configured size.
*
*
* @param threadPoolName the name of the {@link ExtendedThreadPool} being
* monitored
*/
public void onTaskQueueOverflowEvent(String threadPoolName);
}