[POOL-159] GenericObjectPool: Add a getNumWaiters() method for monitoring purposes

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5, 1.5.1, 1.5.2, 1.5.3, 1.5.4
• Fix Version/s: 2.0
• Labels: monitoring
• Assignee: Unassigned
• Reporter: Mike Muller
• Created: 21/Feb/10 18:15
• Updated: 31/Dec/14 16:31
• Resolved: 14/Dec/11 22:47

Description

I would like to be able to determine the number of threads waiting to obtain an object from the pool for monitoring purposes. This would be most applicable when the WHEN_EXHAUSTED_BLOCK option is used. I propose the following method:

/**

• Return the number of threads currently waiting for an object from this pool.
  *
• @return the number of threads currently waiting for an object from this pool
  */

public synchronized int getNumWaiters()

{ return _allocateQueue.size(); }

Issue Links

• is related to: POOL-172 Add JMX (MBean) management and monitoring