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Re: Inaccurate active session count in JavaMonitor (Solved)



Could not find isLocked() method in MultiECLockManager. Is it a customized method or my version is older:

/* MultiECLockManager.java created by email@hidden on Mon 21-Jul-2003 */

methods available are:
lock
unlock
registerEditingContext
unregisterEditingContext
makeStrongReferences
findReference
emptyUnregisterQueue
sameThreadAssert

Cheers

Cheong Hee

----- Original Message ----- From: "Chuck Hill" <email@hidden>
To: "Cheong Hee (Gmail)" <email@hidden>
Cc: <email@hidden>
Sent: Tuesday, July 21, 2009 10:04 PM
Subject: Re: Inaccurate active session count in JavaMonitor (Solved)




On Jul 21, 2009, at 2:44 AM, Cheong Hee (Gmail) wrote:

Yeap, exception found.

lockManager.unlock() throws IllegalStateException when lock count is zero.

Which says to me that it was not locked to begin with. Try

if (lockManager.isLocked()) {
    lockManager.unlock();
}


When the lock count is > 1, MultiEC lock manager is happier to unlock all ECs, but not when lock count=0. Try to relate why the lock count=0 is handled by exception. Is it acting like an insurance to alert the users that probably error occur when multi- ECs has registered (and assumed locked), but when no lock is found when called unlock(). Should it or not throwing exception when lock count = 0?

The throw is correct. It ensures that your code has balanced calls to lock and unlock.


Great thanks, Chuck and it clears doubt on my bad coding.


You are welcome.

Chuck


-- Chuck Hill Senior Consultant / VP Development

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References: 
 >Re: Inaccurate active session count in JavaMonitor (From: "Cheong Hee (Gmail)" <email@hidden>)
 >Re: Inaccurate active session count in JavaMonitor (From: Chuck Hill <email@hidden>)
 >Re: Inaccurate active session count in JavaMonitor (From: "Cheong Hee (Gmail)" <email@hidden>)
 >Re: Inaccurate active session count in JavaMonitor (From: Chuck Hill <email@hidden>)
 >Re: Inaccurate active session count in JavaMonitor (Solved) (From: "Cheong Hee (Gmail)" <email@hidden>)
 >Re: Inaccurate active session count in JavaMonitor (Solved) (From: Chuck Hill <email@hidden>)



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