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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

Learn WO at WOWODC'09 East in Montréal this August!
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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>)



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