Subj : Re: Deadlock Calculator
To   : comp.programming.threads
From : David Schwartz
Date : Fri May 13 2005 07:36 pm


"Uenal Mutlu" <520001085531-0001@t-online.de> wrote in message 
news:d628t5$b7j$04$1@news.t-online.com...

> Here's an example showing the difference when recursive locking is used:

> DATA:
> ObjectList: a b
> fRecursiveLocks: 0
> Objects in T0: b a
> Objects in T1: b a a b
> ANALYSIS:
> SelfDeadlock: object 'a' in T1(ix=2) vs. T1(ix=1)
> Result: Deadlock!

    Whew. Good thing we saw the deadlock and caught the bug.

> DATA:
> ObjectList: a b
> fRecursiveLocks: 1
> Objects in T0: b a
> Objects in T1: b a a b
> ANALYSIS:
> Result: No deadlock

    Oops, now the bug slips into release and can bite customers.

    DS

.