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version 1.130, 2002/05/11 01:35:42

version 1.131, 2002/05/13 23:07:52

Line 213

is changed to (__int64), the tv_usec variable of timeval struct has

the correct value.

38. (Roger Kumpf - HP) 13 May 2002 - To eliminate the possibility of

collisions (and subsequent corruption) when different threads

concurrently update the ArrayRep reference count, I added a Mutex

to the ArrayRep structure. This Mutex gets locked in the inc()

and dec() methods that manage the reference count.

After adding the Mutex, the "mysterious" memory problems seemed to clear

up. This seems like a very good thing. However, note that the addition

of the Mutex adversely affects performance (nearly 2:1). I tried using

an AtomicInt for the reference count, but that seemed to yield even worse

performance on my system.

Anyone should feel free to optimize the performance of the locking in

the ArrayRep structure. Since I believe this locking is required for

proper operation, I've added the Mutex for all platforms. Note that I

had to comment out the assert statements in internal_dq.h to avoid a

circular header file dependency (Array.h->IPC.h->internal_dq.h->

Exception.h->String.h->Array.h).

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Version 1.08 working towards 1.1 - Started 27 March 2002

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