Carl Franklin

.NET Wonk

SyncLock Demo

I had been fumbling with a good demo for thread synchronization for a while and finally came up with a good demo in VB.NET 2003 illustrating the value of thread synchronization. It calls a sub on three different threads simultaneously. The sub increments a counter in a for/next loop. There are two versions, a raw unsynchronized version and a version that calls SyncLock to synchronize access to the counter.

http://www.franklins.net/dotnet

Posted: Aug 22 2004, 01:02 AM by Carl Franklin | with 15 comment(s)
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Marshall Brooke said:

Carl,

There is also the Interlocked.Increment method which takes a reference to an Int32/64 variable and atomically adds 1 to it. I'm not sure about the performance implications over Synclock/lock, but it may perform better for just incrementing an int.

best

Marshall
# August 22, 2004 9:30 AM

Carl said:

Yes indeed. Good point. It's hard to come up with a good synclock demo that doesn't generate a lot of data
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