Re: Locking memory and multiple timers?

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FredC <FredC@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
I have an application that uses mulitple timers. Each of the timer event
handlers manipulate a common array of data.
I'm getting Null refererance errors - should I put a lock on the array when
I change a value?

Could you post a short but complete program which demonstrates the
problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

In general though, yes - you need to obtain a lock (on something, see
below) if you're going to access/change shared data.

As well, should I lock the array when I only want to read a value?

I wouldn't lock the array, but a separate locking object. See
http://www.pobox.com/~skeet/csharp/threads/lockchoice.shtml

--
Jon Skeet - <skeet@xxxxxxxxx>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too
.

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