how to be notified that items of the array are updated?

Question

Assume I have some array. All items are initially null Thread1 writes to array. Thread2 blocks until all items in array are set (and then process).

I was doing it like that: I've created one another array with AutoResetEvent. In Thread1 every time i update array item i call Set to corresponding AutoResetEvent and in Thread2 I just WaitHandle.WaitAll(events);

But now I do think this is not efficient. I think that I should probably use one event. Because I can count how many items are updated yet, i can just raise event on last update.

This is simplified exmple, in real life things are a little bit harder, but probably you can suggest something better?

Also should I use Volatile.Read in Thread1? (I have double-CPU machine).

score 0 · Answer 1 · edited May 23 '17 at 11:43

0

What not take a look at a BlockingCollection so you can add your items in a thread safe manner?

You could look at using a thread safe ObserveableCollection to get your notifications too.

edited May 23 '17 at 11:43

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answered Nov 21 '12 at 12:12

Jon

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how will help it to replace "WaitAll"? – Oleg Vazhnev Nov 21 '12 at 12:14
also I would prefer "simplest" solution. because i do care about latency and because i will port that to c++ in future. – Oleg Vazhnev Nov 21 '12 at 12:15
you could use the Task approach http://msdn.microsoft.com/en-us/library/dd235635.aspx – Jon Nov 21 '12 at 12:15

how to be notified that items of the array are updated?

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