What are we going to do tomorrow night, Brain? - All Comments

(OffTopic) ‘ThreadSafe’ Classes

The Activity Designer — Wed, 03 Aug 2011 00:54:02 GMT

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re: Thread Safe Dictionary Update

Brian Rudolph — Thu, 29 Jul 2010 21:32:44 GMT

this error is technically being spawned from outside of the dictionary. It says that the thread was being aborted, so I'd imagine that somewhere in your code an ThreadAbort is being done, which put the whole thing in a bit of an iffy state. My guess is that you are perhaps doing some work in a Dispose method that touches the dictionary. I have been using this dictionary for years and have never seen one of these. Do you have a code snippet of how it's being used?

re: Thread Safe Dictionary Update

frJericho — Mon, 26 Jul 2010 20:33:22 GMT

I should have added that the one thing that changed is that my application was previously running in a VM with only 1 CPU core and has recently been upgraded to a VM with 2 CPU cores.

Is it possible that this problem is due to two threads running are attempting to get a lock on the same resource?

re: Thread Safe Dictionary Update

frJericho — Mon, 26 Jul 2010 19:40:11 GMT

I have been using the Thread Safe dictionary successfully for more than a year but recently I have started seeing more and more of these errors:

System.Threading.ThreadAbortException: Thread was being aborted.

at System.Threading.WaitHandle.WaitOneNative(SafeWaitHandle waitHandle, UInt32 millisecondsTimeout, Boolean hasThreadAffinity, Boolean exitContext)

at System.Threading.WaitHandle.WaitOne(Int64 timeout, Boolean exitContext)

at System.Threading.ReaderWriterLockSlim.WaitOnEvent(EventWaitHandle waitEvent, UInt32& numWaiters, Int32 millisecondsTimeout)

at System.Threading.ReaderWriterLockSlim.TryEnterUpgradeableReadLock(Int32 millisecondsTimeout)

I'm wondering what might be causing this problem???

re: Thread Safe Dictionary Update

Brian Rudolph — Thu, 17 Jun 2010 17:13:15 GMT

Good Question... Either would work technically, i was attempting to provide a simple place for anyone to extend the class to allow for timeouts. Never finished the implementation, but it would be simple to do so.

re: Thread Safe Dictionary Update

lau_ — Tue, 15 Jun 2010 08:28:27 GMT

Could you explain why you use:

while (!lockAcquired)

lockAcquired = locks.TryEnterWriteLock(1);

instead of a simple:

locks.EnterWriteLock();

Thread Safe Dictionary in .NET with ReaderWriterLockSlim

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WPF for the Web guy

mostlylucid — Wed, 20 Jan 2010 21:01:59 GMT

WPF for the Web guy

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re: Thread Safe Dictionary Update

dj_axl — Wed, 21 Oct 2009 22:05:49 GMT

And to add to PeterZacho's post...

public ThreadSafeDictionary(IDictionary<TKey, TValue> dic)

{

using (new WriteLock(this.dictionaryLock))

{

this.dict = new Dictionary<TKey, TValue>(dic);

}

re: Thread Safe Dictionary Update

dj_axl — Wed, 21 Oct 2009 20:21:48 GMT

For my use needed to add a cast...

public static implicit operator Dictionary<TKey, TValue>(ThreadSafeDictionary<TKey, TValue> tsd)

{

using (new ReadOnlyLock(tsd.dictionaryLock))

{

return (Dictionary<TKey, TValue>)tsd.dict;

}