Topics hang until I attach a debugger

Question

I have a service using WCF. Inside it has a dictionary with lists that you can add or get a subset of from different endpoints.

The code looks something like this:

        List<Data> list = null;
        try
        {
            locker.EnterReadLock();
            list = internalData[Something].Where(x => x.hassomething()).ToList();
        }
        finally
        {
            locker.ExitReadLock();
        }

        foreach (var y in list)
        {
            result[y.proprty1].Add(y.property2); // <-- here it hangs
        }

        return result;

Thus, internalData is blocked by ReaderWriterLockSlim for all operations, the reader to read and write to add. I make a copy of the elements inside the castle and work on this copy later.

The problem arises after a while, more and more processor cores go 100% and, finally, use all the cores. It can work perfectly for several days and millions of calls until it stops.

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Answer 1

(-) {code...}, . lilke, , . http://joeduffyblog.com/2007/02/07/introducing-the-new-readerwriterlockslim-in-orcas/