SOme of the stuff around here about TLS? http://msdn.microsoft.com/en-us/library/6sby1byh.aspx
On Fri, Feb 15, 2013 at 7:25 PM, Greg Keogh <[email protected]> wrote: > Folks, I can't remember if I've asked about this before. I think I year > ago when I hit this I gave up and worked around it ... but now I want it > solved! > > I have a Parallel.ForEach loop over EnumerateFiles which is blazing fast, > but then I added to code to make an MD5 hash of the files and it dies > because of "Hash not valid for use in specified state". I have a single > static MD5 hasher which lives for the life of the app, but calling it from > many threads is not allowed. > > I have a suspicion there is an overload of Parallel.ForEach that allows > each thread to start/use/finish its own resources. In theory I need each > thread needs to make its own MD5 and dispose at the end. There are so many > overloads in the Threading Tasks namespace that I'm confused at first and > I'll have to plod through Jeffrey Richter's book overnight to find a > possible example. > > Are there any Task ninjas out there who know how to do this sort of thing? > > Greg K > > P.S. I just went to pat the cat and on the way back I picked up Richter's > CLR via C# and I found a skeleton example on page 742 where he adds up the > sizes of all files in a folder. However, the example is very terse and I'll > need to stare at it for a while to grok it. I will need to check that this > example behaves consistently under all conditions such as cancellation, > unhandled crash, etc. If I find anything useful I'll let you know. > -- Meski http://courteous.ly/aAOZcv "Going to Starbucks for coffee is like going to prison for sex. Sure, you'll get it, but it's going to be rough" - Adam Hills
