Stefan Berger/Watson/IBM wrote on 03/22/2012 05:33:41 PM: Actually, that's exactly what I was going to do -- a hash list of valid threads and exit if it isn't in the list; then still remove the req's and free them as the current code does, which means they won't interfere with each other, but the cancel code can be separated, in the same place, but synchronous with no signal; Thread management independent of req management. +_DLS