Things you need to know before programming Perl ithreads by liz (Monsignor) Recently I've received a lot more ithreads related questions, so I figured some background information might be in order. Some of these issues were already addressed about a year ago in Status and usefulness of ithreads in 5.8.0, but I think a recap is in order. This is not a tutorial about the how to use threads. It's mor