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Month: July 2011

Even better, even simpler multithreading with JRuby

[Yes, another post about ruby code; I’ll get back to library stuff soon.] Quite a while ago, I released a little gem called threach (for “threaded #each”). It allows you to easily process a block with multiple threads. # Process a CSV file with three threads‘data.csv’).threach(3, :each_line) {|line| send_to_db(line)} Nice, right? The problem is that I could never figure out a way to deal with a break or an Exception raised inside the block. The core problem is that once a thread trying to push/pop from a ruby SizedQueue is blocking, there’s no way (I could find) to tell…

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