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[Pan-devel] Ya know Pan2 is really single threaded, right?

From: Calin A. Culianu
Subject: [Pan-devel] Ya know Pan2 is really single threaded, right?
Date: Sat, 17 Mar 2007 15:18:13 -0400 (EDT)

Why does pan2 ever create a threadpool?  It's actually single-threaded!

I discovered this because UUDecoding attachements led to pan2 stalling completely (the UI was frozen too -- the whole app was stuck inside UUDecodeFile()). This is because pan2 does all its task processing from the main thread's idle loop!

The other 4 threads that are created are only briefly used to create a socket connection to the nntp server, then the actual handshaking and logging-in is handled from the main thread's idle loop!

Furthermore, any and all nntp stuff happens in the main thread. Sure, there are 4 task contexts that keep getting shuffled around, but basically only 1 task at a time ever runs, and it runs in the main thread.

Meanwhile, you have this perfectly lovely thread pool sitting there twiddling its thumbs.

Is this intentional?

I think I know how to fix this.

Are you guys open to accepting patches?

My gripe with this for the most part is that UUDecode() of large binaries (sometimes a single attachment can be 50mb) stalls the whole app and leads to poor network utilization overall.


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