Hello Vyacheslav, Monday, October 23, 2006, 7:20:47 AM, you wrote:
Bulat: I didn't get the chance to use the streams library yet, but could you explain how it would solve my locking problem? The core problem that the runtime under Win32 doesn't have an IO manager still remains, correct?
i will say instead "ghc I/O library on windows doesn't include IO manager". there are 3 possible ways to implement I/O: 1) use read() calls marked as unsafe. it will block all haskell threads while one thread do I/O 2) use calls marked as safe. your I/O becomes fine 3) implement I/O manager which will make special asyncRead() calls and then wake up just the Haskell thread that completed its i/o. in terms of functionality, it's the same as 2), but a MUCH faster when you have a lot of I/O (imagine web server with thousands of threads running simultaneously) GHC i/o lib implements 3) on unixes but only 1) on windows. my Streams lib implement 1) on any system. BUT... all that you need to switch my lib to 2) is to edit System.FD module and mark imports as 'safe'. with GHC I/O lib it will be a hard task, believe me :)
Is anyone looking to fix this issue? If not, how hard would it be for me to fix it? I'd like to get my hands dirty with GHC but I don't think I'll be able to do it without a lot of direction.
wait a moment. GHC headquarter don't work at weekends ;) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com