From Greatwolf at myrealbox.com Wed Apr 7 09:30:02 2004 From: Greatwolf at myrealbox.com (Vivi Orunitia) Date: Wed, 7 Apr 2004 09:30:02 +0000 (UTC) Subject: Hanging thread in CMG when used w/ borland compiled pthread Message-ID: Hi all, I'm having trouble figuring this out but perhaps someone here might have an idea about what the problem is. I'm not too familiar with pthreads and I haven't any multithreading application before. I've been trying to compile the CMG library here using borland's free compiler: http://www-2.cs.cmu.edu/~cm-gfxpkg/ One of the components it needs is pthread. I don't see a makefile that works with borland's compiler so I created my own make for compiling the pthread source. Everything compiles ok and a pthread.dll and pthread.lib was produced. I then proceed to use those two files in compiling CMG and that works as well. Now the part I'm having trouble with. I compile a simple test program using CMG and then attempted to run it. It runs fine but the problem comes when I try to exit the test program. When I press escape to exit, the test program window is just stuck there. Anything I do afterwards it doesn't respond. For me to make it quit, I would need to go to it's console window and press ctrl-c or ctrl-break. This only happens when I use the pthread.dll and .lib I built myself but it doesn't happen if I use one of the precompiled VC pthread.dll and create a pthread.lib from that. As I've said, I have no experience with thread programming but from the looks of it, it seems one of the threads are hanging. I did a search of this problem in the pthread mailing-list looking for anything there that might describe what looks like my problem. I found something that said optimization could have side-effects in thread cancelling or something like that. So I rebuilt the pthread source again but this time completely disabling any opts or function inlining. I tried the whole thing again but the problem still persist. Well, I've described my problem as much as I can in a nutshell but if you guys need any more info, just ask. Anyone have any idea what could be causing this hanging window problem when quitting the application using pthreads please post your replies here? That would be greatly appreciated! Thanks