Hello, Ok well what happens is I try and set the v4l channel, then the application freezes (pd/gem). I manually kill the application and look at the trace and its sitting in pthread_join() just before the syscall. pthread_join is all I have to go on, how do I check what threads are running? How do I see what thread in what code is actually causing the freeze? I've asked on many lists so far and no one is suggesting how to get more information on what is actually happening (even the authors of the software). So if pthread_join is not the issue then please let me know how I can figure out what is the issue. Thanks! b. Daniel Jacobowitz wrote:
On Tue, Sep 20, 2005 at 01:23:12PM -0400, B. Bogart wrote:Hello all, I tried on debian-user without any luck, perhaps someone on here will have an idea how I can further debug this issue. Sorry for anyone who got tired of seeing this on debian-user. I'm running a stock sarge machine with the 32bit 2.6.8 kernel on a AMD64 3200+ machine. I'm using some unstable and demudi packages for media applications, in particular pure-data (PD). Problem I'm having is that PD crashes when I try and use v4l2. Actually there is no fault, but PD hangs. I traced it down to the use of pthread_join() which is where the code hangs. (I've been doing a backtrace after manually killing the application)Why do you think it's pthread_join's fault? pthread_join will wait for a thread to complete. Is the thread being joined still running?
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