On Fri, Oct 08, 2004 at 09:27:57PM +0530, Vinu V wrote: > > Hi, > > I am having some problem in using linux signals with Pth threads. > > This is what I have done > > 1. From the main (), I have done a pth_init (). > 2. Spawned two threads from the main(). These two threads just runs in a > while loop with a small delay inside the while loop. > 3. Registered a signal handler for SIGUSR1 signal from main(). I am using > sigaction() system call for registering the signal handler. > 4. main() does a pth_join() on the child thread ids. > > Now from the signal handler for SIGUSR1 I am trying to acquire a mutex > using the pth_mutex_acquire() call. > Whenever the signal handler is executed, the program crashes at the > pth_mutex_acquire() call. > > Does anyone have any idea about why it is crashing while trying to acquire > a mutex from a signal handler ?
What you can safely call in a signal handler is extremely limited. Mutex acquisition is definitely not on the list of safe APIs. Jason ______________________________________________________________________ GNU Portable Threads (Pth) http://www.gnu.org/software/pth/ Development Site http://www.ossp.org/pkg/lib/pth/ Distribution Files ftp://ftp.gnu.org/gnu/pth/ Distribution Snapshots ftp://ftp.ossp.org/pkg/lib/pth/ User Support Mailing List [EMAIL PROTECTED] Automated List Manager (Majordomo) [EMAIL PROTECTED]
