Swapnil Nagle (swapsn@xxxxxxxxxxxxxx) wrote: > >I have a process "A" spawning thread "B". (using pthreads) > > > >ps -aefm | grep "A" gives me two pids, one of "A" and one of "B" > > > >When I send a signal to pid-B, it is actually delivered to "A". (I know > >this because I have my hook in sys_kill) > > > > How do you know this in sys_kill() ? > > >Is this always the case ? Can I not send a signal directly to a thread > >(not the main thread) ? > > > > On rh9 kernel (2.4.20-6), sending SIGKILL signal to one of the threads > kills both threads. On stock 2.4.27, only the thread to which the signal > is sent is killed. > > I don't know why is this behaviour different. > If you want to use signals, process and fork() is much better. http://www.serpentine.com/~bos/threads-faq/#10-DCE-POSIX-UI-Why-does-my-threaded-program-not-handle-signals-sensibly- Hope this can help, ~Christophe -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
