On Jun 29, 6:36 pm, [EMAIL PROTECTED] wrote: > I'm writing a program which has to execute a command, get its output > and show it on a treeview. > This command runs for a very long time. > I want to end the execution of the command when the user closes my > application. > > Right now I'm using an object my_child of type subprocess.Popen to > execute the command, inside a thread with an infinite loop where we > constantly ask for its output. > > To end the program when the user closes the application, I send a > SIGTERM to the process with pid my_child.pid using os.kill. But I also > have to send a SIGTERM to my_child.pid + 1 because my_child.pid is the > pid of /bin/sh -c which is the one which calls the command, because > when I try to run Popen with shell=False, it sends an exception and > says the file or directory doesn't exist. > > Anyone knows of a better way to close the command than using a > SIGTERM? I just can't help myself thinking this is an ugly dirty hack.
As nick pointed out use process group's . I use the "preexec_fn" keyword argument to Popen and "os.setsid()" call's side effect to make process groups and then os.killpg() to send the signal to process groups. child = Popen( cmd , preexec_fn = os.setsid ) os.killpg( child.pid,signal.SIGINT) Regards jitu -- http://mail.python.org/mailman/listinfo/python-list
