ble_communication.py 文件源码

def stop(hcitool, hcidump):
        # import psutil here so as long as all implementations are in the same file, all will work
        import psutil

        log.info('Stop receiving broadcasts')

        def kill_child_processes(parent_pid):
            try:
                parent = psutil.Process(parent_pid)
            except psutil.NoSuchProcess:
                return

            for process in parent.children(recursive=True):
                subprocess.call(['sudo', '-n', 'kill', '-s', 'SIGINT', str(process.pid)])

        kill_child_processes(hcitool.pid)
        subprocess.call(['sudo', '-n', 'kill', '-s', 'SIGINT', str(hcitool.pid)])
        kill_child_processes(hcidump.pid)
        subprocess.call(['sudo', '-n', 'kill', '-s', 'SIGINT', str(hcidump.pid)])