62     for child in psutil.Process(proc.pid).children(recursive=True):
64             os.kill(child.pid, signal.SIGTERM)
203                 pid = int(pid_file.read())
207                 os.kill(pid, signal.SIGKILL)
404             self.pid_fn = os.path.join(instance.build_dir, "renode.pid")
877         self.pid_fn = os.path.join(instance.build_dir, "qemu.pid")
891     def _get_cpu_time(pid):  argument
898         proc = psutil.Process(pid)
950             pid = 0
953                     pid = int(pid_file.read())
962                         if pid and this_timeout > 0:
966                             cpu_time = QEMUHandler._get_cpu_time(pid)
982                 if pid == 0 and os.path.exists(pid_fn):
984                         pid = int(pid_file.read())
1008                 logger.debug(f"QEMU ({pid}): {line}")
1034                 f"QEMU ({pid}) complete with {_status} ({_reason}) after {handler_time} seconds"
1039         if pid:
1042                 if pid:
1043                     os.kill(pid, signal.SIGTERM)
1052         # PID file will be created in the main sysbuild app's build dir
1053         self.pid_fn = os.path.join(sysbuild_build_dir, "qemu.pid")
1177         self.pid_fn = os.path.join(instance.build_dir, "qemu.pid")
1180         self.pid = 0
1192     def _get_cpu_time(pid):  argument
1199         proc = psutil.Process(pid)
1212     def _stop_qemu_process(pid):  argument
1213         if pid:
1215                 if pid:
1216                     os.kill(pid, signal.SIGTERM)
1233         # PID file will be created in the main sysbuild app's build dir
1234         self.pid_fn = os.path.join(sysbuild_build_dir, "qemu.pid")
1290         self.pid = 0
1298                     if self.pid and this_timeout > 0:
1302                         cpu_time = self._get_cpu_time(self.pid)
1318             if self.pid == 0 and os.path.exists(pid_fn):
1319                 # pid file probably not contains pid yet, continue
1324                     self.pid = int(pid_file.read())
1352             logger.debug(f"QEMU ({self.pid}): {line}")
1380             f"QEMU ({self.pid}) complete with {_status} ({_reason}) after {handler_time} seconds"
1384         self._stop_qemu_process(self.pid)
1426         logger.debug(f"return code from QEMU ({self.pid}): {self.returncode}")