erp5testnode: a process might be already dead right before we try to kill it

Since a process might exit by himself at any time, handle exceptions when
we try kill processes

erp5/util/testnode/ProcessManager.py

@@ -106,16 +106,24 @@ def killCommand(pid, log):
   child (until childs does not change) and then we brutally kill
   everyone at the same time
   """
+  try:
     process = psutil.Process(pid)
     new_child_set = set([x.pid for x in process.children(recursive=True)])
     child_set = None
+    try:
       os.kill(pid, signal.SIGSTOP)
+    except OSError:
+      pass
     while new_child_set != child_set:
       child_set = new_child_set
       log("killCommand, new_child_set : %r, child_set: %r" % (
           new_child_set, child_set))
       for child_pid in child_set:
+        try:
           os.kill(child_pid, signal.SIGSTOP)
+        except OSError:
+          log("killCommand, OSError, %r is already dead" % child_pid)
+          pass
       time.sleep(1)
       child_set = new_child_set
       new_child_set = set([x.pid for x in process.children(recursive=True)])
@@ -123,6 +131,9 @@ def killCommand(pid, log):
     for child_pid in child_set:
       os.kill(child_pid, signal.SIGKILL)
     os.kill(pid, signal.SIGKILL)
+  except psutil.NoSuchProcess:
+    log("killCommand, NoSuchProcess raised")
+    pass
 
 class ProcessManager(object):
 
@@ -196,9 +207,12 @@ class ProcessManager(object):
     user_login = getpass.getuser()
     to_kill_list = []
     for process in psutil.process_iter():
+      try:
         if process.username() == user_login and process.name() == name:
           self.log('ProcesssManager, killall on %s having pid %s' % (name, process.pid))
           to_kill_list.append(process.pid)
+      except psutil.NoSuchProcess:
+        pass
     for pid in to_kill_list:
       killCommand(pid, self.log)