InterruptManager: give tracil pid at creation

tracim/tracim/config/app_cfg.py

 """
 import imp
 import importlib
+import os
 from urllib.parse import urlparse
 
 import tg
         manager.run('mail_sender', MailSenderDaemon)
 
 environment_loaded.register(lambda: start_daemons(daemons))
-interrupt_manager = InterruptManager(daemons_manager=daemons)
+interrupt_manager = InterruptManager(os.getpid(), daemons_manager=daemons)
 
 # Note: here are fake translatable strings that allow to translate messages for reset password email content
 duplicated_email_subject = l_('Password reset request')

tracim/tracim/lib/system.py

 
 
 class InterruptManager(object):
-    def __init__(self, daemons_manager: DaemonsManager):
+    def __init__(
+            self,
+            tracim_process_pid: int,
+            daemons_manager: DaemonsManager,
+    ) -> None:
+        """
+        :param tracim_process_pid: pid of tracim.
+        :param daemons_manager: Tracim daemons manager
+        """
         self.daemons_manager = daemons_manager
-        self.process_pid = os.getpid()
+        self.tracim_process_pid = tracim_process_pid
         self._install_sgnal_handlers()
 
     def _install_sgnal_handlers(self) -> None:
         self.daemons_manager.stop_all()
         # Web server is managed by end of stack like uwsgi, apache2.
         # So to ask it's termination, we have to use standard kills signals
-        os.kill(self.process_pid, signum)
+        os.kill(self.tracim_process_pid, signum)