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QML: graceful shutdown process

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Bumsik Kim 2018-05-07 16:53:43 -04:00
parent 0975e4e8ac
commit b8d9a7dc07
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GPG key ID: E31041C8EC5B01C6
1 changed files with 15 additions and 5 deletions
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virtscreen.py
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@ -1,6 +1,6 @@
#!/usr/bin/env python
import sys, os, subprocess, signal, re, atexit
import sys, os, subprocess, signal, re, atexit, time
from enum import Enum
from PyQt5.QtWidgets import QApplication
@ -141,6 +141,7 @@ class XRandR(SubprocessWrapper):
return
self.call(f"xrandr --output {self.virt.name} --off")
self.call(f"xrandr --delmode {self.virt.name} {self.mode_name}")
atexit.unregister(self.delete_virtual_screen)
#-------------------------------------------------------------------------------
# Twisted class
@ -174,13 +175,13 @@ class ProcessProtocol(protocol.ProcessProtocol):
self.transport.closeStdin() # No more input
def outReceived(self, data):
print("outReceived! with %d bytes!" % len(data))
# print("outReceived! with %d bytes!" % len(data))
self.onOutReceived(data)
if self.logfile is not None:
self.logfile.write(data)
def errReceived(self, data):
print("outReceived! with %d bytes!" % len(data))
# print("errReceived! with %d bytes!" % len(data))
self.onErrRecevied(data)
if self.logfile is not None:
self.logfile.write(data)
@ -347,6 +348,9 @@ class Backend(QObject):
@pyqtSlot()
def deleteVirtScreen(self):
print("Deleting the Virtual Screen...")
if self.vncState != VNCState.OFF.value:
print("Turn off the VNC server first")
return
self.xrandr.delete_virtual_screen()
self.virtScreenCreated = False
@ -368,6 +372,7 @@ class Backend(QObject):
def _onEnded(exitCode):
print("VNC Exited.")
self.vncState = VNCState.OFF
atexit.unregister(self.stopVNC)
# Set password
password = False
if self.vncPassword:
@ -387,10 +392,15 @@ class Backend(QObject):
if password:
arg += f" -rfbauth {X11VNC_PASSWORD_PATH}"
self.vncServer.run(arg)
# auto stop on exit
atexit.register(self.stopVNC, force=True)
@pyqtSlot()
def stopVNC(self):
print(self.vncState)
def stopVNC(self, force=False):
if force:
# Usually called from atexit().
self.vncServer.kill()
time.sleep(2) # Make sure X11VNC shutdown before execute next atexit.
if self.vncState in (VNCState.WAITING.value, VNCState.CONNECTED.value):
self.vncServer.kill()
else: