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Track when GUI processes are detached

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Kovid Goyal 2014-11-15 09:14:28 +05:30
parent 7e0be5825e
commit 8291e02f12
1 changed files with 5 additions and 4 deletions
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9
src/calibre/gui_launch.py
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@ -14,7 +14,10 @@ import os, sys
# launch all the GUI apps, forking before Qt is loaded and not during a # launch all the GUI apps, forking before Qt is loaded and not during a
# python import. # python import.
is_detached = False
def do_detach(fork=True, setsid=True, redirect=True): def do_detach(fork=True, setsid=True, redirect=True):
global is_detached
if fork: if fork:
# Detach from the controlling process. # Detach from the controlling process.
if os.fork() != 0: if os.fork() != 0:
@ -23,10 +26,8 @@ def do_detach(fork=True, setsid=True, redirect=True):
os.setsid() os.setsid()
if redirect: if redirect:
from calibre.constants import plugins from calibre.constants import plugins
try: plugins['speedup'][0].detach(os.devnull)
plugins['speedup'][0].detach(os.devnull) is_detached = True
except AttributeError:
pass # people running from source without updated binaries
def detach_gui(): def detach_gui():
from calibre.constants import islinux, isbsd, DEBUG from calibre.constants import islinux, isbsd, DEBUG