def daemonize(reactor, os):
"""
Daemonizes the application on Unix. This is done by the usual double
forking approach.
@see: U{http://code.activestate.com/recipes/278731/}
@see: W. Richard Stevens, "Advanced Programming in the Unix Environment",
1992, Addison-Wesley, ISBN 0-201-56317-7
@param reactor: The reactor in use. If it provides L{IReactorDaemonize},
its daemonization-related callbacks will be invoked.
@param os: An object like the os module to use to perform the daemonization.
"""
## If the reactor requires hooks to be called for daemonization, call them.
## Currently the only reactor which provides/needs that is KQueueReactor.
if IReactorDaemonize.providedBy(reactor):
reactor.beforeDaemonize()
if os.fork(): # launch child and...
os._exit(0) # kill off parent
os.setsid()
if os.fork(): # launch child and...
os._exit(0) # kill off parent again.
null = os.open('/dev/null', os.O_RDWR)
for i in range(3):
try:
os.dup2(null, i)
except OSError, e:
if e.errno != errno.EBADF:
raise
def daemonize(reactor, os):
"""
Daemonizes the application on Unix. This is done by the usual double
forking approach.
@see: U{http://code.activestate.com/recipes/278731/}
@see: W. Richard Stevens, "Advanced Programming in the Unix Environment",
1992, Addison-Wesley, ISBN 0-201-56317-7
@param reactor: The reactor in use. If it provides L{IReactorDaemonize},
its daemonization-related callbacks will be invoked.
@param os: An object like the os module to use to perform the daemonization.
"""
## If the reactor requires hooks to be called for daemonization, call them.
## Currently the only reactor which provides/needs that is KQueueReactor.
if IReactorDaemonize.providedBy(reactor):
reactor.beforeDaemonize()
if os.fork(): # launch child and...
os._exit(0) # kill off parent
os.setsid()
if os.fork(): # launch child and...
os._exit(0) # kill off parent again.
null = os.open('/dev/null', os.O_RDWR)
for i in range(3):
try:
os.dup2(null, i)
except OSError, e:
if e.errno != errno.EBADF:
raise
def daemonize(self, reactor):
"""
Daemonizes the application on Unix. This is done by the usual double
forking approach.
@see: U{http://code.activestate.com/recipes/278731/}
@see: W. Richard Stevens,
"Advanced Programming in the Unix Environment",
1992, Addison-Wesley, ISBN 0-201-56317-7
@param reactor: The reactor in use. If it provides
L{IReactorDaemonize}, its daemonization-related callbacks will be
invoked.
@return: A writable pipe to be used to report errors.
@rtype: C{int}
"""
# If the reactor requires hooks to be called for daemonization, call
# them. Currently the only reactor which provides/needs that is
# KQueueReactor.
if IReactorDaemonize.providedBy(reactor):
reactor.beforeDaemonize()
r, w = os.pipe()
if os.fork(): # launch child and...
code = self._waitForStart(r)
os.close(r)
os._exit(code) # kill off parent
os.setsid()
if os.fork(): # launch child and...
os._exit(0) # kill off parent again.
null = os.open('/dev/null', os.O_RDWR)
for i in range(3):
try:
os.dup2(null, i)
except OSError as e:
if e.errno != errno.EBADF:
raise
os.close(null)
if IReactorDaemonize.providedBy(reactor):
reactor.afterDaemonize()
return w
def daemonize(self, reactor):
"""
Daemonizes the application on Unix. This is done by the usual double
forking approach.
@see: U{http://code.activestate.com/recipes/278731/}
@see: W. Richard Stevens,
"Advanced Programming in the Unix Environment",
1992, Addison-Wesley, ISBN 0-201-56317-7
@param reactor: The reactor in use. If it provides
L{IReactorDaemonize}, its daemonization-related callbacks will be
invoked.
@return: A writable pipe to be used to report errors.
@rtype: C{int}
"""
# If the reactor requires hooks to be called for daemonization, call
# them. Currently the only reactor which provides/needs that is
# KQueueReactor.
if IReactorDaemonize.providedBy(reactor):
reactor.beforeDaemonize()
r, w = os.pipe()
if os.fork(): # launch child and...
code = self._waitForStart(r)
os.close(r)
os._exit(code) # kill off parent
os.setsid()
if os.fork(): # launch child and...
os._exit(0) # kill off parent again.
null = os.open('/dev/null', os.O_RDWR)
for i in range(3):
try:
os.dup2(null, i)
except OSError as e:
if e.errno != errno.EBADF:
raise
os.close(null)
if IReactorDaemonize.providedBy(reactor):
reactor.afterDaemonize()
return w
if os.fork(): # launch child and...
os._exit(0) # kill off parent
os.setsid()
if os.fork(): # launch child and...
os._exit(0) # kill off parent again.
null = os.open('/dev/null', os.O_RDWR)
for i in range(3):
try:
os.dup2(null, i)
except OSError, e:
if e.errno != errno.EBADF:
raise
os.close(null)
if IReactorDaemonize.providedBy(reactor):
reactor.afterDaemonize()
def launchWithName(name):
if name and name != sys.argv[0]:
exe = os.path.realpath(sys.executable)
log.msg('Changing process name to ' + name)
os.execv(exe, [name, sys.argv[0], '--originalname'] + sys.argv[1:])
class UnixApplicationRunner(app.ApplicationRunner):
"""
An ApplicationRunner which does Unix-specific things, like fork,
if os.fork(): # launch child and...
os._exit(0) # kill off parent
os.setsid()
if os.fork(): # launch child and...
os._exit(0) # kill off parent again.
null = os.open('/dev/null', os.O_RDWR)
for i in range(3):
try:
os.dup2(null, i)
except OSError, e:
if e.errno != errno.EBADF:
raise
os.close(null)
if IReactorDaemonize.providedBy(reactor):
reactor.afterDaemonize()
def launchWithName(name):
if name and name != sys.argv[0]:
exe = os.path.realpath(sys.executable)
log.msg('Changing process name to ' + name)
os.execv(exe, [name, sys.argv[0], '--originalname'] + sys.argv[1:])
class UnixApplicationRunner(app.ApplicationRunner):
"""
An ApplicationRunner which does Unix-specific things, like fork,
shed privileges, and maintain a PID file.
"""