本文整理匯總了Python中dbus.SessionBus._bus_names[name]方法的典型用法代碼示例。如果您正苦於以下問題：Python SessionBus._bus_names[name]方法的具體用法？Python SessionBus._bus_names[name]怎麽用？Python SessionBus._bus_names[name]使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類dbus.SessionBus的用法示例。
在下文中一共展示了SessionBus._bus_names[name]方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: __new__
# 需要導入模塊: from dbus import SessionBus [as 別名]
# 或者: from dbus.SessionBus import _bus_names[name] [as 別名]
def __new__(cls, name, bus=None, allow_replacement=False , replace_existing=False, do_not_queue=False):
"""Constructor, which may either return an existing cached object
or a new object.
:Parameters:
`name` : str
The well-known name to be advertised
`bus` : dbus.Bus
A Bus on which this service will be advertised.
Omitting this parameter or setting it to None has been
deprecated since version 0.82.1. For backwards compatibility,
if this is done, the global shared connection to the session
bus will be used.
`allow_replacement` : bool
If True, other processes trying to claim the same well-known
name will take precedence over this one.
`replace_existing` : bool
If True, this process can take over the well-known name
from other processes already holding it.
`do_not_queue` : bool
If True, this service will not be placed in the queue of
services waiting for the requested name if another service
already holds it.
"""
validate_bus_name(name, allow_well_known=True, allow_unique=False)
# if necessary, get default bus (deprecated)
if bus is None:
import warnings
warnings.warn('Omitting the "bus" parameter to '
'dbus.service.BusName.__init__ is deprecated',
DeprecationWarning, stacklevel=2)
bus = SessionBus()
# see if this name is already defined, return it if so
# FIXME: accessing internals of Bus
if name in bus._bus_names:
return bus._bus_names[name]
# otherwise register the name
name_flags = (
(allow_replacement and _dbus_bindings.NAME_FLAG_ALLOW_REPLACEMENT or 0) |
(replace_existing and _dbus_bindings.NAME_FLAG_REPLACE_EXISTING or 0) |
(do_not_queue and _dbus_bindings.NAME_FLAG_DO_NOT_QUEUE or 0))
retval = bus.request_name(name, name_flags)
# TODO: more intelligent tracking of bus name states?
if retval == _dbus_bindings.REQUEST_NAME_REPLY_PRIMARY_OWNER:
pass
elif retval == _dbus_bindings.REQUEST_NAME_REPLY_IN_QUEUE:
# queueing can happen by default, maybe we should
# track this better or let the user know if they're
# queued or not?
pass
elif retval == _dbus_bindings.REQUEST_NAME_REPLY_EXISTS:
raise NameExistsException(name)
elif retval == _dbus_bindings.REQUEST_NAME_REPLY_ALREADY_OWNER:
# if this is a shared bus which is being used by someone
# else in this process, this can happen legitimately
pass
else:
raise RuntimeError('requesting bus name %s returned unexpected value %s' % (name, retval))
# and create the object
bus_name = object.__new__(cls)
bus_name._bus = bus
bus_name._name = name
# cache instance (weak ref only)
# FIXME: accessing Bus internals again
bus._bus_names[name] = bus_name
return bus_name