Package buildbot :: Package status :: Module persistent_queue :: Class MemoryQueue

Class MemoryQueue

object --+
         |
        MemoryQueue

Simple length bounded queue using deque.

list.pop(0) operation is O(n) so for a 10000 items list, it can start to be real slow. On the contrary, deque.popleft() is O(1) most of the time. See http://docs.python.org/library/collections.html for more information.

Instance Methods

__init__(self, maxItems=None)
x.__init__(...) initializes x; see help(type(x)) for signature

source code

pushItem(self, item)

source code

insertBackChunk(self, chunk)

source code

popChunk(self, nbItems=None)

source code

save(self)

source code

items(self)

source code

nbItems(self)

source code

maxItems(self)

source code

__providedBy__(...)
Object Specification Descriptor

source code

__provides__(...)
Special descriptor for class __provides__

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables
	__implemented__ = `<implementedBy buildbot.status.persistent_qu...`

Properties
Inherited from `object`: `__class__`

Method Details

init(self, maxItems=None)
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Overrides: object.__init__: (inherited documentation)

provides(...)

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that
we can get declarations for objects without instance-specific
interfaces a bit quicker.

For example:

  >>> from zope.interface import Interface
  >>> class IFooFactory(Interface):
  ...     pass
  >>> class IFoo(Interface):
  ...     pass
  >>> class C(object):
  ...     implements(IFoo)
  ...     classProvides(IFooFactory)
  >>> [i.getName() for i in C.__provides__]
  ['IFooFactory']

  >>> [i.getName() for i in C().__provides__]
  ['IFoo']

Class Variable Details

implemented

Value:

<implementedBy buildbot.status.persistent_queue.MemoryQueue>

Class MemoryQueue

__init__(self, maxItems=None) (Constructor)

__provides__(...)

__implemented__

init(self, maxItems=None)
(Constructor)

provides(...)

implemented