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Viewing changes to gevent/local.py

  • Committer: Bazaar Package Importer
  • Author(s): Örjan Persson
  • Date: 2011-05-17 16:43:20 UTC
  • mfrom: (6.1.1 sid)
  • Revision ID: james.westby@ubuntu.com-20110517164320-nwhld2xo6sz58p4m
Tags: 0.13.6-1
http://bugs.debian.org/601863
New upstream version (Closes: #601863).

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Lines of Context:
gevent/local.py
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  ...     log.append(items)
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  ...     mydata.number = 11
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  ...     log.append(mydata.number)
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  >>> greenlet = gevent.spawn(f)
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  >>> greenlet.join()
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  >>> log
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>>> del mydata
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"""
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from weakref import WeakKeyDictionary
 
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from copy import copy
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from gevent.hub import getcurrent
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from gevent.coros import RLock
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__all__ = ["local"]
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class _localbase(object):
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    __slots__ = '_local__args', '_local__lock', '_local__dicts'
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    def __getattribute__(self, name):
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        d = object.__getattribute__(self, '_local__dicts').get(getcurrent())
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        if d is None:
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            # we can obtain the lock here and not earlier, because the above has no switches out
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            # however, subclassed __init__ may switch so we do need obtain the lock here
 
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            # it's OK to acquire the lock here and not earlier, because the above code won't switch out
 
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            # however, subclassed __init__ might switch, so we do need to acquire the lock here
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            lock = object.__getattribute__(self, '_local__lock')
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            lock.acquire()
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            try:
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            return object.__getattribute__(self, name)
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    def __setattr__(self, name, value):
 
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        if name == '__dict__':
 
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            raise AttributeError("%r object attribute '__dict__' is read-only" % self.__class__.__name__)
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        d = object.__getattribute__(self, '_local__dicts').get(getcurrent())
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        if d is None:
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            lock = object.__getattribute__(self, '_local__lock')
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            return object.__setattr__(self, name, value)
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    def __delattr__(self, name):
 
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        if name == '__dict__':
 
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            raise AttributeError("%r object attribute '__dict__' is read-only" % self.__class__.__name__)
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        d = object.__getattribute__(self, '_local__dicts').get(getcurrent())
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        if d is None:
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            lock = object.__getattribute__(self, '_local__lock')
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        else:
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            object.__setattr__(self, '__dict__', d)
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            return object.__delattr__(self, name)
 
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    def __copy__(self):
 
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        currentId = getcurrent()
 
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        d = object.__getattribute__(self, '_local__dicts').get(currentId)
 
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        duplicate = copy(d)
 
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        cls = type(self)
 
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        if cls.__init__ is not object.__init__:
 
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            args, kw = object.__getattribute__(self, '_local__args')
 
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            instance = cls(*args, **kw)
 
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        else:
 
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            instance = cls()
 
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        object.__setattr__(instance, '_local__dicts', {
 
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            currentId: duplicate
 
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        })
 
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        return instance