54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
import weakref
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from eventlet import greenthread
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__all__ = ['get_ident', 'local']
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def get_ident():
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""" Returns ``id()`` of current greenlet. Useful for debugging."""
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return id(greenthread.getcurrent())
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# the entire purpose of this class is to store off the constructor
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# arguments in a local variable without calling __init__ directly
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class _localbase(object):
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__slots__ = '_local__args', '_local__greens'
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def __new__(cls, *args, **kw):
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self = object.__new__(cls)
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object.__setattr__(self, '_local__args', (args, kw))
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object.__setattr__(self, '_local__greens', weakref.WeakKeyDictionary())
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if (args or kw) and (cls.__init__ is object.__init__):
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raise TypeError("Initialization arguments are not supported")
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return self
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def _patch(thrl):
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greens = object.__getattribute__(thrl, '_local__greens')
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# until we can store the localdict on greenlets themselves,
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# we store it in _local__greens on the local object
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cur = greenthread.getcurrent()
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if cur not in greens:
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# must be the first time we've seen this greenlet, call __init__
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greens[cur] = {}
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cls = type(thrl)
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if cls.__init__ is not object.__init__:
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args, kw = object.__getattribute__(thrl, '_local__args')
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thrl.__init__(*args, **kw)
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object.__setattr__(thrl, '__dict__', greens[cur])
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class local(_localbase):
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def __getattribute__(self, attr):
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_patch(self)
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return object.__getattribute__(self, attr)
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def __setattr__(self, attr, value):
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_patch(self)
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return object.__setattr__(self, attr, value)
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def __delattr__(self, attr):
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_patch(self)
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return object.__delattr__(self, attr)
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