2da62a16c3
For now, pep8 check is only run for some files known to be clean, we should clean the rest and enable pep8 check for all files then.
85 lines
1.8 KiB
Python
85 lines
1.8 KiB
Python
"""
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Support for using stackless python. Broken and riddled with print statements
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at the moment. Please fix it!
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"""
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import sys
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import types
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import stackless
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caller = None
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coro_args = {}
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tasklet_to_greenlet = {}
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def getcurrent():
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return tasklet_to_greenlet[stackless.getcurrent()]
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class FirstSwitch(object):
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def __init__(self, gr):
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self.gr = gr
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def __call__(self, *args, **kw):
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#print("first call", args, kw)
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gr = self.gr
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del gr.switch
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run, gr.run = gr.run, None
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t = stackless.tasklet(run)
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gr.t = t
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tasklet_to_greenlet[t] = gr
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t.setup(*args, **kw)
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t.run()
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class greenlet(object):
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def __init__(self, run=None, parent=None):
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self.dead = False
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if parent is None:
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parent = getcurrent()
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self.parent = parent
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if run is not None:
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self.run = run
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self.switch = FirstSwitch(self)
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def switch(self, *args):
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#print("switch", args)
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global caller
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caller = stackless.getcurrent()
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coro_args[self] = args
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self.t.insert()
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stackless.schedule()
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if caller is not self.t:
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caller.remove()
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rval = coro_args[self]
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return rval
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def run(self):
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pass
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def __bool__(self):
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return self.run is None and not self.dead
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class GreenletExit(Exception):
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pass
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def emulate():
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module = types.ModuleType('greenlet')
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sys.modules['greenlet'] = module
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module.greenlet = greenlet
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module.getcurrent = getcurrent
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module.GreenletExit = GreenletExit
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caller = stackless.getcurrent()
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tasklet_to_greenlet[caller] = None
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main_coro = greenlet()
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tasklet_to_greenlet[caller] = main_coro
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main_coro.t = caller
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del main_coro.switch # It's already running
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coro_args[main_coro] = None
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