class GreenletTimer(ContextualTimer):
"""A timer to get CPU time per greenlet."""
greenlet = lazy_import('greenlet')
def detect_context(self):
if self.greenlet:
return id(self.greenlet.getcurrent())
def _trace(self, event, args):
origin, target = args
self.pause(id(origin))
self.resume(id(target))
def run(self, profiler):
self.greenlet.settrace(self._trace)
yield
self.greenlet.settrace(None)
class MathHolder(object):
math = lazy_import('math')
class O(object):
math = lazy_import('math')