3 from eventlet.support import greenlets as greenlet, six
4 from eventlet.hubs import get_hub
6 """ If true, captures a stack trace for each timer when constructed. This is
7 useful for debugging leaking timers, to find out where the timer was set up. """
12 def __init__(self, seconds, cb, *args, **kw):
14 seconds: The minimum number of seconds to wait before calling
15 cb: The callback to call when the timer has expired
16 *args: The arguments to pass to cb
17 **kw: The keyword arguments to pass to cb
19 This timer will not be run unless it is scheduled in a runloop by
20 calling timer.schedule() or runloop.add_timer(timer).
22 self.seconds = seconds
23 self.tpl = cb, args, kw
26 self.traceback = six.StringIO()
27 traceback.print_stack(file=self.traceback)
31 return not self.called
34 secs = getattr(self, 'seconds', None)
35 cb, args, kw = getattr(self, 'tpl', (None, None, None))
36 retval = "Timer(%s, %s, *%s, **%s)" % (
38 if _g_debug and hasattr(self, 'traceback'):
39 retval += '\n' + self.traceback.getvalue()
43 cb, args, kw = self.tpl
44 return self.__class__(self.seconds, cb, *args, **kw)
47 """Schedule this timer to run in the current runloop.
50 self.scheduled_time = get_hub().add_timer(self)
53 def __call__(self, *args):
56 cb, args, kw = self.tpl
62 except AttributeError:
66 """Prevent this timer from being called. If the timer has already
67 been called or canceled, has no effect.
71 get_hub().timer_canceled(self)
74 except AttributeError:
77 # No default ordering in 3.x. heapq uses <
78 # FIXME should full set be added?
79 def __lt__(self, other):
80 return id(self) < id(other)
83 class LocalTimer(Timer):
85 def __init__(self, *args, **kwargs):
86 self.greenlet = greenlet.getcurrent()
87 Timer.__init__(self, *args, **kwargs)
91 if self.greenlet is None or self.greenlet.dead:
93 return not self.called
95 def __call__(self, *args):
98 if self.greenlet is not None and self.greenlet.dead:
100 cb, args, kw = self.tpl