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60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
# Copyright 2024 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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class FakeTimer(object):
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TIMERS = []
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def __init__(self, interval, function):
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self.interval = interval
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self.function = function
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self.started = False
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self.expired = False
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self.cancelled = False
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type(self).TIMERS.append(self)
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def __repr__(self):
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state_flags = ''.join([
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'S' if self.started else 'N',
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'X' if self.expired else '.',
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'C' if self.cancelled else '.'])
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return '<FakeTimer({}, {}) {} at {:#x}>'.format(
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self.interval, self.function, state_flags, id(self))
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def start(self):
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if self.started:
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raise RuntimeError("threads can only be started once")
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self.started = True
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def cancel(self):
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self.cancelled = True
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def expire(self):
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'''Simulate the timeout expiring.'''
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assert self.started, 'timer not yet started'
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assert not self.expired, 'timer can only expire once'
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self.expired = True
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self.function()
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@property
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def is_active(self):
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return self.started and not self.expired and not self.cancelled
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@classmethod
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def clear_timer_list(cls):
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cls.TIMERS = []
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@classmethod
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def get_active_timers(cls):
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return [t for t in cls.TIMERS if t.is_active]
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