annotate env/lib/python3.7/site-packages/galaxy/util/monitors.py @ 0:26e78fe6e8c4 draft

"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 from __future__ import absolute_import
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2
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3 import logging
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4 import threading
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5
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6 from .sleeper import Sleeper
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7 from .web_compat import register_postfork_function
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8
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9 log = logging.getLogger(__name__)
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10
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11 DEFAULT_MONITOR_THREAD_JOIN_TIMEOUT = 5
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12
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13
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14 class Monitors(object):
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15
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16 def _init_monitor_thread(self, name, target_name=None, target=None, start=False, config=None):
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17 self.monitor_join_sleep = getattr(config, "monitor_thread_join_timeout", DEFAULT_MONITOR_THREAD_JOIN_TIMEOUT)
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18 self.monitor_join = self.monitor_join_sleep > 0
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19 self.monitor_running = True
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20
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21 if target is not None:
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22 assert target_name is None
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23 monitor_func = target
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24 else:
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25 target_name = target_name or "monitor"
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26 monitor_func = getattr(self, target_name)
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27 self.sleeper = Sleeper()
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28 self.monitor_thread = threading.Thread(name=name, target=monitor_func)
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29 self.monitor_thread.setDaemon(True)
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30 self._start = start
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31 register_postfork_function(self.start_monitoring)
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32
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33 def _init_noop_monitor(self):
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34 self.sleeper = None
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35 self.monitor_join = False
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36
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37 def start_monitoring(self):
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38 if self._start:
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39 self.monitor_thread.start()
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40
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41 def stop_monitoring(self):
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42 self.monitor_running = False
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43
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44 def _monitor_sleep(self, sleep_amount):
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45 self.sleeper.sleep(sleep_amount)
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46
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47 def shutdown_monitor(self):
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48 self.stop_monitoring()
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49 if self.sleeper is not None:
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50 self.sleeper.wake()
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51 if self.monitor_join:
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52 log.debug("Joining monitor thread")
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53 self.monitor_thread.join(self.monitor_join_sleep)