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import threading
import time
import collections
import library.python.import_tracing.lib.event as events
import library.python.import_tracing.lib.constants as constants
class ImportTracer:
def __init__(self):
self.events = collections.OrderedDict()
self.start_time = time.time()
def start_event(self, modname, filename, tid=None):
tid = tid if tid is not None else threading.current_thread().name
time_from_start = self._get_current_time_from_start()
new_event = events.Event(
modname=modname,
filename=filename,
tid=tid,
start_time=time_from_start,
end_time=None,
)
self.events[modname] = new_event
def finish_event(self, modname, filename, tid=None):
event = self.events[modname]
end_time = self._get_current_time_from_start()
event.end_time = end_time
def get_events(self, close_not_finished=False):
end_time = self._get_current_time_from_start()
for event in self.events.values():
if close_not_finished and event.end_time is None:
yield events.Event(
modname=event.modname,
filename=event.filename,
tid=event.tid,
start_time=event.start_time,
end_time=end_time,
)
else:
yield event
def _get_current_time_from_start(self):
return (time.time() - self.start_time) * constants.MCS_IN_SEC
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