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# -*- coding: utf-8 -*-
# Copyright 2019 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Tools for recording and reporting timeline of benchmark_run."""
from __future__ import print_function
__author__ = 'yunlian@google.com (Yunlian Jiang)'
import time
class Event(object):
"""One event on the timeline."""
def __init__(self, name='', cur_time=0):
self.name = name
self.timestamp = cur_time
class Timeline(object):
"""Use a dict to store the timeline."""
def __init__(self):
self.events = []
def Record(self, event):
for e in self.events:
assert e.name != event, (
'The event {0} is already recorded.'.format(event))
cur_event = Event(name=event, cur_time=time.time())
self.events.append(cur_event)
def GetEvents(self):
return ([e.name for e in self.events])
def GetEventDict(self):
tl = {}
for e in self.events:
tl[e.name] = e.timestamp
return tl
def GetEventTime(self, event):
for e in self.events:
if e.name == event:
return e.timestamp
raise IndexError('The event {0} is not recorded'.format(event))
def GetLastEventTime(self):
return self.events[-1].timestamp
def GetLastEvent(self):
return self.events[-1].name
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