1# Copyright 2013 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import telemetry.core.timeline.event as timeline_event
6
7class Sample(timeline_event.TimelineEvent):
8  ''' A Sample represents a sample taken at an instant in time
9  plus parameters associated with that sample.
10
11  NOTE: The Sample class implements the same interface as
12  Slice. These must be kept in sync.
13
14  All time units are stored in milliseconds.
15  '''
16  def __init__(self, parent_thread, category, name, timestamp, args=None):
17    super(Sample, self).__init__(
18        category, name, timestamp, 0, args=args)
19    self.parent_thread = parent_thread
20