media/webrtc/trunk/build/android/pylib/io_stats_parser.py

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/media/webrtc/trunk/build/android/pylib/io_stats_parser.py	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,32 @@
     1.4 +# Copyright (c) 2012 The Chromium Authors. All rights reserved.
     1.5 +# Use of this source code is governed by a BSD-style license that can be
     1.6 +# found in the LICENSE file.
     1.7 +
     1.8 +"""Provides an interface to communicate with the device via the adb command.
     1.9 +
    1.10 +Assumes adb binary is currently on system path.
    1.11 +"""
    1.12 +
    1.13 +
    1.14 +import collections
    1.15 +
    1.16 +
    1.17 +def ParseIoStatsLine(line):
    1.18 +  """Parses a line of io stats into a IoStats named tuple."""
    1.19 +  # Field definitions: http://www.kernel.org/doc/Documentation/iostats.txt
    1.20 +  IoStats = collections.namedtuple('IoStats',
    1.21 +                                   ['device',
    1.22 +                                    'num_reads_issued',
    1.23 +                                    'num_reads_merged',
    1.24 +                                    'num_sectors_read',
    1.25 +                                    'ms_spent_reading',
    1.26 +                                    'num_writes_completed',
    1.27 +                                    'num_writes_merged',
    1.28 +                                    'num_sectors_written',
    1.29 +                                    'ms_spent_writing',
    1.30 +                                    'num_ios_in_progress',
    1.31 +                                    'ms_spent_doing_io',
    1.32 +                                    'ms_spent_doing_io_weighted',
    1.33 +                                    ])
    1.34 +  fields = line.split()
    1.35 +  return IoStats._make([fields[2]] + [int(f) for f in fields[3:]])

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