The Tor Browser: media/webrtc/trunk/build/android/pylib/io_stats

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 # Copyright (c) 2012 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.

     5 """Provides an interface to communicate with the device via the adb command.

     7 Assumes adb binary is currently on system path.

     8 """

    11 import collections

    14 def ParseIoStatsLine(line):

    15   """Parses a line of io stats into a IoStats named tuple."""

    16   # Field definitions: http://www.kernel.org/doc/Documentation/iostats.txt

    17   IoStats = collections.namedtuple('IoStats',

    18                                    ['device',

    19                                     'num_reads_issued',

    20                                     'num_reads_merged',

    21                                     'num_sectors_read',

    22                                     'ms_spent_reading',

    23                                     'num_writes_completed',

    24                                     'num_writes_merged',

    25                                     'num_sectors_written',

    26                                     'ms_spent_writing',

    27                                     'num_ios_in_progress',

    28                                     'ms_spent_doing_io',

    29                                     'ms_spent_doing_io_weighted',

    30                                     ])

    31   fields = line.split()

    32   return IoStats._make([fields[2]] + [int(f) for f in fields[3:]])

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