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:]])
