| # Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Provides an interface to communicate with the device via the adb command. |
| |
| Assumes adb binary is currently on system path. |
| """ |
| |
| |
| import collections |
| |
| |
| def ParseIoStatsLine(line): |
| """Parses a line of io stats into a IoStats named tuple.""" |
| # Field definitions: http://www.kernel.org/doc/Documentation/iostats.txt |
| IoStats = collections.namedtuple('IoStats', |
| ['device', |
| 'num_reads_issued', |
| 'num_reads_merged', |
| 'num_sectors_read', |
| 'ms_spent_reading', |
| 'num_writes_completed', |
| 'num_writes_merged', |
| 'num_sectors_written', |
| 'ms_spent_writing', |
| 'num_ios_in_progress', |
| 'ms_spent_doing_io', |
| 'ms_spent_doing_io_weighted', |
| ]) |
| fields = line.split() |
| return IoStats._make([fields[2]] + [int(f) for f in fields[3:]]) |
