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#!/usr/bin/env python
#
# Copyright 2013 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.
#
# Find the most recent tombstone file(s) on all connected devices
# and prints their stacks.
#
# Assumes tombstone file was created with current symbols.
import datetime
import logging
import multiprocessing
import os
import subprocess
import sys
import optparse
from pylib import android_commands
def _ListTombstones(adb):
"""List the tombstone files on the device.
Args:
adb: An instance of AndroidCommands.
Yields:
Tuples of (tombstone filename, date time of file on device).
"""
lines = adb.RunShellCommand('TZ=UTC su -c ls -a -l /data/tombstones')
for line in lines:
if 'tombstone' in line and not 'No such file or directory' in line:
details = line.split()
t = datetime.datetime.strptime(details[-3] + ' ' + details[-2],
'%Y-%m-%d %H:%M')
yield details[-1], t
def _GetDeviceDateTime(adb):
"""Determine the date time on the device.
Args:
adb: An instance of AndroidCommands.
Returns:
A datetime instance.
"""
device_now_string = adb.RunShellCommand('TZ=UTC date')
return datetime.datetime.strptime(
device_now_string[0], '%a %b %d %H:%M:%S %Z %Y')
def _GetTombstoneData(adb, tombstone_file):
"""Retrieve the tombstone data from the device
Args:
tombstone_file: the tombstone to retrieve
Returns:
A list of lines
"""
return adb.GetProtectedFileContents('/data/tombstones/' + tombstone_file)
def _EraseTombstone(adb, tombstone_file):
"""Deletes a tombstone from the device.
Args:
tombstone_file: the tombstone to delete.
"""
return adb.RunShellCommand('su -c rm /data/tombstones/' + tombstone_file)
def _ResolveSymbols(tombstone_data, include_stack):
"""Run the stack tool for given tombstone input.
Args:
tombstone_data: a list of strings of tombstone data.
include_stack: boolean whether to include stack data in output.
Yields:
A string for each line of resolved stack output.
"""
stack_tool = os.path.join(os.path.dirname(__file__), '..', '..',
'third_party', 'android_platform', 'development',
'scripts', 'stack')
proc = subprocess.Popen(stack_tool, stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
output = proc.communicate(input='\n'.join(tombstone_data))[0]
for line in output.split('\n'):
if not include_stack and 'Stack Data:' in line:
break
yield line
def _ResolveTombstone(tombstone):
lines = []
lines += [tombstone['file'] + ' created on ' + str(tombstone['time']) +
', about this long ago: ' +
(str(tombstone['device_now'] - tombstone['time']) +
' Device: ' + tombstone['serial'])]
print '\n'.join(lines)
print 'Resolving...'
lines += _ResolveSymbols(tombstone['data'], tombstone['stack'])
return lines
def _ResolveTombstones(jobs, tombstones):
"""Resolve a list of tombstones.
Args:
jobs: the number of jobs to use with multiprocess.
tombstones: a list of tombstones.
"""
if not tombstones:
print 'No device attached? Or no tombstones?'
return
if len(tombstones) == 1:
data = _ResolveTombstone(tombstones[0])
else:
pool = multiprocessing.Pool(processes=jobs)
data = pool.map(_ResolveTombstone, tombstones)
data = ['\n'.join(d) for d in data]
print '\n'.join(data)
def _GetTombstonesForDevice(adb, options):
"""Returns a list of tombstones on a given adb connection.
Args:
adb: An instance of Androidcommands.
options: command line arguments from OptParse
"""
ret = []
all_tombstones = list(_ListTombstones(adb))
if not all_tombstones:
print 'No device attached? Or no tombstones?'
return ret
# Sort the tombstones in date order, descending
all_tombstones.sort(cmp=lambda a, b: cmp(b[1], a[1]))
# Only resolve the most recent unless --all-tombstones given.
tombstones = all_tombstones if options.all_tombstones else [all_tombstones[0]]
device_now = _GetDeviceDateTime(adb)
for tombstone_file, tombstone_time in tombstones:
ret += [{'serial': adb.Adb().GetSerialNumber(),
'device_now': device_now,
'time': tombstone_time,
'file': tombstone_file,
'stack': options.stack,
'data': _GetTombstoneData(adb, tombstone_file)}]
# Erase all the tombstones if desired.
if options.wipe_tombstones:
for tombstone_file, _ in all_tombstones:
_EraseTombstone(adb, tombstone_file)
return ret
def main():
parser = optparse.OptionParser()
parser.add_option('--device',
help='The serial number of the device. If not specified '
'will use all devices.')
parser.add_option('-a', '--all-tombstones', action='store_true',
help="""Resolve symbols for all tombstones, rather than just
the most recent""")
parser.add_option('-s', '--stack', action='store_true',
help='Also include symbols for stack data')
parser.add_option('-w', '--wipe-tombstones', action='store_true',
help='Erase all tombstones from device after processing')
parser.add_option('-j', '--jobs', type='int',
default=4,
help='Number of jobs to use when processing multiple '
'crash stacks.')
options, args = parser.parse_args()
if options.device:
devices = [options.device]
else:
devices = android_commands.GetAttachedDevices()
tombstones = []
for device in devices:
adb = android_commands.AndroidCommands(device)
tombstones += _GetTombstonesForDevice(adb, options)
_ResolveTombstones(options.jobs, tombstones)
if __name__ == '__main__':
sys.exit(main())
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