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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 itertools
import logging
import multiprocessing
import os
import re
import subprocess
import sys
import optparse
from pylib.device import adb_wrapper
from pylib.device import device_errors
from pylib.device import device_utils
from pylib.utils import run_tests_helper
_TZ_UTC = {'TZ': 'UTC'}
def _ListTombstones(device):
"""List the tombstone files on the device.
Args:
device: An instance of DeviceUtils.
Yields:
Tuples of (tombstone filename, date time of file on device).
"""
try:
lines = device.RunShellCommand(
['ls', '-a', '-l', '/data/tombstones'],
as_root=True, check_return=True, env=_TZ_UTC, timeout=60)
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
except device_errors.CommandFailedError:
logging.exception('Could not retrieve tombstones.')
def _GetDeviceDateTime(device):
"""Determine the date time on the device.
Args:
device: An instance of DeviceUtils.
Returns:
A datetime instance.
"""
device_now_string = device.RunShellCommand(
['date'], check_return=True, env=_TZ_UTC)
return datetime.datetime.strptime(
device_now_string[0], '%a %b %d %H:%M:%S %Z %Y')
def _GetTombstoneData(device, tombstone_file):
"""Retrieve the tombstone data from the device
Args:
device: An instance of DeviceUtils.
tombstone_file: the tombstone to retrieve
Returns:
A list of lines
"""
return device.ReadFile(
'/data/tombstones/' + tombstone_file, as_root=True).splitlines()
def _EraseTombstone(device, tombstone_file):
"""Deletes a tombstone from the device.
Args:
device: An instance of DeviceUtils.
tombstone_file: the tombstone to delete.
"""
return device.RunShellCommand(
['rm', '/data/tombstones/' + tombstone_file],
as_root=True, check_return=True)
def _DeviceAbiToArch(device_abi):
# The order of this list is significant to find the more specific match (e.g.,
# arm64) before the less specific (e.g., arm).
arches = ['arm64', 'arm', 'x86_64', 'x86_64', 'x86', 'mips']
for arch in arches:
if arch in device_abi:
return arch
raise RuntimeError('Unknown device ABI: %s' % device_abi)
def _ResolveSymbols(tombstone_data, include_stack, device_abi):
"""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.
device_abi: the default ABI of the device which generated the tombstone.
Yields:
A string for each line of resolved stack output.
"""
# Check if the tombstone data has an ABI listed, if so use this in preference
# to the device's default ABI.
for line in tombstone_data:
found_abi = re.search('ABI: \'(.+?)\'', line)
if found_abi:
device_abi = found_abi.group(1)
arch = _DeviceAbiToArch(device_abi)
if not arch:
return
stack_tool = os.path.join(os.path.dirname(__file__), '..', '..',
'third_party', 'android_platform', 'development',
'scripts', 'stack')
proc = subprocess.Popen([stack_tool, '--arch', arch], 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'])]
logging.info('\n'.join(lines))
logging.info('Resolving...')
lines += _ResolveSymbols(tombstone['data'], tombstone['stack'],
tombstone['device_abi'])
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:
logging.warning('No tombstones to resolve.')
return
if len(tombstones) == 1:
data = [_ResolveTombstone(tombstones[0])]
else:
pool = multiprocessing.Pool(processes=jobs)
data = pool.map(_ResolveTombstone, tombstones)
for tombstone in data:
for line in tombstone:
logging.info(line)
def _GetTombstonesForDevice(device, options):
"""Returns a list of tombstones on a given device.
Args:
device: An instance of DeviceUtils.
options: command line arguments from OptParse
"""
ret = []
all_tombstones = list(_ListTombstones(device))
if not all_tombstones:
logging.warning('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(device)
try:
for tombstone_file, tombstone_time in tombstones:
ret += [{'serial': str(device),
'device_abi': device.product_cpu_abi,
'device_now': device_now,
'time': tombstone_time,
'file': tombstone_file,
'stack': options.stack,
'data': _GetTombstoneData(device, tombstone_file)}]
except device_errors.CommandFailedError:
for line in device.RunShellCommand(
['ls', '-a', '-l', '/data/tombstones'],
as_root=True, check_return=True, env=_TZ_UTC, timeout=60):
logging.info('%s: %s', str(device), line)
raise
# Erase all the tombstones if desired.
if options.wipe_tombstones:
for tombstone_file, _ in all_tombstones:
_EraseTombstone(device, tombstone_file)
return ret
def main():
custom_handler = logging.StreamHandler(sys.stdout)
custom_handler.setFormatter(run_tests_helper.CustomFormatter())
logging.getLogger().addHandler(custom_handler)
logging.getLogger().setLevel(logging.INFO)
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, _ = parser.parse_args()
if options.device:
devices = [device_utils.DeviceUtils(options.device)]
else:
devices = device_utils.DeviceUtils.HealthyDevices()
# This must be done serially because strptime can hit a race condition if
# used for the first time in a multithreaded environment.
# http://bugs.python.org/issue7980
tombstones = []
for device in devices:
tombstones += _GetTombstonesForDevice(device, options)
_ResolveTombstones(options.jobs, tombstones)
if __name__ == '__main__':
sys.exit(main())
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