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# Copyright 2017 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.
import logging
import os
import re
import tempfile
import time
from devil.utils import cmd_helper
from pylib import constants
_STACK_TOOL = os.path.join(os.path.dirname(__file__), '..', '..', '..', '..',
'third_party', 'android_platform', 'development',
'scripts', 'stack')
ABI_REG = re.compile('ABI: \'(.+?)\'')
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)
class Symbolizer(object):
"""A helper class to symbolize stack."""
def __init__(self, apk_under_test=None):
self._apk_under_test = apk_under_test
self._time_spent_symbolizing = 0
def __del__(self):
self.CleanUp()
def CleanUp(self):
"""Clean up the temporary directory of apk libs."""
if self._time_spent_symbolizing > 0:
logging.info(
'Total time spent symbolizing: %.2fs', self._time_spent_symbolizing)
def ExtractAndResolveNativeStackTraces(self, data_to_symbolize,
device_abi, include_stack=True):
"""Run the stack tool for given input.
Args:
data_to_symbolize: a list of strings to symbolize.
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.
"""
if not os.path.exists(_STACK_TOOL):
logging.warning('%s missing. Unable to resolve native stack traces.',
_STACK_TOOL)
return
arch = _DeviceAbiToArch(device_abi)
if not arch:
logging.warning('No device_abi can be found.')
return
cmd = [_STACK_TOOL, '--arch', arch, '--output-directory',
constants.GetOutDirectory(), '--more-info']
env = dict(os.environ)
env['PYTHONDONTWRITEBYTECODE'] = '1'
with tempfile.NamedTemporaryFile(mode='w') as f:
f.write('\n'.join(data_to_symbolize))
f.flush()
start = time.time()
try:
_, output = cmd_helper.GetCmdStatusAndOutput(cmd + [f.name], env=env)
finally:
self._time_spent_symbolizing += time.time() - start
for line in output.splitlines():
if not include_stack and 'Stack Data:' in line:
break
yield line
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