Source code for wlauto.workloads.dex2oat

#    Copyright 2014-2015 ARM Limited
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

# pylint: disable=no-member,attribute-defined-outside-init
import re
import os
import sys

from wlauto import Workload, Parameter, ExtensionLoader
from wlauto.exceptions import WorkloadError
from import ApkInfo

[docs]class Dex2oatBenchmark(Workload): name = 'dex2oat' description = """ Benchmarks the execution time of dex2oat (a key part of APK installation process). ART is a new Android runtime in KitKat, which replaces Dalvik VM. ART uses Ahead-Of-Time compilation. It pre-compiles ODEX files used by Dalvik using dex2oat tool as part of APK installation process. This workload benchmarks the time it take to compile an APK using dex2oat, which has a significant impact on the total APK installation time, and therefore user experience. """ supported_platforms = ['android'] command_template = 'dex2oat --dex-file={} --oat-file={} --instruction-set={} --dump-timing' run_timeout = 5 * 60 parameters = [ Parameter('instruction_set', default='arm64', allowed_values=['arm', 'arm64', 'x86', 'x86_64', 'mips'], description="""Specifies the instruction set to compile for. Only options supported by the target device can be used."""), ]
[docs] def init_resources(self, context): # TODO: find a better APK to use for this. peacekeeper = ExtensionLoader().get_workload('peacekeeper', self.device) self.apk_file = context.resolver.get(, variant_name='chrome') self.package = ApkInfo(self.apk_file).package
[docs] def setup(self, context): if self.device.getprop('persist.sys.dalvik.vm.lib.2') != '': raise WorkloadError('Android system must be using ART (rather than Dalvik) in order for dex2oat to work.') supported = [abi == 'armeabi' and 'arm' or abi.split('-')[0] for abi in self.device.supported_abi] if self.instruction_set not in supported: message = 'Instruction set "{}" is not supported by the device; (supported: {})' raise WorkloadError(message.format(self.instruction_set, supported)) on_device_apk = self.device.path.join(self.device.working_directory, os.path.basename(self.apk_file)) self.on_device_oat = on_device_apk.replace('.apk', '-{}.oat'.format(self.instruction_set)) self.command = self.command_template.format(on_device_apk, self.on_device_oat, self.instruction_set) if not self.device.file_exists(on_device_apk): self.device.push_file(self.apk_file, on_device_apk)
[docs] def run(self, context): self.device.execute(self.command, self.run_timeout, as_root=self.device.is_rooted)
[docs] def update_result(self, context): """ Retrieve the last dex2oat time from the logs. That will correspond with the run() method. The compilation time does not. Pulls out the compilation time and dex2oat execution time: I/dex2oat ( 2522): 1.8s Compile Dex File I/dex2oat ( 2522): dex2oat took 2.366s (threads: 6) """ logcat_log = os.path.join(context.output_directory, 'logcat.log') self.device.dump_logcat(logcat_log) regex_time = re.compile("^I\/dex2oat \( *[0-9]+\): dex2oat took (?P<time>[0-9]+\.?[0-9]*)(?P<unit>m?s)") regex_comp_time = re.compile("^I\/dex2oat \( *[0-9]+\): +(?P<time>[0-9]*\.?[0-9]*)(?P<unit>m?s) Compile Dex File") time_data, comp_time_data = None, None with open(logcat_log) as fh: for line in fh: match = if match: time_data = match.groupdict() match = if match: comp_time_data = match.groupdict() # Last dex2oat time wins. if time_data is not None: time = time_data['time'] if time_data['unit'] == "s": time = float(time) * 1000.0 context.result.add_metric('dex2oat_time', time, "ms", lower_is_better=True) if comp_time_data is not None: time = comp_time_data['time'] if comp_time_data['unit'] == "s": time = float(time) * 1000.0 context.result.add_metric('dex2oat_comp_time', time, "ms", lower_is_better=True)
[docs] def teardown(self, context): self.device.delete_file(self.on_device_oat)