blob: 5c74a5cf9ce95321d6511d5f18953cbf2809048a [file] [log] [blame]
#!/usr/bin/env python3
# Copyright (c) 2022, the R8 project authors. Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
import argparse
import sys
# Parses a list of class and method descriptors, prefixed with one or more flags
# 'H' (hot), 'S' (startup), 'P' (post startup).
# Example:
# HSPLandroidx/compose/runtime/ComposerImpl;->updateValue(Ljava/lang/Object;)V
# HSPLandroidx/compose/runtime/ComposerImpl;->updatedNodeCount(I)I
# HLandroidx/compose/runtime/ComposerImpl;->validateNodeExpected()V
# PLandroidx/compose/runtime/CompositionImpl;->applyChanges()V
# HLandroidx/compose/runtime/ComposerKt;->findLocation(Ljava/util/List;I)I
# Landroidx/compose/runtime/ComposerImpl;
# See also
def parse_art_profile(lines):
art_profile = {}
flags_to_name = { 'H': 'hot', 'S': 'startup', 'P': 'post_startup' }
for line in lines:
line = line.strip()
if not line:
flags = { 'hot': False, 'startup': False, 'post_startup': False }
while line[0] in flags_to_name:
flag_abbreviation = line[0]
flag_name = flags_to_name.get(flag_abbreviation)
flags[flag_name] = True
line = line[1:]
while line.startswith('['):
line = line[1:]
assert line.startswith('L'), line
descriptor = line
art_profile[descriptor] = flags
return art_profile
def transform_art_profile_to_r8_startup_list(
art_profile, generalize_synthetics=False):
r8_startup_list = {}
for startup_descriptor, flags in art_profile.items():
transformed_startup_descriptor = transform_synthetic_descriptor(
startup_descriptor) if generalize_synthetics else startup_descriptor
r8_startup_list[transformed_startup_descriptor] = {
'conditional_startup': False,
'hot': flags['hot'],
'startup': flags['startup'],
'post_startup': flags['post_startup']
return r8_startup_list
def transform_synthetic_descriptor(descriptor):
companion_class_index = descriptor.find(COMPANION_CLASS_SUFFIX)
if companion_class_index >= 0:
return SYNTHETIC_PREFIX + descriptor[0:companion_class_index] + ';'
external_synthetic_index = descriptor.find(EXTERNAL_SYNTHETIC_SUFFIX)
if external_synthetic_index >= 0:
return SYNTHETIC_PREFIX + descriptor[0:external_synthetic_index] + ';'
return descriptor
def filter_r8_startup_list(r8_startup_list, options):
filtered_r8_startup_list = {}
for startup_descriptor, flags in r8_startup_list.items():
if not options.include_post_startup \
and flags.get('post_startup') \
and not flags.get('startup'):
filtered_r8_startup_list[startup_descriptor] = flags
return filtered_r8_startup_list
def parse_options(argv):
result = argparse.ArgumentParser(
description='Utilities for converting an ART profile into an R8 startup '
result.add_argument('--art-profile', help='Path to the ART profile')
help='Include post startup classes and methods in the R8 '
'startup list',
result.add_argument('--out', help='Where to store the R8 startup list')
options, args = result.parse_known_args(argv)
return options, args
def main(argv):
(options, args) = parse_options(argv)
with open(options.art_profile, 'r') as f:
art_profile = parse_art_profile(
r8_startup_list = transform_art_profile_to_r8_startup_list(art_profile)
filtered_r8_startup_list = filter_r8_startup_list(r8_startup_list, options)
if options.out is not None:
with open(options.out, 'w') as f:
for startup_descriptor, flags in filtered_r8_startup_list.items():
for startup_descriptor, flags in filtered_r8_startup_list.items():
if __name__ == '__main__':