blob: f437961b08a0dba7777ae2e24753f189a23e87e7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
#!/usr/bin/env python
#
# Copyright (C) 2024 The Android Open Source Project
#
# 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
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""A tool for constructing UFFD GC flag."""
import argparse
import os
from uffd_gc_utils import should_enable_uffd_gc
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('kernel_version_file')
parser.add_argument('output')
return parser.parse_args()
def main():
args = parse_args()
enable_uffd_gc = should_enable_uffd_gc(args.kernel_version_file)
flag = '--runtime-arg -Xgc:CMC' if enable_uffd_gc else ''
# Prevent the file's mtime from being changed if the contents don't change.
# This avoids unnecessary dexpreopt reruns.
if os.path.isfile(args.output):
with open(args.output, 'r') as f:
if f.read() == flag:
return
with open(args.output, 'w') as f:
f.write(flag)
if __name__ == '__main__':
main()
|