1# Copyright (C) 2022 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15import concurrent.futures as cf 16from typing import Optional 17 18 19class PlatformDelegate: 20 """Abstracts operations which can vary based on platform.""" 21 22 def create_query_executor(self, trace_count: int 23 ) -> Optional[cf.ThreadPoolExecutor]: 24 return None 25 26 def create_load_executor(self, 27 trace_count: int) -> Optional[cf.ThreadPoolExecutor]: 28 return None 29