/* * Copyright (C) 2017 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. */ #pragma once #include #include namespace android { template class HandleGenerator { protected: static T getNextHandle(); }; template T HandleGenerator::getNextHandle() { static std::atomic mNextUniqueId(1); uint32_t id = mNextUniqueId++; while (id > std::numeric_limits::max()) { id -= std::numeric_limits::max(); } return static_cast(id); } } // namespace android