1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 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 */ 15 16 #ifndef HICORO_IOPOLLER_H 17 #define HICORO_IOPOLLER_H 18 #ifndef _MSC_VER 19 #include <sys/epoll.h> 20 #include <sys/eventfd.h> 21 #endif 22 #include <thread> 23 #include <vector> 24 #include <map> 25 #include <atomic> 26 #include "ffrt_inner.h" 27 #include "internal_inc/non_copyable.h" 28 29 namespace ffrt { 30 struct WakeData { 31 int fd; 32 void* data; 33 }; 34 35 struct IOPoller: private NonCopyable { 36 IOPoller() noexcept; 37 38 virtual ~IOPoller() noexcept; 39 40 void WakeUp() noexcept; 41 bool CasStrong(std::atomic<int> &a, int cmp, int exc); 42 void WaitFdEvent(int fd) noexcept; 43 void PollOnce(int timeout = -1) noexcept; 44 45 private: 46 int m_epFd; 47 struct WakeData m_wakeData; 48 #ifndef _MSC_VER 49 std::vector<epoll_event> m_events; 50 #endif 51 }; 52 53 IOPoller& GetIOPoller() noexcept; 54 } 55 ffrt_wait_fd(int fd)56static inline void ffrt_wait_fd(int fd) 57 { 58 #ifndef _MSC_VER 59 ffrt::GetIOPoller().WaitFdEvent(fd); 60 #endif 61 } 62 #endif 63