1 /* 2 * Copyright (C) 2021 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 CRPC_EVENT_LOOP_H 17 #define CRPC_EVENT_LOOP_H 18 19 #include "common.h" 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif 24 25 typedef struct FdMask FdMask; 26 struct FdMask { 27 int fd; 28 unsigned int mask; 29 }; 30 31 typedef struct EventLoop EventLoop; 32 struct EventLoop { 33 int maxFd; 34 int setSize; 35 FdMask *fdMasks; 36 int stop; 37 int epfd; 38 struct epoll_event *epEvents; 39 }; 40 41 /** 42 * @Description Create an Event Loop object 43 * 44 * @param size - Number of event type 45 * @return EventLoop* - pointer to the event loop object or NULL if failed 46 */ 47 EventLoop *CreateEventLoop(int size); 48 49 /** 50 * @Description Destroy Events loop 51 * 52 * @param loop - EventLoop object's pointer 53 */ 54 void DestroyEventLoop(EventLoop *loop); 55 56 /** 57 * @Description Stop Events Loop 58 * 59 * @param loop - EventLoop object's pointer 60 */ 61 void StopEventLoop(EventLoop *loop); 62 63 /** 64 * @Description Add an event on socket 65 * 66 * @param loop - EventLoop object's pointer 67 * @param fd - Socket fd 68 * @param addMask - Event mask 69 * @return int - 0 success; -1 add failed 70 */ 71 int AddFdEvent(EventLoop *loop, int fd, unsigned int addMask); 72 73 /** 74 * @Description Remove an event from socket fd 75 * 76 * @param loop - EventLoop object's pointer 77 * @param fd - Socket fd 78 * @param delMask - Event mask 79 * @return int - 0 success; -1 remove failed 80 */ 81 int DelFdEvent(EventLoop *loop, int fd, unsigned int delMask); 82 83 #ifdef __cplusplus 84 } 85 #endif 86 #endif