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 NSTACKX_EPOLL_H
17 #define NSTACKX_EPOLL_H
18 
19 #include "sys_epoll.h"
20 
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24 
25 #ifndef EPOLLIN
26 #define EPOLLIN 0x00000001U
27 #endif
28 
29 #ifndef EPOLLOUT
30 #define EPOLLOUT 0x00000004U
31 #endif
32 
33 #ifndef EPOLLERR
34 #define EPOLLERR 0x00000008U
35 #endif
36 
37 #ifndef EPOLLHUP
38 #define EPOLLHUP 0x00000010U
39 #endif
40 
41 typedef void (*TaskHandle)(void *arg);
42 
43 typedef struct {
44     EpollDesc epollfd;
45     TaskDesc taskfd;
46     TaskHandle readHandle;
47     TaskHandle writeHandle;
48     TaskHandle errorHandle;
49     void *ptr;
50     uint64_t count;
51 } EpollTask;
52 
53 NSTACKX_EXPORT int32_t RegisterEpollTask(EpollTask *task, uint32_t events);
54 NSTACKX_EXPORT int32_t DeRegisterEpollTask(EpollTask *task);
55 NSTACKX_EXPORT int32_t RefreshEpollTask(EpollTask *task, uint32_t events);
56 NSTACKX_EXPORT EpollDesc CreateEpollDesc(void);
57 NSTACKX_EXPORT int32_t EpollLoop(EpollDesc epollfd, int32_t timeout);
58 static inline bool IsEpollDescValid(EpollDesc epollfd);
59 static inline bool IsEpollDescEqual(EpollDesc epollfd1, EpollDesc epollfd2);
60 static inline void CloseEpollDesc(EpollDesc epollfd);
61 
62 #ifdef __cplusplus
63 }
64 #endif
65 
66 #endif // NSTACKX_EPOLL_H
67