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 #include "nstackx_event.h"
17 #include "nstackx_log.h"
18 #include "securec.h"
19
20 #define TAG "nStackXEvent"
21
22 void DeleteEventNode(EventNode *node);
23
SearchEventNode(const List * eventNodeChain,EpollDesc epollfd)24 EventNode *SearchEventNode(const List *eventNodeChain, EpollDesc epollfd)
25 {
26 List *pos = NULL;
27 List *tmp = NULL;
28 EventNode *node = NULL;
29
30 LIST_FOR_EACH_SAFE(pos, tmp, eventNodeChain) {
31 node = (EventNode *)pos;
32 if (IsEpollDescEqual(node->epollfd, epollfd)) {
33 break;
34 }
35 node = NULL;
36 }
37 return node;
38 }
39
EventModuleClean(const List * eventNodeChain,EpollDesc epollfd)40 void EventModuleClean(const List *eventNodeChain, EpollDesc epollfd)
41 {
42 List *pos = NULL;
43 EventNode *node = NULL;
44 if (eventNodeChain == NULL) {
45 LOGE(TAG, "eventNodeChain is null");
46 return;
47 }
48 LIST_FOR_EACH(pos, eventNodeChain) {
49 node = (EventNode *)pos;
50 if (IsEpollDescEqual(node->epollfd, epollfd)) {
51 break;
52 }
53 node = NULL;
54 }
55
56 if (node == NULL) {
57 return;
58 }
59
60 DeleteEventNode(node);
61 }
62
EventNodeChainClean(List * eventNodeChain)63 void EventNodeChainClean(List *eventNodeChain)
64 {
65 List *tmp = NULL;
66 List *pos = NULL;
67 EventNode *node = NULL;
68
69 if (eventNodeChain == NULL) {
70 LOGE(TAG, "eventNodeChain is null");
71 return;
72 }
73
74 LIST_FOR_EACH_SAFE(pos, tmp, eventNodeChain) {
75 node = (EventNode *)pos;
76 if (node != NULL) {
77 DeleteEventNode(node);
78 }
79 }
80 }
81
GetEpollTask(List * eventNodeChain,EpollDesc epollfd)82 EpollTask *GetEpollTask(List *eventNodeChain, EpollDesc epollfd)
83 {
84 if (eventNodeChain == NULL) {
85 LOGE(TAG, "eventNodeChain is null");
86 return NULL;
87 }
88
89 EventNode *node = SearchEventNode(eventNodeChain, epollfd);
90 if (node == NULL) {
91 LOGE(TAG, "Cannot find event node for %d", REPRESENT_EPOLL_DESC(epollfd));
92 return NULL;
93 }
94 return &node->task;
95 }
96