1 /*
2  * Copyright (c) 2020 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 #ifndef LITE_LOCK_FREE_QUEUE_H
16 #define LITE_LOCK_FREE_QUEUE_H
17 
18 #include <ohos_types.h>
19 
20 #ifdef __cplusplus
21 #if __cplusplus
22 extern "C" {
23 #endif
24 #endif
25 
26 typedef struct LockFreeQueue LockFreeQueue;
27 struct LockFreeQueue {
28     uint32 write;
29     uint32 read;
30     uint32 itemSize;
31     uint32 totalSize;
32     uint8 buffer[0];
33 };
34 LockFreeQueue *LFQUE_Create(int size, int count);
35 
36 BOOL LFQUE_IsEmpty(LockFreeQueue *queue);
37 
38 BOOL LFQUE_IsFull(LockFreeQueue *queue);
39 
40 int LFQUE_Push(LockFreeQueue *queue, const void *element, uint8 pri);
41 
42 int LFQUE_Pop(LockFreeQueue *queue, void *element, uint8 *pri);
43 
44 #ifdef __cplusplus
45 #if __cplusplus
46 }
47 #endif
48 #endif
49 #endif // LITE_LOCK_FREE_QUEUE_H
50