1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _MEM_H_
33 #define _MEM_H_
34 #include <linux/types.h>
35 #include "teek_ns_client.h"
36
37 int TcMemInit(void);
38 void TcMemDestroy(void);
39
40 TcNsSharedMem *TcMemAllocate(size_t len);
41 void TcMemFree(TcNsSharedMem *sharedMem);
42
GetSharememStruct(struct TagTcNsSharedMem * sharemem)43 static inline void GetSharememStruct(struct TagTcNsSharedMem *sharemem)
44 {
45 if (sharemem != NULL) {
46 atomic_inc(&sharemem->usage);
47 }
48 }
49
PutSharememStruct(struct TagTcNsSharedMem * sharemem)50 static inline void PutSharememStruct(struct TagTcNsSharedMem *sharemem)
51 {
52 if (sharemem != NULL) {
53 if (atomic_dec_and_test(&sharemem->usage)) {
54 TcMemFree(sharemem);
55 }
56 }
57 }
58 #endif
59