1 /*
2 * Copyright (c) 2021-2022 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 "hks_rwlock.h"
17
18 #include <pthread.h>
19
20 #include "hks_mem.h"
21 #include "hks_template.h"
22
23 struct HksRwlock {
24 pthread_rwlock_t lock;
25 };
26
HksRwlockCreate(void)27 HksRwlock *HksRwlockCreate(void)
28 {
29 HksRwlock *rwLock = (HksRwlock *)HksMalloc(sizeof(HksRwlock));
30 if (rwLock != NULL) {
31 int result = pthread_rwlock_init(&rwLock->lock, NULL);
32 if (result != 0) {
33 HKS_FREE(rwLock);
34 rwLock = NULL;
35 }
36 }
37 return rwLock;
38 }
39
HksRwlockLockRead(HksRwlock * lock)40 int32_t HksRwlockLockRead(HksRwlock *lock)
41 {
42 HKS_IF_NULL_RETURN(lock, -1)
43
44 return pthread_rwlock_rdlock(&lock->lock);
45 }
46
HksRwlockUnlockRead(HksRwlock * lock)47 int32_t HksRwlockUnlockRead(HksRwlock *lock)
48 {
49 HKS_IF_NULL_RETURN(lock, -1)
50
51 return pthread_rwlock_unlock(&lock->lock);
52 }
53
HksRwlockLockWrite(HksRwlock * lock)54 int32_t HksRwlockLockWrite(HksRwlock *lock)
55 {
56 HKS_IF_NULL_RETURN(lock, -1)
57
58 return pthread_rwlock_wrlock(&lock->lock);
59 }
60
HksRwlockUnlockWrite(HksRwlock * lock)61 int32_t HksRwlockUnlockWrite(HksRwlock *lock)
62 {
63 HKS_IF_NULL_RETURN(lock, -1)
64
65 return pthread_rwlock_unlock(&lock->lock);
66 }
67
HksRwlockClose(HksRwlock * lock)68 void HksRwlockClose(HksRwlock *lock)
69 {
70 if (lock == NULL) {
71 return;
72 }
73
74 pthread_rwlock_destroy(&lock->lock);
75 HKS_FREE(lock);
76 }
77