1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
// SPDX-License-Identifier: GPL-2.0
#include "util.h"
#include "rwsem.h"
#if RWS_ERRORCHECK
#include "mutex.h"
#endif
int init_rwsem(struct rw_semaphore *sem)
{
#if RWS_ERRORCHECK
mutex_init(&sem->mtx);
return 0;
#else
return pthread_rwlock_init(&sem->lock, NULL);
#endif
}
int exit_rwsem(struct rw_semaphore *sem)
{
#if RWS_ERRORCHECK
mutex_destroy(&sem->mtx);
return 0;
#else
return pthread_rwlock_destroy(&sem->lock);
#endif
}
int down_read(struct rw_semaphore *sem)
NO_THREAD_SAFETY_ANALYSIS
{
#if RWS_ERRORCHECK
mutex_lock(&sem->mtx);
return 0;
#else
return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock);
#endif
}
int up_read(struct rw_semaphore *sem)
NO_THREAD_SAFETY_ANALYSIS
{
#if RWS_ERRORCHECK
mutex_unlock(&sem->mtx);
return 0;
#else
return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
#endif
}
int down_write(struct rw_semaphore *sem)
NO_THREAD_SAFETY_ANALYSIS
{
#if RWS_ERRORCHECK
mutex_lock(&sem->mtx);
return 0;
#else
return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock);
#endif
}
int up_write(struct rw_semaphore *sem)
NO_THREAD_SAFETY_ANALYSIS
{
#if RWS_ERRORCHECK
mutex_unlock(&sem->mtx);
return 0;
#else
return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
#endif
}
|
