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