Arnaldo Carvalho de Melo | fb71c86c | 2019-09-03 10:56:06 -0300 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Arnaldo Carvalho de Melo | 0a7c74e | 2017-04-04 13:15:04 -0300 | [diff] [blame] | 2 | #include "util.h" |
| 3 | #include "rwsem.h" |
| 4 | |
| 5 | int init_rwsem(struct rw_semaphore *sem) |
| 6 | { |
| 7 | return pthread_rwlock_init(&sem->lock, NULL); |
| 8 | } |
| 9 | |
| 10 | int exit_rwsem(struct rw_semaphore *sem) |
| 11 | { |
| 12 | return pthread_rwlock_destroy(&sem->lock); |
| 13 | } |
| 14 | |
| 15 | int down_read(struct rw_semaphore *sem) |
| 16 | { |
| 17 | return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock); |
| 18 | } |
| 19 | |
| 20 | int up_read(struct rw_semaphore *sem) |
| 21 | { |
| 22 | return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock); |
| 23 | } |
| 24 | |
| 25 | int down_write(struct rw_semaphore *sem) |
| 26 | { |
| 27 | return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock); |
| 28 | } |
| 29 | |
| 30 | int up_write(struct rw_semaphore *sem) |
| 31 | { |
| 32 | return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock); |
| 33 | } |