tools/perf/util/rwsem.c

   1 #include "util.h"
   2 #include "rwsem.h"
   3
   4 int init_rwsem(struct rw_semaphore *sem)
   5 {
   6         return pthread_rwlock_init(&sem->lock, NULL);
   7 }
   8
   9 int exit_rwsem(struct rw_semaphore *sem)
  10 {
  11         return pthread_rwlock_destroy(&sem->lock);
  12 }
  13
  14 int down_read(struct rw_semaphore *sem)
  15 {
  16         return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock);
  17 }
  18
  19 int up_read(struct rw_semaphore *sem)
  20 {
  21         return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
  22 }
  23
  24 int down_write(struct rw_semaphore *sem)
  25 {
  26         return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock);
  27 }
  28
  29 int up_write(struct rw_semaphore *sem)
  30 {
  31         return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
  32 }