diff options
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/util/rwsem.c | 34 | ||||
-rw-r--r-- | tools/perf/util/rwsem.h | 11 |
2 files changed, 45 insertions, 0 deletions
diff --git a/tools/perf/util/rwsem.c b/tools/perf/util/rwsem.c index f3d29d8ddc99..5109167f27f7 100644 --- a/tools/perf/util/rwsem.c +++ b/tools/perf/util/rwsem.c @@ -2,32 +2,66 @@ #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) { +#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) { +#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) { +#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) { +#if RWS_ERRORCHECK + mutex_unlock(&sem->mtx); + return 0; +#else return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock); +#endif } diff --git a/tools/perf/util/rwsem.h b/tools/perf/util/rwsem.h index 94565ad4d494..ef5cbc31d967 100644 --- a/tools/perf/util/rwsem.h +++ b/tools/perf/util/rwsem.h @@ -2,9 +2,20 @@ #define _PERF_RWSEM_H #include <pthread.h> +#include "mutex.h" + +/* + * Mutexes have additional error checking. Enable to use a mutex rather than a + * rwlock for debugging. + */ +#define RWS_ERRORCHECK 0 struct rw_semaphore { +#if RWS_ERRORCHECK + struct mutex mtx; +#else pthread_rwlock_t lock; +#endif }; int init_rwsem(struct rw_semaphore *sem); |