diff options
Diffstat (limited to 'nptl/pthread_mutex_timedlock.c')
| -rw-r--r-- | nptl/pthread_mutex_timedlock.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/nptl/pthread_mutex_timedlock.c b/nptl/pthread_mutex_timedlock.c index 28237b0e58..888c12fe28 100644 --- a/nptl/pthread_mutex_timedlock.c +++ b/nptl/pthread_mutex_timedlock.c @@ -53,6 +53,8 @@ __pthread_mutex_timedlock (pthread_mutex_t *mutex, /* We must not check ABSTIME here. If the thread does not block abstime must not be checked for a valid value. */ + /* See concurrency notes regarding mutex type which is loaded from __kind + in struct __pthread_mutex_s in sysdeps/nptl/bits/thread-shared-types.h. */ switch (__builtin_expect (PTHREAD_MUTEX_TYPE_ELISION (mutex), PTHREAD_MUTEX_TIMED_NP)) { @@ -338,8 +340,14 @@ __pthread_mutex_timedlock (pthread_mutex_t *mutex, case PTHREAD_MUTEX_PI_ROBUST_NORMAL_NP: case PTHREAD_MUTEX_PI_ROBUST_ADAPTIVE_NP: { - int kind = mutex->__data.__kind & PTHREAD_MUTEX_KIND_MASK_NP; - int robust = mutex->__data.__kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP; + int kind, robust; + { + /* See concurrency notes regarding __kind in struct __pthread_mutex_s + in sysdeps/nptl/bits/thread-shared-types.h. */ + int mutex_kind = atomic_load_relaxed (&(mutex->__data.__kind)); + kind = mutex_kind & PTHREAD_MUTEX_KIND_MASK_NP; + robust = mutex_kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP; + } if (robust) { @@ -509,7 +517,10 @@ __pthread_mutex_timedlock (pthread_mutex_t *mutex, case PTHREAD_MUTEX_PP_NORMAL_NP: case PTHREAD_MUTEX_PP_ADAPTIVE_NP: { - int kind = mutex->__data.__kind & PTHREAD_MUTEX_KIND_MASK_NP; + /* See concurrency notes regarding __kind in struct __pthread_mutex_s + in sysdeps/nptl/bits/thread-shared-types.h. */ + int kind = atomic_load_relaxed (&(mutex->__data.__kind)) + & PTHREAD_MUTEX_KIND_MASK_NP; oldval = mutex->__data.__lock; |