diff options
Diffstat (limited to 'nptl/pthreadP.h')
| -rw-r--r-- | nptl/pthreadP.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/nptl/pthreadP.h b/nptl/pthreadP.h index 13bdb11133..19efe1e35f 100644 --- a/nptl/pthreadP.h +++ b/nptl/pthreadP.h @@ -110,19 +110,23 @@ enum }; #define PTHREAD_MUTEX_PSHARED_BIT 128 +/* See concurrency notes regarding __kind in struct __pthread_mutex_s + in sysdeps/nptl/bits/thread-shared-types.h. */ #define PTHREAD_MUTEX_TYPE(m) \ - ((m)->__data.__kind & 127) + (atomic_load_relaxed (&((m)->__data.__kind)) & 127) /* Don't include NO_ELISION, as that type is always the same as the underlying lock type. */ #define PTHREAD_MUTEX_TYPE_ELISION(m) \ - ((m)->__data.__kind & (127|PTHREAD_MUTEX_ELISION_NP)) + (atomic_load_relaxed (&((m)->__data.__kind)) \ + & (127 | PTHREAD_MUTEX_ELISION_NP)) #if LLL_PRIVATE == 0 && LLL_SHARED == 128 # define PTHREAD_MUTEX_PSHARED(m) \ - ((m)->__data.__kind & 128) + (atomic_load_relaxed (&((m)->__data.__kind)) & 128) #else # define PTHREAD_MUTEX_PSHARED(m) \ - (((m)->__data.__kind & 128) ? LLL_SHARED : LLL_PRIVATE) + ((atomic_load_relaxed (&((m)->__data.__kind)) & 128) \ + ? LLL_SHARED : LLL_PRIVATE) #endif /* The kernel when waking robust mutexes on exit never uses |