diff options
Diffstat (limited to 'nptl/pthread_mutex_init.c')
| -rw-r--r-- | nptl/pthread_mutex_init.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/nptl/pthread_mutex_init.c b/nptl/pthread_mutex_init.c index d8fe473728..5cf290c272 100644 --- a/nptl/pthread_mutex_init.c +++ b/nptl/pthread_mutex_init.c @@ -101,7 +101,7 @@ __pthread_mutex_init (pthread_mutex_t *mutex, memset (mutex, '\0', __SIZEOF_PTHREAD_MUTEX_T); /* Copy the values from the attribute. */ - mutex->__data.__kind = imutexattr->mutexkind & ~PTHREAD_MUTEXATTR_FLAG_BITS; + int mutex_kind = imutexattr->mutexkind & ~PTHREAD_MUTEXATTR_FLAG_BITS; if ((imutexattr->mutexkind & PTHREAD_MUTEXATTR_FLAG_ROBUST) != 0) { @@ -111,17 +111,17 @@ __pthread_mutex_init (pthread_mutex_t *mutex, return ENOTSUP; #endif - mutex->__data.__kind |= PTHREAD_MUTEX_ROBUST_NORMAL_NP; + mutex_kind |= PTHREAD_MUTEX_ROBUST_NORMAL_NP; } switch (imutexattr->mutexkind & PTHREAD_MUTEXATTR_PROTOCOL_MASK) { case PTHREAD_PRIO_INHERIT << PTHREAD_MUTEXATTR_PROTOCOL_SHIFT: - mutex->__data.__kind |= PTHREAD_MUTEX_PRIO_INHERIT_NP; + mutex_kind |= PTHREAD_MUTEX_PRIO_INHERIT_NP; break; case PTHREAD_PRIO_PROTECT << PTHREAD_MUTEXATTR_PROTOCOL_SHIFT: - mutex->__data.__kind |= PTHREAD_MUTEX_PRIO_PROTECT_NP; + mutex_kind |= PTHREAD_MUTEX_PRIO_PROTECT_NP; int ceiling = (imutexattr->mutexkind & PTHREAD_MUTEXATTR_PRIO_CEILING_MASK) @@ -145,7 +145,11 @@ __pthread_mutex_init (pthread_mutex_t *mutex, FUTEX_PRIVATE_FLAG FUTEX_WAKE. */ if ((imutexattr->mutexkind & (PTHREAD_MUTEXATTR_FLAG_PSHARED | PTHREAD_MUTEXATTR_FLAG_ROBUST)) != 0) - mutex->__data.__kind |= PTHREAD_MUTEX_PSHARED_BIT; + mutex_kind |= PTHREAD_MUTEX_PSHARED_BIT; + + /* See concurrency notes regarding __kind in struct __pthread_mutex_s + in sysdeps/nptl/bits/thread-shared-types.h. */ + atomic_store_relaxed (&(mutex->__data.__kind), mutex_kind); /* Default values: mutex not used yet. */ // mutex->__count = 0; already done by memset |