diff options
Diffstat (limited to 'nptl/pthread_rwlock_trywrlock.c')
| -rw-r--r-- | nptl/pthread_rwlock_trywrlock.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/nptl/pthread_rwlock_trywrlock.c b/nptl/pthread_rwlock_trywrlock.c index 106f157c1d..0291fc9e3c 100644 --- a/nptl/pthread_rwlock_trywrlock.c +++ b/nptl/pthread_rwlock_trywrlock.c @@ -19,6 +19,7 @@ #include <errno.h> #include "pthreadP.h" #include <lowlevellock.h> +#include <elide.h> int @@ -26,6 +27,12 @@ __pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock) { int result = EBUSY; + if (ELIDE_TRYLOCK (rwlock->__data.__rwelision, + rwlock->__data.__lock == 0 + && rwlock->__data.__nr_readers == 0 + && rwlock->__data.__writer, 1)) + return 0; + lll_lock (rwlock->__data.__lock, rwlock->__data.__shared); if (rwlock->__data.__writer == 0 && rwlock->__data.__nr_readers == 0) |