diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S index 7c27b94623..8348f6e017 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S @@ -109,7 +109,9 @@ pthread_barrier_wait: movl $SYS_futex, %eax ENTER_KERNEL - /* Release the mutex. */ + /* Release the mutex. We cannot release the lock before + waking the waiting threads since otherwise a new thread might + arrive and gets waken up, too. */ LOCK incl MUTEX(%ebx) jng 4f |