diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/lowlevellock.c')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/lowlevellock.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/lowlevellock.c b/nptl/sysdeps/unix/sysv/linux/lowlevellock.c index db10573a45..eb3e689b9e 100644 --- a/nptl/sysdeps/unix/sysv/linux/lowlevellock.c +++ b/nptl/sysdeps/unix/sysv/linux/lowlevellock.c @@ -27,13 +27,15 @@ void __lll_lock_wait (int *futex, int val) { + /* In the loop we are going to add 2 instead of 1 which is what + the caller did. Account for that. */ + --val; do { - lll_futex_wait (futex, val + 1); - val = atomic_exchange_and_add (futex, 1); + lll_futex_wait (futex, val + 2); + val = atomic_exchange_and_add (futex, 2); } while (val != 0); - *futex = 2; } hidden_proto (__lll_lock_wait) |