diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/sem_post.c')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sem_post.c | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sem_post.c b/nptl/sysdeps/unix/sysv/linux/sem_post.c index 7f90325585..671b43f7f7 100644 --- a/nptl/sysdeps/unix/sysv/linux/sem_post.c +++ b/nptl/sysdeps/unix/sysv/linux/sem_post.c @@ -1,5 +1,5 @@ /* sem_post -- post to a POSIX semaphore. Generic futex-using version. - Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc. + Copyright (C) 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. @@ -29,36 +29,10 @@ int __new_sem_post (sem_t *sem) { - struct new_sem *isem = (struct new_sem *) sem; - - int nr = atomic_increment_val (&isem->value); - atomic_full_barrier (); - if (isem->nwaiters > 0) - { - int err = lll_futex_wake (&isem->value, 1, - // XYZ check mutex flag - LLL_SHARED); - if (__builtin_expect (err, 0) < 0) - { - __set_errno (-err); - return -1; - } - } - return 0; -} -versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1); - - -#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1) -int -attribute_compat_text_section -__old_sem_post (sem_t *sem) -{ int *futex = (int *) sem; int nr = atomic_increment_val (futex); - /* We always have to assume it is a shared semaphore. */ - int err = lll_futex_wake (futex, 1, LLL_SHARED); + int err = lll_futex_wake (futex, nr); if (__builtin_expect (err, 0) < 0) { __set_errno (-err); @@ -66,5 +40,8 @@ __old_sem_post (sem_t *sem) } return 0; } +versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1); +#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1) +strong_alias (__new_sem_post, __old_sem_post) compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0); #endif |