1 /* sem_post -- post to a POSIX semaphore. SPARC version.
2 Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 #include <lowlevellock.h>
24 #include <internaltypes.h>
25 #include <semaphore.h>
27 #include <shlib-compat.h>
30 __new_sem_post (sem_t *sem)
32 int *futex = (int *) sem, nr;
35 nr = atomic_increment_val (futex);
38 __sparc32_atomic_do_lock24 (futex + 1);
40 __sparc32_atomic_do_unlock24 (futex + 1);
42 int err = lll_futex_wake (futex, nr);
43 if (__builtin_expect (err, 0) < 0)
50 versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1);
51 #if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1)
52 strong_alias (__new_sem_post, __old_sem_post)
53 compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0);