diff options
Diffstat (limited to 'libpthread/nptl/sem_init.c')
-rw-r--r-- | libpthread/nptl/sem_init.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libpthread/nptl/sem_init.c b/libpthread/nptl/sem_init.c new file mode 100644 index 000000000..0a224f3ad --- /dev/null +++ b/libpthread/nptl/sem_init.c @@ -0,0 +1,56 @@ +/* Copyright (C) 2002, 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <semaphore.h> +#include <lowlevellock.h> +#include "semaphoreP.h" +#include <bits/kernel-features.h> + + +int +__new_sem_init ( + sem_t *sem, + int pshared, + unsigned int value) +{ + /* Parameter sanity check. */ + if (__builtin_expect (value > SEM_VALUE_MAX, 0)) + { + __set_errno (EINVAL); + return -1; + } + + /* Map to the internal type. */ + struct new_sem *isem = (struct new_sem *) sem; + + /* Use the values the user provided. */ + isem->value = value; +#ifdef __ASSUME_PRIVATE_FUTEX + isem->private = pshared ? 0 : FUTEX_PRIVATE_FLAG; +#else + isem->private = pshared ? 0 : THREAD_GETMEM (THREAD_SELF, + header.private_futex); +#endif + + isem->nwaiters = 0; + + return 0; +} +weak_alias(__new_sem_init, sem_init) |