diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/lowlevellock.h | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/sysdeps/unix/sysv/linux/sparc/lowlevellock.h deleted file mode 100644 index 6c005e8ffa..0000000000 --- a/sysdeps/unix/sysv/linux/sparc/lowlevellock.h +++ /dev/null @@ -1,130 +0,0 @@ -/* Copyright (C) 2003-2019 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. - - 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, see - <https://www.gnu.org/licenses/>. */ - -#ifndef _LOWLEVELLOCK_H -#define _LOWLEVELLOCK_H 1 - -#include <time.h> -#include <sys/param.h> -#include <bits/pthreadtypes.h> -#include <atomic.h> -#include <kernel-features.h> -#include <errno.h> - -#include <lowlevellock-futex.h> - -static inline int -__attribute__ ((always_inline)) -__lll_trylock (int *futex) -{ - return atomic_compare_and_exchange_val_24_acq (futex, 1, 0) != 0; -} -#define lll_trylock(futex) __lll_trylock (&(futex)) - -static inline int -__attribute__ ((always_inline)) -__lll_cond_trylock (int *futex) -{ - return atomic_compare_and_exchange_val_24_acq (futex, 2, 0) != 0; -} -#define lll_cond_trylock(futex) __lll_cond_trylock (&(futex)) - - -extern void __lll_lock_wait_private (int *futex) attribute_hidden; -extern void __lll_lock_wait (int *futex, int private) attribute_hidden; - -static inline void -__attribute__ ((always_inline)) -__lll_lock (int *futex, int private) -{ - int val = atomic_compare_and_exchange_val_24_acq (futex, 1, 0); - - if (__glibc_unlikely (val != 0)) - { - if (__builtin_constant_p (private) && private == LLL_PRIVATE) - __lll_lock_wait_private (futex); - else - __lll_lock_wait (futex, private); - } -} -#define lll_lock(futex, private) __lll_lock (&(futex), private) - -static inline void -__attribute__ ((always_inline)) -__lll_cond_lock (int *futex, int private) -{ - int val = atomic_compare_and_exchange_val_24_acq (futex, 2, 0); - - if (__glibc_unlikely (val != 0)) - __lll_lock_wait (futex, private); -} -#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private) - - -extern int __lll_clocklock_wait (int *futex, clockid_t, int val, - const struct timespec *, - int private) attribute_hidden; - -#define lll_timedwait(futex, val, clockid, abstime, private) \ - __lll_clocklock_wait (futex, val, clockid, abstime, private) - -static inline int -__attribute__ ((always_inline)) -__lll_clocklock (int *futex, clockid_t clockid, - const struct timespec *abstime, int private) -{ - int val = atomic_compare_and_exchange_val_24_acq (futex, 1, 0); - int result = 0; - - if (__glibc_unlikely (val != 0)) - { - do - { - int oldval = atomic_compare_and_exchange_val_24_acq (futex, val, 1); - if (oldval != 0) - { - result = __lll_clocklock_wait (futex, 2, clockid, abstime, - private); - if (result == EINVAL || result == ETIMEDOUT) - break; - } - } - while (atomic_compare_and_exchange_val_24_acq (futex, val, 0) != 0); - } - return result; -} -#define lll_clocklock(futex, clockid, abstime, private) \ - __lll_clocklock (&(futex), clockid, abstime, private) - -#define lll_unlock(lock, private) \ - ((void) ({ \ - int *__futex = &(lock); \ - int __private = (private); \ - int __val = atomic_exchange_24_rel (__futex, 0); \ - if (__glibc_unlikely (__val > 1)) \ - lll_futex_wake (__futex, 1, __private); \ - })) - -#define lll_islocked(futex) \ - (futex != 0) - -/* Initializers for lock. */ -#define LLL_LOCK_INITIALIZER (0) -#define LLL_LOCK_INITIALIZER_LOCKED (1) - -#endif /* lowlevellock.h */ |