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Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/mips/lowlevellock.h')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/mips/lowlevellock.h | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/mips/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/mips/lowlevellock.h deleted file mode 100644 index 7edb28794f..0000000000 --- a/nptl/sysdeps/unix/sysv/linux/mips/lowlevellock.h +++ /dev/null @@ -1,216 +0,0 @@ -/* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - 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. */ - -#ifndef _LOWLEVELLOCK_H -#define _LOWLEVELLOCK_H 1 - -#include <time.h> -#include <sys/param.h> -#include <bits/pthreadtypes.h> -#include <atomic.h> -#include <sysdep.h> - - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 -#define FUTEX_REQUEUE 3 -#define FUTEX_CMP_REQUEUE 4 - -/* Initializer for compatibility lock. */ -#define LLL_MUTEX_LOCK_INITIALIZER (0) - -#define lll_futex_wait(futexp, val) \ - ({ \ - INTERNAL_SYSCALL_DECL (__err); \ - long int __ret; \ - __ret = INTERNAL_SYSCALL (futex, __err, 4, \ - (futexp), FUTEX_WAIT, (val), 0); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ - }) - -#define lll_futex_timed_wait(futexp, val, timespec) \ - ({ \ - INTERNAL_SYSCALL_DECL (__err); \ - long int __ret; \ - __ret = INTERNAL_SYSCALL (futex, __err, 4, \ - (futexp), FUTEX_WAIT, (val), (timespec)); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ - }) - -#define lll_futex_wake(futexp, nr) \ - ({ \ - INTERNAL_SYSCALL_DECL (__err); \ - long int __ret; \ - __ret = INTERNAL_SYSCALL (futex, __err, 4, \ - (futexp), FUTEX_WAKE, (nr), 0); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ - }) - -/* Returns non-zero if error happened, zero if success. */ -#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val) \ - ({ \ - INTERNAL_SYSCALL_DECL (__err); \ - long int __ret; \ - __ret = INTERNAL_SYSCALL (futex, __err, 6, \ - (futexp), FUTEX_CMP_REQUEUE, (nr_wake), \ - (nr_move), (mutex), (val)); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ - }) - - -static inline int __attribute__((always_inline)) -__lll_mutex_trylock(int *futex) -{ - return atomic_compare_and_exchange_val_acq (futex, 1, 0) != 0; -} -#define lll_mutex_trylock(lock) __lll_mutex_trylock (&(lock)) - - -static inline int __attribute__((always_inline)) -__lll_mutex_cond_trylock(int *futex) -{ - return atomic_compare_and_exchange_val_acq (futex, 2, 0) != 0; -} -#define lll_mutex_cond_trylock(lock) __lll_mutex_cond_trylock (&(lock)) - - -extern void __lll_lock_wait (int *futex) attribute_hidden; - -static inline void __attribute__((always_inline)) -__lll_mutex_lock(int *futex) -{ - if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0) - __lll_lock_wait (futex); -} -#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex)) - - -static inline void __attribute__ ((always_inline)) -__lll_mutex_cond_lock (int *futex) -{ - if (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0) - __lll_lock_wait (futex); -} -#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex)) - - -extern int __lll_timedlock_wait (int *futex, const struct timespec *) - attribute_hidden; - -static inline int __attribute__ ((always_inline)) -__lll_mutex_timedlock (int *futex, const struct timespec *abstime) -{ - int result = 0; - if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0) - result = __lll_timedlock_wait (futex, abstime); - return result; -} -#define lll_mutex_timedlock(futex, abstime) \ - __lll_mutex_timedlock (&(futex), abstime) - - -static inline void __attribute__ ((always_inline)) -__lll_mutex_unlock (int *futex) -{ - int val = atomic_exchange_rel (futex, 0); - if (__builtin_expect (val > 1, 0)) - lll_futex_wake (futex, 1); -} -#define lll_mutex_unlock(futex) __lll_mutex_unlock(&(futex)) - - -static inline void __attribute__ ((always_inline)) -__lll_mutex_unlock_force (int *futex) -{ - (void) atomic_exchange_rel (futex, 0); - lll_futex_wake (futex, 1); -} -#define lll_mutex_unlock_force(futex) __lll_mutex_unlock_force(&(futex)) - - -#define lll_mutex_islocked(futex) \ - (futex != 0) - - -/* Our internal lock implementation is identical to the binary-compatible - mutex implementation. */ - -/* Type for lock object. */ -typedef int lll_lock_t; - -/* Initializers for lock. */ -#define LLL_LOCK_INITIALIZER (0) -#define LLL_LOCK_INITIALIZER_LOCKED (1) - -extern int lll_unlock_wake_cb (int *__futex) attribute_hidden; - -/* The states of a lock are: - 0 - untaken - 1 - taken by one user - >1 - taken by more users */ - -#define lll_trylock(lock) lll_mutex_trylock (lock) -#define lll_lock(lock) lll_mutex_lock (lock) -#define lll_unlock(lock) lll_mutex_unlock (lock) -#define lll_islocked(lock) lll_mutex_islocked (lock) - -/* The kernel notifies a process which uses CLONE_CLEARTID via futex - wakeup when the clone terminates. The memory location contains the - thread ID while the clone is running and is reset to zero - afterwards. */ -#define lll_wait_tid(tid) \ - do { \ - __typeof (tid) __tid; \ - while ((__tid = (tid)) != 0) \ - lll_futex_wait (&(tid), __tid); \ - } while (0) - -extern int __lll_timedwait_tid (int *, const struct timespec *) - attribute_hidden; - -#define lll_timedwait_tid(tid, abstime) \ - ({ \ - int __res = 0; \ - if ((tid) != 0) \ - __res = __lll_timedwait_tid (&(tid), (abstime)); \ - __res; \ - }) - - -/* Conditional variable handling. */ - -extern void __lll_cond_wait (pthread_cond_t *cond) - attribute_hidden; -extern int __lll_cond_timedwait (pthread_cond_t *cond, - const struct timespec *abstime) - attribute_hidden; -extern void __lll_cond_wake (pthread_cond_t *cond) - attribute_hidden; -extern void __lll_cond_broadcast (pthread_cond_t *cond) - attribute_hidden; - -#define lll_cond_wait(cond) \ - __lll_cond_wait (cond) -#define lll_cond_timedwait(cond, abstime) \ - __lll_cond_timedwait (cond, abstime) -#define lll_cond_wake(cond) \ - __lll_cond_wake (cond) -#define lll_cond_broadcast(cond) \ - __lll_cond_broadcast (cond) - -#endif /* lowlevellock.h */ |