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Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/ia64/nptl/lowlevellock.h')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/ia64/nptl/lowlevellock.h | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/ia64/nptl/lowlevellock.h b/ports/sysdeps/unix/sysv/linux/ia64/nptl/lowlevellock.h deleted file mode 100644 index 0105972b40..0000000000 --- a/ports/sysdeps/unix/sysv/linux/ia64/nptl/lowlevellock.h +++ /dev/null @@ -1,330 +0,0 @@ -/* Copyright (C) 2003-2014 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 - <http://www.gnu.org/licenses/>. */ - -#ifndef _LOWLEVELLOCK_H -#define _LOWLEVELLOCK_H 1 - -#include <time.h> -#include <sys/param.h> -#include <bits/pthreadtypes.h> -#include <ia64intrin.h> -#include <atomic.h> -#include <kernel-features.h> - -#define __NR_futex 1230 -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 -#define FUTEX_REQUEUE 3 -#define FUTEX_CMP_REQUEUE 4 -#define FUTEX_WAKE_OP 5 -#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) -#define FUTEX_LOCK_PI 6 -#define FUTEX_UNLOCK_PI 7 -#define FUTEX_TRYLOCK_PI 8 -#define FUTEX_WAIT_BITSET 9 -#define FUTEX_WAKE_BITSET 10 -#define FUTEX_WAIT_REQUEUE_PI 11 -#define FUTEX_CMP_REQUEUE_PI 12 -#define FUTEX_PRIVATE_FLAG 128 -#define FUTEX_CLOCK_REALTIME 256 - -#define FUTEX_BITSET_MATCH_ANY 0xffffffff - -/* Values for 'private' parameter of locking macros. Yes, the - definition seems to be backwards. But it is not. The bit will be - reversed before passing to the system call. */ -#define LLL_PRIVATE 0 -#define LLL_SHARED FUTEX_PRIVATE_FLAG - - -#if !defined NOT_IN_libc || defined IS_IN_rtld -/* In libc.so or ld.so all futexes are private. */ -# ifdef __ASSUME_PRIVATE_FUTEX -# define __lll_private_flag(fl, private) \ - ((fl) | FUTEX_PRIVATE_FLAG) -# else -# define __lll_private_flag(fl, private) \ - ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) -# endif -#else -# ifdef __ASSUME_PRIVATE_FUTEX -# define __lll_private_flag(fl, private) \ - (((fl) | FUTEX_PRIVATE_FLAG) ^ (private)) -# else -# define __lll_private_flag(fl, private) \ - (__builtin_constant_p (private) \ - ? ((private) == 0 \ - ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \ - : (fl)) \ - : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \ - & THREAD_GETMEM (THREAD_SELF, header.private_futex)))) -# endif -#endif - - -/* Delay in spinlock loop. */ -#define BUSY_WAIT_NOP asm ("hint @pause") - -#define lll_futex_wait(futex, val, private) \ - lll_futex_timed_wait (futex, val, NULL, private) - -#define lll_futex_timed_wait(ftx, val, timespec, private) \ -({ \ - DO_INLINE_SYSCALL(futex, 4, (long) (ftx), \ - __lll_private_flag (FUTEX_WAIT, private), \ - (int) (val), (long) (timespec)); \ - _r10 == -1 ? -_retval : _retval; \ -}) - -#define lll_futex_timed_wait_bitset(ftx, val, timespec, clockbit, private) \ -({ \ - int __op = FUTEX_WAIT_BITSET | (clockbit); \ - \ - DO_INLINE_SYSCALL(futex, 4, (long) (ftx), \ - __lll_private_flag (__op, private), \ - (int) (val), (long) (timespec), NULL /* Unused. */, \ - FUTEX_BITSET_MATCH_ANY); \ - _r10 == -1 ? -_retval : _retval; \ -}) - -#define lll_futex_wake(ftx, nr, private) \ -({ \ - DO_INLINE_SYSCALL(futex, 3, (long) (ftx), \ - __lll_private_flag (FUTEX_WAKE, private), \ - (int) (nr)); \ - _r10 == -1 ? -_retval : _retval; \ -}) - -#define lll_robust_dead(futexv, private) \ -do \ - { \ - int *__futexp = &(futexv); \ - atomic_or (__futexp, FUTEX_OWNER_DIED); \ - DO_INLINE_SYSCALL(futex, 3, (long) __futexp, \ - __lll_private_flag (FUTEX_WAKE, private), 1); \ - } \ -while (0) - -/* Returns non-zero if error happened, zero if success. */ -#define lll_futex_requeue(ftx, nr_wake, nr_move, mutex, val, private) \ -({ \ - DO_INLINE_SYSCALL(futex, 6, (long) (ftx), \ - __lll_private_flag (FUTEX_CMP_REQUEUE, private), \ - (int) (nr_wake), (int) (nr_move), (long) (mutex), \ - (int) val); \ - _r10 == -1; \ -}) - -/* Returns non-zero if error happened, zero if success. */ -#define lll_futex_wake_unlock(ftx, nr_wake, nr_wake2, ftx2, private) \ -({ \ - DO_INLINE_SYSCALL(futex, 6, (long) (ftx), \ - __lll_private_flag (FUTEX_WAKE_OP, private), \ - (int) (nr_wake), (int) (nr_wake2), (long) (ftx2), \ - FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ - _r10 == -1; \ -}) - -/* Priority Inheritance support. */ -#define lll_futex_wait_requeue_pi(futexp, val, mutex, private) \ - lll_futex_timed_wait_requeue_pi (futexp, val, NULL, 0, mutex, private) - -#define lll_futex_timed_wait_requeue_pi(futexp, val, timespec, clockbit, \ - mutex, private) \ -({ \ - int __op = FUTEX_WAIT_REQUEUE_PI | (clockbit); \ - \ - DO_INLINE_SYSCALL(futex, 5, (long) (futexp), \ - __lll_private_flag (__op, private), \ - (val), (timespec), mutex); \ - _r10 == -1; \ -}) - -#define lll_futex_cmp_requeue_pi(futexp, nr_wake, nr_move, mutex, val, priv) \ -({ \ - DO_INLINE_SYSCALL(futex, 6, (long) (futexp), \ - __lll_private_flag (FUTEX_CMP_REQUEUE_PI, priv), \ - (nr_wake), (nr_move), (mutex), (val)); \ - _r10 == -1 ? -_retval : _retval; \ -}) - - -#define __lll_trylock(futex) \ - (atomic_compare_and_exchange_val_acq (futex, 1, 0) != 0) -#define lll_trylock(futex) __lll_trylock (&(futex)) - - -#define __lll_robust_trylock(futex, id) \ - (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0) -#define lll_robust_trylock(futex, id) \ - __lll_robust_trylock (&(futex), id) - - -#define __lll_cond_trylock(futex) \ - (atomic_compare_and_exchange_val_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; -extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden; - - -#define __lll_lock(futex, private) \ - ((void) ({ \ - int *__futex = (futex); \ - if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, \ - 1, 0), 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) - - -#define __lll_robust_lock(futex, id, private) \ - ({ \ - int *__futex = (futex); \ - int __val = 0; \ - \ - if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \ - 0), 0)) \ - __val = __lll_robust_lock_wait (__futex, private); \ - __val; \ - }) -#define lll_robust_lock(futex, id, private) \ - __lll_robust_lock (&(futex), id, private) - - -#define __lll_cond_lock(futex, private) \ - ((void) ({ \ - int *__futex = (futex); \ - if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, 2, \ - 0), 0)) \ - __lll_lock_wait (__futex, private); \ - })) -#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private) - - -#define __lll_robust_cond_lock(futex, id, private) \ - ({ \ - int *__futex = (futex); \ - int __val = 0; \ - int __id = (id) | FUTEX_WAITERS; \ - \ - if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, \ - __id, 0), 0)) \ - __val = __lll_robust_lock_wait (__futex, private); \ - __val; \ - }) -#define lll_robust_cond_lock(futex, id, private) \ - __lll_robust_cond_lock (&(futex), id, private) - - -extern int __lll_timedlock_wait (int *futex, const struct timespec *, - int private) attribute_hidden; -extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *, - int private) attribute_hidden; - - -#define __lll_timedlock(futex, abstime, private) \ - ({ \ - int *__futex = (futex); \ - int __val = 0; \ - \ - if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, 1, \ - 0), 0)) \ - __val = __lll_timedlock_wait (__futex, abstime, private); \ - __val; \ - }) -#define lll_timedlock(futex, abstime, private) \ - __lll_timedlock (&(futex), abstime, private) - - -#define __lll_robust_timedlock(futex, abstime, id, private) \ - ({ \ - int *__futex = (futex); \ - int __val = 0; \ - \ - if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \ - 0), 0)) \ - __val = __lll_robust_timedlock_wait (__futex, abstime, private); \ - __val; \ - }) -#define lll_robust_timedlock(futex, abstime, id, private) \ - __lll_robust_timedlock (&(futex), abstime, id, private) - - -#define __lll_unlock(futex, private) \ - ((void) ({ \ - int *__futex = (futex); \ - int __val = atomic_exchange_rel (__futex, 0); \ - \ - if (__builtin_expect (__val > 1, 0)) \ - lll_futex_wake (__futex, 1, private); \ - })) -#define lll_unlock(futex, private) __lll_unlock(&(futex), private) - - -#define __lll_robust_unlock(futex, private) \ - ((void) ({ \ - int *__futex = (futex); \ - int __val = atomic_exchange_rel (__futex, 0); \ - \ - if (__builtin_expect (__val & FUTEX_WAITERS, 0)) \ - lll_futex_wake (__futex, 1, private); \ - })) -#define lll_robust_unlock(futex, private) \ - __lll_robust_unlock(&(futex), private) - - -#define lll_islocked(futex) \ - (futex != 0) - -/* Initializers for lock. */ -#define LLL_LOCK_INITIALIZER (0) -#define LLL_LOCK_INITIALIZER_LOCKED (1) - -/* The kernel notifies a process which uses CLONE_CHILD_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, LLL_SHARED); \ - } \ - 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; \ - }) - -#endif /* lowlevellock.h */ |