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Diffstat (limited to 'sysdeps/nacl/lowlevellock-futex.h')
| -rw-r--r-- | sysdeps/nacl/lowlevellock-futex.h | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/sysdeps/nacl/lowlevellock-futex.h b/sysdeps/nacl/lowlevellock-futex.h deleted file mode 100644 index b614f25447..0000000000 --- a/sysdeps/nacl/lowlevellock-futex.h +++ /dev/null @@ -1,90 +0,0 @@ -/* Low-level locking access to futex facilities. NaCl version. - Copyright (C) 2015-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#ifndef _LOWLEVELLOCK_FUTEX_H -#define _LOWLEVELLOCK_FUTEX_H 1 - -#include <nacl-interfaces.h> -#include <time.h> - - -#pragma GCC diagnostic ignored "-Wunused-value" /* XXX */ - -/* Values for 'private' parameter of locking macros. Note pthreadP.h - optimizes for these exact values, though they are not required. */ -#define LLL_PRIVATE 0 -#define LLL_SHARED 128 - -#define FUTEX_PRIVATE_FLAG 0 /* XXX */ - - -/* Wait while *FUTEXP == VAL for an lll_futex_wake call on FUTEXP. */ -#define lll_futex_wait(futexp, val, private) \ - ((void) (private), \ - - __nacl_irt_futex.futex_wait_abs ((volatile int *) (futexp), val, NULL)) - -/* Wait until a lll_futex_wake call on FUTEXP, or TIMEOUT elapses. */ -#define lll_futex_timed_wait(futexp, val, timeout, private) \ - ({ \ - /* This timeout is relative, but the IRT call wants it absolute. */\ - const struct timespec *_to = (timeout); \ - struct timespec _ts; \ - int _err = 0; \ - if (_to != NULL \ - && __glibc_likely ((_err = __nacl_irt_clock.clock_gettime \ - (CLOCK_REALTIME, &_ts)) == 0)) \ - { \ - _ts.tv_sec += _to->tv_sec; \ - _ts.tv_nsec += _to->tv_nsec; \ - while (_ts.tv_nsec >= 1000000000) \ - { \ - _ts.tv_nsec -= 1000000000; \ - ++_ts.tv_sec; \ - } \ - _to = &_ts; \ - } \ - if (_err == 0) \ - _err = __nacl_irt_futex.futex_wait_abs \ - ((volatile int *) (futexp), val, _to); \ - (void) (private); \ - -_err; \ - }) - -/* Wake up up to NR waiters on FUTEXP. */ -#define lll_futex_wake(futexp, nr, private) \ - ({ \ - int _woken; \ - (void) (private); \ - - __nacl_irt_futex.futex_wake ((volatile int *) (futexp), nr, &_woken); \ - }) - -/* NaCl does not support the requeue operation. The only use of this is in - pthread_cond_broadcast, which handles an error return by falling back to - plain lll_futex_wake. */ -#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \ - ((futexp), (nr_wake), (nr_move), (mutex), (val), (private), -ENOSYS) - -/* NaCl does not support the special wake-unlock operation. The only use - of this is in pthread_cond_signal, which handles an error return by - falling back to plain lll_futex_wake. */ -/* Wake up up to NR_WAKE waiters on FUTEXP and NR_WAKE2 on FUTEXP2. */ -#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \ - ((futexp), (nr_wake), (nr_wake2), (futexp2), (private), -ENOSYS) - - -#endif /* lowlevellock-futex.h */ |