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Diffstat (limited to 'sysdeps/nptl/lowlevellock-futex.h')
| -rw-r--r-- | sysdeps/nptl/lowlevellock-futex.h | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/sysdeps/nptl/lowlevellock-futex.h b/sysdeps/nptl/lowlevellock-futex.h deleted file mode 100644 index 155080ac70..0000000000 --- a/sysdeps/nptl/lowlevellock-futex.h +++ /dev/null @@ -1,86 +0,0 @@ -/* Low-level locking access to futex facilities. Stub version. - Copyright (C) 2014-2017 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 <errno.h> - - -/* 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 - - -/* For most of these macros, the return value is never really used. - Nevertheless, the protocol is that each one returns a negated errno - code for failure or zero for success. (Note that the corresponding - Linux system calls can sometimes return positive values for success - cases too. We never use those values.) */ - - -/* Wait while *FUTEXP == VAL for an lll_futex_wake call on FUTEXP. */ -#define lll_futex_wait(futexp, val, private) \ - lll_futex_timed_wait (futexp, val, NULL, private) - -/* Wait until a lll_futex_wake call on FUTEXP, or TIMEOUT elapses. */ -#define lll_futex_timed_wait(futexp, val, timeout, private) \ - -ENOSYS - -/* This macro should be defined only if FUTEX_CLOCK_REALTIME is also defined. - If CLOCKBIT is zero, this is identical to lll_futex_timed_wait. - If CLOCKBIT has FUTEX_CLOCK_REALTIME set, then it's the same but - TIMEOUT is counted by CLOCK_REALTIME rather than CLOCK_MONOTONIC. */ -#define lll_futex_timed_wait_bitset(futexp, val, timeout, clockbit, private) \ - -ENOSYS - -/* Wake up up to NR waiters on FUTEXP. */ -#define lll_futex_wake(futexp, nr, private) \ - -ENOSYS - -/* Wake up up to NR_WAKE waiters on FUTEXP. Move up to NR_MOVE of the - rest from waiting on FUTEXP to waiting on MUTEX (a different futex). */ -#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \ - -ENOSYS - -/* 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) \ - -ENOSYS - - -/* Like lll_futex_wait (FUTEXP, VAL, PRIVATE) but with the expectation - that lll_futex_cmp_requeue_pi (FUTEXP, _, _, MUTEX, _, PRIVATE) will - be used to do the wakeup. Confers priority-inheritance behavior on - the waiter. */ -#define lll_futex_wait_requeue_pi(futexp, val, mutex, private) \ - lll_futex_timed_wait_requeue_pi (futexp, val, NULL, 0, mutex, private) - -/* Like lll_futex_wait_requeue_pi, but with a timeout. */ -#define lll_futex_timed_wait_requeue_pi(futexp, val, timeout, clockbit, \ - mutex, private) \ - -ENOSYS - -/* Like lll_futex_requeue, but pairs with lll_futex_wait_requeue_pi - and inherits priority from the waiter. */ -#define lll_futex_cmp_requeue_pi(futexp, nr_wake, nr_move, mutex, \ - val, private) \ - -ENOSYS - - -#endif /* lowlevellock-futex.h */ |