diff options
Diffstat (limited to 'sysdeps/nacl/lll_timedlock_wait.c')
-rw-r--r-- | sysdeps/nacl/lll_timedlock_wait.c | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/sysdeps/nacl/lll_timedlock_wait.c b/sysdeps/nacl/lll_timedlock_wait.c deleted file mode 100644 index d9f177291f..0000000000 --- a/sysdeps/nacl/lll_timedlock_wait.c +++ /dev/null @@ -1,53 +0,0 @@ -/* Timed low level locking for pthread library. NaCl version. - Copyright (C) 2015-2016 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/>. */ - -#include <assert.h> -#include <atomic.h> -#include <errno.h> -#include <lowlevellock.h> -#include <sys/time.h> - - -/* This behaves the same as the generic version in nptl/. It's simpler - because it doesn't need to convert an absolute timeout to a relative - one (and back again in the lll_futex_timed_wait macro). */ - -int -__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) -{ - /* Reject invalid timeouts. */ - if (__glibc_unlikely (abstime->tv_nsec < 0) - || __glibc_unlikely (abstime->tv_nsec >= 1000000000)) - return EINVAL; - - /* Try locking. */ - while (atomic_exchange_acq (futex, 2) != 0) - { - /* If *futex == 2, wait until woken or timeout. */ - int err = __nacl_irt_futex.futex_wait_abs ((volatile int *) futex, 2, - abstime); - if (err != 0) - { - if (__glibc_likely (err == ETIMEDOUT)) - return err; - assert (err == EAGAIN); - } - } - - return 0; -} |