diff options
Diffstat (limited to 'sysdeps/unix/sysv')
-rw-r--r-- | sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c b/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c deleted file mode 100644 index 9603d7b328..0000000000 --- a/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c +++ /dev/null @@ -1,132 +0,0 @@ -/* low level locking for pthread library. Generic futex-using version. - Copyright (C) 2003-2014 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 <errno.h> -#include <sysdep.h> -#include <lowlevellock.h> -#include <sys/time.h> - -void -__lll_lock_wait_private (int *futex) -{ - do - { - int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); - if (oldval != 0) - lll_futex_wait (futex, 2, LLL_PRIVATE); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); -} - - -/* These functions don't get included in libc.so */ -#ifdef IS_IN_libpthread -void -__lll_lock_wait (int *futex, int private) -{ - do - { - int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); - if (oldval != 0) - lll_futex_wait (futex, 2, private); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); -} - - -int -__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) -{ - struct timespec rt; - - /* Reject invalid timeouts. */ - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Upgrade the lock. */ - if (atomic_exchange_acq (futex, 2) == 0) - return 0; - - do - { - struct timeval tv; - - /* Get the current time. */ - (void) __gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - // XYZ: Lost the lock to check whether it was private. - lll_futex_timed_wait (futex, 2, &rt, private); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); - - return 0; -} - - -int -__lll_timedwait_tid (int *tidp, const struct timespec *abstime) -{ - int tid; - - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Repeat until thread terminated. */ - while ((tid = *tidp) != 0) - { - struct timeval tv; - struct timespec rt; - - /* Get the current time. */ - (void) __gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - /* Wait until thread terminates. */ - // XYZ: Lost the lock to check whether it was private. - if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT) - return ETIMEDOUT; - } - - return 0; -} -#endif |