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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-06-12 09:41:23 (GMT)
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-06-12 09:43:33 (GMT)
commit0f541b5c48b7b0df80e2aaa8fdbf653a8b8bcd03 (patch)
tree85edfa6367eff0436c9a5c0410d895f8d7b1d0ce
parenta75ca05cf77652bebb01edfb0bc48cd78eab95dc (diff)
xtensa: use generic lowlevellock
Simplify and use generic lowlevellock. Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org> Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c
deleted file mode 100644
index 756f39f..0000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/* low level locking for pthread library. Generic futex-using version.
- Copyright (C) 2003-2013 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