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Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/lowlevellock.c')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/lowlevellock.c124
1 files changed, 0 insertions, 124 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/lowlevellock.c b/nptl/sysdeps/unix/sysv/linux/lowlevellock.c
deleted file mode 100644
index e198af7e8d..0000000000
--- a/nptl/sysdeps/unix/sysv/linux/lowlevellock.c
+++ /dev/null
@@ -1,124 +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.
- Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
-
- 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>
-#include <atomic.h>
-
-void
-__lll_lock_wait_private (int *futex)
-{
- if (*futex == 2)
- lll_futex_wait (futex, 2, LLL_PRIVATE);
-
- while (atomic_exchange_acq (futex, 2) != 0)
- lll_futex_wait (futex, 2, LLL_PRIVATE);
-}
-
-
-/* These functions don't get included in libc.so */
-#ifdef IS_IN_libpthread
-void
-__lll_lock_wait (int *futex, int private)
-{
- if (*futex == 2)
- lll_futex_wait (futex, 2, private);
-
- while (atomic_exchange_acq (futex, 2) != 0)
- lll_futex_wait (futex, 2, private);
-}
-
-
-int
-__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private)
-{
- /* Reject invalid timeouts. */
- if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
- return EINVAL;
-
- /* Try locking. */
- while (atomic_exchange_acq (futex, 2) != 0)
- {
- struct timeval tv;
-
- /* Get the current time. */
- (void) __gettimeofday (&tv, NULL);
-
- /* Compute relative timeout. */
- struct timespec rt;
- 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;
- }
-
- if (rt.tv_sec < 0)
- return ETIMEDOUT;
-
- /* Wait. */
- lll_futex_timed_wait (futex, 2, &rt, private);
- }
-
- 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. The kernel so far does not use
- the private futex operations for this. */
- if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT)
- return ETIMEDOUT;
- }
-
- return 0;
-}
-#endif