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-rw-r--r--gcc-4.6/libgomp/config/linux/wait.h65
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diff --git a/gcc-4.6/libgomp/config/linux/wait.h b/gcc-4.6/libgomp/config/linux/wait.h
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--- a/gcc-4.6/libgomp/config/linux/wait.h
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-/* Copyright (C) 2008, 2009, 2011 Free Software Foundation, Inc.
- Contributed by Jakub Jelinek <jakub@redhat.com>.
-
- This file is part of the GNU OpenMP Library (libgomp).
-
- Libgomp is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3, or (at your option)
- any later version.
-
- Libgomp 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 General Public License for
- more details.
-
- Under Section 7 of GPL version 3, you are granted additional
- permissions described in the GCC Runtime Library Exception, version
- 3.1, as published by the Free Software Foundation.
-
- You should have received a copy of the GNU General Public License and
- a copy of the GCC Runtime Library Exception along with this program;
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
-
-/* This is a Linux specific implementation of a mutex synchronization
- mechanism for libgomp. This type is private to the library. This
- implementation uses atomic instructions and the futex syscall. */
-
-#ifndef GOMP_WAIT_H
-#define GOMP_WAIT_H 1
-
-#include "libgomp.h"
-#include <errno.h>
-
-#define FUTEX_WAIT 0
-#define FUTEX_WAKE 1
-#define FUTEX_PRIVATE_FLAG 128L
-
-#ifdef HAVE_ATTRIBUTE_VISIBILITY
-# pragma GCC visibility push(hidden)
-#endif
-
-extern long int gomp_futex_wait, gomp_futex_wake;
-
-#include <futex.h>
-
-static inline void do_wait (int *addr, int val)
-{
- unsigned long long i, count = gomp_spin_count_var;
-
- if (__builtin_expect (gomp_managed_threads > gomp_available_cpus, 0))
- count = gomp_throttled_spin_count_var;
- for (i = 0; i < count; i++)
- if (__builtin_expect (*addr != val, 0))
- return;
- else
- cpu_relax ();
- futex_wait (addr, val);
-}
-
-#ifdef HAVE_ATTRIBUTE_VISIBILITY
-# pragma GCC visibility pop
-#endif
-
-#endif /* GOMP_WAIT_H */