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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/atomicity.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/atomicity.h
new file mode 100644
index 0000000..c603063
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+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/atomicity.h
@@ -0,0 +1,116 @@
+// Support for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010, 2011, 2012
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library 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.
+
+// This 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 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
+// .
+
+/** @file ext/atomicity.h
+ * This file is a GNU extension to the Standard C++ Library.
+ */
+
+#ifndef _GLIBCXX_ATOMICITY_H
+#define _GLIBCXX_ATOMICITY_H 1
+
+#include
+#include
+#include
+
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ // Functions for portable atomic access.
+ // To abstract locking primitives across all thread policies, use:
+ // __exchange_and_add_dispatch
+ // __atomic_add_dispatch
+#ifdef _GLIBCXX_ATOMIC_BUILTINS
+ static inline _Atomic_word
+ __exchange_and_add(volatile _Atomic_word* __mem, int __val)
+ { return __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); }
+
+ static inline void
+ __atomic_add(volatile _Atomic_word* __mem, int __val)
+ { __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); }
+#else
+ _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add(volatile _Atomic_word*, int) throw ();
+
+ void
+ __attribute__ ((__unused__))
+ __atomic_add(volatile _Atomic_word*, int) throw ();
+#endif
+
+ static inline _Atomic_word
+ __exchange_and_add_single(_Atomic_word* __mem, int __val)
+ {
+ _Atomic_word __result = *__mem;
+ *__mem += __val;
+ return __result;
+ }
+
+ static inline void
+ __atomic_add_single(_Atomic_word* __mem, int __val)
+ { *__mem += __val; }
+
+ static inline _Atomic_word
+ __attribute__ ((__unused__))
+ __exchange_and_add_dispatch(_Atomic_word* __mem, int __val)
+ {
+#ifdef __GTHREADS
+ if (__gthread_active_p())
+ return __exchange_and_add(__mem, __val);
+ else
+ return __exchange_and_add_single(__mem, __val);
+#else
+ return __exchange_and_add_single(__mem, __val);
+#endif
+ }
+
+ static inline void
+ __attribute__ ((__unused__))
+ __atomic_add_dispatch(_Atomic_word* __mem, int __val)
+ {
+#ifdef __GTHREADS
+ if (__gthread_active_p())
+ __atomic_add(__mem, __val);
+ else
+ __atomic_add_single(__mem, __val);
+#else
+ __atomic_add_single(__mem, __val);
+#endif
+ }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+// Even if the CPU doesn't need a memory barrier, we need to ensure
+// that the compiler doesn't reorder memory accesses across the
+// barriers.
+#ifndef _GLIBCXX_READ_MEM_BARRIER
+#define _GLIBCXX_READ_MEM_BARRIER __asm __volatile ("":::"memory")
+#endif
+#ifndef _GLIBCXX_WRITE_MEM_BARRIER
+#define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("":::"memory")
+#endif
+
+#endif