--- /dev/null
+#ifndef BOOST_THREAD_DETAIL_THREAD_SAFETY_HPP
+#define BOOST_THREAD_DETAIL_THREAD_SAFETY_HPP
+
+#if defined(__GNUC__) && !defined(__GXX_EXPERIMENTAL_CXX0X__)
+//
+// This is horrible, but it seems to be the only we can shut up the
+// "anonymous variadic macros were introduced in C99 [-Wvariadic-macros]"
+// warning that get spewed out otherwise in non-C++11 mode.
+//
+#pragma GCC system_header
+#endif
+
+// See https://clang.llvm.org/docs/ThreadSafetyAnalysis.html
+
+// Un-comment to enable Thread Safety Analysis
+//#define BOOST_THREAD_ENABLE_THREAD_SAFETY_ANALYSIS
+
+// Enable thread safety attributes only with clang.
+// The attributes can be safely erased when compiling with other compilers.
+#if defined (BOOST_THREAD_ENABLE_THREAD_SAFETY_ANALYSIS) && defined(__clang__) && (!defined(SWIG))
+#define BOOST_THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x))
+#else
+#define BOOST_THREAD_ANNOTATION_ATTRIBUTE__(x) // no-op
+#endif
+
+#define BOOST_THREAD_CAPABILITY(x) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(capability(x))
+
+#define BOOST_THREAD_SCOPED_CAPABILITY \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+#define BOOST_THREAD_GUARDED_BY(x) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
+
+#define BOOST_THREAD_PT_GUARDED_BY(x) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
+
+#define BOOST_THREAD_ACQUIRED_BEFORE(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__))
+
+#define BOOST_THREAD_ACQUIRED_AFTER(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__))
+
+#define BOOST_THREAD_REQUIRES(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(requires_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_REQUIRES_SHARED(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(requires_shared_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_ACQUIRE(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(acquire_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_ACQUIRE_SHARED(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(acquire_shared_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_RELEASE(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(release_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_RELEASE_SHARED(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(release_shared_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_TRY_ACQUIRE(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_TRY_ACQUIRE_SHARED(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_shared_capability(__VA_ARGS__))
+
+#define BOOST_THREAD_EXCLUDES(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+
+#define BOOST_THREAD_ASSERT_CAPABILITY(x) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(assert_capability(x))
+
+#define BOOST_THREAD_ASSERT_SHARED_CAPABILITY(x) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_capability(x))
+
+#define BOOST_THREAD_RETURN_CAPABILITY(x) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+#define BOOST_THREAD_NO_THREAD_SAFETY_ANALYSIS \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+
+#if defined(__clang__) && (!defined(SWIG)) && defined(__FreeBSD__)
+#if __has_attribute(no_thread_safety_analysis)
+#define BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS __attribute__((no_thread_safety_analysis))
+#else
+#define BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+#endif
+#else
+#define BOOST_THREAD_DISABLE_THREAD_SAFETY_ANALYSIS
+#endif
+
+#ifdef USE_LOCK_STYLE_THREAD_SAFETY_ATTRIBUTES
+// The original version of thread safety analysis the following attribute
+// definitions. These use a lock-based terminology. They are still in use
+// by existing thread safety code, and will continue to be supported.
+
+// Deprecated.
+#define BOOST_THREAD_PT_GUARDED_VAR \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_var)
+
+// Deprecated.
+#define BOOST_THREAD_GUARDED_VAR \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(guarded_var)
+
+// Replaced by REQUIRES
+#define BOOST_THREAD_EXCLUSIVE_LOCKS_REQUIRED(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
+
+// Replaced by REQUIRES_SHARED
+#define BOOST_THREAD_SHARED_LOCKS_REQUIRED(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
+
+// Replaced by CAPABILITY
+#define BOOST_THREAD_LOCKABLE \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(lockable)
+
+// Replaced by SCOPED_CAPABILITY
+#define BOOST_THREAD_SCOPED_LOCKABLE \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+// Replaced by ACQUIRE
+#define BOOST_THREAD_EXCLUSIVE_LOCK_FUNCTION(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
+
+// Replaced by ACQUIRE_SHARED
+#define BOOST_THREAD_SHARED_LOCK_FUNCTION(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
+
+// Replaced by RELEASE and RELEASE_SHARED
+#define BOOST_THREAD_UNLOCK_FUNCTION(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
+
+// Replaced by TRY_ACQUIRE
+#define BOOST_THREAD_EXCLUSIVE_TRYLOCK_FUNCTION(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
+
+// Replaced by TRY_ACQUIRE_SHARED
+#define BOOST_THREAD_SHARED_TRYLOCK_FUNCTION(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
+
+// Replaced by ASSERT_CAPABILITY
+#define BOOST_THREAD_ASSERT_EXCLUSIVE_LOCK(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(assert_exclusive_lock(__VA_ARGS__))
+
+// Replaced by ASSERT_SHARED_CAPABILITY
+#define BOOST_THREAD_ASSERT_SHARED_LOCK(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_lock(__VA_ARGS__))
+
+// Replaced by EXCLUDE_CAPABILITY.
+#define BOOST_THREAD_LOCKS_EXCLUDED(...) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+
+// Replaced by RETURN_CAPABILITY
+#define BOOST_THREAD_LOCK_RETURNED(x) \
+ BOOST_THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+#endif // USE_LOCK_STYLE_THREAD_SAFETY_ATTRIBUTES
+
+#endif // BOOST_THREAD_DETAIL_THREAD_SAFETY_HPP