Update libcxx to llvmorg-17.0.6

Update libcxx to llvmorg-17.0.6
c871ef572c71b4fef22d4a9e65bcebc57e625aea

1 files changed, 53 insertions, 0 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/__mutex/lock_guard.h b/contrib/libs/cxxsupp/libcxx/include/__mutex/lock_guard.h
new file mode 100644
index 0000000000..c075512fb9
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__mutex/lock_guard.h
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MUTEX_LOCK_GUARD_H
+#define _LIBCPP___MUTEX_LOCK_GUARD_H
+
+#include <__config>
+#include <__mutex/tag_types.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Mutex>
+class _LIBCPP_TEMPLATE_VIS _LIBCPP_THREAD_SAFETY_ANNOTATION(scoped_lockable) lock_guard {
+public:
+  typedef _Mutex mutex_type;
+
+private:
+  mutex_type& __m_;
+
+public:
+  _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI explicit lock_guard(mutex_type& __m)
+      _LIBCPP_THREAD_SAFETY_ANNOTATION(acquire_capability(__m))
+      : __m_(__m) {
+    __m_.lock();
+  }
+
+  _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI lock_guard(mutex_type& __m, adopt_lock_t)
+      _LIBCPP_THREAD_SAFETY_ANNOTATION(requires_capability(__m))
+      : __m_(__m) {}
+  _LIBCPP_HIDE_FROM_ABI ~lock_guard() _LIBCPP_THREAD_SAFETY_ANNOTATION(release_capability()) { __m_.unlock(); }
+
+private:
+  lock_guard(lock_guard const&)            = delete;
+  lock_guard& operator=(lock_guard const&) = delete;
+};
+_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(lock_guard);
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_HAS_NO_THREADS
+
+#endif // _LIBCPP___MUTEX_LOCK_GUARD_H