update ceph source to reef 18.1.2

[ceph.git] / ceph / src / boost / boost / leaf / config / tls_cpp11.hpp

diff --git a/ceph/src/boost/boost/leaf/config/tls_cpp11.hpp b/ceph/src/boost/boost/leaf/config/tls_cpp11.hpp
new file mode 100644 (file)
index 0000000..dbc6711
--- /dev/null
+++ b/ceph/src/boost/boost/leaf/config/tls_cpp11.hpp
@@ -0,0 +1,85 @@
+#ifndef BOOST_LEAF_CONFIG_TLS_CPP11_HPP_INCLUDED
+#define BOOST_LEAF_CONFIG_TLS_CPP11_HPP_INCLUDED
+
+// Copyright 2018-2022 Emil Dotchevski and Reverge Studios, Inc.
+
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// LEAF requires thread local storage support for pointers and for uin32_t values.
+
+// This header implements thread local storage for pointers and for uint32_t
+// values using the C++11 built-in thread_local storage class specifier.
+
+#include <cstdint>
+#include <atomic>
+
+namespace boost { namespace leaf {
+
+namespace leaf_detail
+{
+    using atomic_unsigned_int = std::atomic<unsigned int>;
+}
+
+namespace tls
+{
+    template <class T>
+    struct BOOST_LEAF_SYMBOL_VISIBLE ptr
+    {
+        static thread_local T * p;
+    };
+
+    template <class T>
+    thread_local T * ptr<T>::p;
+
+    template <class T>
+    T * read_ptr() noexcept
+    {
+        return ptr<T>::p;
+    }
+
+    template <class T>
+    void write_ptr( T * p ) noexcept
+    {
+        ptr<T>::p = p;
+    }
+
+    ////////////////////////////////////////
+
+    template <class Tag>
+    struct BOOST_LEAF_SYMBOL_VISIBLE tagged_uint32
+    {
+        static thread_local std::uint32_t x;
+    };
+
+    template <class Tag>
+    thread_local std::uint32_t tagged_uint32<Tag>::x;
+
+    template <class Tag>
+    std::uint32_t read_uint32() noexcept
+    {
+        return tagged_uint32<Tag>::x;
+    }
+
+    template <class Tag>
+    void write_uint32( std::uint32_t x ) noexcept
+    {
+        tagged_uint32<Tag>::x = x;
+    }
+
+    template <class Tag>
+    void uint32_increment() noexcept
+    {
+        ++tagged_uint32<Tag>::x;
+    }
+
+    template <class Tag>
+    void uint32_decrement() noexcept
+    {
+        --tagged_uint32<Tag>::x;
+    }
+}
+
+} }
+
+#endif