整理

include/boost/smart_ptr/detail/lightweight_thread.hpp

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+#ifndef BOOST_SMART_PTR_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//  boost/detail/lightweight_thread.hpp
+//
+//  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
+//  Copyright (c) 2008, 2018 Peter Dimov
+//
+//  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
+//
+//
+//  typedef /*...*/ lw_thread_t; // as pthread_t
+//  template<class F> int lw_thread_create( lw_thread_t & th, F f );
+//  void lw_thread_join( lw_thread_t th );
+
+#include <thread>
+#include <exception>
+
+namespace boost
+{
+namespace detail
+{
+
+using lw_thread_t = std::thread*;
+
+template<class F> int lw_thread_create( lw_thread_t& th, F f )
+{
+    try
+    {
+        th = new std::thread( f );
+        return 0;
+    }
+    catch( std::exception const& )
+    {
+        return -1;
+    }
+}
+
+void lw_thread_join( lw_thread_t th )
+{
+    th->join();
+    delete th;
+}
+
+} // namespace detail
+} // namespace boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED