1 files changed, 111 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/asio/detail/posix_thread.hpp b/src/third_party/boost-1.69.0/boost/asio/detail/posix_thread.hpp
new file mode 100644
index 00000000000..b2821f5356a
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+++ b/src/third_party/boost-1.69.0/boost/asio/detail/posix_thread.hpp
@@ -0,0 +1,111 @@
+//
+// detail/posix_thread.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// 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)
+//
+
+#ifndef BOOST_ASIO_DETAIL_POSIX_THREAD_HPP
+#define BOOST_ASIO_DETAIL_POSIX_THREAD_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+
+#if defined(BOOST_ASIO_HAS_PTHREADS)
+
+#include <cstddef>
+#include <pthread.h>
+#include <boost/asio/detail/noncopyable.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+extern "C"
+{
+  BOOST_ASIO_DECL void* boost_asio_detail_posix_thread_function(void* arg);
+}
+
+class posix_thread
+  : private noncopyable
+{
+public:
+  // Constructor.
+  template <typename Function>
+  posix_thread(Function f, unsigned int = 0)
+    : joined_(false)
+  {
+    start_thread(new func<Function>(f));
+  }
+
+  // Destructor.
+  BOOST_ASIO_DECL ~posix_thread();
+
+  // Wait for the thread to exit.
+  BOOST_ASIO_DECL void join();
+
+  // Get number of CPUs.
+  BOOST_ASIO_DECL static std::size_t hardware_concurrency();
+
+private:
+  friend void* boost_asio_detail_posix_thread_function(void* arg);
+
+  class func_base
+  {
+  public:
+    virtual ~func_base() {}
+    virtual void run() = 0;
+  };
+
+  struct auto_func_base_ptr
+  {
+    func_base* ptr;
+    ~auto_func_base_ptr() { delete ptr; }
+  };
+
+  template <typename Function>
+  class func
+    : public func_base
+  {
+  public:
+    func(Function f)
+      : f_(f)
+    {
+    }
+
+    virtual void run()
+    {
+      f_();
+    }
+
+  private:
+    Function f_;
+  };
+
+  BOOST_ASIO_DECL void start_thread(func_base* arg);
+
+  ::pthread_t thread_;
+  bool joined_;
+};
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#if defined(BOOST_ASIO_HEADER_ONLY)
+# include <boost/asio/detail/impl/posix_thread.ipp>
+#endif // defined(BOOST_ASIO_HEADER_ONLY)
+
+#endif // defined(BOOST_ASIO_HAS_PTHREADS)
+
+#endif // BOOST_ASIO_DETAIL_POSIX_THREAD_HPP