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+//
+// detail/impl/posix_thread.ipp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// 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 ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
+#define ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+
+#if defined(ASIO_HAS_PTHREADS)
+
+#include "asio/detail/posix_thread.hpp"
+#include "asio/detail/throw_error.hpp"
+#include "asio/error.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace detail {
+
+posix_thread::~posix_thread()
+{
+ if (!joined_)
+ ::pthread_detach(thread_);
+}
+
+void posix_thread::join()
+{
+ if (!joined_)
+ {
+ ::pthread_join(thread_, 0);
+ joined_ = true;
+ }
+}
+
+std::size_t posix_thread::hardware_concurrency()
+{
+#if defined(_SC_NPROCESSORS_ONLN)
+ long result = sysconf(_SC_NPROCESSORS_ONLN);
+ if (result > 0)
+ return result;
+#endif // defined(_SC_NPROCESSORS_ONLN)
+ return 0;
+}
+
+void posix_thread::start_thread(func_base* arg)
+{
+ int error = ::pthread_create(&thread_, 0,
+ asio_detail_posix_thread_function, arg);
+ if (error != 0)
+ {
+ delete arg;
+ asio::error_code ec(error,
+ asio::error::get_system_category());
+ asio::detail::throw_error(ec, "thread");
+ }
+}
+
+void* asio_detail_posix_thread_function(void* arg)
+{
+ posix_thread::auto_func_base_ptr func = {
+ static_cast<posix_thread::func_base*>(arg) };
+ func.ptr->run();
+ return 0;
+}
+
+} // namespace detail
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // defined(ASIO_HAS_PTHREADS)
+
+#endif // ASIO_DETAIL_IMPL_POSIX_THREAD_IPP