85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
//
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// detail/impl/posix_thread.ipp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
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#define ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#if defined(ASIO_HAS_PTHREADS)
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#include "asio/detail/posix_thread.hpp"
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#include "asio/detail/throw_error.hpp"
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#include "asio/error.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace detail {
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posix_thread::~posix_thread()
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{
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if (!joined_)
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::pthread_detach(thread_);
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}
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void posix_thread::join()
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{
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if (!joined_)
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{
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::pthread_join(thread_, 0);
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joined_ = true;
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}
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}
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std::size_t posix_thread::hardware_concurrency()
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{
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#if defined(_SC_NPROCESSORS_ONLN)
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long result = sysconf(_SC_NPROCESSORS_ONLN);
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if (result > 0)
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return result;
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#endif // defined(_SC_NPROCESSORS_ONLN)
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return 0;
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}
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void posix_thread::start_thread(func_base* arg)
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{
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int error = ::pthread_create(&thread_, 0,
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asio_detail_posix_thread_function, arg);
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if (error != 0)
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{
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delete arg;
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asio::error_code ec(error,
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asio::error::get_system_category());
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asio::detail::throw_error(ec, "thread");
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}
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}
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void* asio_detail_posix_thread_function(void* arg)
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{
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posix_thread::auto_func_base_ptr func = {
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static_cast<posix_thread::func_base*>(arg) };
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func.ptr->run();
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return 0;
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}
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} // namespace detail
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // defined(ASIO_HAS_PTHREADS)
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#endif // ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
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