110 lines
2.0 KiB
C++
110 lines
2.0 KiB
C++
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//
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// detail/posix_thread.hpp
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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_POSIX_THREAD_HPP
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#define ASIO_DETAIL_POSIX_THREAD_HPP
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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 <cstddef>
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#include <pthread.h>
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#include "asio/detail/noncopyable.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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extern "C"
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{
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ASIO_DECL void* asio_detail_posix_thread_function(void* arg);
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}
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class posix_thread
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: private noncopyable
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{
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public:
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// Constructor.
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template <typename Function>
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posix_thread(Function f, unsigned int = 0)
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: joined_(false)
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{
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start_thread(new func<Function>(f));
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}
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// Destructor.
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ASIO_DECL ~posix_thread();
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// Wait for the thread to exit.
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ASIO_DECL void join();
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// Get number of CPUs.
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ASIO_DECL static std::size_t hardware_concurrency();
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private:
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friend void* asio_detail_posix_thread_function(void* arg);
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class func_base
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{
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public:
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virtual ~func_base() {}
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virtual void run() = 0;
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};
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struct auto_func_base_ptr
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{
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func_base* ptr;
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~auto_func_base_ptr() { delete ptr; }
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};
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template <typename Function>
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class func
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: public func_base
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{
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public:
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func(Function f)
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: f_(f)
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{
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}
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virtual void run()
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{
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f_();
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}
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private:
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Function f_;
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};
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ASIO_DECL void start_thread(func_base* arg);
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::pthread_t thread_;
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bool joined_;
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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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#if defined(ASIO_HEADER_ONLY)
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# include "asio/detail/impl/posix_thread.ipp"
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#endif // defined(ASIO_HEADER_ONLY)
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#endif // defined(ASIO_HAS_PTHREADS)
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#endif // ASIO_DETAIL_POSIX_THREAD_HPP
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