| // |
| // detail/posix_thread.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2016 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_POSIX_THREAD_HPP |
| #define ASIO_DETAIL_POSIX_THREAD_HPP |
| |
| #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 <cstddef> |
| #include <pthread.h> |
| #include "asio/detail/noncopyable.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace detail { |
| |
| extern "C" |
| { |
| ASIO_DECL void* 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. |
| ASIO_DECL ~posix_thread(); |
| |
| // Wait for the thread to exit. |
| ASIO_DECL void join(); |
| |
| // Get number of CPUs. |
| ASIO_DECL static std::size_t hardware_concurrency(); |
| |
| private: |
| friend void* 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_; |
| }; |
| |
| ASIO_DECL void start_thread(func_base* arg); |
| |
| ::pthread_t thread_; |
| bool joined_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #if defined(ASIO_HEADER_ONLY) |
| # include "asio/detail/impl/posix_thread.ipp" |
| #endif // defined(ASIO_HEADER_ONLY) |
| |
| #endif // defined(ASIO_HAS_PTHREADS) |
| |
| #endif // ASIO_DETAIL_POSIX_THREAD_HPP |