148 lines
3.0 KiB
C++
148 lines
3.0 KiB
C++
//
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// detail/win_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_WIN_THREAD_HPP
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#define ASIO_DETAIL_WIN_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_WINDOWS) \
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&& !defined(ASIO_WINDOWS_APP) \
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&& !defined(UNDER_CE)
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#include <cstddef>
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#include "asio/detail/noncopyable.hpp"
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#include "asio/detail/socket_types.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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ASIO_DECL unsigned int __stdcall win_thread_function(void* arg);
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#if defined(WINVER) && (WINVER < 0x0500)
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ASIO_DECL void __stdcall apc_function(ULONG data);
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#else
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ASIO_DECL void __stdcall apc_function(ULONG_PTR data);
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#endif
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template <typename T>
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class win_thread_base
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{
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public:
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static bool terminate_threads()
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{
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return ::InterlockedExchangeAdd(&terminate_threads_, 0) != 0;
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}
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static void set_terminate_threads(bool b)
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{
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::InterlockedExchange(&terminate_threads_, b ? 1 : 0);
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}
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private:
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static long terminate_threads_;
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};
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template <typename T>
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long win_thread_base<T>::terminate_threads_ = 0;
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class win_thread
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: private noncopyable,
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public win_thread_base<win_thread>
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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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win_thread(Function f, unsigned int stack_size = 0)
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: thread_(0),
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exit_event_(0)
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{
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start_thread(new func<Function>(f), stack_size);
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}
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// Destructor.
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ASIO_DECL ~win_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 ASIO_DECL unsigned int __stdcall win_thread_function(void* arg);
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#if defined(WINVER) && (WINVER < 0x0500)
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friend ASIO_DECL void __stdcall apc_function(ULONG);
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#else
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friend ASIO_DECL void __stdcall apc_function(ULONG_PTR);
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#endif
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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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::HANDLE entry_event_;
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::HANDLE exit_event_;
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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, unsigned int stack_size);
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::HANDLE thread_;
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::HANDLE exit_event_;
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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/win_thread.ipp"
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#endif // defined(ASIO_HEADER_ONLY)
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#endif // defined(ASIO_WINDOWS)
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// && !defined(ASIO_WINDOWS_APP)
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// && !defined(UNDER_CE)
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#endif // ASIO_DETAIL_WIN_THREAD_HPP
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