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