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141 lines
3.7 KiB
141 lines
3.7 KiB
// |
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// detail/impl/win_thread.ipp |
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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// |
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// Copyright (c) 2003-2011 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 BOOST_ASIO_DETAIL_IMPL_WIN_THREAD_IPP |
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#define BOOST_ASIO_DETAIL_IMPL_WIN_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 <boost/asio/detail/config.hpp> |
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#if defined(BOOST_WINDOWS) && !defined(UNDER_CE) |
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#include <process.h> |
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#include <boost/asio/detail/throw_error.hpp> |
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#include <boost/asio/detail/win_thread.hpp> |
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#include <boost/asio/error.hpp> |
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#include <boost/asio/detail/push_options.hpp> |
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namespace boost { |
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namespace asio { |
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namespace detail { |
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win_thread::~win_thread() |
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{ |
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::CloseHandle(thread_); |
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// The exit_event_ handle is deliberately allowed to leak here since it |
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// is an error for the owner of an internal thread not to join() it. |
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} |
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void win_thread::join() |
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{ |
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HANDLE handles[2] = { exit_event_, thread_ }; |
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::WaitForMultipleObjects(2, handles, FALSE, INFINITE); |
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::CloseHandle(exit_event_); |
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if (terminate_threads()) |
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{ |
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::TerminateThread(thread_, 0); |
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} |
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else |
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{ |
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::QueueUserAPC(apc_function, thread_, 0); |
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::WaitForSingleObject(thread_, INFINITE); |
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} |
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} |
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void win_thread::start_thread(func_base* arg, unsigned int stack_size) |
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{ |
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::HANDLE entry_event = 0; |
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arg->entry_event_ = entry_event = ::CreateEvent(0, true, false, 0); |
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if (!entry_event) |
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{ |
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DWORD last_error = ::GetLastError(); |
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delete arg; |
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boost::system::error_code ec(last_error, |
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boost::asio::error::get_system_category()); |
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boost::asio::detail::throw_error(ec, "thread.entry_event"); |
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} |
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arg->exit_event_ = exit_event_ = ::CreateEvent(0, true, false, 0); |
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if (!exit_event_) |
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{ |
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DWORD last_error = ::GetLastError(); |
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delete arg; |
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boost::system::error_code ec(last_error, |
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boost::asio::error::get_system_category()); |
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boost::asio::detail::throw_error(ec, "thread.exit_event"); |
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} |
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unsigned int thread_id = 0; |
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thread_ = reinterpret_cast<HANDLE>(::_beginthreadex(0, |
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stack_size, win_thread_function, arg, 0, &thread_id)); |
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if (!thread_) |
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{ |
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DWORD last_error = ::GetLastError(); |
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delete arg; |
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if (entry_event) |
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::CloseHandle(entry_event); |
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if (exit_event_) |
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::CloseHandle(exit_event_); |
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boost::system::error_code ec(last_error, |
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boost::asio::error::get_system_category()); |
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boost::asio::detail::throw_error(ec, "thread"); |
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} |
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if (entry_event) |
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{ |
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::WaitForSingleObject(entry_event, INFINITE); |
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::CloseHandle(entry_event); |
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} |
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} |
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unsigned int __stdcall win_thread_function(void* arg) |
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{ |
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win_thread::auto_func_base_ptr func = { |
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static_cast<win_thread::func_base*>(arg) }; |
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::SetEvent(func.ptr->entry_event_); |
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func.ptr->run(); |
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// Signal that the thread has finished its work, but rather than returning go |
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// to sleep to put the thread into a well known state. If the thread is being |
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// joined during global object destruction then it may be killed using |
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// TerminateThread (to avoid a deadlock in DllMain). Otherwise, the SleepEx |
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// call will be interrupted using QueueUserAPC and the thread will shut down |
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// cleanly. |
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HANDLE exit_event = func.ptr->exit_event_; |
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delete func.ptr; |
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func.ptr = 0; |
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::SetEvent(exit_event); |
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::SleepEx(INFINITE, TRUE); |
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return 0; |
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} |
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#if defined(WINVER) && (WINVER < 0x0500) |
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void __stdcall apc_function(ULONG) {} |
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#else |
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void __stdcall apc_function(ULONG_PTR) {} |
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#endif |
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} // namespace detail |
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} // namespace asio |
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} // namespace boost |
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#include <boost/asio/detail/pop_options.hpp> |
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#endif // defined(BOOST_WINDOWS) && !defined(UNDER_CE) |
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#endif // BOOST_ASIO_DETAIL_IMPL_WIN_THREAD_IPP
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