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/***************************************************************************
* lib/io/request_queue_impl_worker.cpp
*
* Part of the STXXL. See http://stxxl.sourceforge.net
*
* Copyright (C) 2002-2005 Roman Dementiev <dementiev@mpi-sb.mpg.de>
* Copyright (C) 2008, 2009 Andreas Beckmann <beckmann@cs.uni-frankfurt.de>
* Copyright (C) 2009 Johannes Singler <singler@ira.uka.de>
* Copyright (C) 2013 Timo Bingmann <tb@panthema.net>
*
* 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)
**************************************************************************/
#include <stxxl/bits/common/error_handling.h>
#include <stxxl/bits/common/semaphore.h>
#include <stxxl/bits/common/state.h>
#include <stxxl/bits/config.h>
#include <stxxl/bits/io/request_queue_impl_worker.h>
#include <stxxl/bits/namespace.h>
#include <cassert>
#include <cstddef>
#if STXXL_BOOST_THREADS
#include <boost/bind.hpp>
#endif
#if STXXL_STD_THREADS && STXXL_MSVC >= 1700
#include <windows.h>
#endif
STXXL_BEGIN_NAMESPACE
void request_queue_impl_worker::start_thread(void* (* worker)(void*), void* arg, thread_type& t, state<thread_state>& s)
{
assert(s() == NOT_RUNNING);
#if STXXL_STD_THREADS
t = new std::thread(worker, arg);
#elif STXXL_BOOST_THREADS
t = new boost::thread(boost::bind(worker, arg));
#else
STXXL_CHECK_PTHREAD_CALL(pthread_create(&t, NULL, worker, arg));
#endif
s.set_to(RUNNING);
}
void request_queue_impl_worker::stop_thread(thread_type& t, state<thread_state>& s, semaphore& sem)
{
assert(s() == RUNNING);
s.set_to(TERMINATING);
sem++;
#if STXXL_STD_THREADS
#if STXXL_MSVC >= 1700
// In the Visual C++ Runtime 2012 and 2013, there is a deadlock bug, which
// occurs when threads are joined after main() exits. Apparently, Microsoft
// thinks this is not a big issue. It has not been fixed in VC++RT 2013.
// https://connect.microsoft.com/VisualStudio/feedback/details/747145
//
// All STXXL threads are created by singletons, which are global variables
// that are deleted after main() exits. The fix applied here it to use
// std::thread::native_handle() and access the WINAPI to terminate the
// thread directly (after it finished handling its i/o requests).
WaitForSingleObject(t->native_handle(), INFINITE);
CloseHandle(t->native_handle());
#else
t->join();
delete t;
#endif
t = NULL;
#elif STXXL_BOOST_THREADS
t->join();
delete t;
t = NULL;
#else
STXXL_CHECK_PTHREAD_CALL(pthread_join(t, NULL));
#endif
assert(s() == TERMINATED);
s.set_to(NOT_RUNNING);
}
STXXL_END_NAMESPACE
// vim: et:ts=4:sw=4
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