request_queue_impl_worker.h

/***************************************************************************
 * include/stxxl/bits/io/request_queue_impl_worker.h
 *
 * Part of the STXXL. See http://stxxl.sourceforge.net
 *
 * Copyright (C) 2002 Roman Dementiev <[email protected]>
 * Copyright (C) 2008, 2009 Andreas Beckmann <[email protected]>
 * Copyright (C) 2009 Johannes Singler <[email protected]>
 *
 * 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 STXXL_IO_REQUEST_QUEUE_IMPL_WORKER_HEADER
#define STXXL_IO_REQUEST_QUEUE_IMPL_WORKER_HEADER

#ifdef STXXL_BOOST_CONFIG
 #include <boost/config.hpp>
#endif

#ifdef STXXL_BOOST_THREADS // Use Portable Boost threads
 #include <boost/thread/thread.hpp>
#else
 #include <pthread.h>
#endif

#include <stxxl/bits/io/request_queue.h>
#include <stxxl/bits/common/semaphore.h>
#include <stxxl/bits/common/state.h>


__STXXL_BEGIN_NAMESPACE


class request_queue_impl_worker : public request_queue
{
protected:
 enum thread_state { NOT_RUNNING, RUNNING, TERMINATING, TERMINATE = TERMINATING };

#ifdef STXXL_BOOST_THREADS
 typedef boost::thread * thread_type;
#else
 typedef pthread_t thread_type;
#endif

protected:
 void start_thread(void * (*worker)(void *), void * arg, thread_type & t, state<thread_state> & s);
 void stop_thread(thread_type & t, state<thread_state> & s, semaphore & sem);
};


__STXXL_END_NAMESPACE

#endif // !STXXL_IO_REQUEST_QUEUE_IMPL_WORKER_HEADER
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