110 lines
2.2 KiB
C++
110 lines
2.2 KiB
C++
/* -*- C++ -*- */
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/****************************************************************************
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** Copyright (c) 2001-2014
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**
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** This file is part of the QuickFIX FIX Engine
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**
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** This file may be distributed under the terms of the quickfixengine.org
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** license as defined by quickfixengine.org and appearing in the file
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** LICENSE included in the packaging of this file.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** See http://www.quickfixengine.org/LICENSE for licensing information.
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**
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** Contact ask@quickfixengine.org if any conditions of this licensing are
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** not clear to you.
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**
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****************************************************************************/
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#ifndef ATOMIC_COUNT
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#define ATOMIC_COUNT
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#include "Mutex.h"
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namespace FIX
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{
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/// Atomic count class - consider using interlocked functions
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#ifdef ENABLE_BOOST_ATOMIC_COUNT
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#include <boost/smart_ptr/detail/atomic_count.hpp>
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typedef boost::detail::atomic_count atomic_count;
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#elif _MSC_VER
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//atomic counter based on interlocked functions for Win32
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class atomic_count
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{
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public:
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explicit atomic_count( long v ): m_counter( v )
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{
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}
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long operator++()
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{
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return ::InterlockedIncrement( &m_counter );
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}
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long operator--()
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{
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return ::InterlockedDecrement( &m_counter );
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}
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operator long() const
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{
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return static_cast<long const volatile &>( m_counter );
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}
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private:
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atomic_count( atomic_count const & );
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atomic_count & operator=( atomic_count const & );
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long volatile m_counter;
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};
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#else
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// general purpose atomic counter using mutexes
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class atomic_count
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{
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public:
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explicit atomic_count( long v ): m_counter( v )
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{
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}
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long operator++()
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{
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Locker _lock(m_mutex);
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return ++m_counter;
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}
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long operator--()
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{
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Locker _lock(m_mutex);
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return --m_counter;
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}
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operator long() const
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{
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return static_cast<long const volatile &>( m_counter );
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}
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private:
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atomic_count( atomic_count const & );
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atomic_count & operator=( atomic_count const & );
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Mutex m_mutex;
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long m_counter;
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};
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#endif
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}
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#endif
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