Chris@16: #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
Chris@16: #define BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
Chris@16: 
Chris@16: // MS compatible compilers support #pragma once
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: //
Chris@16: //  boost/detail/spinlock_pool.hpp
Chris@16: //
Chris@16: //  Copyright (c) 2008 Peter Dimov
Chris@16: //
Chris@16: //  Distributed under the Boost Software License, Version 1.0.
Chris@16: //  See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: //  spinlock_pool<0> is reserved for atomic<>, when/if it arrives
Chris@16: //  spinlock_pool<1> is reserved for shared_ptr reference counts
Chris@16: //  spinlock_pool<2> is reserved for shared_ptr atomic access
Chris@16: //
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: #include <boost/smart_ptr/detail/spinlock.hpp>
Chris@16: #include <cstddef>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16: 
Chris@101: template< int M > class spinlock_pool
Chris@16: {
Chris@16: private:
Chris@16: 
Chris@16:     static spinlock pool_[ 41 ];
Chris@16: 
Chris@16: public:
Chris@16: 
Chris@16:     static spinlock & spinlock_for( void const * pv )
Chris@16:     {
Chris@16: #if defined(__VMS) && __INITIAL_POINTER_SIZE == 64  
Chris@16:         std::size_t i = reinterpret_cast< unsigned long long >( pv ) % 41;
Chris@16: #else  
Chris@16:         std::size_t i = reinterpret_cast< std::size_t >( pv ) % 41;
Chris@16: #endif  
Chris@16:         return pool_[ i ];
Chris@16:     }
Chris@16: 
Chris@16:     class scoped_lock
Chris@16:     {
Chris@16:     private:
Chris@16: 
Chris@16:         spinlock & sp_;
Chris@16: 
Chris@16:         scoped_lock( scoped_lock const & );
Chris@16:         scoped_lock & operator=( scoped_lock const & );
Chris@16: 
Chris@16:     public:
Chris@16: 
Chris@16:         explicit scoped_lock( void const * pv ): sp_( spinlock_for( pv ) )
Chris@16:         {
Chris@16:             sp_.lock();
Chris@16:         }
Chris@16: 
Chris@16:         ~scoped_lock()
Chris@16:         {
Chris@16:             sp_.unlock();
Chris@16:         }
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@101: template< int M > spinlock spinlock_pool< M >::pool_[ 41 ] =
Chris@16: {
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, 
Chris@16:     BOOST_DETAIL_SPINLOCK_INIT
Chris@16: };
Chris@16: 
Chris@16: } // namespace detail
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED