You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
2.9 KiB
92 lines
2.9 KiB
#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
|
|
#define BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
|
|
|
|
// MS compatible compilers support #pragma once
|
|
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
|
|
# pragma once
|
|
#endif
|
|
|
|
//
|
|
// boost/detail/spinlock_pool.hpp
|
|
//
|
|
// Copyright (c) 2008 Peter Dimov
|
|
//
|
|
// 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)
|
|
//
|
|
// spinlock_pool<0> is reserved for atomic<>, when/if it arrives
|
|
// spinlock_pool<1> is reserved for shared_ptr reference counts
|
|
// spinlock_pool<2> is reserved for shared_ptr atomic access
|
|
//
|
|
|
|
#include <boost/config.hpp>
|
|
#include <boost/smart_ptr/detail/spinlock.hpp>
|
|
#include <cstddef>
|
|
|
|
namespace boost
|
|
{
|
|
|
|
namespace detail
|
|
{
|
|
|
|
template< int M > class spinlock_pool
|
|
{
|
|
private:
|
|
|
|
static spinlock pool_[ 41 ];
|
|
|
|
public:
|
|
|
|
static spinlock & spinlock_for( void const * pv )
|
|
{
|
|
#if defined(__VMS) && __INITIAL_POINTER_SIZE == 64
|
|
std::size_t i = reinterpret_cast< unsigned long long >( pv ) % 41;
|
|
#else
|
|
std::size_t i = reinterpret_cast< std::size_t >( pv ) % 41;
|
|
#endif
|
|
return pool_[ i ];
|
|
}
|
|
|
|
class scoped_lock
|
|
{
|
|
private:
|
|
|
|
spinlock & sp_;
|
|
|
|
scoped_lock( scoped_lock const & );
|
|
scoped_lock & operator=( scoped_lock const & );
|
|
|
|
public:
|
|
|
|
explicit scoped_lock( void const * pv ): sp_( spinlock_for( pv ) )
|
|
{
|
|
sp_.lock();
|
|
}
|
|
|
|
~scoped_lock()
|
|
{
|
|
sp_.unlock();
|
|
}
|
|
};
|
|
};
|
|
|
|
template< int M > spinlock spinlock_pool< M >::pool_[ 41 ] =
|
|
{
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT, BOOST_DETAIL_SPINLOCK_INIT,
|
|
BOOST_DETAIL_SPINLOCK_INIT
|
|
};
|
|
|
|
} // namespace detail
|
|
} // namespace boost
|
|
|
|
#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_POOL_HPP_INCLUDED
|