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// Copyright (c) 2006-2018 Maxim Khizhinsky
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef CDSLIB_CONTAINER_STRIPED_SET_BOOST_VECTOR_ADAPTER_H
#define CDSLIB_CONTAINER_STRIPED_SET_BOOST_VECTOR_ADAPTER_H
#include <boost/version.hpp>
#if BOOST_VERSION < 104800
# error "For boost::container::vector you must use boost 1.48 or above"
#endif
#include <functional> // ref
#include <algorithm> // std::lower_bound
#include <utility> // std::pair
#include <cds/container/striped_set/adapter.h> // lower_bound
#include <boost/container/vector.hpp>
//@cond
namespace cds { namespace container {
namespace striped_set {
// Copy policy for boost::container::vector
template <typename T, typename Alloc>
struct copy_item_policy< boost::container::vector< T, Alloc > >
{
typedef boost::container::vector< T, Alloc > vector_type;
typedef typename vector_type::iterator iterator;
void operator()( vector_type& vec, iterator itInsert, iterator itWhat )
{
vec.insert( itInsert, *itWhat );
}
};
// Swap policy for boost::container::vector
template <typename T, typename Alloc>
struct swap_item_policy< boost::container::vector< T, Alloc > >
{
typedef boost::container::vector< T, Alloc > vector_type;
typedef typename vector_type::iterator iterator;
void operator()( vector_type& vec, iterator itInsert, iterator itWhat )
{
typename vector_type::value_type newVal;
itInsert = vec.insert( itInsert, newVal );
std::swap( *itInsert, *itWhat );
}
};
// Move policy for boost::container::vector
template <typename T, typename Alloc>
struct move_item_policy< boost::container::vector< T, Alloc > >
{
typedef boost::container::vector< T, Alloc > vector_type;
typedef typename vector_type::iterator iterator;
void operator()( vector_type& vec, iterator itInsert, iterator itWhat )
{
vec.insert( itInsert, std::move( *itWhat ));
}
};
} // namespace striped_set
}} // namespace cds::container
namespace cds { namespace intrusive { namespace striped_set {
/// boost::container::vector adapter for hash set bucket
template <typename T, class Alloc, typename... Options>
class adapt< boost::container::vector<T, Alloc>, Options... >
{
public:
typedef boost::container::vector<T, Alloc> container_type ; ///< underlying container type
private:
/// Adapted container type
class adapted_container: public cds::container::striped_set::adapted_sequential_container
{
public:
typedef typename container_type::value_type value_type ; ///< value type stored in the container
typedef typename container_type::iterator iterator ; ///< container iterator
typedef typename container_type::const_iterator const_iterator ; ///< container const iterator
static bool const has_find_with = true;
static bool const has_erase_with = true;
private:
//@cond
typedef typename cds::opt::details::make_comparator_from_option_list< value_type, Options... >::type key_comparator;
typedef typename cds::opt::select<
typename cds::opt::value<
typename cds::opt::find_option<
cds::opt::copy_policy< cds::container::striped_set::move_item >
, Options...
>::type
>::copy_policy
, cds::container::striped_set::copy_item, cds::container::striped_set::copy_item_policy<container_type>
, cds::container::striped_set::swap_item, cds::container::striped_set::swap_item_policy<container_type>
, cds::container::striped_set::move_item, cds::container::striped_set::move_item_policy<container_type>
>::type copy_item;
struct find_predicate
{
bool operator()( value_type const& i1, value_type const& i2) const
{
return key_comparator()( i1, i2 ) < 0;
}
template <typename Q>
bool operator()( Q const& i1, value_type const& i2) const
{
return key_comparator()( i1, i2 ) < 0;
}
template <typename Q>
bool operator()( value_type const& i1, Q const& i2) const
{
return key_comparator()( i1, i2 ) < 0;
}
};
//@endcond
private:
//@cond
container_type m_Vector;
//@endcond
public:
template <typename Q, typename Func>
bool insert( const Q& val, Func f )
{
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), val, find_predicate());
if ( it == m_Vector.end() || key_comparator()( val, *it ) != 0 ) {
value_type newItem( val );
it = m_Vector.insert( it, newItem );
f( *it );
return true;
}
return false;
}
template <typename... Args>
bool emplace( Args&&... args )
{
value_type val( std::forward<Args>(args)... );
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), val, find_predicate());
if ( it == m_Vector.end() || key_comparator()( val, *it ) != 0 ) {
it = m_Vector.emplace( it, std::move( val ));
return true;
}
return false;
}
template <typename Q, typename Func>
std::pair<bool, bool> update( const Q& val, Func func, bool bAllowInsert )
{
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), val, find_predicate());
if ( it == m_Vector.end() || key_comparator()( val, *it ) != 0 ) {
// insert new
if ( !bAllowInsert )
return std::make_pair( false, false );
value_type newItem( val );
it = m_Vector.insert( it, newItem );
func( true, *it, val );
return std::make_pair( true, true );
}
else {
// already exists
func( false, *it, val );
return std::make_pair( true, false );
}
}
template <typename Q, typename Func>
bool erase( const Q& key, Func f )
{
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), key, find_predicate());
if ( it == m_Vector.end() || key_comparator()( key, *it ) != 0 )
return false;
// key exists
f( *it );
m_Vector.erase( it );
return true;
}
template <typename Q, typename Less, typename Func>
bool erase( Q const& key, Less pred, Func f )
{
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), key, pred );
if ( it == m_Vector.end() || pred( key, *it ) || pred( *it, key ))
return false;
// key exists
f( *it );
m_Vector.erase( it );
return true;
}
template <typename Q, typename Func>
bool find( Q& val, Func f )
{
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), val, find_predicate());
if ( it == m_Vector.end() || key_comparator()( val, *it ) != 0 )
return false;
// key exists
f( *it, val );
return true;
}
template <typename Q, typename Less, typename Func>
bool find( Q& val, Less pred, Func f )
{
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), val, pred );
if ( it == m_Vector.end() || pred( val, *it ) || pred( *it, val ))
return false;
// key exists
f( *it, val );
return true;
}
/// Clears the container
void clear()
{
m_Vector.clear();
}
iterator begin() { return m_Vector.begin(); }
const_iterator begin() const { return m_Vector.begin(); }
iterator end() { return m_Vector.end(); }
const_iterator end() const { return m_Vector.end(); }
void move_item( adapted_container& /*from*/, iterator itWhat )
{
iterator it = std::lower_bound( m_Vector.begin(), m_Vector.end(), *itWhat, find_predicate());
assert( it == m_Vector.end() || key_comparator()( *itWhat, *it ) != 0 );
copy_item()( m_Vector, it, itWhat );
}
size_t size() const
{
return m_Vector.size();
}
};
public:
typedef adapted_container type ; ///< Result of \p adapt metafunction
};
}}} // namespace cds::intrusive::striped_set
//@endcond
#endif // #ifndef CDSLIB_CONTAINER_STRIPED_SET_BOOST_VECTOR_ADAPTER_H
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