SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CDSLIB_CONTAINER_IMPL_MICHAEL_KVLIST_H
- \p Value - value type stored in a list
- \p Traits - type traits, default is \p michael_list::traits
- It is possible to declare option-based list with \p cds::container::michael_list::make_traits metafunction istead of \p Traits template
+ It is possible to declare option-based list with \p cds::container::michael_list::make_traits metafunction instead of \p Traits template
argument. For example, the following traits-based declaration of \p gc::HP Michael's list
\code
#include <cds/container/michael_kvlist_hp.h>
#endif
typedef typename base_class::gc gc; ///< Garbage collector used
+ typedef Traits traits; ///< List traits
typedef typename base_class::back_off back_off; ///< Back-off strategy used
typedef typename maker::allocator_type allocator_type; ///< Allocator type used for allocate/deallocate the nodes
typedef typename base_class::item_counter item_counter; ///< Item counting policy used
typedef typename maker::key_comparator key_comparator; ///< key comparison functor
typedef typename base_class::memory_model memory_model; ///< Memory ordering. See cds::opt::memory_model option
+ typedef typename base_class::stat stat; ///< Internal statistics
static CDS_CONSTEXPR const size_t c_nHazardPtrCount = base_class::c_nHazardPtrCount; ///< Count of hazard pointer required for the algorithm
+ //@cond
+ // Rebind traits (split-list support)
+ template <typename... Options>
+ struct rebind_traits {
+ typedef MichaelKVList<
+ gc
+ , key_type, mapped_type
+ , typename cds::opt::make_options< traits, Options...>::type
+ > type;
+ };
+
+ // Stat selector
+ template <typename Stat>
+ using select_stat_wrapper = typename base_class::template select_stat_wrapper< Stat >;
+ //@endcond
+
protected:
//@cond
typedef typename base_class::value_type node_type;
MichaelKVList()
{}
- /// List desctructor
+ //@cond
+ template <typename Stat, typename = std::enable_if<std::is_same<stat, michael_list::wrapped_stat<Stat>>::value >>
+ explicit MichaelKVList( Stat& st )
+ : base_class( st )
+ {}
+ //@endcond
+
+ /// List destructor
/**
Clears the list
*/
Returns \p true if inserting successful, \p false otherwise.
*/
template <typename K>
- bool insert( const K& key )
+ bool insert( K&& key )
{
- return insert_at( head(), key );
+ return insert_at( head(), std::forward<K>( key ));
}
/// Inserts new node with a key and a value
Returns \p true if inserting successful, \p false otherwise.
*/
template <typename K, typename V>
- bool insert( const K& key, const V& val )
+ bool insert( K&& key, V&& val )
{
// We cannot use insert with functor here
// because we cannot lock inserted node for updating
// Therefore, we use separate function
- return insert_at( head(), key, val );
+ return insert_at( head(), std::forward<K>( key ), std::forward<V>( val ));
}
/// Inserts new node and initialize it by a functor
@warning See \ref cds_intrusive_item_creating "insert item troubleshooting"
*/
template <typename K, typename Func>
- bool insert_with( const K& key, Func func )
+ bool insert_with( K&& key, Func func )
{
- return insert_with_at( head(), key, func );
+ return insert_with_at( head(), std::forward<K>( key ), func );
}
/// Updates data by \p key
@warning See \ref cds_intrusive_item_creating "insert item troubleshooting"
*/
template <typename K, typename Func>
- std::pair<bool, bool> update( K const& key, Func f, bool bAllowInsert = true )
+ std::pair<bool, bool> update( K&& key, Func f, bool bAllowInsert = true )
{
- return update_at( head(), key, f, bAllowInsert );
+ return update_at( head(), std::forward<K>( key ), f, bAllowInsert );
}
//@cond
template <typename K, typename Func>
template <typename K>
guarded_ptr extract( K const& key )
{
- guarded_ptr gp;
- extract_at( head(), gp.guard(), key, intrusive_key_comparator() );
- return gp;
+ return extract_at( head(), key, intrusive_key_comparator() );
}
/// Extracts the item from the list with comparing functor \p pred
guarded_ptr extract_with( K const& key, Less pred )
{
CDS_UNUSED( pred );
- guarded_ptr gp;
- extract_at( head(), gp.guard(), key, typename maker::template less_wrapper<Less>::type() );
- return gp;
+ return extract_at( head(), key, typename maker::template less_wrapper<Less>::type() );
}
/// Checks whether the list contains \p key
and returns it as \p guarded_ptr.
If \p key is not found the function returns an empty guarded pointer.
- The \p disposer specified in \p Traits class template parameter is called
- by garbage collector \p GC automatically when returned \p guarded_ptr object
- will be destroyed or released.
@note Each \p guarded_ptr object uses one GC's guard which can be limited resource.
Usage:
template <typename K>
guarded_ptr get( K const& key )
{
- guarded_ptr gp;
- get_at( head(), gp.guard(), key, intrusive_key_comparator() );
- return gp;
+ return get_at( head(), key, intrusive_key_comparator() );
}
/// Finds the \p key and return the item found
guarded_ptr get_with( K const& key, Less pred )
{
CDS_UNUSED( pred );
- guarded_ptr gp;
- get_at( head(), gp.guard(), key, typename maker::template less_wrapper<Less>::type() );
- return gp;
+ return get_at( head(), key, typename maker::template less_wrapper<Less>::type() );
}
/// Checks if the list is empty
base_class::clear();
}
+ /// Returns const reference to internal statistics
+ stat const& statistics() const
+ {
+ return base_class::statistics();
+ }
+
protected:
//@cond
bool insert_node_at( head_type& refHead, node_type * pNode )
}
template <typename K>
- bool insert_at( head_type& refHead, const K& key )
+ bool insert_at( head_type& refHead, K&& key )
{
- return insert_node_at( refHead, alloc_node( key ));
+ return insert_node_at( refHead, alloc_node( std::forward<K>( key )));
}
template <typename K, typename V>
- bool insert_at( head_type& refHead, const K& key, const V& val )
+ bool insert_at( head_type& refHead, K&& key, V&& val )
{
- return insert_node_at( refHead, alloc_node( key, val ));
+ return insert_node_at( refHead, alloc_node( std::forward<K>( key ), std::forward<V>( val )));
}
template <typename K, typename Func>
- bool insert_with_at( head_type& refHead, const K& key, Func f )
+ bool insert_with_at( head_type& refHead, K&& key, Func f )
{
- scoped_node_ptr pNode( alloc_node( key ));
+ scoped_node_ptr pNode( alloc_node( std::forward<K>( key )));
if ( base_class::insert_at( refHead, *pNode, [&f](node_type& node){ f( node.m_Data ); })) {
pNode.release();
}
template <typename K, typename Func>
- std::pair<bool, bool> update_at( head_type& refHead, const K& key, Func f, bool bAllowInsert )
+ std::pair<bool, bool> update_at( head_type& refHead, K&& key, Func f, bool bAllowInsert )
{
- scoped_node_ptr pNode( alloc_node( key ));
+ scoped_node_ptr pNode( alloc_node( std::forward<K>( key )));
std::pair<bool, bool> ret = base_class::update_at( refHead, *pNode,
[&f]( bool bNew, node_type& node, node_type& ){ f( bNew, node.m_Data ); },
return base_class::erase_at( refHead, key, cmp, [&f]( node_type const & node ){ f( const_cast<value_type&>(node.m_Data)); });
}
template <typename K, typename Compare>
- bool extract_at( head_type& refHead, typename guarded_ptr::native_guard& guard, K const& key, Compare cmp )
+ guarded_ptr extract_at( head_type& refHead, K const& key, Compare cmp )
{
- return base_class::extract_at( refHead, guard, key, cmp );
+ return base_class::extract_at( refHead, key, cmp );
}
template <typename K, typename Compare>
}
template <typename K, typename Compare>
- bool get_at( head_type& refHead, typename guarded_ptr::native_guard& guard, K const& key, Compare cmp )
+ guarded_ptr get_at( head_type& refHead, K const& key, Compare cmp )
{
- return base_class::get_at( refHead, guard, key, cmp );
+ return base_class::get_at( refHead, key, cmp );
}
//@endcond
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