-//$$CDS-header$$
+/*
+ This file is a part of libcds - Concurrent Data Structures library
+
+ (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2016
+
+ Source code repo: http://github.com/khizmax/libcds/
+ Download: http://sourceforge.net/projects/libcds/files/
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ 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.
+*/
#ifndef CDSLIB_INTRUSIVE_SKIP_LIST_NOGC_H
#define CDSLIB_INTRUSIVE_SKIP_LIST_NOGC_H
//@cond
static unsigned int const c_nMinHeight = 3;
- typedef cds::intrusive::skip_list::implementation_tag implementation_tag;
//@endcond
protected:
}
public:
- /// Iterator type
+ ///@name Forward iterators
+ //@{
+ /// Forward iterator
+ /**
+ The forward iterator for a split-list has some features:
+ - it has no post-increment operator
+ - it depends on iterator of underlying \p OrderedList
+ */
typedef skip_list::details::iterator< gc, node_traits, back_off, false > iterator;
/// Const iterator type
{
return const_iterator();
}
+ //@}
protected:
//@cond
}
}
- /// Ensures that the \p val exists in the set
+ /// Updates the node
/**
The operation performs inserting or changing data with lock-free manner.
- If the item \p val is not found in the set, then \p val is inserted into the set.
+ If the item \p val is not found in the set, then \p val is inserted into the set
+ iff \p bInsert is \p true.
Otherwise, the functor \p func is called with item found.
The functor signature is:
\code
with arguments:
- \p bNew - \p true if the item has been inserted, \p false otherwise
- \p item - item of the set
- - \p val - argument \p val passed into the \p ensure function
+ - \p val - argument \p val passed into the \p %update() function
If new item has been inserted (i.e. \p bNew is \p true) then \p item and \p val arguments
refer to the same thing.
@warning See \ref cds_intrusive_item_creating "insert item troubleshooting"
*/
template <typename Func>
- std::pair<bool, bool> ensure( value_type& val, Func func )
+ std::pair<bool, bool> update( value_type& val, Func func, bool bInsert = true )
{
node_type * pNode = node_traits::to_node_ptr( val );
scoped_node_ptr scp( pNode );
scp.release();
func( false, *node_traits::to_value_ptr(pos.pCur), val );
- m_Stat.onEnsureExist();
+ m_Stat.onUpdateExist();
return std::make_pair( true, false );
}
+ if ( !bInsert ) {
+ scp.release();
+ return std::make_pair( false, false );
+ }
+
if ( !bTowerOk ) {
build_node( pNode );
nHeight = pNode->height();
++m_ItemCounter;
scp.release();
m_Stat.onAddNode( nHeight );
- m_Stat.onEnsureNew();
+ m_Stat.onUpdateNew();
return std::make_pair( true, true );
}
}
+ //@cond
+ template <typename Func>
+ CDS_DEPRECATED("ensure() is deprecated, use update()")
+ std::pair<bool, bool> ensure( value_type& val, Func func )
+ {
+ return update( val, func, true );
+ }
+ //@endcond
/// Finds \p key
/** \anchor cds_intrusive_SkipListSet_nogc_find_func
}
//@endcond
- /// Finds \p key
- /** \anchor cds_intrusive_SkipListSet_nogc_find_val
+ /// Checks whether the set contains \p key
+ /**
The function searches the item with key equal to \p key
- and returns \p true if it is found, and \p false otherwise.
-
- Note the hash functor specified for class \p Traits template parameter
- should accept a parameter of type \p Q that can be not the same as \p value_type.
+ and returns pointer to item found or \p nullptr.
*/
template <typename Q>
- value_type * find( Q const& key ) const
+ value_type * contains( Q const& key ) const
{
node_type * pNode = find_with_( key, key_comparator(), [](value_type& , Q const& ) {} );
if ( pNode )
return node_traits::to_value_ptr( pNode );
return nullptr;
}
+ //@cond
+ template <typename Q>
+ CDS_DEPRECATED("deprecated, use contains()")
+ value_type * find( Q const& key ) const
+ {
+ return contains( key );
+ }
+ //@endcond
- /// Finds \p key using \p pred predicate for comparing
+ /// Checks whether the set contains \p key using \p pred predicate for searching
/**
- The function is an analog of \ref cds_intrusive_SkipListSet_nogc_find_val "find(Q const&)"
- but \p pred predicate is used for key compare.
- \p Less has the interface like \p std::less.
- \p pred must imply the same element order as the comparator used for building the set.
+ The function is similar to <tt>contains( key )</tt> but \p pred is used for key comparing.
+ \p Less functor has the interface like \p std::less.
+ \p Less must imply the same element order as the comparator used for building the set.
*/
template <typename Q, typename Less>
- value_type * find_with( Q const& key, Less pred ) const
+ value_type * contains( Q const& key, Less pred ) const
{
CDS_UNUSED( pred );
node_type * pNode = find_with_( key, cds::opt::details::make_comparator_from_less<Less>(), [](value_type& , Q const& ) {} );
return node_traits::to_value_ptr( pNode );
return nullptr;
}
+ //@cond
+ template <typename Q, typename Less>
+ CDS_DEPRECATED("deprecated, use contains()")
+ value_type * find_with( Q const& key, Less pred ) const
+ {
+ return contains( key, pred );
+ }
+ //@endcond
/// Gets minimum key from the set
/**
projects / libcds.git / blobdiff