-//$$CDS-header$$
-
-#ifndef __CDS_CONTAINER_LAZY_LIST_NOGC_H
-#define __CDS_CONTAINER_LAZY_LIST_NOGC_H
+/*
+ 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_CONTAINER_LAZY_LIST_NOGC_H
+#define CDSLIB_CONTAINER_LAZY_LIST_NOGC_H
#include <memory>
#include <cds/container/details/lazy_list_base.h>
This specialization is so-called append-only when no item
reclamation may be performed. The class does not support deleting of list item.
- @copydetails cds_nonintrusive_LazyList_gc
+ The list can be ordered if \p Traits::sort is \p true that is default
+ or unordered otherwise. Unordered list can be maintained by \p equal_to
+ relationship (\p Traits::equal_to), but for the ordered list \p less
+ or \p compare relations should be specified in \p Traits.
+
+ See @ref cds_nonintrusive_LazyList_gc "cds::container::LazyList<cds::gc::nogc, T, Traits>"
*/
template <
typename T,
typedef T value_type; ///< Type of value stored in the list
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::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 comparing 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 bool const c_bSort = base_class::c_bSort; ///< List type: ordered (\p true) or unordered (\p false)
protected:
//@cond
- typedef typename base_class::value_type node_type;
- typedef typename maker::cxx_allocator cxx_allocator;
- typedef typename maker::node_deallocator node_deallocator;
- typedef typename maker::intrusive_traits::compare intrusive_key_comparator;
+ typedef typename base_class::value_type node_type;
+ typedef typename maker::cxx_allocator cxx_allocator;
+ typedef typename maker::node_deallocator node_deallocator;
+ typedef typename base_class::key_comparator intrusive_key_comparator;
typedef typename base_class::node_type head_type;
//@endcond
protected:
//@cond
+ static value_type& node_to_value( node_type& n )
+ {
+ return n.m_Value;
+ }
+
static node_type * alloc_node()
{
return cxx_allocator().New();
//@endcond
public:
+ ///@name Forward iterators
+ //@{
/// Returns a forward iterator addressing the first element in a list
/**
For empty list \code begin() == end() \endcode
}
/// Returns a forward const iterator addressing the first element in a list
- //@{
const_iterator begin() const
{
const_iterator it( head() );
++it ; // skip dummy head node
return it;
}
+
+ /// Returns a forward const iterator addressing the first element in a list
const_iterator cbegin() const
{
const_iterator it( head() );
++it ; // skip dummy head node
return it;
}
- //@}
/// Returns an const iterator that addresses the location succeeding the last element in a list
- //@{
const_iterator end() const
{
return const_iterator( tail());
}
+
+ /// Returns an const iterator that addresses the location succeeding the last element in a list
const_iterator cend() const
{
return const_iterator( tail());
}
- //@}
+ //@}
protected:
//@cond
LazyList()
{}
+ //@cond
+ template <typename Stat, typename = std::enable_if<std::is_same<stat, lazy_list::wrapped_stat<Stat>>::value >>
+ explicit LazyList( Stat& st )
+ : base_class( st )
+ {}
+ //@endcond
+
/// Desctructor clears the list
~LazyList()
{
return node_to_iterator( emplace_at( head(), std::forward<Args>(args)... ));
}
- /// Ensures that the item \p val exists in the list
+ /// Updates the item
/**
- The operation inserts new item if the key \p val is not found in the list.
- Otherwise, the function returns an iterator that points to item found.
+ If \p key is not in the list and \p bAllowInsert is \p true,
+
+ the function inserts a new item.
+ Otherwise, the function returns an iterator pointing to the item found.
Returns <tt> std::pair<iterator, bool> </tt> where \p first is an iterator pointing to
- item found or inserted, \p second is \p true if new item has been added or \p false if the item
+ item found or inserted, \p second is true if new item has been added or \p false if the item
already is in the list.
*/
template <typename Q>
- std::pair<iterator, bool> ensure( Q const& val )
+ std::pair<iterator, bool> update( Q const& val, bool bAllowInsert = true )
{
- std::pair< node_type *, bool > ret = ensure_at( head(), val );
+ std::pair< node_type *, bool > ret = update_at( head(), val, bAllowInsert );
return std::make_pair( node_to_iterator( ret.first ), ret.second );
}
+ //@cond
+ template <typename Q>
+ CDS_DEPRECATED("ensure() is deprecated, use update()")
+ std::pair<iterator, bool> ensure( Q const& val )
+ {
+ return update( val, true );
+ }
+ //@endcond
- /// Find the key \p val
- /** \anchor cds_nonintrusive_LazyList_nogc_find
- The function searches the item with key equal to \p val
+ /// Checks whether the list contains \p key
+ /**
+ The function searches the item with key equal to \p key
and returns an iterator pointed to item found if the key is found,
and \ref end() otherwise
*/
template <typename Q>
- iterator find( Q const& key )
+ iterator contains( Q const& key )
{
return node_to_iterator( find_at( head(), key, intrusive_key_comparator() ));
}
+ //@cond
+ template <typename Q>
+ CDS_DEPRECATED("deprecated, use contains()")
+ iterator find( Q const& key )
+ {
+ return contains( key );
+ }
+ //@endcond
- /// Finds the key \p val using \p pred predicate for searching
+ /// Checks whether the map contains \p key using \p pred predicate for searching (ordered list version)
/**
- The function is an analog of \ref cds_nonintrusive_LazyList_nogc_find "find(Q const&)"
- but \p pred is used for key comparing.
+ The function is an analog of <tt>contains( key )</tt> but \p pred is used for key comparing.
\p Less functor has the interface like \p std::less.
- \p pred must imply the same element order as the comparator used for building the list.
+ \p Less must imply the same element order as the comparator used for building the list.
*/
- template <typename Q, typename Less>
- iterator find_with( Q const& key, Less pred )
+ template <typename Q, typename Less, bool Sort = c_bSort>
+ typename std::enable_if<Sort, iterator>::type contains( Q const& key, Less pred )
{
+ CDS_UNUSED( pred );
return node_to_iterator( find_at( head(), key, typename maker::template less_wrapper<Less>::type() ));
}
+ //@cond
+ template <typename Q, typename Less, bool Sort = c_bSort>
+ CDS_DEPRECATED("deprecated, use contains()")
+ typename std::enable_if<Sort, iterator>::type find_with( Q const& key, Less pred )
+ {
+ return contains( key, pred );
+ }
+ //@endcond
+
+ /// Finds the key \p val using \p equal predicate for searching (unordered list version)
+ /**
+ The function is an analog of <tt>contains( key )</tt> but \p equal is used for key comparing.
+ \p Equal functor has the interface like \p std::equal_to.
+ */
+ template <typename Q, typename Equal, bool Sort = c_bSort>
+ typename std::enable_if<!Sort, iterator>::type contains( Q const& key, Equal equal )
+ {
+ CDS_UNUSED( equal );
+ return node_to_iterator( find_at( head(), key, typename maker::template equal_to_wrapper<Equal>::type() ));
+ }
+ //@cond
+ template <typename Q, typename Equal, bool Sort = c_bSort>
+ CDS_DEPRECATED("deprecated, use contains()")
+ typename std::enable_if<!Sort, iterator>::type find_with( Q const& key, Equal equal )
+ {
+ return contains( key, equal );
+ }
+ //@endcond
/// Check if the list is empty
bool empty() const
return base_class::size();
}
+ /// Returns const reference to internal statistics
+ stat const& statistics() const
+ {
+ return base_class::statistics();
+ }
+
/// Clears the list
void clear()
{
protected:
//@cond
+ iterator insert_node( node_type * pNode )
+ {
+ return node_to_iterator( insert_node_at( head(), pNode ));
+ }
+
node_type * insert_node_at( head_type& refHead, node_type * pNode )
{
assert( pNode != nullptr );
}
template <typename Q>
- std::pair< node_type *, bool > ensure_at( head_type& refHead, Q const& val )
+ std::pair< node_type *, bool > update_at( head_type& refHead, Q const& val, bool bAllowInsert )
{
scoped_node_ptr pNode( alloc_node( val ));
node_type * pItemFound = nullptr;
- std::pair<bool, bool> ret = base_class::ensure_at( &refHead, *pNode,
- [&pItemFound](bool, node_type& item, node_type&){ pItemFound = &item; });
- assert( pItemFound != nullptr );
+ std::pair<bool, bool> ret = base_class::update_at( &refHead, *pNode,
+ [&pItemFound](bool, node_type& item, node_type&){ pItemFound = &item; },
+ bAllowInsert );
- if ( ret.first && ret.second )
+ if ( ret.second )
pNode.release();
return std::make_pair( pItemFound, ret.second );
};
}} // namespace cds::container
-#endif // #ifndef __CDS_CONTAINER_LAZY_LIST_NOGC_H
+#endif // #ifndef CDSLIB_CONTAINER_LAZY_LIST_NOGC_H
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