-//$$CDS-header$$
+/*
+ This file is a part of libcds - Concurrent Data Structures library
+
+ (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2017
+
+ 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_OPTIMISTIC_QUEUE_H
#define CDSLIB_CONTAINER_OPTIMISTIC_QUEUE_H
*/
typedef opt::v::relaxed_ordering memory_model;
- /// Alignment of internal queue data. Default is \p opt::cache_line_alignment
- enum { alignment = opt::cache_line_alignment };
+ /// Padding for internal critical atomic data. Default is \p opt::cache_line_padding
+ enum { padding = opt::cache_line_padding };
};
/// Metafunction converting option list to \p msqueue::traits
/**
Supported \p Options are:
- - opt::allocator - allocator (like \p std::allocator) used for allocating queue nodes. Default is \ref CDS_DEFAULT_ALLOCATOR
- - opt::back_off - back-off strategy used, default is \p cds::backoff::empty.
- - opt::item_counter - the type of item counting feature. Default is \p cds::atomicity::empty_item_counter (item counting disabled)
+ - \p opt::allocator - allocator (like \p std::allocator) used for allocating queue nodes. Default is \ref CDS_DEFAULT_ALLOCATOR
+ - \p opt::back_off - back-off strategy used, default is \p cds::backoff::empty.
+ - \p opt::item_counter - the type of item counting feature. Default is \p cds::atomicity::empty_item_counter (item counting disabled)
To enable item counting use \p cds::atomicity::item_counter
- - opt::stat - the type to gather internal statistics.
+ - \p opt::stat - the type to gather internal statistics.
Possible statistics types are: \p optimistic_queue::stat, \p optimistic_queue::empty_stat,
user-provided class that supports \p %optimistic_queue::stat interface.
Default is \p %optimistic_queue::empty_stat.
- - opt::alignment - the alignment for internal queue data. Default is \p opt::cache_line_alignment
- - opt::memory_model - C++ memory ordering model. Can be \p opt::v::relaxed_ordering (relaxed memory model, the default)
+ - \p opt::padding - padding for internal critical atomic data. Default is \p opt::cache_line_padding
+ - \p opt::memory_model - C++ memory ordering model. Can be \p opt::v::relaxed_ordering (relaxed memory model, the default)
or \p opt::v::sequential_consistent (sequentially consisnent memory model).
Example: declare \p OptimisticQueue with item counting and internal statistics
return false;
}
+ /// Enqueues \p val value into the queue, move semntics
+ bool enqueue( value_type&& val )
+ {
+ scoped_node_ptr p( alloc_node_move( std::move( val )));
+ if ( base_class::enqueue( *p )) {
+ p.release();
+ return true;
+ }
+ return false;
+ }
+
/// Enqueues \p data to queue using a functor
/**
\p Func is a functor called to create node.
template <typename Func>
bool enqueue_with( Func f )
{
- scoped_node_ptr p( alloc_node() );
+ scoped_node_ptr p( alloc_node());
f( p->m_value );
if ( base_class::enqueue( *p )) {
p.release();
return false;
}
- /// Synonym for \p enqueue() function
+ /// Synonym for \p enqueue( const value_type& ) function
bool push( const value_type& val )
{
return enqueue( val );
}
+ /// Synonym for \p enqueue( value_type&& ) function
+ bool push( value_type&& val )
+ {
+ return enqueue( std::move( val ));
+ }
+
/// Synonym for \p enqueue_with() function
template <typename Func>
bool push_with( Func f )
*/
bool dequeue( value_type& dest )
{
- return dequeue_with( [&dest]( value_type& src ) { dest = src; } );
+ return dequeue_with( [&dest]( value_type& src ) { dest = std::move( src ); });
}
/// Dequeues a value using a functor
bool dequeue_with( Func f )
{
typename base_class::dequeue_result res;
- if ( base_class::do_dequeue( res ) ) {
+ if ( base_class::do_dequeue( res )) {
f( node_traits::to_value_ptr( *res.pNext )->m_value );
base_class::dispose_result( res );
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