mirror of
https://github.com/boostorg/intrusive.git
synced 2025-10-31 16:01:36 +01:00
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// (C) Copyright Ion Gaztanaga 2006-2009
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
// See http://www.boost.org/libs/intrusive for documentation.
|
|
//
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
//[doc_iterator_from_value
|
|
#include <boost/intrusive/list.hpp>
|
|
#include <boost/intrusive/unordered_set.hpp>
|
|
#include <boost/functional/hash.hpp>
|
|
#include <vector>
|
|
|
|
using namespace boost::intrusive;
|
|
|
|
class intrusive_data
|
|
{
|
|
int data_id_;
|
|
public:
|
|
|
|
void set(int id) { data_id_ = id; }
|
|
|
|
//This class can be inserted in an intrusive list
|
|
list_member_hook<> list_hook_;
|
|
|
|
//This class can be inserted in an intrusive unordered_set
|
|
unordered_set_member_hook<> unordered_set_hook_;
|
|
|
|
//Comparison operators
|
|
friend bool operator==(const intrusive_data &a, const intrusive_data &b)
|
|
{ return a.data_id_ == b.data_id_; }
|
|
|
|
friend bool operator!=(const intrusive_data &a, const intrusive_data &b)
|
|
{ return a.data_id_ != b.data_id_; }
|
|
|
|
//The hash function
|
|
friend std::size_t hash_value(const intrusive_data &i)
|
|
{ return boost::hash<int>()(i.data_id_); }
|
|
};
|
|
|
|
//Definition of the intrusive list that will hold intrusive_data
|
|
typedef member_hook<intrusive_data, list_member_hook<>
|
|
, &intrusive_data::list_hook_> MemberListOption;
|
|
typedef list<intrusive_data, MemberListOption> list_t;
|
|
|
|
//Definition of the intrusive unordered_set that will hold intrusive_data
|
|
typedef member_hook
|
|
< intrusive_data, unordered_set_member_hook<>
|
|
, &intrusive_data::unordered_set_hook_> MemberUsetOption;
|
|
typedef boost::intrusive::unordered_set
|
|
< intrusive_data, MemberUsetOption> unordered_set_t;
|
|
|
|
int main()
|
|
{
|
|
//Create MaxElem objects
|
|
const int MaxElem = 100;
|
|
std::vector<intrusive_data> nodes(MaxElem);
|
|
|
|
//Declare the intrusive containers
|
|
list_t list;
|
|
unordered_set_t::bucket_type buckets[MaxElem];
|
|
unordered_set_t unordered_set
|
|
(unordered_set_t::bucket_traits(buckets, MaxElem));
|
|
|
|
//Initialize all the nodes
|
|
for(int i = 0; i < MaxElem; ++i) nodes[i].set(i);
|
|
|
|
//Now insert them in both intrusive containers
|
|
list.insert(list.end(), nodes.begin(), nodes.end());
|
|
unordered_set.insert(nodes.begin(), nodes.end());
|
|
|
|
//Now check the iterator_to function
|
|
list_t::iterator list_it(list.begin());
|
|
for(int i = 0; i < MaxElem; ++i, ++list_it)
|
|
if(list.iterator_to(nodes[i]) != list_it ||
|
|
list_t::s_iterator_to(nodes[i]) != list_it)
|
|
return 1;
|
|
|
|
//Now check unordered_set::s_iterator_to (which is a member function)
|
|
//and unordered_set::s_local_iterator_to (which is an static member function)
|
|
unordered_set_t::iterator unordered_set_it(unordered_set.begin());
|
|
for(int i = 0; i < MaxElem; ++i){
|
|
unordered_set_it = unordered_set.find(nodes[i]);
|
|
if(unordered_set.iterator_to(nodes[i]) != unordered_set_it)
|
|
return 1;
|
|
if(*unordered_set.local_iterator_to(nodes[i]) != *unordered_set_it ||
|
|
*unordered_set_t::s_local_iterator_to(nodes[i]) != *unordered_set_it )
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
//]
|