This is what i have so far. But this doesnt even compile. What should i do to make it work?
typedef allocator<int, managed_shared_memory::segment_manager> vecAllocator;
typedef vector<int, vecAllocator> vec;
typedef std::pair<const int, vec> ValueType;
typedef allocator<ValueType, managed_shared_memory::segment_manager> ShmemAllocator;
typedef multimap<int, vec, std::less<int>, ShmemAllocator> MyMap;
ShmemAllocator alloc_inst (segment.get_segment_manager());
vecAllocator vectorallocator (segment.get_segment_manager());
MyMap *mymap = segment.construct<MyMap>("MyMap")(std::less<int>(),alloc_inst);
vec *myvec = segment.construct<vec>("myvec")(std::less<int>(), vectorallocator);
myvec->push_back(10);
how do i proceed now to insert this vector into the map?
This is one of the things that I tried
mymap->insert(std::pair<const int, vec>(i, myvec));
but doesnt seem to work. I kno that creating a pointer to a vector in shared memory is not the right way to go. I need to create an object for that if i am to insert it into the map. but how to do that or atleast how to incorporate these things in shared memory?
the error thrown by g++ is :
sharedMap.cpp:46: no matching function for call to ‘std::pair<const int, boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > > >::pair(int&, main()::vec*&)’
/usr/include/c++/4.2.1/bits/stl_pair.h:84: note: candidates are: std::pair<_T1, _T2>::pair(const _T1&, const _T2&) [with _T1 = const int, _T2 = boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > >]
/usr/include/c++/4.2.1/bits/stl_pair.h:80: note: std::pair<_T1, _T2>::pair() [with _T1 = const int, _T2 = boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > >]
/usr/include/c++/4.2.1/bits/stl_pair.h:69: note: std::pair<const int, boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > > >::pair(const std::pair<const int, boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > > >&)
/usr/local/include/boost/preprocessor/iteration/detail/local.hpp: In member function ‘void boost::interprocess::detail::Ctor2Arg<T, is_iterator, P0, P1>::construct(void*, boost::interprocess::detail::false_) [with T = boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > >, bool is_iterator = false, P0 = std::less<int>, P1 = boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >]’:
/usr/local/include/boost/preprocessor/iteration/detail/local.hpp:40: instantiated from ‘void boost::interprocess::detail::Ctor2Arg<T, is_iterator, P0, P1>::construct_n(void*, size_t, size_t&) [with T = boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > >, bool is_iterator = false, P0 = std::less<int>, P1 = boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >]’
sharedMap.cpp:54: instantiated from here
/usr/local/include/boost/preprocessor/iteration/detail/local.hpp:40: error: no matching function for call to ‘boost::container::vector<int, boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> > >::vector(const std::less<int>&, const boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >&)’
/usr/local/include/boost/interprocess/containers/container/vector.hpp:474: note: candidates are: boost::container::vector<T, A>::vector(boost::interprocess::rv<boost::container::vector<T, A> >&) [with T = int, A = boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >]
/usr/local/include/boost/interprocess/containers/container/vector.hpp:465: note: boost::container::vector<T, A>::vector(const boost::container::vector<T, A>&) [with T = int, A = boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >]
/usr/local/include/boost/interprocess/containers/container/vector.hpp:456: note: boost::container::vector<T, A>::vector(typename A::size_type, const T&, const A&) [with T = int, A = boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >]
/usr/local/include/boost/interprocess/containers/container/vector.hpp:445: note: boost::container::vector<T, A>::vector(typename A::size_type) [with T = int, A = boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >]
/usr/local/include/boost/interprocess/containers/container/vector.hpp:434: note: boost::container::vector<T, A>::vector(const A&) [with T = int, A = boost::interprocess::allocator<int, boost::interprocess::segment_manager<char, boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family, boost::interprocess::offset_ptr<void>, 0ul>, boost::interprocess::iset_index> >]
line 54 is the return last line in main (its the return)
line 46 is the mymap-> insert line.
The problem is here:
vec *myvec = segment.construct<vec>("myvec")(std::less<int>(), vectorallocator);there is no use for passing
std::less<int>instance. Try this:vec *myvec = segment.construct<vec>("myvec")(vectorallocator);