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//////////////////////////////////////////////////////////////////////////////

// (C) Copyright Ion Gaztanaga 2006-2012. 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/interprocess for documentation.

//////////////////////////////////////////////////////////////////////////////

#include <boost/interprocess/detail/workaround.hpp>

//[doc_complex_map_uses_allocator

#include <boost/interprocess/managed_shared_memory.hpp>

#include <boost/interprocess/allocators/allocator.hpp>

#include <boost/container/map.hpp>

#include <boost/container/vector.hpp>

#include <boost/container/string.hpp>

//=#include <functional>

//<-

#include "../test/get_process_id_name.hpp"

//->

using namespace boost::interprocess;

namespace bc = boost::container;

//Typedefs of allocators and containers

typedef managed_shared_memory::segment_manager seg_mngr_t;

typedef allocator<void, seg_mngr_t> void_alloc_t;

typedef bc::vector<int, allocator<int, seg_mngr_t> > int_vec_t;

typedef bc::vector<int_vec_t, allocator<int_vec_t, seg_mngr_t> > int_vec_vec_t;

typedef bc::basic_string

<char, std::char_traits<char>, allocator<char, seg_mngr_t> > string_t;

class complex_data

{

string_t string_;

int_vec_vec_t int_vec_vec_;

public:

typedef void_alloc_t allocator_type; //Activates the uses-allocator protocol

complex_data(const char *name, const void_alloc_t &valloc) //void_alloc_t is convertible to allocator<T>

: string_(name, valloc), int_vec_vec_(valloc)

{}

//<-

string_t get_char_string() { return string_; };

int_vec_vec_t get_int_vector_vector() { return int_vec_vec_; };

//->

};

//<-

struct lessthan //A transparent comparison functor

{

typedef void is_transparent;

template<class T, class U> bool operator() (const T &t, const U &u) const { return t < u; }

};

//->

//Definition of a shared memory map<string_t, complex_data...> with transparent comparison

typedef std::pair<const string_t, complex_data> map_value_type;

typedef allocator<map_value_type, seg_mngr_t> map_value_type_allocator;

//=typedef bc::map< string_t, complex_data, std::less<>

//<-

typedef bc::map< string_t, complex_data, lessthan

//->

, map_value_type_allocator> complex_map_type;

int main ()

{

//<-

//Remove shared memory on construction and destruction

struct shm_remove

{

shm_remove() { shared_memory_object::remove(test::get_process_id_name()); }

~shm_remove(){ shared_memory_object::remove(test::get_process_id_name()); }

} remover;

(void)remover;

//->

managed_shared_memory segment(create_only, test::get_process_id_name(), 65536); //Create shared memory

//Construct the map calling map(key_compare, allocator_type), the allocator argument is implicit

complex_map_type *mymap = segment.construct<complex_map_type>("MyMap")();

//Efficient transparent insertion, string_t and complex_data are constructed in-place with implicit allocators

mymap->try_emplace("key_str", "default_name");

return 0;

}

//]

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