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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

#include <boost/interprocess/managed_shared_memory.hpp>

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

#include <boost/interprocess/containers/map.hpp>

#include <boost/interprocess/containers/vector.hpp>

#include <boost/interprocess/containers/string.hpp>

//<-

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

//->

using namespace boost::interprocess;

//Typedefs of allocators and containers

typedef managed_shared_memory::segment_manager segment_manager_t;

typedef allocator<void, segment_manager_t> void_allocator;

typedef allocator<int, segment_manager_t> int_allocator;

typedef vector<int, int_allocator> int_vector;

typedef allocator<int_vector, segment_manager_t> int_vector_allocator;

typedef vector<int_vector, int_vector_allocator> int_vector_vector;

typedef allocator<char, segment_manager_t> char_allocator;

typedef basic_string<char, std::char_traits<char>, char_allocator> char_string;

class complex_data

{

int id_;

char_string char_string_;

int_vector_vector int_vector_vector_;

public:

//Since void_allocator is convertible to any other allocator<T>, we can simplify

//the initialization taking just one allocator for all inner containers.

complex_data(int id, const char *name, const void_allocator &void_alloc)

: id_(id), char_string_(name, void_alloc), int_vector_vector_(void_alloc)

{}

//Other members...

//<-

int get_id() { return id_; };

char_string get_char_string() { return char_string_; };

int_vector_vector get_int_vector_vector() { return int_vector_vector_; };

//->

};

//Definition of the map holding a string as key and complex_data as mapped type

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

typedef std::pair<char_string, complex_data> movable_to_map_value_type;

typedef allocator<map_value_type, segment_manager_t> map_value_type_allocator;

typedef map< char_string, complex_data

, std::less<char_string>, map_value_type_allocator> complex_map_type;

int main ()

{

//Remove shared memory on construction and destruction

struct shm_remove

{

//<-

#if 1

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

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

#else

//->

shm_remove() { shared_memory_object::remove("MySharedMemory"); }

~shm_remove(){ shared_memory_object::remove("MySharedMemory"); }

//<-

#endif

//->

} remover;

//<-

(void)remover;

//->

//Create shared memory

//<-

#if 1

managed_shared_memory segment(create_only,test::get_process_id_name(), 65536);

#else

//->

managed_shared_memory segment(create_only,"MySharedMemory", 65536);

//<-

#endif

//->

//An allocator convertible to any allocator<T, segment_manager_t> type

void_allocator alloc_inst (segment.get_segment_manager());

//Construct the shared memory map and fill it

complex_map_type *mymap = segment.construct<complex_map_type>

//(object name), (first ctor parameter, second ctor parameter)

("MyMap")(std::less<char_string>(), alloc_inst);

for(int i = 0; i < 100; ++i){

//Both key(string) and value(complex_data) need an allocator in their constructors

char_string key_object(alloc_inst);

complex_data mapped_object(i, "default_name", alloc_inst);

map_value_type value(key_object, mapped_object);

//Modify values and insert them in the map

mymap->insert(value);

}

return 0;

}

//]

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