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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/config_begin.hpp>
- #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;
- }
- //]
- #include <boost/interprocess/detail/config_end.hpp>
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