| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (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/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... |
| }; |
| |
| //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; |
| |
| //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> |