| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (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_multi_index |
| #include <boost/interprocess/managed_shared_memory.hpp> |
| #include <boost/interprocess/allocators/allocator.hpp> |
| #include <boost/interprocess/containers/string.hpp> |
| |
| #include <boost/multi_index_container.hpp> |
| #include <boost/multi_index/member.hpp> |
| #include <boost/multi_index/ordered_index.hpp> |
| //<- |
| #include "../test/get_process_id_name.hpp" |
| //-> |
| |
| using namespace boost::interprocess; |
| namespace bmi = boost::multi_index; |
| |
| typedef managed_shared_memory::allocator<char>::type char_allocator; |
| typedef basic_string<char, std::char_traits<char>, char_allocator>shm_string; |
| |
| //Data to insert in shared memory |
| struct employee |
| { |
| int id; |
| int age; |
| shm_string name; |
| employee( int id_ |
| , int age_ |
| , const char *name_ |
| , const char_allocator &a) |
| : id(id_), age(age_), name(name_, a) |
| {} |
| }; |
| |
| //Tags |
| struct id{}; |
| struct age{}; |
| struct name{}; |
| |
| // Define a multi_index_container of employees with following indices: |
| // - a unique index sorted by employee::int, |
| // - a non-unique index sorted by employee::name, |
| // - a non-unique index sorted by employee::age. |
| typedef bmi::multi_index_container< |
| employee, |
| bmi::indexed_by< |
| bmi::ordered_unique |
| <bmi::tag<id>, BOOST_MULTI_INDEX_MEMBER(employee,int,id)>, |
| bmi::ordered_non_unique< |
| bmi::tag<name>,BOOST_MULTI_INDEX_MEMBER(employee,shm_string,name)>, |
| bmi::ordered_non_unique |
| <bmi::tag<age>, BOOST_MULTI_INDEX_MEMBER(employee,int,age)> >, |
| managed_shared_memory::allocator<employee>::type |
| > employee_set; |
| |
| 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 |
| //-> |
| |
| //Construct the multi_index in shared memory |
| employee_set *es = segment.construct<employee_set> |
| ("My MultiIndex Container") //Container's name in shared memory |
| ( employee_set::ctor_args_list() |
| , segment.get_allocator<employee>()); //Ctor parameters |
| |
| //Now insert elements |
| char_allocator ca(segment.get_allocator<char>()); |
| es->insert(employee(0,31, "Joe", ca)); |
| es->insert(employee(1,27, "Robert", ca)); |
| es->insert(employee(2,40, "John", ca)); |
| return 0; |
| } |
| //] |
| #include <boost/interprocess/detail/config_end.hpp> |