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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_multi_index
- #include <boost/interprocess/managed_shared_memory.hpp>
- #include <boost/interprocess/allocators/allocator.hpp>
- #include <boost/interprocess/containers/string.hpp>
- //<-
- //Shield against external warnings
- #include <boost/interprocess/detail/config_external_begin.hpp>
- //->
- #include <boost/multi_index_container.hpp>
- #include <boost/multi_index/member.hpp>
- #include <boost/multi_index/ordered_index.hpp>
- //<-
- #include <boost/interprocess/detail/config_external_end.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>, bmi::member<employee,int,&employee::id> >,
- bmi::ordered_non_unique<
- bmi::tag<name>, bmi::member<employee,shm_string,&employee::name> >,
- bmi::ordered_non_unique
- <bmi::tag<age>, bmi::member<employee,int,&employee::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;
- //<-
- (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
- //->
- //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>
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