| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (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_shared_ptr_explicit |
| #include <boost/interprocess/managed_shared_memory.hpp> |
| #include <boost/interprocess/smart_ptr/shared_ptr.hpp> |
| #include <boost/interprocess/allocators/allocator.hpp> |
| #include <boost/interprocess/smart_ptr/deleter.hpp> |
| #include <cassert> |
| //<- |
| #include "../test/get_process_id_name.hpp" |
| //-> |
| |
| using namespace boost::interprocess; |
| |
| //This is type of the object we want to share |
| class MyType |
| {}; |
| |
| typedef managed_shared_memory::segment_manager segment_manager_type; |
| typedef allocator<void, segment_manager_type> void_allocator_type; |
| typedef deleter<MyType, segment_manager_type> deleter_type; |
| typedef shared_ptr<MyType, void_allocator_type, deleter_type> my_shared_ptr; |
| |
| 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; |
| |
| //<- |
| #if 1 |
| managed_shared_memory segment(create_only, test::get_process_id_name(), 4096); |
| #else |
| //-> |
| managed_shared_memory segment(create_only, "MySharedMemory", 4096); |
| //<- |
| #endif |
| //-> |
| |
| //Create a shared pointer in shared memory |
| //pointing to a newly created object in the segment |
| my_shared_ptr &shared_ptr_instance = |
| *segment.construct<my_shared_ptr>("shared ptr") |
| //Arguments to construct the shared pointer |
| ( segment.construct<MyType>("object to share")() //object to own |
| , void_allocator_type(segment.get_segment_manager()) //allocator |
| , deleter_type(segment.get_segment_manager()) //deleter |
| ); |
| assert(shared_ptr_instance.use_count() == 1); |
| |
| //Destroy "shared ptr". "object to share" will be automatically destroyed |
| segment.destroy_ptr(&shared_ptr_instance); |
| |
| return 0; |
| } |
| //] |
| #include <boost/interprocess/detail/config_end.hpp> |