1
//////////////////////////////////////////////////////////////////////////////
3
// (C) Copyright Ion Gaztanaga 2006-2011.
4
// Distributed under the Boost Software License, Version 1.0.
5
// (See accompanying file LICENSE_1_0.txt or copy at
6
// http://www.boost.org/LICENSE_1_0.txt)
8
// See http://www.boost.org/libs/interprocess for documentation.
10
//////////////////////////////////////////////////////////////////////////////
11
#include <boost/interprocess/detail/config_begin.hpp>
12
#include <boost/interprocess/detail/workaround.hpp>
14
//[doc_shared_ptr_explicit
15
#include <boost/interprocess/managed_shared_memory.hpp>
16
#include <boost/interprocess/smart_ptr/shared_ptr.hpp>
17
#include <boost/interprocess/allocators/allocator.hpp>
18
#include <boost/interprocess/smart_ptr/deleter.hpp>
21
#include "../test/get_process_id_name.hpp"
24
using namespace boost::interprocess;
26
//This is type of the object we want to share
30
typedef managed_shared_memory::segment_manager segment_manager_type;
31
typedef allocator<void, segment_manager_type> void_allocator_type;
32
typedef deleter<MyType, segment_manager_type> deleter_type;
33
typedef shared_ptr<MyType, void_allocator_type, deleter_type> my_shared_ptr;
37
//Remove shared memory on construction and destruction
42
shm_remove() { shared_memory_object::remove(test::get_process_id_name()); }
43
~shm_remove(){ shared_memory_object::remove(test::get_process_id_name()); }
46
shm_remove() { shared_memory_object::remove("MySharedMemory"); }
47
~shm_remove(){ shared_memory_object::remove("MySharedMemory"); }
58
managed_shared_memory segment(create_only, test::get_process_id_name(), 4096);
61
managed_shared_memory segment(create_only, "MySharedMemory", 4096);
66
//Create a shared pointer in shared memory
67
//pointing to a newly created object in the segment
68
my_shared_ptr &shared_ptr_instance =
69
*segment.construct<my_shared_ptr>("shared ptr")
70
//Arguments to construct the shared pointer
71
( segment.construct<MyType>("object to share")() //object to own
72
, void_allocator_type(segment.get_segment_manager()) //allocator
73
, deleter_type(segment.get_segment_manager()) //deleter
75
assert(shared_ptr_instance.use_count() == 1);
77
//Destroy "shared ptr". "object to share" will be automatically destroyed
78
segment.destroy_ptr(&shared_ptr_instance);
83
#include <boost/interprocess/detail/config_end.hpp>