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1 | ////////////////////////////////////////////////////////////////////////////// |
2 | // | |
3 | // (C) Copyright Ion Gaztanaga 2006-2012. | |
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) | |
7 | // | |
8 | // See http://www.boost.org/libs/interprocess for documentation. | |
9 | // | |
10 | ////////////////////////////////////////////////////////////////////////////// | |
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7c673cae FG |
12 | #include <boost/interprocess/detail/workaround.hpp> |
13 | ||
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> | |
19 | #include <cassert> | |
20 | //<- | |
21 | #include "../test/get_process_id_name.hpp" | |
22 | //-> | |
23 | ||
24 | using namespace boost::interprocess; | |
25 | ||
26 | //This is type of the object we want to share | |
27 | class MyType | |
28 | {}; | |
29 | ||
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; | |
34 | ||
35 | int main () | |
36 | { | |
37 | //Remove shared memory on construction and destruction | |
38 | struct shm_remove | |
39 | { | |
40 | //<- | |
41 | #if 1 | |
42 | shm_remove() { shared_memory_object::remove(test::get_process_id_name()); } | |
43 | ~shm_remove(){ shared_memory_object::remove(test::get_process_id_name()); } | |
44 | #else | |
45 | //-> | |
46 | shm_remove() { shared_memory_object::remove("MySharedMemory"); } | |
47 | ~shm_remove(){ shared_memory_object::remove("MySharedMemory"); } | |
48 | //<- | |
49 | #endif | |
50 | //-> | |
51 | } remover; | |
52 | //<- | |
53 | (void)remover; | |
54 | //-> | |
55 | ||
56 | //<- | |
57 | #if 1 | |
58 | managed_shared_memory segment(create_only, test::get_process_id_name(), 4096); | |
59 | #else | |
60 | //-> | |
61 | managed_shared_memory segment(create_only, "MySharedMemory", 4096); | |
62 | //<- | |
63 | #endif | |
64 | //-> | |
65 | ||
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 | |
74 | ); | |
75 | assert(shared_ptr_instance.use_count() == 1); | |
76 | ||
77 | //Destroy "shared ptr". "object to share" will be automatically destroyed | |
78 | segment.destroy_ptr(&shared_ptr_instance); | |
79 | ||
80 | return 0; | |
81 | } | |
82 | //] | |
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