1 //////////////////////////////////////////////////////////////////////////////
2 //
3 // (C) Copyright Ion Gaztanaga 2006-2012. Distributed under the Boost
4 // Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 //
7 // See http://www.boost.org/libs/interprocess for documentation.
8 //
9 //////////////////////////////////////////////////////////////////////////////
10 #include <boost/interprocess/detail/config_begin.hpp>
11 #include <boost/interprocess/detail/workaround.hpp>
12
13 #if defined(BOOST_INTERPROCESS_WINDOWS) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
14
15 //[doc_windows_shared_memory
16 #include <boost/interprocess/windows_shared_memory.hpp>
17 #include <boost/interprocess/mapped_region.hpp>
18 #include <cstring>
19 #include <cstdlib>
20 #include <string>
21 //<-
22 #include "../test/get_process_id_name.hpp"
23 //->
24
main(int argc,char * argv[])25 int main(int argc, char *argv[])
26 {
27 using namespace boost::interprocess;
28
29 if(argc == 1){ //Parent process
30 //Create a native windows shared memory object.
31 //<-
32 #if 1
33 windows_shared_memory shm (create_only, test::get_process_id_name(), read_write, 1000);
34 #else
35 //->
36 windows_shared_memory shm (create_only, "MySharedMemory", read_write, 1000);
37 //<-
38 #endif
39 //->
40
41 //Map the whole shared memory in this process
42 mapped_region region(shm, read_write);
43
44 //Write all the memory to 1
45 std::memset(region.get_address(), 1, region.get_size());
46
47 //Launch child process
48 std::string s(argv[0]); s += " child ";
49 //<-
50 s += test::get_process_id_name();
51 //->
52 if(0 != std::system(s.c_str()))
53 return 1;
54 //windows_shared_memory is destroyed when the last attached process dies...
55 }
56 else{
57 //Open already created shared memory object.
58 //<-
59 #if 1
60 windows_shared_memory shm (open_only, argv[2], read_only);
61 #else
62 //->
63 windows_shared_memory shm (open_only, "MySharedMemory", read_only);
64 //<-
65 #endif
66 //->
67
68 //Map the whole shared memory in this process
69 mapped_region region(shm, read_only);
70
71 //Check that memory was initialized to 1
72 char *mem = static_cast<char*>(region.get_address());
73 for(std::size_t i = 0; i < region.get_size(); ++i)
74 if(*mem++ != 1)
75 return 1; //Error checking memory
76 return 0;
77 }
78 return 0;
79 }
80 //]
81
82 #else //BOOST_INTERPROCESS_WINDOWS
83
main()84 int main()
85 {
86 return 0;
87 }
88
89 #endif //BOOST_INTERPROCESS_WINDOWS
90
91 #include <boost/interprocess/detail/config_end.hpp>
92