92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// (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>
|
|
|
|
#if defined(BOOST_INTERPROCESS_WINDOWS) || defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
|
|
|
|
//[doc_windows_shared_memory
|
|
#include <boost/interprocess/windows_shared_memory.hpp>
|
|
#include <boost/interprocess/mapped_region.hpp>
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
#include <string>
|
|
//<-
|
|
#include "../test/get_process_id_name.hpp"
|
|
//->
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
using namespace boost::interprocess;
|
|
|
|
if(argc == 1){ //Parent process
|
|
//Create a native windows shared memory object.
|
|
//<-
|
|
#if 1
|
|
windows_shared_memory shm (create_only, test::get_process_id_name(), read_write, 1000);
|
|
#else
|
|
//->
|
|
windows_shared_memory shm (create_only, "MySharedMemory", read_write, 1000);
|
|
//<-
|
|
#endif
|
|
//->
|
|
|
|
//Map the whole shared memory in this process
|
|
mapped_region region(shm, read_write);
|
|
|
|
//Write all the memory to 1
|
|
std::memset(region.get_address(), 1, region.get_size());
|
|
|
|
//Launch child process
|
|
std::string s(argv[0]); s += " child ";
|
|
//<-
|
|
s += test::get_process_id_name();
|
|
//->
|
|
if(0 != std::system(s.c_str()))
|
|
return 1;
|
|
//windows_shared_memory is destroyed when the last attached process dies...
|
|
}
|
|
else{
|
|
//Open already created shared memory object.
|
|
//<-
|
|
#if 1
|
|
windows_shared_memory shm (open_only, argv[2], read_only);
|
|
#else
|
|
//->
|
|
windows_shared_memory shm (open_only, "MySharedMemory", read_only);
|
|
//<-
|
|
#endif
|
|
//->
|
|
|
|
//Map the whole shared memory in this process
|
|
mapped_region region(shm, read_only);
|
|
|
|
//Check that memory was initialized to 1
|
|
char *mem = static_cast<char*>(region.get_address());
|
|
for(std::size_t i = 0; i < region.get_size(); ++i)
|
|
if(*mem++ != 1)
|
|
return 1; //Error checking memory
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
//]
|
|
|
|
#else //BOOST_INTERPROCESS_WINDOWS
|
|
|
|
int main()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif //BOOST_INTERPROCESS_WINDOWS
|
|
|
|
#include <boost/interprocess/detail/config_end.hpp>
|