I want to share a dynamic array of characters between two processes using
Boost Shared Memory. I use the following two pieces of code to do that:
*Producer Process:*
char *data;unsigned int share_length;unsigned int offset;
std::string data_to_share(data + offset, data + offset + share_length);
boost::interprocess::managed_shared_memory
managed_shm(boost::interprocess::create_only,
"SomeName",
1024*1024);typedef boost::interprocess::allocator
CharAllocator;typedef boost::interprocess::basic_string my_string;
managed_shm.construct("DataToShare")(data_to_share.c_str(),
managed_shm.get_segment_manager());
*Consumer Process:*
boost::interprocess::managed_shared_memory
managed_shm(boost::interprocess::open_read_only, "SomeName");typedef
boost::interprocess::allocator
CharAllocator;typedef boost::interprocess::basic_string my_string;
std::pair data =
managed_shm.find("DataToShare");
cout << "Data Size=" << data.first->length() << endl;
The problem is when I try to print the length of the DataToShare in the
Consumer Process it is wrong, so what is the problem in my code, is it in
the Producer Part since I am doing data_to_share.c_str()which is a
std::string type instead of of my_string type?
*Possible Answer:*
I believe the answer to my question is, converting std::string into
my_string type. so can anyone tell me how to do that?
