pointers - shared C++ object through memory -

i have quick question familiar inter-process communication.

situation

• i have program (program a) can add code to, limited. main program generate lot of data.
• the way data formulated limited, create second program (program b) , hence need data b. , cause run functions no return value.
• i aware of named pipes, feel might bulky? - not sure though - have instance following concerns (may unfounded):
  1. data flow => convert binary -> place data in memory -> server read -> convert string -> through switch statement determine requested -> requested -> convert binary -> place in memory -> read client , convert string / acceptable format.
  2. it has use switch statements on both sides , if want different format of info other string, need take consideration
  3. one message might have wait complete, might slower during lot of calls @ same time? - not sure though
• other inter process communication methods has same problem.

• better solution think create "object" - class. , share object memory address between programs, thereby theoretically "merging" , b then:

  1. there no problem encode , decode issues etc
  2. data requested / invoked through calling function.
  3. the function return proper type , no need establish correct type (i.e. bool / int / string / double etc)

  i understand has several problems, i.e. if object gets removed memory location main / program accessing it.

question

• what best way solve problems:
• is there invoke option in c++ allow me write , read memory address? @ moment:
  1. i can access same object between , b, can't write / read throw exception. can through simple invoke perhaps read / write object?
  2. i aware of writeprocessmemory function - not want - i.e. don't want change memory values, merely access data / invoke actions b perform.
• is there simple , easy way of doing this? aware of called boost, don't know - best option? -> i.e. should investigate best solution?

thank in advance advise on issue.

boost.interprocess had many ways share data between processes, 1 of shared_memory

example taken boost, program acts server or client same memory object (depending on whether argument given or not)

include <boost/interprocess/shared_memory_object.hpp> #include <boost/interprocess/mapped_region.hpp> #include <cstring> #include <cstdlib> #include <string>  int main(int argc, char *argv[]) {    using namespace boost::interprocess;     if(argc == 1){  //parent process       //remove shared memory on construction , destruction       struct shm_remove       {          shm_remove() { shared_memory_object::remove("mysharedmemory"); }          ~shm_remove(){ shared_memory_object::remove("mysharedmemory"); }       } remover;        //create shared memory object.       shared_memory_object shm (create_only, "mysharedmemory", read_write);        //set size       shm.truncate(1000);        //map whole shared memory in process       mapped_region region(shm, read_write);        //write memory 1       std::memset(region.get_address(), 1, region.get_size());        //launch child process       std::string s(argv[0]); s += " child ";       if(0 != std::system(s.c_str()))          return 1;    }    else{       //open created shared memory object.       shared_memory_object shm (open_only, "mysharedmemory", read_only);        //map whole shared memory in process       mapped_region region(shm, read_only);        //check memory initialized 1       char *mem = static_cast<char*>(region.get_address());       for(std::size_t = 0; < region.get_size(); ++i)          if(*mem++ != 1)             return 1;   //error checking memory    }    return 0; }