Memory Mapping

This module implements basic server-client memory mapping functionality

At a Glance

• MappedFile
• ServerMappedFile

Example

A typical scenario would be to have a server process map a region of its own memory so that other processes can access it:

// server program
void main()
{
  // map a block of 100MB
  ServerMappedFile* mapped_file = new ServerMappedFile();
  mapped_file->init("my_file", 100*1024*1024, my_buffer);

  // and loop until somebody tell us to stop
  while (exit_signal() == false) {}

  // delete the mapped_file object, releasing the memory mapping
  delete mapped_file;
}

and a client read that mapped file:

// client program
void main()
{
  // map the shared block in the client's memory space
  MappedFile mapped_file;
  void* mapped_buffer = mapped_file.init("my_file", 100*1024*1024);

  // and do something with it
  do_something( mapped_buffer );
}

Technical Overview

See the Memory Mapping module documentation.