IPC between Java and C++

Question

My goal here is to make two separate applications (one in Java and other in C++, both on the same machine) read from the same SQLite database. The C++ implementation already wor

Answer 1

Not sure about the performance you need over the IPC but there are several approaches:

1. use sockets
2. use pipes
3. use memorymappedfiles (using memorymappedfiles you will have a performance gain)

In either case you will need a serializer/deserializer for the objects(data) you pass from java to c++ and viceversa.

Depending on the data format you might need serializer/deserializer only on Java side. (e.g. you send out binary data that C++ will read without needing to decode it anymore). A good tutorial on how to use memorymapped file in java can be found here and in C++ you need to use mmap function.