IPC between Python Scripts

[digitaldanny]

Goal

Create a FIFO module that can share data between two separate python modules.

Notes

• According to this link, there is no shared RAM between two separate instances of python interpreters.
• Possibly create temporary files to read from and then immediately delete (pickle library might help with this). Will have to create a locking mechanic to keep processes from reading and writing to the file at the same time.
• Use the multithreading library to create sockets that the reader can listen to and the writer can send to. Use this link as a reference.

[digitaldanny]

Check this link if we decide later on that we should switch to lower level control of the sockets than using Listeners and Clients from the multithreading package. In this forum they talk about sending and receiving binary rather than strings of data, which could be useful if we see a lot of latency getting data from the controller to Unity.

[digitaldanny]

Try running all the modules as a single processes. If this doesn't work, it might be easier to switch over to using the multithreading Python module instead of running multiple instances of python.