Interprocess communication

When several threads run concurrently, as in typical realtime multitasking environments, the OS must provide mechanisms to allow them to communicate with each other.

Interprocess communication (IPC) is the key to designing an application as a set of cooperating processes in which each process handles one well-defined part of the whole.

The OS provides a simple but powerful set of IPC capabilities that greatly simplify the job of developing applications made up of cooperating processes. For more information, see the Interprocess Communication (IPC) chapter.