We have now began to see how multiple processes may be running on a machine and maybe be controlled (spawned by fork() by one of our programs.
In numerous applications there is clearly a need for these processes to communicate with each exchanging data or control information. There are a few methods which can accomplish this task. We will consider:
- Pipes
- Signals
- Message Queues
- Semaphores
- Shared Memory
- Sockets
