Linux interprocess communication Programming-1

I. Overview of interprocess communication:

1. Purpose: Why do interprocess communication?

1) Data transfer: One process needs to send his data to another process.

2) resource sharing: coordinating shared resources.

3) Notification event: A process needs to send a message to another or a set of processes to notify them that an event has occurred.

4) Process Control

2. Development

The Linux interprocess communication (IPC) is developed from the following parts:

1) UNIX Inter-process communication

2) Inter-process communication based on System V (System 5 is one of many versions of the UNIX operating system)

3) POSIX interprocess communication (POSIX portable Operating system interface)

3. Classification

The ways in which Linux uses communication between processes now include:

1) piping (pipe) and well-known piping (FIFO)

2) signal (signal)

3) Message Queuing

4) Shared memory

5) Signal Volume

6) socket (socket)