Difference between revisions of "CPGuide - Pipes"

Revision as of 03:00, 27 March 2020

Communication between processes is valuable in a multitasking operating system to enable concurrent processes to work together. Pipes are one of three forms of interprocess communication (IPC), the other forms of IPC being semaphores and queues.

This chapter describes how to create, manage, and use pipes. Pipes enable two or more processes to communicate as if they were reading from and writing to a file.

The following topics are related to the information in this chapter:

• Memory (shared memory)
• Program execution and control
• Semaphores
• Queues

About Pipes

Unnamed Pipes

Named Pipes

Server-Client Communications Using Named Pipes

Steps in Managing Server-Client Transactions

Preparing a Named Pipe for a Client

Facilitating Transaction Processing

Coordinating Access to a Local Named Pipe with Semaphores

Using Unnamed Pipes

Creating Unnamed Pipes

Reading from and Writing to Unnamed Pipes

Redirecting Standard I/O for Child Processes

Using Named Pipes

Creating Named Pipes

Opening Named Pipes

Reading from Named Pipes

Writing to Named Pipes

Synchronizing Named Pipe Dialogs

Determining Pipe Status

Examining the Contents of Named Pipes

Closing Named Pipes