X Window System Internals

X Window System Internals

by Christos Karayiannis

Introduction
1 The X Client side and the X Client-Server connection
2 The X Client - X Server interaction at the X Protocol layer
3 The X Server side
- 3.1 Overview
- 3.2 X Server main() routine
  - 3.2.1 CreateWellKnownSockets()
  - 3.2.2 InitOutput()
            ▫ 3.2.2.1 Parsing the xorg.conf file (Part 1)
            ▫ 3.2.2.2 Parsing the xorg.conf file (Part 2)
            ▫ 3.2.2.3 General PCI probe
            ▫ 3.2.2.4 Configuration
            ▫ 3.2.2.5 Module Loading
                          · 3.2.2.5.1 Quiz: which is the address of the 'Setup' function? (Hint! gdb)      Hands-on!
                          · 3.2.2.5.2 The Virtual Address space of the X Xerver and the modules      Hands-on!
            ▫ 3.2.2.6 Driver Processing
            ▫ 3.2.2.7 Screen Matching
            ▫ 3.2.2.8 Driver's PreInit(), MGAPreInit(), is called
            ▫ 3.2.2.9 Further initialization
            ▫ 3.2.2.10 AddScreen()
            ▫ 3.2.2.11 MGAScreenInit()
            ▫ 3.2.2.12 fbScreenInit()
            ▫ 3.2.2.13 Screen functions called by main() after InitOutput()
  - 3.2.3 InitInput()
  - 3.2.4 InitAndStartDevices()
  - 3.2.5 Dispatch()
            ▫ 3.2.5.1 ProcessInputEvents()
            ▫ 3.2.5.2 WaitForSomething()
            ▫ 3.2.5.3 Read and Process Client Requests
            ▫ 3.2.5.4 FlushAllOutput()
            ▫ 3.2.5.5 EstablishNewConnections()
4 The X Server - Video interaction
- 4.1 X Server and the Video card
- 4.2 X Server and the PCI bus
  - 4.2.1 The role of the PCI
  - 4.2.2 Case Study: Linux
  - 4.2.3 How the X Server code uses PCI
  - 4.2.4 PCI Experiments part I: Inspecting Configuration Space variables Hands-on!
  - 4.2.5 PCI Experiments part II: The Video Driver used by the system Hands-on!
  - 4.2.6 PCI Experiments part III: The Video Driver memory regions Hands-on!
5 The X Server - Input devices interaction
- 5.1 Overview
6 X Events
- 6.1 Overview
7 X Request Dispatching
- 7.1 Case study: XMapWindow()
  - 7.1.1 miComputeClips()

Copyright © 2009 Christos Karayiannis