6.4.4 Shared Memory

• Basic Concepts
• Internal and User Data Structures
  • Kernel shmid_ds structure
• SYSTEM CALL: shmget()
• SYSTEM CALL: shmat()
• SYSTEM CALL: shmctl()
• SYSTEM CALL: shmdt()
• shmtool: An interactive shared memory manipulator
  • Background
  • Command Line Syntax
    • Writing strings to the segment
    • Retrieving strings from the segment
    • Changing the Permissions (mode)
    • Deleting the segment
  • Examples
  • The Source