6.4 System V IPC

• 6.4.1 Fundamental Concepts
  • IPC Identifiers
  • IPC Keys
  • The ipcs Command
  • The ipcrm Command
• 6.4.2 Message Queues
  • Basic Concepts
  • Internal and User Data Structures
    • Message buffer
    • Kernel msg structure
    • Kernel msqid_ds structure
    • Kernel ipc_perm structure
  • SYSTEM CALL: msgget()
  • SYSTEM CALL: msgsnd()
  • SYSTEM CALL: msgctl()
  • msgtool: An interactive message queue manipulator
    • Background
    • Command Line Syntax
      • Sending Messages
      • Retrieving Messages
      • Changing the Permissions (mode)
      • Deleting a Queue
    • Examples
    • The Source
• 6.4.3 Semaphores
  • Basic Concepts
  • Internal Data Structures
    • Kernel semid_ds structure
    • Kernel sem structure
  • SYSTEM CALL: semget()
  • SYSTEM CALL: semop()
  • SYSTEM CALL: semctl()
  • semtool: An interactive semaphore manipulator
    • Background
    • Command Line Syntax
      • Creating a Semaphore Set
      • Locking a Semaphore
      • Unlocking a Semaphore
      • Changing the Permissions (mode)
      • Deleting a Semaphore Set
    • Examples
    • The Source
  • semstat: A semtool companion program
• 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

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