General EXecutive - Design

Design

VxWorks is designed for use in embedded systems.

Some of the features of the current OS are:

  • Multitasking kernel with preemptive and round-robin scheduling and fast interrupt response
  • Native 64-bit operating system (only one 64-bit architecture supported: x86-64). Data model: LP64.
  • User-mode applications ("Real-Time Processes", or RTP) isolated from other user-mode applications as well as the kernel via memory protection mechanisms.
  • SMP and AMP support
  • Error handling framework
  • Binary, counting, and mutual exclusion semaphores with priority inheritance
  • Local and distributed message queues
  • POSIX PSE52 certified conformity in user-mode execution environment
  • File systems: High Reliability File System (HRFS), FAT-based file system (DOSFS), Network File System (NFS)
  • IPv6 networking stack

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