Frequently Asked Questions about Linux OK

Q: Why use POSIX Interface on a POSIX based OS?
A: Benefits only provided by POSIX Interface from Cross-OS:

  • Includes OS Abstractor APIs
    – Allows development of highly portable applications
  • True Portability
    – Code written for an older version of POSIX will run on a newer version
    – Code written for one POSIX type such as UNIX or Linux will run on all POSIX types
  • Development Flexibility
    – OS features beyond the POSIX standard provide more development features which are missing in POSIX
  • Adds Performance, OS Hardening and Reliability
    – Maximizes use of compile-time translations
    – Maximizes use of low-level OS functions
    – Zero data copy of messages – OS Abstractor APIs
    – Static allocation of control blocks
    – Scalability at component & feature levels
    – Real-time enhancements and other safety critical OS features are added to your OS
    – Protect resources or optionally share them with other applications and processes
    – Unique process features enables independent development of complex and multiple applications
    – Dynamic application reconfiguration and restart
    – Provides Task Pooling feature to reuse task envelopes
    – Every POSIX distribution offers different features, our APIs will fill in the missing pieces to give you the “best of the best”

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