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Signals Review Questions

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Anon edited this page Jan 1, 2017 · 3 revisions

Topics

  • Signals
  • Signal Handler Safe
  • Signal Disposition
  • Signal States
  • Pending Signals when Forking/Exec
  • Signal Disposition when Forking/Exec
  • Raising Signals in C
  • Raising Signals in a multithreaded program

Questions

  • What is a signal?
  • How are signals served under UNIX? (Bonus: How about Windows?)
  • What does it mean that a function is signal handler safe
  • What is a process Signal Disposition?
  • How do I change the signal disposition in a single threaded program? How about multithreaded?
  • Why sigaction vs signal?
  • How do I asynchronously and synchronously catch a signal?
  • What happens to pending signals after I fork? Exec?
  • What happens to my signal disposition after I fork? Exec?

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