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By "signals" I mean the age-old unix signals like SIGSTOP, SIGQUIT, SIGPWR, SIGALRM, SIGUSR1, etc.

Which ones does the Blender process not ignore, and how does it react to each? I'm curious about signals sent to Blender by the operating system, user, or other software.

I don't recall seeing mention anywhere in any documentation.

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  • $\begingroup$ curious to know, is there some signal you were looking to use that wasn't working as expected? $\endgroup$ – ideasman42 Jul 13 '13 at 2:19
  • $\begingroup$ What would the advantages be of SIGTSTP over SIGSTOP? (which works) $\endgroup$ – ideasman42 Jul 15 '13 at 7:49
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Here are the signals Blender currently uses.

  • SIGINT (Ctrl+C in the terminal) is used to cancel renders.
  • SIGFPE can be enabled by passing --debug-fpe to Blender, we use the for finding errors while debugging.
  • SIGSEGV writes a crash log in the temp directory, unless --disable-crash-handler argument is passed.
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