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daemon: tests: add a test for missed SIGTERM
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Authored by kevans on Oct 8 2024, 5:23 AM.
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Details

Summary

This is somewhaht hard to test reliably, but we'll give it a shot. Startup
a sleep(1) daemon with a hefty restart delay. In refactoring of daemon(8),
we inadvertently started dropping SIGTERMs that came in while we were
waiting to restart the child, so we employ the strategy:

  • Pop the child sleep(1) first
  • Wait for sleep(1) to exit (pid file truncated)
  • Pop the daemon(8) with a SIGTERM
  • Wait for daemon(8) to exit

The pidfile is specifically truncated outside of the event loop so that we
don't have a kqueue to catch it in the current model.

PR: 277959

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