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Ran 05 Jun 2019 07:40PM UTC

Files 387

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Committed 05 Jun 2019 07:18PM UTC coverage: 67.428% (+0.008%) from 67.42%

Job # TEST_AIIDA_BACKEND=sqlalchemy TEST_TYPE="tests"

Build Type

push

travis-ci

Committed by

sphuber

Commit Message

Unbind interrupt signal handlers as soon as process function terminates

The `run_get_node` method of process functions attaches a `kill_process`
handler to interrupt signals, such that when the funtion process is
interrupted during execution, it is properly cleaned up, for example by
setting the process state on the node to `Killed`. These handlers were,
however, not properly unbound after the process was terminated and so
would be triggered even after the process instance was no longer alive.
This would cause the `kill_process` handler to hang. In the case of a
daemon runner, this would prevent the python process from shutting down.
This manifested itself in `verdi daemon stop` timing out if one of the
daemon runners had run just a single process function. Note that the
previous commit already fixed this problem in a different way, by not
even attaching the interrupt handlers for process function in the first
place. But the reasoning for that is different.

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