scripts/pkgbuilder.py: assign each subprocess a process group #4177
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
When pkgbuilder.py is terminated with SIGINT (ie. ctrl-c), or exits
immediately due to a failed job, it is sometimes possible for child
subprocesses (ie. build tasks) to remain alive and continue running
in the background.
To fix this, assign each subprocess a new process group identifier,
and capture the pid of each child subprocess so that on shutdown we
can kill the entire child process group (ie. kill the child subprocess,
and all subprocesses the child subprocess may have created) for any
builder processes that are still running.