[issue28779] set_forkserver_preload() can crash the forkserver if preloaded module instantiate multiprocessing classes
Davin Potts
report at bugs.python.org
Tue Nov 29 00:21:01 EST 2016
Davin Potts added the comment:
I don't see any negative consequences for the helpers if the `force=True` is made in spawn.prepare's invocation of set_start_method(). In tracing backwards to figure out why this wasn't done already, it seems unchanged since sbt's patch in issue18999.
This change may impact users of execution-bundling tools like cx-freeze -- issue22255 suggests this could make freezing things easier for some. I admit I don't fully appreciate the details of how these tools are implemented.
> (that said, if you think this is out of scope for this issue, I can revert that part of the patch)
Given the nature of BaseContext's implementation, I don't see a problem with keeping your change. In case I was missing something, I spent some time searching for code possibly depending upon BaseContext.set_start_method's calling arguments but turned up nothing (no surprises). It feels cleaner to update it to be in sync with DefaultContext.
Overall, LGTM the way you have it.
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