[PATCH] Fix error when judging if process has children
roland at redhat.com
Tue Aug 10 01:32:44 UTC 2010
> There is a possibility to count a process with both CLONE_THREAD and
> CLONE_DETACHED flags set twice, but I'm doubt that such a combination of
> CLONE_ flags is real, since CLONE_DETACHED is officially no-op in kernel
> for a very long time. Maybe it would be even better to drop this
> nclone_detached completely from strace.
CLONE_DETACHED is indeed obsolete. But when it existed, CLONE_THREAD and
CLONE_DETACHED both being set was the norm. I don't think CLONE_DETACHED
really matters to strace's logic. CLONE_THREAD is what indicates that
exit_group syscalls and fatal signals will kill all sibling threads.
But one should double-check how nclone_detached is being used in strace.
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