Re: [Xen-devel] [RFC PATCH 0/7] libxl: fork: Selective reaping

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Jackson writes ("[RFC PATCH 0/7] libxl: fork: Selective reaping"):
> libvirt reaps its children synchronously and has no central pid
> registry and no dispatch mechanism.  libxl does have a pid registry so
> can provide a selective reaping facility, but that is not currently exposed.
> 
> NB that I have compiled this series but I have NOT EXECUTED IT.
> The most plausible test environment is a suitably modified libvirt.
> 
>  1/7 libxl: fork: Break out checked_waitpid
>  2/7 libxl: fork: Break out childproc_reaped_ours
>  3/7 libxl: fork: Clarify docs for libxl_sigchld_owner
>  4/7 libxl: fork: assert that chldmode is right
>  5/7 libxl: fork: Provide libxl_childproc_sigchld_occurred
>  6/7 libxl: fork: Provide ..._always_selective_reap
>  7/7 libxl: fork: Provide LIBXL_HAVE_SIGCHLD_SELECTIVE_REAP

I should say, to Jim: I think that with this series applied, simply
having libvirt pass libxl_sigchld_owner_libxl_always_selective_reap
should be sufficient for everything to work.

Ian.

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