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stop and scan all procs sharing a vmspace #1640

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stop and scan all procs sharing a vmspace #1640

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Commits on Jul 25, 2024

  1. vmspace: maintain a list of active processes 

    This will allow us to efficently act on all processes sharing a vmspace
(important with co-processes).
    @brooksdavis
    brooksdavis committed Jul 25, 2024
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  2. vmspace: add interfaces stop/resume all procs 

    stop_vmspace_proc() and resume_vmspace_proc() respectively stop and
resume all processes but curproc associated with the vmspace of a
given process.  Functionally this the same a (stop|resume)_all_proc()
except that it walks the vmspace process list rather than allproc.

For each process use a new thread_single(SINGLE_VMSPACE) which acts like
SINGLE_BOUNDRY except that like SINGLE_ALLPROC it suspends all threads
in the process and does not expect proc to be curproc.
    @brooksdavis
    brooksdavis committed Jul 25, 2024
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  3. caprevoke: stop and scan all procs sharing our vmspace 

    In addition to thread_single() on the revoking process, call
stop_vmspace_proc() to stop all other processes that share our
vmspace.  Then revoke the horders for each thread and process sharing
the vmspace.
    @brooksdavis
    brooksdavis committed Jul 25, 2024
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