[Bug dyninst/14706] New: Support multiple target processes in stapdyn

["jistone at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14706

             Bug #: 14706
           Summary: Support multiple target processes in stapdyn
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: dyninst
        AssignedTo: systemtap@sourceware.org
        ReportedBy: jistone@redhat.com
    Classification: Unclassified


We should support multiple target processes in stapdyn.  This primarily means
following fork/exec process children from the initial target, but it could also
mean allowing multiple -c/-x targets, if we want.

We'll need shared memory between targets, at least for global variables
(including per-thread stats memory, so anyone can aggregate).  Any events that
are not process specific (e.g. begin, end, timers) can run in the stapdyn
process, like they are now for the case with no target process.

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