[DynInst_API:] Snippets that need libs that the mutatee does not reference

[Wayne Motycka <wmotycka@xxxxxxxxxxx>]

The snippet examples seem to fixate on opening file handles destinations for
output, but given the high cost of doing disk I/O, I'd like to instead send
these messages down a TCP/IP socket.  From my limited view I believe that I'd
need to somehow attach the appropriate libraries to the binary and then perform
the findFunction() mechanism to locate the socket() and other functions
necessary to open/write/close the socket in the snippet.

The question is, am I correct in my expectations (needing to attach libs), and
more importantly, is there a better mechanism that would give me low performance
cost that would allow me to emit information from a snippet?

FYI, I'm trying to implement a execution path tracing tool that will indicate
the edges/blocks traversed/visited in a way that identifies what
file:function:edge/block was executed and simple counters aren't really
enough to maintain order of edge traversal.

-Wayne