[Ns-bugs] [Bug 71] New: DEBUG function tracing issue needs resolved

[bugzilla-daemon@nsnam-www.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=71

           Summary: DEBUG function tracing issue needs resolved
           Product: ns-3
           Version: pre-release
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: simulation core
        AssignedTo: ns-bugs at isi.edu
        ReportedBy: tomh at tomh.org


multicast code has raised some open questions about the use of NS_DEBUG and
possible interaction with the tracing system:

- whether NS_DEBUG should be used widely to perform function call tracing for
debugging during model development

- whether traces such as function call tracing should be hooked into the
tracing system rather than the debug system

- whether function call tracing is explicit or automated (bozo-profiler)

- format of function call tracing including whether parameters are included and
also class namesaaa

- whether more granularity (per-node) is needed in filtering NS_DEBUGs printing
out

- whether NS_DEBUG messages should print out simulation time and possibly node
or object identifiers

- whether NS_DEBUG needs a few logging levels such as syslog warn, info, etc. 
For instance:  1: function call/signature tracing, 2: return values, 3:
internal high-level logic of a routine such as an algorithm, 4:  logic inside
for loops, etc.

Quote from Craig:  "Assume for a moment that a debug trace facility is very
useful.  We
currently have one based on macros with an on-off selector.  We also have a
very powerful low-level tracing subystem.  Does it make sense to integrate
the existing debug print / trace functionality into the tracing subsystem to
leverage some of the flexibility inherent in that system?"
"


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