utils/tracers: Modifying (simplifying) interface for ndnSIM tracers

Now most of the tracers internally keep created instances in a global
variable.  From now on, to start tracing, one needs just install a
necessary tracer, like this:

    ndn::L3RateTracer::InstallAll ("rate-trace.txt", Seconds (0.5));

Because of the change, it became possible to use the same tracers inside
python scripts.

Also, this commits contains corresponding documentation updates.
19 files changed
tree: c7c70a6229ca02795d7e204841b55f70cb70ad1b
  1. apps/
  2. bindings/
  3. docs/
  4. examples/
  5. helper/
  6. model/
  7. ndn.cxx/
  8. plugins/
  9. PyNDN/
  10. test/
  11. tools/
  12. utils/
  13. .gitignore
  14. AUTHORS
  15. LICENSE
  16. README.md
  17. VERSION
  18. wscript
README.md

To successfully compile ndnSIM, it is necessary to use a custom branch of NS-3.

This branch can be cloned from https://github.com/cawka/ns-3-dev-ndnSIM

    mkdir ndnSIM
    cd ndnSIM
    git clone git://github.com/cawka/ns-3-dev-ndnSIM.git ns-3
    git clone git://github.com/cawka/pybindgen.git pybindgen
    git clone git://github.com/NDN-Routing/ndnSIM.git ns-3/src/ndnSIM

For more information, including downloading and compilation instruction, please refer to documentation in doc/ or on http://ndnsim.net