tree 4e80e679828c82af1807a71d9acd723f99cbefda
parent 08c891fcb6ea1bf66e6d4619273765a644605dfc
author Sameer Agarwal <sameeragarwal@google.com> 1359750173 -0800
committer Sameer Agarwal <sameeragarwal@google.com> 1360141238 -0800

Expand reporting of timing information.

1. Add an ExecutionSummary object to record execution
   information about Ceres objects.
2. Add an EventLogger object to log events in a function call.
3. Add a ScopedExecutionTimer object to log times in ExecutionSummary.
4. Instrument ProgramEvaluator and all the linear solvers
   to report their timing statistics.
5. Connect the timing statistics to Summary::FullReport.
6. Add high precision timer on unix systems using
   gettimeofday() call.
7. Various minor clean ups all around.

Change-Id: I5e09804b730b09535484124be7dbc1c58eccd1d4