Flat profile:

Each sample counts as 0.01 seconds.
  %   cumulative   self              self     total
 time   seconds   seconds    calls  ms/call  ms/call  name
 41.47      0.17     0.17       91     1.87     3.96  Duplo::process(SourceFile*, SourceFile*, std::ostream&) (Duplo.cpp:90)
 25.62      0.28     0.11 12763799     0.00     0.00  SourceLine::equals(SourceLine*) (SourceLine.h:41)
 12.20      0.33     0.05 12803564     0.00     0.00  std::vector<SourceLine*, std::allocator<SourceLine*> >::operator[](unsigned long) const (stl_vector.h:785)
  8.54      0.36     0.04 12803564     0.00     0.00  SourceFile::getLine(int) const (SourceFile.h:62)
  4.88      0.38     0.02    11336     0.00     0.00  HashUtil::MD5_memset(unsigned char*, int, unsigned int) (HashUtil.cpp:215)