id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
9116,Binary serialization: bitwise copying should also apply to single POD objects (it now only seems to work on arrays/collections),Louis Zanella <louis.zanella@…>,Robert Ramey,"I'm trying to find the best settings for fast binary serialization of big POD objects. My tests indicate that, for a structure tagged as bitwise serializable, I only get better performance on arrays and vectors, not on individual objects.

For instance, say I have a structure made up only of POD types:

{{{
struct BigStruct
{
  double    m1;
  long long m2;
  float     m3;
  // ...
  bool      m499;
  short     m500;
};

namespace boost
{
  namespace serialization
  {
    template <class Archive>
    void serialize(Archive& ioArchive, BigStruct& ioStruct, const unsigned int iVersion)
    {
      ioArchive & ioStruct.m1;
      ioArchive & ioStruct.m2;
      ioArchive & ioStruct.m3;
      // ...
      ioArchive & ioStruct.m499;
      ioArchive & ioStruct.m500;
    }
  }
}

#include <boost/serialization/is_bitwise_serializable.hpp>
BOOST_IS_BITWISE_SERIALIZABLE(BigStruct);
}}}

Then, serializing a single !BigStruct object takes considerably (at least 5 times) longer than serializing an array of 1 !BigStruct object.",Bugs,new,To Be Determined,serialization,Boost 1.53.0,Optimization,,"serialization, binary, bitwise, POD",