Re: [boost] [serialization] fast array serialization (10x speedup)

From: Matthias Troyer (troyer_at_[hidden])
Date: 2005-11-24 11:34:46

On Nov 24, 2005, at 5:24 PM, Peter Dimov wrote:

> David Abrahams wrote:
>
>> To be fair, I haven't done the analysis: are you sure your approach
>> doesn't lead to an MxN problem (for M archives and N types that need
>> to be serialized)?
>
> Yes, it does, in theory. Reality isn't that bad. For every M, the  
> archive
> author has already added the necessary overloads for every  
> "fundamental"
> type that supports optimized array operations. This leaves a number of
> user-defined types n (because the number is smaller than N), times M.
>
> In addition, even if the author of an UDT hasn't provided an  
> overload for a
> particular archive A, the user can add it himself. The m*n number  
> for a
> particular codebase is bounded, and the overloads are typically one- 
> liners.

What if the number n is infinite (e.g. all possible structs  
consisting only of fundamental types), which is what Robert calls  
"bitwise serializable"?

Matthias