On 11 Oct 2012, at 16:11, dhkblas...@zeelandnet.nl wrote:
On 11 okt '12, Jonas Maebe wrote:
No. You really should write the fields one by one. Yes,
it's slower. That's the cost of portability. You can always
optimize by
first writing them to a buffer and then writing the buffer in one go.
Sorry I keep asking questions, but why write them one by one? If
I would store the offset each variable has at the time of writing
(only
need to do one time per record type), I could easily make the loading
work (even if the ABI changes when the file is read back). What makes
you prefer writing the variables one by one over once at a time?
I always prefer simple techniques over elaborate strategies aimed at
optimizing things, especially if it's not clear that they will ever be
the performance bottleneck in the first place. You're moreover trading
space (storing all the offsets) for cpu operations here, and I/O is
generally two or more orders of a magnitude slower than moving data in
memory.
Jonas
_______________________________________________
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/mailman/listinfo/fpc-pascal
