Hi,
Thanks for the quick response.
>
> the real front ends here are only libmysql, libmysql_r and libmysqld
>
> tests, mysql-test and client just use these.
[>>>] Does this mean that client is at a layer above libmysql ,
libmysql_r and libmysqld?
> > 1. There are 3 versions of sql_string.h : client/sql_string.h,
> > libmysqld/sql_string.h and sql/sql_string.h. Do we need 3 versions?
>
> likely just symlinks.
[>>>] Iam analysing the sourc-code of mysql-4.1.12. The files
sql/sql_string.h and client/sql_string.h are actually different. Are
they just symlinks in the latest version?
[>>>]
>
> > 3. There are function calls from sql (in layer 2) to libmysqld (in
> > layer 3) . For example function "query_cache_end_of_result" in file
> > sql/sql_cache.cc calls the function "emb_count_querycache_size" in
file
> > libmysqld/emb_qcache.cc. Is this intended?
>
> probably in #ifdef
[>>>] Yes. It is in #ifdef. So it is okay for sql to call libmysqld?
That should not be considered as a call to layer above?
[>>>]
Do you know if there has been a major structural change in any of the
versions? Also SQL directory seems to be too big are there any plans to
split it up?
Thanks
Girish
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