On Fri, Aug 29, 2008 at 10:17 AM, Robert Ramey <ramey@rrsd.com> wrote:
We have a similar requirement for a static library of factories for serialisation (in our case for O/RM, but the principle is the same) and when I put all of this together it seemed that the only way to do it reliably was to use a read/write mutex around accesses to the static data. This way most of the reads can still happen in parallel with the very occasional writes taking exclusive control of the structure.
[snip]
It would be possible to make an archive adaptor for which could be added to any archive (through multiple derivation) which would automate the semaphore aquisition. If all your code used these enhanced archives (and you dll loading/unloading was similarly enhanced), you could "fire and forget" with almost no performance penalty as the semaphores would be accessed only once per archve open/close rather than for every access.
Sorry, if I'm being too late, but I second that request. Why wouldn't the library provide such an adapter? I would really like to see the library that "just works" (tm), out of box. If not with configuration macros, but at least with a specific toolset. I am sure there are cases where performance matters less than thread safety and plugin support.