On Fri, Oct 17, 2008 at 08:36:56PM +0200, Olivier Guilyardi wrote: > I don't see why it's fragile. There's no reason for the compiler to modify > rb->read_ptr if not asked to. Buf if that's the case, because of some sort of > dark voodoo optimization, then we could use a temporary variable to hold the > intermediary result. Better, all computation could be done on this temporary > variable and transfered into rb->read_ptr once finished, so that modifying the > later only involves memory copy. There is no reason indeed, and only a completely braindead compiler would do it unless forced to, but it is not formally excluded unless you make read_ptr volatile. Using a temporary variable doesn't change the picture at all. Ciao, -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia Lascia la spina, cogli la rosa. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
