On Fri, 09 Apr 2021 15:34:14 +0200, Jaroslav Kysela wrote: > > Dne 09. 04. 21 v 12:59 Takashi Iwai napsal(a): > > >> 5. add any mechanism to bind lifetime of user-defined element set to user > >> process > >> > >> At present, the lifetime of user-defined element set is bound to card > >> itself. However, it's convenient to user processes to bind the lifetime > >> to process itself. I add any mechanism for it. > >> > >> For recent years I've made some patches in house but never arrive at the > >> best one. In the patches, I utilize access flags but in general the > >> maintenance of lifetime is not easy issue. I tackle again in this time. > > > > It sounds interesting, but I don't know how easily you can manage it. > > The driver doesn't care much about the user process lifetime, but > > mostly concentrate on the file handle... > > It should be easy to trace which process created the user element and > automatically remove this element when the process close the file descriptor. > Something like 'bind lifetime of the control to the active control file > descriptor'. If it's tied only with the file handle, it's easy. But I thought this is about the process? Takashi
