On Sun, 2002-11-03 at 22:46, Elladan wrote: > could be wrong about that, but I think you'd need rtlinux style > extensions to the kernel to achieve direct interrupt deliveries to > user-space (and you'd need to be root, and such).
You cannot deliver interrupts directly to user space without processing them in the kernel first to shut up the IRQ source. In terms of delivering an asynchronous event we have asynchronous I/O which already provides the needed interfaces including picking a poxix real time signal should you not want SIGIO. Exposing the frame count efficiently to X is also easy to do - stick it in a page of memory with nothing else important except DRI and other stuff you want the app to see, then mmap it into user space. _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
