1 Sep
2011
1 Sep
'11
3:59 p.m.
On Mon, Aug 29, 2011 at 10:16 PM, Subash Patel subashrp@gmail.com wrote:
Your use case of blocking on read() can be helpful only for a movie thumbnail in gallery. Otherwise, blocking on read(fd) in a userspace can result in frame loss during the encode kind of operation.
Yes, that's exactly the kind of use case I had in mind. Similarly, frame-grab from userland on a pipeline whose continuous flow is in-kernel. The argument is not that you shouldn't have mmap(), it's that you should also have read(), because there are use cases for it.
- M