Messages in this thread | | | Date | Wed, 31 Jul 1996 08:27:43 +0100 | From | "Stephen C. Tweedie" <> | Subject | Re: posix 4 extensions |
| |
Hi,
On Tue, 30 Jul 96 23:16 CDT, jms@pobox.com (Johnie Stafford) said:
sct> The posix.4 real time scheduling classes are supported in 2.0. Most sct> of the other posix.4 stuff requires real time signals, and doing that sct> would require too much change in the kernel to make so close to 2.0. sct> Hopefully you'll see it in 2.1. There was a BOF session at the Berlin sct> LinuxKongress where real time linux was discussed, btw.
> What about the posix.4 shared memory objects? Any chance we might ever > see them? The ability to map shared memory segments to the same > logical address in several different processes would make the use of > pointers in shared memory possible.
Posix shared memory is really no different from the sysV-style shared memory which linux already supports. The main differences are just that posix uses file descriptors to map the memory instead of doing it via shmat(), and that posix uses a different naming space to identify shared memory segments.
Cheers, Stephen. -- Stephen Tweedie <sct@dcs.ed.ac.uk> Department of Computer Science, Edinburgh University, Scotland.
| |