It sounds to me like you're using the old shared memory mechanism. I'd recommend switching to the new way, 'mbuff'. Look up the details on the web site, but essentially it allows you to not partition exclusive RAM, and yet share memory between rtl and user space. Very easy to use, mbuff_alloc & mbuff_free. As someone already asked - is anyone using shared memory on whole functional objects, as opposed to just data structures? Is there any reason this wouldn't be possible, assuming all code adheres to the header/library standards associated with both environments? I'm not sure why this would be useful, but it sounds cool. You could at the very least use such a setup to reduce redundant memory associated with simple operations used by both rt-threads and user space programs, in an attempt to keep RAM requirements at a minimum. -Chuck > Hi again, > after reading the shared memory thread I think that the problem discribed > there triggered another question for me: > Assuming that I made a shared memory block for access from Linux and > RTLinux, how do I force objects (or functions) to be placed exactly there? > At the moment I only see the possibility of writing a huge block of data > there and accessing it from the 'other side'. > Are there any "new" extensions that can put objects in memory where I want > them (i.e., the shared mem area)? > On Jan 24, 2001, bionic wrote: "... after instanciating, map the objects > to the shared mem area". > How is that done? Maybe this is the absolute beginner question, ... > In my books, i didn't find anything about this. Are there books which you > would suggest covering this? > > Thank's in advance > > Dirk Pohl > University of Kaiserslautern > > > > > > -- [rtl] --- > To unsubscribe: > echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR > echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] > --- > For more information on Real-Time Linux see: > http://www.rtlinux.org/rtlinux/ > -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
