Gentoo Archives: gentoo-embedded

From: Christopher Friedt <cfriedt@××××××××××××××.com>
To: gentoo-embedded@l.g.o
Subject: Re: [gentoo-embedded] Hard Real Time Systems with Gentoo?
Date: Tue, 16 Jan 2007 10:17:01
Message-Id: 45ACA5B1.7040302@visible-assets.com
In Reply to: Re: [gentoo-embedded] Hard Real Time Systems with Gentoo? by wireless
1 wireless wrote:
2 > Embedded linux anything, currently, can never be fully deterministic.
3 > Using languages such as C++ or more reaching OO languages
4
5 I think the C++ issue w/ real-time-ness can be resolved as long as you
6 pass -O0 to g++ (no instruction re-scheduling), and you have a test that
7 counts the exact number of ticks that it takes a software interrupt to
8 react to and act upon, in whole, for a given event, then subtract that
9 amount of time from your deadline (thus creating an effective deadline).
10
11 That being said, I have never actually tried writing a hard-real-time
12 state machine in anything other than asm, c, or directly on an fpga, so
13 I could just be full of hot air.
14
15
16 --
17 gentoo-embedded@g.o mailing list