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Unread 16-06-2014, 00:05
Cel Skeggs Cel Skeggs is offline
Robot Software Manager Alumnus
AKA: Previously known as Colby
FRC #1540 (The Flaming Chickens)
Team Role: Alumni
 
Join Date: Feb 2013
Rookie Year: 2009
Location: Portland, Oregon, USA
Posts: 107
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Re: Challenge problem: 'ladder of abstraction' iterative design in FRC

Quote:
Originally Posted by SoftwareBug2.0 View Post
Prepare to have your mind blown
Code:
void sleep(float length){
	float start=get_time();
	while(get_time()<start+length);
}
I am well aware of this "solution".
I said "reasonably implement". Your suggestion, as I truly hope you know, pegs CPU usage at 100% and consumes all available processing power. This is not reasonable, except in very specific use cases.

Also, if you try this on the cRIO under Java, you'll notice that it hangs every single thread other than the main thread for the duration, because Squawk does cooperative multitasking and this code has no "Thread.yield()". (It's still a bad idea in C++, of course, but not quite as horrendous.)
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Software manager alumnus. Developer of the CCRE, a powerful robot code framework based on dataflow and composibility.
Refer to as she/her/hers. Years of FRC: 2012, 2013, 2014, 2015, 2016. FLL for a few years beforehand.
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