Possible Race Condition?

[frank kiln]

This is from an assignment I'm currently working on, the test case passes on certain iterations and fails sometimes. I've spent more then 3 hours trying to find out where I went wrong. Can someone please point me in the correct direction?

Possible Race Condition?

[urban yarrow]

What is the difference between the two outputs?

Cause unless I just copied the wrong file, this is what I get

Ah nevermind, I did in fact mess up the copying

[frank kiln]

rerunning with the same test

results in varied outputs

sometimes it passes and sometimes it does not

[frank kiln]

another example

[urban yarrow]

Yeah, the order is a little messed up, probbaly due to incorrect locking

[frank kiln]

yeah, the problem being i cant figure out for the life of me, where .

[frank kiln]

Any idea where i went wrong?

[urban yarrow]

bit hard to see rn, cause I'm only on my laptop and in the library.
I'll try to get back to it once I get to my big monitor at home

[frank kiln]

Oki OKi

[urban yarrow]

Idk, it's kinda awkward to read since it isn't even clearly marked what your code even is.
There's just a Start of provided code at the beginning and then suddenly it says Your Code ends here, which is really confusing.
On top of that there's a lot of stuff missing for anyone to be able to test-run this themselves.

Nice to see a fellow German though (figured you're one because of the Rechnernetze und Verteilte Systeme comment)

Although our course was called Grundlagen: Rechnernetze und Verteilte Systeme (or the most atrocious acronym: GRNVS)

[frank kiln]

ah hehe

yeah, I didn't send all of it.

It has other files and a test run case

This is my implementation of the ring buffer.

It passes all the provided tests though

(threaded, unthreaded, wrap, nowrap simple and complex tests)

sometimes the third file isn't the same

sometimes the first isnt

file 1 again