RVS_UIKit_Toolbox VS JDK

> I don't think I could in good conscience recommend your approach as a general practice.

I can live with that, but ... (There's always a "but")

I am not happy at all, with the general industry practice of writing every project to be something that can be understood by inexperienced, undisciplined coders.

Every language and programming methodology has an "advanced" type of thing, requiring people to have experience and/or book-larnin'.

I write Swift at a fairly advanced level. I am not at the level of some heavy-duty advanced Swift people, but I am pretty "idiomatic," in my approach. It is not "rewritten TypeScript," like so much code out there.

My code is very well-documented, and I hold myself to standards of Quality that most folks in the industry consider to be obsessive to the point of insanity. My testing code usually dwarfs my implementation code, and my documentation is, let's say ... complete. You can see what I mean in my latest module[0].

I won't write junk, so that someone used to junk, can comprehend it. If people aren't willing to learn enough to understand my middle-of-the-road semi-advanced Swift, then I can't help them. Swift is an awesome language. I feel that we are doing ourselves a disservice, if we do not explore it.

I write for myself. I write code and documentation that I want to use (and I use it). I really don't care, whether or not someone else "approves" of it. I am not relying on others to review, maintain, or patch my code.

When I do use other people's code, I vet it fairly carefully. Including a dependency is a really serious matter. I'm handing full control of my execution context to code that someone else wrote. I'd damn well better take that Responsibility seriously.

[0] https://github.com/RiftValleySoftware/RVS_UIKit_Toolbox

I felt out of the loop, thinking that Zero VM was some kind of new distro for OpenJDK but chasing <https://packages.debian.org/sid/openjdk-22-jre-zero#:~:text=...> to <https://sources.debian.org/src/openjdk-11/11.0.23%2B9-1/debi...> lead me to https://github.com/openjdk/jdk/tree/jdk-22-ga/src/hotspot/cp...

It seems that it's a specific CPU target for the Hotspot JIT for non-mainstream architectures (or for research purposes, as I saw mentioned once)

Completely gutted from the OpenJDK, last I checked. See here for the culprit PR: https://github.com/openjdk/jdk/pull/18688

> Yes, they're changing one aspect of signal handler use to work around this problem. They're not stopping the use of signal handlers in general. Hotspot continues to use signals for efficiency in general. See https://github.com/openjdk/jdk/blob/9059727df135dc90311bd476...

This whole thread is about SIGSEGV, and specifically their SIGSEGV handling. However, catching normal signals is not about efficiency.

Some of their exception handling is still odd: There is no reason for a program that receives SIGILL to ever attempt continuing. But others is fine, like catching SIGFPE to just forward an exception to the calling code.

(Sure, you could construct an argument to say that this is for efficiency if you considered the alternative to be implementing floating point in software so that all exceptions exist in user-space, but hardware floating point is the norm and such alternative would be wholly unreasonable.)

> The wonderful thing about choosing not to care about facts is having whatever opinions you want.

I appreciate the irony of you making such statement, proudly thinking that your opinion equals fact, and therefore any other opinion is not.

This discussion is nothing but subjective opinion vs. subjective opinion. Facts are (hopefully, as I can only speak for myself) inputs to both our opinions, but no opinion about "good" or "bad", "nasty" or not can ever be objective. Objective code quality does not exist.

I remember talking to Brendan about the PreserveFramePointer patch during my first months at Netflix in 2015. As of JDK 21, unfortunately it is no longer a general purpose solution for the JVM, because it prevents a fast path being taken for stack thawing for virtual threads: https://github.com/openjdk/jdk/blob/d32ce65781c1d7815a69ceac...