JDK VS croc

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...

This very hn entries is bust contradicting your statement.

Also what about syncthing[1] (for recurrent/permanent sync) and croc[2] (for one time copies) ?

I have used both for a number of years already.

[1] https://syncthing.net/

[2] https://github.com/schollz/croc

Check out croc, I've been using it for years, and it works pretty great too!

https://github.com/schollz/croc

I'm trying to find very specific software.I need CLI(!!!) tool like Croc to share files using P2P, but it's very inconvenient to ask people to install same software as me(Croc in this case). Instead i want to get direct download URL, so anyone can download it just by using browser.

Related projects:

- FlyingCarpet: direct transfer over local adhoc WIFI: https://github.com/spieglt/FlyingCarpet

- LANDrop: Drop any files to any devices on your LAN: https://github.com/LANDrop/LANDrop

- In-browser file transfer similar to Airdrop: https://snapdrop.net/

- Magic Wormhole: simple file transfer from computer-to-computer over the net: https://github.com/magic-wormhole/magic-wormhole

- Croc: similar to magic wormhole: https://github.com/schollz/croc

- Wormhole: user-friendly in-browser based e2e encrypted file transfer: https://wormhole.app/

There’s already the excellent [croc](https://github.com/schollz/croc) which I’ve gotten all my friends to install and use.