SAP Machine
JDK
| SAP Machine | JDK | |
|---|---|---|
| 1 | 193 | |
| 488 | 18,442 | |
| 0.6% | 1.4% | |
| 10.0 | 10.0 | |
| 4 days ago | 2 days ago | |
| Java | Java | |
| GNU General Public License v3.0 only | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
SAP Machine
-
What's the business thinking behind so many different OpenJDK builds by different vendors?
SapMachine has specific changes that is used in their Cloud platforms. https://github.com/SAP/SapMachine/wiki/Differences-between-SapMachine-and-OpenJDK
JDK
- Intel submitted OpenJDK PRs for supporting new 64 bit general purpose registers
-
Show HN: I Built a Java IDE for iPad
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)
- JEP draft: Exception handling in switch
-
Java 23: The New Features Are Officially Announced
Completely gutted from the OpenJDK, last I checked. See here for the culprit PR: https://github.com/openjdk/jdk/pull/18688
-
macOS 14.4 might break Java on your machine
> 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.
-
The Return of the Frame Pointers
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...
- JDK-8180450: secondary_super_cache does not scale well
- The One Billion Row Challenge
- AVX2 intrinsics for Arrays.sort methods (int, float arrays)
- A gentle introduction to two's complement
What are some alternatives?
Adopt Open JDK - Eclipse Temurin™ build scripts - common across all releases/versions
Graal - GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
aircraft - The A32NX & A380X Project are community driven open source projects to create free Airbus aircraft in Microsoft Flight Simulator that are as close to reality as possible.
Liberica JDK - Free and 100% open source Progressive Java Runtime for modern Java™ deployments supported by a leading OpenJDK contributor
steam-runtime - A runtime environment for Steam applications
Dragonwell8 - Alibaba Dragonwell8 JDK
OkHttp - Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
audiveris - Latest generation of Audiveris OMR engine
kitten - A statically typed concatenative systems programming language.
rpi-projects - Drivers and home automation projects for Raspberry PI.
intellij-community - IntelliJ IDEA Community Edition & IntelliJ Platform