![]() In GraalVM ecosystem news, the current IntelliJ version 2022.3 has experimental support for debugging native executables, and JUnit 5.9.1 has annotations for including or excluding them. Native executables can now contain a Software Bill of Materials (SBOM), and the debugging experience has improved by better identifying memory usage and memory leaks. Two optimizations, StripMineCountedLoops and EarlyGVN, added as experimental in 22.2, are now stable and enabled by default. Native executables use less memory at runtime and run integer min/max operations much more quickly. The GraalVM Native Image AOT compiler performed 2-3 times faster in select benchmarks. That repository, called "GraalVM Reachability Metadata," now has entries for Hibernate, Jetty, JAXB, and Thymeleaf. Working with the Spring and Micronaut frameworks, GraalVM launched a public repository of such hints for Java libraries in July 2022. The GraalVM Native Image compiler needs so-called hints about the usage of reflection in Java code. Native executables can also record the JavaMonitorEnter, JavaMonitorWait, and ThreadSleep events for the free Java Flight Recorder (JFR) tool. The JDK tool, jvmstat, can now monitor the performance and resource usage of native executables and collect heap dumps for inspection with VisualVM. The release contains a lot of improvements for monitoring native executables, an area that lags behind Java programs running in a JRE. Full support for JDK 19 will come in GraalVM 23.0 at the end of January 2023. It has experimental support for JDK 19, including virtual threads and structured concurrency from Project Loom. GraalVM 22.3 was the last feature release for 2022. Oracle announced the alignment of "all the GraalVM technologies with Java from a licensing perspective" and promised "additional details in the coming months." GraalVM Release 22.3 Supports JDK 19, Improves Observability Oracle's Java distribution, on the other hand, uses the "Oracle No-Fee Terms and Conditions" license. ![]() Many OpenJDK distributions, including Oracle's OpenJDK builds, use that same license. The GraalVM Community Edition ships under the GNU General Public License, version 2, with the Classpath Exception. Neither will the other GraalVM projects, such as support for other languages like JavaScript or Python, or Java on Truffle, a Java replacement for the entire Hotspot VM. The Enterprise Edition provides improved Native Image performance, such as the Profile-Guided Optimizations for runtime profiling, but it will not move to OpenJDK. InfoQ recently published an article series on this topic. But that also excludes some Java applications from using GraalVM Native Image. GraalVM Native Image achieves these optimizations by removing unused code and pre-calculating the application heap snapshot, using the Graal Compiler under the hood. That makes Java more competitive in the cloud. The GraalVM Native Image AOT compiler produces native executables that typically start much faster, use less CPU and memory, and have a smaller disk size than Java applications running in a JRE with a JIT compiler. It replaces the C2 JIT compiler, written in C++, which ships in most Java distributions. The Graal Compiler is written in Java and uses the Hotspot VM in a Java Runtime Environment (JRE). The GraalVM OpenJDK project will use the OpenJDK Community processes and submit JDK Enhancement Proposals (JEP) for inclusion in OpenJDK Java releases. Learn more.Īt OpenJDK, the GraalVM Java compilers will align with the Java release cadence of two feature updates per year, four annual patch updates, and one Long-Term Support (LTS) release every two years. Microsoft Azure supports your workload with abundant choices, whether you're working on a Java app, app server, or framework.
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