GraalVM的资料

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  An advanced JDK with ahead-of-time Native Image compilation.

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  GraalVM compiles your Java applications ahead of time into standalone binaries. These binaries are smaller, start up to 100x faster, provide peak performance with no warmup, and use less memory and CPU than applications running on a Java Virtual Machine (JVM).

  在编译期，将字节码转换为机器码。

  GraalVM reduces the attack surface of your application. It excludes unused classes, methods, and fields from the application binary. It restricts reflection and other dynamic Java language features to build time only. It does not load any unknown code at run time.

  在编译器，裁剪、消除掉应用程序在运行时不需要、不使用、不加载的类和代码，减少目标应用程序的大小。类似gcc/clang提供的编译选项-ffunction-sections -fdata-sections -Wl,-gc-sections。

• GraalVM Documentation

Getting Started

• Getting Started

  GraalVM compiles your Java applications ahead of time into standalone binaries that start instantly, provide peak performance with no warmup, and use fewer resources.

Native Image

• Native Image

  创建验证项目，执行如下命令：

   mvn archetype:generate -DgroupId=com.example -DartifactId=helloworld -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
  

  构建可执行的jar，修改项目的pom.xml，增加如下配置：

  <build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.12.1</version><configuration><fork>true</fork></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-jar-plugin</artifactId><version>3.3.0</version><configuration><archive><manifest><mainClass>com.example.App</mainClass><addClasspath>true</addClasspath></manifest></archive></configuration></plugin></plugins>
  </build>
  

  使用graalvm转换为本地代码，修改pom.xml，增加如下配置：

  <profiles><profile><id>native</id><build><plugins><plugin><groupId>org.graalvm.buildtools</groupId><artifactId>native-maven-plugin</artifactId><version>${native.maven.plugin.version}</version><extensions>true</extensions><executions><execution><id>build-native</id><goals><goal>compile-no-fork</goal></goals><phase>package</phase></execution><execution><id>test-native</id><goals><goal>test</goal></goals><phase>test</phase></execution></executions></plugin></plugins></build></profile>
  </profiles>
  

  启动构建，执行如下命令：

  mvn -Pnative package
  

• User Guides

• Native Image Basics

Build

• Build Overview
  native-image的常见命令行样例。

• Build Output
  执行native-image构建时，命令行的输出信息。

• Build Configuration
  在jar中增加native-image的配置文件，用于指示构建选项，配置文件的位置，样例如下：

  META-INF/
  └── native-image└── groupID└── artifactID└── native-image.properties
  

  groupID/artifactID如何确定？
  通过学习官方提供的样例，快速上手native-image的使用方法。

• Bundles
  对于使用maven管理、构建的项目，修改项目的pom.xml，增加如下配置：

  <plugin><groupId>org.graalvm.buildtools</groupId><artifactId>native-maven-plugin</artifactId><configuration><buildArgs combine.children="append"><buildArg>--bundle-create</buildArg></buildArgs></configuration>
  </plugin>
  

  构建软件时，执行如下命令：

  ./mvnw package -Dpackaging=native-image
  

• Command-line Options
  native-image的选项。

Reachability Metadata

• Reachability Metadata

Optimizations and Performance

• Optimizations and Performance
• Profile-Guided Optimization
• Memory Management
• Class Initialization

Debugging and Diagnostics

• Debugging and Diagnostics
• Create a Heap Dump from a Native Executable
• Points-to Analysis Reports

Dynamic Features

• Dynamic Features

Interoperability with Native Code

• Interoperability with Native Code

• JVM JNI Invocation API

• GraalVM JNI Invocation API

• Native Image C API

• LLVM Backend for Native Image

Reference Manuals

• GraalVM Reference Manuals

Java and JVM

• Java and JVM

Java on Truffle

• Java on Truffle
• Interoperability with Truffle Languages
• Implementation Details

  Java on Truffle is a minified Java VM that implements all core components of JVM.

• Enhanced HotSwap Capabilities
• Running Demo Applications
• FAQ