com.oracle.svm.hosted

Class ServiceLoaderFeature

java.lang.Object

com.oracle.svm.hosted.ServiceLoaderFeature

All Implemented Interfaces:

org.graalvm.nativeimage.hosted.Feature

public class ServiceLoaderFeature
extends Object
implements org.graalvm.nativeimage.hosted.Feature

Support for ServiceLoader on Substrate VM. Services are registered in the folder "META-INF/services/" using files whose name is the fully qualified service interface name. We do not know which services are going to be used by a native image: The parameter of ServiceLoader.load(java.lang.Class<S>, java.lang.ClassLoader) is often but not always a compile-time constant that we can track. But we also cannot put all registered services into the native image. We therefore use the following heuristic: we add all service loader files and service implementation classes when the service interfaces that are seen as reachable by the static analysis. Each used service implementation class is added for reflection (using RuntimeReflection.register(Class[])) and for reflective instantiation (using RuntimeReflection.registerForReflectiveInstantiation(Class[])). For each service interface, a single service loader file is added as a resource to the image. The single file combines all the individual files that can come from different .jar files.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ServiceLoaderFeature.Options

Nested classes/interfaces inherited from interface org.graalvm.nativeimage.hosted.Feature

org.graalvm.nativeimage.hosted.Feature.AfterAnalysisAccess, org.graalvm.nativeimage.hosted.Feature.AfterCompilationAccess, org.graalvm.nativeimage.hosted.Feature.AfterHeapLayoutAccess, org.graalvm.nativeimage.hosted.Feature.AfterImageWriteAccess, org.graalvm.nativeimage.hosted.Feature.AfterRegistrationAccess, org.graalvm.nativeimage.hosted.Feature.BeforeAnalysisAccess, org.graalvm.nativeimage.hosted.Feature.BeforeCompilationAccess, org.graalvm.nativeimage.hosted.Feature.BeforeImageWriteAccess, org.graalvm.nativeimage.hosted.Feature.CompilationAccess, org.graalvm.nativeimage.hosted.Feature.DuringAnalysisAccess, org.graalvm.nativeimage.hosted.Feature.DuringSetupAccess, org.graalvm.nativeimage.hosted.Feature.FeatureAccess, org.graalvm.nativeimage.hosted.Feature.IsInConfigurationAccess, org.graalvm.nativeimage.hosted.Feature.OnAnalysisExitAccess, org.graalvm.nativeimage.hosted.Feature.QueryReachabilityAccess

Constructor Summary

Constructors

Constructor and Description
ServiceLoaderFeature()

Method Summary

Modifier and Type	Method and Description
void	afterRegistration(org.graalvm.nativeimage.hosted.Feature.AfterRegistrationAccess access)
void	beforeAnalysis(org.graalvm.nativeimage.hosted.Feature.BeforeAnalysisAccess access)
void	duringAnalysis(org.graalvm.nativeimage.hosted.Feature.DuringAnalysisAccess a)
boolean	isInConfiguration(org.graalvm.nativeimage.hosted.Feature.IsInConfigurationAccess access)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.graalvm.nativeimage.hosted.Feature

afterAnalysis, afterCompilation, afterHeapLayout, afterImageWrite, beforeCompilation, beforeImageWrite, cleanup, duringSetup, getRequiredFeatures, onAnalysisExit

Constructor Detail

ServiceLoaderFeature

public ServiceLoaderFeature()

Method Detail

isInConfiguration

public boolean isInConfiguration(org.graalvm.nativeimage.hosted.Feature.IsInConfigurationAccess access)

Specified by:

isInConfiguration in interface org.graalvm.nativeimage.hosted.Feature

afterRegistration

public void afterRegistration(org.graalvm.nativeimage.hosted.Feature.AfterRegistrationAccess access)

Specified by:

afterRegistration in interface org.graalvm.nativeimage.hosted.Feature

beforeAnalysis

public void beforeAnalysis(org.graalvm.nativeimage.hosted.Feature.BeforeAnalysisAccess access)

Specified by:

beforeAnalysis in interface org.graalvm.nativeimage.hosted.Feature

duringAnalysis

public void duringAnalysis(org.graalvm.nativeimage.hosted.Feature.DuringAnalysisAccess a)

Specified by:

duringAnalysis in interface org.graalvm.nativeimage.hosted.Feature