com.oracle.svm.hosted.thread

Class VMThreadSTFeature

java.lang.Object

com.oracle.svm.hosted.thread.VMThreadSTFeature

All Implemented Interfaces:

GraalFeature, org.graalvm.nativeimage.hosted.Feature

public class VMThreadSTFeature
extends Object
implements GraalFeature

Collects all VM thread local variables during native image generation and assigns them their offset in the Object[] and byte[] array that hold the values.

Nested Class Summary

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

Constructor Summary

Constructors

Constructor and Description
VMThreadSTFeature()

Method Summary

Modifier and Type	Method and Description
void	beforeCompilation(org.graalvm.nativeimage.hosted.Feature.BeforeCompilationAccess config)
void	duringAnalysis(org.graalvm.nativeimage.hosted.Feature.DuringAnalysisAccess access)
void	duringSetup(org.graalvm.nativeimage.hosted.Feature.DuringSetupAccess config)
boolean	isInConfiguration(org.graalvm.nativeimage.hosted.Feature.IsInConfigurationAccess access)
void	registerInvocationPlugins(org.graalvm.compiler.phases.util.Providers providers, org.graalvm.compiler.api.replacements.SnippetReflectionProvider snippetReflection, org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins invocationPlugins, boolean analysis, boolean hosted) Intrinsify the get() and set() methods during bytecode parsing.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.svm.core.graal.GraalFeature

registerCodeObserver, registerForeignCalls, registerGraalPhases, registerGraphBuilderPlugins, registerLowerings

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

afterAnalysis, afterCompilation, afterHeapLayout, afterImageWrite, afterRegistration, beforeAnalysis, beforeImageWrite, cleanup, getRequiredFeatures, onAnalysisExit

Constructor Detail

VMThreadSTFeature

public VMThreadSTFeature()

Method Detail

isInConfiguration

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

Specified by:

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

duringSetup

public void duringSetup(org.graalvm.nativeimage.hosted.Feature.DuringSetupAccess config)

Specified by:

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

registerInvocationPlugins

public void registerInvocationPlugins(org.graalvm.compiler.phases.util.Providers providers,
                                      org.graalvm.compiler.api.replacements.SnippetReflectionProvider snippetReflection,
                                      org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins invocationPlugins,
                                      boolean analysis,
                                      boolean hosted)

Intrinsify the get() and set() methods during bytecode parsing. We know that every subclass of VMThreadLocal has the same methods. Only the signatures differ based on the type of value.

The value is stored in the two arrays that are in the image heap: a Object[] array for thread local object variables, and a byte[] array for all thread local primitive variables. Therefore, we need the proper read/write barriers. The IsolateThread parameter is ignored.

Specified by:

registerInvocationPlugins in interface GraalFeature

Parameters:

providers - Providers that the lowering can use.

snippetReflection - Snippet reflection providers.

invocationPlugins - The invocation plugins to add to.

analysis - true if registering for analysis, false if registering for compilation

hosted - True if registering for ahead-of-time compilation, false otherwise

duringAnalysis

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

Specified by:

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

beforeCompilation

public void beforeCompilation(org.graalvm.nativeimage.hosted.Feature.BeforeCompilationAccess config)

Specified by:

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