com.oracle.svm.hosted.thread

Class VMThreadMTFeature

java.lang.Object

com.oracle.svm.hosted.thread.VMThreadMTFeature

All Implemented Interfaces:

GraalFeature, org.graalvm.nativeimage.hosted.Feature

public class VMThreadMTFeature
extends Object
implements GraalFeature

Collects all VM thread local variables during native image generation and assigns them their offset in the IsolateThread data structure.

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, org.graalvm.nativeimage.hosted.Feature.QueryReachabilityAccess

Constructor Summary

Constructors

Constructor and Description
VMThreadMTFeature()

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)
int	getVMThreadSize()
boolean	isInConfiguration(org.graalvm.nativeimage.hosted.Feature.IsInConfigurationAccess access)
int	offsetOf(FastThreadLocal threadLocal)
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.
void	setThreadLocalAtOffsetZero(FastThreadLocal threadLocal)

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

VMThreadMTFeature

public VMThreadMTFeature()

Method Detail

getVMThreadSize

public int getVMThreadSize()

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.

When the IsolateThread is not passed in as a parameter, we use the current thread. We do not need read/write barriers since we access memory that we manage ourselfs.

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

setThreadLocalAtOffsetZero

public void setThreadLocalAtOffsetZero(FastThreadLocal threadLocal)

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

offsetOf

public int offsetOf(FastThreadLocal threadLocal)