com.oracle.svm.truffle.SubstrateTruffleHostEnvironmentLookup Maven / Gradle / Ivy
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package com.oracle.svm.truffle;
import jdk.graal.compiler.truffle.host.TruffleHostEnvironment;
import org.graalvm.nativeimage.Platform;
import org.graalvm.nativeimage.Platforms;
import com.oracle.svm.truffle.api.SubstrateTruffleRuntime;
import jdk.vm.ci.meta.MetaAccessProvider;
import jdk.vm.ci.meta.ResolvedJavaType;
/**
* This handles the Truffle host environment lookup on SVM. During native image compilation the host
* environment is set. Later during runtime the host environment must not be used.
*/
public final class SubstrateTruffleHostEnvironmentLookup implements TruffleHostEnvironment.Lookup {
private final TruffleHostEnvironment environment;
/**
* Used for SVM with the {@link TruffleFeature} enabled.
*/
@Platforms(Platform.HOSTED_ONLY.class)
public SubstrateTruffleHostEnvironmentLookup(SubstrateTruffleRuntime runtime, MetaAccessProvider metaAccess) {
this.environment = new SubstrateTruffleHostEnvironment(runtime, metaAccess);
}
/**
* Used for SVM with only the {@link TruffleBaseFeature} enabled.
*/
@Platforms(Platform.HOSTED_ONLY.class)
public SubstrateTruffleHostEnvironmentLookup() {
this.environment = null;
}
@Platforms(Platform.HOSTED_ONLY.class)
@Override
public TruffleHostEnvironment lookup(ResolvedJavaType forType) {
return environment;
}
}