Truffle Espresso and Truffle JS behave differently under Hotspot #5850
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Hi, Thank you for reaching out about this issue. Do you have Espresso installed? you can verify this by running If you don't, please install it using |
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We do not publish (full) Espresso on Maven, only some guest APIs as .jars. Running Espresso in other JVMs will run in interpreter only mode, performance will be substantially lower. If that is not an issue then: Download the latest GraalVM matching the Java version of your MS JVM: Here's the modified plugins {
id 'java'
}
group 'com.lingh'
version '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
dependencies {
testImplementation 'org.junit.jupiter:junit-jupiter-api:5.9.2'
testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.9.2'
implementation 'org.graalvm.js:js:22.3.1'
// These are guest APIs, can only be used within Espresso.
// implementation 'org.graalvm.espresso:polyglot:22.3.1'
// implementation 'org.graalvm.espresso:hotswap:22.3.1'
// Some deps are missing on 22.3.1, so we add them manually, see below
// implementation 'org.graalvm.truffle:truffle-nfi:22.3.1'
// implementation 'org.graalvm.truffle:truffle-nfi-libffi:22.3.1'
implementation files('languages/java/espresso.jar')
implementation files('languages/nfi/truffle-nfi.jar')
implementation files('languages/nfi-libffi/truffle-nfi-libffi.jar')
}
test {
useJUnitPlatform()
systemProperty "org.graalvm.language.java.home", "languages/java"
File nfiLibrary = file('lib/libtrufflenfi.so')
systemProperty "truffle.nfi.library", nfiLibrary.absolutePath
}To create an Espresso context, you'll need some extra options: @Test
void testEspresso() {
try (Context polyglot = Context.newBuilder()
.allowNativeAccess(true)
.allowExperimentalOptions(true)
.option("java.JavaHome", System.getProperty("java.home")) // guest Java home, can be any 8/11/17 Java Home.
.option("java.JVMLibraryPath", "languages/java/lib/") // required, we need to know where to look for Espresso's libjvm.so
.build()) {
Value java_lang_Math = polyglot.getBindings("java").getMember(Math.class.getName());
double sqrt2 = java_lang_Math.invokeMember("sqrt", 2).asDouble();
double pi = java_lang_Math.getMember("PI").asDouble();
System.err.println("PI=" + pi);
System.err.println("sqrt2=" + sqrt2);
}
}And that's it. Please note that this franken-JVM is not recommended, running Espresso on GraalVM will give you, at least, one order of magnitude better performance. |
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@linghengqian if you have a convincing use case, please file a feature request to run Espresso standalone from Maven. |
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Describe GraalVM and your environment :
22.3.1CEJDK17Ubuntu 22.04amd64java -Xinternalversion:Have you verified this issue still happens when using the latest snapshot?
You can find snapshot builds here: https://github.com/graalvm/graalvm-ce-dev-builds/releases
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./gradlew clean testshould be fine.Additional context
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UnsupportedFeatureError#5522 ， Some plan to write additional unit tests for the class library need GraalVM Reachability Metadata linghengqian/graalvm-trace-metadata-smoketest#1 and Make ShardingSphere Proxy in GraalVM Native Image form available apache/shardingsphere#21347 .Details
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