A simple example tool built using the Truffle instrumentation API.
License: Universal Permissive License v1.0
A simple demonstration code coverage tool built using Truffle for GraalVM.
The source code is documented to explain the how and why of writing a Truffle tool. A good way to find out more is to read the source with comments. We also like to encourage people to clone the repository and start hacking.
This repository is licensed under the permissive UPL licence. Fork it to begin your own Truffle tool.
For instructions on how to get started please refer to our website
It looks like the current documentation is outdated when compared with the code in simpletool.
It would be great if the README contained updated instructions on using SimpleTool that includes instructions on using it for other languages as well.
If this documentation exists somewhere, I'd really appreciate if you could point me towards it.
Thank you.
I am new to GraalVM. While building simpletool with GraalVM-JDK-17, following error seems to prevent successful compilation ($mvn clean package):
simpletool/src/main/java/module-info.java:[41,1] module org.graalvm.st reads package org.graalvm.home from both org.graalvm.polyglot and org.graalvm.sdk
The issue is seen on windows too.
On linux, the software tools have following versions:
Apache Maven 3.8.4 (9b656c72d54e5bacbed989b64718c159fe39b537)
Maven home: /usr/lib/maven
Java version: 17.0.9, vendor: GraalVM Community, runtime: .../_installs/graalvm-ce-17
Default locale: en, platform encoding: UTF-8
OS name: "linux", version: "5.4.0-48-generic", arch: "amd64", family: "unix"
Do we need to add any specific exports for simpletool when compiled with GraalVM-JDK-17?
Below is the tail log of the compilation error seen:
[INFO] --- maven-compiler-plugin:3.11.0:compile (default-compile) @ simpletool ---
[INFO] Changes detected - recompiling the module! :source
[INFO] Compiling 6 source files with javac [debug target 17 module-path] to target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /home/prj/myitems/javaUnitTest/integrationPrj/simpletool/src/main/java/module-info.java:[41,1] module org.graalvm.st reads package org.graalvm.home from both org.graalvm.polyglot and org.graalvm.sdk
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.962 s
[INFO] Finished at: 2024-02-15T22:58:02+05:30
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.11.0:compile (default-compile) on project simpletool: Compilation failure
[ERROR] /home/prj/myitems/javaUnitTest/integrationPrj/simpletool/src/main/java/module-info.java:[41,1] module org.graalvm.st reads package org.graalvm.home from both org.graalvm.polyglot and org.graalvm.sdk
[ERROR]
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
Hello, I will pull the project from github into the idea and find that this class does not exist. Why is this? Is this casual?
Hello, First of all, thank you for the project.
I'm trying to create a simple helloworld program of instrumenting js through Graal VM.
Eventually to create a monitoring tool for Graal.
But having a hard time. Since there isn't any instructions on how to execute(with what options) in the instrumenting guide in graal homepage
I've found this repository and try to execute one. So far I've understood or assumed... that I need to compile the instrumenting program which uses truffle API(in this case SimpleCoverageInstrument.java and all) and gives the jar as an option when running js program (Please let me know if I am getting this wrong)
I've maven installed and got simpletool-19.2.0.jar
and then I've executed runJSWithCoverage.sh and is giving me an argument error.
Am I doing something wrong? Can you point out a few things if I'm on the wrong path?
I am following this using the tutorial. It works fine for the given .js example.
I tried to use the same approach to instrument some java application, but it fails as follows.
class GFG {
// Main driver method
public static void main(String[] args)
{
// Print statement
int a = 1+2;
}
}
graalvm-ce-java11-21.2.0/bin/java --vm.Dtruffle.class.path.append=target/simpletool.jar --vm.Dtruffle.class.path.append=target/simpletool.jar --simple-code-coverage ../GFG
Output:
Unrecognized option: --jvm
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
I removed -jvm flag, and the corresponding output is:
Unrecognized option: --vm.Dtruffle.class.path.append=target/simpletool.jar
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Can you give a java example?
Thanks
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