Comments (2)
Note that both this tool and JEP-331 came from the same team, and that this tool predates JEP-331 by about a decade. We developed that JEP because we couldn't do everything we wanted with this instrumenter.
That said, we find that this tool still has two meaningful use cases:
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This lets you write the callbacks directly in Java without trampolining through native code. This is the biggest difference: many people don't want to deal with native code if they can avoid it, and it means developers can easily use Java logic their application already depends upon (e.g., logging) if they want. There's a performance penalty, but many folks are happy to take the tradeoff.
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When instrumenting constructors, you can restrict which classes get instrumented, which allows a lightweight way of tracking instantiations of particular types.
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Thank you!
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Related Issues (20)
- Support for JDK 11? HOT 9
- What happens if the constructor throws exception? HOT 3
- Filter/limit instrumentation by package or class name? HOT 1
- JDK11 Compilation Error HOT 3
- Support for jdk13? HOT 4
- Instrumenting constructors fails with VerificationError when interacting with classes that lack stack map frames HOT 10
- I don't understand how to integrate it in a standard Gradle-based project HOT 2
- There is a vulnerability in Guava: Google Core Libraries for Java 28.1-android,upgrade recommended
- Dynamic load issue
- allocation-instrumenter breaks JPMS compliant builds
- Update shaded ASM copy to 9.2 to support Java 17 HOT 2
- String created through java makeConcat not reported
- CVE-2022-42920 Critical org.apache.bcel propagated in 3.3.0 google/allocation-instrumenter HOT 1
- Will the instrumenter detect allocations made via JNI? HOT 2
- Failing to instrument classes due to needing ASM9 in Java stdlib HOT 5
- Update Guava version - currently the latest released version 3.3.2 mentions Guava version that has known vulnerability. HOT 2
- Support JVM 21 HOT 4
- Capture the location where the new object is created HOT 2
- Failing while building java-allocation-instrumenter version 3.3.0 using mvn clean install (java-allocation-instrumenter3.3.0) HOT 3
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