Independent object counting from GC #4
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ysramakrishna
suggested changes
Aug 15, 2025
| "0 will allow back to back young collections to run during old " \ | ||
| "collections.") \ | ||
| \ | ||
| product(uintx, ShenandoahObjectCountInterval, 0, \ |
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"JFR" somewhere in the name so it's clear.
I wouldn't use "0" to mean disabled, since the enabling or disabling is controlled separately by whether the event is enabled or disabled.
In any case, I suppose your plan is to get this value from the JFR event in the future, so may be this semantics can be ignored (i.e. kept) for now. I wouldn't spend time on it.
| * & vm.opt.ExplicitGCInvokesConcurrent != false | ||
| * @library /test/lib /test/jdk | ||
| * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ExplicitGCInvokesConcurrent -XX:MarkSweepDeadRatio=0 -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+IgnoreUnrecognizedVMOptions jdk.jfr.event.gc.objectcount.TestObjectCountEventWithShenandoah | ||
| * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahObjectCountInterval=300 -XX:+ExplicitGCInvokesConcurrent -XX:MarkSweepDeadRatio=0 -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+IgnoreUnrecognizedVMOptions jdk.jfr.event.gc.objectcount.TestObjectCountEventWithShenandoah |
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In order to get these events, you might need to sleep for a sufficient period of time so that the (non-gc) object count event is produced.
…ntGC, and redefined final mark
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