Comments (6)
skybber
commented on July 3, 2024
sure
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xiandafu
commented on July 3, 2024
i don't think so,C2 is suppoted before class redifine.
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skybber
commented on July 3, 2024
C2 is JIT in hotspot VM. -xxaltjvm=dcevm or -server specify which hotspot binary is used on start.
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xiandafu
commented on July 3, 2024
DCEVM executes deoptimization (purge of code cache) after any class redefinition
I get JIT log and open it by JITWatch, JITWath showed C2(Level4) was never proceed after purge of code cache, but C1(level2) can work well
the jit log as follow
https://oscimg.oschina.net/oscnet/up-03b34af48264377df624b79cb09452f10b8.png
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skybber
commented on July 3, 2024
What version of dcevm/java are you using?
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xiandafu
commented on July 3, 2024
Sorry, I used the wrong Java version and now I am using jdk1.8.0_ 45 witch DCEVM-light-8u45-installer, C2 will take effect，
the jit log as follow
https://oscimg.oschina.net/oscnet/up-636db57568a35324140ac5e8fbbd84f6f6b.png
thanks skybber
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Related Issues (20)
- DCEVM supports AARCH64 planning
- DCEVM for Java 17 HOT 37
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- A fatal error has been detected by the Java Runtime Environment
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- Invalid layout of java.lang.Thread at name
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- Where i can download jdk-8u181? HOT 1
- Open Source Licence HOT 1
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