RFR (M): 7157365: jruby/bench.bench_timeout crashes with JVM internal error (original) (raw)

Vladimir Kozlov vladimir.kozlov at oracle.com
Thu Jun 14 15:53:05 PDT 2012

Christian,

Can you move duplicated code in callGenerator into separate method?

Thanks, Vladimir

Christian Thalinger wrote:

http://cr.openjdk.java.net/~twisti/7157365

7157365: jruby/bench.benchtimeout crashes with JVM internal error Reviewed-by: The problem manifests itself as an assert in escape analysis code: assert((ptnodeadr(adr->idx) == NULL || ptnodeadr(adr->idx)->asField()->isoop())) failed: sanity The out-of-line code for invokedynamic instructions loads the CallSite object from the constant pool cache. Since the constant pool cache contains data other than oops we return the type as byte[] and load the oop as raw pointer. Escape analysis notices this misbehavior and bails out. The best possible fix for now is to define the constant pool cache base pointer as an oop array and load a raw pointer from there. Note that this is more of a temporary fix since the perm-gen removal will fix this problem in a more correct fashion. src/share/vm/memory/universe.hpp src/share/vm/opto/callGenerator.cpp src/share/vm/opto/chaitin.cpp src/share/vm/opto/type.cpp

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