On 16/08/2022 23:37, Chris Plummer wrote:
I'm no expert in this area, especially regarding invokedynamic and
bootstrap methods attributes. I see from the JVM spec that you are
referring to the constant pool BootstrapMethods attribute. Also from
the JVM spec I see that there are other attributes that JVMTI does not
provide any special access to. Some you can get with various JVMTI
APIs, like GetLocalVariableTable, which gives you the part of the
LocalVariableTable attribute that is relevant to the specified method.
But there are attributes that don't have any special APIs to access,
such as NestHost, NestMembers, Record, or PermittedSubclasses,
What might work for you is to just to fetch the constant pool using
GetConstantPool, and get the BootstrapMethods attribute from it.
Right now, to get the class bytes you have to set a CFLH, re-run the
transformation pipeline with RetransformClasses and have the CFLH
capture the bytes. I think there were a requests for a GetClassfile like
API at one point.
-Alan
