Christoph Angerer [
http://community.jboss.org/people/chmaruni] created the discussion
"Changing array fields into java.util.concurrent.atomic.AtomicReferenceArray"
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http://community.jboss.org/message/589069#589069
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Hi,
I am trying to replace fields of array type into fields of type
java.util.concurrent.atomic.AtomicReferenceArray
My approach was like this:
1) change the field type through CtField.setType()
2) redirect reads/writes to arrays to static methods using
CodeConverter.replaceArrayAccess(). In the static methods I would call the
AtomicReferenceArray.set() and .get() methods.
3) rewrite array new bytecodes to calls to new
java.util.concurrent.atomic.AtomicReferenceArray()
Besides several more or less small problems (e.g., I would have to rewrite local arrays
and method signatures, too) my biggest problem is in step 3. I was trying inside
ExprEditor.edit(NewArray a) something like: a.replace("$_ = new
java.util.concurrent.atomic.AtomicReferenceArray(" + dim + ");");
However, this does not work because the javassist bytecode checks the type and sees that
AtomicReferenceArray is not an array. Which is true, but since I will rewrite subsequent
array accesses, too, I think that should be fine.
So my question(s) is (are): Does anybody have experience with something as intrusive as
replacing all arrays in a program with a non-array object and if yes, is there any code
out there from which I could learn or which I could use? If not, does anybody have an idea
how I could make the third step work without the javassist compiler complaining about the
type?
Thanks in advance for your time and effort!
Christoph
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