Storing C++ data in an instance field using CNI?

Andrew Haley aph@redhat.com
Wed May 26 16:18:00 GMT 2004


Bryce McKinlay writes:
 > 
 > I'm thinking of adding something like "RawDataMarked" which would be 
 > like RawData but would be checked by the GC. This way you could allocate 
 > a native struct using JvAllocBytes(), and it would be automatically 
 > freed when the Java object becomes unreachable. No need for a finalizer.
 > 
 > Thoughts?
I'm wondering why not use a jbyte[]. The advantage over a jbyte[] is
1. efficiency?
2. alignment, perhaps?
One related issue we might like to consider.
RawData is final. I'm pretty sure this is wrong: being able to
subclass RawData would allow us to define typed pointers. The use of
RawData to point to all manner of things with no type information does
no-one any good.
Andrew.


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