Hi all,
I'm trying to learn about the under-the-hood workings of virtual
calls to interfaces methods in languages like C# and Java. I'm
asking on this mailing list because I figure someone here must have
implemented this.
I understand virtual methods when you have a single inheritance class
hierarchy. Each object contains an extra field that effectively
points to an array of the function pointers (the "vtable"). So the C
equivalent of a virtual call would be something like:
obj->type[method_offset](obj, arg, ...)
Can someone give me a similar C equivalent of a virtual call to an
interface method? Is there a generally accepted "best" solution, or
do different VMs have different techniques?
thanks,
Rob
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