Utility to read dynamic call graph annotations from file in ASCII format.
Takes a single argument: the name of the file containing the ASCII
annotations. Each line of the file corresponds to an annotation
for one method and has the following format:
CallSite < classloader, classname, method, signature> method_size byte_code_index <callee_classloader, classname, method, signature> method_size weight: weight
Where the types and meanings of the fields is as follows:
<signature> string The method signature