How to compare thecaller thread object and callee's holder?

[Tony Guan]

Hi,

a quick question: given a caller thread object( JavaThread* thread)
and the method to be called by the thread (methodOopDesc* method), how
do I know that the holder of the "method" is from the same caller
object or not?

The reason why I am asking is:
in
 JRT_LEAF(int, SharedRuntime::dtrace_method_entry(    JavaThread*
thread, methodOopDesc* method)) in shareRuntime.cpp

I want to check if the method called will start another thread or not,
so I need to compare the holders of the caller and callee.
So one more question: is there any other way to achieve this?

thanks!

Tony (Xiaohua Guan)