A way to set a flag in java layer when native method has been called?

Hi,
I'm calling a native method from the java layer through to a native c function. Is there a way I can set a flag in the java layer when this native method has been called?
Thanks!

1. Create a wrapper method. The wrapper method is the only exposed method. It calls the native method. It sets the flag.
2. Set the flag in the native method itself.
3. You might be able to use the debugging API to do this however it is going to require quite a bit of work. And it injects itself at runtime.
Is there a reason for this request? There might be other solutions if a general problem was posed.

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