RFR (M) 8214892: Delayed starting of debugging via jcmd

[Schmelter, Ralf]

Hi Chris,

> I think I prefer passing EI_VM_INIT for triggering_ei, but if you prefer 
> to keep it as is, I suggest a comment to clarify why it might be out of 
> range.

Actually, I used EI_VM_INIT for the longest time and only changed it recently, because I thought that code could assume that e.g. no classes have been loaded yet when getting the INIT_VM event. But since the JVMTI spec does not guarantees this in any way (it allows other events to be send before a VM_INIT), I just will change it back to use EI_VM_INIT for the initialize call.

Regarding the name of the option, I agree that onjcmd, while not technically fully accurate, makes most sense for the common user.

> ... It think you could just return the error right away and remove 
> the error checking code that comes later.

I've changed the code to just return the error directly. 

> It's not clear to me why you want the name and address of the first 
> transport. Why is the first one necessarily the one you want?

Since currently the bag of transports must always have a size of 1, getting the first or the last transport is the same. But the callback function used to iterate the bag has to return a boolean value. I've decided to return JNI_FALSE, which would mean the iteration stops at the first entry.


I've updated the webrev with your and Goetz Lindenmeier's suggestions: http://cr.openjdk.java.net/~rrich/webrevs/schmelter/8214892/webrev.02/

Best regards,
Ralf