[RFC] Autoload-breakpoints new version [3/9] notification async

[Yao Qi]

On Tuesday, August 07, 2012 03:09:46 PM Hui Zhu wrote:
> This patch is the extend for the notification function.
> Current notification function cannot handle the packet when GDB doesn't want
> to send or receive packet from the remote target. This patch do the extend
> make GDB can handle the notification even if it doesn't send or receive
> packet.

I am trying to understand what current GDB can do, and what patched GDB can 
do.  If I understand it correctly,

  - current GDB only handle notification when it sends or receives packets
  - patched GDB can handle notification at any time when notification comes 
in.

Looks this patch changes the way of GDB handling notifications (from "only-on-
send-receive" handling to "anytime" handling), but has nothing to do with how 
notification is sent out from remote stub.  If so, why do you add 
"NotificationAsync" in remote_supported_packet?  Remote supported packets are 
used to tell GDB what feature remote stub has or doesn't have.  In other 
words, "NotificationAsync" is a feature of GDB, instead of remote stub, so we 
don't need "NotificationAsync".

I applied patch 1/9 and 3/9, and get following regressions in gdbserver with 
async mode on.

  FAIL: gdb.mi/mi-nonstop-exit.exp: finished exec continue (unknown output 
after running)
  FAIL: gdb.mi/mi-nonstop-exit.exp: finished exec continue (2) (unknown output 
after running)
  FAIL: gdb.mi/mi-nsmoribund.exp: resume all, waiting for program exit 
(timeout)

-- 
Yao (齐尧)