[Ace-users] [ace-users] RE : RE : RE : Notify in handle_signal
cleeland at ociweb.com
Tue Feb 12 10:16:40 CST 2008
On Feb 12, 2008, at 7:46 AM, ZXERASOGE002, Ext wrote:
> In my case I don't care if I miss a few notifications when the pipe is
> not empty because I have a loop over waitpid in handle_exception.
> But in
> handle_signal I must be sure I call notify when the pipe is empty. One
> solution would be to check in handle_signal if there is something to
> read from the notification pipe (with a select for instance), and call
> notify *only* when there is nothing to read (ie the pipe is empty).
> problem is the notification_pipe is protected and not public
Don't you still have a race condition where the pipe fills between the
time you check for empty and the time you actually try to write? I
realize that's pathological and fairly unlikely, but it doesn't sound
As far as gaining access to the notification_pipe, it's been awhile
since I've mucked around with reactor internals, but couldn't you
specialize the implementation (Select_Reactor or Select_Reactor_T) and
override notify() with your own implementation that does what you want?
Chris Cleeland, Principal Software Engineer
http://www.theaceorb.com AND http://www.ociweb.com
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