Detecting when a process is dumping core

Can someone point me to how I might determine if a process is dumping core? The scenario is that I have a watchdog process which needs to send sigabrt to processes which are in wedged state. These processes are running in large memory and hence core dumps can take a little while. I think I remember being able to check a flag of a process which would identify that the process was in the process of dumping core.

Thanks

[433 byte] By [eservglobal] at [2007-11-26 10:22:26]