> > We are working on a project where we want to create a single linked list > > that holds information of all the locks taken or being waited for by > > transactions in Postgresql. > >How will you maintain such a list, when the underlying state is

>constantly being changed by many different processes?

What do you mean by underlying state? And also, each each time any process (transaction)wants to acqure a lock it calls LockAcquire (and if we put our code to update our linkedlist)and won't that ways each processes's actions be recorded in the linkedlist.

thanks

-sumaira