Greg Stark <st...@mit.edu> writes: > I wonder if we could go further. If we don't imagine having a very > large number of allocators then we could just ask each one in turn if > this block is one of theirs and which context it came from. That would > allow an allocator that just allocated everything in a contiguous > block to recognize pointers and return the memory context just by the > range the pointer lies in.
The performance problem is not "large number of allocators", it's "large number of distinct memory ranges". Also, this will fail utterly to recognize duplicate-pfree and bad-pointer cases. Not that the existing method is bulletproof, but this way has zero robustness against caller bugs. regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers