On Tue, May 31, 2022 at 4:32 PM Thomas Munro <thomas.mu...@gmail.com> wrote: > This FPM isn't in a DSM. (It happens to have DSMs *inside it*, > because I'm using it as a separate DSM allocator: instead of making > them with dsm_impl.c mechanisms, this one recycles space from the main > shmem area). I view FPM as a reusable 4kb page-based memory allocator > that could have many potential uses, not as a thing that must live > inside another thing with a TOC. The fact that it uses the relptr > thing makes it possible to use FPM inside DSMs too, but that doesn't > mean it has to be used inside a DSM.
Could it use something other than its own address as the base address? One way to do this would be to put it at the *end* of the "Preallocated DSM" space, rather than the beginning. -- Robert Haas EDB: http://www.enterprisedb.com
