Perfect, thank you. On Apr 16, 2014, at 9:56 PM, Michael Paquier <michael.paqu...@gmail.com> wrote:
> On Thu, Apr 17, 2014 at 8:04 AM, Alan Nilsson <anils...@apple.com> wrote: > Is it possible to allocate a small chunk of shared memory outside of any > pools(i.e. manually alloced & de-alloced) that is visible to all processes? > I would like a small amount to store a mutex and a condition variable that is > accessible in a c function from any process. Is there an SPI/API to do this? > You can allocate a custom amount of shared memory at server initialization > using the hook called shmem_startup_hook in ipci.c through a library loaded > with shared_preload_libraries. Why not having a look at > contrib/pg_stat_statements which is a good example? > -- > Michael
