On Tue, Aug 4, 2020 at 7:27 AM Bharath Rupireddy <bharath.rupireddyforpostg...@gmail.com> wrote: > I could get these points earlier in my initial analysis. In fact, I > could figure out the flow on Windows, how these parameters are shared > using a shared file(CreateFileMapping(), MapViewOfFile()), and the > shared file name being passed as an argv[2] to the child process, and > the way child process uses this file name to read the backend > parameters in read_backend_variables().
Doesn't that happen even if the background worker isn't declared to use BGWORKER_SHMEM_ACCESS? See StartBackgroundWorker(): IIUC, we start with shared memory access, then afterwards detach. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
