Refactor postmaster child process launching Introduce new postmaster_child_launch() function that deals with the differences in EXEC_BACKEND mode.
Refactor the mechanism of passing information from the parent to child process. Instead of using different command-line arguments when launching the child process in EXEC_BACKEND mode, pass a variable-length blob of startup data along with all the global variables. The contents of that blob depend on the kind of child process being launched. In !EXEC_BACKEND mode, we use the same blob, but it's simply inherited from the parent to child process. Reviewed-by: Tristan Partin, Andres Freund Discussion: https://www.postgresql.org/message-id/7a59b073-5b5b-151e-7ed3-8b01ff7ce...@iki.fi Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/aafc05de1bf5c0324cb5e690c6742118c1ac4af6 Modified Files -------------- src/backend/postmaster/autovacuum.c | 153 +------- src/backend/postmaster/auxprocess.c | 53 +-- src/backend/postmaster/bgworker.c | 20 +- src/backend/postmaster/bgwriter.c | 8 +- src/backend/postmaster/checkpointer.c | 8 +- src/backend/postmaster/launch_backend.c | 432 +++++++++++++++++------ src/backend/postmaster/pgarch.c | 8 +- src/backend/postmaster/postmaster.c | 517 +++++----------------------- src/backend/postmaster/startup.c | 8 +- src/backend/postmaster/syslogger.c | 280 +++++++-------- src/backend/postmaster/walsummarizer.c | 8 +- src/backend/postmaster/walwriter.c | 8 +- src/backend/replication/logical/slotsync.c | 72 +--- src/backend/replication/walreceiver.c | 8 +- src/backend/utils/init/globals.c | 1 + src/include/postmaster/autovacuum.h | 10 +- src/include/postmaster/auxprocess.h | 4 +- src/include/postmaster/bgworker_internals.h | 2 +- src/include/postmaster/bgwriter.h | 4 +- src/include/postmaster/pgarch.h | 2 +- src/include/postmaster/postmaster.h | 18 +- src/include/postmaster/startup.h | 2 +- src/include/postmaster/syslogger.h | 4 +- src/include/postmaster/walsummarizer.h | 2 +- src/include/postmaster/walwriter.h | 2 +- src/include/replication/slotsync.h | 4 +- src/include/replication/walreceiver.h | 2 +- src/tools/pgindent/typedefs.list | 4 + 28 files changed, 656 insertions(+), 988 deletions(-)