diff options
| author | Heikki Linnakangas | 2024-11-14 14:12:28 +0000 |
|---|---|---|
| committer | Heikki Linnakangas | 2024-11-14 14:12:28 +0000 |
| commit | a78af0427015449269fb7d9d8c6057cfcb740149 (patch) | |
| tree | eae2ea6af8d455dd8d352d0e38f667ece481bfd5 /src/tools | |
| parent | bb861414fea31073f27aaab75a0ceaf3638d7985 (diff) | |
Assign a child slot to every postmaster child process
Previously, only backends, autovacuum workers, and background workers
had an entry in the PMChildFlags array. With this commit, all
postmaster child processes, including all the aux processes, have an
entry. Dead-end backends still don't get an entry, though, and other
processes that don't touch shared memory will never mark their
PMChildFlags entry as active.
We now maintain separate freelists for different kinds of child
processes. That ensures that there are always slots available for
autovacuum and background workers. Previously, pre-authentication
backends could prevent autovacuum or background workers from starting
up, by using up all the slots.
The code to manage the slots in the postmaster process is in a new
pmchild.c source file. Because postmaster.c is just so large.
Assigning pmsignal slot numbers is now pmchild.c's responsibility.
This replaces the PMChildInUse array in pmsignal.c.
Some of the comments in postmaster.c still talked about the "stats
process", but that was removed in commit 5891c7a8ed. Fix those while
we're at it.
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/a102f15f-eac4-4ff2-af02-f9ff209ec66f@iki.fi
Diffstat (limited to 'src/tools')
| -rw-r--r-- | src/tools/pgindent/typedefs.list | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list index 50bf81de2bc..5fbf0efe832 100644 --- a/src/tools/pgindent/typedefs.list +++ b/src/tools/pgindent/typedefs.list @@ -230,7 +230,6 @@ BTWriteState BUF_MEM BYTE BY_HANDLE_FILE_INFORMATION -Backend BackendParameters BackendStartupData BackendState @@ -1932,6 +1931,8 @@ PLyTransformToOb PLyTupleToOb PLyUnicode_FromStringAndSize_t PLy_elog_impl_t +PMChild +PMChildPool PMINIDUMP_CALLBACK_INFORMATION PMINIDUMP_EXCEPTION_INFORMATION PMINIDUMP_USER_STREAM_INFORMATION |