mirror of
https://github.com/neondatabase/neon.git
synced 2025-12-28 00:23:00 +00:00
83e7e5dbbd
This adds PostgreSQL 16 as a vendored postgresql version, and adapts the code to support this version. The important changes to PostgreSQL 16 compared to the PostgreSQL 15 changeset include the addition of a neon_rmgr instead of altering Postgres's original WAL format. Co-authored-by: Alexander Bayandin <alexander@neon.tech> Co-authored-by: Heikki Linnakangas <heikki@neon.tech>
25 lines
1.2 KiB
Markdown
25 lines
1.2 KiB
Markdown
This module contains utilities for working with PostgreSQL file
|
|
formats. It's a collection of structs that are auto-generated from the
|
|
PostgreSQL header files using bindgen, and Rust functions to read and
|
|
manipulate them.
|
|
|
|
There are also a bunch of constants in `pg_constants.rs` that are copied
|
|
from various PostgreSQL headers, rather than auto-generated. They mostly
|
|
should be auto-generated too, but that's a TODO.
|
|
|
|
The PostgreSQL on-disk file format is not portable across different
|
|
CPU architectures and operating systems. It is also subject to change
|
|
in each major PostgreSQL version. Currently, this module supports
|
|
PostgreSQL v14, v15 and v16: bindings and code that depends on them are
|
|
version-specific.
|
|
This code is organized in modules `postgres_ffi::v14`, `postgres_ffi::v15` and
|
|
`postgres_ffi::v16`. Version independent code is explicitly exported into
|
|
shared `postgres_ffi`.
|
|
|
|
|
|
TODO: Currently, there is also some code that deals with WAL records
|
|
in pageserver/src/waldecoder.rs. That should be moved into this
|
|
module. The rest of the codebase should not have intimate knowledge of
|
|
PostgreSQL file formats or WAL layout, that knowledge should be
|
|
encapsulated in this module.
|