database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2026-01-27 21:43:08 +03:00
Code Activity

Add routines for marking buffers dirty efficiently

Browse Source 
This commit introduces new internal bufmgr routines for marking shared
buffers as dirty:
* MarkDirtyUnpinnedBuffer()
* MarkDirtyRelUnpinnedBuffers()
* MarkDirtyAllUnpinnedBuffers()

These functions provide an efficient mechanism to respectively mark one
buffer, all the buffers of a relation, or the entire shared buffer pool
as dirty, something that can be useful to force patterns for the
checkpointer.  MarkDirtyUnpinnedBufferInternal(), an extra routine, is
used by these three, to mark as dirty an unpinned buffer.

They are intended as developer tools to manipulate buffer dirtiness in
bulk, and will be used in a follow-up commit.

Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Aidar Imamov <a.imamov@postgrespro.ru>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Joseph Koshakow <koshy44@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Yuhang Qiu <iamqyh@gmail.com>
Reviewed-by: Xuneng Zhou <xunengzhou@gmail.com>
Discussion: https://postgr.es/m/CAN55FZ0h_YoSqqutxV6DES1RW8ig6wcA8CR9rJk358YRMxZFmw@mail.gmail.com
This commit is contained in:
Michael Paquier
2025-11-28 07:39:33 +09:00
parent 5528e8d104
commit 9660906dbd
2 changed files with 196 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/include/storage/bufmgr.h
View File

@@ -323,6 +323,14 @@ extern void EvictRelUnpinnedBuffers(Relation rel,
int32 *buffers_evicted,
int32 *buffers_flushed,
int32 *buffers_skipped);
extern bool MarkDirtyUnpinnedBuffer(Buffer buf, bool *buffer_already_dirty);
extern void MarkDirtyRelUnpinnedBuffers(Relation rel,
int32 *buffers_dirtied,
int32 *buffers_already_dirty,
int32 *buffers_skipped);
extern void MarkDirtyAllUnpinnedBuffers(int32 *buffers_dirtied,
int32 *buffers_already_dirty,
int32 *buffers_skipped);
/* in buf_init.c */
extern void BufferManagerShmemInit(void);