database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-11 10:01:57 +03:00
Code Activity

Extend the BufFile interface.

Browse Source 
Allow BufFile to support temporary files that can be used by the single
backend when the corresponding files need to be survived across the
transaction and need to be opened and closed multiple times. Such files
need to be created as a member of a SharedFileSet.

Additionally, this commit implements the interface for BufFileTruncate to
allow files to be truncated up to a particular offset and extends the
BufFileSeek API to support the SEEK_END case. This also adds an option to
provide a mode while opening the shared BufFiles instead of always opening
in read-only mode.

These enhancements in BufFile interface are required for the upcoming
patch to allow the replication apply worker, to handle streamed
in-progress transactions.

Author: Dilip Kumar, Amit Kapila
Reviewed-by: Amit Kapila
Tested-by: Neha Sharma
Discussion: https://postgr.es/m/688b0b7f-2f6c-d827-c27b-216a8e3ea700@2ndquadrant.com
This commit is contained in:
Amit Kapila
2020-08-26 07:36:43 +05:30
parent adc8fc6167
commit 808e13b282
11 changed files with 239 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/include/pgstat.h
View File

@ -916,6 +916,7 @@ typedef enum
WAIT_EVENT_BASEBACKUP_READ = PG_WAIT_IO,
WAIT_EVENT_BUFFILE_READ,
WAIT_EVENT_BUFFILE_WRITE,
WAIT_EVENT_BUFFILE_TRUNCATE,
WAIT_EVENT_CONTROL_FILE_READ,
WAIT_EVENT_CONTROL_FILE_SYNC,
WAIT_EVENT_CONTROL_FILE_SYNC_UPDATE,