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Add CHECK_FOR_INTERRUPTS in contrib/pg_buffercache functions.

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This commit adds CHECK_FOR_INTERRUPTS to loops iterating over shared
buffers in several pg_buffercache functions, allowing them to be
interrupted during long-running operations.

Backpatch to all supported versions. Add CHECK_FOR_INTERRUPTS to the
loop in pg_buffercache_pages() in all supported branches, and to
pg_buffercache_summary() and pg_buffercache_usage_counts() in version
16 and newer.

Author: SATYANARAYANA NARLAPURAM <satyanarlapuram@gmail.com>
Discussion: https://postgr.es/m/CAHg+QDcejeLx7WunFT3DX6XKh1KshvGKa8F5au8xVhqVvvQPRw@mail.gmail.com
Backpatch-through: 13
This commit is contained in:
Masahiko Sawada
2025-08-19 12:11:25 -07:00
parent 0a98f24a65
commit 7d8d36289f
1 changed files with 3 additions and 0 deletions
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3
contrib/pg_buffercache/pg_buffercache_pages.c
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@@ -11,6 +11,7 @@
#include "access/htup_details.h"
#include "catalog/pg_type.h"
#include "funcapi.h"
#include "miscadmin.h"
#include "storage/buf_internals.h"
#include "storage/bufmgr.h"
@@ -148,6 +149,8 @@ pg_buffercache_pages(PG_FUNCTION_ARGS)
BufferDesc *bufHdr;
uint32 buf_state;
CHECK_FOR_INTERRUPTS();
bufHdr = GetBufferDescriptor(i);
/* Lock each buffer header before inspecting. */
buf_state = LockBufHdr(bufHdr);