rust/neon
1
0
Fork 0
mirror of https://github.com/neondatabase/neon.git synced 2026-06-03 13:30:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add n_pages top FileCacheState

Browse Source
This commit is contained in:
Konstantin Knizhnik
2025-04-11 08:57:25 +03:00
parent 30080e4422
commit ff264158c5
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
pgxn/neon/file_cache.c
View File

@@ -175,6 +175,7 @@ typedef struct FileCacheState
int32 vl_len_; /* varlena header (do not touch directly!) */
uint32 magic;
uint32 n_chunks;
uint32 n_pages;
uint16 chunk_size_log;
BufferTag chunks[FLEXIBLE_ARRAY_MEMBER];
/* followed by bitmap */
@@ -620,6 +621,7 @@ lfc_get_state(size_t max_entries)
dlist_iter iter;
size_t i = 0;
uint8* bitmap;
size_t n_pages = 0;
size_t n_entries = Min(max_entries, lfc_ctl->used - lfc_ctl->pinned);
size_t state_size = FILE_CACHE_STATE_SIZE_FOR_CHUNKS(n_entries);
fcs = (FileCacheState*)palloc0(state_size);
@@ -636,12 +638,16 @@ lfc_get_state(size_t max_entries)
for (int j = 0; j < lfc_blocks_per_chunk; j++)
{
if (GET_STATE(entry, j) != UNAVAILABLE)
{
BITMAP_SET(bitmap, i*lfc_blocks_per_chunk + j);
n_pages += 1;
}
}
if (++i == n_entries)
break;
}
Assert(i == n_entries);
fcs->n_pages = n_pages;
elog(LOG, "LFC: save state of %ld chunks", (long)n_entries);
}