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Clarify where various catcache.h dlist_nodes are used

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Also remove a comment which mentions we don't currently divide the
per-cache lists into hash buckets.  Since 473182c95, we do.

Author: ChangAo Chen <cca5507@qq.com>
Discussion: https://postgr.es/m/tencent_7732789707C8768EA13785A7B5EA29103208@qq.com
This commit is contained in:
David Rowley
2026-01-06 14:39:36 +13:00
parent e212a0f8e6
commit c5af141cd4
1 changed files with 2 additions and 5 deletions
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7
src/include/utils/catcache.h
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@@ -93,7 +93,7 @@ typedef struct catctup
* lookups. Keep the dlist_node field first so that Valgrind understands
* the struct is reachable.
*/
dlist_node cache_elem; /* list member of per-bucket list */
dlist_node cache_elem; /* member for CatCache.cc_bucket[] dlist */
int ct_magic; /* for identifying CatCTup entries */
#define CT_MAGIC 0x57261502
@@ -144,9 +144,6 @@ typedef struct catctup
* object contains links to cache entries for all the table rows satisfying
* the partial key. (Note: none of these will be negative cache entries.)
*
* A CatCList is only a member of a per-cache list; we do not currently
* divide them into hash buckets.
*
* A list marked "dead" must not be returned by subsequent searches.
* However, it won't be physically deleted from the cache until its
* refcount goes to zero. (A list should be marked dead if any of its
@@ -163,7 +160,7 @@ typedef struct catclist
* Keep the dlist_node field first so that Valgrind understands the struct
* is reachable.
*/
dlist_node cache_elem; /* list member of per-catcache list */
dlist_node cache_elem; /* member for CatCache.cc_lbucket[] dlist */
int cl_magic; /* for identifying CatCList entries */
#define CL_MAGIC 0x52765103