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const-qualify ItemPointer comparison functions

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Add const qualifiers to ItemPointerEquals() and ItemPointerCompare().
This will allow further changes up the stack.  It also complements
commit aeb767ca0b, as we now have all of itemptr.h appropriately
const-qualified.

Author: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CAEoWx2nBaypg16Z5ciHuKw66pk850RFWw9ACS2DqqJ_AkKeRsw@mail.gmail.com
This commit is contained in:
Peter Eisentraut
2025-10-30 09:38:52 +01:00
parent e2cf524e4a
commit 3479a0f823
2 changed files with 4 additions and 4 deletions
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4
src/backend/storage/page/itemptr.c
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@@ -32,7 +32,7 @@ StaticAssertDecl(sizeof(ItemPointerData) == 3 * sizeof(uint16),
* Asserts that the disk item pointers are both valid! * Asserts that the disk item pointers are both valid!
*/ */
bool bool
ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2) ItemPointerEquals(const ItemPointerData *pointer1, const ItemPointerData *pointer2)
{ {
if (ItemPointerGetBlockNumber(pointer1) == if (ItemPointerGetBlockNumber(pointer1) ==
ItemPointerGetBlockNumber(pointer2) && ItemPointerGetBlockNumber(pointer2) &&
@@ -48,7 +48,7 @@ ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2)
* Generic btree-style comparison for item pointers. * Generic btree-style comparison for item pointers.
*/ */
int32 int32
ItemPointerCompare(ItemPointer arg1, ItemPointer arg2) ItemPointerCompare(const ItemPointerData *arg1, const ItemPointerData *arg2)
{ {
/* /*
* Use ItemPointerGet{Offset,Block}NumberNoCheck to avoid asserting * Use ItemPointerGet{Offset,Block}NumberNoCheck to avoid asserting

4
src/include/storage/itemptr.h
View File

@@ -217,8 +217,8 @@ ItemPointerSetMovedPartitions(ItemPointerData *pointer)
* ---------------- * ----------------
*/ */
extern bool ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2); extern bool ItemPointerEquals(const ItemPointerData *pointer1, const ItemPointerData *pointer2);
extern int32 ItemPointerCompare(ItemPointer arg1, ItemPointer arg2); extern int32 ItemPointerCompare(const ItemPointerData *arg1, const ItemPointerData *arg2);
extern void ItemPointerInc(ItemPointer pointer); extern void ItemPointerInc(ItemPointer pointer);
extern void ItemPointerDec(ItemPointer pointer); extern void ItemPointerDec(ItemPointer pointer);