contrib/amcheck: Add heapam CHECK_FOR_INTERRUPTS().

Add a CHECK_FOR_INTERRUPTS() call to make heap relation verification
responsive to query cancellations.

Author: Mark Dilger <mark.dilger@enterprisedb.com>
Discussion: https://postgr.es/m/CAH2-Wzk-9RtQgb2QiuLv8j2O0j9tSFKPmmch5nWSZhguUxvbrw%40mail.gmail.com
Backpatch: 14-, where amcheck heap verification was introduced.

diff --git a/contrib/amcheck/verify_heapam.c b/contrib/amcheck/verify_heapam.c
index a3caee7cdd38c4436d7cda9c80cfecf6198e9516..3648ed8d4e7e3eae193a5797489c4630ca611259 100644 (file)
--- a/contrib/amcheck/verify_heapam.c
+++ b/contrib/amcheck/verify_heapam.c
@@ -380,6 +380,8 @@ verify_heapam(PG_FUNCTION_ARGS)
        {
                OffsetNumber maxoff;
 
+               CHECK_FOR_INTERRUPTS();
+
                /* Optionally skip over all-frozen or all-visible blocks */
                if (skip_option != SKIP_PAGES_NONE)
                {