1 files changed, 37 insertions, 0 deletions
diff --git a/src/backend/utils/adt/xid.c b/src/backend/utils/adt/xid.c
index ae273b19610..2f34a5dc1f0 100644
--- a/src/backend/utils/adt/xid.c
+++ b/src/backend/utils/adt/xid.c
@@ -19,6 +19,7 @@
 #include "access/multixact.h"
 #include "access/transam.h"
 #include "access/xact.h"
+#include "common/hashfn.h"
 #include "common/int.h"
 #include "libpq/pqformat.h"
 #include "utils/builtins.h"
@@ -97,6 +98,18 @@ xidneq(PG_FUNCTION_ARGS)
 	PG_RETURN_BOOL(!TransactionIdEquals(xid1, xid2));
 }
 
+Datum
+hashxid(PG_FUNCTION_ARGS)
+{
+	return hash_uint32(PG_GETARG_TRANSACTIONID(0));
+}
+
+Datum
+hashxidextended(PG_FUNCTION_ARGS)
+{
+	return hash_uint32_extended(PG_GETARG_TRANSACTIONID(0), PG_GETARG_INT64(1));
+}
+
 /*
  *		xid_age			- compute age of an XID (relative to latest stable xid)
  */
@@ -288,6 +301,18 @@ xid8cmp(PG_FUNCTION_ARGS)
 }
 
 Datum
+hashxid8(PG_FUNCTION_ARGS)
+{
+	return hashint8(fcinfo);
+}
+
+Datum
+hashxid8extended(PG_FUNCTION_ARGS)
+{
+	return hashint8extended(fcinfo);
+}
+
+Datum
 xid8_larger(PG_FUNCTION_ARGS)
 {
 	FullTransactionId fxid1 = PG_GETARG_FULLTRANSACTIONID(0);
@@ -374,3 +399,15 @@ cideq(PG_FUNCTION_ARGS)
 
 	PG_RETURN_BOOL(arg1 == arg2);
 }
+
+Datum
+hashcid(PG_FUNCTION_ARGS)
+{
+	return hash_uint32(PG_GETARG_COMMANDID(0));
+}
+
+Datum
+hashcidextended(PG_FUNCTION_ARGS)
+{
+	return hash_uint32_extended(PG_GETARG_COMMANDID(0), PG_GETARG_INT64(1));
+}