diff options
Diffstat (limited to 'src/include/executor/executor.h')
| -rw-r--r-- | src/include/executor/executor.h | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h index 0ce8dc3fc9f..17ff71c2f98 100644 --- a/src/include/executor/executor.h +++ b/src/include/executor/executor.h @@ -6,7 +6,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: executor.h,v 1.21 1998/02/26 04:41:19 momjian Exp $ + * $Id: executor.h,v 1.22 1998/04/24 14:43:07 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -14,10 +14,48 @@ #define EXECUTOR_H #include <catalog/pg_index.h> +#include <storage/bufmgr.h> #include <access/itup.h> #include <stdio.h> #include <executor/execdesc.h> +/* ---------------- + * TupIsNull + * + * This is used mainly to detect when there are no more + * tuples to process. + * ---------------- + */ +/* return: true if tuple in slot is NULL, slot is slot to test */ +#define TupIsNull(slot) \ +( \ + ((slot) == NULL) ? \ + true \ + : \ + ( \ + ((slot)->val == NULL) ? \ + true \ + : \ + false \ + ) \ +) + +/* -------------------------------- + * ExecIncrSlotBufferRefcnt + * + * When we pass around buffers in the tuple table, we have to + * be careful to increment reference counts appropriately. + * This is used mainly in the mergejoin code. + * -------------------------------- + */ +#define ExecIncrSlotBufferRefcnt(slot) \ +( \ + BufferIsValid((slot)->ttc_buffer) ? \ + IncrBufferRefCount((slot)->ttc_buffer) \ + : (void)NULL \ +) + + /* * prototypes from functions in execAmi.c */ @@ -107,8 +145,6 @@ extern TupleDesc ExecSetSlotDescriptor(TupleTableSlot *slot, TupleDesc tupdesc); extern void ExecSetSlotDescriptorIsNew(TupleTableSlot *slot, bool isNew); -extern void ExecIncrSlotBufferRefcnt(TupleTableSlot *slot); -extern bool TupIsNull(TupleTableSlot *slot); extern void ExecInitResultTupleSlot(EState *estate, CommonState *commonstate); extern void ExecInitScanTupleSlot(EState *estate, |