1 files changed, 26 insertions, 0 deletions
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h
index e05bc04f525..084d59ef834 100644
--- a/src/include/nodes/execnodes.h
+++ b/src/include/nodes/execnodes.h
@@ -1981,6 +1981,29 @@ typedef struct GatherMergeState
 } GatherMergeState;
 
 /* ----------------
+ *	 Values displayed by EXPLAIN ANALYZE
+ * ----------------
+ */
+typedef struct HashInstrumentation
+{
+	int			nbuckets;		/* number of buckets at end of execution */
+	int			nbuckets_original;	/* planned number of buckets */
+	int			nbatch;			/* number of batches at end of execution */
+	int			nbatch_original;	/* planned number of batches */
+	size_t		space_peak;		/* speak memory usage in bytes */
+} HashInstrumentation;
+
+/* ----------------
+ *	 Shared memory container for per-worker hash information
+ * ----------------
+ */
+typedef struct SharedHashInfo
+{
+	int			num_workers;
+	HashInstrumentation hinstrument[FLEXIBLE_ARRAY_MEMBER];
+} SharedHashInfo;
+
+/* ----------------
  *	 HashState information
  * ----------------
  */
@@ -1990,6 +2013,9 @@ typedef struct HashState
 	HashJoinTable hashtable;	/* hash table for the hashjoin */
 	List	   *hashkeys;		/* list of ExprState nodes */
 	/* hashkeys is same as parent's hj_InnerHashKeys */
+
+	SharedHashInfo *shared_info;	/* one entry per worker */
+	HashInstrumentation *hinstrument;	/* this worker's entry */
 } HashState;
 
 /* ----------------