gin_stat works on 10.0

diff --git a/gevel.c b/gevel.c
index f20ec38..a00c0b8 100644 (file)
--- a/gevel.c
+++ b/gevel.c
@@ -1304,6 +1304,10 @@ gin_statpage(PG_FUNCTION_ARGS)
        BlockNumber blkno;
        char            res[1024];
        uint32          totalPages,
+#if PG_VERSION_NUM >= 100000
+                               deletedPages = 0,
+                               emptyDataPages = 0,
+#endif
                                entryPages = 0,
                                dataPages = 0,
                                dataInnerPages = 0,
@@ -1346,19 +1350,35 @@ gin_statpage(PG_FUNCTION_ARGS)
                page = BufferGetPage(buffer);
                header = (PageHeader)page;
 
+#if PG_VERSION_NUM >= 100000
+               if (GinPageIsDeleted(page))
+               {
+                       deletedPages++;
+               }
+               else
+#endif
                if (GinPageIsData(page))
                {
                        dataPages++;
                        if (GinPageIsLeaf(page))
                        {
-                               ItemPointerData minItem;
+                               ItemPointerData minItem, *ptr;
                                int nlist;
 
+
                                dataLeafPages++;
                                dataLeafFreeSpace += header->pd_upper - header->pd_lower;
                                ItemPointerSetMin(&minItem);
-                               pfree(GinDataLeafPageGetItems(page, &nlist, minItem));
-                               dataLeafIptrsCount += nlist;
+
+                               ptr = GinDataLeafPageGetItems(page, &nlist, minItem);
+
+                               if (ptr)
+                               {
+                                       pfree(ptr);
+                                       dataLeafIptrsCount += nlist;
+                               }
+                               else
+                                       emptyDataPages++;
                        }
                        else
                        {
@@ -1414,6 +1434,10 @@ gin_statpage(PG_FUNCTION_ARGS)
 
        snprintf(res, sizeof(res),
                         "totalPages:            %u\n"
+#if PG_VERSION_NUM >= 100000
+                        "deletedPages:          %u\n"
+                        "emptyDataPages:        %u\n"
+#endif
                         "dataPages:             %u\n"
                         "dataInnerPages:        %u\n"
                         "dataLeafPages:         %u\n"
@@ -1433,6 +1457,10 @@ gin_statpage(PG_FUNCTION_ARGS)
                         "entryAttrSize:         " INT64_FORMAT "\n"
                         ,
                         totalPages,
+#if PG_VERSION_NUM >= 100000
+                        deletedPages,
+                        emptyDataPages,
+#endif
                         dataPages,
                         dataInnerPages,
                         dataLeafPages,