1 files changed, 75 insertions, 0 deletions
diff --git a/plugin/userstat/index_stats.cc b/plugin/userstat/index_stats.cc
new file mode 100644
index 00000000..97305e89
--- /dev/null
+++ b/plugin/userstat/index_stats.cc
@@ -0,0 +1,75 @@
+namespace Show {
+
+static ST_FIELD_INFO index_stats_fields[]=
+{
+  Column("TABLE_SCHEMA", Varchar(NAME_LEN),   NOT_NULL, "Table_schema"),
+  Column("TABLE_NAME",   Varchar(NAME_LEN),   NOT_NULL, "Table_name"),
+  Column("INDEX_NAME",   Varchar(NAME_LEN),   NOT_NULL, "Index_name"),
+  Column("ROWS_READ",    SLonglong(),         NOT_NULL, "Rows_read"),
+  CEnd()
+};
+
+} // namespace Show
+
+static int index_stats_fill(THD *thd, TABLE_LIST *tables, COND *cond)
+{
+  TABLE *table= tables->table;
+
+  mysql_mutex_lock(&LOCK_global_index_stats);
+  for (uint i= 0; i < global_index_stats.records; i++)
+  {
+    INDEX_STATS *index_stats =
+      (INDEX_STATS*) my_hash_element(&global_index_stats, i);
+    TABLE_LIST tmp_table;
+    const char *index_name;
+    size_t index_name_length;
+
+    bzero((char*) &tmp_table,sizeof(tmp_table));
+    tmp_table.db.str=    index_stats->index;
+    tmp_table.db.length= strlen(index_stats->index);
+    tmp_table.table_name.str= index_stats->index + tmp_table.db.length + 1;
+    tmp_table.table_name.length= strlen(tmp_table.table_name.str);
+    tmp_table.grant.privilege= NO_ACL;
+    if (check_access(thd, SELECT_ACL, tmp_table.db.str,
+                      &tmp_table.grant.privilege, NULL, 0, 1) ||
+        check_grant(thd, SELECT_ACL, &tmp_table, 1, 1, 1))
+      continue;
+
+    index_name=         tmp_table.table_name.str + tmp_table.table_name.length + 1;
+    index_name_length=  (index_stats->index_name_length - tmp_table.db.length -
+                         tmp_table.table_name.length - 3);
+
+    table->field[0]->store(tmp_table.db.str, tmp_table.db.length, system_charset_info);
+    table->field[1]->store(tmp_table.table_name.str, tmp_table.table_name.length,
+                           system_charset_info);
+    table->field[2]->store(index_name, (uint) index_name_length, system_charset_info);
+    table->field[3]->store((longlong)index_stats->rows_read, TRUE);
+
+    if (schema_table_store_record(thd, table))
+    {
+      mysql_mutex_unlock(&LOCK_global_index_stats);
+      return 1;
+    }
+  }
+  mysql_mutex_unlock(&LOCK_global_index_stats);
+  return 0;
+}
+
+static int index_stats_reset()
+{
+  mysql_mutex_lock(&LOCK_global_index_stats);
+  free_global_index_stats();
+  init_global_index_stats();
+  mysql_mutex_unlock(&LOCK_global_index_stats);
+  return 0;
+}
+
+static int index_stats_init(void *p)
+{
+  ST_SCHEMA_TABLE *schema= (ST_SCHEMA_TABLE *)p;
+  schema->fields_info= Show::index_stats_fields;
+  schema->fill_table= index_stats_fill;
+  schema->reset_table= index_stats_reset;
+  return 0;
+}
+