From d7ebfbab1c867e15d2a4dc93eb2ccd9316f57abd Mon Sep 17 00:00:00 2001
From: "dlenev@mysql.com" <>
Date: Fri, 12 Dec 2003 03:39:29 +0300
Subject: Fix for Bug #1952 "SHOW TABLE STATUS very slow w/large number of
 tables" Replaced old algorithm which were used in my_dir() and stored all
 information about directory entries in one chunk of memory with new one which
 stores file names and MY_STAT structures in separate memroot, so now we don't
 need to copy this data during reallocation of dir_entry array.

---
 include/my_dir.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'include/my_dir.h')

diff --git a/include/my_dir.h b/include/my_dir.h
index 4ccda050914..851b6d8d7e9 100644
--- a/include/my_dir.h
+++ b/include/my_dir.h
@@ -74,14 +74,21 @@ typedef struct my_stat
 
 #endif /* USE_MY_STAT_STRUCT */
 
-typedef struct fileinfo		/* Struct returned from my_dir & my_stat */
+/* Struct describing one file returned from my_dir */
+typedef struct fileinfo
 {
   char			*name;
-  MY_STAT		mystat;
+  MY_STAT		*mystat;
 } FILEINFO;
 
 typedef struct st_my_dir	/* Struct returned from my_dir */
 {
+  /*
+    These members are just copies of parts of DYNAMIC_ARRAY structure, 
+    which is allocated right after the end of MY_DIR structure (MEM_ROOT
+    for storing names is also resides there). We've left them here because
+    we don't want to change code that uses my_dir.
+  */
   struct fileinfo	*dir_entry;
   uint			number_off_files;
 } MY_DIR;
-- 
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