[Bf-blender-cvs] [779860d34e2] master: readfile: disable delayed data reading for WIN32

[Campbell Barton]

Commit: 779860d34e26bedfb24904bc6261db5cbe9afdbf
Author: Campbell Barton
Date:   Sat Feb 23 09:21:12 2019 +1100
Branches: master
https://developer.blender.org/rB779860d34e26bedfb24904bc6261db5cbe9afdbf

readfile: disable delayed data reading for WIN32

Seeking the file causes slow down on Windows.

Resolves T61855

===================================================================

M	source/blender/blenloader/intern/readfile.c

===================================================================

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index ec30ccd7517..ca36deeaa80 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -225,7 +225,9 @@
 /**
  * Delay reading blocks we might not use (especially applies to library linking).
  * which keeps large arrays in memory from data-blocks we may not even use. */
-#define USE_BHEAD_READ_ON_DEMAND
+#if !defined(_WIN32)  /* Slow on windows, see: T61855 */
+#  define USE_BHEAD_READ_ON_DEMAND
+#endif
 
 /* use GHash for BHead name-based lookups (speeds up linking) */
 #define USE_GHASH_BHEAD