bk commit into 4.1 tree (svoj:1.2651) BUG#25712

[Sergey Vojtovich]

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ChangeSet@stripped, 2007-05-17 12:43:52+05:00, svoj@stripped +1 -0
  Addition to fix for
  BUG#25712 - insert delayed and check table run together report
              crashed tables
  
  Let MY_THREADSAFE have distinct value. Some functions call my_seek
  passing MyFlags argument directly to it. This may cause unnecessary
  locks, which may finally lead to a dead-lock (specifically see my_lock).

  include/my_sys.h@stripped, 2007-05-17 12:43:51+05:00, svoj@stripped +1 -1
    Addition to fix for
    BUG#25712 - insert delayed and check table run together report
                crashed tables
    
    Let MY_THREADSAFE have distinct value. Some functions call my_seek
    passing MyFlags argument directly to it. This may cause unnecessary
    locks, which may finally lead to a dead-lock (specifically see my_lock).
    
    Also it doesn't affect my_pread/my_pwrite in any way. So the comment was
    updated.

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	svoj
# Host:	june.mysql.com
# Root:	/home/svoj/devel/mysql/BUG25712/mysql-4.1-engines

--- 1.146/include/my_sys.h	2006-10-12 01:28:02 +05:00
+++ 1.147/include/my_sys.h	2007-05-17 12:43:51 +05:00
@@ -73,8 +73,8 @@ extern int NEAR my_errno;		/* Last error
 #define MY_ALLOW_ZERO_PTR 64	/* my_realloc() ; zero ptr -> malloc */
 #define MY_FREE_ON_ERROR 128	/* my_realloc() ; Free old ptr on error */
 #define MY_HOLD_ON_ERROR 256	/* my_realloc() ; Return old ptr on error */
-#define MY_THREADSAFE	128	/* pread/pwrite:  Don't allow interrupts */
 #define MY_DONT_OVERWRITE_FILE 1024	/* my_copy; Don't overwrite file */
+#define MY_THREADSAFE 2048      /* my_seek(): lock fd mutex */
 
 #define MY_CHECK_ERROR	1	/* Params to my_end; Check open-close */
 #define MY_GIVE_INFO	2	/* Give time info about process*/