Ensure that share->tot_locks s updated correctly

This fixes that mysamchk --sort-records works on windows.

myisam/mi_check.c

@@ -1551,7 +1551,7 @@ int mi_sort_index(MI_CHECK *param, register MI_INFO *info, my_string name)
   old_state=share->state;			/* save state if not stored */
   r_locks=share->r_locks; w_locks=share->w_locks;
 	/* Put same locks as old file */
-  share->r_locks=share->w_locks=0;
+  share->r_locks= share->w_locks= share->tot_locks= 0;
   (void) _mi_writeinfo(info,WRITEINFO_UPDATE_KEYFILE);
   VOID(my_close(share->kfile,MYF(MY_WME)));
   share->kfile = -1;
@@ -1564,6 +1564,7 @@ int mi_sort_index(MI_CHECK *param, register MI_INFO *info, my_string name)
   _mi_readinfo(info,F_WRLCK,0);			/* Will lock the table */
   info->lock_type=F_WRLCK;
   share->r_locks=r_locks; share->w_locks=w_locks;
+  share->tot_locks= r_locks+w_locks;
   share->state=old_state;			/* Restore old state */
 
   info->state->key_file_length=param->new_file_pos;
@@ -3139,9 +3140,11 @@ int update_state_info(MI_CHECK *param, MI_INFO *info,uint update)
   {						/* Force update of status */
     int error;
     uint r_locks=share->r_locks,w_locks=share->w_locks;
-    share->r_locks=share->w_locks=0;
+    share->r_locks= share->w_locks= share->tot_locks= 0;
     error=_mi_writeinfo(info,WRITEINFO_NO_UNLOCK);
-    share->r_locks=r_locks; share->w_locks=w_locks;
+    share->r_locks=r_locks;
+    share->w_locks=w_locks;
+    share->tot_locks=r_locks+w_locks;
     if (!error)
       return 0;
   }

myisam/mi_close.c

@@ -29,8 +29,7 @@ int mi_close(register MI_INFO *info)
   MYISAM_SHARE *share=info->s;
   DBUG_ENTER("mi_close");
   DBUG_PRINT("enter",("base: %lx  reopen: %u  locks: %u",
-		      info,(uint) share->reopen,
-		      (uint) (share->w_locks+share->r_locks)));
+		      info,(uint) share->reopen, (uint) share->tot_locks));
 
   pthread_mutex_lock(&THR_LOCK_myisam);
   if (info->lock_type == F_EXTRA_LCK)
@@ -47,7 +46,10 @@ int mi_close(register MI_INFO *info)
   pthread_mutex_lock(&share->intern_lock);
 
   if (share->options & HA_OPTION_READ_ONLY_DATA)
+  {
     share->r_locks--;
+    share->tot_locks--;
+  }
   if (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED))
   {
     if (end_io_cache(&info->rec_cache))

myisam/mi_dynrec.c

@@ -1275,7 +1275,7 @@ int _mi_read_rnd_dynamic_record(MI_INFO *info, byte *buf,
   if (info->lock_type == F_UNLCK)
   {
 #ifndef UNSAFE_LOCKING
-    if (share->r_locks == 0 && share->w_locks == 0)
+    if (share->tot_locks == 0)
     {
       if (my_lock(share->kfile,F_RDLCK,0L,F_TO_EOF,
 		  MYF(MY_SEEK_NOT_DONE) | info->lock_wait))

myisam/mi_open.c

@@ -486,6 +486,7 @@ MI_INFO *mi_open(const char *name, int mode, uint open_flags)
   {
     info.lock_type=F_RDLCK;
     share->r_locks++;
+    share->tot_locks++;
   }
   if ((open_flags & HA_OPEN_TMP_TABLE) ||
       (share->options & HA_OPTION_TMP_TABLE))
@@ -493,6 +494,7 @@ MI_INFO *mi_open(const char *name, int mode, uint open_flags)
     share->temporary=share->delay_key_write=1;
     share->write_flag=MYF(MY_NABP);
     share->w_locks++;			/* We don't have to update status */
+    share->tot_locks++;
     info.lock_type=F_WRLCK;
   }
   if (((open_flags & HA_OPEN_DELAY_KEY_WRITE) ||

myisam/mi_statrec.c

@@ -239,7 +239,7 @@ int _mi_read_rnd_static_record(MI_INFO *info, byte *buf,
     {						/* We don't nead new info */
 #ifndef UNSAFE_LOCKING
       if ((! cache_read || share->base.reclength > cache_length) &&
-	  share->r_locks == 0 && share->w_locks == 0)
+	  share->tot_locks == 0)
       {						/* record not in cache */
 	if (my_lock(share->kfile,F_RDLCK,0L,F_TO_EOF,
 		    MYF(MY_SEEK_NOT_DONE) | info->lock_wait))

myisam/myisamchk.c

@@ -729,6 +729,7 @@ static int myisamchk(MI_CHECK *param, my_string filename)
   }
   share=info->s;
   share->options&= ~HA_OPTION_READ_ONLY_DATA; /* We are modifing it */
+  share->tot_locks-= share->r_locks;
   share->r_locks=0;
   raid_chunks=share->base.raid_chunks;
 
@@ -806,6 +807,7 @@ static int myisamchk(MI_CHECK *param, my_string filename)
       rep_quick|=T_QUICK;
     }
     share=info->s;
+    share->tot_locks-= share->r_locks;
     share->r_locks=0;
   }
 
@@ -835,6 +837,7 @@ static int myisamchk(MI_CHECK *param, my_string filename)
       goto end2;
     }
     share->w_locks++;				/* Mark for writeinfo */
+    share->tot_locks++;
     info->lock_type= F_EXTRA_LCK;		/* Simulate as locked */
     info->tmp_lock_type=lock_type;
     datafile=info->dfile;
@@ -1011,6 +1014,7 @@ static int myisamchk(MI_CHECK *param, my_string filename)
     info->update&= ~HA_STATE_CHANGED;
   }
   share->w_locks--;
+  share->tot_locks--;
 end2:
   if (mi_close(info))
   {