Bug#16588005 REMOVE NO_BACKGROUND AND USE_MY_STREAM IFDEFS

NO_BACKGROUND and USE_MY_STREAM should go away.
They are never set, and thus don't really serve a purpose.

Author: Tor Didriksen

mysys/my_fstream.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -13,8 +13,6 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
-/* USE_MY_STREAM isn't set because we can't thrust my_fclose! */
-
 #include "mysys_priv.h"
 #include "mysys_err.h"
 #include <errno.h>
@@ -98,16 +96,11 @@ size_t my_fwrite(FILE *stream, const uchar *Buffer, size_t Count, myf MyFlags)
 {
   size_t writtenbytes =0;
   my_off_t seekptr;
-#if !defined(NO_BACKGROUND) && defined(USE_MY_STREAM)
-  uint errors;
-#endif
+
   DBUG_ENTER("my_fwrite");
   DBUG_PRINT("my",("stream: 0x%lx  Buffer: 0x%lx  Count: %u  MyFlags: %d",
 		   (long) stream, (long) Buffer, (uint) Count, MyFlags));
 
-#if !defined(NO_BACKGROUND) && defined(USE_MY_STREAM)
-  errors=0;
-#endif
   seekptr= ftell(stream);
   for (;;)
   {
@@ -124,26 +117,11 @@ size_t my_fwrite(FILE *stream, const uchar *Buffer, size_t Count, myf MyFlags)
 	writtenbytes+=written;
 	Count-=written;
       }
-#ifdef EINTR
       if (errno == EINTR)
       {
 	(void) my_fseek(stream,seekptr,MY_SEEK_SET,MYF(0));
 	continue;
       }
-#endif
-#if !defined(NO_BACKGROUND) && defined(USE_MY_STREAM)
-      if (my_thread_var->abort)
-	MyFlags&= ~ MY_WAIT_IF_FULL;		/* End if aborted by user */
-
-      if ((errno == ENOSPC || errno == EDQUOT) &&
-          (MyFlags & MY_WAIT_IF_FULL))
-      {
-        wait_for_free_space("[stream]", errors);
-        errors++;
-        (void) my_fseek(stream,seekptr,MY_SEEK_SET,MYF(0));
-        continue;
-      }
-#endif
       if (ferror(stream) || (MyFlags & (MY_NABP | MY_FNABP)))
       {
         if (MyFlags & (MY_WME | MY_FAE | MY_FNABP))

mysys/my_pread.c

@@ -187,7 +187,6 @@ size_t my_pwrite(File Filedes, const uchar *Buffer, size_t Count,
       offset+= writtenbytes;
     }
     DBUG_PRINT("error",("Write only %u bytes", (uint) writtenbytes));
-#ifndef NO_BACKGROUND
 
     if (my_thread_var->abort)
       MyFlags&= ~ MY_WAIT_IF_FULL;		/* End if aborted by user */
@@ -210,7 +209,6 @@ size_t my_pwrite(File Filedes, const uchar *Buffer, size_t Count,
       /* We may come here if the file quota is exeeded */
       continue;
     }
-#endif
     break;                                  /* Return bytes written */
   }
   if (MyFlags & (MY_NABP | MY_FNABP))

mysys/my_write.c

@@ -79,7 +79,6 @@ size_t my_write(File Filedes, const uchar *Buffer, size_t Count, myf MyFlags)
     my_errno= errno;
     DBUG_PRINT("error",("Write only %ld bytes, error: %d",
 			(long) writtenbytes, my_errno));
-#ifndef NO_BACKGROUND
     if (my_thread_var->abort)
       MyFlags&= ~ MY_WAIT_IF_FULL;		/* End if aborted by user */
 
@@ -106,7 +105,6 @@ size_t my_write(File Filedes, const uchar *Buffer, size_t Count, myf MyFlags)
       /* We may come here if the file quota is exeeded */
       continue;
     }
-#endif
     break;
   }
   if (MyFlags & (MY_NABP | MY_FNABP))