my_quick.c 1.94 KB
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/* Copyright (C) 2000 MySQL AB

   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
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   the Free Software Foundation; version 2 of the License.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
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/* Quicker interface to read & write. Used with my_nosys.h */

#include "mysys_priv.h"
#include "my_nosys.h"


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size_t my_quick_read(File Filedes,uchar *Buffer,size_t Count,myf MyFlags)
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{
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  size_t readbytes;
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  if ((readbytes = read(Filedes, Buffer, Count)) != Count)
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  {
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#ifndef DBUG_OFF
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    if ((readbytes == 0 || readbytes == (size_t) -1) && errno == EINTR)
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    {  
      DBUG_PRINT("error", ("my_quick_read() was interrupted and returned %d"
                           ".  This function does not retry the read!",
                           (int) readbytes));
    }
#endif
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    my_errno=errno;
    return readbytes;
  }
  return (MyFlags & (MY_NABP | MY_FNABP)) ? 0 : readbytes;
}


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size_t my_quick_write(File Filedes,const uchar *Buffer,size_t Count)
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{
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#ifndef DBUG_OFF
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  size_t writtenbytes;
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#endif

  if ((
#ifndef DBUG_OFF
       writtenbytes =
#endif
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       (size_t) write(Filedes,Buffer,Count)) != Count)
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  {
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#ifndef DBUG_OFF
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    if ((writtenbytes == 0 || writtenbytes == (size_t) -1) && errno == EINTR)
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    {  
      DBUG_PRINT("error", ("my_quick_write() was interrupted and returned %d"
                           ".  This function does not retry the write!",
                           (int) writtenbytes));
    }
#endif
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    my_errno=errno;
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    return (size_t) -1;
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  }
  return 0;
}