compiler/alib/createextio.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8
   9 #include <exec/memory.h>
  10 #include <proto/exec.h>
  11
  12 /*****************************************************************************
  13
  14     NAME */
  15 #include <exec/io.h>
  16 #include <proto/alib.h>
  17
  18         struct IORequest * CreateExtIO (
  19
  20 /*  SYNOPSIS */
  21         struct MsgPort * port,
  22         ULONG            iosize)
  23
  24 /*  FUNCTION
  25         Create an extended IORequest structure. This structure can
  26         be freed with DeleteExtIO().
  27
  28     INPUTS
  29         port - MsgPort to be signaled on events
  30         iosize - Size of the structure
  31
  32     RESULT
  33         A pointer to the new IORequest structure.
  34
  35     NOTES
  36
  37     EXAMPLE
  38
  39     BUGS
  40
  41     SEE ALSO
  42         CreateStdIO(), DeleteExtIO()
  43
  44     INTERNALS
  45
  46     HISTORY
  47
  48 ******************************************************************************/
  49 {
  50     struct IORequest *ioreq=NULL;
  51
  52     if (port && (ioreq = AllocMem (iosize, MEMF_CLEAR|MEMF_PUBLIC)))
  53     {
  54         /* Initialize the structure */
  55         ioreq->io_Message.mn_Node.ln_Type = NT_MESSAGE;
  56         ioreq->io_Message.mn_ReplyPort    = port;
  57         ioreq->io_Message.mn_Length       = iosize;
  58     }
  59
  60     return ioreq;
  61 } /* CreateExtIO */
  62