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- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: createiorequest.c,v 1.7 1997/01/01 03:46:08 ldp Exp $
- $Log: createiorequest.c,v $
- Revision 1.7 1997/01/01 03:46:08 ldp
- Committed Amiga native (support) code
-
- Changed clib to proto
-
- Revision 1.6 1996/12/10 13:51:41 aros
- Moved all #include's in the first column so makedepend can see it.
-
- Revision 1.5 1996/10/24 15:50:46 aros
- Use the official AROS macros over the __AROS versions.
-
- Revision 1.4 1996/08/13 13:55:59 digulla
- Replaced AROS_LA by AROS_LHA
- Replaced some AROS_LH*I by AROS_LH*
- Sorted and added includes
-
- Revision 1.3 1996/08/01 17:41:08 digulla
- Added standard header for all files
-
- Desc:
- Lang: english
- */
- #include "exec_intern.h"
- #include <exec/io.h>
- #include <exec/ports.h>
- #include <exec/memory.h>
- #include <aros/libcall.h>
- #include <proto/exec.h>
-
- /*****************************************************************************
-
- NAME */
-
- AROS_LH2(struct IORequest *, CreateIORequest,
-
- /* SYNOPSIS */
- AROS_LHA(struct MsgPort *, ioReplyPort, A0),
- AROS_LHA(ULONG, size, D0),
-
- /* LOCATION */
- struct ExecBase *, SysBase, 109, Exec)
-
- /* FUNCTION
- Create an I/O request structure bound to a given messageport.
- I/O requests are normally used to communicate with exec devices
- but can be used as normal messages just as well.
-
- INPUTS
- ioReplyPort - Pointer to that one of your messageports where
- the messages are replied to. A NULL port is legal
- but then the function fails always.
- size - Size of the message structure including the struct
- IORequest header. The minimal allowable size is that
- of a struct Message.
-
- RESULT
- Pointer to a new I/O request structure or NULL if the function
- failed.
-
- NOTES
-
- EXAMPLE
-
- BUGS
-
- SEE ALSO
-
- INTERNALS
-
- HISTORY
-
- ******************************************************************************/
- {
- AROS_LIBFUNC_INIT
-
- struct IORequest *ret=NULL;
-
- /* A NULL ioReplyPort is legal but has no effect */
- if(ioReplyPort==NULL)
- return NULL;
-
- /* Allocate the memory */
- ret=(struct IORequest *)AllocMem(size,MEMF_PUBLIC|MEMF_CLEAR);
-
- if(ret!=NULL)
- {
- /* Initialize it. */
- ret->io_Message.mn_ReplyPort=ioReplyPort;
-
- /* This size is needed to free the memory at DeleteIORequest() time. */
- ret->io_Message.mn_Length=size;
- }
-
- /* All done. */
- return ret;
- AROS_LIBFUNC_EXIT
- } /* CreateIORequest */
-
-