/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* |_o_o|\\ Copyright (c) 1990 The Software Distillery.  All Rights Reserved.*/
/* |. o.| || This program may not be distributed without the permission of   */
/* | .  | || the authors.                                                    */
/* | o  | ||                                                                 */
/* |  . |// Written by Doug Walker                                           */
/* ======          BBS:(919)-471-6436      VOICE:(919)-467-4764              */

/*                 BIX: djwalker           USENET: ...!mcnc!rti!sas!walker   */
/*                 405 B3 Gooseneck Dr, Cary, NC 27513, USA                  */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <exec/types.h>
#include <exec/nodes.h>
#include <exec/lists.h>
#include <exec/memory.h>
#include <exec/ports.h>
#include <exec/io.h>
#include <proto/exec.h>

struct IOStdReq * CreateIOReq(struct MsgPort *, int);
void DeleteIOReq(struct IOStdReq *);

struct MsgPort * CreatePort(name, pri)
char *name;
int pri;
{
   UBYTE sigbit;
   register struct MsgPort *port;

   if ((sigbit = AllocSignal(-1)) == -1)
      return((struct MsgPort *)0);

   if ((port = (struct MsgPort *)AllocMem(sizeof(struct MsgPort),
                        MEMF_CLEAR|MEMF_PUBLIC)) == 0)
      {
      FreeSignal(sigbit);
      return((struct MsgPort *) (0));
      }
   port->mp_Node.ln_Name = name;
   port->mp_Node.ln_Pri = pri;
   port->mp_Node.ln_Type = NT_MSGPORT;
   port->mp_Flags = PA_SIGNAL;
   port->mp_SigBit = sigbit;
   port->mp_SigTask = (struct Task *)FindTask(0);
   AddPort(port);
   return(port);
}

void DeletePort(port)
struct MsgPort *port;
{
RemPort(port);
FreeSignal(port->mp_SigBit);
FreeMem((char *)port,sizeof(struct MsgPort));
}

struct IOStdReq *
CreateIOReq(port, size)
struct MsgPort *port;
int size;
{
   struct IOStdReq *ioReq;

   if ((ioReq = (struct IOStdReq *)
                AllocMem(size, MEMF_CLEAR | MEMF_PUBLIC)) != NULL)
      {
      ioReq->io_Message.mn_Node.ln_Type = NT_MESSAGE;
      ioReq->io_Message.mn_Node.ln_Pri  = 0;
      ioReq->io_Message.mn_Length       = size;
      ioReq->io_Message.mn_ReplyPort    = port;
      }
   return(ioReq);
}

void DeleteIOReq(ioReq)
struct IOStdReq *ioReq;
{
ioReq->io_Message.mn_Node.ln_Type = 0xff;
ioReq->io_Device = (struct Device *) -1;
ioReq->io_Unit = (struct Unit *) -1;

FreeMem( (char *)ioReq, ioReq->io_Message.mn_Length);
}