/* Ports.C - Port creating/freeing functions
**
** Herein you will find CreatePort() and DeletePort(). It is quite possible
** that your stdlib already contains these, but just to make sure (and for
** the sake of example), here they are!
**
** This file belongs to the Powerpacker Patcher project
**
** Copyright 1991, Michael Berg
*/

#include <pragmas.h>
#include <exec/types.h>
#include <exec/ports.h>
#include <exec/nodes.h>
#include <exec/memory.h>

/* CreatePort() should exist in the standard library, but here it is, just
** in case your library lacks this function (it isn't in ROM)
*/
struct MsgPort *myCreatePort(register char *name, register pri)
{
	register UBYTE sigbit;
	register struct MsgPort *gotten;

	if
	(
		gotten = (struct MsgPort *)AllocMem
					   (
						sizeof(*gotten),
						MEMF_CLEAR | MEMF_PUBLIC
					   )
	)
	{
		if ((sigbit = AllocSignal(-1)) != -1)
		{
			gotten->mp_Node.ln_Name = name;
			gotten->mp_Node.ln_Pri  = pri;
			gotten->mp_Node.ln_Type = NT_MSGPORT;
			gotten->mp_Flags        = PA_SIGNAL;
			gotten->mp_SigBit       = sigbit;
			gotten->mp_SigTask      = FindTask(0);

			AddPort(gotten);

			return(gotten);
		}
		else
			FreeMem((char *)gotten,sizeof(*gotten));
	}

	return(NULL);
}

/* DeletePort is also supposed to be in your standard library. Here it is,
** just in case...
*/
void myDeletePort(register struct MsgPort *p)
{
	RemPort(p);
	FreeSignal(p->mp_SigBit);
	FreeMem((char *)p,sizeof(*p));
}