gsplus/.svn/pristine/f3/f331807d1a0471d21b960d01683808527a53c958.svn-base

/*
GSport - an Apple //gs Emulator
Copyright (C) 2013-2014 by Peter Neubauer

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 the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of 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
*/

struct packet_t
{
	struct at_addr_t dest;
	struct at_addr_t source;
	byte type;
	size_t size;
	byte* data;
	struct packet_t* next;
};

struct packet_queue_t
{
	struct packet_t* head;
	struct packet_t* tail;
};

void queue_init(struct packet_queue_t* queue);
void queue_shutdown(struct packet_queue_t* queue);

void enqueue(struct packet_queue_t* queue, struct at_addr_t dest, struct at_addr_t source, byte type, size_t size, byte data[]);
void enqueue_packet(struct packet_queue_t* queue, struct packet_t* packet);

struct packet_t* dequeue(struct packet_queue_t* queue);
struct packet_t* queue_peek(struct packet_queue_t* queue);

// Insert the packet at the head of the queue, contrary to normal FIFO operation.
void insert(struct packet_queue_t* queue, struct at_addr_t dest, struct at_addr_t source, byte type, size_t size, byte data[]);
void insert_packet(struct packet_queue_t* queue, struct packet_t* packet);



struct packet_port_t
{
	struct packet_queue_t in;
	struct packet_queue_t out;
};

void port_init(struct packet_port_t* port);
void port_shutdown(struct packet_port_t* port);