/*********************************************************************
*
* Filename: irqueue.h
* Version: 0.3
* Description: General queue implementation
* Status: Experimental.
* Author: Dag Brattli <[email protected]>
* Created at: Tue Jun 9 13:26:50 1998
* Modified at: Thu Oct 7 13:25:16 1999
* Modified by: Dag Brattli <[email protected]>
*
* Copyright (C) 1998-1999, Aage Kvalnes <[email protected]>
* Copyright (c) 1998, Dag Brattli
* All Rights Reserved.
*
* This code is taken from the Vortex Operating System written by Aage
* Kvalnes and has been ported to Linux and Linux/IR by Dag Brattli
*
* 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.
*
* Neither Dag Brattli nor University of Tromsø admit liability nor
* provide warranty for any of this software. This material is
* provided "AS-IS" and at no charge.
*
********************************************************************/

#include <linux/types.h>
#include <linux/spinlock.h>

#ifndef IRDA_QUEUE_H
#define IRDA_QUEUE_H

#define NAME_SIZE 32

/*
* Hash types (some flags can be xored)
* See comments in irqueue.c for which one to use...
*/
#define HB_NOLOCK 0 /* No concurent access prevention */
#define HB_LOCK 1 /* Prevent concurent write with global lock */

/*
* Hash defines
*/
#define HASHBIN_SIZE 8
#define HASHBIN_MASK 0x7

#ifndef IRDA_ALIGN
#define IRDA_ALIGN __attribute__((aligned))
#endif

#define Q_NULL { NULL, NULL, "", 0 }

typedef void (*FREE_FUNC)(void *arg);

struct irda_queue {
struct irda_queue *q_next;
struct irda_queue *q_prev;

char q_name[NAME_SIZE];
long q_hash; /* Must be able to cast a (void *) */
};
typedef struct irda_queue irda_queue_t;

typedef struct hashbin_t {
__u32 magic;
int hb_type;
int hb_size;
spinlock_t hb_spinlock; /* HB_LOCK - Can be used by the user */

irda_queue_t* hb_queue[HASHBIN_SIZE] IRDA_ALIGN;

irda_queue_t* hb_current;
} hashbin_t;

hashbin_t *hashbin_new(int type);
int hashbin_delete(hashbin_t* hashbin, FREE_FUNC func);
int hashbin_clear(hashbin_t* hashbin, FREE_FUNC free_func);
void hashbin_insert(hashbin_t* hashbin, irda_queue_t* entry, long hashv,
const char* name);
void* hashbin_remove(hashbin_t* hashbin, long hashv, const char* name);
void* hashbin_remove_first(hashbin_t *hashbin);
void* hashbin_remove_this( hashbin_t* hashbin, irda_queue_t* entry);
void* hashbin_find(hashbin_t* hashbin, long hashv, const char* name);
void* hashbin_lock_find(hashbin_t* hashbin, long hashv, const char* name);
void* hashbin_find_next(hashbin_t* hashbin, long hashv, const char* name,
void ** pnext);
irda_queue_t *hashbin_get_first(hashbin_t *hashbin);
irda_queue_t *hashbin_get_next(hashbin_t *hashbin);

#define HASHBIN_GET_SIZE(hashbin) hashbin->hb_size

#endif