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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1999 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _GHD_QUEUE_H
#define _GHD_QUEUE_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* A list of singly linked elements
*/
typedef struct L1el {
struct L1el *le_nextp;
void *le_datap;
} L1el_t;
#define L1EL_INIT(lep) ((lep)->le_nextp = NULL, (lep)->le_datap = 0)
typedef struct L1_head {
L1el_t *l1_headp;
L1el_t *l1_tailp;
} L1_t;
#define L1HEADER_INIT(lp) (((lp)->l1_headp = NULL), ((lp)->l1_tailp = NULL))
#define L1_EMPTY(lp) ((lp)->l1_headp == NULL)
void L1_add(L1_t *lp, L1el_t *lep, void *datap);
void L1_delete(L1_t *lp, L1el_t *lep);
void *L1_remove(L1_t *lp);
/*
* A list of doubly linked elements
*/
typedef struct L2el {
struct L2el *l2_nextp;
struct L2el *l2_prevp;
void *l2_private;
} L2el_t;
#define L2_INIT(headp) \
(((headp)->l2_nextp = (headp)), ((headp)->l2_prevp = (headp)))
#define L2_EMPTY(headp) ((headp)->l2_nextp == (headp))
void L2_add(L2el_t *headp, L2el_t *elementp, void *private);
void L2_delete(L2el_t *elementp);
void L2_add_head(L2el_t *headp, L2el_t *elementp, void *private);
void *L2_remove_head(L2el_t *headp);
void *L2_next(L2el_t *elementp);
#ifdef __cplusplus
}
#endif
#endif /* _GHD_QUEUE_H */
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