44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/*
|
|
* Copyright(c) 2006 to 2020 ZettaScale Technology and others
|
|
*
|
|
* This program and the accompanying materials are made available under the
|
|
* terms of the Eclipse Public License v. 2.0 which is available at
|
|
* http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
|
|
* v. 1.0 which is available at
|
|
* http://www.eclipse.org/org/documents/edl-v10.php.
|
|
*
|
|
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
|
|
*/
|
|
#ifndef DDSRT_CIRCLIST_H
|
|
#define DDSRT_CIRCLIST_H
|
|
|
|
/* Circular doubly linked list implementation */
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include "dds/export.h"
|
|
|
|
#if defined (__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define DDSRT_FROM_CIRCLIST(typ_, member_, cle_) ((typ_ *) ((char *) (cle_) - offsetof (typ_, member_)))
|
|
|
|
struct ddsrt_circlist {
|
|
struct ddsrt_circlist_elem *latest; /* pointer to latest inserted element */
|
|
};
|
|
|
|
struct ddsrt_circlist_elem {
|
|
struct ddsrt_circlist_elem *next;
|
|
struct ddsrt_circlist_elem *prev;
|
|
};
|
|
|
|
DDS_EXPORT void ddsrt_circlist_init (struct ddsrt_circlist *list);
|
|
DDS_EXPORT bool ddsrt_circlist_isempty (const struct ddsrt_circlist *list);
|
|
DDS_EXPORT void ddsrt_circlist_append (struct ddsrt_circlist *list, struct ddsrt_circlist_elem *elem);
|
|
DDS_EXPORT void ddsrt_circlist_remove (struct ddsrt_circlist *list, struct ddsrt_circlist_elem *elem);
|
|
DDS_EXPORT struct ddsrt_circlist_elem *ddsrt_circlist_oldest (const struct ddsrt_circlist *list);
|
|
DDS_EXPORT struct ddsrt_circlist_elem *ddsrt_circlist_latest (const struct ddsrt_circlist *list);
|
|
|
|
#endif /* DDSRT_CIRCLIST_H */
|