Osmocom Packet control Unit (PCU): Network-side GPRS (RLC/MAC); BTS- or BSC-colocated https://osmocom.org/projects/osmopcu
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osmo-pcu/src/cxx_linuxlist.h

133 lines
3.1 KiB

/* cxx_linuxlist.h
*
* Copyright (C) 2015 by Sysmocom s.f.m.c. GmbH
* Author: Jacob Erlbeck <jerlbeck@sysmocom.de>
*
* 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.
*/
#pragma once
extern "C" {
#include <osmocom/core/linuxlist.h>
}
template <typename T>
struct LListHead {
typedef T entry_t;
/* This must match the declaration of struct llist_head */
LListHead<T> *next;
LListHead<T> *prev;
LListHead() : m_back(0) { INIT_LLIST_HEAD(this); }
LListHead(T* entry) : m_back(entry) {
next = (LListHead<T> *)LLIST_POISON1;
prev = (LListHead<T> *)LLIST_POISON2;
}
T *entry() {return m_back;}
const T *entry() const {return m_back;}
llist_head &llist() {
return *static_cast<llist_head *>(static_cast<void *>(this));
}
const llist_head &llist() const {
return *static_cast<const llist_head *>(static_cast<const void *>(this));
}
private:
T *const m_back;
};
/* Define a family of casting functions */
template <typename T>
llist_head &llist(LListHead<T> &l)
{
return l->llist();
}
template <typename T>
const llist_head &llist(const LListHead<T> &l)
{
return l->llist();
}
template <typename T>
llist_head *llptr(LListHead<T> *l)
{
return &(l->llist());
}
template <typename T>
const llist_head *llptr(const LListHead<T> *l)
{
return &(l->llist());
}
/* Define type-safe wrapper for the existing linux_list.h functions */
template <typename T>
inline void llist_add(LListHead<T> *new_, LListHead<T> *head)
{
llist_add(llptr(new_), llptr(head));
}
template <typename T>
inline void llist_add_tail(LListHead<T> *new_, LListHead<T> *head)
{
llist_add_tail(llptr(new_), llptr(head));
}
template <typename T>
inline void llist_del(LListHead<T> *entry)
{
llist_del(llptr(entry));
}
template <typename T>
inline void llist_del_init(LListHead<T> *entry)
{
llist_del_init(llptr(entry));
}
template <typename T>
inline void llist_move(LListHead<T> *list, LListHead<T> *head)
{
llist_move(llptr(list), llptr(head));
}
template <typename T>
inline void llist_move_tail(LListHead<T> *list, LListHead<T> *head)
{
llist_move_tail(llptr(list), llptr(head));
}
template <typename T>
inline int llist_empty(const LListHead<T> *head)
{
return llist_empty(llptr(head));
}
template <typename T>
inline void llist_splice(LListHead<T> *list, LListHead<T> *head)
{
llist_splice(llptr(list), llptr(head));
}
template <typename T>
inline void llist_splice_init(LListHead<T> *list, LListHead<T> *head)
{
llist_splice_init(llptr(list), llptr(head));
}