/* 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. */ #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)); }