1ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross/* 2a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn * Copyright (C) 2008-2013 The Android Open Source Project 3ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * 4ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * Licensed under the Apache License, Version 2.0 (the "License"); 5ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * you may not use this file except in compliance with the License. 6ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * You may obtain a copy of the License at 7ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * 8ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * http://www.apache.org/licenses/LICENSE-2.0 9ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * 10ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * Unless required by applicable law or agreed to in writing, software 11ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * distributed under the License is distributed on an "AS IS" BASIS, 12ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * See the License for the specific language governing permissions and 14ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross * limitations under the License. 15ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross */ 16ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 17da04c52ab1036048520fca265cf02b61dca789e0Dima Zavin#ifndef _CUTILS_LIST_H_ 18da04c52ab1036048520fca265cf02b61dca789e0Dima Zavin#define _CUTILS_LIST_H_ 19ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 20b93e5812faffd3b6c5fb349072413aace31918d8Olivier Bailly#include <stddef.h> 210009b73ed88f5c1759c3b2d9df73492d53f79039Kenny Root 2277a62ceac5f1d3942b85b21d86f6b4d25d686190Kenny Root#ifdef __cplusplus 2377a62ceac5f1d3942b85b21d86f6b4d25d686190Kenny Rootextern "C" { 2477a62ceac5f1d3942b85b21d86f6b4d25d686190Kenny Root#endif /* __cplusplus */ 25b93e5812faffd3b6c5fb349072413aace31918d8Olivier Bailly 26ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Crossstruct listnode 27ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross{ 28ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross struct listnode *next; 29ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross struct listnode *prev; 30ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross}; 31ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 32ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#define node_to_item(node, container, member) \ 33ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross (container *) (((char*) (node)) - offsetof(container, member)) 34ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 35ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#define list_declare(name) \ 36ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross struct listnode name = { \ 37ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross .next = &name, \ 38ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross .prev = &name, \ 39ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross } 40ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 41ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#define list_for_each(node, list) \ 42ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross for (node = (list)->next; node != (list); node = node->next) 43ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 4444b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross#define list_for_each_reverse(node, list) \ 4544b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross for (node = (list)->prev; node != (list); node = node->prev) 4644b65d047cc39baf30e21bfd8dd438f6bc1f77f5Colin Cross 478cc74270405bbca5afa989b61c76b554c5b4f5a6Thierry Escande#define list_for_each_safe(node, n, list) \ 488cc74270405bbca5afa989b61c76b554c5b4f5a6Thierry Escande for (node = (list)->next, n = node->next; \ 4930fb83b6e520e0167934b6defe105f2bdd408fd5Andrew Boie node != (list); \ 508cc74270405bbca5afa989b61c76b554c5b4f5a6Thierry Escande node = n, n = node->next) 5130fb83b6e520e0167934b6defe105f2bdd408fd5Andrew Boie 52a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzynstatic inline void list_init(struct listnode *node) 53a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn{ 54a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn node->next = node; 55a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn node->prev = node; 56a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn} 57a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn 58a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzynstatic inline void list_add_tail(struct listnode *head, struct listnode *item) 59a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn{ 60a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn item->next = head; 61a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn item->prev = head->prev; 62a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn head->prev->next = item; 63a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn head->prev = item; 64a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn} 65a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn 66f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortizstatic inline void list_add_head(struct listnode *head, struct listnode *item) 67f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortiz{ 68f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortiz item->next = head->next; 69f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortiz item->prev = head; 70f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortiz head->next->prev = item; 71f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortiz head->next = item; 72f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortiz} 73f8a1089ab5d3976c631cfe7b40eca8a5ed34c306Samuel Ortiz 74a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzynstatic inline void list_remove(struct listnode *item) 75a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn{ 76a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn item->next->prev = item->prev; 77a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn item->prev->next = item->next; 78a6aad4cdb3ec75668838f3eced59bbb2c7b70c59Mark Salyzyn} 79ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 80ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#define list_empty(list) ((list) == (list)->next) 81ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#define list_head(list) ((list)->next) 82ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#define list_tail(list) ((list)->prev) 83ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross 8477a62ceac5f1d3942b85b21d86f6b4d25d686190Kenny Root#ifdef __cplusplus 8577a62ceac5f1d3942b85b21d86f6b4d25d686190Kenny Root}; 8677a62ceac5f1d3942b85b21d86f6b4d25d686190Kenny Root#endif /* __cplusplus */ 870009b73ed88f5c1759c3b2d9df73492d53f79039Kenny Root 88ed8a7d84428ec945c48b6b53dc5a3a18fabaf683Colin Cross#endif 89