1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <cutils/list.h> 18 19 void list_init(struct listnode *node) 20 { 21 node->next = node; 22 node->prev = node; 23 } 24 25 void list_add_tail(struct listnode *head, struct listnode *item) 26 { 27 item->next = head; 28 item->prev = head->prev; 29 head->prev->next = item; 30 head->prev = item; 31 } 32 33 void list_remove(struct listnode *item) 34 { 35 item->next->prev = item->prev; 36 item->prev->next = item->next; 37 } 38
