| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include "config.h" |
| #include "common/list.h" |
| |
| #include <stdlib.h> |
| #include <pthread.h> |
| |
| guac_common_list* guac_common_list_alloc() { |
| |
| guac_common_list* list = malloc(sizeof(guac_common_list)); |
| |
| pthread_mutex_init(&list->_lock, NULL); |
| list->head = NULL; |
| |
| return list; |
| |
| } |
| |
| void guac_common_list_free(guac_common_list* list) { |
| free(list); |
| } |
| |
| guac_common_list_element* guac_common_list_add(guac_common_list* list, |
| void* data) { |
| |
| /* Allocate element, initialize as new head */ |
| guac_common_list_element* element = |
| malloc(sizeof(guac_common_list_element)); |
| element->data = data; |
| element->next = list->head; |
| element->_ptr = &(list->head); |
| |
| /* If head already existed, point it at this element */ |
| if (list->head != NULL) |
| list->head->_ptr = &(element->next); |
| |
| /* Set as new head */ |
| list->head = element; |
| return element; |
| |
| } |
| |
| void guac_common_list_remove(guac_common_list* list, |
| guac_common_list_element* element) { |
| |
| /* Point previous (or head) to next */ |
| *(element->_ptr) = element->next; |
| |
| if (element->next != NULL) |
| element->next->_ptr = element->_ptr; |
| |
| free(element); |
| |
| } |
| |
| void guac_common_list_lock(guac_common_list* list) { |
| pthread_mutex_lock(&list->_lock); |
| } |
| |
| void guac_common_list_unlock(guac_common_list* list) { |
| pthread_mutex_unlock(&list->_lock); |
| } |
| |