83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
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/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "list.h"
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#include <stdlib.h>
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#include <pthread.h>
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guac_common_list* guac_common_list_alloc() {
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guac_common_list* list = malloc(sizeof(guac_common_list));
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pthread_mutex_init(&list->_lock, NULL);
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list->head = NULL;
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return list;
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}
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void guac_common_list_free(guac_common_list* list) {
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free(list);
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}
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guac_common_list_element* guac_common_list_add(guac_common_list* list,
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void* data) {
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/* Allocate element, initialize as new head */
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guac_common_list_element* element =
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malloc(sizeof(guac_common_list_element));
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element->data = data;
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element->next = list->head;
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element->_ptr = &(list->head);
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/* If head already existed, point it at this element */
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if (list->head != NULL)
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list->head->_ptr = &(element->next);
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/* Set as new head */
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list->head = element;
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return element;
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}
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void guac_common_list_remove(guac_common_list* list,
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guac_common_list_element* element) {
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/* Point previous (or head) to next */
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*(element->_ptr) = element->next;
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element->next->_ptr = element->_ptr;
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free(element);
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}
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void guac_common_list_lock(guac_common_list* list) {
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pthread_mutex_lock(&list->_lock);
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}
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void guac_common_list_unlock(guac_common_list* list) {
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pthread_mutex_unlock(&list->_lock);
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}
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