forked from osmocom/wireshark
202 lines
4.0 KiB
C
202 lines
4.0 KiB
C
/* wmem_list.c
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* Wireshark Memory Manager Doubly-Linked List
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* Copyright 2012, Evan Huus <eapache@gmail.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <string.h>
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#include <glib.h>
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#include "wmem_core.h"
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#include "wmem_list.h"
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struct _wmem_list_frame_t {
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struct _wmem_list_frame_t *next, *prev;
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void *data;
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};
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struct _wmem_list_t {
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guint count;
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wmem_list_frame_t *head, *tail;
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wmem_allocator_t *allocator;
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};
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guint
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wmem_list_count(const wmem_list_t *list)
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{
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return list->count;
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}
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wmem_list_frame_t *
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wmem_list_head(const wmem_list_t *list)
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{
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return list->head;
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}
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wmem_list_frame_t *
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wmem_list_tail(const wmem_list_t *list)
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{
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return list->tail;
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}
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wmem_list_frame_t *
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wmem_list_frame_next(const wmem_list_frame_t *frame)
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{
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return frame->next;
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}
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wmem_list_frame_t *
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wmem_list_frame_prev(const wmem_list_frame_t *frame)
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{
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return frame->prev;
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}
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void *
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wmem_list_frame_data(const wmem_list_frame_t *frame)
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{
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return frame->data;
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}
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void
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wmem_list_remove(wmem_list_t *list, void *data)
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{
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wmem_list_frame_t *frame;
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frame = list->head;
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while (frame && frame->data != data) {
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frame = frame->next;
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}
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if (frame == NULL) {
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return;
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}
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wmem_list_remove_frame(list, frame);
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}
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void
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wmem_list_remove_frame(wmem_list_t *list, wmem_list_frame_t *frame)
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{
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if (frame->prev) {
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frame->prev->next = frame->next;
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}
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else {
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list->head = frame->next;
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}
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if (frame->next) {
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frame->next->prev = frame->prev;
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}
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else {
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list->tail = frame->prev;
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}
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list->count--;
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wmem_free(list->allocator, frame);
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}
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void
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wmem_list_prepend(wmem_list_t *list, void *data)
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{
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wmem_list_frame_t *new_frame;
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new_frame = wmem_new(list->allocator, wmem_list_frame_t);
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new_frame->data = data;
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new_frame->next = list->head;
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new_frame->prev = NULL;
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if (list->head) {
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list->head->prev = new_frame;
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}
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else {
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list->tail = new_frame;
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}
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list->head = new_frame;
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list->count++;
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}
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void
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wmem_list_append(wmem_list_t *list, void *data)
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{
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wmem_list_frame_t *new_frame;
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new_frame = wmem_new(list->allocator, wmem_list_frame_t);
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new_frame->data = data;
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new_frame->next = NULL;
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new_frame->prev = list->tail;
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if (list->tail) {
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list->tail->next = new_frame;
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}
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else {
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list->head = new_frame;
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}
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list->tail = new_frame;
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list->count++;
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}
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wmem_list_t *
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wmem_list_new(wmem_allocator_t *allocator)
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{
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wmem_list_t *list;
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list = wmem_new(allocator, wmem_list_t);
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list->count = 0;
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list->head = NULL;
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list->tail = NULL;
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list->allocator = allocator;
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return list;
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}
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void
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wmem_destroy_list(wmem_list_t *list)
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{
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wmem_list_frame_t *cur, *next;
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cur = list->head;
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while (cur) {
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next = cur->next;
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wmem_free(list->allocator, cur);
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cur = next;
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}
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wmem_free(list->allocator, list);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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