-/*
- * Bacula doubly linked list routines.
- *
- * dlist is a doubly linked list with the links being in the
- * list data item.
- *
- * Kern Sibbald, July MMIII
- *
- * Version $Id$
- *
- */
/*
Bacula® - The Network Backup Solution
- Copyright (C) 2003-2006 Free Software Foundation Europe e.V.
+ Copyright (C) 2003-2011 Free Software Foundation Europe e.V.
The main author of Bacula is Kern Sibbald, with contributions from
many others, a complete list can be found in the file AUTHORS.
This program is Free Software; you can redistribute it and/or
- modify it under the terms of version two of the GNU General Public
- License as published by the Free Software Foundation plus additions
- that are listed in the file LICENSE.
+ modify it under the terms of version three of the GNU Affero General Public
+ License as published by the Free Software Foundation and included
+ in the file LICENSE.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Bacula® is a registered trademark of John Walker.
+ Bacula® is a registered trademark of Kern Sibbald.
The licensor of Bacula is the Free Software Foundation Europe
(FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
Switzerland, email:ftf@fsfeurope.org.
*/
+/*
+ * Bacula doubly linked list routines.
+ *
+ * dlist is a doubly linked list with the links being in the
+ * list data item.
+ *
+ * Kern Sibbald, July MMIII
+ *
+ */
#include "bacula.h"
*/
void dlist::append(void *item)
{
- ((dlink *)(((char *)item)+loffset))->next = NULL;
- ((dlink *)(((char *)item)+loffset))->prev = tail;
+ set_next(item, NULL);
+ set_prev(item, tail);
if (tail) {
- ((dlink *)(((char *)tail)+loffset))->next = item;
+ set_next(tail, item);
}
tail = item;
if (head == NULL) { /* if empty list, */
*/
void dlist::prepend(void *item)
{
- ((dlink *)(((char *)item)+loffset))->next = head;
- ((dlink *)(((char *)item)+loffset))->prev = NULL;
+ set_next(item, head);
+ set_prev(item, NULL);
if (head) {
- ((dlink *)(((char *)head)+loffset))->prev = item;
+ set_prev(head, item);
}
head = item;
if (tail == NULL) { /* if empty list, */
void dlist::insert_before(void *item, void *where)
{
- dlink *where_link = (dlink *)((char *)where+loffset);
+ dlink *where_link = get_link(where);
- ((dlink *)(((char *)item)+loffset))->next = where;
- ((dlink *)(((char *)item)+loffset))->prev = where_link->prev;
+ set_next(item, where);
+ set_prev(item, where_link->prev);
if (where_link->prev) {
- ((dlink *)(((char *)(where_link->prev))+loffset))->next = item;
+ set_next(where_link->prev, item);
}
where_link->prev = item;
if (head == where) {
void dlist::insert_after(void *item, void *where)
{
- dlink *where_link = (dlink *)((char *)where+loffset);
+ dlink *where_link = get_link(where);
- ((dlink *)(((char *)item)+loffset))->next = where_link->next;
- ((dlink *)(((char *)item)+loffset))->prev = where;
+ set_next(item, where_link->next);
+ set_prev(item, where);
if (where_link->next) {
- ((dlink *)(((char *)(where_link->next))+loffset))->prev = item;
+ set_prev(where_link->next, item);
}
where_link->next = item;
if (tail == where) {
void dlist::remove(void *item)
{
void *xitem;
- dlink *ilink = (dlink *)(((char *)item)+loffset); /* item's link */
+ dlink *ilink = get_link(item); /* item's link */
if (item == head) {
head = ilink->next;
if (head) {
- ((dlink *)(((char *)head)+loffset))->prev = NULL;
+ set_prev(head, NULL);
}
if (item == tail) {
tail = ilink->prev;
} else if (item == tail) {
tail = ilink->prev;
if (tail) {
- ((dlink *)(((char *)tail)+loffset))->next = NULL;
+ set_next(tail, NULL);
}
} else {
xitem = ilink->next;
- ((dlink *)(((char *)xitem)+loffset))->prev = ilink->prev;
+ set_prev(xitem, ilink->prev);
xitem = ilink->prev;
- ((dlink *)(((char *)xitem)+loffset))->next = ilink->next;
+ set_next(xitem, ilink->next);
}
num_items--;
if (num_items == 0) {
}
}
-void * dlist::next(const void *item) const
+void *dlist::next(void *item)
{
if (item == NULL) {
return head;
}
- return ((dlink *)(((char *)item)+loffset))->next;
+ return get_next(item);
}
-void * dlist::prev(const void *item) const
+void *dlist::prev(void *item)
{
if (item == NULL) {
return tail;
}
- return ((dlink *)(((char *)item)+loffset))->prev;
+ return get_prev(item);
}
void dlist::destroy()
{
for (void *n=head; n; ) {
- void *ni = ((dlink *)(((char *)n)+loffset))->next;
+ void *ni = get_next(n);
free(n);
n = ni;
}
head = tail = NULL;
}
+/* String helpers for dlist usage */
+
+dlistString *new_dlistString(const char *str)
+{
+ return new_dlistString(str, strlen(str));
+}
+dlistString *new_dlistString(const char *str, int len)
+{
+ dlistString *node;
+ node = (dlistString *)malloc(sizeof(dlink) + len +1);
+ bstrncpy(node->c_str(), str, len + 1);
+ return node;
+}
#ifdef TEST_PROGRAM
MYJCR *jcr1;
MYJCR *save_jcr = NULL;
MYJCR *next_jcr;
+ int count;
jcr_chain = (dlist *)malloc(sizeof(dlist));
jcr_chain->init(jcr, &jcr->link);
jcr_chain->destroy();
free(jcr_chain);
+ /* The following may seem a bit odd, but we create a chaing
+ * of jcr objects. Within a jcr object, there is a buf
+ * that points to a malloced string containing data
+ */
jcr_chain = New(dlist(jcr, &jcr->link));
printf("append 20 items 0-19\n");
for (int i=0; i<20; i++) {
#define CNT 26
printf("append %d items\n", CNT*CNT*CNT);
strcpy(buf, "ZZZ");
- int count = 0;
+ count = 0;
for (int i=0; i<CNT; i++) {
for (int j=0; j<CNT; j++) {
for (int k=0; k<CNT; k++) {
}
delete jcr_chain;
+ /* Finally, do a test using the dlistString string helper, which
+ * allocates a dlist node and stores the string directly in
+ * it.
+ */
+ dlist chain;
+ chain.append(new_dlistString("This is a long test line"));
+#define CNT 26
+ printf("append %d dlistString items\n", CNT*CNT*CNT);
+ strcpy(buf, "ZZZ");
+ count = 0;
+ for (int i=0; i<CNT; i++) {
+ for (int j=0; j<CNT; j++) {
+ for (int k=0; k<CNT; k++) {
+ count++;
+ if ((count & 0x3FF) == 0) {
+ Dmsg1(000, "At %d\n", count);
+ }
+ chain.append(new_dlistString(buf));
+ buf[1]--;
+ }
+ buf[1] = 'Z';
+ buf[2]--;
+ }
+ buf[2] = 'Z';
+ buf[0]--;
+ }
+ printf("dlistString items appended, walking chain\n");
+ dlistString *node;
+ foreach_dlist(node, &chain) {
+ printf("%s\n", node->c_str());
+ }
+ printf("destroy dlistString chain\n");
+ chain.destroy();
- sm_dump(false);
+ sm_dump(false); /* unit test */
}
#endif