/*
- * Version $Id$
- */
+ Bacula® - The Network Backup Solution
-/*
- Copyright (C) 2000-2003 Kern Sibbald and John Walker
+ Copyright (C) 2004-2007 Free Software Foundation Europe e.V.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
+ 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.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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 along with this program; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
+ You should have received a copy of the GNU 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.
+ The licensor of Bacula is the Free Software Foundation Europe
+ (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+ Switzerland, email:ftf@fsfeurope.org.
+*/
+/*
+ * Written by Kern Sibbald MMIV
+ *
+ * Version $Id$
*/
+
/* ========================================================================
- *
+ *
* Doubly linked list -- dlist
+ *
+ * See the end of the file for the dlistString class which
+ * facilitates storing strings in a dlist.
+ *
+ * Kern Sibbald, MMIV and MMVII
*
*/
+#define M_ABORT 1
+
/* In case you want to specifically specify the offset to the link */
-#define OFFSET(item, link) ((char *)(link) - (char *)(item))
-/*
+#define OFFSET(item, link) (int)((char *)(link) - (char *)(item))
+/*
* There is a lot of extra casting here to work around the fact
* that some compilers (Sun and Visual C++) do not accept
* (void *) as an lvalue on the left side of an equal.
*
* Loop var through each member of list
*/
+#ifdef HAVE_TYPEOF
#define foreach_dlist(var, list) \
- for((var)=NULL; (*((void **)&(var))=(void*)((list)->next(var))); )
-
-#ifdef the_old_way
+ for((var)=NULL; ((var)=(typeof(var))(list)->next(var)); )
+#else
#define foreach_dlist(var, list) \
- for((var)=NULL; (((void *)(var))=(list)->next(var)); )
+ for((var)=NULL; (*((void **)&(var))=(void*)((list)->next(var))); )
#endif
struct dlink {
void *prev;
};
-
-class dlist {
+class dlist : public SMARTALLOC {
void *head;
void *tail;
- uint16_t loffset;
+ int16_t loffset;
uint32_t num_items;
public:
- dlist(void *item, void *link);
- void init(void *item, void *link);
+ dlist(void *item, dlink *link);
+ dlist(void);
+ ~dlist() { destroy(); }
+ void init(void *item, dlink *link);
void prepend(void *item);
void append(void *item);
+ void set_prev(void *item, void *prev);
+ void set_next(void *item, void *next);
void insert_before(void *item, void *where);
void insert_after(void *item, void *where);
- void *dlist::binary_insert(void *item, int compare(void *item1, void *item2));
+ void *binary_insert(void *item, int compare(void *item1, void *item2));
+ void *binary_search(void *item, int compare(void *item1, void *item2));
+ void binary_insert_multiple(void *item, int compare(void *item1, void *item2));
void remove(void *item);
- bool empty();
- int size();
- void *next(void *item);
- void *prev(void *item);
+ bool empty() const;
+ int size() const;
+ void *next(const void *item) const;
+ void *prev(const void *item) const;
void destroy();
- void *first();
- void *last();
- void * operator new(size_t);
- void operator delete(void *);
+ void *first() const;
+ void *last() const;
};
-/*
+
+/*
* This allows us to do explicit initialization,
* allowing us to mix C++ classes inside malloc'ed
* C structures. Define before called in constructor.
*/
-inline void dlist::init(void *item, void *link)
+inline void dlist::init(void *item, dlink *link)
{
head = tail = NULL;
- loffset = (char *)link - (char *)item;
+ loffset = (int)((char *)link - (char *)item);
+ if (loffset < 0 || loffset > 5000) {
+ Emsg0(M_ABORT, 0, "Improper dlist initialization.\n");
+ }
num_items = 0;
}
-/* Constructor */
-inline dlist::dlist(void *item, void *link)
+/*
+ * Constructor called with the address of a
+ * member of the list (not the list head), and
+ * the address of the link within that member.
+ * If the link is at the beginning of the list member,
+ * then there is no need to specify the link address
+ * since the offset is zero.
+ */
+inline dlist::dlist(void *item, dlink *link)
+{
+ init(item, link);
+}
+
+/* Constructor with link at head of item */
+inline dlist::dlist(void) : head(0), tail(0), loffset(0), num_items(0)
{
- this->init(item, link);
}
-inline bool dlist::empty()
+inline void dlist::set_prev(void *item, void *prev)
{
- return head == NULL;
+ ((dlink *)(((char *)item)+loffset))->prev = prev;
}
-inline int dlist::size()
+inline void dlist::set_next(void *item, void *next)
{
- return num_items;
+ ((dlink *)(((char *)item)+loffset))->next = next;
}
-
-inline void * dlist::operator new(size_t)
+
+
+inline bool dlist::empty() const
{
- return malloc(sizeof(dlist));
+ return head == NULL;
}
-inline void dlist::operator delete(void *item)
+inline int dlist::size() const
{
- ((dlist *)item)->destroy();
- free(item);
+ return num_items;
}
-
-inline void * dlist::first()
+
+
+inline void * dlist::first() const
{
return head;
}
-inline void * dlist::last()
+inline void * dlist::last() const
{
return tail;
}
+
+/*
+ * C string helper routines for dlist
+ * The string (char *) is kept in the node
+ *
+ * Kern Sibbald, February 2007
+ *
+ */
+class dlistString : public dlink
+{
+public:
+ char *c_str() { return m_str; };
+
+private:
+ char m_str[1];
+ /* !!! Don't put anything after this as this space is used
+ * to hold the string in inline
+ */
+};
+
+extern dlistString *new_dlistString(const char *str, int len);
+extern dlistString *new_dlistString(const char *str);
projects / bacula / bacula / blobdiff