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authorLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
committerLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
commitf44ba092651aa75055e109e04b4164ea92ae7fdc (patch)
tree5dfe076191b32946e78edf64d584d0a65f320013 /src/pulsecore/llist.h
parentdd21f11deda64e65a6f75817496534c2c9dda1a8 (diff)
big s/polyp/pulse/g
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/pulsecore/llist.h')
-rw-r--r--src/pulsecore/llist.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/src/pulsecore/llist.h b/src/pulsecore/llist.h
new file mode 100644
index 00000000..bf3c150a
--- /dev/null
+++ b/src/pulsecore/llist.h
@@ -0,0 +1,79 @@
+#ifndef foollistfoo
+#define foollistfoo
+
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ PulseAudio 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 Lesser General Public
+ License along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+/* Some macros for maintaining doubly linked lists */
+
+/* The head of the linked list. Use this in the structure that shall
+ * contain the head of the linked list */
+#define PA_LLIST_HEAD(t,name) t *name
+
+/* The pointers in the linked list's items. Use this in the item structure */
+#define PA_LLIST_FIELDS(t) t *next, *prev
+
+/* Initialize the list's head */
+#define PA_LLIST_HEAD_INIT(t,item) do { (item) = NULL; } while(0)
+
+/* Initialize a list item */
+#define PA_LLIST_INIT(t,item) do { \
+ t *_item = (item); \
+ assert(_item); \
+ _item->prev = _item->next = NULL; \
+ } while(0)
+
+/* Prepend an item to the list */
+#define PA_LLIST_PREPEND(t,head,item) do { \
+ t **_head = &(head), *_item = (item); \
+ assert(_item); \
+ if ((_item->next = *_head)) \
+ _item->next->prev = _item; \
+ _item->prev = NULL; \
+ *_head = _item; \
+ } while (0)
+
+/* Remove an item from the list */
+#define PA_LLIST_REMOVE(t,head,item) do { \
+ t **_head = &(head), *_item = (item); \
+ assert(_item); \
+ if (_item->next) \
+ _item->next->prev = _item->prev; \
+ if (_item->prev) \
+ _item->prev->next = _item->next; \
+ else {\
+ assert(*_head == _item); \
+ *_head = _item->next; \
+ } \
+ _item->next = _item->prev = NULL; \
+ } while(0)
+
+#define PA_LLIST_FIND_HEAD(t,item,head) \
+do { \
+ t **_head = (head), *_item = (item); \
+ *_head = _item; \
+ assert(_head); \
+ while ((*_head)->prev) \
+ *_head = (*_head)->prev; \
+} while (0) \
+
+
+#endif