Replace wmem slist (singly-linked) with wmem list (doubly-linked).

The overhead is not large, and it makes append much faster (O(1) vs O(n)).

It also will make a queue easy to add, which I need for a dissector I'm
writing...

svn path=/trunk/; revision=50744

1 files changed, 114 insertions, 0 deletions

diff --git a/epan/wmem/wmem_list.h b/epan/wmem/wmem_list.h
new file mode 100644
index 0000000000..cb4cecf2f2
--- /dev/null
+++ b/epan/wmem/wmem_list.h
@@ -0,0 +1,114 @@
+/* wmem_list.h
+ * Definitions for the Wireshark Memory Manager Doubly-Linked List
+ * Copyright 2012, Evan Huus <eapache@gmail.com>
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 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.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __WMEM_LIST_H__
+#define __WMEM_LIST_H__
+
+#include <string.h>
+#include <glib.h>
+
+#include "wmem_core.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** @addtogroup wmem
+ *  @{
+ *    @defgroup wmem-list Doubly-Linked List
+ *
+ *    A doubly-linked list implementation on top of wmem.
+ *
+ *    @{
+ */
+
+struct _wmem_list_t;
+struct _wmem_list_frame_t;
+
+typedef struct _wmem_list_t       wmem_list_t;
+typedef struct _wmem_list_frame_t wmem_list_frame_t;
+
+WS_DLL_PUBLIC
+guint
+wmem_list_count(const wmem_list_t *list);
+
+WS_DLL_PUBLIC
+wmem_list_frame_t *
+wmem_list_head(const wmem_list_t *list);
+
+WS_DLL_PUBLIC
+wmem_list_frame_t *
+wmem_list_tail(const wmem_list_t *list);
+
+WS_DLL_PUBLIC
+wmem_list_frame_t *
+wmem_list_frame_next(const wmem_list_frame_t *frame);
+
+WS_DLL_PUBLIC
+wmem_list_frame_t *
+wmem_list_frame_prev(const wmem_list_frame_t *frame);
+
+WS_DLL_PUBLIC
+void *
+wmem_list_frame_data(const wmem_list_frame_t *frame);
+
+WS_DLL_PUBLIC
+void
+wmem_list_remove(wmem_list_t *list, void *data);
+
+WS_DLL_PUBLIC
+void
+wmem_list_prepend(wmem_list_t *list, void *data);
+
+WS_DLL_PUBLIC
+void
+wmem_list_append(wmem_list_t *list, void *data);
+
+WS_DLL_PUBLIC
+wmem_list_t *
+wmem_list_new(wmem_allocator_t *allocator)
+G_GNUC_MALLOC;
+
+/**   @}
+ *  @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __WMEM_LIST_H__ */
+
+/*
+ * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */