summaryrefslogtreecommitdiff
path: root/src/openvpn/circ_list.h
diff options
context:
space:
mode:
authorAlberto Gonzalez Iniesta <agi@inittab.org>2012-11-05 16:28:09 +0100
committerAlberto Gonzalez Iniesta <agi@inittab.org>2012-11-05 16:28:09 +0100
commit8dd0350e1607aa30f7a043c8d5ec7a7eeb874115 (patch)
tree566d0620eb693320cb121dfd93a5675fa704a30b /src/openvpn/circ_list.h
parent349cfa7acb95abe865209a28e417ec74b56f9bba (diff)
Imported Upstream version 2.3_rc1
Diffstat (limited to 'src/openvpn/circ_list.h')
-rw-r--r--src/openvpn/circ_list.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/openvpn/circ_list.h b/src/openvpn/circ_list.h
new file mode 100644
index 0000000..583701a
--- /dev/null
+++ b/src/openvpn/circ_list.h
@@ -0,0 +1,78 @@
+/*
+ * OpenVPN -- An application to securely tunnel IP networks
+ * over a single UDP port, with support for SSL/TLS-based
+ * session authentication and key exchange,
+ * packet encryption, packet authentication, and
+ * packet compression.
+ *
+ * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef CIRC_LIST_H
+#define CIRC_LIST_H
+
+#include "basic.h"
+#include "integer.h"
+#include "error.h"
+
+#define CIRC_LIST(name, type) \
+struct name { \
+ int x_head; \
+ int x_size; \
+ int x_cap; \
+ int x_sizeof; \
+ type x_list[EMPTY_ARRAY_SIZE]; \
+}
+
+#define CIRC_LIST_PUSH(obj, item) \
+{ \
+ (obj)->x_head = modulo_add ((obj)->x_head, -1, (obj)->x_cap); \
+ (obj)->x_list[(obj)->x_head] = (item); \
+ (obj)->x_size = min_int ((obj)->x_size + 1, (obj)->x_cap); \
+}
+
+#define CIRC_LIST_SIZE(obj) \
+ ((obj)->x_size)
+
+#define CIRC_LIST_INDEX(obj, index) \
+ modulo_add ((obj)->x_head, \
+ index_verify ((index), (obj)->x_size, __FILE__, __LINE__), \
+ (obj)->x_cap)
+
+#define CIRC_LIST_ITEM(obj, index) \
+ ((obj)->x_list[CIRC_LIST_INDEX((obj), (index))])
+
+#define CIRC_LIST_RESET(obj) \
+{ \
+ (obj)->x_head = 0; \
+ (obj)->x_size = 0; \
+}
+
+#define CIRC_LIST_ALLOC(dest, list_type, size) \
+{ \
+ const int so = sizeof (list_type) + sizeof ((dest)->x_list[0]) * (size); \
+ (dest) = (list_type *) malloc (so); \
+ check_malloc_return (dest); \
+ memset ((dest), 0, so); \
+ (dest)->x_cap = size; \
+ (dest)->x_sizeof = so; \
+}
+
+#define CIRC_LIST_FREE(dest) \
+ free (dest)
+
+#endif