From 1ea7355d85e316aadfd90468b3e808bb3dc95ee9 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sun, 16 Aug 2009 13:07:24 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1073
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/kernel/include/lists.h | 92 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 os/kernel/include/lists.h

(limited to 'os/kernel/include/lists.h')

diff --git a/os/kernel/include/lists.h b/os/kernel/include/lists.h
new file mode 100644
index 000000000..bc3fd7272
--- /dev/null
+++ b/os/kernel/include/lists.h
@@ -0,0 +1,92 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file lists.h
+ * @brief Thread queues/lists macros and structures.
+ * @addtogroup ThreadLists
+ * @{
+ */
+
+#ifndef _LISTS_H_
+#define _LISTS_H_
+
+typedef struct Thread Thread;
+
+/**
+ * Threads queue initialization.
+ */
+#define queue_init(tqp) ((tqp)->p_next = (tqp)->p_prev = (Thread *)(tqp));
+
+/**
+ * Macro evaluating to @p TRUE if the specified threads queue is empty.
+ */
+#define isempty(p)      ((p)->p_next == (Thread *)(p))
+
+/**
+ * Macro evaluating to @p TRUE if the specified threads queue is not empty.
+ */
+#define notempty(p)     ((p)->p_next != (Thread *)(p))
+
+/**
+ * @brief Data part of a static threads queue initializer.
+ * @details This macro should be used when statically initializing a threads
+ *          queue that is part of a bigger structure.
+ * @param name the name of the threads queue variable
+ */
+#define _THREADSQUEUE_DATA(name) {(Thread *)&name, (Thread *)&name}
+
+/**
+ * @brief Static threads queue initializer.
+ * @details Statically initialized threads queues require no explicit
+ *          initialization using @p queue_init().
+ * @param name the name of the threads queue variable
+ */
+#define THREADSQUEUE_DECL(name) ThreadsQueue name = _THREADSQUEUE_DATA(name)
+
+/**
+ * @brief Generic threads bidirectional linked list header and element.
+ * @extends ThreadsList
+ */
+typedef struct {
+  Thread                *p_next;        /**< First @p Thread in the queue, or
+                                             @p ThreadQueue when empty.*/
+  Thread                *p_prev;        /**< Last @p Thread in the queue, or
+                                             @p ThreadQueue when empty.*/
+} ThreadsQueue;
+
+#if !CH_OPTIMIZE_SPEED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void prio_insert(Thread *tp, ThreadsQueue *tqp);
+  void queue_insert(Thread *tp, ThreadsQueue *tqp);
+  Thread *fifo_remove(ThreadsQueue *tqp);
+  Thread *lifo_remove(ThreadsQueue *tqp);
+  Thread *dequeue(Thread *tp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !CH_OPTIMIZE_SPEED */
+
+#endif  /* _LISTS_H_ */
+
+/** @} */
-- 
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