From 411e6a635117a17986c22d98176e80c6921f70a6 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sat, 27 Feb 2010 08:40:21 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1678
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/kernel/include/chlists.h | 118 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 os/kernel/include/chlists.h

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

diff --git a/os/kernel/include/chlists.h b/os/kernel/include/chlists.h
new file mode 100644
index 000000000..48841c687
--- /dev/null
+++ b/os/kernel/include/chlists.h
@@ -0,0 +1,118 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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.
+ * @note    All the macros present in this module, while public, are not
+ *          an OS API and should not be directly used in the user applications
+ *          code.
+ *
+ * @addtogroup internals
+ * @{
+ */
+
+#ifndef _LISTS_H_
+#define _LISTS_H_
+
+typedef struct Thread Thread;
+
+/**
+ * @brief   Threads queue initialization.
+ */
+#define queue_init(tqp) ((tqp)->p_next = (tqp)->p_prev = (Thread *)(tqp));
+
+/**
+ * @brief   Threads list initialization.
+ */
+#define list_init(tlp) ((tlp)->p_next = (Thread *)(tlp))
+
+/**
+ * @brief   Evaluates to @p TRUE if the specified threads queue or list is
+ * empty.
+ */
+#define isempty(p)      ((p)->p_next == (Thread *)(p))
+
+/**
+ * @brief   Evaluates to @p TRUE if the specified threads queue or list 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[in] 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[in] name      the name of the threads queue variable
+ */
+#define THREADSQUEUE_DECL(name) ThreadsQueue name = _THREADSQUEUE_DATA(name)
+
+/**
+ * @extends ThreadsList
+ *
+ * @brief   Generic threads bidirectional linked list header and element.
+ */
+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;
+
+/**
+ * @brief   Generic threads single link list, it works like a stack.
+ */
+typedef struct {
+
+  Thread            *p_next;            /**< Last pushed @p Thread on the stack
+                                             list, or pointer to itself if
+                                             empty.                         */
+} ThreadsList;
+
+#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);
+  void list_insert(Thread *tp, ThreadsList *tlp);
+  Thread *list_remove(ThreadsList *tlp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !CH_OPTIMIZE_SPEED */
+
+#endif /* _LISTS_H_ */
+
+/** @} */
-- 
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