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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-08-16 13:07:24 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-08-16 13:07:24 +0000 |
| commit | 1ea7355d85e316aadfd90468b3e808bb3dc95ee9 (patch) | |
| tree | 7d9c3cd8733553982b9d0a55e1ddff036a6d9b4c /os/kernel/include/lists.h | |
| parent | 51e3bee83961243f5f0ba01537630f5a3d070c36 (diff) | |
| download | ChibiOS-1ea7355d85e316aadfd90468b3e808bb3dc95ee9.tar.gz ChibiOS-1ea7355d85e316aadfd90468b3e808bb3dc95ee9.tar.bz2 ChibiOS-1ea7355d85e316aadfd90468b3e808bb3dc95ee9.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1073 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/kernel/include/lists.h')
| -rw-r--r-- | os/kernel/include/lists.h | 92 |
1 files changed, 92 insertions, 0 deletions
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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