From 3a90ab685aaae59f242ae31260e67e9125ae78cd Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Mon, 1 Oct 2007 17:42:47 +0000
Subject: Preparation for AVR core support.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@27 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 src/chlists.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 src/chlists.c

(limited to 'src/chlists.c')

diff --git a/src/chlists.c b/src/chlists.c
new file mode 100644
index 000000000..d01c8c37c
--- /dev/null
+++ b/src/chlists.c
@@ -0,0 +1,89 @@
+/*
+    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/>.
+*/
+
+/**
+ * @addtogroup Messages
+ * @{
+ */
+#include <ch.h>
+
+#ifndef CH_OPTIMIZE_SPEED
+/*
+ * Inserts a thread into a FIFO queue.
+ * @param tp the pointer to the thread to be inserted in the list
+ * @param tqp the pointer to the threads list header
+ */
+void fifo_insert(Thread *tp, ThreadsQueue *tqp) {
+
+  tp->p_next = (Thread *)tqp;
+  tp->p_prev = tqp->p_prev;
+  tqp->p_prev->p_next = tp;
+  tqp->p_prev = tp;
+}
+
+/*
+ * Removes a thread from a FIFO queue.
+ * @param tqp the pointer to the threads list header
+ */
+Thread *fifo_remove(ThreadsQueue *tqp) {
+  Thread *tp = tqp->p_next;
+
+  (tqp->p_next = tp->p_next)->p_prev = (Thread *)tqp;
+  return tp;
+}
+
+/*
+ * Removes a Thread from a FIFO list and returns it.
+ * @param tp the pointer to the thread to be removed from the list
+ * @param tqp the pointer to the list header
+ * @return the removed thread pointer
+ */
+Thread *dequeue(Thread *tp) {
+
+  tp->p_prev->p_next = tp->p_next;
+  tp->p_next->p_prev = tp->p_prev;
+  return tp;
+}
+
+/*
+ * Inserts a Thread into a stack list.
+ * @param tp the pointer to the thread to be inserted in the list
+ * @param tlp the pointer to the threads list header
+ */
+void list_insert(Thread *tp, ThreadsList *tlp) {
+
+  tp->p_next = tlp->p_next;
+  tlp->p_next = tp;
+}
+
+
+/*
+ * Removes a Thread from a stack list and returns it.
+ * @param tlp the pointer to the threads list header
+ * @return the removed thread pointer
+ */
+Thread *list_remove(ThreadsList *tlp) {
+
+  Thread *tp = tlp->p_next;
+  tlp->p_next = tp->p_next;
+  return tp;
+}
+#endif /* CH_OPTIMIZE_SPEED */
+
+/** @} */
-- 
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