From e3940eb2080711edac189cca3f642ee89dc215f2 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sat, 17 Feb 2007 23:21:28 +0000
Subject: NuttX RTOS

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/lib/sq_rem.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 nuttx/lib/sq_rem.c

(limited to 'nuttx/lib/sq_rem.c')

diff --git a/nuttx/lib/sq_rem.c b/nuttx/lib/sq_rem.c
new file mode 100644
index 000000000..30a49b9b1
--- /dev/null
+++ b/nuttx/lib/sq_rem.c
@@ -0,0 +1,83 @@
+/************************************************************
+ * sq_rem.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************/
+
+/************************************************************
+ * Compilation Switches
+ ************************************************************/
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+#include <queue.h>
+
+/************************************************************
+ * public Functions
+ ************************************************************/
+
+/************************************************************
+ * Name: sq_rem
+ *
+ * Description:
+ *   sq_rem removes a 'node' for 'queue.'
+ *
+ ************************************************************/
+
+void sq_rem(sq_entry_t *node, sq_queue_t *queue)
+{
+  if (queue->head && node)
+    {
+      if (node == queue->head)
+        {
+          queue->head = node->flink;
+          if (node == queue->tail)
+            {
+              queue->tail = NULL;
+            }
+        }
+      else
+        {
+          sq_entry_t *prev;
+          for(prev = (sq_entry_t*)queue->head;
+              prev && prev->flink != node;
+              prev = prev->flink);
+
+          if (prev)
+            {
+              sq_remafter(prev, queue);
+            }
+        }
+    }
+}
-- 
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