Diff: api/types/CommandQueue.h

Revision:

29:b6af04b77a56

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/api/types/CommandQueue.h	Mon Oct 27 13:42:26 2014 -0700
@@ -0,0 +1,107 @@
+/**
+ * ACKme WiConnect Host Library is licensed under the BSD licence: 
+ * 
+ * Copyright (c)2014 ACKme Networks.
+ * All rights reserved. 
+ * 
+ * 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. The name of the author may not be used to endorse or promote products 
+ * derived from this software without specific prior written permission. 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+#pragma once
+
+
+#include "api/WiconnectTypes.h"
+
+
+namespace wiconnect
+{
+
+/**
+ * Class for hold queued commands
+ *
+ * @note Internal use only
+ */
+class CommandQueue
+{
+public:
+    /*************************************************************************************************/
+    CommandQueue()
+    {
+        head = tail = queue;
+        count = 0;
+    }
+
+    /*************************************************************************************************/
+    bool isFull()
+    {
+        return count == WICONNECT_MAX_QUEUED_COMMANDS;
+    }
+
+    /*************************************************************************************************/
+    bool isEmpty()
+    {
+        return count == 0;
+    }
+
+    /*************************************************************************************************/
+    bool push(QueuedCommand *cmd)
+    {
+        if(isFull())
+        {
+            return false;
+        }
+        ++count;
+        *tail = cmd;
+        if(++tail >= queue + WICONNECT_MAX_QUEUED_COMMANDS)
+        {
+            tail = queue;
+        }
+
+        return true;
+    }
+
+    /*************************************************************************************************/
+    QueuedCommand* pop()
+    {
+        if(isEmpty())
+            return NULL;
+
+        QueuedCommand* cmd = *head;
+        --count;
+        if(++head >= queue + WICONNECT_MAX_QUEUED_COMMANDS)
+        {
+            head = queue;
+        }
+        return cmd;
+    }
+
+protected:
+    QueuedCommand* queue[WICONNECT_MAX_QUEUED_COMMANDS];
+    QueuedCommand** head;
+    QueuedCommand** tail;
+    int count;
+};
+
+
+
+
+}