--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicscomposition/openwfcompositionengine/adaptation/include/owfmessagequeue.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,100 @@
+/* Copyright (c) 2009 The Khronos Group Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and/or associated documentation files (the
+ * "Materials"), to deal in the Materials without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Materials, and to
+ * permit persons to whom the Materials are furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Materials.
+ *
+ * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+ */
+
+#ifndef OWF_MESSAGEQUEUE_H_
+#define OWF_MESSAGEQUEUE_H_
+
+#include "owftypes.h"
+#include "owfsemaphore.h"
+#include "owfmutex.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+typedef struct {
+    OWFuint                 id;
+    void*                   data;
+} OWF_MESSAGE;
+
+typedef struct _MSGQUE {
+    OWFint                  read;
+    OWFint                  write;
+} OWF_MESSAGE_QUEUE;
+
+/*
+ *  Destroy message queue
+ *
+ *  \param queue Message queue to destroy
+ */
+OWF_API_CALL void
+OWF_MessageQueue_Destroy(OWF_MESSAGE_QUEUE* queue);
+
+/*
+ *  Initialize message queue
+ *
+ *  \param queue Message queue to initialize
+ *  \return 0 if initialization succeeded, < 0 otherwise
+ *
+ */
+OWF_API_CALL OWFint
+OWF_MessageQueue_Init(OWF_MESSAGE_QUEUE* queue);
+
+/*
+ *  Insert message into message queue (send it to
+ *  THE other side)
+ *
+ *  \param queue Message queue
+ *  \param msg Message to send
+ *  \param data Message contents
+ *
+ */
+OWF_API_CALL void
+OWF_Message_Send(OWF_MESSAGE_QUEUE* queue,
+                 OWFuint msg,
+                 void* data);
+/*
+ *  Wait for message
+ *
+ *  \param queue Message queue
+ *  \param msg Where to store the received message
+ *  \param timeout Time to wait for the message (microseconds)
+ *
+ *  \return < 0 if error occurred, 0 if no message was received within
+ *  given period of time, > 0 otherwise; received message is stored into
+ *  OWF_MESSAGE structure pointed by the msg param
+ *
+ */
+OWF_API_CALL OWFint
+OWF_Message_Wait(OWF_MESSAGE_QUEUE* queue,
+                 OWF_MESSAGE* msg,
+                 OWFint timeout);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif