import ChibiOS 2.0.8

ChibiOS_2.0.8/os/kernel/include/chmsg.h

@@ -0,0 +1,67 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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/>.
+
+                                      ---
+
+    A special exception to the GPL can be applied should you wish to distribute
+    a combined work that includes ChibiOS/RT, without being obliged to provide
+    the source code for any proprietary components. See the file exception.txt
+    for full details of how and when the exception can be applied.
+*/
+
+/**
+ * @file    chmsg.h
+ * @brief   Messages macros and structures.
+ *
+ * @addtogroup messages
+ * @{
+ */
+
+#ifndef _CHMSG_H_
+#define _CHMSG_H_
+
+#if CH_USE_MESSAGES
+
+/**
+ * @brief   Evaluates to TRUE if the thread has pending messages.
+ */
+#define chMsgIsPendingI(tp) \
+        ((tp)->p_msgqueue.p_next != (Thread *)&(tp)->p_msgqueue)
+
+/**
+ * @brief   Returns the first message in the queue.
+ */
+#define chMsgGetI(tp) \
+        ((tp)->p_msgqueue.p_next->p_msg)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  msg_t chMsgSend(Thread *tp, msg_t msg);
+  msg_t chMsgWait(void);
+  msg_t chMsgGet(void);
+  void chMsgRelease(msg_t msg);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CH_USE_MESSAGES */
+
+#endif /* _CHMSG_H_ */
+
+/** @} */