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diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtos/Mutex.h b/tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtos/Mutex.h
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+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2012 ARM Limited
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * 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 Software.
+ *
+ * THE SOFTWARE IS 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 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef MUTEX_H
+#define MUTEX_H
+
+#include <stdint.h>
+#include "cmsis_os.h"
+
+namespace rtos {
+
+/** The Mutex class is used to synchronise the execution of threads.
+ This is for example used to protect access to a shared resource.
+*/
+class Mutex {
+public:
+ /** Create and Initialize a Mutex object */
+ Mutex();
+
+ /** Wait until a Mutex becomes available.
+ @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever)
+ @return status code that indicates the execution status of the function.
+ */
+ osStatus lock(uint32_t millisec=osWaitForever);
+
+ /** Try to lock the mutex, and return immediately
+ @return true if the mutex was acquired, false otherwise.
+ */
+ bool trylock();
+
+ /** Unlock the mutex that has previously been locked by the same thread
+ @return status code that indicates the execution status of the function.
+ */
+ osStatus unlock();
+
+ ~Mutex();
+
+private:
+ osMutexId _osMutexId;
+ osMutexDef_t _osMutexDef;
+#ifdef CMSIS_OS_RTX
+ int32_t _mutex_data[3];
+#endif
+};
+
+}
+#endif