Shuto Naruse / Eurobot_2012_Primary

IC Eurobot 2012 Program published from Shuto's account

Dependents:   Eurobot2012_Primary

Mutex.h@0:62626fd22b30, 2012-08-07 (annotated)

Committer:
narshu
Date:
Tue Aug 07 10:25:51 2012 +0000
Revision:
0:62626fd22b30
[mbed] converted /Eurobot_2012_Primary/rtos

Who changed what in which revision?

UserRevisionLine numberNew contents of line
narshu 0:62626fd22b30 1 /* Copyright (c) 2012 mbed.org */
narshu 0:62626fd22b30 2 #ifndef MUTEX_H
narshu 0:62626fd22b30 3 #define MUTEX_H
narshu 0:62626fd22b30 4
narshu 0:62626fd22b30 5 #include <stdint.h>
narshu 0:62626fd22b30 6 #include "cmsis_os.h"
narshu 0:62626fd22b30 7
narshu 0:62626fd22b30 8 namespace rtos {
narshu 0:62626fd22b30 9
narshu 0:62626fd22b30 10 /*! The Mutex class is used to synchronise the execution of threads.
narshu 0:62626fd22b30 11 This is for example used to protect access to a shared resource.
narshu 0:62626fd22b30 12 */
narshu 0:62626fd22b30 13 class Mutex {
narshu 0:62626fd22b30 14 public:
narshu 0:62626fd22b30 15 /*! Create and Initialize a Mutex object */
narshu 0:62626fd22b30 16 Mutex();
narshu 0:62626fd22b30 17
narshu 0:62626fd22b30 18 /*! Wait until a Mutex becomes available.
narshu 0:62626fd22b30 19 \param millisec timeout value or 0 in case of no time-out. (default: osWaitForever)
narshu 0:62626fd22b30 20 \return status code that indicates the execution status of the function.
narshu 0:62626fd22b30 21 */
narshu 0:62626fd22b30 22 osStatus lock(uint32_t millisec=osWaitForever);
narshu 0:62626fd22b30 23
narshu 0:62626fd22b30 24 /*! Try to lock the mutex, and return immediately
narshu 0:62626fd22b30 25 \return true if the mutex was acquired, false otherwise.
narshu 0:62626fd22b30 26 */
narshu 0:62626fd22b30 27 bool trylock();
narshu 0:62626fd22b30 28
narshu 0:62626fd22b30 29 /*! Unlock the mutex that has previously been locked by the same thread
narshu 0:62626fd22b30 30 \return status code that indicates the execution status of the function.
narshu 0:62626fd22b30 31 */
narshu 0:62626fd22b30 32 osStatus unlock();
narshu 0:62626fd22b30 33
narshu 0:62626fd22b30 34 private:
narshu 0:62626fd22b30 35 osMutexId _osMutexId;
narshu 0:62626fd22b30 36 osMutexDef_t _osMutexDef;
narshu 0:62626fd22b30 37 #ifdef CMSIS_OS_RTX
narshu 0:62626fd22b30 38 int32_t _mutex_data[3];
narshu 0:62626fd22b30 39 #endif
narshu 0:62626fd22b30 40 };
narshu 0:62626fd22b30 41
narshu 0:62626fd22b30 42 }
narshu 0:62626fd22b30 43 #endif