Lab4 RTOS
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Diff: rtos/Semaphore.h
- Revision:
- 8:88a1a9c26ae3
- Parent:
- 6:350b53afb889
- Child:
- 31:015df9e602b6
--- a/rtos/Semaphore.h Fri Nov 23 10:16:38 2012 +0000 +++ b/rtos/Semaphore.h Tue Nov 27 16:55:38 2012 +0000 @@ -1,40 +1,60 @@ -/* Copyright (c) 2012 mbed.org */ -#ifndef SEMAPHORE_H -#define SEMAPHORE_H - -#include <stdint.h> -#include "cmsis_os.h" - -namespace rtos { - -/*! The Semaphore class is used to manage and protect access to a set of shared resources. */ -class Semaphore { -public: - /*! Create and Initialize a Semaphore object used for managing resources. - \param number of available resources; maximum index value is (count-1). - */ - Semaphore(int32_t count); - - /*! Wait until a Semaphore resource becomes available. - \param millisec timeout value or 0 in case of no time-out. (default: osWaitForever). - \return number of available tokens, or -1 in case of incorrect parameters - */ - int32_t wait(uint32_t millisec=osWaitForever); - - /*! Release a Semaphore resource that was obtain with Semaphore::wait. - \return status code that indicates the execution status of the function. - */ - osStatus release(void); - - ~Semaphore(); - -private: - osSemaphoreId _osSemaphoreId; - osSemaphoreDef_t _osSemaphoreDef; -#ifdef CMSIS_OS_RTX - uint32_t _semaphore_data[2]; -#endif -}; - -} -#endif +/* 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 SEMAPHORE_H +#define SEMAPHORE_H + +#include <stdint.h> +#include "cmsis_os.h" + +namespace rtos { + +/** The Semaphore class is used to manage and protect access to a set of shared resources. */ +class Semaphore { +public: + /** Create and Initialize a Semaphore object used for managing resources. + @param number of available resources; maximum index value is (count-1). + */ + Semaphore(int32_t count); + + /** Wait until a Semaphore resource becomes available. + @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever). + @return number of available tokens, or -1 in case of incorrect parameters + */ + int32_t wait(uint32_t millisec=osWaitForever); + + /** Release a Semaphore resource that was obtain with Semaphore::wait. + @return status code that indicates the execution status of the function. + */ + osStatus release(void); + + ~Semaphore(); + +private: + osSemaphoreId _osSemaphoreId; + osSemaphoreDef_t _osSemaphoreDef; +#ifdef CMSIS_OS_RTX + uint32_t _semaphore_data[2]; +#endif +}; + +} +#endif