![](/media/cache/profiles/debfdc81854eac26ec993b55a659c6e1.jpg.50x50_q85.jpg)
mbed client lightswitch demo
Dependencies: mbed Socket lwip-eth lwip-sys lwip
Fork of mbed-client-classic-example-lwip by
mbed-rtos/rtos/Semaphore.h
- Committer:
- mbedAustin
- Date:
- 2016-06-09
- Revision:
- 11:cada08fc8a70
File content as of revision 11:cada08fc8a70:
/* 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