Frazer Legge / mbed-rtos

Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.

Dependents:   Assignment_3__Embedded_Software

Fork of mbed-rtos by mbed official

rtos/Semaphore.cpp@40:bd07334df5b1, 2014-08-15 (annotated)

Committer:
mbed_official
Date:
Fri Aug 15 16:30:22 2014 +0100
Revision:
40:bd07334df5b1
Parent:
36:512640f00564
Child:
123:58563e6cba1e
Synchronized with git revision 601712595f49bbd2a2771c52cf3e84c9c7a591af



Full URL: https://github.com/mbedmicro/mbed/commit/601712595f49bbd2a2771c52cf3e84c9c7a591af/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 8:88a1a9c26ae3 1 /* mbed Microcontroller Library
emilmont 8:88a1a9c26ae3 2 * Copyright (c) 2006-2012 ARM Limited
emilmont 8:88a1a9c26ae3 3 *
emilmont 8:88a1a9c26ae3 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
emilmont 8:88a1a9c26ae3 5 * of this software and associated documentation files (the "Software"), to deal
emilmont 8:88a1a9c26ae3 6 * in the Software without restriction, including without limitation the rights
emilmont 8:88a1a9c26ae3 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
emilmont 8:88a1a9c26ae3 8 * copies of the Software, and to permit persons to whom the Software is
emilmont 8:88a1a9c26ae3 9 * furnished to do so, subject to the following conditions:
emilmont 8:88a1a9c26ae3 10 *
emilmont 8:88a1a9c26ae3 11 * The above copyright notice and this permission notice shall be included in
emilmont 8:88a1a9c26ae3 12 * all copies or substantial portions of the Software.
emilmont 8:88a1a9c26ae3 13 *
emilmont 8:88a1a9c26ae3 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
emilmont 8:88a1a9c26ae3 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
emilmont 8:88a1a9c26ae3 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
emilmont 8:88a1a9c26ae3 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
emilmont 8:88a1a9c26ae3 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
emilmont 8:88a1a9c26ae3 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
emilmont 8:88a1a9c26ae3 20 * SOFTWARE.
emilmont 8:88a1a9c26ae3 21 */
emilmont 8:88a1a9c26ae3 22 #include "Semaphore.h"
emilmont 8:88a1a9c26ae3 23
emilmont 8:88a1a9c26ae3 24 #include <string.h>
emilmont 8:88a1a9c26ae3 25
emilmont 8:88a1a9c26ae3 26 namespace rtos {
emilmont 8:88a1a9c26ae3 27
emilmont 8:88a1a9c26ae3 28 Semaphore::Semaphore(int32_t count) {
emilmont 8:88a1a9c26ae3 29 #ifdef CMSIS_OS_RTX
emilmont 8:88a1a9c26ae3 30 memset(_semaphore_data, 0, sizeof(_semaphore_data));
emilmont 8:88a1a9c26ae3 31 _osSemaphoreDef.semaphore = _semaphore_data;
emilmont 8:88a1a9c26ae3 32 #endif
emilmont 8:88a1a9c26ae3 33 _osSemaphoreId = osSemaphoreCreate(&_osSemaphoreDef, count);
emilmont 8:88a1a9c26ae3 34 }
emilmont 8:88a1a9c26ae3 35
emilmont 8:88a1a9c26ae3 36 int32_t Semaphore::wait(uint32_t millisec) {
emilmont 8:88a1a9c26ae3 37 return osSemaphoreWait(_osSemaphoreId, millisec);
emilmont 8:88a1a9c26ae3 38 }
emilmont 8:88a1a9c26ae3 39
emilmont 8:88a1a9c26ae3 40 osStatus Semaphore::release(void) {
emilmont 8:88a1a9c26ae3 41 return osSemaphoreRelease(_osSemaphoreId);
emilmont 8:88a1a9c26ae3 42 }
emilmont 8:88a1a9c26ae3 43
emilmont 8:88a1a9c26ae3 44 Semaphore::~Semaphore() {
emilmont 8:88a1a9c26ae3 45 osSemaphoreDelete(_osSemaphoreId);
emilmont 8:88a1a9c26ae3 46 }
emilmont 8:88a1a9c26ae3 47
emilmont 8:88a1a9c26ae3 48 }