Alan Ffrench / Mbed 2 deprecated Experiment_2_5

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Dependencies:   mbed

mbed-rtos/rtos/Mutex.cpp@0:52468b19aa21, 2020-07-29 (annotated)

Committer:
alanffrench
Date:
Wed Jul 29 18:51:38 2020 +0000
Revision:
0:52468b19aa21
Threads

Who changed what in which revision?

UserRevisionLine numberNew contents of line
alanffrench 0:52468b19aa21 1 /* mbed Microcontroller Library
alanffrench 0:52468b19aa21 2 * Copyright (c) 2006-2012 ARM Limited
alanffrench 0:52468b19aa21 3 *
alanffrench 0:52468b19aa21 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
alanffrench 0:52468b19aa21 5 * of this software and associated documentation files (the "Software"), to deal
alanffrench 0:52468b19aa21 6 * in the Software without restriction, including without limitation the rights
alanffrench 0:52468b19aa21 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
alanffrench 0:52468b19aa21 8 * copies of the Software, and to permit persons to whom the Software is
alanffrench 0:52468b19aa21 9 * furnished to do so, subject to the following conditions:
alanffrench 0:52468b19aa21 10 *
alanffrench 0:52468b19aa21 11 * The above copyright notice and this permission notice shall be included in
alanffrench 0:52468b19aa21 12 * all copies or substantial portions of the Software.
alanffrench 0:52468b19aa21 13 *
alanffrench 0:52468b19aa21 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
alanffrench 0:52468b19aa21 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
alanffrench 0:52468b19aa21 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
alanffrench 0:52468b19aa21 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
alanffrench 0:52468b19aa21 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
alanffrench 0:52468b19aa21 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
alanffrench 0:52468b19aa21 20 * SOFTWARE.
alanffrench 0:52468b19aa21 21 */
alanffrench 0:52468b19aa21 22 #include "Mutex.h"
alanffrench 0:52468b19aa21 23
alanffrench 0:52468b19aa21 24 #include <string.h>
alanffrench 0:52468b19aa21 25 #include "error.h"
alanffrench 0:52468b19aa21 26
alanffrench 0:52468b19aa21 27 namespace rtos {
alanffrench 0:52468b19aa21 28
alanffrench 0:52468b19aa21 29 Mutex::Mutex() {
alanffrench 0:52468b19aa21 30 #ifdef CMSIS_OS_RTX
alanffrench 0:52468b19aa21 31 memset(_mutex_data, 0, sizeof(_mutex_data));
alanffrench 0:52468b19aa21 32 _osMutexDef.mutex = _mutex_data;
alanffrench 0:52468b19aa21 33 #endif
alanffrench 0:52468b19aa21 34 _osMutexId = osMutexCreate(&_osMutexDef);
alanffrench 0:52468b19aa21 35 if (_osMutexId == NULL) {
alanffrench 0:52468b19aa21 36 error("Error initializing the mutex object\n");
alanffrench 0:52468b19aa21 37 }
alanffrench 0:52468b19aa21 38 }
alanffrench 0:52468b19aa21 39
alanffrench 0:52468b19aa21 40 osStatus Mutex::lock(uint32_t millisec) {
alanffrench 0:52468b19aa21 41 return osMutexWait(_osMutexId, millisec);
alanffrench 0:52468b19aa21 42 }
alanffrench 0:52468b19aa21 43
alanffrench 0:52468b19aa21 44 bool Mutex::trylock() {
alanffrench 0:52468b19aa21 45 return (osMutexWait(_osMutexId, 0) == osOK);
alanffrench 0:52468b19aa21 46 }
alanffrench 0:52468b19aa21 47
alanffrench 0:52468b19aa21 48 osStatus Mutex::unlock() {
alanffrench 0:52468b19aa21 49 return osMutexRelease(_osMutexId);
alanffrench 0:52468b19aa21 50 }
alanffrench 0:52468b19aa21 51
alanffrench 0:52468b19aa21 52 Mutex::~Mutex() {
alanffrench 0:52468b19aa21 53 osMutexDelete(_osMutexId);
alanffrench 0:52468b19aa21 54 }
alanffrench 0:52468b19aa21 55
alanffrench 0:52468b19aa21 56 }