Greg Steiert / maxim_dev

Maxim mbed development library

Dependents:   sensomed

rtos/Mutex.cpp@0:0e018d759a2a, 2016-11-08 (annotated)

Committer:
switches
Date:
Tue Nov 08 18:27:11 2016 +0000
Revision:
0:0e018d759a2a
Initial commit

Who changed what in which revision?

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switches 0:0e018d759a2a 1 /* mbed Microcontroller Library
switches 0:0e018d759a2a 2 * Copyright (c) 2006-2012 ARM Limited
switches 0:0e018d759a2a 3 *
switches 0:0e018d759a2a 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
switches 0:0e018d759a2a 5 * of this software and associated documentation files (the "Software"), to deal
switches 0:0e018d759a2a 6 * in the Software without restriction, including without limitation the rights
switches 0:0e018d759a2a 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
switches 0:0e018d759a2a 8 * copies of the Software, and to permit persons to whom the Software is
switches 0:0e018d759a2a 9 * furnished to do so, subject to the following conditions:
switches 0:0e018d759a2a 10 *
switches 0:0e018d759a2a 11 * The above copyright notice and this permission notice shall be included in
switches 0:0e018d759a2a 12 * all copies or substantial portions of the Software.
switches 0:0e018d759a2a 13 *
switches 0:0e018d759a2a 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
switches 0:0e018d759a2a 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
switches 0:0e018d759a2a 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
switches 0:0e018d759a2a 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
switches 0:0e018d759a2a 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
switches 0:0e018d759a2a 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
switches 0:0e018d759a2a 20 * SOFTWARE.
switches 0:0e018d759a2a 21 */
switches 0:0e018d759a2a 22 #include "rtos/Mutex.h"
switches 0:0e018d759a2a 23
switches 0:0e018d759a2a 24 #include <string.h>
switches 0:0e018d759a2a 25 #include "platform/mbed_error.h"
switches 0:0e018d759a2a 26
switches 0:0e018d759a2a 27 namespace rtos {
switches 0:0e018d759a2a 28
switches 0:0e018d759a2a 29 Mutex::Mutex() {
switches 0:0e018d759a2a 30 #ifdef CMSIS_OS_RTX
switches 0:0e018d759a2a 31 memset(_mutex_data, 0, sizeof(_mutex_data));
switches 0:0e018d759a2a 32 _osMutexDef.mutex = _mutex_data;
switches 0:0e018d759a2a 33 #endif
switches 0:0e018d759a2a 34 _osMutexId = osMutexCreate(&_osMutexDef);
switches 0:0e018d759a2a 35 if (_osMutexId == NULL) {
switches 0:0e018d759a2a 36 error("Error initializing the mutex object\n");
switches 0:0e018d759a2a 37 }
switches 0:0e018d759a2a 38 }
switches 0:0e018d759a2a 39
switches 0:0e018d759a2a 40 osStatus Mutex::lock(uint32_t millisec) {
switches 0:0e018d759a2a 41 return osMutexWait(_osMutexId, millisec);
switches 0:0e018d759a2a 42 }
switches 0:0e018d759a2a 43
switches 0:0e018d759a2a 44 bool Mutex::trylock() {
switches 0:0e018d759a2a 45 return (osMutexWait(_osMutexId, 0) == osOK);
switches 0:0e018d759a2a 46 }
switches 0:0e018d759a2a 47
switches 0:0e018d759a2a 48 osStatus Mutex::unlock() {
switches 0:0e018d759a2a 49 return osMutexRelease(_osMutexId);
switches 0:0e018d759a2a 50 }
switches 0:0e018d759a2a 51
switches 0:0e018d759a2a 52 Mutex::~Mutex() {
switches 0:0e018d759a2a 53 osMutexDelete(_osMutexId);
switches 0:0e018d759a2a 54 }
switches 0:0e018d759a2a 55
switches 0:0e018d759a2a 56 }