Rahul Dahiya / Mbed OS STM32F7 Ethernet

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

mbed-os/rtos/Mutex.cpp@0:fb8047b156bb, 2020-01-15 (annotated)

Committer:
rahul_dahiya
Date:
Wed Jan 15 15:57:15 2020 +0530
Revision:
0:fb8047b156bb
STM32F7 LWIP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rahul_dahiya 0:fb8047b156bb 1 /* mbed Microcontroller Library
rahul_dahiya 0:fb8047b156bb 2 * Copyright (c) 2006-2012 ARM Limited
rahul_dahiya 0:fb8047b156bb 3 *
rahul_dahiya 0:fb8047b156bb 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
rahul_dahiya 0:fb8047b156bb 5 * of this software and associated documentation files (the "Software"), to deal
rahul_dahiya 0:fb8047b156bb 6 * in the Software without restriction, including without limitation the rights
rahul_dahiya 0:fb8047b156bb 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
rahul_dahiya 0:fb8047b156bb 8 * copies of the Software, and to permit persons to whom the Software is
rahul_dahiya 0:fb8047b156bb 9 * furnished to do so, subject to the following conditions:
rahul_dahiya 0:fb8047b156bb 10 *
rahul_dahiya 0:fb8047b156bb 11 * The above copyright notice and this permission notice shall be included in
rahul_dahiya 0:fb8047b156bb 12 * all copies or substantial portions of the Software.
rahul_dahiya 0:fb8047b156bb 13 *
rahul_dahiya 0:fb8047b156bb 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
rahul_dahiya 0:fb8047b156bb 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
rahul_dahiya 0:fb8047b156bb 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
rahul_dahiya 0:fb8047b156bb 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
rahul_dahiya 0:fb8047b156bb 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
rahul_dahiya 0:fb8047b156bb 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
rahul_dahiya 0:fb8047b156bb 20 * SOFTWARE.
rahul_dahiya 0:fb8047b156bb 21 */
rahul_dahiya 0:fb8047b156bb 22 #include "rtos/Mutex.h"
rahul_dahiya 0:fb8047b156bb 23
rahul_dahiya 0:fb8047b156bb 24 #include <string.h>
rahul_dahiya 0:fb8047b156bb 25 #include "mbed_error.h"
rahul_dahiya 0:fb8047b156bb 26 #include "mbed_assert.h"
rahul_dahiya 0:fb8047b156bb 27
rahul_dahiya 0:fb8047b156bb 28 namespace rtos {
rahul_dahiya 0:fb8047b156bb 29
rahul_dahiya 0:fb8047b156bb 30 Mutex::Mutex(): _count(0)
rahul_dahiya 0:fb8047b156bb 31 {
rahul_dahiya 0:fb8047b156bb 32 constructor();
rahul_dahiya 0:fb8047b156bb 33 }
rahul_dahiya 0:fb8047b156bb 34
rahul_dahiya 0:fb8047b156bb 35 Mutex::Mutex(const char *name)
rahul_dahiya 0:fb8047b156bb 36 {
rahul_dahiya 0:fb8047b156bb 37 constructor(name);
rahul_dahiya 0:fb8047b156bb 38 }
rahul_dahiya 0:fb8047b156bb 39
rahul_dahiya 0:fb8047b156bb 40 void Mutex::constructor(const char *name)
rahul_dahiya 0:fb8047b156bb 41 {
rahul_dahiya 0:fb8047b156bb 42 memset(&_obj_mem, 0, sizeof(_obj_mem));
rahul_dahiya 0:fb8047b156bb 43 osMutexAttr_t attr = { 0 };
rahul_dahiya 0:fb8047b156bb 44 attr.name = name ? name : "aplication_unnamed_mutex";
rahul_dahiya 0:fb8047b156bb 45 attr.cb_mem = &_obj_mem;
rahul_dahiya 0:fb8047b156bb 46 attr.cb_size = sizeof(_obj_mem);
rahul_dahiya 0:fb8047b156bb 47 attr.attr_bits = osMutexRecursive | osMutexPrioInherit | osMutexRobust;
rahul_dahiya 0:fb8047b156bb 48 _id = osMutexNew(&attr);
rahul_dahiya 0:fb8047b156bb 49 MBED_ASSERT(_id);
rahul_dahiya 0:fb8047b156bb 50 }
rahul_dahiya 0:fb8047b156bb 51
rahul_dahiya 0:fb8047b156bb 52 osStatus Mutex::lock(uint32_t millisec) {
rahul_dahiya 0:fb8047b156bb 53 osStatus status = osMutexAcquire(_id, millisec);
rahul_dahiya 0:fb8047b156bb 54 if (osOK == status) {
rahul_dahiya 0:fb8047b156bb 55 _count++;
rahul_dahiya 0:fb8047b156bb 56 }
rahul_dahiya 0:fb8047b156bb 57 return status;
rahul_dahiya 0:fb8047b156bb 58 }
rahul_dahiya 0:fb8047b156bb 59
rahul_dahiya 0:fb8047b156bb 60 bool Mutex::trylock() {
rahul_dahiya 0:fb8047b156bb 61 if (osMutexAcquire(_id, 0) == osOK) {
rahul_dahiya 0:fb8047b156bb 62 _count++;
rahul_dahiya 0:fb8047b156bb 63 return true;
rahul_dahiya 0:fb8047b156bb 64 } else {
rahul_dahiya 0:fb8047b156bb 65 return false;
rahul_dahiya 0:fb8047b156bb 66 }
rahul_dahiya 0:fb8047b156bb 67 }
rahul_dahiya 0:fb8047b156bb 68
rahul_dahiya 0:fb8047b156bb 69 osStatus Mutex::unlock() {
rahul_dahiya 0:fb8047b156bb 70 _count--;
rahul_dahiya 0:fb8047b156bb 71 return osMutexRelease(_id);
rahul_dahiya 0:fb8047b156bb 72 }
rahul_dahiya 0:fb8047b156bb 73
rahul_dahiya 0:fb8047b156bb 74 osThreadId Mutex::get_owner() {
rahul_dahiya 0:fb8047b156bb 75 return osMutexGetOwner(_id);
rahul_dahiya 0:fb8047b156bb 76 }
rahul_dahiya 0:fb8047b156bb 77
rahul_dahiya 0:fb8047b156bb 78 Mutex::~Mutex() {
rahul_dahiya 0:fb8047b156bb 79 osMutexDelete(_id);
rahul_dahiya 0:fb8047b156bb 80 }
rahul_dahiya 0:fb8047b156bb 81
rahul_dahiya 0:fb8047b156bb 82 }