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/Mutex.cpp@6:350b53afb889, 2012-11-23 (annotated)

Committer:
emilmont
Date:
Fri Nov 23 09:57:31 2012 +0000
Revision:
6:350b53afb889
Child:
8:88a1a9c26ae3
Merge RTOS C++ API and RTX under the same library; Update RTX to version 4.60; Add proper Thread destructor;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 6:350b53afb889 1 #include "Mutex.h"
emilmont 6:350b53afb889 2
emilmont 6:350b53afb889 3 #include <string.h>
emilmont 6:350b53afb889 4 #include "error.h"
emilmont 6:350b53afb889 5
emilmont 6:350b53afb889 6 namespace rtos {
emilmont 6:350b53afb889 7
emilmont 6:350b53afb889 8 Mutex::Mutex() {
emilmont 6:350b53afb889 9 #ifdef CMSIS_OS_RTX
emilmont 6:350b53afb889 10 memset(_mutex_data, 0, sizeof(_mutex_data));
emilmont 6:350b53afb889 11 _osMutexDef.mutex = _mutex_data;
emilmont 6:350b53afb889 12 #endif
emilmont 6:350b53afb889 13 _osMutexId = osMutexCreate(&_osMutexDef);
emilmont 6:350b53afb889 14 if (_osMutexId == NULL) {
emilmont 6:350b53afb889 15 error("Error initializing the mutex object\n");
emilmont 6:350b53afb889 16 }
emilmont 6:350b53afb889 17 }
emilmont 6:350b53afb889 18
emilmont 6:350b53afb889 19 osStatus Mutex::lock(uint32_t millisec) {
emilmont 6:350b53afb889 20 return osMutexWait(_osMutexId, millisec);
emilmont 6:350b53afb889 21 }
emilmont 6:350b53afb889 22
emilmont 6:350b53afb889 23 bool Mutex::trylock() {
emilmont 6:350b53afb889 24 return (osMutexWait(_osMutexId, 0) == osOK);
emilmont 6:350b53afb889 25 }
emilmont 6:350b53afb889 26
emilmont 6:350b53afb889 27 osStatus Mutex::unlock() {
emilmont 6:350b53afb889 28 return osMutexRelease(_osMutexId);
emilmont 6:350b53afb889 29 }
emilmont 6:350b53afb889 30
emilmont 6:350b53afb889 31 Mutex::~Mutex() {
emilmont 6:350b53afb889 32 osMutexDelete(_osMutexId);
emilmont 6:350b53afb889 33 }
emilmont 6:350b53afb889 34
emilmont 6:350b53afb889 35 }