fsfw/osal/FreeRTOS/Mutex.cpp

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#include "Mutex.h"
#include <framework/serviceinterface/ServiceInterfaceStream.h>
const uint32_t MutexIF::NO_TIMEOUT = 0;
Mutex::Mutex() {
handle = xSemaphoreCreateMutex();
if(handle == NULL) {
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sif::error << "Mutex creation failure" << std::endl;
}
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}
Mutex::~Mutex() {
if (handle != 0) {
vSemaphoreDelete(handle);
}
}
ReturnValue_t Mutex::lockMutex(uint32_t timeoutMs) {
if (handle == 0) {
return MutexIF::MUTEX_NOT_FOUND;
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}
TickType_t timeout = portMAX_DELAY;
if (timeoutMs != NO_TIMEOUT) {
timeout = pdMS_TO_TICKS(timeoutMs);
}
BaseType_t returncode = xSemaphoreTake(handle, timeout);
if (returncode == pdPASS) {
return HasReturnvaluesIF::RETURN_OK;
} else {
return MutexIF::MUTEX_TIMEOUT;
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}
}
ReturnValue_t Mutex::unlockMutex() {
if (handle == 0) {
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return MutexIF::MUTEX_NOT_FOUND;
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}
BaseType_t returncode = xSemaphoreGive(handle);
if (returncode == pdPASS) {
return HasReturnvaluesIF::RETURN_OK;
} else {
return MutexIF::CURR_THREAD_DOES_NOT_OWN_MUTEX;
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}
}