fsfw/osal/linux/PeriodicPosixTask.cpp

#include <framework/tasks/ExecutableObjectIF.h>
#include <framework/serviceinterface/ServiceInterfaceStream.h>
#include <framework/osal/linux/PeriodicPosixTask.h>

#include <errno.h>

PeriodicPosixTask::PeriodicPosixTask(const char* name_, int priority_,
		size_t stackSize_, uint32_t period_, void(deadlineMissedFunc_)()):
		PosixThread(name_, priority_, stackSize_), objectList(), started(false),
		periodMs(period_), deadlineMissedFunc(deadlineMissedFunc_) {
}

PeriodicPosixTask::~PeriodicPosixTask() {
	//Not Implemented
}

void* PeriodicPosixTask::taskEntryPoint(void* arg) {
	//The argument is re-interpreted as PollingTask.
	PeriodicPosixTask *originalTask(reinterpret_cast<PeriodicPosixTask*>(arg));
	//The task's functionality is called.
	originalTask->taskFunctionality();
	return NULL;
}

ReturnValue_t PeriodicPosixTask::addComponent(object_id_t object,
		bool setTaskIF) {
	ExecutableObjectIF* newObject = objectManager->get<ExecutableObjectIF>(
			object);
	if (newObject == nullptr) {
	    sif::error << "PeriodicTask::addComponent: Invalid object. Make sure"
	            "it implements ExecutableObjectIF" << std::endl;
		return HasReturnvaluesIF::RETURN_FAILED;
	}
	objectList.push_back(newObject);

	if(setTaskIF) {
	    newObject->setTaskIF(this);
	}

	ReturnValue_t result = newObject->initializeAfterTaskCreation();
	return result;
}

ReturnValue_t PeriodicPosixTask::sleepFor(uint32_t ms) {
	return PosixThread::sleep((uint64_t)ms*1000000);
}


ReturnValue_t PeriodicPosixTask::startTask(void) {
	started = true;
	//sif::info << stackSize << std::endl;
	PosixThread::createTask(&taskEntryPoint,this);
	return HasReturnvaluesIF::RETURN_OK;
}

void PeriodicPosixTask::taskFunctionality(void) {
	if(!started){
		suspend();
	}
	uint64_t lastWakeTime = getCurrentMonotonicTimeMs();
	//The task's "infinite" inner loop is entered.
	while (1) {
		for (ObjectList::iterator it = objectList.begin();
				it != objectList.end(); ++it) {
			(*it)->performOperation();
		}
		if(!PosixThread::delayUntil(&lastWakeTime,periodMs)){
			char name[20] = {0};
			int status = pthread_getname_np(pthread_self(),name,sizeof(name));
			if(status == 0){
				//sif::error << "PeriodicPosixTask " << name << ": Deadline "
				//		"missed." << std::endl;
			}
			else {
				//sif::error << "PeriodicPosixTask X: Deadline missed. " <<
				//		status << std::endl;
			}
			if (this->deadlineMissedFunc != nullptr) {
				this->deadlineMissedFunc();
			}
		}
	}
}

uint32_t PeriodicPosixTask::getPeriodMs() const {
	return periodMs;
}