/**
* Default constructor for the task that stores its unique ID and
* compute/period time pair. All time values are assumed to be milliseconds.
*
* @param id - the task's unique ID
* @param computeTime - the tasks's compute time
* @param periodTime - the tasks's period time
*/
Task::Task(int id, int computeTime, int periodTime)
{
int result;
// Attempt to initialize the execution semaphore.
result = sem_init(&sem, 0, SEM_COUNT);
if (result != 0)
{
cerr << "Error initializing execution semaphore for task " <<
id << endl;
uid = -1;
}
else
{
// Initialize the rest of the task's variables.
this->uid = id;
this->computeTime = computeTime;
this->currentComputeTime = 0;
this->periodTime = periodTime;
this->deadline = periodTime;
this->deadlinesMissed = 0;
this->deadlineEvents = 0;
this->totalComputationTimeMissed = 0;
this->totalComputationTime = 0;
this->totalComputationCycles = 0;
this->averageTaskPeriod = 0;
this->realComputeTime = 0;
this->computeTransitionTime = 0;
// Initialize the burn time quantum.
this->burnTime.tv_nsec = REAL_TIME_QUANTUM;
// Configure the period timer.
configureTimer();
}
}
void RFduino_Timer2::start(void)
{
configureTimer();
NRF_TIMER2->TASKS_START = 1;
}
