/** ISR for Timer 2
* @pre timer configured with initTimer
* @pre global interrupts enabled with HAL_ENABLE_INTERRUPTS()
*/
void Timer2IntHandler(void)
{
// Clear the timer interrupt
ROM_TimerIntClear(TIMER2_BASE, TIMER_TIMA_TIMEOUT);
// Call the timerIsr function pointer
timerIsr();
}
__interrupt void Timer_A0 (void)
{
timerIsr();
if (wakeupFlags & WAKEUP_AFTER_TIMER)
{
HAL_WAKEUP();
}
}
void cpu() {
genProcesses();
printf("\r\nBegin Simulation:\r\n\r\n");
int simCounter = 0;
while (simCounter <= SIMULATION_END) {
//check for timer interrupt, if so, call timerISR()
if (timerCheck() == 1) {
//printf("Timer interrupt: PID %d was running, ", PCBGetID(currProcess));
// if (PCBGetState(currProcess) != terminated) {
genProcesses();
if (currProcess/*PCBGetState(currProcess) != blocked && PCBGetState(currProcess) != terminated*/) {
printf("Timer interrupt: PID %d was running, ", PCBGetID(currProcess));
} else {
printf("Timer interrupt: no current process is running, ");
}
timerIsr();
}
/****Checking for IO interrupts*****/
//check if there has been an IO interrupt, if so call appropriate ioISR
if (checkIOInterrupt(device1) == 1) {
if (currProcess/*PCBGetState(currProcess) != blocked && PCBGetState(currProcess) != terminated*/) {
printf("I/O 1 Completion interrupt: PID %d is running, ", PCBGetID(currProcess));
} else {
printf("I/O 1 Completion interrupt: no current process is running, ");
}
//call the IO service routine
IO_ISR(1);
}
if (checkIOInterrupt(device2) == 1) {
if (currProcess/*PCBGetState(currProcess) != blocked && PCBGetState(currProcess) != terminated*/) {
printf("I/O 1 Completion interrupt: PID %d is running, ", PCBGetID(currProcess));
} else {
printf("I/O 1 Completion interrupt: no current process is running.");
}
//call the IO service routine
IO_ISR(2);
}
//check the current process's PC, if it is MAX_PC, set to 0 and increment TERM_COUNT
if (currProcess/*PCBGetState(currProcess) != blocked && PCBGetState(currProcess) != terminated*/
&& sysStackPC >= PCBGetMaxPC(currProcess)) {
PCBSetTermCount(currProcess, PCBGetTermCount(currProcess) + 1);
printf("\r\n");
//if TERM_COUNT = TERMINATE, then call terminateISR to put this process in the terminated list
if (PCBGetTermCount(currProcess) == PCBGetTerminate(currProcess)) {
terminateIsr();
continue; //currProcess has been terminated, we don't want to execute the rest of the loop, instead jump to next iteration
}
//PCBSetPC(currProcess, 0);
sysStackPC = 0;
}
sysStackPC++;
/***Checking traps*****/
if (currProcess/*PCBGetState(currProcess) != blocked && PCBGetState(currProcess) != terminated*/
&& checkIORequest(1) != 0) {
printf("I/O trap request: I/O device 1, ");
IOTrapHandler(device1);
}
if (currProcess/*PCBGetState(currProcess) != blocked && PCBGetState(currProcess) != terminated*/
&& checkIORequest(2) != 0) {
printf("I/O trap request: I/O device 2, ");
IOTrapHandler(device2);
}
//at end
simCounter++;
}
}
