void YKScheduler(bool saveContext) {
/* If (current task.priority != highestPriorityReadyTask.priority)
Call Dispatcher to run highest priority ready task. */
if (YKCurTask != YKRdyList) // We don't need to look to the priority because it is a pointer
if (YKRun)
YKDispatcher();
}
//2.5
void YKScheduler(int contextSaved) { /* Determines the highest priority ready task */
TCBptr next;
if(!started)
return;
next = peak(YKRdyList);
if(runningTask != NULL && runningTask->priority != next->priority){
YKEnterMutex();
YKCtxSwCount++;
if(contextSaved == 0) {
YKSaveContext();
}
YKDispatcher(next);
} else if (runningTask == NULL){
YKDispatcher(next);
}
}
void YKScheduler(void) {
if (YKCurrTask != YKRdyList) { // going to change contexts
/*print_ready_list();
printString("DispatchingTask: ");
printInt(YKRdyList);
printNewLine();
printString("CurTask: ");
printInt(YKCurrTask);
printNewLine();
int count;
YKEnterMutex();
printNewLine();
printString("Block List:");
printNewLine();
count = print_delay_list();
printString("Ready List:");
printNewLine();
count += print_ready_list();
if (count != 6)
YKErrorFlag = 1;
YKExitMutex();*/
YKDispatcher();
}
}
void YKScheduler(int saveContext){
YKEnterMutex();
if(YKRdyList != YKCurTask){
YKCtxSwCount++;
YKDispatcher(saveContext);
}
YKExitMutex();
}
//Scheduler & Dispatcher ------------------------------------------------------------------------------
void YKScheduler(int saveContext)
{
//call the dispatcher if the next task isn't already the one running
if(curTask->priority != YKReadyList->priority)
{;
YKDispatcher(saveContext);
}
YKExitMutex();
}
void YKScheduler(void){
//printString("YKScheduler\n");
//Peek the top ready task, if different from current task
//call dispatcher
if(curTCB == null) {
YKCtxSwCount++;
YKDispatcher(1); //first run
}
else if(curTCB != readyHead) {
YKCtxSwCount++;
if(curTCB->runCount == 0) {
curTCB->runCount = curTCB->runCount + 1;
YKDispatcher(2);
} else {
curTCB->runCount = curTCB->runCount + 1;
YKDispatcher(0);
}
}
}
void YKScheduler(void) {
TCB* readyTask;
YKEnterMutex();
if (kernelState == K_BLOCKED) return;
readyTask = peekPriorityQueue(&readyQueue);
if (readyTask == null) exit(READY_QUEUE_EMPTY);
if (readyTask != currentTask) {
currentTask = readyTask;
currentTask->state = T_READY;
YKCtxSwCount++;
readyTask->state = T_RUNNING;
YKDispatcher(readyTask);
YKExitMutex();
return;
}
YKExitMutex();
return;
}
//Scheduler & Dispatcher ---------------------------------------------------------------------
void YKScheduler(int saveContext)
{
// Move any nonzero tasks to the delay que
// Grab highest priority TCB
// Start TCB w/ the Dispatcher
//printString("Scheduler\n\r");
//call the dispatcher;
//printAllLists();
if(curTask->priority != YKReadyList->priority)
{
//printString("CALLING DISPATCHER\n\r");
//curTask = YKReadyList;
//YKExitMutex();
YKDispatcher(saveContext);
}
YKExitMutex();
//printString("EXIT SCHEDULER\n\r");
}
