notifyall.cpp

来自「一个很棒的网络控制系统仿真软件」· C++ 代码 · 共 52 行

#ifndef NOTIFY_ALL
#define NOTIFY_ALL

#include "moveready.cpp"

void ttNotifyAll(char *nameOfEvent) {
  
  EventNode* en;
  Event* ev;
  TaskNode *tn, *tmp;

  en = (EventNode*) rtsys->eventList->getFirst();
  while (en != NULL) {
    if (en->getEvent()->name != NULL) {
      if (strcmp(en->getEvent()->name, nameOfEvent) == 0)
	break;
    }
    en = (EventNode*) en->getNext();
  }
  
  if (en == NULL) {
    char buf[200];
    sprintf(buf, "ttNotifyAll: Non-existent event '%s'!", nameOfEvent);
    MEX_ERROR(buf);
    return;
  }

  // Event exists 
  ev = en->getEvent();
  if (ev->isFree) {
    // Free event, move all waiting tasks to readyQ 
    tn = (TaskNode*) ev->waitingQ->getFirst();
    while (tn != NULL) {
      moveToReadyQ(tn->getTask());
      tmp = tn;
      tn = (TaskNode*) tn->getNext();
      ev->waitingQ->deleteNode(tmp);
    }
  } else {
    // Event associated with a monitor, move all waiting tasks to waitingQ of monitor
    tn = (TaskNode*) ev->waitingQ->getFirst();
    while (tn != NULL) {
      tmp = tn;
      tn = (TaskNode*) tn->getNext();
      ev->waitingQ->removeNode(tmp);
      ev->mon->waitingQ->appendNode(tmp);
    }
  }
} 

#endif