createtask.cpp

一个很棒的网络控制系统仿真软件

#ifndef CREATE_TASK
#define CREATE_TASK

bool ttCreateTask(char *name, double deadline, double priority, double (*codeFcn)(int, void*)) {

  TaskNode *tn;
  Task* task;

  if (strcmp(name,"") == 0) {
    MEX_ERROR("ttCreate(Periodic)Task: Name should be a non-empty string!");
    return false;
  }
  if (rtsys->prioFcn == NULL) {
    MEX_ERROR("ttCreate(Periodic)Task: Kernel must be initialized before creation of tasks!");
    return false;
  }

  tn = (TaskNode*) rtsys->taskList->getFirst();
  while (tn!=NULL) {
    task = tn->getTask();
    if (task->name != NULL) {
      if (strcmp(task->name, name) == 0)
	break;
    }
    tn = (TaskNode*) tn->getNext();
  }
  if (tn!=NULL) { 
    MEX_ERROR("ttCreate(Periodic)Task: Name of task not unique! Task not created!");
    return false;
  }
  if (priority < EPS) {
    MEX_ERROR("ttCreate(Periodic)Task: Priorities are supposed to be positive real numbers!");
    return false;
  }

  task = new Task;
  task->name = new char[strlen(name)+1];
  strcpy(task->name, name);
  task->taskID = rtsys->nbrOfTasks+1;
  
  task->wcExecTime = deadline;
  task->deadline = deadline;
  task->assignedPriority = priority;
  task->priority = priority;
  
  task->isPreemptable = true;
  task->display = true;
  rtsys->nbrOfSchedTasks++;
  
  task->deadlineORhandler = NULL;
  task->exectimeORhandler = NULL;
      
  task->jobQ = new List("JobQ", rtsys->jobQCmpFcn);
  task->blockList = new List("BlockList", NULL);
  task->currentJob = NULL;
  task->perTimer = NULL;
  task->data = NULL;
  task->dataMATLAB = NULL;
  task->codeFcn = codeFcn;
  task->codeFcnMATLAB = NULL;
  
  task->released_hook   = rtsys->default_release;
  task->started_hook    = rtsys->default_start;
  task->suspended_hook  = rtsys->default_suspend;
  task->resumed_hook    = rtsys->default_resume;
  task->finished_hook   = rtsys->default_finish;
      
  rtsys->taskList->appendNode(new TaskNode(task));
      
  rtsys->nbrOfTasks++;

  return true;
}

bool ttCreateTask(char *name, double deadline, double priority, double (*codeFcn)(int, void*), void* data) {

  TaskNode *n;

  if (ttCreateTask(name, deadline, priority, codeFcn)) {

    n = (TaskNode*) rtsys->taskList->getLast();
    n->getTask()->data = data;
    return true;
  } else {
    return false;
  }
}

#endif