def mixed_task_set(tasks, factor, rate):
allTasks = []
for task in tasks:
task['abnormal_exe'] = task['execution'] * factor
task['prob'] = rate
allTasks.append(task)
return sort_task_set.sort(allTasks, 'period')
def pdfForm(tasks):
allTasks = []
for task in tasks:
task['pdf'] = [(task['execution'], 1 - task['prob']),
(task['abnormal_exe'], task['prob'])]
allTasks.append(task)
return sort_task_set.sort(allTasks, 'period')
def mixed_task_set(tasks, factor):
allTasks=[]
for task in tasks:
task.abnormal_exe = task.execution * factor
allTasks.append(task)
return sort_task_set.sort(allTasks, 'period')
def hardtaskWCET(tasks, hardTaskWCETFactor, rate):
allTasks = []
for i in range(len(tasks)):
pos = random.randint(0, len(tasks) - 1)
task = tasks[pos]
task['abnormal_exe'] = task['execution'] * hardTaskWCETFactor
task['type'] = 'hard'
task['prob'] = rate
allTasks.append(task)
del tasks[pos]
return sort_task_set.sort(allTasks, 'period')
def addPrioritiesToTasks(tasks):
#print(tasks)
taskPriorities = [x for x in range(len(tasks))]
#print(taskPriorities)
allTasks = []
for task in tasks:
#adds a random priority to a task
randomPrioIndex = random.random() * len(taskPriorities)
task.setPriority(taskPriorities.pop(int(randomPrioIndex)) + 1)
allTasks.append(task)
return sort_task_set.sort(allTasks, 'priority')
def taskGeneration(tasks, hardTasks, softTasks, hardTaskPercentage,
hardTaskWCETFactor, softTaskWCETFactor):
#print len(tasks)
numberOfHardTasks = (hardTaskPercentage / 100 * len(tasks))
#print numberOfHardTasks
allTasks = []
for i in range(int(numberOfHardTasks)):
pos = random.randint(0, len(tasks) - 1)
task = tasks[pos]
task['abnormal_exe'] = task['execution'] * hardTaskWCETFactor
task['type'] = 'hard'
hardTasks.append(task)
allTasks.append(task)
del tasks[pos]
for task in tasks:
task['abnormal_exe'] = task['execution'] * softTaskWCETFactor
task['type'] = 'soft'
softTasks.append(task)
allTasks.append(task)
allTasks = hardTasks + softTasks
hardTasks = sort_task_set.sort(hardTasks, 'period')
softTasks = sort_task_set.sort(softTasks, 'period')
return sort_task_set.sort(allTasks, 'period')
def add_processor_to_task( tasks, processorsNum ):
processors = [0 for x in range(processorsNum)]
for task in tasks:
task.uti = task["execution"]/task["period"]
tasks = sort_task_set.sort(tasks, "uti")
tasks.reverse()
for task in tasks:
processor = lowestUtilizationProcessor(processors)
uti = task.execution/task.period
processors[processor] += uti
task.processor = processor