pyQt5线程池使用
#! /usr/bin/env python
#coding=utf-8
import threading
from PyQt5 import QtCore
from PyQt5.QtWidgets import QApplication, QProgressBar
import sys
import time
class myThread (threading.Thread):
def __init__(self, threadID, name, counter):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
self.counter = counter
def run(self):
print ("开始线程：" + self.name)
tasks = []
for counter in range(1,101):
task=Tasks(counter)
task.start()
tasks.append(task)
for t in tasks:
t.notify()
time.sleep(0.05)
Tasks.wait()
print ("退出线程：" + self.name)
class Thread(QtCore.QRunnable):
def __init__(self,num):
super(Thread,self).__init__()
self.num=num
def run(self):
print("Running Thread #%d" % self.num)
#time.sleep(2)
#some say time.sleep will froze entire main thread(thus not recommended)
QtCore.QThread.msleep(80)
#自定义信号槽如何把持http://www.cnblogs.com/codeio/archive/2011/08/30/2159030.html
class Tasks(QtCore.QObject):
signal=QtCore.pyqtSignal(int)
#signal must be declared outside the constructor but within class.
def __init__(self,num):
super(Tasks,self).__init__()
self.pool=QtCore.QThreadPool.globalInstance()
self.num=num
self.signal.connect(proBar.setValue)
#signal slot connection.watch out for parameter matching(type & count).
def start(self):
threadIns=Thread(self.num)
self.pool.start(threadIns)
def notify(self):
self.signal.emit(self.num)
@staticmethod
def wait():
QtCore.QThreadPool.globalInstance().waitForDone()
if __name__=="__main__":
App=QApplication(sys.argv)
print(QtCore.QThread.currentThreadId())
proBar=QProgressBar()
proBar.setWindowTitle("Nuclear Launch Progression")
proBar.setValue(0)
proBar.setGeometry(200,500,1000,30)
proBar.show()
# 这里在子线程里异步启动QThreadPool，并等待线程池结束，如果不异步启动的话会阻塞ui主线程
th = myThread(1, 'thread-1', 1)
th.start()
sys.exit(App.exec_())