Question

TL; DR： 当从main（从python包导入：多处理）创建进程时，可以终止它并具有正常退出，即允许机器人脚本进行拆解。但是，在QThread中创建进程时，Robot脚本将立即停止而不允许拆解。

长篇故事： 我正在尝试修复硬件测试程序，测试人员使用Python3和QT进行GUI并运行RobotFramework测试脚本。为了运行机器人测试，创建QThread以防止GUI冻结，在QThread内部启动运行Robot Framework测试的进程。在测试有效的设备时，即没有失败的测试，Robot脚本正确运行。但是，当我尝试中止测试时，不允许优雅地关闭它，因为它似乎直接被杀死。清除：机器人测试退出但不运行拆解。如果我改为直接在“main”中创建运行Robot测试的进程，程序将在终止时正常退出。

我的问题是如何让QThread内的进程表现得一样？

我创建了一个最小的示例代码来显示正在发生的事情。有两个文件robotrunner.py和robottemplate.robot。如果我们将测试变量设置为1，我们将直接在main中创建进程，程序将在2秒后正常退出。如果我们将测试变量设置为2，则将在QThread内创建进程，同时终止测试将立即终止（不需要）。

Running the test cases, nr1 is desired and nr2 is undesired behaviour

robotrunner.py：

    import robot
import time
import time
import datetime
from multiprocessing import Process
from PyQt5.QtCore import QThread, pyqtSignal

class RobotExec(QThread):
    def __init__(self):
        QThread.__init__(self)
        self.p = None

    #Run QThread
    def run(self):
        self.p = Process(target=startRobot)
        print("p.start()")
        self.p.start()

    def stop(self):
        print("p.terminate")
        self.p.terminate()
        print("Waiting to join")
        self.p.join()
        print("joined")

def startRobot():
    print("Robot run")
    robot.run('robottemplate.robot', loglevel='INFO')

if __name__ == '__main__':
    test=2  #Choose between 1 and 2
    print(test)

    #nr1
    if test==1:
        p = Process(target=startRobot)
        print("p.start()")
        p.start()
        time.sleep(2)
        print("p.terminate")
        p.terminate()
        print("Waiting to join")
        p.join()
        print("joined")

    #nr2
    if test==2:
        robotExecutionThread = RobotExec()
        robotExecutionThread.start()
        time.sleep(1)
        robotExecutionThread.stop()
        time.sleep(6)

robottemplate.robot：

*** Settings ***
Suite Setup  Setup Sute
Suite Teardown  Teardown Suite

*** Variables ***

*** Keywords ***

wait for server
    [arguments]  ${host}  ${port}  ${timeout}=30
    wait until keyword succeeds  ${timeout} seconds  1 second  TCP server is alive  host=${host}  port=${port}

Setup Sute
    Log To Console    Setup Sute

Teardown Suite
    Log To Console    Teardown Suite
    Sleep    1s
    Log To Console    Tore down the suit

*** Test Cases ***
Test PC
    [Tags]    RevPC
    Log To Console    RevPC
    Sleep    1s

Test PC and PD
    [Tags]    RevPC    RevPD
    Log To Console    PC and PD
    Sleep    1s

Test PD
    [Tags]    RevPD
    Log To Console    RevPD
    Sleep    1s

Test PD and PE
    [Tags]    RevPD    RevPE
    Log To Console    PD and PE
    Sleep    1s

Test PE
    [Tags]    RevPE
    Log To Console    RevPE
    Sleep    1s

Test that should always run
    [Tags]    All
    Log To Console    This test should always run

优雅地终止QThread内部的进程

0 个答案: