Question

我的代码是：

class Client（DirectObject，object）：

'''
Clientclass. This class processes the keys which the user presses to the host and gets the data
from the host, which are to be set in a dummy version of the model
'''

seed= ""
id = None

def __init__(self, ip):
    '''
    This is the  constructor. It creates the ShowBase an starts both the process which processes the keys and the process 
    which takes in data from the host
    param: ip ip is a float which contains the ip adress of the host

    '''
    logging.getLogger(__name__).info("Clientobjekt erstellt")
    self.makw = mouseAndKeyWrapper.MouseAndKeyWrapper()
    time.sleep(5)      
    from modules.logic import game
    self.cprocess = threading.Thread(target = Client.workAsClient, args = (ip,self.makw))
    self.cprocess.start()
    time.sleep(5)
    while True:
        if Client.seed != "":
            break               
    game.seed = Client.seed
    game.initGame()
    game.initGameInstance()    
    game.start()    

    self.workShowBase()  
    game.myShowBase.run()



def workShowBase(self):

    '''
    workShowBase defines how to change values in keydict when keys are pressed and
    starts ShowBase process
    '''
    from modules.logic import game
    logging.getLogger(__name__).info("Showbase is working")
    game.myShowBase.accept("w", self.makw.setKeys, ["w",1])
    game.myShowBase.accept("a", self.makw.setKeys, ["a",1])
    game.myShowBase.accept("s", self.makw.setKeys, ["s",1])
    game.myShowBase.accept("d", self.makw.setKeys, ["d",1])
    game.myShowBase.accept("space", self.makw.setKeys, ["space",1])
    game.myShowBase.accept("w-up", self.makw.setKeys, ["w",0])
    game.myShowBase.accept("a-up", self.makw.setKeys, ["a",0])
    game.myShowBase.accept("s-up", self.makw.setKeys, ["s",0])
    game.myShowBase.accept("d-up", self.makw.setKeys, ["d",0])
    game.myShowBase.accept("space-up", self.makw.setKeys, ["space",0])
    #game.myShowBase.accept("mouse1",self.makw.setKeys,["mouse",1])
    #game.myShowBase.accept("mouse1-up",self.makw.setKeys,["mouse",0])





@staticmethod  
def workAsClient(ip, makw):
    '''
    This method contains the client thread, that is, the thread which sends data to the host and
    receives data from it - for this reason it has to be static
    param: ip ip is a float which contains the ip adress of the host
    '''
    logging.getLogger(__name__).info("Clientendlosschleife gestartet")
    from modules.logic import game
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
    s.connect((ip, 50001)) 
    seedSend = s.recv(4096)
    Client.seed =loads(seedSend)
    ID = s.recv(4096)
    Client.id = loads(ID)      
    makw.id = id
    keyThread = threading.Thread(target =Client.sendData, args = (makw,s))
    print("threadmade")
    keyThread.start()
    print("started")

@staticmethod    
def sendData(makw, sock):
    print("method")     
    while True:
        print("loop")
        dictToSend = dumps(makw,2)
        print("dumped")
        sock.sendall(dictToSend)
        print("sent")

这确实很好。

但是，如果我在构造函数中省略“time.sleep（5）”，永远不会发出调用sendData的线程，更不用说启动了。怎么可能？ Showbase技术上不应该干涉，在另一个过程中！我能解决这个问题吗？

Answer 1

您应该避免使用可能消耗所有资源的完全活动等待，而其他线程无法工作。

所以你最好试试：

while True:
        if Client.seed != "":
            break
        time.sleep(10)

确实你的辅助线程被启动但是如果主线程在其无限循环中消耗了所有处理它将永远不会有机会工作，那么永远不会提供主线程正在等待的种子=＆gt;的死锁

当你使用sleep（5）时，你有机会安排辅助线程并产生种子;然后当后一个主线程被重新安排时，它会找到种子，继续工作，一切都按预期进行。

但是你的解决方法非常脆弱，因为你不能保证在主线程的睡眠期间会安排另一个。

它现在可以在您的开发环境中运行，但在其他环境中可能会在生产中中断。

线程工作显然没有任何参考代码

1 个答案: