semaphore : Semaphore Semaphore 信号量或 BoundedSemaphore 信号量 """ semaphore.release() # 误写多出了这一行 semaphore.acquire() print(f"[{time.time()}] thread: {idx} acquire semaphore\n", end='') time.sleep(1 + 0.1 * idx) semaphore.release() print(f"[{time.time()}] thread: {id...
semaphore.acquire() time.sleep(1)print("run the thread: %s"%n) semaphore.release()#如果再次释放信号量,信号量加一,这是超过限定的信号量数目,这时会报错ValueError: Semaphore released too many times#semaphore.release()if__name__=='__main__': num=0 semaphore= threading.BoundedSemaphore(2)#最多...
defrun(self)->None:logging.info('%r start running'%self)try:whileself.semaphore.acquire():logging.info('%r hold the semaphore'%self)finally:self.semaphore.release()def__repr__(self):return'SemaphoreTestThread(%s)'%self.idif__name__=='__main__':logging.basicConfig(level=logging.INFO,form...
semaphore.acquire() time.sleep(1) print("run the thread: %s" % n) semaphore.release() # 如果再次释放信号量,信号量加一,这是超过限定的信号量数目,这时会报错ValueError: Semaphore released too many times #semaphore.release() if __name__ == '__main__': num = 0 semaphore = threading.Bound...
classBoundedSemaphore(Semaphore):def__init(self,value=1):Semaphore.__init(self,value)self._initial_value=valuedefrelease(self):withself._cond:ifself._value>=self._initial_value:raiseValueError(“Semaphorereleasedtoomanytimes”)self._value+=1self._cond.notify() ...
raise ValueError("Semaphore released too many times") ValueError: Semaphore released too many times 1. 2. 3. Event 实现事件对象的类。事件管理一个内部标志flag,可以使用 set() 方法设置标志flag为true并使用 clear() 方法重置为false的标志。 wait() 方法阻塞,直到标志为真。该标志最初为假。一个线程发...
(ii,'号停车位释放') #***此处高能***semaphore.release()# 释放信号量:信号量加一 # 再次释放信号量:信号量加一,这时超过限定的信号量数目会报错ValueError: Semaphore released too many times semaphore.release() #***高能结束***for i in range(5):#创建5个线程 t=threading.Thread(target=run,args=...
raise ValueError, "Semaphore released too many times" return _Semaphore.release(self) 你同样可以通过with语句来管理信号量对象. semaphore = threading.Semaphore() with semaphore: # work on a shared resource ... Event 这是一个相对于前面几种方法是一个比较简单的机制。一个线程发出一个event的信号并且...
raise ValueError, "Semaphore released too many times" return _Semaphore.release(self) 你同样可以通过with语句来管理信号量对象. semaphore = threading.Semaphore() with semaphore: # work on a shared resource ... Event 这是一个相对于前面几种方法是一个比较简单的机制。一个线程发出一个event的信号并且...
randint(0,10)*1) print(ii,'号停车位释放') #***此处高能*** semaphore.release()# 释放信号量:信号量加一 # 再次释放信号量:信号量加一,这时超过限定的信号量数目会报错ValueError: Semaphore released too many times semaphore.release() #***高能结束*** for i in range(5):#创建5个线程 t=thread...