一. current_thread的用法 import threading import time from threading import Thread, current_thread def func(n): time.sleep(1) print('子线程名称', current_thread().getName()) # Thread-1 print(f'{n}号线程任务') if __name__ == '__main__': t = Thread(target=func, args=(1,)) ...
signal.signal(signal.SIGUSR1, signal_handler) def wait_for_signal(): print 'Waiting for signal in', threading.currentThread().name signal.pause() print 'Done waiting' # Start a thread that will not receive the signal receiver = threading.Thread(target=wait_for_signal, name='receiver...
frame):print"received signal%s%s"%(num,threading.currentThread())signal.signal(signal.SIGUSR1,usr1_handler)defthread_get_signal():#如果在子线程中设置signal的handler 会报错#ValueError: signal only works in main thread#signal.signal(signal.SIGUSR2, usr1_handler)print"waiting...
import signal from time import sleep signal.alarm(5) # 采用默认的方法处理SIGALRM信号 # signal.signal(signal.SIGALRM, signal.SIG_DFL) # 采用忽略信号方法 signal.signal(signal.SIGALRM, signal.SIG_IGN) signal.signal(signal.SIGINT, signal.SIG_IGN) while True: sleep(2) print('等待时钟……') 1....
父进程中可以使用 signal(SIGCHLD,SIG_IGN) 将子进程的退出交给系统处理 程序的异步和同步执行: (单进程的同步异步) 同步: 程序按照步骤一步步执行,呈现一个先后性的顺序 异步: 信号是唯一一个内部通信方式 程序在执行中利用内核功能帮助完成必要的辅助操作 ...
event=threading.Event()# 线程函数1defwait_event():print("waiting for event...")event.wait()print("event has been set.")# 线程函数2defset_event():print("setting event...")event.set()# 创建线程 t1=threading.Thread(target=wait_event)t2=threading.Thread(target=set_event)# 启动线程 ...
类似os.wait(),等待销毁指定pid的进程 signal.signal(signal.SIGCHLD, handle_func) 监听每个子进程退出时的触发信号,通过handle_func回调处理。 通常在handle_func中执行上述三个方法之一。 signal.signal(signal.SIGCHLD, signal.SIG_IGN) 此处的SIG_IGN并非默认的忽略,通过此方法子进程会在结束时直接被回收,不再...
thread_names = ['Mike','George','Wanda','Dingbat','Nina'] foriinrange(5): my_thread = threading.Thread( target=doubler, name=thread_names[i], args=(i,logger)) my_thread.start() 代码中最大的改变就是加入了get_logger函数。这段代码将创建一个被设置为调试级别的日志记录器。它将日志保存...
=0,timeout):#timed out. Break the barrierself._break()raiseBrokenBarrierErrorifself._state<0:raiseBrokenBarrierErrorassertself._state==1# If we are the last thread to exit the barrier, signal any threads# waiting for the barrier to drain.def_exit(self):ifself._count==0:ifself._state...
There are a few forms of exceptions that allow for catching multiple exception types and so on, but the core form is the same. As with C#/CLR exceptions, if the exception passes outside of the top-level function in the currently executing program, the thread will terminate and p...