Thread(target=thread_get_signal, name="receiver") receiver.start() # 为了保证线程开启顺利,加0.1s延迟 time.sleep(0.1) pid = os.getpid() print('pid', pid) def send_signal(): print("sending signal", threading.currentThread()) os.kill(pid, signal.SIGUSR1) sender = threading.Thread(...
signal.pause() 获取信号处理程序 signal.getsignal(signalnum) 根据signalnum 返回信号对应的 handler,可能是一个可以调用的 Python 对象,或者是 signal.SIG_IGN(表示被忽略), signal.SIG_DFL(默认行为)或 None(Python 的 handler 还没被定义)。 # -*- coding: utf-8 - import signal signals_to_names =...
signal_getsignal.py import signal defalarm_received(n,stack):returnsignal.signal(signal.SIGALRM,alarm_received)signals_to_names={getattr(signal,n):nforn indir(signal)ifn.startswith('SIG')and'_'not in n}fors,name insorted(signals_to_names.items()):handler=signal.getsignal(s)ifhandler is si...
defwait_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') receiver.start() time.sleep(0.1) defsend_signal(): ...
python Signal QThread time sleep 阻塞 重点回顾: (重点)粘包 : 就是因为接收端不知道如何接收数据,造成接收数据的混乱的问题 只发生在tcp协议上. 因为tcp协议的特点是面向数据流形式的传输 粘包的发生主要是因为tcp协议有两个机制: 合包机制(nagle算法),拆包机制...
import signal def sendusr1(): print '发送信号' #这里的进程id需要写前一个程序实际运行的pid os.kill(17788, signal.SIGUSR1) WORKER = [] #开启6个线程 for i in range(1, 7): threadinstance = threading.Thread(target = sendusr1) WORKER.append(threadinstance) for i in WORKER...
concurrent.futures.ThreadPoolExecutor(max_workers) concurrent.futures.ProcessPoolExecutor(max_workers) max_workers参数标识着异步执行调用的最大工作线程数。 如何做... 这是线程和进程池使用的一个例子,我们将比较执行时间与顺序执行所需的时间。 要执行的任务如下:我们有一个包含 10 个元素的列表。列表的每个元...
# try to kill the daemon process try: i = 0 while 1: os.kill(pid, signal.SIGTERM) time.sleep(0.1) i = i + 1 if i % 10 == 0: os.kill(pid, signal.SIGHUP) except OSError, err: err = str(err) if err.find('No such process') > 0: ...
core, pandas, packaging, onnx, omegaconf, numba, nltk, matplotlib-inline, jupyter-core, Jinja2, jedi, importlib-resources, importlib-metadata, google-auth, gitdb, fasttext, botocore, black, beautifulsoup4, argon2-cffi-bindings, aiosignal, torchmetrics, sphinx, s3transfer, resampy, pytest, ...
os.kill(int(cmd[1]), signal.SIGTERM) client_socket.send('killed!'.encode()) except: client_socket.send('cannot kill!'.encode()) continue [shutdown][reboot]关机重启命令 elif cmd[0] == 'shutdown': # 关机 client_socket.send('需要关机吗?'.encode()) ...