[英]Killing child process when parent crashes in python
我正在尝试编写一个python程序来测试用C编写的服务器.python程序使用subprocess
模块启动已编译的服务器:
pid = subprocess.Popen(args.server_file_path).pid
这工作正常,但是如果python程序由于错误而意外终止,则生成的进程将保持运行状态。 我需要一种方法来确保如果python程序意外退出,服务器进程也会被终止。
更多细节:
我会atexit.register
一个函数来终止进程:
import atexit
process = subprocess.Popen(args.server_file_path)
atexit.register(process.terminate)
pid = process.pid
或者可能:
import atexit
process = subprocess.Popen(args.server_file_path)
@atexit.register
def kill_process():
try:
process.terminate()
except OSError:
pass #ignore the error. The OSError doesn't seem to be documented(?)
#as such, it *might* be better to process.poll() and check for
#`None` (meaning the process is still running), but that
#introduces a race condition. I'm not sure which is better,
#hopefully someone that knows more about this than I do can
#comment.
pid = process.pid
请注意,如果您做了一些令人讨厌的事情导致python以不正常的方式死亡(例如通过os._exit
或者如果导致SegmentationFault
或BusError
),这对您没有帮助
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.