什么等于在Windows中使用python的sigusr1-2信号? [英] what is equivalent to sigusr1-2 signals in windows using python?
问题描述
请我需要一些帮助.我正在努力在Windows中的两个python进程之间发送通知.
Please I need some help. I am struggling with sending a notifications between two python processes in windows.
我已经看过信号模块，但是不幸的是，Windows不支持用户定义的信号.
I have looked in signals module but unfortunately user defined signals are not supported in windows.
Windows使用其他称为消息的东西，但是我不知道它是如何工作的，或者如何在python中使用它.如果有人对在python中的进程之间发送消息有想法或起点，将不胜感激.
Windows uses something else called messages, but I don't know how it works or how to use it in python. If someone has an idea or a starting point for sending messages between processes in python that would be appreciated.
推荐答案
这实际上取决于您要查找的内容-是要控制消息，非阻塞消息，还是像通常一样捕获外部信号的能力将使用signal模块.
It really depends on what you're looking for- whether you want control over messages, non-blocking messages, or the ability to capture external signals like you normally would with the signal module.
由于要发送两个python进程之间的通知"，因此我推荐multiprocessing.connection模块的Client和Listener类用于一对非常简单的面向消息的连接对象:
Since you want to send "notifications between two python processes" I recommend the multiprocessing.connection module's Client and Listener classes for a very easy message-oriented pair of connection objects:
http://docs.python.org/2/library/multiprocessing.html#module-multiprocessing.connection
在过程A中:
listener = Listener(('localhost', 9000)) # local TCP connections on port 9000
remote_conn = listener.accept()
listener.close()
print remote_conn.recv()
# prints 'a pickle-able object'
print remote_conn.recv()
# prints "['another', 'pickle-able', 'object']"
在过程B中:
client = Client(('localhost', 9000))
client.send('a pickle-able object')
client.send(['another', 'pickle-able', 'object'])
这些类是内置的，这让我很高兴-无需安装！只需注意遵循有关安全性和不破坏数据的文档准则即可.
The fact that these classes are built-in makes me happy- no installations required! Just be careful to follow the docs guidelines about security and un-pickling data.
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