How do I send and receive real-time signals `sigqueue()` in Python?

Question

Python provides a signals module and os.kill; does it have a facility for sigqueue() (real-time signals with attached data)? What are the alternatives?

Answer 1

You could do it with ctypes

>>> from ctypes import *
>>> c = cdll.LoadLibrary("libc.so.6")
>>> c.sigqueue
<_FuncPtr object at 0xb7dbd77c>
>>> c.sigqueue(100, 10, 0)
-1
>>>

You'll have to look up how to make a union in ctypes which I've never done before but I think is possible.

Answer 2

One alternative, if no one has done it yet, would be to wrap the C library yourself - should be pretty quick and painless. Look here for more details.