On 08Aug2015 18:17, Chris Angelico <ros...@gmail.com> wrote:
On Sat, Aug 8, 2015 at 6:11 PM, Cameron Simpson <c...@zip.com.au> wrote:
From:
https://docs.python.org/3/library/signal.html#execution-of-python-signal-handlers
we have:
A Python signal handler does not get executed inside the low-level (C)
signal handler. Instead, the low-level signal handler sets a flag which
tells the virtual machine to execute the corresponding Python signal
handler at a later point(for example at the next bytecode instruction).
Ah, thanks. Most importantly, though: Is there anything in the
*language spec*, or is this a CPython implementation detail?
Signals aren't part of the language spec, surely? Though part of the stdlib
clearly.
I'd say the above text from the signal module doco was written from the
viewport of CPython, though it is loose enough in terminology (==> allows
freedom to implementors) to read like generic Python spec than CPython detail.
The other bit of text I quoted:
Python signal handlers are always executed in the main Python thread, even
if the signal was received in another thread.
also reads like specification.
No, I can't prove any of this. It is just how I read the signal module
documentation.
Cheers,
Cameron Simpson <c...@zip.com.au>
No good deed shall go unpunished! - David Wood <davew...@teleport.com>
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