[Python-checkins] bpo-28206: Document signals Handlers, Sigmasks and Signals enums (GH-28628)
JulienPalard
webhook-mailer at python.org
Mon Oct 4 07:09:57 EDT 2021
https://github.com/python/cpython/commit/9be930f9b169fb3d92693670ae069df902709b83
commit: 9be930f9b169fb3d92693670ae069df902709b83
branch: main
author: Bibo-Joshi <22366557+Bibo-Joshi at users.noreply.github.com>
committer: JulienPalard <julien at palard.fr>
date: 2021-10-04T13:09:40+02:00
summary:
bpo-28206: Document signals Handlers, Sigmasks and Signals enums (GH-28628)
Co-authored-by: desbma <desbma at users.noreply.github.com>
files:
M Doc/library/signal.rst
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 84a569d03eb29..63821866a012b 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -68,10 +68,34 @@ Module contents
signal (SIG*), handler (:const:`SIG_DFL`, :const:`SIG_IGN`) and sigmask
(:const:`SIG_BLOCK`, :const:`SIG_UNBLOCK`, :const:`SIG_SETMASK`)
related constants listed below were turned into
- :class:`enums <enum.IntEnum>`.
+ :class:`enums <enum.IntEnum>` (:class:`Signals`, :class:`Handlers` and :class:`Sigmasks` respectively).
:func:`getsignal`, :func:`pthread_sigmask`, :func:`sigpending` and
:func:`sigwait` functions return human-readable
- :class:`enums <enum.IntEnum>`.
+ :class:`enums <enum.IntEnum>` as :class:`Signals` objects.
+
+
+The signal module defines three enums:
+
+.. class:: Signals
+
+ :class:`enum.IntEnum` collection of SIG* constants and the CTRL_* constants.
+
+ .. versionadded:: 3.5
+
+.. class:: Handlers
+
+ :class:`enum.IntEnum` collection the constants :const:`SIG_DFL` and :const:`SIG_IGN`.
+
+ .. versionadded:: 3.5
+
+.. class:: Sigmasks
+
+ :class:`enum.IntEnum` collection the constants :const:`SIG_BLOCK`, :const:`SIG_UNBLOCK` and :const:`SIG_SETMASK`.
+
+ Availability: Unix. See the man page :manpage:`sigprocmask(3)` and
+ :manpage:`pthread_sigmask(3)` for further information.
+
+ .. versionadded:: 3.5
The variables defined in the :mod:`signal` module are:
@@ -618,8 +642,8 @@ The :mod:`signal` module defines the following functions:
.. _signal-example:
-Example
--------
+Examples
+--------
Here is a minimal example program. It uses the :func:`alarm` function to limit
the time spent waiting to open a file; this is useful if the file is for a
@@ -631,7 +655,8 @@ be sent, and the handler raises an exception. ::
import signal, os
def handler(signum, frame):
- print('Signal handler called with signal', signum)
+ signame = signal.Signals(signum).name
+ print(f'Signal handler called with signal {signame} ({signum})')
raise OSError("Couldn't open device!")
# Set the signal handler and a 5-second alarm
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