diff mbox series

[1/3] python3: drop unneeded multiprocessing module patch

Message ID 20220111221440.3867495-1-alex@linutronix.de
State Accepted, archived
Commit 2eabd3b611f4afa5eafa4490b6b0ef7578b742de
Headers show
Series [1/3] python3: drop unneeded multiprocessing module patch | expand

Commit Message

Alexander Kanavin Jan. 11, 2022, 10:14 p.m. UTC 
pthread has been merged into the main libc library
(and was never separate in musl), so separate linking
for it is no longer needed.

I ran the reproducing sequence on qemux86, qemux86_64 and same targets with musl,
and it went fine:

root@qemux86:~# python3
Python 3.10.0 (default, Oct  4 2021, 17:55:55) [GCC 11.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import multiprocessing
>>> pool_sema = multiprocessing.BoundedSemaphore(value=1)
>>> pool_sema.acquire()
True
>>> pool_sema.release()
>>>

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
---
 ...ssing-libraries-to-Extension-for-mul.patch | 70 -------------------
 .../recipes-devtools/python/python3_3.10.1.bb |  1 -
 2 files changed, 71 deletions(-)
 delete mode 100644 meta/recipes-devtools/python/python3/0001-setup.py-pass-missing-libraries-to-Extension-for-mul.patch
diff mbox series

Patch

diff --git a/meta/recipes-devtools/python/python3/0001-setup.py-pass-missing-libraries-to-Extension-for-mul.patch b/meta/recipes-devtools/python/python3/0001-setup.py-pass-missing-libraries-to-Extension-for-mul.patch
deleted file mode 100644
index 374433c68e..0000000000
--- a/meta/recipes-devtools/python/python3/0001-setup.py-pass-missing-libraries-to-Extension-for-mul.patch
+++ /dev/null
@@ -1,70 +0,0 @@ 
-From bad7e6a625436402a01d03021fb9ccd58bc9930f Mon Sep 17 00:00:00 2001
-From: Alexander Kanavin <alex.kanavin@gmail.com>
-Date: Thu, 9 Jan 2020 17:44:05 +0100
-Subject: [PATCH] setup.py: pass missing libraries to Extension for
- multiprocessing module
-
-In the following commit:
-...
-commit e711cafab13efc9c1fe6c5cd75826401445eb585
-Author: Benjamin Peterson <benjamin@python.org>
-Date:   Wed Jun 11 16:44:04 2008 +0000
-
-    Merged revisions 64104,64117 via svnmerge from
-    svn+ssh://pythondev@svn.python.org/python/trunk
-...
-(see diff in setup.py)
-It assigned libraries for multiprocessing module according
-the host_platform, but not pass it to Extension.
-
-In glibc, the following commit caused two definition of
-sem_getvalue are different.
-https://sourceware.org/git/?p=glibc.git;a=commit;h=042e1521c794a945edc43b5bfa7e69ad70420524
-(see diff in nptl/sem_getvalue.c for detail)
-`__new_sem_getvalue' is the latest sem_getvalue@@GLIBC_2.1
-and `__old_sem_getvalue' is to compat the old version
-sem_getvalue@GLIBC_2.0.
-
-To build python for embedded Linux systems:
-http://www.yoctoproject.org/docs/2.3.1/yocto-project-qs/yocto-project-qs.html
-If not explicitly link to library pthread (-lpthread), it will
-load glibc's sem_getvalue randomly at runtime.
-
-Such as build python on linux x86_64 host and run the python
-on linux x86_32 target. If not link library pthread, it caused
-multiprocessing bounded semaphore could not work correctly.
-...
->>> import multiprocessing
->>> pool_sema = multiprocessing.BoundedSemaphore(value=1)
->>> pool_sema.acquire()
-True
->>> pool_sema.release()
-Traceback (most recent call last):
-  File "<stdin>", line 1, in <module>
-ValueError: semaphore or lock released too many times
-...
-
-And the semaphore issue also caused multiprocessing.Queue().put() hung.
-
-Upstream-Status: Pending
-
-Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
-Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
-
----
- setup.py | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/setup.py b/setup.py
-index d92face..f42bcbb 100644
---- a/setup.py
-+++ b/setup.py
-@@ -1836,7 +1836,7 @@ class PyBuildExt(build_ext):
-             if (sysconfig.get_config_var('HAVE_SEM_OPEN') and not
-                 sysconfig.get_config_var('POSIX_SEMAPHORES_NOT_ENABLED')):
-                 multiprocessing_srcs.append('_multiprocessing/semaphore.c')
--        self.add(Extension('_multiprocessing', multiprocessing_srcs,
-+        self.add(Extension('_multiprocessing', multiprocessing_srcs, libraries=['pthread'],
-                            include_dirs=["Modules/_multiprocessing"]))
- 
-         if (not MS_WINDOWS and
diff --git a/meta/recipes-devtools/python/python3_3.10.1.bb b/meta/recipes-devtools/python/python3_3.10.1.bb
index e7ae687177..d6ac431185 100644
--- a/meta/recipes-devtools/python/python3_3.10.1.bb
+++ b/meta/recipes-devtools/python/python3_3.10.1.bb
@@ -25,7 +25,6 @@  SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.xz \
            file://0001-Use-FLAG_REF-always-for-interned-strings.patch \
            file://0001-test_locale.py-correct-the-test-output-format.patch \
            file://0017-setup.py-do-not-report-missing-dependencies-for-disa.patch \
-           file://0001-setup.py-pass-missing-libraries-to-Extension-for-mul.patch \
            file://0001-Makefile-do-not-compile-.pyc-in-parallel.patch \
            file://0020-configure.ac-setup.py-do-not-add-a-curses-include-pa.patch \
            file://0001-Skip-failing-tests-due-to-load-variability-on-YP-AB.patch \