forked from brl/citadel
83 lines
2.9 KiB
Diff
83 lines
2.9 KiB
Diff
From a784b70d47ba2104afbcfd805e2a66cdc2109ec5 Mon Sep 17 00:00:00 2001
|
|
From: Hongxu Jia <hongxu.jia@windriver.com>
|
|
Date: Fri, 4 Aug 2017 11:16:14 +0800
|
|
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: Submitted [https://github.com/python/cpython/pull/2999]
|
|
|
|
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
|
|
---
|
|
setup.py | 7 +++++--
|
|
1 file changed, 5 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/setup.py b/setup.py
|
|
index 4f0f522..d05707d 100644
|
|
--- a/setup.py
|
|
+++ b/setup.py
|
|
@@ -1606,8 +1606,10 @@ class PyBuildExt(build_ext):
|
|
elif host_platform.startswith('netbsd'):
|
|
macros = dict()
|
|
libraries = []
|
|
-
|
|
- else: # Linux and other unices
|
|
+ elif host_platform.startswith(('linux')):
|
|
+ macros = dict()
|
|
+ libraries = ['pthread']
|
|
+ else: # Other unices
|
|
macros = dict()
|
|
libraries = ['rt']
|
|
|
|
@@ -1626,6 +1628,7 @@ class PyBuildExt(build_ext):
|
|
if sysconfig.get_config_var('WITH_THREAD'):
|
|
exts.append ( Extension('_multiprocessing', multiprocessing_srcs,
|
|
define_macros=list(macros.items()),
|
|
+ libraries=libraries,
|
|
include_dirs=["Modules/_multiprocessing"]))
|
|
else:
|
|
missing.append('_multiprocessing')
|
|
--
|
|
2.7.4
|
|
|