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| author |   Hongxu Jia <hongxu.jia@windriver.com> | 2017-08-04 04:18:45 -0400 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-08-11 00:08:31 +0100 |
| commit | ca1542cdf6b6437a2f3dcdb33ac5216bf841c04a (patch) | |
| tree | fc4eb8ecc048a70ab7a9873ca607a540b887f8a8 /meta/recipes-devtools/python/python_2.7.13.bb | |
| parent | d96e3ab2a344c40f9b132673923b191ce912d9a4 (diff) | |
| download | openembedded-core-contrib-ca1542cdf6b6437a2f3dcdb33ac5216bf841c04a.tar.gz | |
python2/python3: fix multiprocessing.BoundedSemaphore not work on qemux86/qemuarm
In upstream, the following commit:
https://github.com/python/cpython/commit/e711cafab13efc9c1fe6c5cd75826401445eb585
...
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.
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.
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Diffstat (limited to 'meta/recipes-devtools/python/python_2.7.13.bb')
| -rw-r--r-- | meta/recipes-devtools/python/python_2.7.13.bb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/meta/recipes-devtools/python/python_2.7.13.bb b/meta/recipes-devtools/python/python_2.7.13.bb index 4ef99523e0..98bc8ada8b 100644 --- a/meta/recipes-devtools/python/python_2.7.13.bb +++ b/meta/recipes-devtools/python/python_2.7.13.bb @@ -27,6 +27,7 @@ SRC_URI += "\ file://use_sysroot_ncurses_instead_of_host.patch \ file://add-CROSSPYTHONPATH-for-PYTHON_FOR_BUILD.patch \ file://Don-t-use-getentropy-on-Linux.patch \ + file://pass-missing-libraries-to-Extension-for-mul.patch \ " S = "${WORKDIR}/Python-${PV}" |