Mailman 3 May 2014 - pypy-dev

Deadlock in cpyext callback
by Nick Williams May 26, 2014

May 26, 2014

We have an extension module which works fine with CPython but deadlocks every time in PyPy. The problem is induced when the C++ code in the module (having been invoked from a Python thread) prepares to call back into Python again by calling PyGILState_Ensure. It seems at this point we try to acquire the GIL mutex while already (presumably) holding it - any other threads at this point are also waiting on the mutex so it isn't held elsewhere. This seems to occur from a call to rffi.… [View More]

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Issue #1777: Unable to create proper numpy array from cffi buffer (pypy/pypy)
by Yichao Yu May 26, 2014

May 26, 2014

New issue 1777: Unable to create proper numpy array from cffi buffer https://bitbucket.org/pypy/pypy/issue/1777/unable-to-create-proper-numpy-ar… Yichao Yu: I am writing something that need to convert a c buffer from cffi to a numpy array with arbitrary shape and strides. Besides the fact that [`as_strided`](https://bitbucket.org/pypy/numpy/issue/9/numpylibstride_tricksas_strided-is-not) is not really working, another problem is that the c buffer is maintained by the underlaying c/c++ library … [View More]

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Issue #1776: Creating instances of a namedtuple is inexplicably very slow (pypy/pypy)
by Alex Gaynor May 23, 2014

May 23, 2014

New issue 1776: Creating instances of a namedtuple is inexplicably very slow https://bitbucket.org/pypy/pypy/issue/1776/creating-instances-of-a-namedtup… Alex Gaynor: Compare: ``` $ pypy -mtimeit -s "from collections import namedtuple; pos = namedtuple('pos', ['x', 'y'])" "p = (1, 2)" 1000000000 loops, best of 3: 0.000867 usec per loop $ pypy -mtimeit -s "from collections import namedtuple; pos = namedtuple('pos', ['x', 'y'])" "p = (1, 2)" 1000000000 loops, best of 3: 0.000867 usec per loop $… [View More]

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PyPy current status
by Antonio Cuni May 23, 2014

May 23, 2014

Hi all, I am preparing the usual "PyPy status talk" which I'll give to the upcoming Pycon Italy, which is going to cover what happened in the last two years of PyPy. If you are interested, the draft slides are here: https://bitbucket.org/pypy/extradoc/src/tip/talk/pycon-italy-2014/talk.rst?… In the talk, I will to give an overview of the current status of the various subprojects, so I'd be glad if you could help because you surely know better than me the status of the area of your competence … [View More]

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Issue #1775: imp.lock_held isn't quite right (pypy/pypy)
by eevee May 22, 2014

May 22, 2014

New issue 1775: imp.lock_held isn't quite right https://bitbucket.org/pypy/pypy/issue/1775/implock_held-isnt-quite-right eevee: PyPy's `lock_held()` returns whether the lock is held by the current thread: https://bitbucket.org/pypy/pypy/src/6e9376d22e0ecc83bfcdda81d0e37e695b435dd… But CPython returns whether the lock is held _at all_: http://hg.python.org/cpython/file/3a1db0d2747e/Python/import.c#l348

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Where is pypy.org?
by Laura Creighton May 21, 2014

May 21, 2014

I am getting a ton of spam as 'contracts(a)pypy.org'. Somewhere that is a mail alias for me. I'd like to remove that alias, or have it removed if it isn't something I can do. This brings up the larger question as to whether that whole address is needed at all, or if it should just bounce. Laura

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Issue #1774: Pypy not translating with gcc 4.9 on Arch Linux x86_64 (pypy/pypy)
by Aidan Epstein May 17, 2014

May 17, 2014

New issue 1774: Pypy not translating with gcc 4.9 on Arch Linux x86_64 https://bitbucket.org/pypy/pypy/issue/1774/pypy-not-translating-with-gcc-49… Aidan Epstein: I am trying to translate the latest version of pypy from the mercurial repositories using the copy of pypy included in the Arch Linux repos. The arch linux version fails after a short amount of time with the attached stack trace. The official version from pypy.org (or rather the portable binaries from https://github.com/squeaky-pl/… [View More]

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Issue #1773: py3k: continuation.test_zpickle test_pickle_continulet_real_subclass triggers a CPython crash (pypy/pypy)
by Philip Jenvey May 16, 2014

May 16, 2014

New issue 1773: py3k: continuation.test_zpickle test_pickle_continulet_real_subclass triggers a CPython crash https://bitbucket.org/pypy/pypy/issue/1773/py3k-continuationtest_zpickle Philip Jenvey: test_pickle_continulet_real_subclass has been disabled on the py3k branch for now as it can trigger a seg fault when running under CPython. It'll crash with a "Fatal Python error: GC object already tracked", or at least on OSX: "malloc: *** error for object 0x109620af0: pointer being realloc'd … [View More]

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Issue #1772: Complex dtype unhashable. (pypy/pypy)
by Yichao Yu May 16, 2014

May 16, 2014

New issue 1772: Complex dtype unhashable. https://bitbucket.org/pypy/pypy/issue/1772/complex-dtype-unhashable Yichao Yu: In pypy, ``` pypy -c 'import numpy as np; t = np.dtype([("s1", np.int8), ("s2", np.int8)]); print(hash(t))' Traceback (most recent call last): File "app_main.py", line 75, in run_toplevel File "app_main.py", line 581, in run_it File "<string>", line 1, in <module> TypeError: 'dict' objects are unhashable ``` In CPython ``` python2 -c 'import … [View More]

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Issues moved to Bitbucket
by Sebastian Pawluś May 16, 2014

May 16, 2014

Hi Small announcement. The new location for PyPy's issues/bugs from now on is on Bitbucket https://bitbucket.org/pypy/pypy/issues The old location (bugs.pypy.org) should be working, but only as a redirect to Bitbucket issues page. Fijał is working on it :) Special thanks to Marcus Bertrand (Bitbucket guy) for help. regards, sebastian pawluś

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