Author: Matti Picus <[email protected]> Branch: Changeset: r90685:f0ba73fcc87c Date: 2017-03-14 22:59 +0200 http://bitbucket.org/pypy/pypy/changeset/f0ba73fcc87c/
Log: add draft of combined release doc diff --git a/pypy/doc/release-v5.7.0.rst b/pypy/doc/release-v5.7.0.rst new file mode 100644 --- /dev/null +++ b/pypy/doc/release-v5.7.0.rst @@ -0,0 +1,182 @@ +============================================= +PyPy2.7 and PyPy3.5 v5.7 - two in one release +============================================= + +We have released PyPy2.7 and a beta-quality PyPy3.5 v5.7. +This new PyPy2.7 release includes the upstream stdlib version 2.7.13, and +PyPy 3.5 (our first in the 3.5 series) includes the upstream stdlib version +3.5.3. + +We continue to make incremental improvements to our C-API +compatibility layer (cpyext). PyPy2 can now import and run many c-extension +packages, among the most notable are numpy, cython, and pandas. Performance may +be slower than CPython, especially for frequently-called short C functions. +Please let us know if your use case is slow, we have ideas how to make things +faster but need real-world examples (not micro-benchmarks) of problematic code. + +Work proceeds at a good pace on the PyPy3.5 +version due to a grant_ from the Mozilla Foundation, hence our first 3.5.3 beta +release. Thanks Mozilla !!! While we do not pass all tests, asyncio works +as `these benchmarks show`_ it already gives a nice speed bump. +We also backported the ``f""`` formatting from 3.6. + +CFFI_ has been updated to 1.10, improving an already great package for +interfacing with C. + +As always, this release fixed many issues and bugs raised by the +growing community of PyPy users. We strongly recommend updating. + +You can download the v5.7 release here: + + http://pypy.org/download.html + +We would like to thank our donors for the continued support of the PyPy +project. + +We would also like to thank our contributors and +encourage new people to join the project. PyPy has many +layers and we need help with all of them: `PyPy`_ and `RPython`_ documentation +improvements, tweaking popular `modules`_ to run on pypy, or general `help`_ +with making RPython's JIT even better. + +.. _CFFI: https://cffi.readthedocs.io/en/latest/whatsnew.html +.. _grant: https://morepypy.blogspot.com/2016/08/pypy-gets-funding-from-mozilla-for.html +.. _`PyPy`: index.html +.. _`RPython`: https://rpython.readthedocs.org +.. _`modules`: project-ideas.html#make-more-python-modules-pypy-friendly +.. _`help`: project-ideas.html +.. _`these benchmarks show`: https://morepypy.blogspot.com/2017/03/async-http-benchmarks-on-pypy3.html + +What is PyPy? +============= + +PyPy is a very compliant Python interpreter, almost a drop-in replacement for +CPython 2.7 and CPython 3.5. It's fast (`PyPy and CPython 2.7.x`_ performance comparison) +due to its integrated tracing JIT compiler. + +We also welcome developers of other `dynamic languages`_ to see what RPython +can do for them. + +This release supports: + + * **x86** machines on most common operating systems + (Linux 32/64 bits, Mac OS X 64 bits, Windows 32 bits, OpenBSD, FreeBSD) + + * newer **ARM** hardware (ARMv6 or ARMv7, with VFPv3) running Linux, + + * big- and little-endian variants of **PPC64** running Linux, + + * **s390x** running Linux + +.. _`PyPy and CPython 2.7.x`: http://speed.pypy.org +.. _`dynamic languages`: http://rpython.readthedocs.io/en/latest/examples.html + +Highlights of the PyPy2.7, cpyext, and RPython changes (since 5.6 released Nov, 2016) +============================================================================================= + +See also issues that were resolved_ + +* New features and cleanups + + * update the format of the PYPYLOG file and improvements to vmprof + * improve the consistency of RPython annotation unions + * emit more sysconfig values for downstream cextension packages + * add PyAnySet_Check, PyModule_GetName, PyWeakref_Check*, + _PyImport_{Acquire,Release}Lock, PyGen_Check*, PyOS_AfterFork, + * add translation option --keepgoing to continue after the first AnnotationError + * detect and raise on recreation of a PyPy object from a PyObject during + tp_dealloc + * refactor and clean up poor handling of unicode exposed in work on py3.5 + * builtin cppyy_ supports C++ 11, 14, etc. via cling (reflex has been removed) + * add translation time --disable_entrypoints option for embedding PyPy together + with another RPython VM + * adapt ``weakref`` according to Python issue #19542, will be in CPython 2.7.14 + * support translations with cpyext and the Boehm GC (for special cases like + revdb + * implement ``StringBuffer.get_raw_address`` for the buffer protocol, it is + now possible to obtain the address of any readonly object without pinning it + * refactor the initialization code in translating cpyext + * fix ``"".replace("", "x", num)`` to give the same result as CPython + * use a cffi-style C parser to create rffi objects in cpyext, now the + translating python must have cffi available + * add a rpython implementation of siphash24, allow choosing hash algorithm + randomizing the seed + * make ``attach_gdb`` work on Windows (with Visual Studio Debugger) + * implement ``move_to_end(last=True/False)`` on RPython ordered dicts, make + available as ``__pypy__.move_to_end`` and, on py3.5, + ``OrderedDict.move_to_end()`` + * remove completely RPython ``space.wrap`` in a major cleanup, differentiate + between ``space.newtext`` and ``space.newbytes`` on py3.5 + * improve shadowstack to where it is now the default in place of asmgcc + +* Bug Fixes + + * any uncaught RPython exception in the interpreter is turned into a + SystemError (rather than a segfault) + * create log files without the executable bit + * disable clock_gettime() on OS/X, since we support 10.11 and it was only + added in 10.12 + * support HAVE_FSTATVFS which was unintentionally always false + * fix user-created C-API heaptype, issue #2434 + * fix PyDict_Update is not actually the same as dict.update + * assign tp_doc on PyTypeObject and tie it to the app-level __doc__ attribute + issue #2446 + * clean up memory leaks around ``PyObject_GetBuffer``, ``PyMemoryView_GET_BUFFER``, + ``PyMemoryView_FromBuffer``, and ``PyBuffer_Release`` + * improve support for creating c-extension objects from app-level classes, + filling more slots especially ``tp_new`` and ``tp_dealloc`` + * add rstack.stack_almost_full() and use it to avoid stack overflow due to + the JIT where possible + * fix for ctypes.c_bool returning bool restype issue #2475 + * fix in corner cases with the GIL and C-API functions + +* Performance improvements: + + * clean-ups in the jit optimizeopt + * optimize ``if x is not None: return x`` or ``if x != 0: return x`` + * add ``jit.conditional_call_elidable()``, a way to tell the JIT + "conditonally call this function" returning a result + * try harder to propagate ``can_be_None=False`` information + * add ``rarithmetic.ovfcheck_int32_add/sub/mul`` + * add and use ``rgc.may_ignore_finalizer()``: an optimization hint that makes + the GC stop tracking the object + * replace malloc+memset with a single calloc, useful for large allocations? + * linux: try to implement os.urandom() as the syscall getrandom() if available + * propagate ``debug.ll_assert_not_none()`` through the JIT to reduce number of + guards + * improve the performance of ``PyDict_Next`` + * improve ``dict.pop()`` + * improve the optimization of branchy Python code by retaining more + information across failing guards + * add optimized "zero-copy" path for ``io.FileIO.readinto`` + +Highlights of the PyPy3.5 release (since 5.5 alpha released Oct, 2016) +========================================================= + +Development moved from the py3k branch to the py3.5 branch in the pypy bitbucket repo + +* New features + + * this first PyPy3.5 release implements much, but not all, of Python 3.5.3 + * PEP 456 allowing secure and interchangable hash algorithms + * use cryptography_'s cffi backend for SSL + +* Bug Fixes + + * implement fixes for some CPython issues that arose since the last release + * solve deadlocks in thread locking mechanism + +* Performance improvements: + + * do not create a list whenever descr_new of a bytesobject is called + * + * + * + +.. _resolved: whatsnew-pypy2-5.7.0.html +.. _cryptography: https://cryptography.io +.. _cppyy: cppyy.html + +Please update, and continue to help us make PyPy better. + +Cheers _______________________________________________ pypy-commit mailing list [email protected] https://mail.python.org/mailman/listinfo/pypy-commit
