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This PR updates gevent from 1.4.0 to 20.6.2.
Changelog
### 20.6.2 ``` =================== Features -------- - It is now possible to build and use the embedded libuv on a Cygwin platform. Note that Cygwin is not an officially supported platform of upstream libuv and is not tested by gevent, so the actual working status is unknown, and this may bitrot in future releases. Thanks to berkakinci for the patch. See :issue:`issue1645`. Bugfixes -------- - Relax the version constraint for psutil on PyPy. Previously it was pinned to 5.6.3 for PyPy2, except for on Windows, where it was excluded. It is now treated the same as CPython again. See :issue:`issue1643`. ---- ``` ### 20.6.1 ``` =================== Features -------- - gevent's CI is now tested on Ubuntu 18.04 (Bionic), an upgrade from 16.04 (Xenial). See :issue:`1623`. Bugfixes -------- - On Python 2, the dnspython resolver can be used without having selectors2 installed. Previously, an ImportError would be raised. See :issue:`issue1641`. - Python 3 ``gevent.ssl.SSLSocket`` objects no longer attempt to catch ``ConnectionResetError`` and treat it the same as an ``SSLError`` with ``SSL_ERROR_EOF`` (typically by suppressing it). This was a difference from the way the standard library behaved (which is to raise the exception). It was added to gevent during early testing of OpenSSL 1.1 and TLS 1.3. See :issue:`1637`. ---- ``` ### 20.6.0 ``` =================== Features -------- - Add ``gevent.selectors`` containing ``GeventSelector``. This selector implementation uses gevent details to attempt to reduce overhead when polling many file descriptors, only some of which become ready at any given time. This is monkey-patched as ``selectors.DefaultSelector`` by default. This is available on Python 2 if the ``selectors2`` backport is installed. (This backport is installed automatically using the ``recommended`` extra.) When monkey-patching, ``selectors`` is made available as an alias to this module. See :issue:`1532`. - Depend on greenlet >= 0.4.16. This is required for CPython 3.9 and 3.10a0. See :issue:`1627`. - Add support for Python 3.9. No binary wheels are available yet, however. See :issue:`1628`. Bugfixes -------- - ``gevent.socket.create_connection`` and ``gevent.socket.socket.connect`` no longer ignore IPv6 scope IDs. Any IP address (IPv4 or IPv6) is no longer subject to an extra call to ``getaddrinfo``. Depending on the resolver in use, this is likely to change the number and order of greenlet switches. (On Windows, in particular test cases when there are no other greenlets running, it has been observed to lead to ``LoopExit`` in scenarios that didn't produce that before.) See :issue:`1634`. ---- ``` ### 20.5.2 ``` =================== Bugfixes -------- - Forking a process that had use the threadpool to run tasks that created their own hub would fail to clean up the threadpool by raising ``greenlet.error``. See :issue:`1631`. ---- ``` ### 20.5.1 ``` =================== Features -------- - Waiters on Event and Semaphore objects that call ``wait()`` or ``acquire()``, respectively, that find the Event already set, or the Semaphore available, no longer "cut in line" and run before any previously scheduled greenlets. They now run in the order in which they arrived, just as waiters that had to block in those methods do. See :issue:`1520`. - Update tested PyPy version from 7.3.0 to 7.3.1 on Linux. See :issue:`1569`. - Make ``zope.interface``, ``zope.event`` and (by extension) ``setuptools`` required dependencies. The ``events`` install extra now does nothing and will be removed in 2021. See :issue:`1619`. - Update bundled libuv from 1.36.0 to 1.38.0. See :issue:`1621`. - Update bundled c-ares from 1.16.0 to 1.16.1. On macOS, stop trying to adjust c-ares headers to make them universal. See :issue:`1624`. Bugfixes -------- - Make gevent locks that are monkey-patched usually work across native threads as well as across greenlets within a single thread. Locks that are only used in a single thread do not take a performance hit. While cross-thread locking is relatively expensive, and not a recommended programming pattern, it can happen unwittingly, for example when using the threadpool and ``logging``. Before, cross-thread lock uses might succeed, or, if the lock was contended, raise ``greenlet.error``. Now, in the contended case, if the lock has been acquired by the main thread at least once, it should correctly block in any thread, cooperating with the event loop of both threads. In certain (hopefully rare) cases, it might be possible for contended case to raise ``LoopExit`` when previously it would have raised ``greenlet.error``; if these cases are a practical concern, please open an issue. Also, the underlying Semaphore always behaves in an atomic fashion (as if the GIL was not released) when PURE_PYTHON is set. Previously, it only correctly did so on PyPy. See :issue:`issue1437`. - Rename gevent's C accelerator extension modules using a prefix to avoid clashing with other C extensions. See :issue:`1480`. - Using ``gevent.wait`` on an ``Event`` more than once, when that Event is already set, could previously raise an AssertionError. As part of this, exceptions raised in the main greenlet will now include a more complete traceback from the failing greenlet. See :issue:`1540`. - Avoid closing the same Python libuv watcher IO object twice. Under some circumstances (only seen on Windows), that could lead to program crashes. See :issue:`1587`. - gevent can now be built using Cython 3.0a5 and newer. The PyPI distribution uses this version. The libev extension was incompatible with this. As part of this, certain internal, undocumented names have been changed. (Technically, gevent can be built with Cython 3.0a2 and above. However, up through 3.0a4 compiling with Cython 3 results in gevent's test for memory leaks failing. See `this Cython issue <https://github.com/cython/cython/issues/3578>`_.) See :issue:`1599`. - Destroying a hub after joining it didn't necessarily clean up all resources associated with the hub, especially if the hub had been created in a secondary thread that was exiting. The hub and its parent greenlet could be kept alive. Now, destroying a hub drops the reference to the hub and ensures it cannot be switched to again. (Though using a new blocking API call may still create a new hub.) Joining a hub also cleans up some (small) memory resources that might have stuck around for longer before as well. See :issue:`1601`. - Fix some potential crashes under libuv when using ``gevent.signal_handler``. The crashes were seen running the test suite and were non-deterministic. See :issue:`1606`. ---- ``` ### 20.5.0 ``` =================== Features -------- - Update bundled c-ares to version 1.16.0. `Changes <https://c-ares.haxx.se/changelog.html>`_. See :issue:`1588`. - Update all the bundled ``config.guess`` and ``config.sub`` scripts. See :issue:`1589`. - Update bundled libuv from 1.34.0 to 1.36.0. See :issue:`1597`. Bugfixes -------- - Use ``ares_getaddrinfo`` instead of a manual lookup. This requires c-ares 1.16.0. Note that this may change the results, in particular their order. As part of this, certain parts of the c-ares extension were adapted to use modern Cython idioms. A few minor errors and discrepancies were fixed as well, such as ``gethostbyaddr('localhost')`` working on Python 3 and failing on Python 2. The DNSpython resolver now raises the expected TypeError in more cases instead of an AttributeError. See :issue:`1012`. - The c-ares and DNSPython resolvers now raise exceptions much more consistently with the standard resolver. Types and errnos are substantially more likely to match what the standard library produces. Depending on the system and configuration, results may not match exactly, at least with DNSPython. There are still some rare cases where the system resolver can raise ``herror`` but DNSPython will raise ``gaierror`` or vice versa. There doesn't seem to be a deterministic way to account for this. On PyPy, ``getnameinfo`` can produce results when CPython raises ``socket.error``, and gevent's DNSPython resolver also raises ``socket.error``. In addition, several other small discrepancies were addressed, including handling of localhost and broadcast host names. .. note:: This has been tested on Linux (CentOS and Ubuntu), macOS, and Windows. It hasn't been tested on other platforms, so results are unknown for them. The c-ares support, in particular, is using some additional socket functions and defines. Please let the maintainers know if this introduces issues. See :issue:`1459`. ---- ``` ### 20.04.0 ``` ==================== Features -------- - Let CI (Travis and Appveyor) build and upload release wheels for Windows, macOS and manylinux. As part of this, (a subset of) gevent's tests can run if the standard library's ``test.support`` module has been stripped. See :issue:`1555`. - Update tested PyPy version from 7.2.0 on Windows to 7.3.1. See :issue:`1569`. Bugfixes -------- - Fix a spurious warning about watchers and resource leaks on libuv on Windows. Reported by Stéphane Rainville. See :issue:`1564`. - Make monkey-patching properly remove ``select.epoll`` and ``select.kqueue``. Reported by Kirill Smelkov. See :issue:`1570`. - Make it possible to monkey-patch :mod:`contextvars` before Python 3.7 if a non-standard backport that uses the same name as the standard library does is installed. Previously this would raise an error. Reported by Simon Davy. See :issue:`1572`. - Fix destroying the libuv default loop and then using the default loop again. See :issue:`1580`. - libuv loops that have watched children can now exit. Previously, the SIGCHLD watcher kept the loop alive even if there were no longer any watched children. See :issue:`1581`. Deprecations and Removals ------------------------- - PyPy no longer uses the Python allocation functions for libuv and libev allocations. See :issue:`1569`. Misc ---- - See :issue:`1367`. ---- ```Links
- PyPI: https://pypi.org/project/gevent - Changelog: https://pyup.io/changelogs/gevent/ - Homepage: http://www.gevent.org/