greenlet.settrace()with the same tracer object that was currently active. See issue 332.
Various compilation and standards conformance fixes. See #335, #336, #300, #302, #334.
Python 3.11: Fix a memory leak. See issue 328 and gevent issue 1924.
Programming Language :: Python :: 3.11to the PyPI classifier metadata.
Nothing changed yet.
Linux: Fix another group of rare crashes that could occur when shutting down an interpeter running multiple threads. See issue 325.
Linux: Fix a rare crash that could occur when shutting down an interpreter running multiple threads, when some of those threads are in greenlets making calls to functions that release the GIL.
Python 2: Fix a crash that could occur when raising an old-style instance object.
Workaround a CPython 3.8 bug that could cause the interpreter to crash during an early phase of shutdown with the message “Fatal Python error: Python memory allocator called without holding the GI.” This only impacted CPython 3.8a3 through CPython 3.9a5; the fix is only applied to CPython 3.8 releases (please don’t use an early alpha release of CPython 3.9).
Deal gracefully with greenlet switches that occur while deferred deallocation of objects is happening using CPython’s “trash can” mechanism. Previously, if a large nested container held items that switched greenlets during delayed deallocation, and that second greenlet also invoked the trash can, CPython’s internal state could become corrupt. This was visible as an assertion error in debug builds. Now, the relevant internal state is saved and restored during greenlet switches. See also gevent issue 1909.
Rename the C API function
PyGreenlet_GetParentfor consistency. The old name remains available as a deprecated alias.
Fix a crash on older versions of the Windows C runtime when an unhandled C++ exception was thrown inside a greenlet by another native extension. This is a bug in that extension, and the interpreter will still abort, but at least it does so deliberately. Thanks to Kirill Smelkov. See PR 286.
Musllinux wheels for aarch64 are now built, tested, and uploaded to PyPI. Thanks to Alexander Piskun.
This version of greenlet is known to compile and pass tests on CPython 3.11.0a6. Earlier 3.11 releases will not work; later releases may or may not work. See PR 294. Special thanks to Victor Stinner, Brandt Bucher and the CPython developers.
Add experimental, untested support for 64-bit Windows on ARM using MSVC. See PR 271.
Drop support for very old versions of GCC and MSVC.
Compilation now requires a compiler that either supports C++11 or has some other intrinsic way to create thread local variables; for older GCC, clang and SunStudio we use
__thread, while for older MSVC we use
Wheels compatible with the musllinux specification are built, tested, and uploaded to PyPI for x86_64. (This was retroactively done for version 1.1.2 as well.)
This version of greenlet is known to compile and pass tests on CPython 3.11.0a4. Earlier or later 3.11 releases may or may not work. See PR 280. Special thanks to Brandt Bucher and the CPython developers.
Fix several leaks that could occur when using greenlets from multiple threads. For example, it is no longer necessary to call
getcurrent()before exiting a thread to allow its main greenlet to be cleaned up. See issue 252.
Fix the C API
PyGreenlet_Throwto perform the same error checking that the Python API
greenlet.throw()does. Previously, it did no error checking.
Fix C++ exception handling on 32-bit Windows. This might have ramifications if you embed Python in your application and also use SEH on 32-bit windows, or if you embed Python in a C++ application. Please contact the maintainers if you have problems in this area.
In general, C++ exception handling is expected to be better on most platforms. This work is ongoing.
The repr of some greenlets has changed. In particular, if the greenlet object was running in a thread that has exited, the repr now indicates that. NOTE: The repr of a greenlet is not part of the API and should not be relied upon by production code. It is likely to differ in other implementations such as PyPy.
Main greenlets from threads that have exited are now marked as dead.
Add musllinux (Alpine) binary wheels.
This preliminary support for Python 3.11 leaks memory. Please upgrade to greenlet 2 if you’re using Python 3.11.
Add support for Python 3.11. Please note that Windows binary wheels are not available at this time.
This preliminary support for Python 3.11 leaks memory. Please upgrade to greenlet 2 if you’re using Python 3.11.
Fix a potential crash due to a reference counting error when Python subclasses of
greenlet.greenletwere deallocated. The crash became more common on Python 3.10; on earlier versions, silent memory corruption could result. See issue 245. Patch by fygao-wish.
Fix a leak of a list object when the last reference to a greenlet was deleted from some other thread than the one to which it belonged. For this to work correctly, you must call a greenlet API like
getcurrent()before the thread owning the greenlet exits: this is a long-standing limitation that can also lead to the leak of a thread’s main greenlet if not called; we hope to lift this limitation. Note that in some cases this may also fix leaks of greenlet objects themselves. See issue 251.
Python 3.10: Tracing or profiling into a spawned greenlet didn’t work as expected. See issue 256, reported by Joe Rickerby.
Provide Windows binary wheels for Python 3.10 (64-bit only).
Update Python 3.10 wheels to be built against 3.10rc1, where applicable.
Add support for Python 3.10. Pre-built binary wheels for 3.10 are not currently available for all platforms. The greenlet ABI is different on Python 3.10 from all previous versions, but as 3.10 was never supported before, and the ABI has not changed on other Python versions, this is not considered a reason to change greenlet’s major version.
Fix %s and %r formatting of a greenlet on Python 2. Previously it would result in a Unicode string instead of a native string. See issue 218.
Move continuous integration from Travis CI to Github Actions.
Add the ability to set a greenlet’s PEP 567 contextvars context directly, by assigning to the greenlet’s
gr_contextattribute. This restores support for some patterns of using greenlets atop an async environment that became more challenging in 0.4.17. Thanks to Joshua Oreman, Mike bayer, and Fantix King, among others. See PR 198.
The repr of greenlet objects now includes extra information about its state. This is purely informative and the details are subject to change. See issue 215.
greenletmodule is now a package. There are no API changes, so all existing imports, including from C code, should continue to work.
(C API) The undocumented
GREENLET_VERSIONmacro that defined a string giving the greenlet version is now deprecated and will not be updated.
(Documentation) Publish the change log to https://greenlet.readthedocs.io
Drop support for Python 2.4, 2.5, 2.6, 3.0, 3.1, 3.2 and 3.4. The project metadata now includes the
python_requiresdata to help installation tools understand supported versions.
Add partial support for AIX ppc64 and IBM i. Thanks to Jesse Gorzinski and Kevin Adler. See PR 197.
Require setuptools to build from source.
Stop asking setuptools to build both .tar.gz and .zip sdists. PyPI has standardized on .tar.gz for all platforms.
Stop using a custom distutils command to build extensions. distutils is deprecated.
Remove the ability to use the deprecated command
python setup.py test. Run greenlet tests with your favorite unittest-compatible test runner, e.g.,
python -m unittest discover greenlet.tests. See issue 185.
The directory layout and resulting sdists have changed. See issue 184.
greenlet is now always built with support for tracing and garbage collection, and, on Python 3.7 and above, support for context variables. The internal and undocumented C preprocessor macros that could be used to alter that at compile time have been removed (no combination other than the defaults was ever tested). This helps define a stable ABI.
Support for PEP 567 ContextVars
Support for DEC Alpha architecture
Support for Python 3.9
Support for Python 3.10a0
Support for RISC-V architecture
Workaround a gcc bug on ppc64
Support for C-SKY architecture
Fixed support for ppc64 ABI
Fixed support for Python 3.7
Support for Python 3.7
Support for MinGW x64
Stop using trashcan api
Fixes for aarch64 architecture
Added missing files to manifest
Added workaround for ppc32 on Linux
Start building binary manylinux1 wheels
Fixed Windows builds
Added support for iOS (arm32)
Added support for ppc64le
Added a missing workaround for
return 0on mips
Restore compatibility with Python 2.5
Fixed stack switching on sparc
_stack_savedproperty on greenlet objects, it may be used to introspect the amount of memory used by a saved stack, but the API is subject to change in the future
Added a workaround for
return 0compiler optimizations on all architectures
C API typo fixes
Fixed several bugs in greenlet C API
Fixed a bug in multi-threaded applications, which manifested itself with spurious “cannot switch to a different thread” exceptions
Fixed some crashes on arm and mips architectures
Fixed PyGreenlet_SetParent signature, thanks to BoonsNaibot
Fixed 64-bit Windows builds depending on wrong runtime dll
Better slp_switch performance on SPARC
Drop support for Python 2.3
Fix trashcan assertions on debug builds of Python
Remove deprecated -fno-tree-dominator-opts compiler switch
Enable switch code for SunStudio on 32-bit SunOS
Support for abc abstract methods in greenlet subclasses
Support custom directories for tests
Document switch tracing support
Fix ‘err’ may be used uninitialized in this function
Check _MSC_VER for msvc specific code
Fix slp_switch on SPARC for multi-threaded environments
Add support for m68k
fix segfaults when using gcc 4.8 on amd64/x86 unix
try to disable certain gcc 4.8 optimizations that make greenlet crash
Fix greenlet on aarch64 with gcc 4.8
workaround segfault on SunOS/sun4v
Add support for Aarch64
Add support for x32 psABI on x86_64
Changed memory constraints for assembly macro for PPC Linux platforms.
Greenlet has an instance dictionary now, which means it can be used for implementing greenlet local storage, etc. However, this might introduce incompatibility if subclasses have
__slots__. Classes like that will fail, because greenlet already has
__dict__out of the box.
Greenlet no longer leaks memory after thread termination, as long as terminated thread has no running greenlets left at the time.
Add support for debian sparc and openbsd5-sparc64
Add support for ppc64 linux
Don’t allow greenlets to be copied with copy.copy/deepcopy
Fix arm32/thumb support
Restore greenlet’s parent after kill
Add experimental greenlet tracing
Use plain distutils for install command, this fixes installation of the greenlet.h header.
Enhanced arm32 support
Fix support for Linux/S390 zSeries
Workaround compiler bug on RHEL 3 / CentOS 3
Use sphinx to build documentation and publish it on greenlet.rtfd.org
Prevent segfaults on openbsd 4/i386
Workaround gcc-4.0 not allowing to clobber rbx
Enhance test infrastructure
Fix possible compilation problems when including greenlet.h in C++ mode
Make the greenlet module work on x64 windows
Add a test for greenlet C++ exceptions
Fix compilation on Solaris with SunStudio
Fix various crashes with recent gcc versions and VC90
Try to fix stack save/restore on arm32
Store and restore the threadstate on exceptions like pypy/stackless do
GreenletExit is now based on BaseException on Python >= 2.5
Switch to using PyCapsule for Python 2.7 and 3.1
Port for AIX on PowerPC
Fix the sparc/solaris header
Improved build dependencies patch from flub.
Can’t pass parent=None to greenlet.greenlet() (fixes #21)
Rudimentary gc support (only non-live greenlets are garbage collected though)
Fix reference leak when passing keyword arguments to greenlets (mbachry)
Python 3 support.
New C API to expose Greenlets to C Extensions.
greenlet.switch() now accept’s keyword arguments.
Fix Python crasher caused by switching to new greenlet from another thread.
Fix Python 2.6 crash on Windows when built with VS2009. (arigo)
arm32 support from stackless (Sylvain Baro)
Linux mips support (Thiemo Seufer)
MingGW GCC 4.4 support (Giovanni Bajo)
Fix for a threading bug (issue 40 in py lib) (arigo and ghazel)
Loads more unit tests, some from py lib (3 times as many as Greenlet 0.2)
Add documentation from py lib.
General code, documentation and repository cleanup (Kyle Ambroff, Jared Kuolt)