Steve Dower [Wed, 20 Nov 2019 17:30:47 +0000 (09:30 -0800)]
bpo-33125: Add support for building and releasing Windows ARM64 packages (GH-16828)
Note that the support is not actually enabled yet, and so we won't be publishing these packages. However, for those who want to build it themselves (even by reusing the Azure Pipelines definition), it's now relatively easy to enable.
Victor Stinner [Wed, 20 Nov 2019 10:48:18 +0000 (11:48 +0100)]
bpo-36854: gcmodule.c gets its state from tstate (GH-17285)
* Add GCState type for readability
* gcmodule.c now gets its gcstate from tstate
* _PyGC_DumpShutdownStats() now expects tstate rather than runtime
* Rename "state" to "gcstate" for readability: to avoid confusion
between "state" and "tstate" for example.
* collect() now only expects tstate: it gets gcstate from tstate.
* Pass tstate to _PyErr_xxx() functions
Victor Stinner [Wed, 20 Nov 2019 10:17:17 +0000 (11:17 +0100)]
bpo-36854: Clear the current thread later (GH-17279)
Clear the current thread later in the Python finalization.
* The PyInterpreterState_Delete() function is now responsible
to call PyThreadState_Swap(NULL).
* The tstate_delete_common() function is now responsible to clear the
"autoTSSKey" thread local storage and it only clears it once the
thread state is fully cleared. It allows to still get the current
thread from TSS in tstate_delete_common().
* Factorize code in common between Py_FinalizeEx() and
Py_EndInterpreter().
* Py_EndInterpreter() now also calls _PyWarnings_Fini().
* Call _PyExc_Fini() and _PyGC_Fini() later in the finalization.
This exposes a Linux-specific syscall for sending a signal to a process
identified by a file descriptor rather than a pid.
For simplicity, we don't support the siginfo_t parameter to the syscall. This
parameter allows implementing a pidfd version of rt_sigqueueinfo(2), which
Python also doesn't support.
Victor Stinner [Wed, 20 Nov 2019 01:51:30 +0000 (02:51 +0100)]
bpo-38835: Don't use PyFPE_START_PROTECT and PyFPE_END_PROTECT (GH-17231)
The PyFPE_START_PROTECT() and PyFPE_END_PROTECT() macros are empty:
they have been doing nothing for the last year (since commit 735ae8d139a673b30b321dc10acfd3d14f0d633b), so stop using them.
Victor Stinner [Wed, 20 Nov 2019 01:27:56 +0000 (02:27 +0100)]
bpo-36710: Add PyInterpreterState.runtime field (GH-17270)
Add PyInterpreterState.runtime field: reference to the _PyRuntime
global variable. This field exists to not have to pass runtime in
addition to tstate to a function. Get runtime from tstate:
tstate->interp->runtime.
Remove "_PyRuntimeState *runtime" parameter from functions already
taking a "PyThreadState *tstate" parameter.
_PyGC_Init() first parameter becomes "PyThreadState *tstate".
Pablo Galindo [Tue, 19 Nov 2019 23:46:49 +0000 (23:46 +0000)]
bpo-37957: Allow regrtest to receive a file with test (and subtests) to ignore (GH-16989)
When building Python in some uncommon platforms there are some known tests that will fail. Right now, the test suite has the ability to ignore entire tests using the -x option and to receive a filter file using the --matchfile filter. The problem with the --matchfile option is that it receives a file with patterns to accept and when you want to ignore a couple of tests and subtests, is too cumbersome to lists ALL tests that are not the ones that you want to accept and he problem with -x is that is not easy to ignore just a subtests that fail and the whole test needs to be ignored.
For these reasons, add a new option to allow to ignore a list of test and subtests for these situations.
Pablo Galindo [Tue, 19 Nov 2019 21:34:03 +0000 (21:34 +0000)]
Remove binding of captured exceptions when not used to reduce the chances of creating cycles (GH-17246)
Capturing exceptions into names can lead to reference cycles though the __traceback__ attribute of the exceptions in some obscure cases that have been reported previously and fixed individually. As these variables are not used anyway, we can remove the binding to reduce the chances of creating reference cycles.
Jake Tesler [Tue, 19 Nov 2019 19:50:12 +0000 (11:50 -0800)]
bpo-38707: Fix for multiprocessing.Process MainThread.native_id (GH-17088)
This PR implements a fix for `multiprocessing.Process` objects; the error occurs when Processes are created using either `fork` or `forkserver` as the `start_method`.
In these instances, the `MainThread` of the newly created `Process` object retains all attributes from its parent's `MainThread` object, including the `native_id` attribute. The resulting behavior is such that the new process' `MainThread` captures an incorrect/outdated `native_id` (the parent's instead of its own).
This change forces the Process object to update its `native_id` attribute during the bootstrap process.
Victor Stinner [Mon, 18 Nov 2019 16:40:07 +0000 (17:40 +0100)]
bpo-38631: Avoid Py_FatalError() in _multibytecodec init (GH-17233)
If an exception is raised and PyInit__multibytecodec() returns NULL,
Python reports properly the exception to the user. There is no need
to crash Python with Py_FatalError().
Ensure isabs() is always True for \\?\ prefixed paths
Avoid unnecessary usage of readlink() to avoid resolving broken links incorrectly
Ensure shutil tests run in test directory
Phil Connell [Fri, 15 Nov 2019 16:56:03 +0000 (16:56 +0000)]
bpo-38778: Document that os.fork is not allowed in subinterpreters (GH-17123)
Small docs update for [bpo-34651](https://bugs.python.org/issue34651).
Other references to fork (e.g. the PyOS.*Fork functions or discussions of fork() when embedding Python) point back to os.fork, so I don't think any other updates are needed.
Daniel Andersson [Wed, 13 Nov 2019 09:03:45 +0000 (10:03 +0100)]
bpo-38781: Clear buffer in MemoryHandler flush (GH-17132)
This makes it easier to use a custom buffer when subclassing
MemoryHandler (by avoiding the explicity empty list literal
assignment in the flush method). For example, collection.deque
can now be used without any modifications to MemoryHandler.flush.
Serhiy Storchaka [Tue, 12 Nov 2019 14:57:03 +0000 (16:57 +0200)]
bpo-38738: Fix formatting of True and False. (GH-17083)
* "Return true/false" is replaced with "Return ``True``/``False``"
if the function actually returns a bool.
* Fixed formatting of some True and False literals (now in monospace).
* Replaced "True/False" with "true/false" if it can be not only bool.
* Replaced some 1/0 with True/False if it corresponds the code.
* "Returns <bool>" is replaced with "Return <bool>".