Commit graph

418 commits

Author SHA1 Message Date
Miss Islington (bot)
91ae3307ee
[3.13] gh-129900: Fix SystemExit return codes when the REPL is started from the command line (GH-129901) (#131734)
gh-129900: Fix `SystemExit` return codes when the REPL is started from the command line (GH-129901)
(cherry picked from commit 90b82f2b61)

Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
2025-03-25 20:15:00 +00:00
Serhiy Storchaka
7c1b76fce8
[3.13] gh-130163: Fix crashes related to PySys_GetObject() (GH-130503) (GH-130556)
The use of PySys_GetObject() and _PySys_GetAttr(), which return a borrowed
reference, has been replaced by using one of the following functions, which
return a strong reference and distinguish a missing attribute from an error:
_PySys_GetOptionalAttr(), _PySys_GetOptionalAttrString(),
_PySys_GetRequiredAttr(), and _PySys_GetRequiredAttrString().
(cherry picked from commit 0ef4ffeefd)
2025-02-25 22:50:26 +00:00
Peter Bierma
1ec36a62eb
[3.13] gh-128717: Stop-the-world when setting the recursion limit (GH-128741) (#128757)
[3.13] gh-128717: Stop-the-world when setting the recursion limit (GH-128741)
(cherry picked from commit f6c61bf2d7)

Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
2025-01-14 13:33:52 +05:30
Miss Islington (bot)
52b57eee64
[3.13] gh-125842: Fix sys.exit(0xffff_ffff) on Windows (GH-125896) (GH-125925)
On Windows, `long` is a signed 32-bit integer so it can't represent
`0xffff_ffff` without overflow. Windows exit codes are unsigned 32-bit
integers, so if a child process exits with `-1`, it will be represented
as `0xffff_ffff`.

Also fix a number of other possible cases where `_Py_HandleSystemExit`
could return with an exception set, leading to a `SystemError` (or
fatal error in debug builds) later on during shutdown.
(cherry picked from commit ad6110a93f)

Co-authored-by: Sam Gross <colesbury@gmail.com>
2024-10-24 16:27:30 +00:00
Miss Islington (bot)
57ba3b0c6e
[3.13] gh-122527: Fix a crash on deallocation of PyStructSequence (GH-122577) (#122625)
gh-122527: Fix a crash on deallocation of `PyStructSequence` (GH-122577)

The `PyStructSequence` destructor would crash if it was deallocated after
its type's dictionary was cleared by the GC, because it couldn't compute
the "real size" of the instance. This could occur with relatively
straightforward code in the free-threaded build or with a reference
cycle involving the type in the default build, due to differing orders
in which `tp_clear()` was called.

Account for the non-sequence fields in `tp_basicsize` and use that,
along with `Py_SIZE()`, to compute the "real" size of a
`PyStructSequence` in the dealloc function. This avoids the accesses to
the type's dictionary during dealloc, which were unsafe.
(cherry picked from commit 4b63cd170e)

Co-authored-by: Sam Gross <colesbury@gmail.com>
2024-09-02 12:47:18 +02:00
Miss Islington (bot)
233ed46e6d
[3.13] gh-118934: Make PyEval_GetLocals return borrowed reference (GH-119769) (#121869)
gh-118934: Make PyEval_GetLocals return borrowed reference (GH-119769)
(cherry picked from commit e65cb4c6f0)

Co-authored-by: Tian Gao <gaogaotiantian@hotmail.com>
Co-authored-by: Alyssa Coghlan <ncoghlan@gmail.com>
2024-07-19 01:38:28 +10:00
Petr Viktorin
9769b7ae06
[3.13] gh-113993: Allow interned strings to be mortal, and fix related issues (GH-120520) (GH-120945)
* Add an InternalDocs file describing how interning should work and how to use it.

* Add internal functions to *explicitly* request what kind of interning is done:
  - `_PyUnicode_InternMortal`
  - `_PyUnicode_InternImmortal`
  - `_PyUnicode_InternStatic`

* Switch uses of `PyUnicode_InternInPlace` to those.

* Disallow using `_Py_SetImmortal` on strings directly.
  You should use `_PyUnicode_InternImmortal` instead:
  - Strings should be interned before immortalization, otherwise you're possibly
    interning a immortalizing copy.
  - `_Py_SetImmortal` doesn't handle the `SSTATE_INTERNED_MORTAL` to
    `SSTATE_INTERNED_IMMORTAL` update, and those flags can't be changed in
    backports, as they are now part of public API and version-specific ABI.

* Add private `_only_immortal` argument for `sys.getunicodeinternedsize`, used in refleak test machinery.

* Make sure the statically allocated string singletons are unique. This means these sets are now disjoint:
  - `_Py_ID`
  - `_Py_STR` (including the empty string)
  - one-character latin-1 singletons

  Now, when you intern a singleton, that exact singleton will be interned.

* Add a `_Py_LATIN1_CHR` macro, use it instead of `_Py_ID`/`_Py_STR` for one-character latin-1 singletons everywhere (including Clinic).

* Intern `_Py_STR` singletons at startup.

* For free-threaded builds, intern `_Py_LATIN1_CHR` singletons at startup.

* Beef up the tests. Cover internal details (marked with `@cpython_only`).

* Add lots of assertions

Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
2024-06-24 20:24:19 +02:00
Miss Islington (bot)
0a266f7e74
[3.13] gh-74929: PEP 667 C API documentation (gh-119892)
* Add docs for new APIs
* Add soft-deprecation notices
* Add What's New porting entries
* Update comments referencing `PyFrame_LocalsToFast()` to mention the proxy instead
* Other related cleanups found when looking for refs to the deprecated APIs

(cherry picked from commit 3859e09e3d)

Co-authored-by: Alyssa Coghlan <ncoghlan@gmail.com>
2024-06-01 04:23:04 +00:00
Jeong, YunWon
8d8275b0cf
gh-118473: Fix set_asyncgen_hooks not to be partially set when arguments are invalid (#118474) 2024-05-06 17:02:52 -07:00
Tian Gao
b034f14a4b
gh-74929: Implement PEP 667 (GH-115153) 2024-05-04 12:12:10 +01:00
Brett Simmers
c2627d6eea
gh-116322: Add Py_mod_gil module slot (#116882)
This PR adds the ability to enable the GIL if it was disabled at
interpreter startup, and modifies the multi-phase module initialization
path to enable the GIL when loading a module, unless that module's spec
includes a slot indicating it can run safely without the GIL.

PEP 703 called the constant for the slot `Py_mod_gil_not_used`; I went
with `Py_MOD_GIL_NOT_USED` for consistency with gh-104148.

A warning will be issued up to once per interpreter for the first
GIL-using module that is loaded. If `-v` is given, a shorter message
will be printed to stderr every time a GIL-using module is loaded
(including the first one that issues a warning).
2024-05-03 11:30:55 -04:00
Sam Gross
2dae505e87
gh-117514: Add sys._is_gil_enabled() function (#118514)
The function returns `True` or `False` depending on whether the GIL is
currently enabled. In the default build, it always returns `True`
because the GIL is always enabled.
2024-05-03 11:09:57 -04:00
Pablo Galindo Salgado
345e1e04ec
gh-112730: Make the test suite resilient to color-activation environment variables (#117672) 2024-04-24 21:25:22 +01:00
mpage
df73179048
gh-111926: Make weakrefs thread-safe in free-threaded builds (#117168)
Most mutable data is protected by a striped lock that is keyed on the
referenced object's address. The weakref's hash is protected using the
weakref's per-object lock.
 
Note that this only affects free-threaded builds. Apart from some minor
refactoring, the added code is all either gated by `ifdef`s or is a no-op
(e.g. `Py_BEGIN_CRITICAL_SECTION`).
2024-04-08 10:58:38 -04:00
Erlend E. Aasland
ea94b3b149
gh-116303: Skip test module dependent tests if test modules are unavailable (#117341) 2024-04-03 15:11:36 +02:00
Sam Gross
01bd74eadb
gh-117300: Use stop the world to make sys._current_frames and sys._current_exceptions thread-safe. (#117301)
This adds a stop the world pause to make the two functions thread-safe
when the GIL is disabled in the free-threaded build.

Additionally, the main test thread may call `sys._current_exceptions()` as
soon as `g_raised.set()` is called. The background thread may not yet reach
the `leave_g.wait()` line.
2024-03-29 15:33:06 -04:00
Malcolm Smith
872c0714fc
gh-71052: Change Android's sys.platform from "linux" to "android"
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
2024-03-11 19:25:39 +00:00
Eric Snow
e80abd57a8
gh-76785: Update test.support.interpreters to Align With PEP 734 (gh-115566)
This brings the code under test.support.interpreters, and the corresponding extension modules, in line with recent updates to PEP 734.

(Note: PEP 734 has not been accepted at this time.  However, we are using an internal copy of the implementation in the test suite to exercise the existing subinterpreters feature.)
2024-02-28 16:08:08 -07:00
Sam Gross
587d480203
gh-112529: Remove PyGC_Head from object pre-header in free-threaded build (#114564)
* gh-112529: Remove PyGC_Head from object pre-header in free-threaded build

This avoids allocating space for PyGC_Head in the free-threaded build.
The GC implementation for free-threaded CPython does not use the
PyGC_Head structure.

 * The trashcan mechanism uses the `ob_tid` field instead of `_gc_prev`
   in the free-threaded build.
 * The GDB libpython.py file now determines the offset of the managed
   dict field based on whether the running process is a free-threaded
   build. Those are identified by the `ob_ref_local` field in PyObject.
 * Fixes `_PySys_GetSizeOf()` which incorrectly incorrectly included the
   size of `PyGC_Head` in the size of static `PyTypeObject`.
2024-02-01 12:29:19 -08:00
Eric Snow
86a77f4e1a
gh-76785: Fixes for test.support.interpreters (gh-112982)
This involves a number of changes for PEP 734.
2023-12-12 08:24:31 -07:00
Victor Stinner
c5fa8a54db
gh-112535: Add test on _Py_ThreadId() (#112709)
Add also test.support.Py_GIL_DISABLED constant.
2023-12-04 22:40:06 +00:00
Serhiy Storchaka
dee7beeb4f
bpo-34392: Add sys. _is_interned() (GH-8755) 2023-12-04 11:09:06 +02:00
William Wen
939fc6d6ea
gh-106922: Support multi-line error locations in traceback (attempt 2) (#112097) 2023-12-01 22:18:16 +00:00
Donghee Na
4fa376b005
gh-111863: Rename term Py_NOGIL to Py_GIL_DISABLED in sysconfig (gh-112307) 2023-11-22 10:32:43 +09:00
Hugo van Kemenade
3b3ec0d77f
gh-111863: Rename Py_NOGIL to Py_GIL_DISABLED (#111864)
Rename Py_NOGIL to Py_GIL_DISABLED
2023-11-20 15:52:00 +02:00
Serhiy Storchaka
26c0e5e03a
gh-108082: Remove _PyErr_WriteUnraisableMsg() (GH-111643)
Replace the remaining calls with PyErr_FormatUnraisable().
2023-11-03 09:45:53 +02:00
Pablo Galindo Salgado
90a1b2859f
gh-67224: Show source lines in tracebacks when using the -c option when running Python (#111200) 2023-10-26 15:17:28 +09:00
Filipe Laíns
2f59d418cf
GH-110796: fix intermittent test failure in test_current_exceptions 2023-10-13 06:26:27 +00:00
Pablo Galindo Salgado
e7331365b4
gh-110721: Use the traceback module for PyErr_Display() and fallback to the C implementation (#110702) 2023-10-12 14:52:14 +00:00
AN Long
44b1e4ea48
gh-108963: using random to generate unique string in sys.intern test (#109491) 2023-10-02 13:07:56 +02:00
Sam Gross
773614e03a
gh-109740: Use 't' in --disable-gil SOABI (#109922)
Shared libraries for CPython 3.13 are now marked with a 't' for
threading. For example, `binascii.cpython-313t-darwin.so`.
2023-09-27 15:24:12 +00:00
Antoine Pitrou
88a6137cdb
gh-109599: Add types.CapsuleType (#109600)
---------

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
2023-09-25 19:50:39 +02:00
Victor Stinner
a0773b89df
gh-108753: Enhance pystats (#108754)
Statistics gathering is now off by default. Use the "-X pystats"
command line option or set the new PYTHONSTATS environment variable
to 1 to turn statistics gathering on at Python startup.

Statistics are no longer dumped at exit if statistics gathering was
off or statistics have been cleared.

Changes:

* Add PYTHONSTATS environment variable.
* sys._stats_dump() now returns False if statistics are not dumped
  because they are all equal to zero.
* Add PyConfig._pystats member.
* Add tests on sys functions and on setting PyConfig._pystats to 1.
* Add Include/cpython/pystats.h and Include/internal/pycore_pystats.h
  header files.
* Rename '_py_stats' variable to '_Py_stats'.
* Exclude Include/cpython/pystats.h from the Py_LIMITED_API.
* Move pystats.h include from object.h to Python.h.
* Add _Py_StatsOn() and _Py_StatsOff() functions. Remove
  '_py_stats_struct' variable from the API: make it static in
  specialize.c.
* Document API in Include/pystats.h and Include/cpython/pystats.h.
* Complete pystats documentation in Doc/using/configure.rst.
* Don't write "all zeros" stats: if _stats_off() and _stats_clear()
  or _stats_dump() were called.
* _PyEval_Fini() now always call _Py_PrintSpecializationStats() which
  does nothing if stats are all zeros.

Co-authored-by: Michael Droettboom <mdboom@gmail.com>
2023-09-06 15:54:59 +00:00
Victor Stinner
8ff1142578
gh-108851: Fix tomllib recursion tests (#108853)
* Add get_recursion_available() and get_recursion_depth() functions
  to the test.support module.
* Change infinite_recursion() default max_depth from 75 to 100.
* Fix test_tomllib recursion tests for WASI buildbots: reduce the
  recursion limit and compute the maximum nested array/dict depending
  on the current available recursion limit.
* test.pythoninfo logs sys.getrecursionlimit().
* Enhance test_sys tests on sys.getrecursionlimit()
  and sys.setrecursionlimit().
2023-09-06 17:34:31 +02:00
Victor Stinner
676593859e
gh-106320: Remove private _PyErr_WriteUnraisableMsg() (#108863)
Move the private _PyErr_WriteUnraisableMsg() functions to the
internal C API (pycore_pyerrors.h).

Move write_unraisable_exc() from _testcapi to _testinternalcapi.
2023-09-05 01:54:55 +02:00
Victor Stinner
13a00078b8
gh-108634: Py_TRACE_REFS uses a hash table (#108663)
Python built with "configure --with-trace-refs" (tracing references)
is now ABI compatible with Python release build and debug build.
Moreover, it now also supports the Limited API.

Change Py_TRACE_REFS build:

* Remove _PyObject_EXTRA_INIT macro.
* The PyObject structure no longer has two extra members (_ob_prev
  and _ob_next).
* Use a hash table (_Py_hashtable_t) to trace references (all
  objects): PyInterpreterState.object_state.refchain.
* Py_TRACE_REFS build is now ABI compatible with release build and
  debug build.
* Limited C API extensions can now be built with Py_TRACE_REFS:
  xxlimited, xxlimited_35, _testclinic_limited.
* No longer rename PyModule_Create2() and PyModule_FromDefAndSpec2()
  functions to PyModule_Create2TraceRefs() and
  PyModule_FromDefAndSpec2TraceRefs().
* _Py_PrintReferenceAddresses() is now called before
  finalize_interp_delete() which deletes the refchain hash table.
* test_tracemalloc find_trace() now also filters by size to ignore
  the memory allocated by _PyRefchain_Trace().

Test changes for Py_TRACE_REFS:

* Add test.support.Py_TRACE_REFS constant.
* Add test_sys.test_getobjects() to test sys.getobjects() function.
* test_exceptions skips test_recursion_normalizing_with_no_memory()
  and test_memory_error_in_PyErr_PrintEx() if Python is built with
  Py_TRACE_REFS.
* test_repl skips test_no_memory().
* test_capi skisp test_set_nomemory().
2023-08-31 18:33:34 +02:00
Victor Stinner
83e191ba76
test_sys: remove debug print() (#108642) 2023-08-29 16:04:07 +00:00
Eric Snow
2f9bb77764
gh-106931: Fix the WASM Buildbots (gh-107362)
Skip subinterpreter tests when not supported.
2023-07-27 21:46:02 +00:00
Eric Snow
b72947a8d2
gh-106931: Intern Statically Allocated Strings Globally (gh-107272)
We tried this before with a dict and for all interned strings.  That ran into problems due to interpreter isolation.  However, exclusively using a per-interpreter cache caused some inconsistency that can eliminate the benefit of interning.  Here we circle back to using a global cache, but only for statically allocated strings.  We also use a more-basic _Py_hashtable_t for that global cache instead of a dict.

Ideally we would only have the global cache, but the optional isolation of each interpreter's allocator means that a non-static string object must not outlive its interpreter.  Thus we would have to store a copy of each such interned string in the global cache, tied to the main interpreter.
2023-07-27 13:56:59 -06:00
Victor Stinner
307186704d
gh-106320: Remove private _PyMem API (#107187)
Move private _PyMem functions to the internal C API (pycore_pymem.h):

* _PyMem_GetCurrentAllocatorName()
* _PyMem_RawStrdup()
* _PyMem_RawWcsdup()
* _PyMem_Strdup()

No longer export these functions.

Move pymem_getallocatorsname() function from _testcapi to _testinternalcapi,
since the API moved to the internal C API.
2023-07-24 18:48:06 +00:00
Mark Shannon
04492cbc9a
GH-91095: Specialize calls to normal Python classes. (GH-99331) 2023-06-22 09:48:19 +01:00
Jelle Zijlstra
24d8b88420
gh-103763: Implement PEP 695 (#103764)
This implements PEP 695, Type Parameter Syntax. It adds support for:

- Generic functions (def func[T](): ...)
- Generic classes (class X[T](): ...)
- Type aliases (type X = ...)
- New scoping when the new syntax is used within a class body
- Compiler and interpreter changes to support the new syntax and scoping rules 

Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Co-authored-by: Eric Traut <eric@traut.com>
Co-authored-by: Larry Hastings <larry@hastings.org>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
2023-05-15 20:36:23 -07:00
Mark Shannon
45f5aa8fc7
GH-103082: Filter LINE events in VM, to simplify tool implementation. (GH-104387)
When monitoring LINE events, instrument all instructions that can have a predecessor on a different line.
Then check that the a new line has been hit in the instrumentation code.
This brings the behavior closer to that of 3.11, simplifying implementation and porting of tools.
2023-05-12 12:21:20 +01:00
Eddie Elizondo
ea2c001650
gh-84436: Implement Immortal Objects (gh-19474)
This is the implementation of PEP683

Motivation:

The PR introduces the ability to immortalize instances in CPython which bypasses reference counting. Tagging objects as immortal allows up to skip certain operations when we know that the object will be around for the entire execution of the runtime.

Note that this by itself will bring a performance regression to the runtime due to the extra reference count checks. However, this brings the ability of having truly immutable objects that are useful in other contexts such as immutable data sharing between sub-interpreters.
2023-04-22 13:39:37 -06:00
Mark Shannon
411b169281
GH-103082: Implementation of PEP 669: Low Impact Monitoring for CPython (GH-103083)
* The majority of the monitoring code is in instrumentation.c

* The new instrumentation bytecodes are in bytecodes.c

* legacy_tracing.c adapts the new API to the old sys.setrace and sys.setprofile APIs
2023-04-12 12:04:55 +01:00
Irit Katriel
78b763f630
gh-103176: sys._current_exceptions() returns mapping to exception instances instead of exc_info tuples (#103177) 2023-04-11 09:38:37 +01:00
Brandt Bucher
121057aa36
GH-89987: Shrink the BINARY_SUBSCR caches (GH-103022) 2023-03-29 15:53:30 -07:00
Irit Katriel
b3cc11a08e
gh-102799: remove unnecessary calls to sys.exc_info() in tests (#102800) 2023-03-18 07:19:38 +00:00
Jacob Bower
0c857865e4
Fix deadlock on shutdown if test_current_{exception,frames} fails (#102019)
* Don't deadlock on shutdown if test_current_{exception,frames} fails

These tests spawn a thread that waits on a threading.Event. If the test fails any of its assertions, the Event won't be signaled and the thread will wait indefinitely, causing a deadlock when threading._shutdown() tries to join all outstanding threads.

Co-authored-by: Brett Simmers <bsimmers@meta.com>

* Add a news entry

* Fix whitespace

---------

Co-authored-by: Brett Simmers <bsimmers@meta.com>
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
2023-02-23 14:57:06 -08:00
Mark Shannon
22b8d77b98
GH-100719: Remove redundant gi_code field from generator object. (GH-100749) 2023-02-23 10:19:01 +00:00