Commit Graph

437 Commits

Author SHA1 Message Date
neonene 646f16bdee
gh-124153: Implement `PyType_GetBaseByToken()` and `Py_tp_token` slot (GH-124163) 2024-09-18 09:18:19 +02:00
Ken Jin 3bfc9c831a
gh-120198: Stop the world when setting __class__ on free-threaded build (GH-120672) 2024-07-11 02:02:08 +08:00
Sam Gross 3af7263037
gh-117511: Make PyMutex public in the non-limited API (#117731) 2024-06-20 11:29:08 -04:00
Mark Shannon 00257c746c
GH-119462: Enforce invariants of type versioning (GH-120731)
* Remove uses of Py_TPFLAGS_VALID_VERSION_TAG
2024-06-19 17:38:45 +01:00
Victor Stinner 16f8e22e7c
gh-120600: Make Py_TYPE() opaque in limited C API 3.14 (#120601)
In the limited C API 3.14 and newer, Py_TYPE() is now implemented as
an opaque function call to hide implementation details.
2024-06-18 14:28:48 +00:00
Victor Stinner c2d5df5787
gh-83754: Use the Py_TYPE() macro (#120599)
Don't access directly PyObject.ob_type, but use the Py_TYPE() macro
instead.
2024-06-17 10:34:29 +02:00
Ken Jin 6f63dfff6f
gh-117657: Make PyType_HasFeature (exported version) atomic (#120484)
Make PyType_HasFeature (exported version) atomic
2024-06-15 22:39:22 +08:00
Ken Jin e16aed63f6
gh-117657: Make Py_TYPE and Py_SET_TYPE thread safe (GH-120165)
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Nadeshiko Manju <me@manjusaka.me>
2024-06-12 20:41:07 +08:00
Victor Stinner 891c1e36f4
gh-119853: Add Include/refcount.h file (#119854) 2024-05-31 16:49:26 +02:00
mpage a5eeb832c2
gh-117657: Fix race data race in `_Py_IsOwnedByCurrentThread()` (#118258) 2024-04-26 10:39:08 -04:00
mpage f14e9f9154
gh-117657: Fix data race in `_Py_IsImmortal` (#118261)
The load of `ob_ref_local races with stores. Using a relaxed load is
sufficient; stores to the field are relaxed.
2024-04-25 11:31:57 -04:00
Mark Shannon c053d52edd
GH-115776: Static object are immortal, so mark them as such. (GH-117673) 2024-04-16 12:51:41 +01:00
Mark Shannon c32dc47aca
GH-115776: Embed the values array into the object, for "normal" Python objects. (GH-116115) 2024-04-02 11:59:21 +01:00
Victor Stinner 507896d97d
gh-116936: Add PyType_GetModuleByDef() to the limited C API (#116937) 2024-03-25 16:32:20 +00:00
Victor Stinner 8bea6c411d
gh-115754: Add Py_GetConstant() function (#116883)
Add Py_GetConstant() and Py_GetConstantBorrowed() functions.

In the limited C API version 3.13, getting Py_None, Py_False,
Py_True, Py_Ellipsis and Py_NotImplemented singletons is now
implemented as function calls at the stable ABI level to hide
implementation details. Getting these constants still return borrowed
references.

Add _testlimitedcapi/object.c and test_capi/test_object.py to test
Py_GetConstant() and Py_GetConstantBorrowed() functions.
2024-03-21 16:07:00 +00:00
Victor Stinner a9c304cf02
gh-116869: Make C API compatible with ISO C90 (#116950)
Make the C API compatible with -Werror=declaration-after-statement
compiler flag again.
2024-03-18 20:16:58 +01:00
Victor Stinner c432df6d56
gh-111696, PEP 737: Add PyType_GetModuleName() function (#116824)
Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
2024-03-14 18:17:43 +00:00
Victor Stinner 19c3a2ff91
gh-111696, PEP 737: Add PyType_GetFullyQualifiedName() function (#116815)
Rewrite tests on type names in Python, they were written in C.
2024-03-14 16:19:36 +00:00
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
Donghee Na 7b9d406729
gh-112087: Make PyList_{Append,Size,GetSlice} to be thread-safe (gh-114651) 2024-02-01 08:58:08 +09:00
Sam Gross b52fc70d1a
gh-112529: Implement GC for free-threaded builds (#114262)
* gh-112529: Implement GC for free-threaded builds

This implements a mark and sweep GC for the free-threaded builds of
CPython. The implementation relies on mimalloc to find GC tracked
objects (i.e., "containers").
2024-01-25 10:27:36 -08:00
Donghee Na d00dbf5415
gh-112535: Implement fallback implementation of _Py_ThreadId() (gh-113185)
---------

Co-authored-by: Sam Gross <colesbury@gmail.com>
2023-12-18 16:54:49 +00:00
Furkan Onder f34e22c647
gh-112535: Update _Py_ThreadId() to support RISC-V (gh-113084)
Update _Py_ThreadId() to support RISC-V
2023-12-15 08:42:33 +09:00
Donghee Na c744dbe9ac
gh-112535: Update _Py_ThreadId() to support s390/s390x (gh-112751) 2023-12-08 23:28:07 +09:00
Donghee Na 5aa317e4ca
gh-112535: Add comment for ppc32/64 registers (gh-112746) 2023-12-05 19:44:19 +09:00
Donghee Na d824512059
gh-112535: Update _Py_ThreadId() to support PowerPC (gh-112624) 2023-12-05 18:03:32 +09:00
Victor Stinner a9073564ee
gh-110481: Fix typo in Py_SET_REFCNT() (#112595) 2023-12-01 15:54:40 +00:00
Victor Stinner 5f6ac2d88a
gh-110481: Fix Py_SET_REFCNT() integer overflow (#112174)
If Py_NOGIL is defined and Py_SET_REFCNT() is called with a reference
count larger than UINT32_MAX, make the object immortal.

Set _Py_IMMORTAL_REFCNT constant type to Py_ssize_t to fix the
following compiler warning:

Include/internal/pycore_global_objects_fini_generated.h:14:24:
warning: comparison of integers of different signs: 'Py_ssize_t'
(aka 'long') and 'unsigned int' [-Wsign-compare]

    if (Py_REFCNT(obj) < _Py_IMMORTAL_REFCNT) {
        ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~
2023-12-01 15:50:16 +01:00
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
Victor Stinner 58469244be
gh-112026: Restore removed private C API (#112115)
Restore removed private C API functions, macros and structures which
have no simple replacement for now:

* _PyDict_GetItem_KnownHash()
* _PyDict_NewPresized()
* _PyHASH_BITS
* _PyHASH_IMAG
* _PyHASH_INF
* _PyHASH_MODULUS
* _PyHASH_MULTIPLIER
* _PyLong_Copy()
* _PyLong_FromDigits()
* _PyLong_New()
* _PyLong_Sign()
* _PyObject_CallMethodId()
* _PyObject_CallMethodNoArgs()
* _PyObject_CallMethodOneArg()
* _PyObject_CallOneArg()
* _PyObject_EXTRA_INIT
* _PyObject_FastCallDict()
* _PyObject_GetAttrId()
* _PyObject_Vectorcall()
* _PyObject_VectorcallMethod()
* _PyStack_AsDict()
* _PyThread_CurrentFrames()
* _PyUnicodeWriter structure
* _PyUnicodeWriter_Dealloc()
* _PyUnicodeWriter_Finish()
* _PyUnicodeWriter_Init()
* _PyUnicodeWriter_Prepare()
* _PyUnicodeWriter_PrepareKind()
* _PyUnicodeWriter_WriteASCIIString()
* _PyUnicodeWriter_WriteChar()
* _PyUnicodeWriter_WriteLatin1String()
* _PyUnicodeWriter_WriteStr()
* _PyUnicodeWriter_WriteSubstring()
* _PyUnicode_AsString()
* _PyUnicode_FromId()
* _PyVectorcall_Function()
* _Py_HashDouble()
* _Py_HashPointer()
* _Py_IDENTIFIER()
* _Py_c_abs()
* _Py_c_diff()
* _Py_c_neg()
* _Py_c_pow()
* _Py_c_prod()
* _Py_c_quot()
* _Py_c_sum()
* _Py_static_string()
* _Py_static_string_init()
2023-11-15 16:38:31 +00:00
Sam Gross 31c90d5838
gh-111569: Implement Python critical section API (gh-111571)
Critical sections are helpers to replace the global interpreter lock
with finer grained locking.  They provide similar guarantees to the GIL
and avoid the deadlock risk that plain locking involves.  Critical
sections are implicitly ended whenever the GIL would be released.  They
are resumed when the GIL would be acquired.  Nested critical sections
behave as if the sections were interleaved.
2023-11-08 15:39:29 -07:00
Victor Stinner 20cfab903d
gh-111506: Implement Py_SET_REFCNT() as opaque function in limited C API (#111508)
In the limited C API version 3.13, Py_SET_REFCNT() function is now
implemented as an opaque function call.

Add _Py_SetRefcnt() to the stable ABI.
2023-11-03 18:18:57 +01:00
Donghee Na 55df2deb1a
gh-110481: Fix _Py_ThreadId for non-free-threaded mode (gh-111503) 2023-10-31 02:16:18 +09:00
Sam Gross 6dfb8fe023
gh-110481: Implement biased reference counting (gh-110764) 2023-10-30 16:06:09 +00:00
Victor Stinner 0bb0d88e2d
gh-109496: Detect Py_DECREF() after dealloc in debug mode (#109539)
On a Python built in debug mode, Py_DECREF() now calls
_Py_NegativeRefcount() if the object is a dangling pointer to
deallocated memory: memory filled with 0xDD "dead byte" by the debug
hook on memory allocators. The fix is to check the reference count
*before* checking for _Py_IsImmortal().

Add test_decref_freed_object() to test_capi.test_misc.
2023-09-18 14:59:09 +00:00
Serhiy Storchaka add16f1a5e
gh-108511: Add C API functions which do not silently ignore errors (GH-109025)
Add the following functions:

* PyObject_HasAttrWithError()
* PyObject_HasAttrStringWithError()
* PyMapping_HasKeyWithError()
* PyMapping_HasKeyStringWithError()
2023-09-17 14:23:31 +03:00
Victor Stinner 45b9e6a61f
gh-108765: Move standard includes to Python.h (#108769)
* Move <ctype.h>, <limits.h> and <stdarg.h> standard includes to
  Python.h.
* Move "pystats.h" include from object.h to Python.h.
* Remove redundant "pymem.h" include in objimpl.h and "pyport.h"
  include in pymem.h; Python.h already includes them earlier.
* Remove redundant <wchar.h> include in unicodeobject.h; Python.h
  already includes it.
* Move _SGI_MP_SOURCE define from Python.h to pyport.h.
* pycore_condvar.h includes explicitly <unistd.h> for the
  _POSIX_THREADS macro.
2023-09-01 21:03:20 +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 b6de2850f2
gh-106320: Remove private _PyObject_GetState() (#108606)
Move the private _PyObject_GetState() function to the internal C API
(pycore_object.h).
2023-08-29 03:38:51 +00:00
brandonardenwalli f6099871fa
gh-107955 Remove old comment about increasing the reference count in usage of Py_None (#107993) 2023-08-16 09:14:14 +00:00
Victor Stinner 1c8fe9bdb6
gh-105059: Fix MSCV compiler warning on PyObject union (#107239)
Use pragma to ignore the MSCV compiler warning on the PyObject
nameless union.
2023-07-25 16:45:38 +02:00
Victor Stinner 6261585d63
gh-105059: Use GCC/clang extension for PyObject union (#107232)
Anonymous union is new in C11. To prevent compiler warning
when using -pedantic compiler option, use Clang and GCC
extension on C99 and older.
2023-07-25 12:27:48 +00:00
Victor Stinner 8ebc9fc321
gh-102304: Rename _Py_IncRefTotal_DO_NOT_USE_THIS() (#107193)
* Rename _Py_IncRefTotal_DO_NOT_USE_THIS() to _Py_INCREF_IncRefTotal()
* Rename _Py_DecRefTotal_DO_NOT_USE_THIS() to _Py_DECREF_DecRefTotal()
* Remove temporary _Py_INC_REFTOTAL() and _Py_DEC_REFTOTAL() macros
2023-07-24 19:47:50 +00:00
Serhiy Storchaka 579aa89e68
gh-106521: Add PyObject_GetOptionalAttr() function (GH-106522)
It is a new name of former _PyObject_LookupAttr().

Add also PyObject_GetOptionalAttrString().
2023-07-11 22:13:27 +03:00
Victor Stinner 1f2921b72c
gh-106572: Convert PyObject_DelAttr() to a function (#106611)
* Convert PyObject_DelAttr() and PyObject_DelAttrString() macros to
  functions.
* Add PyObject_DelAttr() and PyObject_DelAttrString() functions to
  the stable ABI.
* Replace PyObject_SetAttr(obj, name, NULL) with
  PyObject_DelAttr(obj, name).
2023-07-11 11:38:22 +02:00
Victor Stinner b542972dc1
gh-105387: Limited C API implements Py_INCREF() as func (#105388)
In the limited C API version 3.12, Py_INCREF() and Py_DECREF()
functions are now implemented as opaque function calls to hide
implementation details.
2023-06-14 02:33:00 +02:00
Victor Stinner 7ba0fd9f87
gh-102304: Fix Py_INCREF() for limited C API 3.9 (#105550)
When Python is built in debug mode (Py_REF_DEBUG macro), Py_INCREF()
and Py_DECREF() of the limited C API 3.9 (and older) now call
Py_IncRef() and Py_DecRef(), since _Py_IncRef() and _Py_DecRef() were
added to Python 3.10.
2023-06-09 09:30:41 +00:00
Victor Stinner 92022d8416
gh-102304: Fix Py_INCREF() stable ABI in debug mode (#104763)
When Python is built in debug mode (if the Py_REF_DEBUG macro is
defined), the Py_INCREF() and Py_DECREF() function are now always
implemented as opaque functions to avoid leaking implementation
details like the "_Py_RefTotal" variable or the
_Py_DecRefTotal_DO_NOT_USE_THIS() function.

* Remove _Py_IncRefTotal_DO_NOT_USE_THIS() and
  _Py_DecRefTotal_DO_NOT_USE_THIS() from the stable ABI.
* Remove _Py_NegativeRefcount() from limited C API.
2023-06-06 11:15:09 +02:00
Eric Snow 26e7bbf66e
gh-102304: Fix 2 New Stable ABI Functions (gh-104762) 2023-05-30 22:40:07 +00:00
Eric Snow 421cbf39fb
gh-102304: Temporarily Bump Py_LIMITED_API for 2 New Functions (#104766)
Quick and dirty.
2023-05-23 01:03:17 +02:00