Add a fast-path for UTF-8 encoding in PyUnicode_EncodeFSDefault()
and PyUnicode_DecodeFSDefaultAndSize().
Add _PyUnicode_FiniEncodings() helper function for _PyUnicode_Fini().
In the limited C API, PyObject_INIT() and PyObject_INIT_VAR() are now
defined as aliases to PyObject_Init() and PyObject_InitVar() to make
their implementation opaque. It avoids to leak implementation details
in the limited C API.
Exclude the following functions from the limited C API, move them
from object.h to cpython/object.h:
* _Py_NewReference()
* _Py_ForgetReference()
* _PyTraceMalloc_NewReference()
* _Py_GetRefTotal()
The macro is defined after Py_DECREF() and so is no longer used by
Py_DECREF().
Moving _Py_Dealloc() macro back from cpython/object.h to object.h
would require to move a lot of definitions as well: PyTypeObject and
many related types used by PyTypeObject.
Keep _Py_Dealloc() as an opaque function call to avoid leaking
implementation details in the limited C API (object.h): remove
_Py_Dealloc() macro from cpython/object.h.
_Py_NewReference() becomes a regular opaque function, rather than a
static inline function in the C API (object.h), to better hide
implementation details.
Move _Py_tracemalloc_config from public pymem.h to internal
pycore_pymem.h header.
Make _Py_AddToAllObjects() private.
Restore PyObject_IsInstance() comment explaining why only tuples of
types are accepted, but not general sequence. Comment written by
Guido van Rossum in commit 03290ecbf1
which implements isinstance(x, (A, B, ...)). The comment was lost in
a PyObject_IsInstance() optimization:
commit ec569b7947.
Cleanup also the code. recursive_isinstance() is no longer recursive,
so rename it to object_isinstance(), whereas object_isinstance() is
recursive and so rename it to object_recursive_isinstance().
* Remove _Py_INC_REFTOTAL and _Py_DEC_REFTOTAL macros: modify
directly _Py_RefTotal.
* _Py_ForgetReference() is no longer defined if the Py_TRACE_REFS
macro is not defined.
* Remove _Py_NewReference() implementation from object.c:
unify the two implementations in object.h inline function.
* Fix Py_TRACE_REFS build: _Py_INC_TPALLOCS() macro has been removed.
Replace Py_FatalError() calls with _PyErr_WriteUnraisableMsg(),
_PyObject_ASSERT_FAILED_MSG() or Py_UNREACHABLE()
in unicode_dealloc() and unicode_release_interned().
Rename init_slotdefs() to _PyTypes_InitSlotDefs() and add a return
value of type PyStatus. The function is now called exactly once from
_PyTypes_Init(). Replace calls to init_slotdefs() with an assertion
checking that slotdefs is initialized.
Replace Py_FatalError() with _PyObject_ASSERT_FAILED_MSG() in
object.c and typeobject.c to also dump the involved Python object on
a fatal error. It should ease debug when such fatal error occurs.
If the double linked list is inconsistent, _Py_ForgetReference() no
longer dumps previous and next objects in the fatal error, it now
only dumps the current object. It ensures that the error message
is displayed even if dumping the object does crash Python.
Enhance _Py_ForgetReference() error messages;
_PyObject_ASSERT_FAILED_MSG() logs the "_Py_ForgetReference" function
name.
Improve multi-threaded performance by dropping the GIL in the fast path
of bytes.join. To avoid increasing overhead for small joins, it is only
done if the output size exceeds a threshold.
intern_strings() now raises a SystemError, rather than calling
Py_FatalError().
intern_string_constants() now reports exceptions to the caller,
rather than ignoring silently exceptions.
If the export count is negative, _memory_release() now raises a
SystemError and returns -1, rather than calling Py_FatalError()
which aborts the process.
If PyModule_Create2() is called when the Python import machinery is
not initialized, it now raises a SystemError and returns NULL,
instead of calling Py_FatalError() which aborts the process.
The caller must be prepared to handle NULL anyway.
Replace int with intptr_t to fix the warning:
objects\frameobject.c(341): warning C4244: 'initializing':
conversion from '__int64' to 'int', possible loss of data
The public API symbols being removed are:
_PyBytes_InsertThousandsGroupingLocale, _PyBytes_InsertThousandsGrouping, _Py_InitializeFromArgs, _Py_InitializeFromWideArgs, _PyFloat_Repr, _PyFloat_Digits,
_PyFloat_DigitsInit, PyFrame_ExtendStack, _PyAIterWrapper_Type, PyNullImporter_Type, PyCmpWrapper_Type, PySortWrapper_Type, PyNoArgsFunction.
Each Python subinterpreter now has its own "small integer
singletons": numbers in [-5; 257] range.
It is no longer possible to change the number of small integers at
build time by overriding NSMALLNEGINTS and NSMALLPOSINTS macros:
macros should now be modified manually in pycore_pystate.h header
file.
For now, continue to share _PyLong_Zero and _PyLong_One singletons
between all subinterpreters.
Victor Stinner
Stefan Pochmann
Inada Naoki
Mark Dickinson
Hai Shi
Dong-hee Na
Bruce Merry
Andrew Svetlov
Pablo Galindo
Niklas Fiekas
Anthony Sottile
Zackery Spytz
Batuhan Taşkaya
Sergey Fedoseev
Steve Dower