Commit Graph

388 Commits

Author SHA1 Message Date
Serhiy Storchaka 6fd4c8ec77
gh-93741: Add private C API _PyImport_GetModuleAttrString() (GH-93742)
It combines PyImport_ImportModule() and PyObject_GetAttrString()
and saves 4-6 lines of code on every use.

Add also _PyImport_GetModuleAttr() which takes Python strings as arguments.
2022-06-14 07:15:26 +03:00
Eric Snow caa279d6fd
bpo-40514: Drop EXPERIMENTAL_ISOLATED_SUBINTERPRETERS (gh-93185)
This was added for bpo-40514 (gh-84694) to test out a per-interpreter GIL. However, it has since proven unnecessary to keep the experiment in the repo. (It can be done as a branch in a fork like normal.) So here we are removing:

* the configure option
* the macro
* the code enabled by the macro
2022-05-27 17:38:01 -06:00
Kumar Aditya cb04a09d2d
GH-93207: Remove HAVE_STDARG_PROTOTYPES configure check for stdarg.h (#93215) 2022-05-27 13:30:45 +02:00
Gregory P. Smith 6ed7c353b8
gh-88750: Remove the PYTHONTHREADDEBUG env var support. (#92509)
Remove the `PYTHONTHREADDEBUG` env var support.
Remove no-op dprintf() macro calls.
2022-05-09 16:03:46 -07:00
Christian Heimes d8f530fe32
bpo-46864: Suppress even more ob_shash deprecation warnings (GH-32176) 2022-03-30 08:35:15 +02:00
Victor Stinner 2217462bda
bpo-45786: Remove _PyFrame_Fini() and _PyFrame_DebugMallocStats() (GH-31874)
Remove private empty _PyFrame_Fini() and _PyFrame_DebugMallocStats()
functions.
2022-03-18 11:16:55 +01:00
Brandt Bucher f193631387
bpo-46841: Use inline caching for calls (GH-31709) 2022-03-07 11:45:00 -08:00
Eric Snow 08deed1af5
bpo-46753: Add the empty tuple to the _PyRuntimeState.global_objects. (gh-31345)
https://bugs.python.org/issue46753
2022-02-28 15:15:48 -07:00
Kumar Aditya 0d9b565e62
Propagate errors (however unlikely) from _Py_Deepfreeze_Init() (GH-31596) 2022-02-26 08:35:03 -08:00
Victor Stinner f780d9690f
bpo-45316: Move _PyArg_Fini() to internal C API (GH-31580)
Move the private unexported _PyArg_Fini() function to the internal C
API: to the pycore_pylifecycle.h header file.
2022-02-25 16:19:30 +01:00
Kumar Aditya 4dc746310b
bpo-46430: Fix memory leak in interned strings of deep-frozen modules (GH-31549) 2022-02-24 17:54:06 +01:00
Eric Snow 1f455361ec
bpo-46765: Replace Locally Cached Strings with Statically Initialized Objects (gh-31366)
https://bugs.python.org/issue46765
2022-02-22 17:23:51 -07:00
Eric Snow 81c72044a1
bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928)
We're no longer using _Py_IDENTIFIER() (or _Py_static_string()) in any core CPython code.  It is still used in a number of non-builtin stdlib modules.

The replacement is: PyUnicodeObject (not pointer) fields under _PyRuntimeState, statically initialized as part of _PyRuntime.  A new _Py_GET_GLOBAL_IDENTIFIER() macro facilitates lookup of the fields (along with _Py_GET_GLOBAL_STRING() for non-identifier strings).

https://bugs.python.org/issue46541#msg411799 explains the rationale for this change.

The core of the change is in:

* (new) Include/internal/pycore_global_strings.h - the declarations for the global strings, along with the macros
* Include/internal/pycore_runtime_init.h - added the static initializers for the global strings
* Include/internal/pycore_global_objects.h - where the struct in pycore_global_strings.h is hooked into _PyRuntimeState
* Tools/scripts/generate_global_objects.py - added generation of the global string declarations and static initializers

I've also added a --check flag to generate_global_objects.py (along with make check-global-objects) to check for unused global strings.  That check is added to the PR CI config.

The remainder of this change updates the core code to use _Py_GET_GLOBAL_IDENTIFIER() instead of _Py_IDENTIFIER() and the related _Py*Id functions (likewise for _Py_GET_GLOBAL_STRING() instead of _Py_static_string()).  This includes adding a few functions where there wasn't already an alternative to _Py*Id(), replacing the _Py_Identifier * parameter with PyObject *.

The following are not changed (yet):

* stop using _Py_IDENTIFIER() in the stdlib modules
* (maybe) get rid of _Py_IDENTIFIER(), etc. entirely -- this may not be doable as at least one package on PyPI using this (private) API
* (maybe) intern the strings during runtime init

https://bugs.python.org/issue46541
2022-02-08 13:39:07 -07:00
Victor Stinner 0575551f69
bpo-40170: Move _Py_GetAllocatedBlocks() to pycore_pymem.h (GH-30943)
Move _Py_GetAllocatedBlocks() and _PyObject_DebugMallocStats()
declarations to pycore_pymem.h. These functions are related to memory
allocators, not to the PyObject structure.
2022-01-27 21:23:22 +01:00
Kumar Aditya c7f810b34d
bpo-46476: Fix memory leak in code objects generated by deepfreeze (GH-30853)
Add _Py_Deepfreeze_Fini() and _PyStaticCode_Dealloc() functions.
2022-01-27 14:03:47 +01:00
Victor Stinner 12f4ac3bc8
bpo-46417: Clear symtable identifiers at exit (GH-30809)
Add _PySymtable_Fini() function, called by finalize_interp_clear().

Update test_cmd_line.test_showrefcount() to tolerate negative
reference count.
2022-01-23 00:06:56 +01:00
Victor Stinner 9c8e490b8f
bpo-46417: Clear _io module static objects at exit (GH-30807)
Add _PyIO_Fini() function, called by finalize_interp_clear(). It
clears static objects used by the _io extension module.
2022-01-22 23:22:20 +01:00
Victor Stinner 1626bf4ac7
bpo-46417: Clear Unicode static types at exit (GH-30806)
Add _PyUnicode_FiniTypes() function, called by
finalize_interp_types(). It clears these static types:

* EncodingMapType
* PyFieldNameIter_Type
* PyFormatterIter_Type

_PyStaticType_Dealloc() now does nothing if tp_subclasses
is not NULL.
2022-01-22 22:55:39 +01:00
Victor Stinner f1bcdeaca6
bpo-46417: Factorize _PyExc_InitTypes() code (GH-30804)
Add 'static_exceptions' list to factorize code between
_PyExc_InitTypes() and _PyBuiltins_AddExceptions().

_PyExc_InitTypes() does nothing if it's not the main interpreter.

Sort exceptions in Lib/test/exception_hierarchy.txt.
2022-01-22 21:48:56 +01:00
Victor Stinner 500c146387
bpo-46417: Clear more static types (GH-30796)
* Move PyContext static types into object.c static_types list.
* Rename PyContextTokenMissing_Type to _PyContextTokenMissing_Type
  and declare it in pycore_context.h.
* _PyHamtItems types are no long exported: replace PyAPI_DATA() with
  extern.
2022-01-22 18:55:48 +01:00
Victor Stinner 595225e86d
bpo-46417: Py_Finalize() clears static types (GH-30743)
Add _PyTypes_FiniTypes() best-effort function to clear static types:
don't deallocate a type if it still has subclasses.

remove_subclass() now sets tp_subclasses to NULL when removing the
last subclass.
2022-01-21 13:06:34 +01:00
Victor Stinner ea38e436fe
bpo-46417: Call _PyDebug_PrintTotalRefs() later (GH-30744)
"python -X showrefcount" now shows the total reference count after
clearing and destroyed the main Python interpreter. Previously, it
was shown before.

Py_FinalizeEx() now calls _PyDebug_PrintTotalRefs() after
finalize_interp_delete().
2022-01-21 13:05:26 +01:00
Victor Stinner e9e3eab0b8
bpo-46417: Finalize structseq types at exit (GH-30645)
Add _PyStructSequence_FiniType() and _PyStaticType_Dealloc()
functions to finalize a structseq static type in Py_Finalize().
Currrently, these functions do nothing if Python is built in release
mode.

Clear static types:

* AsyncGenHooksType: sys.set_asyncgen_hooks()
* FlagsType: sys.flags
* FloatInfoType: sys.float_info
* Hash_InfoType: sys.hash_info
* Int_InfoType: sys.int_info
* ThreadInfoType: sys.thread_info
* UnraisableHookArgsType: sys.unraisablehook
* VersionInfoType: sys.version
* WindowsVersionType: sys.getwindowsversion()
2022-01-21 01:42:25 +01:00
Eric Snow bc02eac9d2
bpo-46370: Move the static initializer for _PyRuntime to its own header file. (gh-30587)
https://bugs.python.org/issue46370
2022-01-13 15:54:36 -07:00
Eric Snow cf496d657a
bpo-45953: Statically allocate and initialize global bytes objects. (gh-30096)
The empty bytes object (b'') and the 256 one-character bytes objects were allocated at runtime init.  Now we statically allocate and initialize them.

https://bugs.python.org/issue45953
2022-01-11 09:37:24 -07:00
Dong-hee Na 9130a4d620
bpo-45919: Remove out of date comment (GH-30090) 2021-12-14 10:31:41 +09:00
Eric Snow 121f1f893a
bpo-45953: Statically initialize the small ints. (gh-30092)
The array of small PyLong objects has been statically declared. Here I also statically initialize them. Consequently they are no longer initialized dynamically during runtime init.

I've also moved them under a new sub-struct in _PyRuntimeState, in preparation for static allocation and initialization of other global objects.

https://bugs.python.org/issue45953
2021-12-13 18:04:05 -07:00
Dong-hee Na 191c431de7
bpo-45919: Use WinAPI GetFileType() in is_valid_fd() (GH-30082) 2021-12-13 21:57:59 +09:00
Eric Snow c8749b5783
bpo-46008: Make runtime-global object/type lifecycle functions and state consistent. (gh-29998)
This change is strictly renames and moving code around.  It helps in the following ways:

* ensures type-related init functions focus strictly on one of the three aspects (state, objects, types)
* passes in PyInterpreterState * to all those functions, simplifying work on moving types/objects/state to the interpreter
* consistent naming conventions help make what's going on more clear
* keeping API related to a type in the corresponding header file makes it more obvious where to look for it

https://bugs.python.org/issue46008
2021-12-09 12:59:26 -07:00
Eric Snow 758b74e71e
bpo-46008: Add _PyInterpreterState_Main(). (gh-29978)
PyInterpreterState_Main() is a plain function exposed in the public C-API. For internal usage we can take the more efficient approach in this PR.

https://bugs.python.org/issue46008
2021-12-07 18:56:06 -07:00
Eric Snow 313f92a57b
bpo-46008: Move thread-related interpreter state into a sub-struct. (gh-29971)
This parallels _PyRuntimeState.interpreters.  Doing this helps make it more clear what part of PyInterpreterState relates to its threads.

https://bugs.python.org/issue46008
2021-12-07 14:03:47 -07:00
Steve Dower 99fcf15052
bpo-45582: Port getpath[p].c to Python (GH-29041)
The getpath.py file is frozen at build time and executed as code over a namespace. It is never imported, nor is it meant to be importable or reusable. However, it should be easier to read, modify, and patch than the previous code.

This commit attempts to preserve every previously tested quirk, but these may be changed in the future to better align platforms.
2021-12-03 00:08:42 +00:00
Christian Heimes cb8f491f46
bpo-40280: Optimize ints and and startup on wasm (GH-29887) 2021-12-02 12:19:30 +01:00
Christian Heimes f87ea03502
bpo-45915: use fcntl(fd, F_GETFD) in is_valid_fd() (GH-29821) 2021-11-28 19:40:27 +01:00
Mark Shannon 4fc68560ea
Store actual ints, not pointers to them in the interpreter state. (GH-29274) 2021-10-28 17:35:43 +01:00
Mark Shannon f291404a80
bpo-45637: Store the frame pointer in the cframe (GH-29267)
* Rename 'frame' to 'current_frame'
2021-10-28 13:59:11 +01:00
Irit Katriel f30ad65dbf
bpo-45292: [PEP 654] add the ExceptionGroup and BaseExceptionGroup classes (GH-28569) 2021-10-23 00:13:46 +01:00
Victor Stinner aac29af678
bpo-45434: pyport.h no longer includes <stdlib.h> (GH-28914)
Include <stdlib.h> explicitly in C files.

Python.h includes <wchar.h>.
2021-10-13 19:25:53 +02:00
Victor Stinner 7cdc2a0f4b
pycore_pystate.h no longer redefines PyThreadState_GET() (GH-28921)
Redefining the PyThreadState_GET() macro in pycore_pystate.h is
useless since it doesn't affect files not including it. Either use
_PyThreadState_GET() directly, or don't use pycore_pystate.h internal
C API. For example, the _testcapi extension don't use the internal C
API, but use the public PyThreadState_Get() function instead.

Replace PyThreadState_Get() with _PyThreadState_GET(). The
_PyThreadState_GET() macro is more efficient than PyThreadState_Get()
and PyThreadState_GET() function calls which call fail with a fatal
Python error.

posixmodule.c and _ctypes extension now include <windows.h> before
pycore header files (like pycore_call.h).

_PyTraceback_Add() now uses _PyErr_Fetch()/_PyErr_Restore() instead
of PyErr_Fetch()/PyErr_Restore().

The _decimal and _xxsubinterpreters extensions are now built with the
Py_BUILD_CORE_MODULE macro defined to get access to the internal C
API.
2021-10-13 14:09:13 +02:00
Victor Stinner 79a3148099
bpo-45061: Detect refcount bug on empty tuple singleton (GH-28503)
Detect refcount bugs in C extensions when the empty tuple singleton
is destroyed by mistake.

Add the _Py_FatalRefcountErrorFunc() function.
2021-09-21 23:04:34 +02:00
Eric Snow a65c86889e
bpo-45020: Add -X frozen_modules=[on|off] to explicitly control use of frozen modules. (gh-28320)
Currently we freeze several modules into the runtime. For each of these modules it is essential to bootstrapping the runtime that they be frozen. Any other stdlib module that we later freeze into the runtime is not essential. We can just as well import from the .py file.  This PR lets users explicitly choose which should be used, with the new "-X frozen_modules=[on|off]" CLI flag. The default is "off" for now.

https://bugs.python.org/issue45020
2021-09-14 17:31:45 -06:00
Dong-hee Na c2c857b40f
bpo-44895: Introduce PYTHONDUMPREFSFILE variable for refcount dumping (GH-27767) 2021-08-18 00:52:50 +09:00
Victor Stinner 4d77691172
bpo-44584: Deprecate PYTHONTHREADDEBUG env var (GH-27065)
The threading debug (PYTHONTHREADDEBUG environment variable) is
deprecated in Python 3.10 and will be removed in Python 3.12. This
feature requires a debug build of Python.
2021-08-06 13:11:12 +02:00
Max Bélanger 35002aa8f6
bpo-32280: Store _PyRuntime in a named section (GH-4802)
This commit stores the _PyRuntime structure in a section of the same name. This allows a debugging or crash reporting tool to quickly locate this structure at runtime without requiring the symbol table.

Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
2021-06-04 00:37:29 +01:00
Victor Stinner 77d668b122
bpo-43680: _pyio.open() becomes a static method (GH-25354)
The Python _pyio.open() function becomes a static method to behave as
io.open() built-in function: don't become a bound method when stored
as a class variable. It becomes possible since static methods are now
callable in Python 3.10. Moreover, _pyio.OpenWrapper becomes a simple
alias to _pyio.open.

init_set_builtins_open() now sets builtins.open to io.open, rather
than setting it to io.OpenWrapper, since OpenWrapper is now an alias
to open in the io and _pyio modules.
2021-04-12 10:44:53 +02:00
Victor Stinner 3d55aa9e73
bpo-42923: Fix _Py_DumpExtensionModules() for NULL sysdict (GH-25262)
Fix Py_FatalError() is called before interp->sysdict is set.
2021-04-07 23:12:45 +02:00
Victor Stinner 442ad74fc2
bpo-43687: Py_Initialize() creates singletons earlier (GH-25147)
Reorganize pycore_interp_init() to initialize singletons before the
the first PyType_Ready() call. Fix an issue when Python is configured
using --without-doc-strings.
2021-04-02 15:28:13 +02:00
Victor Stinner 94faa0724f
bpo-43244: Remove ast.h, asdl.h, Python-ast.h headers (GH-24933)
These functions were undocumented and excluded from the limited C
API.

Most names defined by these header files were not prefixed by "Py"
and so could create names conflicts. For example, Python-ast.h
defined a "Yield" macro which was conflict with the "Yield" name used
by the Windows <winbase.h> header.

Use the Python ast module instead.

* Move Include/asdl.h to Include/internal/pycore_asdl.h.
* Move Include/Python-ast.h to Include/internal/pycore_ast.h.
* Remove ast.h header file.
* pycore_symtable.h no longer includes Python-ast.h.
2021-03-23 20:47:40 +01:00
Victor Stinner 87f649a409
bpo-43311: Create GIL autoTSSkey ealier (GH-24819)
At Python startup, call _PyGILState_Init() before
PyInterpreterState_New() which calls _PyThreadState_GET(). When
Python is built using --with-experimental-isolated-subinterpreters,
_PyThreadState_GET() uses autoTSSkey.
2021-03-10 20:00:46 +01:00
Gregory P. Smith 02ac6f41e5
bpo-43390: Set SA_ONSTACK in PyOS_setsig (GH-24730)
This is friendlier to other in-process code that an extension module or
embedding use could pull in such as CGo where tiny stacks are the norm
and sigaltstack() has been used to provide for signal handlers.

Without this, signals received by a process using tiny stacks may lead
to stack overflow crashes.
2021-03-04 21:49:30 -08:00