Commit Graph

354 Commits

Author SHA1 Message Date
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
Victor Stinner bcb094b41f
bpo-43268: Pass interp rather than tstate to internal functions (GH-24580)
Pass the current interpreter (interp) rather than the current Python
thread state (tstate) to internal functions which only use the
interpreter.

Modified functions:

* _PyXXX_Fini() and _PyXXX_ClearFreeList() functions
* _PyEval_SignalAsyncExc(), make_pending_calls()
* _PySys_GetObject(), sys_set_object(), sys_set_object_id(), sys_set_object_str()
* should_audit(), set_flags_from_config(), make_flags()
* _PyAtExit_Call()
* init_stdio_encoding()
* etc.
2021-02-19 15:10:45 +01:00
Victor Stinner 101bf69ff1
bpo-43268: _Py_IsMainInterpreter() now expects interp (GH-24577)
The _Py_IsMainInterpreter() function now expects interp rather than
tstate.
2021-02-19 13:33:31 +01:00
Victor Stinner 9852cb3811
bpo-42955: Rename module_names to sys.stdlib_module_names (GH-24332)
* Rename _Py_module_names to _Py_stdlib_module_names.
* Rename Python/module_names.h to Python/stdlib_module_names.h.
2021-01-25 23:12:50 +01:00
Victor Stinner db584bdad3
bpo-42955: Add sys.modules_names (GH-24238)
Add sys.module_names, containing the list of the standard library
module names.
2021-01-25 13:24:42 +01:00
Victor Stinner 66f77caca3
bpo-42923: _Py_DumpExtensionModules() ignores stdlib ext (GH-24254) 2021-01-19 23:35:27 +01:00
Victor Stinner 250035d134
bpo-42923: Dump extension modules on fatal error (GH-24207)
The Py_FatalError() function and the faulthandler module now dump the
list of extension modules on a fatal error.

Add _Py_DumpExtensionModules() and _PyModule_IsExtension() internal
functions.
2021-01-18 20:47:13 +01:00
Victor Stinner 314b8787e0
bpo-42923: Py_FatalError() avoids fprintf() (GH-24242)
* Replace buffered fprintf() with unbuffered _Py_write_noraise()
  in Py_FatalError().
* _Py_DumpHexadecimal() now accepts uintptr_t.
2021-01-18 18:34:56 +01:00
Victor Stinner f4507231e3
bpo-42745: finalize_interp_types() calls _PyType_Fini() (GH-23953)
Call _PyType_Fini() in subinterpreters.

Fix reference leaks in subinterpreters.
2020-12-26 20:26:08 +01:00
Victor Stinner ea251806b8
bpo-40521: Per-interpreter interned strings (GH-20085)
Make the Unicode dictionary of interned strings compatible with
subinterpreters.

Remove the INTERN_NAME_STRINGS macro in typeobject.c: names are
always now interned (even if EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
macro is defined).

_PyUnicode_ClearInterned() now uses PyDict_Next() to no longer
allocate memory, to ensure that the interned dictionary is cleared.
2020-12-26 02:58:33 +01:00
Victor Stinner 4101018488
bpo-42745: Make the type cache per-interpreter (GH-23947)
Make the type attribute lookup cache per-interpreter.

Add private _PyType_InitCache() function, called by PyInterpreterState_New().

Continue to share next_version_tag between interpreters, since static
types are still shared by interpreters.

Remove MCACHE macro: the cache is no longer disabled if the
EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined.
2020-12-26 01:45:43 +01:00
Victor Stinner b8fa135908
bpo-42639: Move atexit state to PyInterpreterState (GH-23763)
* Add _PyAtExit_Call() function and remove pyexitfunc and
  pyexitmodule members of PyInterpreterState. The function
  logs atexit callback errors using _PyErr_WriteUnraisableMsg().
* Add _PyAtExit_Init() and _PyAtExit_Fini() functions.
* Remove traverse, clear and free functions of the atexit module.

Co-authored-by: Dong-hee Na <donghee.na@python.org>
2020-12-15 14:34:19 +01:00
Victor Stinner 357704c9f2
bpo-42639: atexit now logs callbacks exceptions (GH-23771)
At Python exit, if a callback registered with atexit.register()
fails, its exception is now logged. Previously, only some exceptions
were logged, and the last exception was always silently ignored.

Add _PyAtExit_Call() function and remove
PyInterpreterState.atexit_func member. call_py_exitfuncs() now calls
directly _PyAtExit_Call().

The atexit module must now always be built as a built-in module.
2020-12-14 23:07:54 +01:00
Victor Stinner 83d52044ae
bpo-42639: Cleanup atexitmodule.c (GH-23770)
* Rename "atexitmodule_state" to "struct atexit_state".
* Rename "modstate" to "state".
* Rename "self" parameter to "module".
* test_atexit uses textwrap.dedent().
* Remove _Py_PyAtExit() function: inline it into atexit_exec().
* PyInterpreterState: rename pyexitfunc to atexit_func, rename
  pyexitmodule to atexit_module.
2020-12-14 22:40:40 +01:00
Victor Stinner a82f63f5af
bpo-32381: Add _PyRun_AnyFileObject() (GH-23723)
pymain_run_file() no longer encodes the filename: pass the filename
as an object to the new _PyRun_AnyFileObject() function.

Add new private functions:

* _PyRun_AnyFileObject()
* _PyRun_InteractiveLoopObject()
* _Py_FdIsInteractive()
2020-12-09 22:37:27 +01:00
Hai Shi 0f91f586ae
bpo-42599: Remove useless PyModule_GetWarningsModule() (GH-23691)
Removed PyModule_GetWarningsModule() which is useless due to 
the _warnings module was converted to a builtin module in 2.6.
2020-12-08 15:42:42 +01:00
Victor Stinner 6223071421
bpo-1635741: Convert _imp to multi-phase init (GH-23378)
Convert the _imp extension module to the multi-phase initialization
API (PEP 489).

* Add _PyImport_BootstrapImp() which fix a bootstrap issue: import
  the _imp module before importlib is initialized.
* Add create_builtin() sub-function, used by _imp_create_builtin().
* Initialize PyInterpreterState.import_func earlier, in
  pycore_init_builtins().
* Remove references to _PyImport_Cleanup(). This function has been
  renamed to finalize_modules() and moved to pylifecycle.c.
2020-11-18 23:18:29 +01:00
Christian Heimes 07f2adedf0
bpo-40998: Address compiler warnings found by ubsan (GH-20929)
Signed-off-by: Christian Heimes <christian@python.org>

Automerge-Triggered-By: GH:tiran
2020-11-18 07:38:53 -08:00
Victor Stinner 29aa624047
bpo-41686: Move _Py_RestoreSignals() to signalmodule.c (GH-23353) 2020-11-17 22:55:30 +01:00
Victor Stinner 296a796951
bpo-41713: Remove PyOS_InitInterrupts() function (GH-23342)
Remove the undocumented PyOS_InitInterrupts() C function.

* Rename PyOS_InitInterrupts() to _PySignal_Init(). It now installs
  other signal handlers, not only SIGINT.
* Rename PyOS_FiniInterrupts() to _PySignal_Fini()
2020-11-17 16:22:23 +01:00
Victor Stinner ae6cd7cfda
bpo-37205: time.time() cannot fail with fatal error (GH-23314)
time.time(), time.perf_counter() and time.monotonic() functions can
no longer fail with a Python fatal error, instead raise a regular
Python exception on failure.

Remove _PyTime_Init(): don't check system, monotonic and perf counter
clocks at startup anymore.

On error, _PyTime_GetSystemClock(), _PyTime_GetMonotonicClock() and
_PyTime_GetPerfCounter() now silently ignore the error and return 0.
They cannot fail with a Python fatal error anymore.

Add py_mach_timebase_info() and win_perf_counter_frequency()
sub-functions.
2020-11-16 16:08:05 +01:00
Victor Stinner ef75a625cd
bpo-42260: Initialize time and warnings earlier at startup (GH-23249)
* Call _PyTime_Init() and _PyWarnings_InitState() earlier during the
  Python initialization.
* Inline _PyImportHooks_Init() into _PySys_InitCore().
* The _warnings initialization function no longer call
  _PyWarnings_InitState() to prevent resetting filters_version to 0.
* _PyWarnings_InitState() now returns an int and no longer clear the
  state in case of error (it's done anyway at Python exit).
* Rework init_importlib(), fix refleaks on errors.
2020-11-12 15:14:13 +01:00
Victor Stinner ace3f9a0ce
bpo-42260: Fix _PyConfig_Read() if compute_path_config=0 (GH-23220)
Fix _PyConfig_Read() if compute_path_config=0: use values set by
Py_SetPath(), Py_SetPythonHome() and Py_SetProgramName(). Add
compute_path_config parameter to _PyConfig_InitPathConfig().

The following functions now return NULL if called before
Py_Initialize():

* Py_GetExecPrefix()
* Py_GetPath()
* Py_GetPrefix()
* Py_GetProgramFullPath()
* Py_GetProgramName()
* Py_GetPythonHome()

These functions no longer automatically computes the Python Path
Configuration. Moreover, Py_SetPath() no longer computes
program_full_path.
2020-11-10 21:10:22 +01:00
Victor Stinner 9e1b828265
bpo-42260: Compute the path config in the main init (GH-23211)
The path configuration is now computed in the "main" initialization.
The core initialization no longer computes it.

* Add _PyConfig_Read() function to read the configuration without
  computing the path configuration.
* pyinit_core() no longer computes the path configuration: it is now
  computed by init_interp_main().
* The path configuration output members of PyConfig are now optional:

  * executable
  * base_executable
  * prefix
  * base_prefix
  * exec_prefix
  * base_exec_prefix

* _PySys_UpdateConfig() now skips NULL strings in PyConfig.
* _testembed: Rename test_set_config() to test_init_set_config() for
  consistency with other tests.
2020-11-10 13:21:52 +01:00
Victor Stinner 048a35659a
bpo-42260: Add _PyInterpreterState_SetConfig() (GH-23158)
* Inline _PyInterpreterState_SetConfig(): replace it with
  _PyConfig_Copy().
* Add _PyErr_SetFromPyStatus()
* Add _PyInterpreterState_GetConfigCopy()
* Add a new _PyInterpreterState_SetConfig() function.
* Add an unit which gets, modifies, and sets the config.
2020-11-05 00:45:56 +01:00
Victor Stinner af1d64d9f7
bpo-42260: Main init modify sys.flags in-place (GH-23150)
When Py_Initialize() is called twice, the second call now updates
more sys attributes for the configuration, rather than only sys.argv.

* Rename _PySys_InitMain() to _PySys_UpdateConfig().
* _PySys_UpdateConfig() now modifies sys.flags in-place, instead of
  creating a new flags object.
* Remove old commented sys.flags flags (unbuffered and skip_first).
* Add private _PySys_GetObject() function.
* When Py_Initialize(), Py_InitializeFromConfig() and
2020-11-04 17:34:34 +01:00
Victor Stinner fd957c124c
bpo-41796: Call _PyAST_Fini() earlier to fix a leak (GH-23131)
Call _PyAST_Fini() on all interpreters, not only on the main
interpreter. Also, call it ealier to fix a reference leak.

Python types contain a reference to themselves in in their
PyTypeObject.tp_mro member. _PyAST_Fini() must called before the last
GC collection to destroy AST types.

_PyInterpreterState_Clear() now calls _PyAST_Fini(). It now also
calls _PyWarnings_Fini() on subinterpeters, not only on the main
interpreter.

Add an assertion in AST init_types() to ensure that the _ast module
is no longer used after _PyAST_Fini() has been called.
2020-11-03 18:07:15 +01:00
Victor Stinner eba5bf2f56
bpo-42208: Call GC collect earlier in PyInterpreterState_Clear() (GH-23044)
The last GC collection is now done before clearing builtins and sys
dictionaries. Add also assertions to ensure that gc.collect() is no
longer called after _PyGC_Fini().

Pass also the tstate to PyInterpreterState_Clear() to pass the
correct tstate to _PyGC_CollectNoFail() and _PyGC_Fini().
2020-10-30 22:51:02 +01:00
Victor Stinner dff1ad5090
bpo-42208: Move _PyImport_Cleanup() to pylifecycle.c (GH-23040)
Move _PyImport_Cleanup() to pylifecycle.c, rename it to
finalize_modules(), split it (200 lines) into many smaller
sub-functions and cleanup the code.
2020-10-30 18:03:28 +01:00
Victor Stinner 8b3414818f
bpo-42208: Pass tstate to _PyGC_CollectNoFail() (GH-23038)
Move private _PyGC_CollectNoFail() to the internal C API.

Remove the private _PyGC_CollectIfEnabled() which was just an alias
to the public PyGC_Collect() function since Python 3.8.

Rename functions:

* collect() => gc_collect_main()
* collect_with_callback() => gc_collect_with_callback()
* collect_generations() => gc_collect_generations()
2020-10-30 17:00:00 +01:00
Serhiy Storchaka fb5db7ec58
bpo-42006: Stop using PyDict_GetItem, PyDict_GetItemString and _PyDict_GetItemId. (GH-22648)
These functions are considered not safe because they suppress all internal errors
and can return wrong result.  PyDict_GetItemString and _PyDict_GetItemId can
also silence current exception in rare cases.

Remove no longer used _PyDict_GetItemId.
Add _PyDict_ContainsId and rename _PyDict_Contains into
_PyDict_Contains_KnownHash.
2020-10-26 08:43:39 +02:00
Victor Stinner e5fbe0cbd4
bpo-41631: _ast module uses again a global state (#21961)
Partially revert commit ac46eb4ad6662cf6d771b20d8963658b2186c48c:
"bpo-38113: Update the Python-ast.c generator to PEP384 (gh-15957)".

Using a module state per module instance is causing subtle practical
problems.

For example, the Mercurial project replaces the __import__() function
to implement lazy import, whereas Python expected that "import _ast"
always return a fully initialized _ast module.

Add _PyAST_Fini() to clear the state at exit.

The _ast module has no state (set _astmodule.m_size to 0). Remove
astmodule_traverse(), astmodule_clear() and astmodule_free()
functions.
2020-09-15 18:03:34 +02:00
Hai Shi 8aa163eea6
bpo-1635741: Explict GC collect after PyInterpreterState_Clear() (GH-21902)
Fix a reference cycle by triggering an explicit GC collection
after calling PyInterpreterState_Clear().
2020-08-17 22:36:19 +02:00
Konge daa0fe03a5
bpo-41162: Clear audit hooks later during finalization (GH-21222) 2020-07-03 22:06:46 +01:00
Victor Stinner 666ecfb095
bpo-1635741: Release Unicode interned strings at exit (GH-21269)
* PyUnicode_InternInPlace() now ensures that interned strings are
  ready.
* Add _PyUnicode_ClearInterned().
* Py_Finalize() now releases Unicode interned strings:
  call _PyUnicode_ClearInterned().
2020-07-02 01:19:57 +02:00