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* bpo-43760: Streamline dispatch sequence for machines without computed gotos. ↵Mark Shannon2021-04-081-61/+52
| | | | | | | | (GH-25244) * Do fetch and decode at end of opcode then jump directly to switch. Should allow compilers that don't support computed-gotos, specifically MSVC, to generate better code.
* bpo-43683: Handle generator entry in bytecode (GH-25138)Mark Shannon2021-04-061-0/+24
| | | | | | * Handle check for sending None to starting generator and coroutine into bytecode. * Document new bytecode and make it fail gracefully if mis-compiled.
* bpo-42128: __match_args__ can't be a list anymore (GH-25203)Brandt Bucher2021-04-061-8/+1
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* bpo-27129: Use instruction offsets, not byte offsets, in bytecode and ↵Mark Shannon2021-04-011-17/+12
| | | | | | | internally. (GH-25069) * Use instruction offset, rather than bytecode offset. Streamlines interpreter dispatch a bit, and removes most EXTENDED_ARGs for jumps. * Change some uses of PyCode_Addr2Line to PyFrame_GetLineNumber
* Move big block of macros out of function to improve readability. (GH-25020)Mark Shannon2021-03-251-38/+40
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* Only check evalbreaker after calls and on backwards egdes. Makes sure that ↵Mark Shannon2021-03-241-46/+37
| | | | __exit__ or __aexit__ is called in with statments in case of interrupt. (GH-18334)
* bpo-43541: Fix PyEval_EvalCodeEx() regression (GH-24918)Victor Stinner2021-03-181-4/+2
| | | | | | | | | | | * Remove an assertion which required CO_NEWLOCALS and CO_OPTIMIZED code flags. It is ok to call this function on a code with these flags set. * Fix reference counting on builtins: remove Py_DECREF(). Fix regression introduced in the commit 46496f9d12582bf11f4911ad0f23315d6f277907. Add also a comment to document that _PyEval_BuiltinsFromGlobals() returns a borrowed reference.
* Make tracing info (bounds, and previous instruction offset) a bit more ↵Mark Shannon2021-03-051-52/+72
| | | | robust. (GH-24726)
* bpo-43271: Re-enable ceval.c optimizations for Windows debug builds (GH-24739)db3l2021-03-041-0/+1
| | | | | | Partially reverts commit b74396c3167cc780f01309148db02709bc37b432 The optimizations are necessary to prevent the interpreter from crashing in a number of tests involving recursion.
* bpo-37146: Deactivate opcode cache only when using huntrleaks in the test ↵Pablo Galindo2021-02-281-10/+12
| | | | suite (GH-24643)
* bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917)Brandt Bucher2021-02-261-0/+382
| | | | | Co-authored-by: Guido van Rossum <guido@python.org> Co-authored-by: Talin <viridia@gmail.com> Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
* bpo-42093: Cleanup _PyDict_GetItemHint() (GH-24582)Victor Stinner2021-02-211-5/+16
| | | | | | * No longer save/restore the current exception. It is no longer used with an exception raised. * No longer clear the current exception on error: it's now up to the caller.
* bpo-42990: Functions inherit current builtins (GH-24564)Victor Stinner2021-02-201-12/+16
| | | | | | | | | | | | | | | | | | | | The types.FunctionType constructor now inherits the current builtins if the globals dictionary has no "__builtins__" key, rather than using {"None": None} as builtins: same behavior as eval() and exec() functions. Defining a function with "def function(...): ..." in Python is not affected, globals cannot be overriden with this syntax: it also inherits the current builtins. PyFrame_New(), PyEval_EvalCode(), PyEval_EvalCodeEx(), PyFunction_New() and PyFunction_NewWithQualName() now inherits the current builtins namespace if the globals dictionary has no "__builtins__" key. * Add _PyEval_GetBuiltins() function. * _PyEval_BuiltinsFromGlobals() now uses _PyEval_GetBuiltins() if builtins cannot be found in globals. * Add tstate parameter to _PyEval_BuiltinsFromGlobals().
* bpo-43268: Pass interp rather than tstate to internal functions (GH-24580)Victor Stinner2021-02-191-16/+15
| | | | | | | | | | | | | | | 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.
* bpo-43270: Remove private _PyErr_OCCURRED() macro (GH-24579)Victor Stinner2021-02-191-1/+1
| | | | | | | | Remove the private _PyErr_OCCURRED() macro: use the public PyErr_Occurred() function instead. CPython internals must use the internal _PyErr_Occurred(tstate) function instead: it is the most efficient way to check if an exception was raised.
* bpo-43268: _Py_IsMainInterpreter() now expects interp (GH-24577)Victor Stinner2021-02-191-2/+2
| | | | The _Py_IsMainInterpreter() function now expects interp rather than tstate.
* bpo-42990: Refactor _PyFrame_New_NoTrack() (GH-24566)Victor Stinner2021-02-181-3/+3
| | | | | | | | | | | | * Refactor _PyFrame_New_NoTrack() and PyFunction_NewWithQualName() code. * PyFrame_New() checks for _PyEval_BuiltinsFromGlobals() failure. * Fix a ref leak in _PyEval_BuiltinsFromGlobals() error path. * Complete PyFunction_GetModule() documentation: it returns a borrowed reference and it can return NULL. * Move _PyEval_BuiltinsFromGlobals() definition to the internal C API. * PyFunction_NewWithQualName() uses _Py_IDENTIFIER() API for the "__name__" string to make it compatible with subinterpreters.
* bpo-43152: Update assert statement to remove unused warning (GH-24473)Dong-hee Na2021-02-141-2/+1
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* bpo-42990: Further refactoring of PyEval_ functions. (GH-24368)Mark Shannon2021-02-011-123/+200
| | | | | | | | | | * Further refactoring of PyEval_EvalCode and friends. Break into make-frame, and eval-frame parts. * Simplify function vector call using new _PyEval_Vector. * Remove unused internal functions: _PyEval_EvalCodeWithName and _PyEval_EvalCode. * Don't use legacy function PyEval_EvalCodeEx.
* bpo-42927: Inline cache for attributes defined with '__slots__' (#24216)Guido van Rossum2021-01-301-64/+116
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* bpo-42990: Introduce 'frame constructor' struct to simplify API for ↵Mark Shannon2021-01-291-62/+68
| | | | | | | PyEval_CodeEval and friends (GH-24298) * Introduce 'frame constructor' to simplify API for frame creation * Embed struct using a macro to conform to PEP 7
* Update frame.f_lineno before any call to the (C) tracing function. (GH-24150)Mark Shannon2021-01-071-33/+54
| | | * Minimizes breakage of C extensions and ensures PyFrame_GetLineNumber is efficient.
* bpo-42823: Fix frame lineno when frame.f_trace is set (GH-24099)Mark Shannon2021-01-051-10/+11
| | | | | | | | | * Add test for frame.f_lineno with/without tracing. * Make sure that frame.f_lineno is correct regardless of whether frame.f_trace is set. * Update importlib * Add NEWS
* bpo-42246: Make sure that `f_lasti`, and thus `f_lineno`, is set correctly ↵Mark Shannon2020-12-171-1/+5
| | | | | | | | | after raising or reraising an exception (GH-23803) * Ensure that f_lasti is set correctly after an exception is raised to conform to PEP 626. * Update importlib * Add NEWS.
* bpo-42500: Fix recursion in or after except (GH-23568)Mark Shannon2020-12-021-9/+11
| | | * Use counter, rather boolean state when handling soft overflows.
* bpo-42202: Store func annotations as a tuple (GH-23316)Yurii Karabas2020-11-251-1/+1
| | | | | | | | | | | | | Reduce memory footprint and improve performance of loading modules having many func annotations. >>> sys.getsizeof({"a":"int","b":"int","return":"int"}) 232 >>> sys.getsizeof(("a","int","b","int","return","int")) 88 The tuple is converted into dict on the fly when `func.__annotations__` is accessed first. Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Inada Naoki <songofacandy@gmail.com>
* bpo-42296: On Windows, fix CTRL+C regression (GH-23257)Victor Stinner2020-11-131-5/+33
| | | | | | | | | | | On Windows, fix a regression in signal handling which prevented to interrupt a program using CTRL+C. The signal handler can be run in a thread different than the Python thread, in which case the test deciding if the thread can handle signals is wrong. On Windows, _PyEval_SignalReceived() now always sets eval_breaker to 1 since it cannot test _Py_ThreadCanHandleSignals(), and eval_frame_handle_pending() always calls _Py_ThreadCanHandleSignals() to recompute eval_breaker.
* bpo-42246: Partial implementation of PEP 626. (GH-23113)Mark Shannon2020-11-121-43/+30
| | | * Implement new line number table format, as defined in PEP 626.
* bpo-42266: Handle monkey-patching descriptors in LOAD_ATTR cache (GH-23157)Pablo Galindo2020-11-051-7/+1
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* bpo-42099: Fix reference to ob_type in unionobject.c and ceval (GH-22829)Neil Schemenauer2020-10-271-1/+1
| | | * Use Py_TYPE() rather than o->ob_type.
* bpo-42006: Stop using PyDict_GetItem, PyDict_GetItemString and ↵Serhiy Storchaka2020-10-261-2/+9
| | | | | | | | | | | _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.
* bpo-42093: Add opcode cache for LOAD_ATTR (GH-22803)Pablo Galindo2020-10-201-5/+216
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* bpo-41756: Add PyIter_Send function (#22443)Vladimir Matveev2020-10-101-14/+7
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* bpo-41936. Remove macros Py_ALLOW_RECURSION/Py_END_ALLOW_RECURSION (GH-22552)Serhiy Storchaka2020-10-051-3/+0
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* bpo-21955: Change my nickname in BINARY_ADD comment (GH-22481)Victor Stinner2020-10-011-1/+1
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* bpo-41670: Remove outdated predict macro invocation. (GH-22026)Mark Shannon2020-09-291-2/+0
| | | Remove PREDICTion of POP_BLOCK from FOR_ITER.
* bpo-40941: Fix stackdepth compiler warnings (GH-22377)Victor Stinner2020-09-231-4/+4
| | | | Explicitly cast a difference of two pointers to int: PyFrameObject.f_stackdepth is an int.
* bpo-41834: Remove _Py_CheckRecursionLimit variable (GH-22359)Victor Stinner2020-09-231-13/+3
| | | | | | | | | | Remove the global _Py_CheckRecursionLimit variable: it has been replaced by ceval.recursion_limit of the PyInterpreterState structure. There is no need to keep the variable for the stable ABI, since Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() were not usable in Python 3.8 and older: these macros accessed PyThreadState members, whereas the PyThreadState structure is opaque in the limited C API.
* bpo-41756: Introduce PyGen_Send C API (GH-22196)Vladimir Matveev2020-09-191-17/+41
| | | | | | | | | | | | | The new API allows to efficiently send values into native generators and coroutines avoiding use of StopIteration exceptions to signal returns. ceval loop now uses this method instead of the old "private" _PyGen_Send C API. This translates to 1.6x increased performance of 'await' calls in micro-benchmarks. Aside from CPython core improvements, this new API will also allow Cython to generate more efficient code, benefiting high-performance IO libraries like uvloop.
* bpo-40941: Unify implicit and explicit state in the frame and generator ↵Mark Shannon2020-07-171-16/+27
| | | | | | | objects into a single value. (GH-20803) * Merge gen and frame state variables into one. * Replace stack pointer with depth in PyFrameObject. Makes code easier to read and saves a word of memory.
* bpo-41078: Rename pycore_tupleobject.h to pycore_tuple.h (GH-21056)Victor Stinner2020-06-221-9/+9
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* bpo-40925: Remove unused stack macro SET_VALUE (GH-20783)Dong-hee Na2020-06-111-1/+0
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* bpo-39465: Use _PyInterpreterState_GET() (GH-20788)Victor Stinner2020-06-101-2/+2
| | | | | | | | | | | | Replace _PyThreadState_GET() with _PyInterpreterState_GET() in: * get_small_int() * gcmodule.c: add also get_gc_state() function * _PyTrash_deposit_object() * _PyTrash_destroy_chain() * warnings_get_state() * Py_GetRecursionLimit() Cleanup listnode.c: add 'parser' variable.
* bpo-40679: Fix _PyEval_EvalCode() crash if qualname is NULL (GH-20615)Victor Stinner2020-06-041-22/+36
| | | | | | | | | | If name is NULL, name is now set to co->co_name. If qualname is NULL, qualname is now set to name. qualname must not be NULL: it is used to build error messages. Cleanup also the code: declare variables where they are initialized. Rename "name" local variables to "varname" to avoid overriding "name" parameter.
* PyOS_AfterFork_Child() pass tstate to _PyEval_ReInitThreads() (GH-20598)Victor Stinner2020-06-021-3/+2
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* PyOS_AfterFork_Child() uses PyStatus (GH-20596)Victor Stinner2020-06-021-7/+6
| | | | | | | | PyOS_AfterFork_Child() helper functions now return a PyStatus: PyOS_AfterFork_Child() is now responsible to handle errors. * Move _PySignal_AfterFork() to the internal C API * Add #ifdef HAVE_FORK on _PyGILState_Reinit(), _PySignal_AfterFork() and _PyInterpreterState_DeleteExceptMain().
* bpo-40826: Add _Py_EnsureTstateNotNULL() macro (GH-20571)Victor Stinner2020-06-011-13/+12
| | | | Add _Py_EnsureTstateNotNULL(tstate) macro: call Py_FatalError() if tstate is NULL, the error message contains the current function name.
* bpo-40679: Use the function's qualname in certain TypeErrors (GH-20236)Dennis Sweeney2020-05-221-15/+16
| | | | Patch by Dennis Sweeney.
* Fix typo in code comment in main_loop label. (GH-20068)Chris Jerdonek2020-05-151-1/+1
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* bpo-38787: Add PyCFunction_CheckExact() macro for exact type checks (GH-20024)scoder2020-05-121-2/+2
| | | | | … now that we allow subtypes of PyCFunction. Also add PyCMethod_CheckExact() and PyCMethod_Check() for checks against the PyCMethod subtype.
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