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* bpo-39946: Remove _PyThreadState_GetFrame (GH-19094)Victor Stinner2020-03-201-12/+5
| | | | | Remove _PyRuntime.getframe hook and remove _PyThreadState_GetFrame macro which was an alias to _PyRuntime.getframe. They were only exposed by the internal C API. Remove also PyThreadFrameGetter type.
* bpo-40010: Optimize pending calls in multithreaded applications (GH-19091)Victor Stinner2020-03-201-4/+6
| | | | | | | | | | | | | | | If a thread different than the main thread schedules a pending call (Py_AddPendingCall()), the bytecode evaluation loop is no longer interrupted at each bytecode instruction to check for pending calls which cannot be executed. Only the main thread can execute pending calls. Previously, the bytecode evaluation loop was interrupted at each instruction until the main thread executes pending calls. * Add _Py_ThreadCanHandlePendingCalls() function. * SIGNAL_PENDING_CALLS() now only sets eval_breaker to 1 if the current thread can execute pending calls. Only the main thread can execute pending calls.
* bpo-40010: COMPUTE_EVAL_BREAKER() checks for subinterpreter (GH-19087)Victor Stinner2020-03-201-24/+3
| | | | | | | | | COMPUTE_EVAL_BREAKER() now also checks if the Python thread state belongs to the main interpreter. Don't break the evaluation loop if there are pending signals but the Python thread state it belongs to a subinterpeter. * Add _Py_IsMainThread() function. * Add _Py_ThreadCanHandleSignals() function.
* bpo-40010: Pass tstate to ceval GIL functions (GH-19077)Victor Stinner2020-03-201-124/+190
| | | | * Add eval_frame_handle_pending() helper function: cold code path. * Fix PyEval_ReleaseLock(): don't dereference tstate if it's NULL.
* bpo-40010: Optimize signal handling in multithreaded applications (GH-19067)Victor Stinner2020-03-191-4/+14
| | | | | | | | | | | | | | | If a thread different than the main thread gets a signal, the bytecode evaluation loop is no longer interrupted at each bytecode instruction to check for pending signals which cannot be handled. Only the main thread of the main interpreter can handle signals. Previously, the bytecode evaluation loop was interrupted at each instruction until the main thread handles signals. Changes: * COMPUTE_EVAL_BREAKER() and SIGNAL_PENDING_SIGNALS() no longer set eval_breaker to 1 if the current thread cannot handle signals. * take_gil() now always recomputes eval_breaker.
* bpo-39984: Move pending calls to PyInterpreterState (GH-19066)Victor Stinner2020-03-191-71/+88
| | | | | | | | | | | | | | | | | If Py_AddPendingCall() is called in a subinterpreter, the function is now scheduled to be called from the subinterpreter, rather than being called from the main interpreter. Each subinterpreter now has its own list of scheduled calls. * Move pending and eval_breaker fields from _PyRuntimeState.ceval to PyInterpreterState.ceval. * new_interpreter() now calls _PyEval_InitThreads() to create pending calls lock. * Fix Py_AddPendingCall() for subinterpreters. It now calls _PyThreadState_GET() which works in a subinterpreter if the caller holds the GIL, and only falls back on PyGILState_GetThisThreadState() if _PyThreadState_GET() returns NULL.
* bpo-39984: trip_signal() uses PyGILState_GetThisThreadState() (GH-19061)Victor Stinner2020-03-181-5/+9
| | | | | | | | | | | bpo-37127, bpo-39984: * trip_signal() and Py_AddPendingCall() now get the current Python thread state using PyGILState_GetThisThreadState() rather than _PyRuntimeState_GetThreadState() to be able to get it even if the GIL is released. * _PyEval_SignalReceived() now expects tstate rather than ceval. * Remove ceval parameter of _PyEval_AddPendingCall(): ceval is now get from tstate parameter.
* bpo-39984: Pass tstate to _PyEval_SignalAsyncExc() (GH-19049)Victor Stinner2020-03-181-4/+7
| | | | _PyEval_SignalAsyncExc() and _PyEval_FiniThreads() now expect tstate, instead of ceval.
* bpo-39984: _PyThreadState_DeleteCurrent() takes tstate (GH-19051)Victor Stinner2020-03-181-1/+9
| | | | | | | | | | * _PyThreadState_DeleteCurrent() now takes tstate rather than runtime. * Add ensure_tstate_not_null() helper to pystate.c. * Add _PyEval_ReleaseLock() function. * _PyThreadState_DeleteCurrent() now calls _PyEval_ReleaseLock(tstate) and frees PyThreadState memory after this call, not before. * PyGILState_Release(): rename "tcur" variable to "tstate".
* bpo-39984: Pass tstate to handle_signals() (GH-19050)Victor Stinner2020-03-181-11/+15
| | | | handle_signals() and make_pending_calls() now expect tstate rather than runtime.
* bpo-39984: Add PyInterpreterState.ceval (GH-19047)Victor Stinner2020-03-171-9/+16
| | | | | | | | | | | | | | | subinterpreters: Move _PyRuntimeState.ceval.tracing_possible to PyInterpreterState.ceval.tracing_possible: each interpreter now has its own variable. Changes: * Add _ceval_state structure. * Add PyInterpreterState.ceval field. * _PyEval_EvalFrameDefault(): add ceval2 variable (struct _ceval_state*). * Rename _PyEval_Initialize() to _PyEval_InitRuntimeState(). * Add _PyEval_InitState(). * Don't export internal _Py_FinishPendingCalls() and _PyEval_FiniThreads() functions anymore.
* bpo-35370: PyEval_SetTrace() logs unraisable error (GH-18977)Victor Stinner2020-03-161-2/+8
| | | | If PySys_Audit() fails in PyEval_SetProfile() or PyEval_SetTrace(), log the error as an unraisable exception.
* bpo-35370: Add _PyEval_SetTrace() function (GH-18975)Victor Stinner2020-03-131-20/+54
| | | | | | | | | * sys.settrace(), sys.setprofile() and _lsprof.Profiler.enable() now properly report PySys_Audit() error if "sys.setprofile" or "sys.settrace" audit event is denied. * Add _PyEval_SetProfile() and _PyEval_SetTrace() function: similar to PyEval_SetProfile() and PyEval_SetTrace() but take a tstate parameter and return -1 on error. * Add _PyObject_FastCallTstate() function.
* bpo-38500: Add _PyInterpreterState_SetEvalFrameFunc() (GH-17340)Victor Stinner2020-03-121-9/+6
| | | | | | | | | | | | PyInterpreterState.eval_frame function now requires a tstate (Python thread state) parameter. Add private functions to the C API to get and set the frame evaluation function: * Add tstate parameter to _PyFrameEvalFunction function type. * Add _PyInterpreterState_GetEvalFrameFunc() and _PyInterpreterState_SetEvalFrameFunc() functions. * Add tstate parameter to _PyEval_EvalFrameDefault().
* bpo-39877: Deprecate PyEval_InitThreads() (GH-18892)Victor Stinner2020-03-101-6/+1
| | | | Deprecated PyEval_InitThreads() and PyEval_ThreadsInitialized(). Calling PyEval_InitThreads() now does nothing.
* bpo-39877: PyGILState_Ensure() don't call PyEval_InitThreads() (GH-18891)Victor Stinner2020-03-091-1/+7
| | | | | | | | PyGILState_Ensure() doesn't call PyEval_InitThreads() anymore when a new Python thread state is created. The GIL is created by Py_Initialize() since Python 3.7, it's not needed to call PyEval_InitThreads() explicitly. Add an assertion to ensure that the GIL is already created.
* bpo-39877: Refactor take_gil() function (GH-18885)Victor Stinner2020-03-091-65/+13
| | | | | | | | | * Remove ceval parameter of take_gil(): get it from tstate. * Move exit_thread_if_finalizing() call inside take_gil(). Replace exit_thread_if_finalizing() with tstate_must_exit(): the caller is now responsible to call PyThread_exit_thread(). * Move is_tstate_valid() assertion inside take_gil(). Remove is_tstate_valid(): inline code into take_gil(). * Move gil_created() assertion inside take_gil().
* bpo-39877: Py_Initialize() pass tstate to PyEval_InitThreads() (GH-18884)Victor Stinner2020-03-091-8/+22
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* bpo-39877: Remove useless PyEval_InitThreads() calls (GH-18883)Victor Stinner2020-03-091-4/+2
| | | | Py_Initialize() calls PyEval_InitThreads() since Python 3.7. It's no longer needed to call it explicitly.
* bpo-39877: Fix PyEval_RestoreThread() for daemon threads (GH-18811)Victor Stinner2020-03-081-20/+60
| | | | | | | | | | | | | | | | | | | | * exit_thread_if_finalizing() does now access directly _PyRuntime variable, rather than using tstate->interp->runtime since tstate can be a dangling pointer after Py_Finalize() has been called. * exit_thread_if_finalizing() is now called *before* calling take_gil(). _PyRuntime.finalizing is an atomic variable, we don't need to hold the GIL to access it. * Add ensure_tstate_not_null() function to check that tstate is not NULL at runtime. Check tstate earlier. take_gil() does not longer check if tstate is NULL. Cleanup: * PyEval_RestoreThread() no longer saves/restores errno: it's already done inside take_gil(). * PyEval_AcquireLock(), PyEval_AcquireThread(), PyEval_RestoreThread() and _PyEval_EvalFrameDefault() now check if tstate is valid with the new is_tstate_valid() function which uses _PyMem_IsPtrFreed().
* bpo-39882: Py_FatalError() logs the function name (GH-18819)Victor Stinner2020-03-061-6/+6
| | | | | | | | | | | | The Py_FatalError() function is replaced with a macro which logs automatically the name of the current function, unless the Py_LIMITED_API macro is defined. Changes: * Add _Py_FatalErrorFunc() function. * Remove the function name from the message of Py_FatalError() calls which included the function name. * Update tests.
* bpo-39877: _PyRuntimeState.finalizing becomes atomic (GH-18816)Victor Stinner2020-03-061-1/+2
| | | | | | | | | | | | Convert _PyRuntimeState.finalizing field to an atomic variable: * Rename it to _finalizing * Change its type to _Py_atomic_address * Add _PyRuntimeState_GetFinalizing() and _PyRuntimeState_SetFinalizing() functions * Remove _Py_CURRENTLY_FINALIZING() function: replace it with testing directly _PyRuntimeState_GetFinalizing() value Convert _PyRuntimeState_GetThreadState() to static inline function.
* bpo-39573: Finish converting to new Py_IS_TYPE() macro (GH-18601)Andy Lester2020-03-041-2/+2
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* Reuse identifier of PREDICT macros as PREDICT_ID (GH-17155)Denis Chernikov2020-02-211-5/+7
| | | | In function `_PyEval_EvalFrameDefault`, macros PREDICT and PREDICTED use the same identifier creation scheme, which may be shared between them, reducing code repetition, and do ensure that the same identifier is generated.
* closes bpo-39605: Fix some casts to not cast away const. (GH-18453)Andy Lester2020-02-121-3/+3
| | | | | | | | | | | | | | | gcc -Wcast-qual turns up a number of instances of casting away constness of pointers. Some of these can be safely modified, by either: Adding the const to the type cast, as in: - return _PyUnicode_FromUCS1((unsigned char*)s, size); + return _PyUnicode_FromUCS1((const unsigned char*)s, size); or, Removing the cast entirely, because it's not necessary (but probably was at one time), as in: - PyDTrace_FUNCTION_ENTRY((char *)filename, (char *)funcname, lineno); + PyDTrace_FUNCTION_ENTRY(filename, funcname, lineno); These changes will not change code, but they will make it much easier to check for errors in consts
* bpo-39245: Switch to public API for Vectorcall (GH-18460)Petr Viktorin2020-02-111-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The bulk of this patch was generated automatically with: for name in \ PyObject_Vectorcall \ Py_TPFLAGS_HAVE_VECTORCALL \ PyObject_VectorcallMethod \ PyVectorcall_Function \ PyObject_CallOneArg \ PyObject_CallMethodNoArgs \ PyObject_CallMethodOneArg \ ; do echo $name git grep -lwz _$name | xargs -0 sed -i "s/\b_$name\b/$name/g" done old=_PyObject_FastCallDict new=PyObject_VectorcallDict git grep -lwz $old | xargs -0 sed -i "s/\b$old\b/$new/g" and then cleaned up: - Revert changes to in docs & news - Revert changes to backcompat defines in headers - Nudge misaligned comments
* bpo-39573: Use Py_SET_SIZE() function (GH-18402)Victor Stinner2020-02-071-1/+1
| | | | Replace direct acccess to PyVarObject.ob_size with usage of the Py_SET_SIZE() function.
* bpo-39573: Use Py_TYPE() macro in Python and Include directories (GH-18391)Victor Stinner2020-02-071-7/+7
| | | Replace direct access to PyObject.ob_type with Py_TYPE().
* bpo-39487: Merge duplicated _Py_IDENTIFIER identifiers in C code (GH-18254)Hai Shi2020-01-301-2/+1
| | | Moving repetitive `_Py_IDENTIFIER` instances to a global location helps identify them more easily in regards to sub-interpreter support.
* bpo-38631: Replace Py_FatalError() with assert() in ceval.c (GH-18279)Victor Stinner2020-01-301-10/+4
| | | | | | | Replace a few Py_FatalError() calls if tstate is NULL with assert(tstate != NULL) in ceval.c. PyEval_AcquireThread(), PyEval_ReleaseThread() and PyEval_RestoreThread() must never be called with a NULL tstate.
* bpo-38960: DTrace build fix for FreeBSD. (GH-17451)David Carlier2020-01-281-3/+3
| | | | | | | | DTrace build fix for FreeBSD. - allowing passing an extra flag as it need to define the arch size. - casting some probe's arguments.
* bpo-38644: Pass tstate in ceval.c (GH-18222)Victor Stinner2020-01-281-6/+6
| | | Pass explicitly the Python thread state (tstate) in ceval.c.
* bpo-39320: Handle unpacking of **values in compiler (GH-18141)Mark Shannon2020-01-271-36/+19
| | | | | | | | | | | | | * Add DICT_UPDATE and DICT_MERGE bytecodes. Use them for ** unpacking. * Remove BUILD_MAP_UNPACK and BUILD_MAP_UNPACK_WITH_CALL, as they are now unused. * Update magic number for ** unpacking opcodes. * Update dis.rst to incorporate new bytecodes. * Add blurb entry.
* bpo-39320: Handle unpacking of *values in compiler (GH-17984)Mark Shannon2020-01-231-53/+34
| | | | | | | | * Add three new bytecodes: LIST_TO_TUPLE, LIST_EXTEND, SET_UPDATE. Use them to implement star unpacking expressions. * Remove four bytecodes BUILD_LIST_UNPACK, BUILD_TUPLE_UNPACK, BUILD_SET_UNPACK and BUILD_TUPLE_UNPACK_WITH_CALL opcodes as they are now unused. * Update magic number and dis.rst for new bytecodes.
* bpo-39048: Look up __aenter__ before __aexit__ in async with (GH-17609)Géry Ogam2020-01-141-9/+10
| | | | | | * Reorder the __aenter__ and __aexit__ checks for async with * Add assertions for async with body being skipped * Swap __aexit__ and __aenter__ loading in the documentation
* bpo-39156: Break up COMPARE_OP into four logically distinct opcodes. (GH-17754)Mark Shannon2020-01-141-59/+78
| | | | | | | | Break up COMPARE_OP into four logically distinct opcodes: * COMPARE_OP for rich comparisons * IS_OP for 'is' and 'is not' tests * CONTAINS_OP for 'in' and 'is not' tests * JUMP_IF_NOT_EXC_MATCH for checking exceptions in 'try-except' statements.
* bpo-38644: Pass tstate to _Py_FinishPendingCalls() (GH-17990)Victor Stinner2020-01-131-2/+2
| | | | _Py_FinishPendingCalls() now expects a tstate argument, instead of a runtime argument.
* Cleanup exit code for interpreter. (GH-17756)Mark Shannon2020-01-131-6/+5
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* bpo-39166: Fix trace of last iteration of async for loops (#17800)Pablo Galindo2020-01-101-5/+9
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* bpo-39114: Fix tracing of except handlers with name binding (GH-17769)Pablo Galindo2020-01-021-1/+3
| | | When producing the bytecode of exception handlers with name binding (like `except Exception as e`) we need to produce a try-finally block to make sure that the name is deleted after the handler is executed to prevent cycles in the stack frame objects. The bytecode associated with this try-finally block does not have source lines associated and it was causing problems when the tracing functionality was running over it.
* Produce cleaner bytecode for 'with' and 'async with' by generating separate ↵Mark Shannon2019-11-211-192/+30
| | | | | | code for normal and exceptional paths. (#6641) Remove BEGIN_FINALLY, END_FINALLY, CALL_FINALLY and POP_FINALLY bytecodes. Implement finally blocks by code duplication. Reimplement frame.lineno setter using line numbers rather than bytecode offsets.
* bpo-36710: Add PyInterpreterState.runtime field (GH-17270)Victor Stinner2019-11-201-12/+16
| | | | | | | | | | | Add PyInterpreterState.runtime field: reference to the _PyRuntime global variable. This field exists to not have to pass runtime in addition to tstate to a function. Get runtime from tstate: tstate->interp->runtime. Remove "_PyRuntimeState *runtime" parameter from functions already taking a "PyThreadState *tstate" parameter. _PyGC_Init() first parameter becomes "PyThreadState *tstate".
* bpo-38644: Add _PyEval_EvalCode() (GH-17183)Victor Stinner2019-11-161-4/+24
| | | _PyFunction_Vectorcall() now pass tstate to function calls.
* bpo-38644: Add _PyObject_Call() (GH-17089)Victor Stinner2019-11-141-5/+6
| | | | | | | | | | * Add pycore_call.h internal header file. * Add _PyObject_Call(): PyObject_Call() with tstate * Add _PyObject_CallNoArgTstate(): _PyObject_CallNoArg() with tstate * Add _PyObject_FastCallDictTstate(): _PyObject_FastCallDict() with tstate * _PyObject_Call_Prepend() now takes tstate * Replace _PyObject_FastCall() calls with _PyObject_VectorcallTstate() calls
* bpo-38644: Add _PyEval_EvalFrame() with tstate (GH-17131)Victor Stinner2019-11-141-5/+7
| | | | Add _PyEval_EvalFrame() static inline function to get eval_frame from tstate->interp.
* bpo-37645: add new function _PyObject_FunctionStr() (GH-14890)Jeroen Demeyer2019-11-051-19/+30
| | | | | | | | | | | | Additional note: the `method_check_args` function in `Objects/descrobject.c` is written in such a way that it applies to all kinds of descriptors. In particular, a future re-implementation of `wrapper_descriptor` could use that code. CC @vstinner @encukou https://bugs.python.org/issue37645 Automerge-Triggered-By: @encukou
* bpo-38644: Pass tstate to _Py_CheckFunctionResult() (GH-17050)Victor Stinner2019-11-051-1/+1
| | | | | * Add tstate parameter to _Py_CheckFunctionResult() * Add _PyErr_FormatFromCauseTstate() * Replace PyErr_XXX(...) with _PyErr_XXX(state, ...)
* bpo-38644: Pass tstate to Py_EnterRecursiveCall() (GH-16997)Victor Stinner2019-11-041-7/+7
| | | | | | | | | | | | | * Add _Py_EnterRecursiveCall() and _Py_LeaveRecursiveCall() which require a tstate argument. * Pass tstate to _Py_MakeRecCheck() and _Py_CheckRecursiveCall(). * Convert Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() macros to static inline functions. _PyThreadState_GET() is the most efficient way to get the tstate, and so using it with _Py_EnterRecursiveCall() and _Py_LeaveRecursiveCall() should be a little bit more efficient than using Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() which use the "slower" PyThreadState_GET().
* bpo-38644: Add Py_EnterRecursiveCall() to the limited API (GH-17046)Victor Stinner2019-11-041-0/+18
| | | | | | | | | | Provide Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() as regular functions for the limited API. Previously, there were defined as macros, but these macros didn't work with the limited API which cannot access PyThreadState.recursion_depth field. Remove _Py_CheckRecursionLimit from the stable ABI. Add Include/cpython/ceval.h header file.
* bpo-38310: Predict BUILD_MAP_UNPACK_WITH_CALL -> CALL_FUNCTION_EX. (GH-16467)Brandt Bucher2019-09-291-0/+2
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