cpython/Python/executor.c at 665a4391e10167dad1c854fb604c86f336fcd331 · python/cpython · GitHub

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#include "Python.h"

#include "pycore_call.h"

#include "pycore_ceval.h"

#include "pycore_dict.h"

#include "pycore_emscripten_signal.h"

#include "pycore_intrinsics.h"

#include "pycore_long.h"

#include "pycore_object.h"

#include "pycore_opcode_metadata.h"

#include "pycore_opcode_utils.h"

#include "pycore_pyerrors.h"

#include "pycore_range.h"

#include "pycore_setobject.h" // _PySet_Update()

#include "pycore_sliceobject.h"

#include "pycore_uops.h"

#include "ceval_macros.h"

#undef ASSERT_KWNAMES_IS_NULL

#define ASSERT_KWNAMES_IS_NULL() (void)0

#undef DEOPT_IF

#define DEOPT_IF(COND, INSTNAME) \

if ((COND)) { \

goto deoptimize; \

}

#undef ENABLE_SPECIALIZATION

#define ENABLE_SPECIALIZATION 0

_PyInterpreterFrame *

_PyUopExecute(_PyExecutorObject *executor, _PyInterpreterFrame *frame, PyObject **stack_pointer)

{

#ifdef Py_DEBUG

char *uop_debug = Py_GETENV("PYTHONUOPSDEBUG");

int lltrace = 0;

if (uop_debug != NULL && *uop_debug >= '0') {

lltrace = *uop_debug - '0'; // TODO: Parse an int and all that

}

#define DPRINTF(level, ...) \

if (lltrace >= (level)) { printf(__VA_ARGS__); }

#else

#define DPRINTF(level, ...)

#endif

DPRINTF(3,

"Entering _PyUopExecute for %s (%s:%d) at byte offset %ld\n",

PyUnicode_AsUTF8(_PyFrame_GetCode(frame)->co_qualname),

PyUnicode_AsUTF8(_PyFrame_GetCode(frame)->co_filename),

_PyFrame_GetCode(frame)->co_firstlineno,

2 * (long)(frame->prev_instr + 1 -

(_Py_CODEUNIT *)_PyFrame_GetCode(frame)->co_code_adaptive));

PyThreadState *tstate = _PyThreadState_GET();

_PyUOpExecutorObject *self = (_PyUOpExecutorObject *)executor;

CHECK_EVAL_BREAKER();

OBJECT_STAT_INC(optimization_traces_executed);

_Py_CODEUNIT *ip_offset = (_Py_CODEUNIT *)_PyFrame_GetCode(frame)->co_code_adaptive;

int pc = 0;

int opcode;

int oparg;

uint64_t operand;

for (;;) {

opcode = self->trace[pc].opcode;

oparg = self->trace[pc].oparg;

operand = self->trace[pc].operand;

DPRINTF(3,

"%4d: uop %s, oparg %d, operand %" PRIu64 ", stack_level %d\n",

pc,

opcode < 256 ? _PyOpcode_OpName[opcode] : _PyOpcode_uop_name[opcode],

oparg,

operand,

(int)(stack_pointer - _PyFrame_Stackbase(frame)));

pc++;

OBJECT_STAT_INC(optimization_uops_executed);

switch (opcode) {

#include "executor_cases.c.h"

default:

{

fprintf(stderr, "Unknown uop %d, operand %" PRIu64 "\n", opcode, operand);

Py_FatalError("Unknown uop");

}

unbound_local_error:

_PyEval_FormatExcCheckArg(tstate, PyExc_UnboundLocalError,

UNBOUNDLOCAL_ERROR_MSG,

PyTuple_GetItem(_PyFrame_GetCode(frame)->co_localsplusnames, oparg)

);

goto error;

pop_4_error:

STACK_SHRINK(1);

pop_3_error:

STACK_SHRINK(1);

pop_2_error:

STACK_SHRINK(1);

pop_1_error:

STACK_SHRINK(1);

error:

// On ERROR_IF we return NULL as the frame.

// The caller recovers the frame from cframe.current_frame.

DPRINTF(2, "Error: [Opcode %d, operand %" PRIu64 "]\n", opcode, operand);

_PyFrame_SetStackPointer(frame, stack_pointer);

Py_DECREF(self);

return NULL;

deoptimize:

// On DEOPT_IF we just repeat the last instruction.

// This presumes nothing was popped from the stack (nor pushed).

DPRINTF(2, "DEOPT: [Opcode %d, operand %" PRIu64 "]\n", opcode, operand);

frame->prev_instr--; // Back up to just before destination

_PyFrame_SetStackPointer(frame, stack_pointer);

Py_DECREF(self);

return frame;

}

cpython/Python/executor.c at 665a4391e10167dad1c854fb604c86f336fcd331 · python/cpython · GitHub

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