cpython/Include/genobject.h
Mark Shannon ae0a2b7562
bpo-44590: Lazily allocate frame objects (GH-27077)
* Convert "specials" array to InterpreterFrame struct, adding f_lasti, f_state and other non-debug FrameObject fields to it.

* Refactor, calls pushing the call to the interpreter upward toward _PyEval_Vector.

* Compute f_back when on thread stack, only filling in value when frame object outlives stack invocation.

* Move ownership of InterpreterFrame in generator from frame object to generator object.

* Do not create frame objects for Python calls.

* Do not create frame objects for generators.
2021-07-26 11:22:16 +01:00

101 lines
3.3 KiB
C

/* Generator object interface */
#ifndef Py_LIMITED_API
#ifndef Py_GENOBJECT_H
#define Py_GENOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
#include "pystate.h" /* _PyErr_StackItem */
#include "abstract.h" /* PySendResult */
/* _PyGenObject_HEAD defines the initial segment of generator
and coroutine objects. */
#define _PyGenObject_HEAD(prefix) \
PyObject_HEAD \
/* Note: gi_frame can be NULL if the generator is "finished" */ \
struct _interpreter_frame *prefix##_xframe; \
/* The code object backing the generator */ \
PyCodeObject *prefix##_code; \
/* List of weak reference. */ \
PyObject *prefix##_weakreflist; \
/* Name of the generator. */ \
PyObject *prefix##_name; \
/* Qualified name of the generator. */ \
PyObject *prefix##_qualname; \
_PyErr_StackItem prefix##_exc_state;
typedef struct {
/* The gi_ prefix is intended to remind of generator-iterator. */
_PyGenObject_HEAD(gi)
} PyGenObject;
PyAPI_DATA(PyTypeObject) PyGen_Type;
#define PyGen_Check(op) PyObject_TypeCheck(op, &PyGen_Type)
#define PyGen_CheckExact(op) Py_IS_TYPE(op, &PyGen_Type)
PyAPI_FUNC(PyObject *) PyGen_New(PyFrameObject *);
PyAPI_FUNC(PyObject *) PyGen_NewWithQualName(PyFrameObject *,
PyObject *name, PyObject *qualname);
PyAPI_FUNC(int) _PyGen_SetStopIterationValue(PyObject *);
PyAPI_FUNC(int) _PyGen_FetchStopIterationValue(PyObject **);
PyObject *_PyGen_yf(PyGenObject *);
PyAPI_FUNC(void) _PyGen_Finalize(PyObject *self);
#ifndef Py_LIMITED_API
typedef struct {
_PyGenObject_HEAD(cr)
PyObject *cr_origin;
} PyCoroObject;
PyAPI_DATA(PyTypeObject) PyCoro_Type;
PyAPI_DATA(PyTypeObject) _PyCoroWrapper_Type;
#define PyCoro_CheckExact(op) Py_IS_TYPE(op, &PyCoro_Type)
PyObject *_PyCoro_GetAwaitableIter(PyObject *o);
PyAPI_FUNC(PyObject *) PyCoro_New(PyFrameObject *,
PyObject *name, PyObject *qualname);
/* Asynchronous Generators */
typedef struct {
_PyGenObject_HEAD(ag)
PyObject *ag_finalizer;
/* Flag is set to 1 when hooks set up by sys.set_asyncgen_hooks
were called on the generator, to avoid calling them more
than once. */
int ag_hooks_inited;
/* Flag is set to 1 when aclose() is called for the first time, or
when a StopAsyncIteration exception is raised. */
int ag_closed;
int ag_running_async;
} PyAsyncGenObject;
PyAPI_DATA(PyTypeObject) PyAsyncGen_Type;
PyAPI_DATA(PyTypeObject) _PyAsyncGenASend_Type;
PyAPI_DATA(PyTypeObject) _PyAsyncGenWrappedValue_Type;
PyAPI_DATA(PyTypeObject) _PyAsyncGenAThrow_Type;
PyAPI_FUNC(PyObject *) PyAsyncGen_New(PyFrameObject *,
PyObject *name, PyObject *qualname);
#define PyAsyncGen_CheckExact(op) Py_IS_TYPE(op, &PyAsyncGen_Type)
PyObject *_PyAsyncGenValueWrapperNew(PyObject *);
#endif
#undef _PyGenObject_HEAD
#ifdef __cplusplus
}
#endif
#endif /* !Py_GENOBJECT_H */
#endif /* Py_LIMITED_API */