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155 lines (116 loc) · 5.46 KB
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/* Thread and interpreter state structures and their interfaces */
#ifndef Py_PYSTATE_H
#define Py_PYSTATE_H
#ifdef __cplusplus
extern "C" {
#endif
/* This limitation is for performance and simplicity. If needed it can be
removed (with effort). */
#define MAX_CO_EXTRA_USERS 255
PyAPI_FUNC(PyInterpreterState *) PyInterpreterState_New(void);
PyAPI_FUNC(void) PyInterpreterState_Clear(PyInterpreterState *);
PyAPI_FUNC(void) PyInterpreterState_Delete(PyInterpreterState *);
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03090000
/* New in 3.9 */
/* Get the current interpreter state.
Issue a fatal error if there no current Python thread state or no current
interpreter. It cannot return NULL.
The caller must hold the GIL. */
PyAPI_FUNC(PyInterpreterState *) PyInterpreterState_Get(void);
#endif
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03080000
/* New in 3.8 */
PyAPI_FUNC(PyObject *) PyInterpreterState_GetDict(PyInterpreterState *);
#endif
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03070000
/* New in 3.7 */
PyAPI_FUNC(int64_t) PyInterpreterState_GetID(PyInterpreterState *);
#endif
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03030000
/* State unique per thread */
/* New in 3.3 */
PyAPI_FUNC(int) PyState_AddModule(PyObject*, PyModuleDef*);
PyAPI_FUNC(int) PyState_RemoveModule(PyModuleDef*);
#endif
PyAPI_FUNC(PyObject*) PyState_FindModule(PyModuleDef*);
PyAPI_FUNC(PyThreadState *) PyThreadState_New(PyInterpreterState *);
PyAPI_FUNC(void) PyThreadState_Clear(PyThreadState *);
PyAPI_FUNC(void) PyThreadState_Delete(PyThreadState *);
/* Get the current thread state.
When the current thread state is NULL, this issues a fatal error (so that
the caller needn't check for NULL).
The caller must hold the GIL.
See also PyThreadState_GetUnchecked() and _PyThreadState_GET(). */
PyAPI_FUNC(PyThreadState *) PyThreadState_Get(void);
// Alias to PyThreadState_Get()
#define PyThreadState_GET() PyThreadState_Get()
PyAPI_FUNC(PyThreadState *) PyThreadState_Swap(PyThreadState *);
PyAPI_FUNC(PyObject *) PyThreadState_GetDict(void);
PyAPI_FUNC(int) PyThreadState_SetAsyncExc(unsigned long, PyObject *);
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03090000
/* New in 3.9 */
PyAPI_FUNC(PyInterpreterState*) PyThreadState_GetInterpreter(PyThreadState *tstate);
PyAPI_FUNC(PyFrameObject*) PyThreadState_GetFrame(PyThreadState *tstate);
PyAPI_FUNC(uint64_t) PyThreadState_GetID(PyThreadState *tstate);
#endif
typedef
enum {PyGILState_LOCKED, PyGILState_UNLOCKED}
PyGILState_STATE;
/* Ensure that the current thread is ready to call the Python
C API, regardless of the current state of Python, or of its
thread lock. This may be called as many times as desired
by a thread so long as each call is matched with a call to
PyGILState_Release(). In general, other thread-state APIs may
be used between _Ensure() and _Release() calls, so long as the
thread-state is restored to its previous state before the Release().
For example, normal use of the Py_BEGIN_ALLOW_THREADS/
Py_END_ALLOW_THREADS macros are acceptable.
The return value is an opaque "handle" to the thread state when
PyGILState_Ensure() was called, and must be passed to
PyGILState_Release() to ensure Python is left in the same state. Even
though recursive calls are allowed, these handles can *not* be shared -
each unique call to PyGILState_Ensure must save the handle for its
call to PyGILState_Release.
When the function returns, the current thread will hold the GIL.
Failure is a fatal error.
*/
PyAPI_FUNC(PyGILState_STATE) PyGILState_Ensure(void);
/* Release any resources previously acquired. After this call, Python's
state will be the same as it was prior to the corresponding
PyGILState_Ensure() call (but generally this state will be unknown to
the caller, hence the use of the GILState API.)
Every call to PyGILState_Ensure must be matched by a call to
PyGILState_Release on the same thread.
*/
PyAPI_FUNC(void) PyGILState_Release(PyGILState_STATE);
/* Helper/diagnostic function - get the current thread state for
this thread. May return NULL if no GILState API has been used
on the current thread. Note that the main thread always has such a
thread-state, even if no auto-thread-state call has been made
on the main thread.
*/
PyAPI_FUNC(PyThreadState *) PyGILState_GetThisThreadState(void);
/* PEP 788 -- Protection against interpreter finalization */
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= _Py_PACK_VERSION(3, 15)
typedef struct PyInterpreterGuard PyInterpreterGuard;
typedef struct PyInterpreterView PyInterpreterView;
typedef void PyThreadStateToken;
PyAPI_FUNC(PyInterpreterGuard *) PyInterpreterGuard_FromCurrent(void);
PyAPI_FUNC(void) PyInterpreterGuard_Close(PyInterpreterGuard *guard);
PyAPI_FUNC(PyInterpreterGuard *) PyInterpreterGuard_FromView(PyInterpreterView *view);
PyAPI_FUNC(PyInterpreterView *) PyInterpreterView_FromCurrent(void);
PyAPI_FUNC(void) PyInterpreterView_Close(PyInterpreterView *view);
PyAPI_FUNC(PyInterpreterView *) PyInterpreterView_FromMain(void);
PyAPI_FUNC(PyThreadStateToken *) PyThreadState_Ensure(PyInterpreterGuard *guard);
PyAPI_FUNC(PyThreadStateToken *) PyThreadState_EnsureFromView(PyInterpreterView *view);
PyAPI_FUNC(void) PyThreadState_Release(PyThreadStateToken *tstate);
#endif
#ifndef Py_LIMITED_API
# define Py_CPYTHON_PYSTATE_H
# include "cpython/pystate.h"
# undef Py_CPYTHON_PYSTATE_H
#endif
#ifdef __cplusplus
}
#endif
#endif /* !Py_PYSTATE_H */