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Filename : pylifecycle.h
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#ifndef Py_CPYTHON_PYLIFECYCLE_H
#  error "this header file must not be included directly"
#endif

/* Py_FrozenMain is kept out of the Limited API until documented and present
   in all builds of Python */
PyAPI_FUNC(int) Py_FrozenMain(int argc, char **argv);

/* Only used by applications that embed the interpreter and need to
 * override the standard encoding determination mechanism
 */
Py_DEPRECATED(3.11) PyAPI_FUNC(int) Py_SetStandardStreamEncoding(
    const char *encoding,
    const char *errors);

/* PEP 432 Multi-phase initialization API (Private while provisional!) */

PyAPI_FUNC(PyStatus) Py_PreInitialize(
    const PyPreConfig *src_config);
PyAPI_FUNC(PyStatus) Py_PreInitializeFromBytesArgs(
    const PyPreConfig *src_config,
    Py_ssize_t argc,
    char **argv);
PyAPI_FUNC(PyStatus) Py_PreInitializeFromArgs(
    const PyPreConfig *src_config,
    Py_ssize_t argc,
    wchar_t **argv);

PyAPI_FUNC(int) _Py_IsCoreInitialized(void);


/* Initialization and finalization */

PyAPI_FUNC(PyStatus) Py_InitializeFromConfig(
    const PyConfig *config);
PyAPI_FUNC(PyStatus) _Py_InitializeMain(void);

PyAPI_FUNC(int) Py_RunMain(void);


PyAPI_FUNC(void) _Py_NO_RETURN Py_ExitStatusException(PyStatus err);

/* Restore signals that the interpreter has called SIG_IGN on to SIG_DFL. */
PyAPI_FUNC(void) _Py_RestoreSignals(void);

PyAPI_FUNC(int) Py_FdIsInteractive(FILE *, const char *);
PyAPI_FUNC(int) _Py_FdIsInteractive(FILE *fp, PyObject *filename);

Py_DEPRECATED(3.11) PyAPI_FUNC(void) _Py_SetProgramFullPath(const wchar_t *);

PyAPI_FUNC(const char *) _Py_gitidentifier(void);
PyAPI_FUNC(const char *) _Py_gitversion(void);

PyAPI_FUNC(int) _Py_IsFinalizing(void);
PyAPI_FUNC(int) _Py_IsInterpreterFinalizing(PyInterpreterState *interp);

/* Random */
PyAPI_FUNC(int) _PyOS_URandom(void *buffer, Py_ssize_t size);
PyAPI_FUNC(int) _PyOS_URandomNonblock(void *buffer, Py_ssize_t size);

/* Legacy locale support */
PyAPI_FUNC(int) _Py_CoerceLegacyLocale(int warn);
PyAPI_FUNC(int) _Py_LegacyLocaleDetected(int warn);
PyAPI_FUNC(char *) _Py_SetLocaleFromEnv(int category);

/* --- PyInterpreterConfig ------------------------------------ */

#define PyInterpreterConfig_DEFAULT_GIL (0)
#define PyInterpreterConfig_SHARED_GIL (1)
#define PyInterpreterConfig_OWN_GIL (2)

typedef struct {
    // XXX "allow_object_sharing"?  "own_objects"?
    int use_main_obmalloc;
    int allow_fork;
    int allow_exec;
    int allow_threads;
    int allow_daemon_threads;
    int check_multi_interp_extensions;
    int gil;
} PyInterpreterConfig;

#define _PyInterpreterConfig_INIT \
    { \
        .use_main_obmalloc = 0, \
        .allow_fork = 0, \
        .allow_exec = 0, \
        .allow_threads = 1, \
        .allow_daemon_threads = 0, \
        .check_multi_interp_extensions = 1, \
        .gil = PyInterpreterConfig_OWN_GIL, \
    }

#define _PyInterpreterConfig_LEGACY_INIT \
    { \
        .use_main_obmalloc = 1, \
        .allow_fork = 1, \
        .allow_exec = 1, \
        .allow_threads = 1, \
        .allow_daemon_threads = 1, \
        .check_multi_interp_extensions = 0, \
        .gil = PyInterpreterConfig_SHARED_GIL, \
    }

PyAPI_FUNC(PyStatus) Py_NewInterpreterFromConfig(
    PyThreadState **tstate_p,
    const PyInterpreterConfig *config);

typedef void (*atexit_datacallbackfunc)(void *);
PyAPI_FUNC(int) _Py_AtExit(
        PyInterpreterState *, atexit_datacallbackfunc, void *);